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Diffstat (limited to 'src/widgets/qiconview.cpp')
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diff --git a/src/widgets/qiconview.cpp b/src/widgets/qiconview.cpp new file mode 100644 index 0000000..a05ec34 --- /dev/null +++ b/src/widgets/qiconview.cpp @@ -0,0 +1,6640 @@ +/**************************************************************************** +** +** Implementation of QIconView widget class +** +** Created : 990707 +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of the iconview module of the Qt GUI Toolkit. +** +** This file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free +** Software Foundation and appearing in the files LICENSE.GPL2 +** and LICENSE.GPL3 included in the packaging of this file. +** Alternatively you may (at your option) use any later version +** of the GNU General Public License if such license has been +** publicly approved by Trolltech ASA (or its successors, if any) +** and the KDE Free Qt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing requirements will be met: +** http://trolltech.com/products/qt/licenses/licensing/opensource/. +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://trolltech.com/products/qt/licenses/licensing/licensingoverview +** or contact the sales department at [email protected]. +** +** This file may be used under the terms of the Q Public License as +** defined by Trolltech ASA and appearing in the file LICENSE.QPL +** included in the packaging of this file. Licensees holding valid Qt +** Commercial licenses may use this file in accordance with the Qt +** Commercial License Agreement provided with the Software. +** +** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, +** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted +** herein. +** +**********************************************************************/ + +#include "qglobal.h" +#if defined(Q_CC_BOR) +// needed for qsort() because of a std namespace problem on Borland +#include "qplatformdefs.h" +#endif + +#include "qiconview.h" + +#ifndef QT_NO_ICONVIEW + +#include "qfontmetrics.h" +#include "qpainter.h" +#include "qevent.h" +#include "qpalette.h" +#include "qmime.h" +#include "qimage.h" +#include "qpen.h" +#include "qbrush.h" +#include "qtimer.h" +#include "qcursor.h" +#include "qapplication.h" +#include "qtextedit.h" +#include "qmemarray.h" +#include "qptrlist.h" +#include "qvbox.h" +#include "qtooltip.h" +#include "qbitmap.h" +#include "qpixmapcache.h" +#include "qptrdict.h" +#include "qstringlist.h" +#include "qcleanuphandler.h" +#include "private/qrichtext_p.h" +#include "qstyle.h" + +#include <limits.h> +#include <stdlib.h> + +#define RECT_EXTENSION 300 + +static const char * const unknown_xpm[] = { + "32 32 11 1", + "c c #ffffff", + "g c #c0c0c0", + "a c #c0ffc0", + "h c #a0a0a4", + "d c #585858", + "f c #303030", + "i c #400000", + "b c #00c000", + "e c #000000", + "# c #000000", + ". c None", + "...###..........................", + "...#aa##........................", + ".###baaa##......................", + ".#cde#baaa##....................", + ".#cccdeebaaa##..##f.............", + ".#cccccdeebaaa##aaa##...........", + ".#cccccccdeebaaaaaaaa##.........", + ".#cccccccccdeebaaaaaaa#.........", + ".#cccccgcgghhebbbbaaaaa#........", + ".#ccccccgcgggdebbbbbbaa#........", + ".#cccgcgcgcgghdeebiebbba#.......", + ".#ccccgcggggggghdeddeeba#.......", + ".#cgcgcgcggggggggghghdebb#......", + ".#ccgcggggggggghghghghd#b#......", + ".#cgcgcggggggggghghghhd#b#......", + ".#gcggggggggghghghhhhhd#b#......", + ".#cgcggggggggghghghhhhd#b#......", + ".#ggggggggghghghhhhhhhdib#......", + ".#gggggggggghghghhhhhhd#b#......", + ".#hhggggghghghhhhhhhhhd#b#......", + ".#ddhhgggghghghhhhhhhhd#b#......", + "..##ddhhghghhhhhhhhhhhdeb#......", + "....##ddhhhghhhhhhhhhhd#b#......", + "......##ddhhhhhhhhhhhhd#b#......", + "........##ddhhhhhhhhhhd#b#......", + "..........##ddhhhhhhhhd#b#......", + "............##ddhhhhhhd#b###....", + "..............##ddhhhhd#b#####..", + "................##ddhhd#b######.", + "..................##dddeb#####..", + "....................##d#b###....", + "......................####......"}; + +static QPixmap *unknown_icon = 0; +static QPixmap *qiv_buffer_pixmap = 0; +#if !defined(Q_WS_X11) +static QPixmap *qiv_selection = 0; +#endif +static bool optimize_layout = FALSE; + +static QCleanupHandler<QPixmap> qiv_cleanup_pixmap; + +#if !defined(Q_WS_X11) +static void createSelectionPixmap( const QColorGroup &cg ) +{ + QBitmap m( 2, 2 ); + m.fill( Qt::color1 ); + QPainter p( &m ); + p.setPen( Qt::color0 ); + for ( int j = 0; j < 2; ++j ) { + p.drawPoint( j % 2, j ); + } + p.end(); + + qiv_selection = new QPixmap( 2, 2 ); + qiv_cleanup_pixmap.add( &qiv_selection ); + qiv_selection->fill( Qt::color0 ); + qiv_selection->setMask( m ); + qiv_selection->fill( cg.highlight() ); +} +#endif + +static QPixmap *get_qiv_buffer_pixmap( const QSize &s ) +{ + if ( !qiv_buffer_pixmap ) { + qiv_buffer_pixmap = new QPixmap( s ); + qiv_cleanup_pixmap.add( &qiv_buffer_pixmap ); + return qiv_buffer_pixmap; + } + + qiv_buffer_pixmap->resize( s ); + return qiv_buffer_pixmap; +} + +#ifndef QT_NO_DRAGANDDROP + +class Q_EXPORT QIconDragData +{ +public: + QIconDragData(); + QIconDragData( const QRect &ir, const QRect &tr ); + + QRect pixmapRect() const; + QRect textRect() const; + + void setPixmapRect( const QRect &r ); + void setTextRect( const QRect &r ); + + QRect iconRect_, textRect_; + QString key_; + + bool operator==( const QIconDragData &i ) const; +}; + +class Q_EXPORT QIconDragDataItem +{ +public: + QIconDragDataItem() {} + QIconDragDataItem( const QIconDragItem &i1, const QIconDragData &i2 ) : data( i1 ), item( i2 ) {} + QIconDragItem data; + QIconDragData item; + bool operator== ( const QIconDragDataItem& ) const; +}; + +class QIconDragPrivate +{ +public: + QValueList<QIconDragDataItem> items; + static bool decode( QMimeSource* e, QValueList<QIconDragDataItem> &lst ); +}; + +#endif + +class QIconViewToolTip; + +class QIconViewPrivate +{ +public: + QIconViewItem *firstItem, *lastItem; + uint count; + QIconView::SelectionMode selectionMode; + QIconViewItem *currentItem, *tmpCurrentItem, *highlightedItem, + *startDragItem, *pressedItem, *selectAnchor, *renamingItem; + QRect *rubber; + QPixmap *backBuffer; + QTimer *scrollTimer, *adjustTimer, *updateTimer, *inputTimer, + *fullRedrawTimer; + int rastX, rastY, spacing; + int dragItems; + QPoint oldDragPos; + QIconView::Arrangement arrangement; + QIconView::ResizeMode resizeMode; + QSize oldSize; +#ifndef QT_NO_DRAGANDDROP + QValueList<QIconDragDataItem> iconDragData; +#endif + int numDragItems, cachedW, cachedH; + int maxItemWidth, maxItemTextLength; + QPoint dragStart; + QString currInputString; + QIconView::ItemTextPos itemTextPos; +#ifndef QT_NO_CURSOR + QCursor oldCursor; +#endif + int cachedContentsX, cachedContentsY; + QBrush itemTextBrush; + QRegion clipRegion; + QPoint dragStartPos; + QFontMetrics *fm; + int minLeftBearing, minRightBearing; + int rubberStartX, rubberStartY; + + uint mousePressed :1; + uint cleared :1; + uint dropped :1; + uint clearing :1; + uint oldDragAcceptAction :1; + uint isIconDrag :1; + uint drawDragShapes :1; + uint dirty :1; + uint rearrangeEnabled :1; + uint reorderItemsWhenInsert :1; + uint drawAllBack :1; + uint resortItemsWhenInsert :1; + uint sortDirection :1; + uint wordWrapIconText :1; + uint containerUpdateLocked :1; + uint firstSizeHint : 1; + uint showTips :1; + uint pressedSelected :1; + uint canStartRubber :1; + uint dragging :1; + uint drawActiveSelection :1; + uint inMenuMode :1; + + QIconViewToolTip *toolTip; + QPixmapCache maskCache; + QPixmap *backrubber; + QPtrDict<QIconViewItem> selectedItems; + + struct ItemContainer { + ItemContainer( ItemContainer *pr, ItemContainer *nx, const QRect &r ) + : p( pr ), n( nx ), rect( r ) { + items.setAutoDelete( FALSE ); + if ( p ) + p->n = this; + if ( n ) + n->p = this; + } + ItemContainer *p, *n; + QRect rect; + QPtrList<QIconViewItem> items; + } *firstContainer, *lastContainer; + + struct SortableItem { + QIconViewItem *item; + }; + +public: + + /* finds the containers that intersect with \a searchRect in the direction \a dir relative to \a relativeTo */ + QPtrList<ItemContainer>* findContainers( + QIconView:: Direction dir, + const QPoint &relativeTo, + const QRect &searchRect ) const; + // friend int cmpIconViewItems( const void *n1, const void *n2 ); +}; + + +QPtrList<QIconViewPrivate::ItemContainer>* QIconViewPrivate::findContainers( + QIconView:: Direction dir, + const QPoint &relativeTo, + const QRect &searchRect ) const +{ + + QPtrList<QIconViewPrivate::ItemContainer>* list = + new QPtrList<QIconViewPrivate::ItemContainer>(); + + if ( arrangement == QIconView::LeftToRight ) { + if ( dir == QIconView::DirLeft || dir == QIconView::DirRight ) { + ItemContainer *c = firstContainer; + for ( ; c; c = c->n ) + if ( c->rect.intersects( searchRect ) ) + list->append( c ); + } else { + if ( dir == QIconView::DirDown ) { + ItemContainer *c = firstContainer; + for ( ; c; c = c->n ) + if ( c->rect.intersects( searchRect ) && + c->rect.bottom() >= relativeTo.y() ) + list->append( c ); + } else { + ItemContainer *c = lastContainer; + for ( ; c; c = c->p ) + if ( c->rect.intersects( searchRect ) && + c->rect.top() <= relativeTo.y() ) + list->append( c ); + } + } + } else { + if ( dir == QIconView::DirUp || dir == QIconView::DirDown ) { + ItemContainer *c = firstContainer; + for ( ; c; c = c->n ) + if ( c->rect.intersects( searchRect ) ) + list->append( c ); + } else { + if ( dir == QIconView::DirRight ) { + ItemContainer *c = firstContainer; + for ( ; c; c = c->n ) + if ( c->rect.intersects( searchRect ) && + c->rect.right() >= relativeTo.x() ) + list->append( c ); + } else { + ItemContainer *c = lastContainer; + for ( ; c; c = c->p ) + if ( c->rect.intersects( searchRect ) && + c->rect.left() <= relativeTo.x() ) + list->append( c ); + } + } + } + return list; +} + + +#if defined(Q_C_CALLBACKS) +extern "C" { +#endif + +#ifdef Q_OS_TEMP +static int _cdecl cmpIconViewItems( const void *n1, const void *n2 ) +#else +static int cmpIconViewItems( const void *n1, const void *n2 ) +#endif +{ + if ( !n1 || !n2 ) + return 0; + + QIconViewPrivate::SortableItem *i1 = (QIconViewPrivate::SortableItem *)n1; + QIconViewPrivate::SortableItem *i2 = (QIconViewPrivate::SortableItem *)n2; + + return i1->item->compare( i2->item ); +} + +#if defined(Q_C_CALLBACKS) +} +#endif + + +#ifndef QT_NO_TOOLTIP +class QIconViewToolTip : public QToolTip +{ +public: + QIconViewToolTip( QWidget *parent, QIconView *iv ); + virtual ~QIconViewToolTip(); + + void maybeTip( const QPoint &pos ); + +private: + QIconView *view; +}; + +QIconViewToolTip::QIconViewToolTip( QWidget *parent, QIconView *iv ) + : QToolTip( parent ), view( iv ) +{ +} + +QIconViewToolTip::~QIconViewToolTip() +{ +} + +void QIconViewToolTip::maybeTip( const QPoint &pos ) +{ + if ( !parentWidget() || !view || view->wordWrapIconText() || !view->showToolTips() ) + return; + + QIconViewItem *item = view->findItem( view->viewportToContents( pos ) ); + if ( !item || item->tmpText == item->itemText ) + return; + + QRect r( item->textRect( FALSE ) ); + QRect r2 = item->pixmapRect( FALSE ); + /* this probably should be | r, but QToolTip does not handle that + * well */ + + // At this point the rectangle is too small (it is the width of the icon) + // since we need it to be bigger than that, extend it here. + r.setWidth( view->d->fm->boundingRect( item->itemText ).width() + 4 ); + r = QRect( view->contentsToViewport( QPoint( r.x(), r.y() ) ), QSize( r.width(), r.height() ) ); + + r2 = QRect( view->contentsToViewport( QPoint( r2.x(), r2.y() ) ), QSize( r2.width(), r2.height() ) ); + tip( r2, item->itemText, r ); +} +#endif + + +class QIconViewItemPrivate +{ +public: + QIconViewPrivate::ItemContainer *container1, *container2; +}; + +#ifndef QT_NO_TEXTEDIT + +class QIconViewItemLineEdit : public QTextEdit +{ + friend class QIconViewItem; + +public: + QIconViewItemLineEdit( const QString &text, QWidget *parent, QIconViewItem *theItem, const char* name=0 ); + +protected: + void keyPressEvent( QKeyEvent *e ); + void focusOutEvent( QFocusEvent *e ); + +protected: + QIconViewItem *item; + QString startText; +private: +#if defined(Q_DISABLE_COPY) // Disabled copy constructor and operator= + QIconViewItemLineEdit( const QIconViewItemLineEdit & ); + QIconViewItemLineEdit &operator=( const QIconViewItemLineEdit & ); +#endif + +}; + +QIconViewItemLineEdit::QIconViewItemLineEdit( const QString &text, QWidget *parent, + QIconViewItem *theItem, const char *name ) + : QTextEdit( parent, name ), item( theItem ), startText( text ) +{ + setFrameStyle( QFrame::Plain | QFrame::Box ); + setLineWidth( 1 ); + + setHScrollBarMode( AlwaysOff ); + setVScrollBarMode( AlwaysOff ); + + setWordWrap( WidgetWidth ); + setWrapColumnOrWidth( item->iconView()->maxItemWidth() - + ( item->iconView()->itemTextPos() == QIconView::Bottom ? + 0 : item->pixmapRect().width() ) ); + document()->formatter()->setAllowBreakInWords( TRUE ); + resize( 200, 200 ); // ### some size, there should be a forceReformat() + setTextFormat( PlainText ); + setText( text ); + setAlignment( Qt::AlignCenter ); + + resize( wrapColumnOrWidth() + 2, heightForWidth( wrapColumnOrWidth() ) + 2 ); +} + +void QIconViewItemLineEdit::keyPressEvent( QKeyEvent *e ) +{ + if ( e->key() == Key_Escape ) { + item->QIconViewItem::setText( startText ); + item->cancelRenameItem(); + } else if ( e->key() == Key_Enter || + e->key() == Key_Return ) { + item->renameItem(); + } else { + QTextEdit::keyPressEvent( e ); + sync(); + resize( width(), document()->height() + 2 ); + + } +} + +void QIconViewItemLineEdit::focusOutEvent( QFocusEvent *e ) +{ + Q_UNUSED(e) // I need this to get rid of a Borland warning + if ( e->reason() != QFocusEvent::Popup ) + item->cancelRenameItem(); +} +#endif + +#ifndef QT_NO_DRAGANDDROP + + +/*! + \class QIconDragItem qiconview.h + \ingroup draganddrop + + \brief The QIconDragItem class encapsulates a drag item. + + \module iconview + + The QIconDrag class uses a list of QIconDragItems to support drag + and drop operations. + + In practice a QIconDragItem object (or an object of a class derived + from QIconDragItem) is created for each icon view item which is + dragged. Each of these QIconDragItems is stored in a QIconDrag + object. + + See QIconView::dragObject() for more information. + + See the \l fileiconview/qfileiconview.cpp and + \l iconview/simple_dd/main.cpp examples. +*/ + +/*! + Constructs a QIconDragItem with no data. +*/ + +QIconDragItem::QIconDragItem() + : ba( (int)strlen( "no data" ) ) +{ + memcpy( ba.data(), "no data", strlen( "no data" ) ); +} + +/*! + Destructor. +*/ + +QIconDragItem::~QIconDragItem() +{ +} + +/*! + Returns the data contained in the QIconDragItem. +*/ + +QByteArray QIconDragItem::data() const +{ + return ba; +} + +/*! + Sets the data for the QIconDragItem to the data stored in the + QByteArray \a d. +*/ + +void QIconDragItem::setData( const QByteArray &d ) +{ + ba = d; +} + +/*! + \reimp +*/ + +bool QIconDragItem::operator==( const QIconDragItem &i ) const +{ + return ba == i.ba; +} + +/*! + \reimp +*/ + +bool QIconDragDataItem::operator==( const QIconDragDataItem &i ) const +{ + return ( i.item == item && + i.data == data ); +} + +/*! + \reimp +*/ + +bool QIconDragData::operator==( const QIconDragData &i ) const +{ + return key_ == i.key_; +} + + +/*! + \class QIconDrag qiconview.h + + \brief The QIconDrag class supports drag and drop operations + within a QIconView. + + \ingroup draganddrop + \module iconview + + A QIconDrag object is used to maintain information about the + positions of dragged items and the data associated with the + dragged items. QIconViews are able to use this information to + paint the dragged items in the correct positions. Internally + QIconDrag stores the data associated with drag items in + QIconDragItem objects. + + If you want to use the extended drag-and-drop functionality of + QIconView, create a QIconDrag object in a reimplementation of + QIconView::dragObject(). Then create a QIconDragItem for each item + which should be dragged, set the data it represents with + QIconDragItem::setData(), and add each QIconDragItem to the drag + object using append(). + + The data in QIconDragItems is stored in a QByteArray and is + mime-typed (see QMimeSource and the + \link http://doc.trolltech.com/dnd.html Drag and Drop\endlink + overview). If you want to use your own mime-types derive a class + from QIconDrag and reimplement format(), encodedData() and + canDecode(). + + The fileiconview example program demonstrates the use of the + QIconDrag class including subclassing and reimplementing + dragObject(), format(), encodedData() and canDecode(). See the files + \c qt/examples/fileiconview/qfileiconview.h and + \c qt/examples/fileiconview/qfileiconview.cpp. + + \sa QMimeSource::format() +*/ +// ### consider using \dontinclude and friends there +// ### Not here in the module overview instead... + +/*! + Constructs a drag object called \a name, which is a child of \a + dragSource. + + Note that the drag object will be deleted when \a dragSource is deleted. +*/ + +QIconDrag::QIconDrag( QWidget * dragSource, const char* name ) + : QDragObject( dragSource, name ) +{ + d = new QIconDragPrivate; +} + +/*! + Destructor. +*/ + +QIconDrag::~QIconDrag() +{ + delete d; +} + +/*! + Append the QIconDragItem, \a i, to the QIconDrag object's list of + items. You must also supply the geometry of the pixmap, \a pr, and + the textual caption, \a tr. + + \sa QIconDragItem +*/ + +void QIconDrag::append( const QIconDragItem &i, const QRect &pr, const QRect &tr ) +{ + d->items.append( QIconDragDataItem( i, QIconDragData( pr, tr ) ) ); +} + +/*! + \reimp +*/ + +const char* QIconDrag::format( int i ) const +{ + if ( i == 0 ) + return "application/x-qiconlist"; + return 0; +} + +/*! + Returns the encoded data of the drag object if \a mime is + application/x-qiconlist. +*/ + +QByteArray QIconDrag::encodedData( const char* mime ) const +{ + if ( d->items.count() <= 0 || QString( mime ) != + "application/x-qiconlist" ) + return QByteArray(); + + QValueList<QIconDragDataItem>::ConstIterator it = d->items.begin(); + QString s; + for ( ; it != d->items.end(); ++it ) { + QString k( "%1$@@$%2$@@$%3$@@$%4$@@$%5$@@$%6$@@$%7$@@$%8$@@$" ); + k = k.arg( (*it).item.pixmapRect().x() ).arg( + (*it).item.pixmapRect().y() ).arg( (*it).item.pixmapRect().width() ). + arg( (*it).item.pixmapRect().height() ).arg( + (*it).item.textRect().x() ).arg( (*it).item.textRect().y() ). + arg( (*it).item.textRect().width() ).arg( + (*it).item.textRect().height() ); + k += QString( (*it).data.data() ) + "$@@$"; + s += k; + } + + QByteArray a( s.length() + 1 ); + memcpy( a.data(), s.latin1(), a.size() ); + return a; +} + +/*! + Returns TRUE if \a e can be decoded by the QIconDrag, otherwise + return FALSE. +*/ + +bool QIconDrag::canDecode( QMimeSource* e ) +{ + if ( e->provides( "application/x-qiconlist" ) ) + return TRUE; + return FALSE; +} + +/*! + Decodes the data which is stored (encoded) in \a e and, if + successful, fills the \a list of icon drag items with the decoded + data. Returns TRUE if there was some data, FALSE otherwise. +*/ + +bool QIconDragPrivate::decode( QMimeSource* e, QValueList<QIconDragDataItem> &lst ) +{ + QByteArray ba = e->encodedData( "application/x-qiconlist" ); + if ( ba.size() ) { + lst.clear(); + QString s = ba.data(); + QIconDragDataItem item; + QRect ir, tr; + QStringList l = QStringList::split( "$@@$", s ); + + int i = 0; + QStringList::Iterator it = l.begin(); + for ( ; it != l.end(); ++it ) { + if ( i == 0 ) { + ir.setX( ( *it ).toInt() ); + } else if ( i == 1 ) { + ir.setY( ( *it ).toInt() ); + } else if ( i == 2 ) { + ir.setWidth( ( *it ).toInt() ); + } else if ( i == 3 ) { + ir.setHeight( ( *it ).toInt() ); + } else if ( i == 4 ) { + tr.setX( ( *it ).toInt() ); + } else if ( i == 5 ) { + tr.setY( ( *it ).toInt() ); + } else if ( i == 6 ) { + tr.setWidth( ( *it ).toInt() ); + } else if ( i == 7 ) { + tr.setHeight( ( *it ).toInt() ); + } else if ( i == 8 ) { + QByteArray d( ( *it ).length() ); + memcpy( d.data(), ( *it ).latin1(), ( *it ).length() ); + item.item.setPixmapRect( ir ); + item.item.setTextRect( tr ); + item.data.setData( d ); + lst.append( item ); + } + ++i; + if ( i > 8 ) + i = 0; + } + return TRUE; + } + + return FALSE; +} + +QIconDragData::QIconDragData() + : iconRect_(), textRect_() +{ +} + +QIconDragData::QIconDragData( const QRect &ir, const QRect &tr ) + : iconRect_( ir ), textRect_( tr ) +{ +} + +QRect QIconDragData::textRect() const +{ + return textRect_; +} + +QRect QIconDragData::pixmapRect() const +{ + return iconRect_; +} + +void QIconDragData::setPixmapRect( const QRect &r ) +{ + iconRect_ = r; +} + +void QIconDragData::setTextRect( const QRect &r ) +{ + textRect_ = r; +} + +#endif + + +/*! + \class QIconViewItem qiconview.h + \brief The QIconViewItem class provides a single item in a QIconView. + + \ingroup advanced + \module iconview + + A QIconViewItem contains an icon, a string and optionally a sort + key, and can display itself in a QIconView. + The class is designed to be very similar to QListView and QListBox + in use, both via instantiation and subclassing. + + The simplest way to create a QIconViewItem and insert it into a + QIconView is to construct the item passing the constructor a + pointer to the icon view, a string and an icon: + + \code + (void) new QIconViewItem( + iconView, // A pointer to a QIconView + "This is the text of the item", + aPixmap ); + \endcode + + By default the text of an icon view item may not be edited by the + user but calling setRenameEnabled(TRUE) will allow the user to + perform in-place editing of the item's text. + + When the icon view is deleted all items in it are deleted + automatically. + + The QIconView::firstItem() and QIconViewItem::nextItem() functions + provide a means of iterating over all the items in a QIconView: + + \code + QIconViewItem *item; + for ( item = iconView->firstItem(); item; item = item->nextItem() ) + do_something_with( item ); + \endcode + + The item's icon view is available from iconView(), and its + position in the icon view from index(). + + The item's selection status is available from isSelected() and is + set and controlled by setSelected() and isSelectable(). + + The text and icon can be set with setText() and setPixmap() and + retrieved with text() and pixmap(). The item's sort key defaults + to text() but may be set with setKey() and retrieved with key(). + The comparison function, compare() uses key(). + + Items may be repositioned with move() and moveBy(). An item's + geometry is available from rect(), x(), y(), width(), height(), + size(), pos(), textRect() and pixmapRect(). You can also test + against the position of a point with contains() and intersects(). + + To remove an item from an icon view, just delete the item. The + QIconViewItem destructor removes it cleanly from its icon view. + + Because the icon view is designed to use drag-and-drop, the icon + view item also has functions for drag-and-drop which may be + reimplemented. + + \target pixmap-size-limit + <b>Note:</b> Pixmaps with individual dimensions larger than 300 pixels may + not be displayed properly, depending on the \link QIconView::Arrangement + arrangement in use\endlink. For example, pixmaps wider than 300 pixels + will not be arranged correctly if the icon view uses a + \l QIconView::TopToBottom arrangement, and pixmaps taller than 300 pixels + will not be arranged correctly if the icon view uses a + \l QIconView::LeftToRight arrangement. +*/ + +/*! + Constructs a QIconViewItem and inserts it into icon view \a parent + with no text and a default icon. +*/ + +QIconViewItem::QIconViewItem( QIconView *parent ) + : view( parent ), itemText(), itemIcon( unknown_icon ) +{ + init(); +} + +/*! + Constructs a QIconViewItem and inserts it into the icon view \a + parent with no text and a default icon, after the icon view item + \a after. +*/ + +QIconViewItem::QIconViewItem( QIconView *parent, QIconViewItem *after ) + : view( parent ), itemText(), itemIcon( unknown_icon ), + prev( 0 ), next( 0 ) +{ + init( after ); +} + +/*! + Constructs an icon view item and inserts it into the icon view \a + parent using \a text as the text and a default icon. +*/ + +QIconViewItem::QIconViewItem( QIconView *parent, const QString &text ) + : view( parent ), itemText( text ), itemIcon( unknown_icon ) +{ + init( 0 ); +} + +/*! + Constructs an icon view item and inserts it into the icon view \a + parent using \a text as the text and a default icon, after the + icon view item \a after. +*/ + +QIconViewItem::QIconViewItem( QIconView *parent, QIconViewItem *after, + const QString &text ) + : view( parent ), itemText( text ), itemIcon( unknown_icon ) +{ + init( after ); +} + +/*! + Constructs an icon view item and inserts it into the icon view \a + parent using \a text as the text and \a icon as the icon. +*/ + +QIconViewItem::QIconViewItem( QIconView *parent, const QString &text, + const QPixmap &icon ) + : view( parent ), + itemText( text ), itemIcon( new QPixmap( icon ) ) +{ + init( 0 ); +} + + +/*! + Constructs an icon view item and inserts it into the icon view \a + parent using \a text as the text and \a icon as the icon, after + the icon view item \a after. + + \sa setPixmap() +*/ + +QIconViewItem::QIconViewItem( QIconView *parent, QIconViewItem *after, + const QString &text, const QPixmap &icon ) + : view( parent ), itemText( text ), itemIcon( new QPixmap( icon ) ) +{ + init( after ); +} + +/*! + Constructs an icon view item and inserts it into the icon view \a + parent using \a text as the text and \a picture as the icon. +*/ + +#ifndef QT_NO_PICTURE +QIconViewItem::QIconViewItem( QIconView *parent, const QString &text, + const QPicture &picture ) + : view( parent ), itemText( text ), itemIcon( 0 ) +{ + init( 0, new QPicture( picture ) ); +} + +/*! + Constructs an icon view item and inserts it into the icon view \a + parent using \a text as the text and \a picture as the icon, after + the icon view item \a after. +*/ + +QIconViewItem::QIconViewItem( QIconView *parent, QIconViewItem *after, + const QString &text, const QPicture &picture ) + : view( parent ), itemText( text ), itemIcon( 0 ) +{ + init( after, new QPicture( picture ) ); +} +#endif + +/*! + This private function initializes the icon view item and inserts it + into the icon view. +*/ + +void QIconViewItem::init( QIconViewItem *after +#ifndef QT_NO_PICTURE + , QPicture *pic +#endif + ) +{ + d = new QIconViewItemPrivate; + d->container1 = 0; + d->container2 = 0; + prev = next = 0; + allow_rename = FALSE; + allow_drag = TRUE; + allow_drop = TRUE; + visible = TRUE; + selected = FALSE; + selectable = TRUE; +#ifndef QT_NO_TEXTEDIT + renameBox = 0; +#endif +#ifndef QT_NO_PICTURE + itemPic = pic; +#endif + if ( view ) { + itemKey = itemText; + dirty = TRUE; + wordWrapDirty = TRUE; + itemRect = QRect( -1, -1, 0, 0 ); + calcRect(); + view->insertItem( this, after ); + } +} + +/*! + Destroys the icon view item and tells the parent icon view that + the item has been destroyed. +*/ + +QIconViewItem::~QIconViewItem() +{ +#ifndef QT_NO_TEXTEDIT + removeRenameBox(); +#endif + if ( view && !view->d->clearing ) + view->takeItem( this ); + view = 0; + if ( itemIcon && itemIcon->serialNumber() != unknown_icon->serialNumber() ) + delete itemIcon; +#ifndef QT_NO_PICTURE + delete itemPic; +#endif + delete d; +} + +int QIconViewItem::RTTI = 0; + +/*! + Returns 0. + + Make your derived classes return their own values for rtti(), so + that you can distinguish between icon view item types. You should + use values greater than 1000, preferably a large random number, to + allow for extensions to this class. +*/ + +int QIconViewItem::rtti() const +{ + return RTTI; +} + +/*! + If \a b is TRUE, the item is made visible; otherwise it is hidden. +*/ + +void QIconViewItem::setVisible( bool b ) +{ + if ( b == (bool)visible ) + return; + QIconView *iv = iconView(); + if ( !iv ) + return; + visible = b; + if ( iv ) + iv->updateContents(); +} + +/*! + Returns TRUE if the item is visible; otherwise returns FALSE. + + \sa setVisible() +*/ + +bool QIconViewItem::isVisible() const +{ + return (bool)visible; +} + +/*! + Sets \a text as the text of the icon view item. This function + might be a no-op if you reimplement text(). + + \sa text() +*/ + +void QIconViewItem::setText( const QString &text ) +{ + if ( text == itemText ) + return; + + wordWrapDirty = TRUE; + itemText = text; + if ( itemKey.isEmpty() ) + itemKey = itemText; + + QRect oR = rect(); + calcRect(); + oR = oR.unite( rect() ); + + if ( view ) { + if ( QRect( view->contentsX(), view->contentsY(), + view->visibleWidthSB(), view->visibleHeightSB() ). + intersects( oR ) ) + view->repaintContents( oR.x() - 1, oR.y() - 1, + oR.width() + 2, oR.height() + 2, FALSE ); + } +} + +/*! + Sets \a k as the sort key of the icon view item. By default + text() is used for sorting. + + \sa compare() +*/ + +void QIconViewItem::setKey( const QString &k ) +{ + if ( k == itemKey ) + return; + + itemKey = k; +} + +/*! + Sets \a icon as the item's icon in the icon view. This function + might be a no-op if you reimplement pixmap(). + + <b>Note:</b> Pixmaps with individual dimensions larger than 300 pixels may + not be displayed properly, depending on the \link QIconView::Arrangement + arrangement in use\endlink. See the \link #pixmap-size-limit main class + documentation\endlink for details. + + \sa pixmap() +*/ + +void QIconViewItem::setPixmap( const QPixmap &icon ) +{ + if (isVisible() == FALSE) + return; + + if ( itemIcon && itemIcon == unknown_icon ) + itemIcon = 0; + + if ( itemIcon ) + *itemIcon = icon; + else + itemIcon = new QPixmap( icon ); + QRect oR = rect(); + calcRect(); + oR = oR.unite( rect() ); + + if ( view ) { + if ( QRect( view->contentsX(), view->contentsY(), + view->visibleWidthSB(), view->visibleHeightSB() ). + intersects( oR ) ) + view->repaintContents( oR.x() - 1, oR.y() - 1, + oR.width() + 2, oR.height() + 2, FALSE ); + } +} + +/*! + Sets \a icon as the item's icon in the icon view. This function + might be a no-op if you reimplement picture(). + + \sa picture() +*/ + +#ifndef QT_NO_PICTURE +void QIconViewItem::setPicture( const QPicture &icon ) +{ + // clear assigned pixmap if any + if ( itemIcon ) { + if ( itemIcon == unknown_icon ) { + itemIcon = 0; + } else { + delete itemIcon; + itemIcon = 0; + } + } + if ( itemPic ) + delete itemPic; + itemPic = new QPicture( icon ); + + QRect oR = rect(); + calcRect(); + oR = oR.unite( rect() ); + + if ( view ) { + if ( QRect( view->contentsX(), view->contentsY(), + view->visibleWidthSB(), view->visibleHeightSB() ). + intersects( oR ) ) + view->repaintContents( oR.x() - 1, oR.y() - 1, + oR.width() + 2, oR.height() + 2, FALSE ); + } +} +#endif + +/*! + \overload + + Sets \a text as the text of the icon view item. If \a recalc is + TRUE, the icon view's layout is recalculated. If \a redraw is TRUE + (the default), the icon view is repainted. + + \sa text() +*/ + +void QIconViewItem::setText( const QString &text, bool recalc, bool redraw ) +{ + if ( text == itemText ) + return; + + wordWrapDirty = TRUE; + itemText = text; + + if ( recalc ) + calcRect(); + if ( redraw ) + repaint(); +} + +/*! + \overload + + Sets \a icon as the item's icon in the icon view. If \a recalc is + TRUE, the icon view's layout is recalculated. If \a redraw is TRUE + (the default), the icon view is repainted. + + <b>Note:</b> Pixmaps with individual dimensions larger than 300 pixels may + not be displayed properly, depending on the \link QIconView::Arrangement + arrangement in use\endlink. See the \link #pixmap-size-limit main class + documentation\endlink for details. + + \sa pixmap() +*/ + +void QIconViewItem::setPixmap( const QPixmap &icon, bool recalc, bool redraw ) +{ + if (isVisible() == FALSE) + return; + + if ( itemIcon && itemIcon == unknown_icon ) + itemIcon = 0; + + if ( itemIcon ) + *itemIcon = icon; + else + itemIcon = new QPixmap( icon ); + + if ( redraw ) { + if ( recalc ) { + QRect oR = rect(); + calcRect(); + oR = oR.unite( rect() ); + + if ( view ) { + if ( QRect( view->contentsX(), view->contentsY(), + view->visibleWidthSB(), view->visibleHeightSB() ). + intersects( oR ) ) + view->repaintContents( oR.x() - 1, oR.y() - 1, + oR.width() + 2, oR.height() + 2, FALSE ); + } + } else { + repaint(); + } + } else if ( recalc ) { + calcRect(); + } +} + +/*! + If \a allow is TRUE, the user can rename the icon view item by + clicking on the text (or pressing F2) while the item is selected + (in-place renaming). If \a allow is FALSE, in-place renaming is + not possible. +*/ + +void QIconViewItem::setRenameEnabled( bool allow ) +{ + allow_rename = (uint)allow; +} + +/*! + If \a allow is TRUE, the icon view permits the user to drag the + icon view item either to another position within the icon view or + to somewhere outside of it. If \a allow is FALSE, the item cannot + be dragged. +*/ + +void QIconViewItem::setDragEnabled( bool allow ) +{ + allow_drag = (uint)allow; +} + +/*! + If \a allow is TRUE, the icon view lets the user drop something on + this icon view item. +*/ + +void QIconViewItem::setDropEnabled( bool allow ) +{ + allow_drop = (uint)allow; +} + +/*! + Returns the text of the icon view item. Normally you set the text + of the item with setText(), but sometimes it's inconvenient to + call setText() for every item; so you can subclass QIconViewItem, + reimplement this function, and return the text of the item. If you + do this, you must call calcRect() manually each time the text + (and therefore its size) changes. + + \sa setText() +*/ + +QString QIconViewItem::text() const +{ + return itemText; +} + +/*! + Returns the key of the icon view item or text() if no key has been + explicitly set. + + \sa setKey(), compare() +*/ + +QString QIconViewItem::key() const +{ + return itemKey; +} + +/*! + Returns the icon of the icon view item if it is a pixmap, or 0 if + it is a picture. In the latter case use picture() instead. + Normally you set the pixmap of the item with setPixmap(), but + sometimes it's inconvenient to call setPixmap() for every item. So + you can subclass QIconViewItem, reimplement this function and + return a pointer to the item's pixmap. If you do this, you \e must + call calcRect() manually each time the size of this pixmap + changes. + + \sa setPixmap() +*/ + +QPixmap *QIconViewItem::pixmap() const +{ + return itemIcon; +} + +/*! + Returns the icon of the icon view item if it is a picture, or 0 if + it is a pixmap. In the latter case use pixmap() instead. Normally + you set the picture of the item with setPicture(), but sometimes + it's inconvenient to call setPicture() for every item. So you can + subclass QIconViewItem, reimplement this function and return a + pointer to the item's picture. If you do this, you \e must call + calcRect() manually each time the size of this picture changes. + + \sa setPicture() +*/ + +#ifndef QT_NO_PICTURE +QPicture *QIconViewItem::picture() const +{ + return itemPic; +} +#endif + +/*! + Returns TRUE if the item can be renamed by the user with in-place + renaming; otherwise returns FALSE. + + \sa setRenameEnabled() +*/ + +bool QIconViewItem::renameEnabled() const +{ + return (bool)allow_rename; +} + +/*! + Returns TRUE if the user is allowed to drag the icon view item; + otherwise returns FALSE. + + \sa setDragEnabled() +*/ + +bool QIconViewItem::dragEnabled() const +{ + return (bool)allow_drag; +} + +/*! + Returns TRUE if the user is allowed to drop something onto the + item; otherwise returns FALSE. + + \sa setDropEnabled() +*/ + +bool QIconViewItem::dropEnabled() const +{ + return (bool)allow_drop; +} + +/*! + Returns a pointer to this item's icon view parent. +*/ + +QIconView *QIconViewItem::iconView() const +{ + return view; +} + +/*! + Returns a pointer to the previous item, or 0 if this is the first + item in the icon view. + + \sa nextItem() QIconView::firstItem() +*/ + +QIconViewItem *QIconViewItem::prevItem() const +{ + return prev; +} + +/*! + Returns a pointer to the next item, or 0 if this is the last item + in the icon view. + + To find the first item use QIconView::firstItem(). + + Example: + \code + QIconViewItem *item; + for ( item = iconView->firstItem(); item; item = item->nextItem() ) + do_something_with( item ); + \endcode + + \sa prevItem() +*/ + +QIconViewItem *QIconViewItem::nextItem() const +{ + return next; +} + +/*! + Returns the index of this item in the icon view, or -1 if an error + occurred. +*/ + +int QIconViewItem::index() const +{ + if ( view ) + return view->index( this ); + + return -1; +} + + + +/*! + \overload + + This variant is equivalent to calling the other variant with \e cb + set to FALSE. +*/ + +void QIconViewItem::setSelected( bool s ) +{ + setSelected( s, FALSE ); +} + +/*! + Selects or unselects the item, depending on \a s; it may also + unselect other items, depending on QIconView::selectionMode() and + \a cb. + + If \a s is FALSE, the item is unselected. + + If \a s is TRUE and QIconView::selectionMode() is \c Single, the + item is selected and the item previously selected is unselected. + + If \a s is TRUE and QIconView::selectionMode() is \c Extended, the + item is selected. If \a cb is TRUE, the selection state of the + other items is left unchanged. If \a cb is FALSE (the default) all + other items are unselected. + + If \a s is TRUE and QIconView::selectionMode() is \c Multi, the + item is selected. + + Note that \a cb is used only if QIconView::selectionMode() is \c + Extended; cb defaults to FALSE. + + All items whose selection status changes repaint themselves. +*/ + +void QIconViewItem::setSelected( bool s, bool cb ) +{ + if ( !view ) + return; + if ( view->selectionMode() != QIconView::NoSelection && + selectable && s != (bool)selected ) { + + if ( view->d->selectionMode == QIconView::Single && this != view->d->currentItem ) { + QIconViewItem *o = view->d->currentItem; + if ( o && o->selected ) + o->selected = FALSE; + view->d->currentItem = this; + if ( o ) + o->repaint(); + emit view->currentChanged( this ); + } + + if ( !s ) { + selected = FALSE; + } else { + if ( view->d->selectionMode == QIconView::Single && view->d->currentItem ) { + view->d->currentItem->selected = FALSE; + } + if ( ( view->d->selectionMode == QIconView::Extended && !cb ) || + view->d->selectionMode == QIconView::Single ) { + bool b = view->signalsBlocked(); + view->blockSignals( TRUE ); + view->selectAll( FALSE ); + view->blockSignals( b ); + } + selected = s; + } + + repaint(); + if ( !view->signalsBlocked() ) { + bool emitIt = view->d->selectionMode == QIconView::Single && s; + QIconView *v = view; + emit v->selectionChanged(); + if ( emitIt ) + emit v->selectionChanged( this ); + } + } +} + +/*! + Sets this item to be selectable if \a enable is TRUE (the default) + or unselectable if \a enable is FALSE. + + The user is unable to select a non-selectable item using either + the keyboard or the mouse. (The application programmer can select + an item in code regardless of this setting.) + + \sa isSelectable() +*/ + +void QIconViewItem::setSelectable( bool enable ) +{ + selectable = (uint)enable; +} + +/*! + Returns TRUE if the item is selected; otherwise returns FALSE. + + \sa setSelected() +*/ + +bool QIconViewItem::isSelected() const +{ + return (bool)selected; +} + +/*! + Returns TRUE if the item is selectable; otherwise returns FALSE. + + \sa setSelectable() +*/ + +bool QIconViewItem::isSelectable() const +{ + return (bool)selectable; +} + +/*! + Repaints the item. +*/ + +void QIconViewItem::repaint() +{ + if ( view ) + view->repaintItem( this ); +} + +/*! + Moves the item to position (\a x, \a y) in the icon view (these + are contents coordinates). +*/ + +bool QIconViewItem::move( int x, int y ) +{ + if ( x == this->x() && y == this->y() ) + return FALSE; + itemRect.setRect( x, y, itemRect.width(), itemRect.height() ); + checkRect(); + if ( view ) + view->updateItemContainer( this ); + return TRUE; +} + +/*! + Moves the item \a dx pixels in the x-direction and \a dy pixels in + the y-direction. +*/ + +void QIconViewItem::moveBy( int dx, int dy ) +{ + itemRect.moveBy( dx, dy ); + checkRect(); + if ( view ) + view->updateItemContainer( this ); +} + +/*! + \overload + + Moves the item to the point \a pnt. +*/ + +bool QIconViewItem::move( const QPoint &pnt ) +{ + return move( pnt.x(), pnt.y() ); +} + +/*! + \overload + + Moves the item by the x, y values in point \a pnt. +*/ + +void QIconViewItem::moveBy( const QPoint &pnt ) +{ + moveBy( pnt.x(), pnt.y() ); +} + +/*! + Returns the bounding rectangle of the item (in contents + coordinates). +*/ + +QRect QIconViewItem::rect() const +{ + return itemRect; +} + +/*! + Returns the x-coordinate of the item (in contents coordinates). +*/ + +int QIconViewItem::x() const +{ + return itemRect.x(); +} + +/*! + Returns the y-coordinate of the item (in contents coordinates). +*/ + +int QIconViewItem::y() const +{ + return itemRect.y(); +} + +/*! + Returns the width of the item. +*/ + +int QIconViewItem::width() const +{ + return QMAX( itemRect.width(), QApplication::globalStrut().width() ); +} + +/*! + Returns the height of the item. +*/ + +int QIconViewItem::height() const +{ + return QMAX( itemRect.height(), QApplication::globalStrut().height() ); +} + +/*! + Returns the size of the item. +*/ + +QSize QIconViewItem::size() const +{ + return QSize( itemRect.width(), itemRect.height() ); +} + +/*! + Returns the position of the item (in contents coordinates). +*/ + +QPoint QIconViewItem::pos() const +{ + return QPoint( itemRect.x(), itemRect.y() ); +} + +/*! + Returns the bounding rectangle of the item's text. + + If \a relative is TRUE, (the default), the returned rectangle is + relative to the origin of the item's rectangle. If \a relative is + FALSE, the returned rectangle is relative to the origin of the + icon view's contents coordinate system. +*/ + +QRect QIconViewItem::textRect( bool relative ) const +{ + if ( relative ) + return itemTextRect; + else + return QRect( x() + itemTextRect.x(), y() + itemTextRect.y(), itemTextRect.width(), itemTextRect.height() ); +} + +/*! + Returns the bounding rectangle of the item's icon. + + If \a relative is TRUE, (the default), the rectangle is relative to + the origin of the item's rectangle. If \a relative is FALSE, the + returned rectangle is relative to the origin of the icon view's + contents coordinate system. +*/ + +QRect QIconViewItem::pixmapRect( bool relative ) const +{ + if ( relative ) + return itemIconRect; + else + return QRect( x() + itemIconRect.x(), y() + itemIconRect.y(), itemIconRect.width(), itemIconRect.height() ); +} + +/*! + Returns TRUE if the item contains the point \a pnt (in contents + coordinates); otherwise returns FALSE. +*/ + +bool QIconViewItem::contains( const QPoint& pnt ) const +{ + QRect textArea = textRect( FALSE ); + QRect pixmapArea = pixmapRect( FALSE ); + if ( iconView()->itemTextPos() == QIconView::Bottom ) + textArea.setTop( pixmapArea.bottom() ); + else + textArea.setLeft( pixmapArea.right() ); + return textArea.contains( pnt ) || pixmapArea.contains( pnt ); +} + +/*! + Returns TRUE if the item intersects the rectangle \a r (in + contents coordinates); otherwise returns FALSE. +*/ + +bool QIconViewItem::intersects( const QRect& r ) const +{ + return ( textRect( FALSE ).intersects( r ) || + pixmapRect( FALSE ).intersects( r ) ); +} + +/*! + \fn bool QIconViewItem::acceptDrop( const QMimeSource *mime ) const + + Returns TRUE if you can drop things with a QMimeSource of \a mime + onto this item; otherwise returns FALSE. + + The default implementation always returns FALSE. You must subclass + QIconViewItem and reimplement acceptDrop() to accept drops. +*/ + +bool QIconViewItem::acceptDrop( const QMimeSource * ) const +{ + return FALSE; +} + +#ifndef QT_NO_TEXTEDIT +/*! + Starts in-place renaming of an icon, if allowed. + + This function sets up the icon view so that the user can edit the + item text, and then returns. When the user is done, setText() will + be called and QIconView::itemRenamed() will be emitted (unless the + user canceled, e.g. by pressing the Escape key). + + \sa setRenameEnabled() +*/ + +void QIconViewItem::rename() +{ + if ( !view ) + return; + if ( renameBox ) + removeRenameBox(); + oldRect = rect(); + renameBox = new QIconViewItemLineEdit( itemText, view->viewport(), this, "qt_renamebox" ); + iconView()->ensureItemVisible( this ); + QRect tr( textRect( FALSE ) ); + view->addChild( renameBox, tr.x() + ( tr.width() / 2 - renameBox->width() / 2 ), tr.y() - 3 ); + renameBox->selectAll(); + view->viewport()->setFocusProxy( renameBox ); + renameBox->setFocus(); + renameBox->show(); + Q_ASSERT( view->d->renamingItem == 0L ); + view->d->renamingItem = this; +} +#endif + +/*! + Compares this icon view item to \a i. Returns -1 if this item is + less than \a i, 0 if they are equal, and 1 if this icon view item + is greater than \a i. + + The default implementation compares the item keys (key()) using + QString::localeAwareCompare(). A reimplementation may use + different values and a different comparison function. Here is a + reimplementation that uses plain Unicode comparison: + + \code + int MyIconViewItem::compare( QIconViewItem *i ) const + { + return key().compare( i->key() ); + } + \endcode + + \sa key() QString::localeAwareCompare() QString::compare() +*/ + +int QIconViewItem::compare( QIconViewItem *i ) const +{ + return key().localeAwareCompare( i->key() ); +} + +#ifndef QT_NO_TEXTEDIT +/*! + This private function is called when the user pressed Return during + in-place renaming. +*/ + +void QIconViewItem::renameItem() +{ + if ( !renameBox || !view ) + return; + + if ( !view->d->wordWrapIconText ) { + wordWrapDirty = TRUE; + calcRect(); + } + QRect r = itemRect; + setText( renameBox->text() ); + view->repaintContents( oldRect.x() - 1, oldRect.y() - 1, oldRect.width() + 2, oldRect.height() + 2, FALSE ); + view->repaintContents( r.x() - 1, r.y() - 1, r.width() + 2, r.height() + 2, FALSE ); + removeRenameBox(); + + view->emitRenamed( this ); +} + +/*! + Cancels in-place renaming. +*/ + +void QIconViewItem::cancelRenameItem() +{ + if ( !view ) + return; + + QRect r = itemRect; + calcRect(); + view->repaintContents( oldRect.x() - 1, oldRect.y() - 1, oldRect.width() + 2, oldRect.height() + 2, FALSE ); + view->repaintContents( r.x() - 1, r.y() - 1, r.width() + 2, r.height() + 2, FALSE ); + + if ( !renameBox ) + return; + + removeRenameBox(); +} + +/*! + Removes the editbox that is used for in-place renaming. +*/ + +void QIconViewItem::removeRenameBox() +{ + if ( !renameBox || !view ) + return; + + bool resetFocus = view->viewport()->focusProxy() == renameBox; + renameBox->hide(); + renameBox->deleteLater(); + renameBox = 0; + if ( resetFocus ) { + view->viewport()->setFocusProxy( view ); + view->setFocus(); + } + Q_ASSERT( view->d->renamingItem == this ); + view->d->renamingItem = 0L; +} +#endif + +/*! + This virtual function is responsible for calculating the + rectangles returned by rect(), textRect() and pixmapRect(). + setRect(), setTextRect() and setPixmapRect() are provided mainly + for reimplementations of this function. + + \a text_ is an internal parameter which defaults to QString::null. +*/ + +void QIconViewItem::calcRect( const QString &text_ ) +{ + if ( !view ) // ##### + return; + + wordWrapDirty = TRUE; + int pw = 0; + int ph = 0; + +#ifndef QT_NO_PICTURE + if ( picture() ) { + QRect br = picture()->boundingRect(); + pw = br.width() + 2; + ph = br.height() + 2; + } else +#endif + { + pw = ( pixmap() ? pixmap() : unknown_icon )->width() + 2; + ph = ( pixmap() ? pixmap() : unknown_icon )->height() + 2; + } + + itemIconRect.setWidth( pw ); + itemIconRect.setHeight( ph ); + + calcTmpText(); + + QString t = text_; + if ( t.isEmpty() ) { + if ( view->d->wordWrapIconText ) + t = itemText; + else + t = tmpText; + } + + int tw = 0; + int th = 0; + // ##### TODO: fix font bearings! + QRect r; + if ( view->d->wordWrapIconText ) { + r = QRect( view->d->fm->boundingRect( 0, 0, iconView()->maxItemWidth() - + ( iconView()->itemTextPos() == QIconView::Bottom ? 0 : + pixmapRect().width() ), + 0xFFFFFFFF, AlignHCenter | WordBreak | BreakAnywhere, t ) ); + r.setWidth( r.width() + 4 ); + } else { + r = QRect( 0, 0, view->d->fm->width( t ), view->d->fm->height() ); + r.setWidth( r.width() + 4 ); + } + + if ( r.width() > iconView()->maxItemWidth() - + ( iconView()->itemTextPos() == QIconView::Bottom ? 0 : + pixmapRect().width() ) ) + r.setWidth( iconView()->maxItemWidth() - ( iconView()->itemTextPos() == QIconView::Bottom ? 0 : + pixmapRect().width() ) ); + + tw = r.width(); + th = r.height(); + if ( tw < view->d->fm->width( "X" ) ) + tw = view->d->fm->width( "X" ); + + itemTextRect.setWidth( tw ); + itemTextRect.setHeight( th ); + + int w = 0; + int h = 0; + if ( view->itemTextPos() == QIconView::Bottom ) { + w = QMAX( itemTextRect.width(), itemIconRect.width() ); + h = itemTextRect.height() + itemIconRect.height() + 1; + + itemRect.setWidth( w ); + itemRect.setHeight( h ); + + itemTextRect = QRect( ( width() - itemTextRect.width() ) / 2, height() - itemTextRect.height(), + itemTextRect.width(), itemTextRect.height() ); + itemIconRect = QRect( ( width() - itemIconRect.width() ) / 2, 0, + itemIconRect.width(), itemIconRect.height() ); + } else { + h = QMAX( itemTextRect.height(), itemIconRect.height() ); + w = itemTextRect.width() + itemIconRect.width() + 1; + + itemRect.setWidth( w ); + itemRect.setHeight( h ); + + itemTextRect = QRect( width() - itemTextRect.width(), ( height() - itemTextRect.height() ) / 2, + itemTextRect.width(), itemTextRect.height() ); + itemIconRect = QRect( 0, ( height() - itemIconRect.height() ) / 2, + itemIconRect.width(), itemIconRect.height() ); + } + if ( view ) + view->updateItemContainer( this ); +} + +/*! + Paints the item using the painter \a p and the color group \a cg. + If you want the item to be drawn with a different font or color, + reimplement this function, change the values of the color group or + the painter's font, and then call the QIconViewItem::paintItem() + with the changed values. +*/ + +void QIconViewItem::paintItem( QPainter *p, const QColorGroup &cg ) +{ + if ( !view ) + return; + + p->save(); + + if ( isSelected() ) { + p->setPen( cg.highlightedText() ); + } else { + p->setPen( cg.text() ); + } + + calcTmpText(); + +#ifndef QT_NO_PICTURE + if ( picture() ) { + QPicture *pic = picture(); + if ( isSelected() ) { + p->setBrush( QBrush( cg.highlight(), QBrush::Dense4Pattern ) ); + p->setPen( QPen( cg.highlight(), QBrush::Dense4Pattern ) ); + p->drawRoundRect( pixmapRect( FALSE ), + 1000 / pixmapRect( FALSE ).width(), + 1000 / pixmapRect( FALSE ).height() ); + } + p->drawPicture( x()-pic->boundingRect().x(), y()-pic->boundingRect().y(), *pic ); + if ( isSelected() ) { + p->setBrush( QBrush( cg.highlight() ) ); + p->setPen( QPen( cg.highlight() ) ); + p->drawRoundRect( textRect( FALSE ), + 1000 / textRect( FALSE ).width(), + 1000 / textRect( FALSE ).height() ); + p->setPen( QPen( cg.highlightedText() ) ); + } else if ( view->d->itemTextBrush != NoBrush ) { + p->setBrush( view->d->itemTextBrush ); + p->setPen( QPen( view->d->itemTextBrush.color() ) ); + p->drawRoundRect( textRect( FALSE ), + 1000 / textRect( FALSE ).width(), + 1000 / textRect( FALSE ).height() ); + } + + int align = view->itemTextPos() == QIconView::Bottom ? AlignHCenter : AlignAuto; + if ( view->d->wordWrapIconText ) + align |= WordBreak | BreakAnywhere; + p->drawText( textRect( FALSE ), align, view->d->wordWrapIconText ? itemText : tmpText ); + p->restore(); + return; + } +#endif + bool textOnBottom = ( view->itemTextPos() == QIconView::Bottom ); + int dim; + if ( textOnBottom ) + dim = ( pixmap() ? pixmap() : unknown_icon)->width(); + else + dim = ( pixmap() ? pixmap() : unknown_icon)->height(); + if ( isSelected() ) { + QPixmap *pix = pixmap() ? pixmap() : unknown_icon; + if ( pix && !pix->isNull() ) { + QPixmap *buffer = get_qiv_buffer_pixmap( pix->size() ); + QBitmap mask = view->mask( pix ); + + QPainter p2( buffer ); + p2.fillRect( pix->rect(), white ); + p2.drawPixmap( 0, 0, *pix ); + p2.end(); + buffer->setMask( mask ); + p2.begin( buffer ); +#if defined(Q_WS_X11) + p2.fillRect( pix->rect(), QBrush( cg.highlight(), QBrush::Dense4Pattern) ); +#else // in WIN32 Dense4Pattern doesn't work correctly (transparency problem), so work around it + if ( iconView()->d->drawActiveSelection ) { + if ( !qiv_selection ) + createSelectionPixmap( cg ); + p2.drawTiledPixmap( 0, 0, pix->width(), pix->height(), + *qiv_selection ); + } +#endif + p2.end(); + QRect cr = pix->rect(); + if ( textOnBottom ) + p->drawPixmap( x() + ( width() - dim ) / 2, y(), *buffer, 0, 0, + cr.width(), cr.height() ); + else + p->drawPixmap( x() , y() + ( height() - dim ) / 2, *buffer, 0, 0, + cr.width(), cr.height() ); + } + } else { + if ( textOnBottom ) + p->drawPixmap( x() + ( width() - dim ) / 2, y(), + *( pixmap() ? pixmap() : unknown_icon ) ); + else + p->drawPixmap( x() , y() + ( height() - dim ) / 2, + *( pixmap() ? pixmap() : unknown_icon ) ); + } + + p->save(); + if ( isSelected() ) { + p->setBrush( QBrush( cg.highlight() ) ); + p->setPen( QPen( cg.highlight() ) ); + p->drawRoundRect( textRect( FALSE ), + 1000 / textRect( FALSE ).width(), + 1000 / textRect( FALSE ).height() ); + p->setPen( QPen( cg.highlightedText() ) ); + } else if ( view->d->itemTextBrush != NoBrush ) { + p->setBrush( view->d->itemTextBrush ); + p->setPen( QPen( view->d->itemTextBrush.color() ) ); + p->drawRoundRect( textRect( FALSE ), + 1000 / textRect( FALSE ).width(), + 1000 / textRect( FALSE ).height() ); + } + + int align = AlignHCenter; + if ( view->d->wordWrapIconText ) + align |= WordBreak | BreakAnywhere; + p->drawText( textRect( FALSE ), align, + view->d->wordWrapIconText ? itemText : tmpText ); + + p->restore(); + + p->restore(); +} + +/*! + Paints the focus rectangle of the item using the painter \a p and + the color group \a cg. + + The default implementation does nothing; subclasses may + reimplement this function. +*/ + +void QIconViewItem::paintFocus( QPainter *, const QColorGroup & ) +{ +} + +/*! + \fn void QIconViewItem::dropped( QDropEvent *e, const QValueList<QIconDragItem> &lst ) + + This function is called when something is dropped on the item. \a + e provides all the information about the drop. If the drag object + of the drop was a QIconDrag, \a lst contains the list of the + dropped items. You can get the data by calling + QIconDragItem::data() on each item. If the \a lst is empty, i.e. + the drag was not a QIconDrag, you must decode the data in \a e and + work with that. + + The default implementation does nothing; subclasses may + reimplement this function. +*/ + +#ifndef QT_NO_DRAGANDDROP +void QIconViewItem::dropped( QDropEvent *, const QValueList<QIconDragItem> & ) +{ +} +#endif + +/*! + This function is called when a drag enters the item's bounding + rectangle. + + The default implementation does nothing; subclasses may + reimplement this function. +*/ + +void QIconViewItem::dragEntered() +{ +} + +/*! + This function is called when a drag leaves the item's bounding + rectangle. + + The default implementation does nothing; subclasses may + reimplement this function. +*/ + +void QIconViewItem::dragLeft() +{ +} + +/*! + Sets the bounding rectangle of the whole item to \a r. This + function is provided for subclasses which reimplement calcRect(), + so that they can set the calculated rectangle. \e{Any other use is + discouraged.} + + \sa calcRect() textRect() setTextRect() pixmapRect() setPixmapRect() +*/ + +void QIconViewItem::setItemRect( const QRect &r ) +{ + itemRect = r; + checkRect(); + if ( view ) + view->updateItemContainer( this ); +} + +/*! + Sets the bounding rectangle of the item's text to \a r. This + function is provided for subclasses which reimplement calcRect(), + so that they can set the calculated rectangle. \e{Any other use is + discouraged.} + + \sa calcRect() textRect() setItemRect() setPixmapRect() +*/ + +void QIconViewItem::setTextRect( const QRect &r ) +{ + itemTextRect = r; + if ( view ) + view->updateItemContainer( this ); +} + +/*! + Sets the bounding rectangle of the item's icon to \a r. This + function is provided for subclasses which reimplement calcRect(), + so that they can set the calculated rectangle. \e{Any other use is + discouraged.} + + \sa calcRect() pixmapRect() setItemRect() setTextRect() +*/ + +void QIconViewItem::setPixmapRect( const QRect &r ) +{ + itemIconRect = r; + if ( view ) + view->updateItemContainer( this ); +} + +/*! + \internal +*/ + +void QIconViewItem::calcTmpText() +{ + if ( !view || view->d->wordWrapIconText || !wordWrapDirty ) + return; + wordWrapDirty = FALSE; + + int w = iconView()->maxItemWidth() - ( iconView()->itemTextPos() == QIconView::Bottom ? 0 : + pixmapRect().width() ); + if ( view->d->fm->width( itemText ) < w ) { + tmpText = itemText; + return; + } + + tmpText = "..."; + int i = 0; + while ( view->d->fm->width( tmpText + itemText[ i ] ) < w ) + tmpText += itemText[ i++ ]; + tmpText.remove( (uint)0, 3 ); + tmpText += "..."; +} + +/*! \internal */ + +QString QIconViewItem::tempText() const +{ + return tmpText; +} + +void QIconViewItem::checkRect() +{ + int x = itemRect.x(); + int y = itemRect.y(); + int w = itemRect.width(); + int h = itemRect.height(); + + bool changed = FALSE; + if ( x < 0 ) { + x = 0; + changed = TRUE; + } + if ( y < 0 ) { + y = 0; + changed = TRUE; + } + + if ( changed ) + itemRect.setRect( x, y, w, h ); +} + + +/*! \file iconview/simple_dd/main.h */ +/*! \file iconview/simple_dd/main.cpp */ + + +/*! + \class QIconView qiconview.h + \brief The QIconView class provides an area with movable labelled icons. + + \module iconview + \ingroup advanced + \mainclass + + A QIconView can display and manage a grid or other 2D layout of + labelled icons. Each labelled icon is a QIconViewItem. Items + (QIconViewItems) can be added or deleted at any time; items can be + moved within the QIconView. Single or multiple items can be + selected. Items can be renamed in-place. QIconView also supports + \link #draganddrop drag and drop\endlink. + + Each item contains a label string, a pixmap or picture (the icon + itself) and optionally a sort key. The sort key is used for + sorting the items and defaults to the label string. The label + string can be displayed below or to the right of the icon (see \l + ItemTextPos). + + The simplest way to create a QIconView is to create a QIconView + object and create some QIconViewItems with the QIconView as their + parent, set the icon view's geometry and show it. + For example: + \code + QIconView *iv = new QIconView( this ); + QDir dir( path, "*.xpm" ); + for ( uint i = 0; i < dir.count(); i++ ) { + (void) new QIconViewItem( iv, dir[i], QPixmap( path + dir[i] ) ); + } + iv->resize( 600, 400 ); + iv->show(); + \endcode + + The QIconViewItem call passes a pointer to the QIconView we wish to + populate, along with the label text and a QPixmap. + + When an item is inserted the QIconView allocates a position for it. + Existing items are rearranged if autoArrange() is TRUE. The + default arrangement is \c LeftToRight -- the QIconView fills + the \e top-most row from left to right, then moves one row \e down + and fills that row from left to right and so on. The + arrangement can be modified with any of the following approaches: + \list + \i Call setArrangement(), e.g. with \c TopToBottom which will fill up + the \e left-most column from top to bottom, then moves one column + \e right and fills that from top to bottom and so on. + + \i Construct each QIconViewItem using a constructor which allows + you to specify which item the new one is to follow. + \i Call setSorting() or sort() to sort the items. + \endlist + + The spacing between items is set with setSpacing(). Items can be + laid out using a fixed grid using setGridX() and setGridY(); by + default the QIconView calculates a grid dynamically. The position + of items' label text is set with setItemTextPos(). The text's + background can be set with setItemTextBackground(). The maximum + width of an item and of its text are set with setMaxItemWidth() + and setMaxItemTextLength(). The label text will be word-wrapped if + it is too long; this is controlled by setWordWrapIconText(). If + the label text is truncated, the user can still see the entire + text in a tool tip if they hover the mouse over the item. This is + controlled with setShowToolTips(). + + Items which are \link QIconViewItem::isSelectable() + selectable\endlink may be selected depending on the SelectionMode; + the default is \c Single. Because QIconView offers multiple + selection it must display keyboard focus and selection state + separately. Therefore there are functions to set the selection + state of an item (setSelected()) and to select which item displays + keyboard focus (setCurrentItem()). When multiple items may be + selected the icon view provides a rubberband, too. + + When in-place renaming is enabled (it is disabled by default), the + user may change the item's label. They do this by selecting the item + (single clicking it or navigating to it with the arrow keys), then + single clicking it (or pressing F2), and entering their text. If no + key has been set with QIconViewItem::setKey() the new text will also + serve as the key. (See QIconViewItem::setRenameEnabled().) + + You can control whether users can move items themselves with + setItemsMovable(). + + Because the internal structure used to store the icon view items is + linear, no iterator class is needed to iterate over all the items. + Instead we iterate by getting the first item from the \e{icon view} + and then each subsequent (\l QIconViewItem::nextItem()) from each + \e item in turn: + \code + for ( QIconViewItem *item = iv->firstItem(); item; item = item->nextItem() ) + do_something( item ); + \endcode + QIconView also provides currentItem(). You can search for an item + using findItem() (searching by position or for label text) and + with findFirstVisibleItem() and findLastVisibleItem(). The number + of items is returned by count(). An item can be removed from an + icon view using takeItem(); to delete an item use \c delete. All + the items can be deleted with clear(). + + The QIconView emits a wide range of useful signals, including + selectionChanged(), currentChanged(), clicked(), moved() and + itemRenamed(). + + \target draganddrop + \section1 Drag and Drop + + QIconView supports the drag and drop of items within the QIconView + itself. It also supports the drag and drop of items out of or into + the QIconView and drag and drop onto items themselves. The drag and + drop of items outside the QIconView can be achieved in a simple way + with basic functionality, or in a more sophisticated way which + provides more power and control. + + The simple approach to dragging items out of the icon view is to + subclass QIconView and reimplement QIconView::dragObject(). + + \code + QDragObject *MyIconView::dragObject() + { + return new QTextDrag( currentItem()->text(), this ); + } + \endcode + + In this example we create a QTextDrag object, (derived from + QDragObject), containing the item's label and return it as the drag + object. We could just as easily have created a QImageDrag from the + item's pixmap and returned that instead. + + QIconViews and their QIconViewItems can also be the targets of drag + and drops. To make the QIconView itself able to accept drops connect + to the dropped() signal. When a drop occurs this signal will be + emitted with a QDragEvent and a QValueList of QIconDragItems. To + make a QIconViewItem into a drop target subclass QIconViewItem and + reimplement QIconViewItem::acceptDrop() and + QIconViewItem::dropped(). + + \code + bool MyIconViewItem::acceptDrop( const QMimeSource *mime ) const + { + if ( mime->provides( "text/plain" ) ) + return TRUE; + return FALSE; + } + + void MyIconViewItem::dropped( QDropEvent *evt, const QValueList<QIconDragItem>& ) + { + QString label; + if ( QTextDrag::decode( evt, label ) ) + setText( label ); + } + \endcode + + See \l iconview/simple_dd/main.h and \l + iconview/simple_dd/main.cpp for a simple drag and drop example + which demonstrates drag and drop between a QIconView and a + QListBox. + + If you want to use extended drag-and-drop or have drag shapes drawn + you must take a more sophisticated approach. + + The first part is starting drags -- you should use a QIconDrag (or a + class derived from it) for the drag object. In dragObject() create the + drag object, populate it with QIconDragItems and return it. Normally + such a drag should offer each selected item's data. So in dragObject() + you should iterate over all the items, and create a QIconDragItem for + each selected item, and append these items with QIconDrag::append() to + the QIconDrag object. You can use QIconDragItem::setData() to set the + data of each item that should be dragged. If you want to offer the + data in additional mime-types, it's best to use a class derived from + QIconDrag, which implements additional encoding and decoding + functions. + + When a drag enters the icon view, there is little to do. Simply + connect to the dropped() signal and reimplement + QIconViewItem::acceptDrop() and QIconViewItem::dropped(). If you've + used a QIconDrag (or a subclass of it) the second argument to the + dropped signal contains a QValueList of QIconDragItems -- you can + access their data by calling QIconDragItem::data() on each one. + + For an example implementation of complex drag-and-drop look at the + fileiconview example (qt/examples/fileiconview). + + \sa QIconViewItem::setDragEnabled(), QIconViewItem::setDropEnabled(), + QIconViewItem::acceptDrop(), QIconViewItem::dropped(). + + <img src=qiconview-m.png> <img src=qiconview-w.png> +*/ + +/*! \enum QIconView::ResizeMode + + This enum type is used to tell QIconView how it should treat the + positions of its icons when the widget is resized. The modes are: + + \value Fixed The icons' positions are not changed. + \value Adjust The icons' positions are adjusted to be within the + new geometry, if possible. +*/ + +/*! + \enum QIconView::SelectionMode + + This enumerated type is used by QIconView to indicate how it + reacts to selection by the user. It has four values: + + \value Single When the user selects an item, any already-selected + item becomes unselected and the user cannot unselect the selected + item. This means that the user can never clear the selection. (The + application programmer can, using QIconView::clearSelection().) + + \value Multi When the user selects an item, e.g. by navigating + to it with the keyboard arrow keys or by clicking it, the + selection status of that item is toggled and the other items are + left alone. Also, multiple items can be selected by dragging the + mouse while the left mouse button stays pressed. + + \value Extended When the user selects an item the selection is + cleared and the new item selected. However, if the user presses + the Ctrl key when clicking on an item, the clicked item gets + toggled and all other items are left untouched. If the user + presses the Shift key while clicking on an item, all items between + the current item and the clicked item get selected or unselected, + depending on the state of the clicked item. Also, multiple items + can be selected by dragging the mouse while the left mouse button + stays pressed. + + \value NoSelection Items cannot be selected. + + To summarise: \c Single is a real single-selection icon view; \c + Multi a real multi-selection icon view; \c Extended is an icon + view in which users can select multiple items but usually want to + select either just one or a range of contiguous items; and \c + NoSelection mode is for an icon view where the user can look but + not touch. +*/ + +/*! + \enum QIconView::Arrangement + + This enum type determines in which direction the items flow when + the view runs out of space. + + \value LeftToRight Items which don't fit into the view cause the + viewport to extend vertically (you get a vertical scrollbar). + + \value TopToBottom Items which don't fit into the view cause the + viewport to extend horizontally (you get a horizontal scrollbar). +*/ + +/*! + \enum QIconView::ItemTextPos + + This enum type specifies the position of the item text in relation + to the icon. + + \value Bottom The text is drawn below the icon. + \value Right The text is drawn to the right of the icon. +*/ + +/*! + \fn void QIconView::dropped ( QDropEvent * e, const QValueList<QIconDragItem> &lst ) + + This signal is emitted when a drop event occurs in the viewport + (but not on any icon) which the icon view itself can't handle. + + \a e provides all the information about the drop. If the drag + object of the drop was a QIconDrag, \a lst contains the list of + the dropped items. You can get the data using + QIconDragItem::data() on each item. If the \a lst is empty, i.e. + the drag was not a QIconDrag, you have to decode the data in \a e + and work with that. + + Note QIconViewItems may be drop targets; if a drop event occurs on + an item the item handles the drop. +*/ + +/*! + \fn void QIconView::moved() + + This signal is emitted after successfully dropping one (or more) + items of the icon view. If the items should be removed, it's best + to do so in a slot connected to this signal. +*/ + +/*! + \fn void QIconView::doubleClicked(QIconViewItem * item) + + This signal is emitted when the user double-clicks on \a item. +*/ + +/*! + \fn void QIconView::returnPressed (QIconViewItem * item) + + This signal is emitted if the user presses the Return or Enter + key. \a item is the currentItem() at the time of the keypress. +*/ + +/*! + \fn void QIconView::selectionChanged() + + This signal is emitted when the selection has been changed. It's + emitted in each selection mode. +*/ + +/*! + \overload void QIconView::selectionChanged( QIconViewItem *item ) + + This signal is emitted when the selection changes. \a item is the + newly selected item. This signal is emitted only in single + selection mode. +*/ + +/*! + \fn void QIconView::currentChanged( QIconViewItem *item ) + + This signal is emitted when a new item becomes current. \a item is + the new current item (or 0 if no item is now current). + + \sa currentItem() +*/ + +/*! + \fn void QIconView::onItem( QIconViewItem *item ) + + This signal is emitted when the user moves the mouse cursor onto + an \a item, similar to the QWidget::enterEvent() function. +*/ + +// ### bug here - enter/leave event aren't considered. move the mouse +// out of the window and back in, to the same item. + +/*! + \fn void QIconView::onViewport() + + This signal is emitted when the user moves the mouse cursor from + an item to an empty part of the icon view. + + \sa onItem() +*/ + +/*! + \overload void QIconView::itemRenamed (QIconViewItem * item) + + This signal is emitted when \a item has been renamed, usually by + in-place renaming. + + \sa QIconViewItem::setRenameEnabled() QIconViewItem::rename() +*/ + +/*! + \fn void QIconView::itemRenamed (QIconViewItem * item, const QString &name) + + This signal is emitted when \a item has been renamed to \a name, + usually by in-place renaming. + + \sa QIconViewItem::setRenameEnabled() QIconViewItem::rename() +*/ + +/*! + \fn void QIconView::rightButtonClicked (QIconViewItem * item, const QPoint & pos) + + This signal is emitted when the user clicks the right mouse + button. If \a item is non-null, the cursor is on \a item. If \a + item is null, the mouse cursor isn't on any item. + + \a pos is the position of the mouse cursor in the global + coordinate system (QMouseEvent::globalPos()). (If the click's + press and release differ by a pixel or two, \a pos is the + position at release time.) + + \sa rightButtonPressed() mouseButtonClicked() clicked() +*/ + +/*! + \fn void QIconView::contextMenuRequested( QIconViewItem *item, const QPoint & pos ) + + This signal is emitted when the user invokes a context menu with + the right mouse button or with special system keys, with \a item + being the item under the mouse cursor or the current item, + respectively. + + \a pos is the position for the context menu in the global + coordinate system. +*/ + +/*! + \fn void QIconView::mouseButtonPressed (int button, QIconViewItem * item, const QPoint & pos) + + This signal is emitted when the user presses mouse button \a + button. If \a item is non-null, the cursor is on \a item. If \a + item is null, the mouse cursor isn't on any item. + + \a pos is the position of the mouse cursor in the global + coordinate system (QMouseEvent::globalPos()). + + \sa rightButtonClicked() mouseButtonPressed() pressed() +*/ + +/*! + \fn void QIconView::mouseButtonClicked (int button, QIconViewItem * item, const QPoint & pos ) + + This signal is emitted when the user clicks mouse button \a + button. If \a item is non-null, the cursor is on \a item. If \a + item is null, the mouse cursor isn't on any item. + + \a pos is the position of the mouse cursor in the global + coordinate system (QMouseEvent::globalPos()). (If the click's + press and release differ by a pixel or two, \a pos is the + position at release time.) + + \sa mouseButtonPressed() rightButtonClicked() clicked() +*/ + +/*! + \overload void QIconView::clicked ( QIconViewItem * item, const QPoint & pos ) + + This signal is emitted when the user clicks any mouse button on an + icon view item. \a item is a pointer to the item that has been + clicked. + + \a pos is the position of the mouse cursor in the global coordinate + system (QMouseEvent::globalPos()). (If the click's press and release + differ by a pixel or two, \a pos is the position at release time.) + + \sa mouseButtonClicked() rightButtonClicked() pressed() +*/ + +/*! + \overload void QIconView::pressed ( QIconViewItem * item, const QPoint & pos ) + + This signal is emitted when the user presses any mouse button. If + \a item is non-null, the cursor is on \a item. If \a item is null, + the mouse cursor isn't on any item. + + \a pos is the position of the mouse cursor in the global + coordinate system (QMouseEvent::globalPos()). (If the click's + press and release differ by a pixel or two, \a pos is the + position at release time.) + + \sa mouseButtonPressed() rightButtonPressed() clicked() +*/ + +/*! + \fn void QIconView::clicked ( QIconViewItem * item ) + + This signal is emitted when the user clicks any mouse button. If + \a item is non-null, the cursor is on \a item. If \a item is null, + the mouse cursor isn't on any item. + + \sa mouseButtonClicked() rightButtonClicked() pressed() +*/ + +/*! + \fn void QIconView::pressed ( QIconViewItem * item ) + + This signal is emitted when the user presses any mouse button. If + \a item is non-null, the cursor is on \a item. If \a item is null, + the mouse cursor isn't on any item. + + \sa mouseButtonPressed() rightButtonPressed() clicked() +*/ + +/*! + \fn void QIconView::rightButtonPressed( QIconViewItem * item, const QPoint & pos ) + + This signal is emitted when the user presses the right mouse + button. If \a item is non-null, the cursor is on \a item. If \a + item is null, the mouse cursor isn't on any item. + + \a pos is the position of the mouse cursor in the global + coordinate system (QMouseEvent::globalPos()). +*/ + +/*! + Constructs an empty icon view called \a name, with parent \a + parent and using the widget flags \a f. +*/ + +QIconView::QIconView( QWidget *parent, const char *name, WFlags f ) + : QScrollView( parent, name, WStaticContents | WNoAutoErase | f ) +{ + if ( !unknown_icon ) { + unknown_icon = new QPixmap( (const char **)unknown_xpm ); + qiv_cleanup_pixmap.add( &unknown_icon ); + } + + d = new QIconViewPrivate; + d->dragging = FALSE; + d->firstItem = 0; + d->lastItem = 0; + d->count = 0; + d->mousePressed = FALSE; + d->selectionMode = Single; + d->currentItem = 0; + d->highlightedItem = 0; + d->rubber = 0; + d->canStartRubber = FALSE; + d->backBuffer = 0; + d->scrollTimer = 0; + d->startDragItem = 0; + d->tmpCurrentItem = 0; + d->rastX = d->rastY = -1; + d->spacing = 5; + d->cleared = FALSE; + d->arrangement = LeftToRight; + d->resizeMode = Fixed; + d->dropped = FALSE; + d->adjustTimer = new QTimer( this, "iconview adjust timer" ); + d->isIconDrag = FALSE; + d->inMenuMode = FALSE; +#ifndef QT_NO_DRAGANDDROP + d->iconDragData.clear(); +#endif + d->numDragItems = 0; + d->updateTimer = new QTimer( this, "iconview update timer" ); + d->cachedW = d->cachedH = 0; + d->maxItemWidth = 100; + d->maxItemTextLength = 255; + d->inputTimer = new QTimer( this, "iconview input timer" ); + d->currInputString = QString::null; + d->dirty = FALSE; + d->rearrangeEnabled = TRUE; + d->itemTextPos = Bottom; + d->reorderItemsWhenInsert = TRUE; +#ifndef QT_NO_CURSOR + d->oldCursor = arrowCursor; +#endif + d->resortItemsWhenInsert = FALSE; + d->sortDirection = TRUE; + d->wordWrapIconText = TRUE; + d->cachedContentsX = d->cachedContentsY = -1; + d->clearing = FALSE; + d->fullRedrawTimer = new QTimer( this, "iconview full redraw timer" ); + d->itemTextBrush = NoBrush; + d->drawAllBack = TRUE; + d->fm = new QFontMetrics( font() ); + d->minLeftBearing = d->fm->minLeftBearing(); + d->minRightBearing = d->fm->minRightBearing(); + d->firstContainer = d->lastContainer = 0; + d->containerUpdateLocked = FALSE; + d->firstSizeHint = FALSE; + d->selectAnchor = 0; + d->renamingItem = 0; + d->drawActiveSelection = TRUE; + d->drawDragShapes = FALSE; + d->backrubber = 0; + + connect( d->adjustTimer, SIGNAL( timeout() ), + this, SLOT( adjustItems() ) ); + connect( d->updateTimer, SIGNAL( timeout() ), + this, SLOT( slotUpdate() ) ); + connect( d->fullRedrawTimer, SIGNAL( timeout() ), + this, SLOT( updateContents() ) ); + connect( this, SIGNAL( contentsMoving(int,int) ), + this, SLOT( movedContents(int,int) ) ); + + setAcceptDrops( TRUE ); + viewport()->setAcceptDrops( TRUE ); + + setMouseTracking( TRUE ); + viewport()->setMouseTracking( TRUE ); + + viewport()->setBackgroundMode( PaletteBase); + setBackgroundMode( PaletteBackground, PaletteBase ); + viewport()->setFocusProxy( this ); + viewport()->setFocusPolicy( QWidget::WheelFocus ); + +#ifndef QT_NO_TOOLTIP + d->toolTip = new QIconViewToolTip( viewport(), this ); +#endif + d->showTips = TRUE; +} + +/*! + \reimp +*/ + +void QIconView::styleChange( QStyle& old ) +{ + QScrollView::styleChange( old ); + *d->fm = QFontMetrics( font() ); + d->minLeftBearing = d->fm->minLeftBearing(); + d->minRightBearing = d->fm->minRightBearing(); + + QIconViewItem *item = d->firstItem; + for ( ; item; item = item->next ) { + item->wordWrapDirty = TRUE; + item->calcRect(); + } + +#if !defined(Q_WS_X11) + delete qiv_selection; + qiv_selection = 0; +#endif +} + +/*! + \reimp +*/ + +void QIconView::setFont( const QFont & f ) +{ + QScrollView::setFont( f ); + *d->fm = QFontMetrics( font() ); + d->minLeftBearing = d->fm->minLeftBearing(); + d->minRightBearing = d->fm->minRightBearing(); + + QIconViewItem *item = d->firstItem; + for ( ; item; item = item->next ) { + item->wordWrapDirty = TRUE; + item->calcRect(); + } +} + +/*! + \reimp +*/ + +void QIconView::setPalette( const QPalette & p ) +{ + QScrollView::setPalette( p ); + *d->fm = QFontMetrics( font() ); + d->minLeftBearing = d->fm->minLeftBearing(); + d->minRightBearing = d->fm->minRightBearing(); + + QIconViewItem *item = d->firstItem; + for ( ; item; item = item->next ) { + item->wordWrapDirty = TRUE; + item->calcRect(); + } +} + +/*! + Destroys the icon view and deletes all items. +*/ + +QIconView::~QIconView() +{ + QIconViewItem *tmp, *item = d->firstItem; + d->clearing = TRUE; + QIconViewPrivate::ItemContainer *c = d->firstContainer, *tmpc; + while ( c ) { + tmpc = c->n; + delete c; + c = tmpc; + } + while ( item ) { + tmp = item->next; + delete item; + item = tmp; + } + delete d->backBuffer; + d->backBuffer = 0; + delete d->fm; + d->fm = 0; +#ifndef QT_NO_TOOLTIP + delete d->toolTip; + d->toolTip = 0; +#endif + delete d; + d = NULL; +} + +/*! + Inserts the icon view item \a item after \a after. If \a after is + 0, \a item is appended after the last item. + + \e{You should never need to call this function.} Instead create + QIconViewItem's and associate them with your icon view like this: + + \code + (void) new QIconViewItem( myIconview, "The text of the item", aPixmap ); + \endcode +*/ + +void QIconView::insertItem( QIconViewItem *item, QIconViewItem *after ) +{ + if ( !item ) + return; + + if ( d->firstItem == item || item->prev || item->next) + return; + + if ( !item->view ) + item->view = this; + + if ( !d->firstItem ) { + d->firstItem = d->lastItem = item; + item->prev = 0; + item->next = 0; + } else { + if ( !after || after == d->lastItem ) { + d->lastItem->next = item; + item->prev = d->lastItem; + item->next = 0; + d->lastItem = item; + } else { + QIconViewItem *i = d->firstItem; + while ( i != after ) + i = i->next; + + if ( i ) { + QIconViewItem *next = i->next; + item->next = next; + item->prev = i; + i->next = item; + next->prev = item; + } + } + } + + if ( isVisible() ) { + if ( d->reorderItemsWhenInsert ) { + if ( d->updateTimer->isActive() ) + d->updateTimer->stop(); + d->fullRedrawTimer->stop(); + // #### uncomment this ASA insertInGrid uses cached values and is efficient + //insertInGrid( item ); + + d->cachedW = QMAX( d->cachedW, item->x() + item->width() ); + d->cachedH = QMAX( d->cachedH, item->y() + item->height() ); + + d->updateTimer->start( 0, TRUE ); + } else { + insertInGrid( item ); + + viewport()->update(item->x() - contentsX(), + item->y() - contentsY(), + item->width(), item->height()); + } + } else if ( !autoArrange() ) { + item->dirty = FALSE; + } + + d->count++; + d->dirty = TRUE; +} + +/*! + This slot is used for a slightly-delayed update. + + The icon view is not redrawn immediately after inserting a new item + but after a very small delay using a QTimer. This means that when + many items are inserted in a loop the icon view is probably redrawn + only once at the end of the loop. This makes the insertions both + flicker-free and faster. +*/ + +void QIconView::slotUpdate() +{ + d->updateTimer->stop(); + d->fullRedrawTimer->stop(); + + if ( !d->firstItem || !d->lastItem ) + return; + + // #### remove that ASA insertInGrid uses cached values and is efficient + if ( d->resortItemsWhenInsert ) + sort( d->sortDirection ); + else { + int y = d->spacing; + QIconViewItem *item = d->firstItem; + int w = 0, h = 0; + while ( item ) { + bool changed; + QIconViewItem *next = makeRowLayout( item, y, changed ); + if ( !next || !next->next ) + break; + + if( !QApplication::reverseLayout() ) + item = next; + w = QMAX( w, item->x() + item->width() ); + h = QMAX( h, item->y() + item->height() ); + item = next; + if ( d->arrangement == LeftToRight ) + h = QMAX( h, y ); + + item = item->next; + } + + if ( d->lastItem && d->arrangement == TopToBottom ) { + item = d->lastItem; + int x = item->x(); + while ( item && item->x() >= x ) { + w = QMAX( w, item->x() + item->width() ); + h = QMAX( h, item->y() + item->height() ); + item = item->prev; + } + } + + w = QMAX( QMAX( d->cachedW, w ), d->lastItem->x() + d->lastItem->width() ); + h = QMAX( QMAX( d->cachedH, h ), d->lastItem->y() + d->lastItem->height() ); + + if ( d->arrangement == TopToBottom ) + w += d->spacing; + else + h += d->spacing; + viewport()->setUpdatesEnabled( FALSE ); + resizeContents( w, h ); + viewport()->setUpdatesEnabled( TRUE ); + viewport()->repaint( FALSE ); + } + + int cx = d->cachedContentsX == -1 ? contentsX() : d->cachedContentsX; + int cy = d->cachedContentsY == -1 ? contentsY() : d->cachedContentsY; + + if ( cx != contentsX() || cy != contentsY() ) + setContentsPos( cx, cy ); + + d->cachedContentsX = d->cachedContentsY = -1; + d->cachedW = d->cachedH = 0; +} + +/*! + Takes the icon view item \a item out of the icon view and causes + an update of the screen display. The item is not deleted. You + should normally not need to call this function because + QIconViewItem::~QIconViewItem() calls it. The normal way to delete + an item is to delete it. +*/ + +void QIconView::takeItem( QIconViewItem *item ) +{ + if ( !item ) + return; + + if ( item->d->container1 ) + item->d->container1->items.removeRef( item ); + if ( item->d->container2 ) + item->d->container2->items.removeRef( item ); + item->d->container2 = 0; + item->d->container1 = 0; + + bool block = signalsBlocked(); + blockSignals( d->clearing ); + + QRect r = item->rect(); + + if ( d->currentItem == item ) { + if ( item->prev ) { + d->currentItem = item->prev; + emit currentChanged( d->currentItem ); + repaintItem( d->currentItem ); + } else if ( item->next ) { + d->currentItem = item->next; + emit currentChanged( d->currentItem ); + repaintItem( d->currentItem ); + } else { + d->currentItem = 0; + emit currentChanged( d->currentItem ); + } + } + if ( item->isSelected() ) { + item->selected = FALSE; + emit selectionChanged(); + } + + if ( item == d->firstItem ) { + d->firstItem = d->firstItem->next; + if ( d->firstItem ) + d->firstItem->prev = 0; + } else if ( item == d->lastItem ) { + d->lastItem = d->lastItem->prev; + if ( d->lastItem ) + d->lastItem->next = 0; + } else { + QIconViewItem *i = item; + if ( i ) { + if ( i->prev ) + i->prev->next = i->next; + if ( i->next ) + i->next->prev = i->prev; + } + } + + if ( d->selectAnchor == item ) + d->selectAnchor = d->currentItem; + + if ( !d->clearing ) + repaintContents( r.x(), r.y(), r.width(), r.height(), TRUE ); + + item->view = 0; + item->prev = 0; + item->next = 0; + d->count--; + + blockSignals( block ); +} + +/*! + Returns the index of \a item, or -1 if \a item doesn't exist in + this icon view. +*/ + +int QIconView::index( const QIconViewItem *item ) const +{ + if ( !item ) + return -1; + + if ( item == d->firstItem ) + return 0; + else if ( item == d->lastItem ) + return d->count - 1; + else { + QIconViewItem *i = d->firstItem; + int j = 0; + while ( i && i != item ) { + i = i->next; + ++j; + } + + return i ? j : -1; + } +} + +/*! + Returns a pointer to the first item of the icon view, or 0 if + there are no items in the icon view. + + \sa lastItem() currentItem() +*/ + +QIconViewItem *QIconView::firstItem() const +{ + if (d) { + return d->firstItem; + } + else { + return NULL; + } +} + +/*! + Returns a pointer to the last item of the icon view, or 0 if there + are no items in the icon view. + + \sa firstItem() currentItem() +*/ + +QIconViewItem *QIconView::lastItem() const +{ + if (d) { + return d->lastItem; + } + else { + return NULL; + } +} + +/*! + Returns a pointer to the current item of the icon view, or 0 if no + item is current. + + \sa setCurrentItem() firstItem() lastItem() +*/ + +QIconViewItem *QIconView::currentItem() const +{ + if (d) { + return d->currentItem; + } + else { + return NULL; + } +} + +/*! + Makes \a item the new current item of the icon view. +*/ + +void QIconView::setCurrentItem( QIconViewItem *item ) +{ + if ( !item || item == d->currentItem ) + return; + + setMicroFocusHint( item->x(), item->y(), item->width(), item->height(), FALSE ); + + QIconViewItem *old = d->currentItem; + d->currentItem = item; + emit currentChanged( d->currentItem ); + if ( d->selectionMode == Single ) { + bool changed = FALSE; + if ( old && old->selected ) { + old->selected = FALSE; + changed = TRUE; + } + if ( item && !item->selected && item->isSelectable() && d->selectionMode != NoSelection ) { + item->selected = TRUE; + changed = TRUE; + emit selectionChanged( item ); + } + if ( changed ) + emit selectionChanged(); + } + + if ( old ) + repaintItem( old ); + repaintItem( d->currentItem ); +} + +/*! + Selects or unselects \a item depending on \a s, and may also + unselect other items, depending on QIconView::selectionMode() and + \a cb. + + If \a s is FALSE, \a item is unselected. + + If \a s is TRUE and QIconView::selectionMode() is \c Single, \a + item is selected, and the item which was selected is unselected. + + If \a s is TRUE and QIconView::selectionMode() is \c Extended, \a + item is selected. If \a cb is TRUE, the selection state of the + icon view's other items is left unchanged. If \a cb is FALSE (the + default) all other items are unselected. + + If \a s is TRUE and QIconView::selectionMode() is \c Multi \a item + is selected. + + Note that \a cb is used only if QIconView::selectionMode() is \c + Extended. \a cb defaults to FALSE. + + All items whose selection status is changed repaint themselves. +*/ + +void QIconView::setSelected( QIconViewItem *item, bool s, bool cb ) +{ + if ( !item ) + return; + item->setSelected( s, cb ); +} + +/*! + \property QIconView::count + \brief the number of items in the icon view +*/ + +uint QIconView::count() const +{ + return d->count; +} + +/*! + Performs autoscrolling when selecting multiple icons with the + rubber band. +*/ + +void QIconView::doAutoScroll() +{ + QRect oldRubber = *d->rubber; + + QPoint vp = viewport()->mapFromGlobal( QCursor::pos() ); + QPoint pos = viewportToContents( vp ); + + if ( pos == d->rubber->bottomRight() ) + return; + + d->rubber->setRight( pos.x() ); + d->rubber->setBottom( pos.y() ); + + int minx = contentsWidth(), miny = contentsHeight(); + int maxx = 0, maxy = 0; + bool changed = FALSE; + bool block = signalsBlocked(); + + QRect rr; + + blockSignals( TRUE ); + viewport()->setUpdatesEnabled( FALSE ); + bool alreadyIntersected = FALSE; + QRect nr = d->rubber->normalize(); + QRect rubberUnion = nr.unite( oldRubber.normalize() ); + QIconViewPrivate::ItemContainer *c = d->firstContainer; + for ( ; c; c = c->n ) { + if ( c->rect.intersects( rubberUnion ) ) { + alreadyIntersected = TRUE; + QIconViewItem *item = c->items.first(); + for ( ; item; item = c->items.next() ) { + if ( d->selectedItems.find( item ) ) + continue; + if ( !item->intersects( nr ) ) { + if ( item->isSelected() ) { + item->setSelected( FALSE ); + changed = TRUE; + rr = rr.unite( item->rect() ); + } + } else if ( item->intersects( nr ) ) { + if ( !item->isSelected() && item->isSelectable() ) { + item->setSelected( TRUE, TRUE ); + changed = TRUE; + rr = rr.unite( item->rect() ); + } + + minx = QMIN( minx, item->x() - 1 ); + miny = QMIN( miny, item->y() - 1 ); + maxx = QMAX( maxx, item->x() + item->width() + 1 ); + maxy = QMAX( maxy, item->y() + item->height() + 1 ); + } + } + } else { + if ( alreadyIntersected ) + break; + } + } + viewport()->setUpdatesEnabled( TRUE ); + blockSignals( block ); + + // static bool drawAll; + if ( d->backrubber == 0 ) { + d->backrubber = new QPixmap( viewport()->rect().size() ); + d->backrubber->fill( viewport(), viewport()->rect().topLeft() ); + // drawAll = true; + } + + // int oldX = 0, oldY = 0; + // if ( !drawAll && d->scrollTimer ) { + // oldX = contentsX(); + // oldY = contentsY(); + // } + ensureVisible( pos.x(), pos.y() ); + // if ( !drawAll && d->scrollTimer && ( oldX != contentsX() || oldY != contentsY() ) ) + // drawAll = true; + + QRect allRect = oldRubber.normalize(); + if ( changed ) + allRect |= rr.normalize(); + allRect |= d->rubber->normalize(); + QPoint point = contentsToViewport( allRect.topLeft() ); + allRect = QRect( point.x(), point.y(), allRect.width(), allRect.height() ); + allRect &= viewport()->rect(); + + d->dragging = FALSE; + + QPainter p( d->backrubber ); + p.translate( -contentsX(), -contentsY() ); +#if 0 + if ( !drawAll ) { + oldRubber = oldRubber.normalize(); + point = contentsToViewport( oldRubber.topLeft() ); + oldRubber = QRect( point.x(), point.y(), oldRubber.width(), oldRubber.height() ); + oldRubber &= viewport()->rect(); + + point = contentsToViewport( nr.topLeft() ); + nr = QRect( point.x(), point.y(), nr.width(), nr.height() ); + nr &= viewport()->rect(); + + QRegion region; + if ( allRect != nr ) + region = QRegion(allRect).subtract( QRegion( nr ) ); + if ( allRect != oldRubber ) + region += QRegion(allRect).subtract( QRegion( oldRubber ) ); + + QMemArray< QRect > ar = region.rects(); + for ( uint i = 0; i < ar.size(); ++i ) { + ar[i].addCoords( -2, -2, 4, 4 ); + ar[i] = ar[i].normalize(); + + p.setClipRect( ar[i] ); + drawContents( &p, contentsX() + ar[i].left(), contentsY() + ar[i].top(), ar[i].width(), ar[i].height() ); + } + } + else +#endif + { + drawContents( &p, + contentsX() + allRect.left(), contentsY() + allRect.top(), + allRect.width(), allRect.height() ); + } + + p.end(); + // drawAll = false; + d->dragging = TRUE; + bitBlt( viewport(), allRect.topLeft(), d->backrubber, allRect ); + + if ( changed ) { + emit selectionChanged(); + if ( d->selectionMode == Single ) + emit selectionChanged( d->currentItem ); + } + + if ( !QRect( 50, 50, viewport()->width()-100, viewport()->height()-100 ).contains( vp ) && + !d->scrollTimer ) { + d->scrollTimer = new QTimer( this ); + + connect( d->scrollTimer, SIGNAL( timeout() ), + this, SLOT( doAutoScroll() ) ); + d->scrollTimer->start( 100, FALSE ); + } else if ( QRect( 50, 50, viewport()->width()-100, viewport()->height()-100 ).contains( vp ) && + d->scrollTimer ) { + disconnect( d->scrollTimer, SIGNAL( timeout() ), + this, SLOT( doAutoScroll() ) ); + d->scrollTimer->stop(); + delete d->scrollTimer; + d->scrollTimer = 0; + } + +} + +/*! + \reimp +*/ + +void QIconView::drawContents( QPainter *p, int cx, int cy, int cw, int ch ) +{ + p->save(); + QRect r = QRect( cx, cy, cw, ch ); + + QIconViewPrivate::ItemContainer *c = d->firstContainer; + QRegion remaining( QRect( cx, cy, cw, ch ) ); + bool alreadyIntersected = FALSE; + while ( c ) { + if ( c->rect.intersects( r ) ) { + p->save(); + p->resetXForm(); + QRect r2 = c->rect; + r2 = r2.intersect( r ); + QRect r3( contentsToViewport( QPoint( r2.x(), r2.y() ) ), QSize( r2.width(), r2.height() ) ); + if ( d->drawAllBack ) { + p->setClipRect( r3 ); + } else { + QRegion reg = d->clipRegion.intersect( r3 ); + p->setClipRegion( reg ); + } + drawBackground( p, r3 ); + remaining = remaining.subtract( r3 ); + p->restore(); + + QColorGroup cg; + d->drawActiveSelection = hasFocus() || d->inMenuMode + || !style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this ); + + if ( !d->drawActiveSelection ) + cg = palette().inactive(); + else + cg = colorGroup(); + + QIconViewItem *item = c->items.first(); + // clip items to the container rect by default... this + // prevents icons with alpha channels from being painted + // twice when they are in 2 containers + // + // NOTE: the item could override this cliprect in it's + // paintItem() implementation, which makes this useless + p->setClipRect( QRect( contentsToViewport( r2.topLeft() ), r2.size() ) ); + for ( ; item; item = c->items.next() ) { + if ( item->rect().intersects( r ) && !item->dirty ) { + p->save(); + p->setFont( font() ); + item->paintItem( p, cg ); + p->restore(); + } + } + alreadyIntersected = TRUE; + } else { + if ( alreadyIntersected ) + break; + } + c = c->n; + } + + if ( !remaining.isNull() && !remaining.isEmpty() ) { + p->save(); + p->resetXForm(); + if ( d->drawAllBack ) { + p->setClipRegion( remaining ); + } else { + remaining = d->clipRegion.intersect( remaining ); + p->setClipRegion( remaining ); + } + drawBackground( p, remaining.boundingRect() ); + p->restore(); + } + + if ( ( hasFocus() || viewport()->hasFocus() ) && d->currentItem && + d->currentItem->rect().intersects( r ) ) { + d->currentItem->paintFocus( p, colorGroup() ); + } + + p->restore(); + if ( d->rubber ) { + p->save(); + p->translate( contentsX(), contentsY() ); + p->setRasterOp( NotROP ); + p->setPen( QPen( color0, 1 ) ); + p->setBrush( NoBrush ); + drawRubber( p ); + p->restore(); + } +} + +/*! + \overload + + Arranges all the items in the grid given by gridX() and gridY(). + + Even if sorting() is enabled, the items are not sorted by this + function. If you want to sort or rearrange the items, use + iconview->sort(iconview->sortDirection()). + + If \a update is TRUE (the default), the viewport is repainted as + well. + + \sa QIconView::setGridX(), QIconView::setGridY(), QIconView::sort() +*/ + +void QIconView::arrangeItemsInGrid( bool update ) +{ + if ( !d->firstItem || !d->lastItem ) + return; + + d->containerUpdateLocked = TRUE; + + int w = 0, h = 0, y = d->spacing; + + QIconViewItem *item = d->firstItem; + while (item && (item->isVisible() == FALSE)) { + item = item->next; + } + bool changedLayout = FALSE; + while ( item ) { + bool changed; + QIconViewItem *next = makeRowLayout( item, y, changed ); + changedLayout = changed || changedLayout; + if( !QApplication::reverseLayout() ) + item = next; + w = QMAX( w, item->x() + item->width() ); + h = QMAX( h, item->y() + item->height() ); + item = next; + if ( d->arrangement == LeftToRight ) + h = QMAX( h, y ); + + if ( !item || !item->next ) + break; + + item = item->next; + while (item && (item->isVisible() == FALSE)) { + item = item->next; + } + } + + if ( d->lastItem && d->arrangement == TopToBottom ) { + item = d->lastItem; + while (item && (item->isVisible() == FALSE)) { + item = item->prev; + } + int x = 0; + if (item) + x = item->x(); + while ( item && item->x() >= x ) { + w = QMAX( w, item->x() + item->width() ); + h = QMAX( h, item->y() + item->height() ); + item = item->prev; + while (item && (item->isVisible() == FALSE)) { + item = item->prev; + } + } + } + d->containerUpdateLocked = FALSE; + + QIconViewItem *lastVisibleItem = d->lastItem; + while (lastVisibleItem->prev && (lastVisibleItem->isVisible() == FALSE)) { + lastVisibleItem = lastVisibleItem->prev; + } + + w = QMAX( QMAX( d->cachedW, w ), lastVisibleItem->x() + lastVisibleItem->width() ); + h = QMAX( QMAX( d->cachedH, h ), lastVisibleItem->y() + lastVisibleItem->height() ); + + if ( d->arrangement == TopToBottom ) + w += d->spacing; + else + h += d->spacing; + + bool ue = isUpdatesEnabled(); + viewport()->setUpdatesEnabled( FALSE ); + int vw = visibleWidth(); + int vh = visibleHeight(); + resizeContents( w, h ); + bool doAgain = FALSE; + if ( d->arrangement == LeftToRight ) + doAgain = visibleWidth() != vw; + if ( d->arrangement == TopToBottom ) + doAgain = visibleHeight() != vh; + if ( doAgain ) // in the case that the visibleExtend changed because of the resizeContents (scrollbar show/hide), redo layout again + arrangeItemsInGrid( FALSE ); + viewport()->setUpdatesEnabled( ue ); + d->dirty = !isVisible(); + rebuildContainers(); + if ( update && ( !optimize_layout || changedLayout ) ) + repaintContents( contentsX(), contentsY(), viewport()->width(), viewport()->height(), FALSE ); +} + +/*! + This variant uses \a grid instead of (gridX(), gridY()). If \a + grid is invalid (see QSize::isValid()), arrangeItemsInGrid() + calculates a valid grid itself and uses that. + + If \a update is TRUE (the default) the viewport is repainted. +*/ + +void QIconView::arrangeItemsInGrid( const QSize &grid, bool update ) +{ + d->containerUpdateLocked = TRUE; + QSize grid_( grid ); + if ( !grid_.isValid() ) { + int w = 0, h = 0; + QIconViewItem *item = d->firstItem; + for ( ; item; item = item->next ) { + w = QMAX( w, item->width() ); + h = QMAX( h, item->height() ); + } + + grid_ = QSize( QMAX( d->rastX + d->spacing, w ), + QMAX( d->rastY + d->spacing, h ) ); + } + + int w = 0, h = 0; + QIconViewItem *item = d->firstItem; + for ( ; item; item = item->next ) { + int nx = item->x() / grid_.width(); + int ny = item->y() / grid_.height(); + item->move( nx * grid_.width(), + ny * grid_.height() ); + w = QMAX( w, item->x() + item->width() ); + h = QMAX( h, item->y() + item->height() ); + item->dirty = FALSE; + } + d->containerUpdateLocked = FALSE; + + resizeContents( w, h ); + rebuildContainers(); + if ( update ) + repaintContents( contentsX(), contentsY(), viewport()->width(), viewport()->height(), FALSE ); +} + +/*! + \reimp +*/ + +void QIconView::setContentsPos( int x, int y ) +{ + if ( d->updateTimer->isActive() ) { + d->cachedContentsX = x; + d->cachedContentsY = y; + } else { + d->cachedContentsY = d->cachedContentsX = -1; + QScrollView::setContentsPos( x, y ); + } +} + +/*! + \reimp +*/ + +void QIconView::showEvent( QShowEvent * ) +{ + if ( d->dirty ) { + resizeContents( QMAX( contentsWidth(), viewport()->width() ), + QMAX( contentsHeight(), viewport()->height() ) ); + if ( d->resortItemsWhenInsert ) + sort( d->sortDirection ); + if ( autoArrange() ) + arrangeItemsInGrid( FALSE ); + } + QScrollView::show(); +} + +/*! + \property QIconView::selectionMode + \brief the selection mode of the icon view + + This can be \c Single (the default), \c Extended, \c Multi or \c + NoSelection. +*/ + +void QIconView::setSelectionMode( SelectionMode m ) +{ + d->selectionMode = m; +} + +QIconView::SelectionMode QIconView::selectionMode() const +{ + return d->selectionMode; +} + +/*! + Returns a pointer to the item that contains point \a pos, which is + given in contents coordinates, or 0 if no item contains point \a + pos. +*/ + +QIconViewItem *QIconView::findItem( const QPoint &pos ) const +{ + if ( !d->firstItem ) + return 0; + + QIconViewPrivate::ItemContainer *c = d->lastContainer; + for ( ; c; c = c->p ) { + if ( c->rect.contains( pos ) ) { + QIconViewItem *item = c->items.last(); + for ( ; item; item = c->items.prev() ) + if ( item->contains( pos ) ) + return item; + } + } + + return 0; +} + +/*! + \overload + + Returns a pointer to the first item whose text begins with \a + text, or 0 if no such item could be found. Use the \a compare flag + to control the comparison behaviour. (See \l + {Qt::StringComparisonMode}.) +*/ + +QIconViewItem *QIconView::findItem( const QString &text, ComparisonFlags compare ) const +{ + if ( !d->firstItem ) + return 0; + + if ( compare == CaseSensitive || compare == 0 ) + compare |= ExactMatch; + + QString itmtxt; + QString comtxt = text; + if ( ! (compare & CaseSensitive) ) + comtxt = text.lower(); + + QIconViewItem *item; + if ( d->currentItem ) + item = d->currentItem; + else + item = d->firstItem; + + QIconViewItem *beginsWithItem = 0; + QIconViewItem *endsWithItem = 0; + QIconViewItem *containsItem = 0; + + if ( item ) { + for ( ; item; item = item->next ) { + if ( ! (compare & CaseSensitive) ) + itmtxt = item->text().lower(); + else + itmtxt = item->text(); + + if ( compare & ExactMatch && itmtxt == comtxt ) + return item; + if ( compare & BeginsWith && !beginsWithItem && itmtxt.startsWith( comtxt ) ) + beginsWithItem = containsItem = item; + if ( compare & EndsWith && !endsWithItem && itmtxt.endsWith( comtxt ) ) + endsWithItem = containsItem = item; + if ( compare & Contains && !containsItem && itmtxt.contains( comtxt ) ) + containsItem = item; + } + + if ( d->currentItem && d->firstItem ) { + item = d->firstItem; + for ( ; item && item != d->currentItem; item = item->next ) { + if ( ! (compare & CaseSensitive) ) + itmtxt = item->text().lower(); + else + itmtxt = item->text(); + + if ( compare & ExactMatch && itmtxt == comtxt ) + return item; + if ( compare & BeginsWith && !beginsWithItem && itmtxt.startsWith( comtxt ) ) + beginsWithItem = containsItem = item; + if ( compare & EndsWith && !endsWithItem && itmtxt.endsWith( comtxt ) ) + endsWithItem = containsItem = item; + if ( compare & Contains && !containsItem && itmtxt.contains( comtxt ) ) + containsItem = item; + } + } + } + + // Obey the priorities + if ( beginsWithItem ) + return beginsWithItem; + else if ( endsWithItem ) + return endsWithItem; + else if ( containsItem ) + return containsItem; + return 0; +} + +/*! + Unselects all the items. +*/ + +void QIconView::clearSelection() +{ + selectAll( FALSE ); +} + +/*! + In Multi and Extended modes, this function sets all items to be + selected if \a select is TRUE, and to be unselected if \a select + is FALSE. + + In Single and NoSelection modes, this function only changes the + selection status of currentItem(). +*/ + +void QIconView::selectAll( bool select ) +{ + if ( d->selectionMode == NoSelection ) + return; + + if ( d->selectionMode == Single ) { + if ( d->currentItem ) + d->currentItem->setSelected( select ); + return; + } + + bool b = signalsBlocked(); + blockSignals( TRUE ); + QIconViewItem *item = d->firstItem; + QIconViewItem *i = d->currentItem; + bool changed = FALSE; + bool ue = viewport()->isUpdatesEnabled(); + viewport()->setUpdatesEnabled( FALSE ); + QRect rr; + for ( ; item; item = item->next ) { + if (item->isVisible()) { + if ( select != item->isSelected() ) { + item->setSelected( select, TRUE ); + rr = rr.unite( item->rect() ); + changed = TRUE; + } + else { + if ( FALSE != item->isSelected() ) { + item->setSelected( FALSE, TRUE ); + changed = TRUE; + } + } + } + } + viewport()->setUpdatesEnabled( ue ); + // we call updateContents not repaintContents because of possible previous updateContents + QScrollView::updateContents( rr ); + QApplication::sendPostedEvents( viewport(), QEvent::Paint ); + if ( i ) + setCurrentItem( i ); + blockSignals( b ); + if ( changed ) { + emit selectionChanged(); + } +} + +/*! + Inverts the selection. Works only in Multi and Extended selection + mode. +*/ + +void QIconView::invertSelection() +{ + if ( d->selectionMode == Single || + d->selectionMode == NoSelection ) + return; + + bool b = signalsBlocked(); + blockSignals( TRUE ); + QIconViewItem *item = d->firstItem; + for ( ; item; item = item->next ) + item->setSelected( !item->isSelected(), TRUE ); + blockSignals( b ); + emit selectionChanged(); +} + +/*! + Repaints the \a item. +*/ + +void QIconView::repaintItem( QIconViewItem *item ) +{ + if ( !item || item->dirty ) + return; + + if ( QRect( contentsX(), contentsY(), visibleWidth(), visibleHeight() ). + intersects( QRect( item->x() - 1, item->y() - 1, item->width() + 2, item->height() + 2 ) ) ) + repaintContents( item->x() - 1, item->y() - 1, item->width() + 2, item->height() + 2, FALSE ); +} + +/*! + Repaints the selected items. +*/ +void QIconView::repaintSelectedItems() +{ + if ( selectionMode() == NoSelection ) + return; + + if ( selectionMode() == Single ) { + if ( !currentItem() || !currentItem()->isSelected() ) + return; + QRect itemRect = currentItem()->rect(); //rect in contents coordinates + itemRect.moveBy( -contentsX(), -contentsY() ); + viewport()->update( itemRect ); + } else { + // check if any selected items are visible + QIconViewItem *item = firstItem(); + const QRect vr = QRect( contentsX(), contentsY(), visibleWidth(), visibleHeight() ); + + while ( item ) { + if ( item->isSelected() && item->rect().intersects( vr ) ) + repaintItem( item ); + item = item->nextItem(); + } + } +} + +/*! + Makes sure that \a item is entirely visible. If necessary, + ensureItemVisible() scrolls the icon view. + + \sa ensureVisible() +*/ + +void QIconView::ensureItemVisible( QIconViewItem *item ) +{ + if ( !item ) + return; + + if ( (d->updateTimer && d->updateTimer->isActive()) || + (d->fullRedrawTimer && d->fullRedrawTimer->isActive()) ) + slotUpdate(); + + int w = item->width(); + int h = item->height(); + ensureVisible( item->x() + w / 2, item->y() + h / 2, + w / 2 + 1, h / 2 + 1 ); +} + +/*! + Finds the first item whose bounding rectangle overlaps \a r and + returns a pointer to that item. \a r is given in content + coordinates. Returns 0 if no item overlaps \a r. + + If you want to find all items that touch \a r, you will need to + use this function and nextItem() in a loop ending at + findLastVisibleItem() and test QIconViewItem::rect() for each of + these items. + + \sa findLastVisibleItem() QIconViewItem::rect() +*/ + +QIconViewItem* QIconView::findFirstVisibleItem( const QRect &r ) const +{ + QIconViewPrivate::ItemContainer *c = d->firstContainer; + QIconViewItem *i = 0; + bool alreadyIntersected = FALSE; + for ( ; c; c = c->n ) { + if ( c->rect.intersects( r ) ) { + alreadyIntersected = TRUE; + QIconViewItem *item = c->items.first(); + for ( ; item; item = c->items.next() ) { + if ( r.intersects( item->rect() ) ) { + if ( !i ) { + i = item; + } else { + QRect r2 = item->rect(); + QRect r3 = i->rect(); + if ( r2.y() < r3.y() ) + i = item; + else if ( r2.y() == r3.y() && + r2.x() < r3.x() ) + i = item; + } + } + } + } else { + if ( alreadyIntersected ) + break; + } + } + + return i; +} + +/*! + Finds the last item whose bounding rectangle overlaps \a r and + returns a pointer to that item. \a r is given in content + coordinates. Returns 0 if no item overlaps \a r. + + \sa findFirstVisibleItem() +*/ + +QIconViewItem* QIconView::findLastVisibleItem( const QRect &r ) const +{ + QIconViewPrivate::ItemContainer *c = d->firstContainer; + QIconViewItem *i = 0; + bool alreadyIntersected = FALSE; + for ( ; c; c = c->n ) { + if ( c->rect.intersects( r ) ) { + alreadyIntersected = TRUE; + QIconViewItem *item = c->items.first(); + for ( ; item; item = c->items.next() ) { + if ( r.intersects( item->rect() ) ) { + if ( !i ) { + i = item; + } else { + QRect r2 = item->rect(); + QRect r3 = i->rect(); + if ( r2.y() > r3.y() ) + i = item; + else if ( r2.y() == r3.y() && + r2.x() > r3.x() ) + i = item; + } + } + } + } else { + if ( alreadyIntersected ) + break; + } + } + + return i; +} + +/*! + Clears the icon view. All items are deleted. +*/ + +void QIconView::clear() +{ + setContentsPos( 0, 0 ); + d->clearing = TRUE; + bool block = signalsBlocked(); + blockSignals( TRUE ); + clearSelection(); + blockSignals( block ); + setContentsPos( 0, 0 ); + d->currentItem = 0; + + if ( !d->firstItem ) { + d->clearing = FALSE; + return; + } + + QIconViewItem *item = d->firstItem, *tmp; + d->firstItem = 0; + while ( item ) { + tmp = item->next; + delete item; + item = tmp; + } + QIconViewPrivate::ItemContainer *c = d->firstContainer, *tmpc; + while ( c ) { + tmpc = c->n; + delete c; + c = tmpc; + } + d->firstContainer = d->lastContainer = 0; + + d->count = 0; + d->lastItem = 0; + setCurrentItem( 0 ); + d->highlightedItem = 0; + d->tmpCurrentItem = 0; + d->drawDragShapes = FALSE; + + resizeContents( 0, 0 ); + // maybe we don�t need this update, so delay it + d->fullRedrawTimer->start( 0, TRUE ); + + d->cleared = TRUE; + d->clearing = FALSE; +} + +/*! + \property QIconView::gridX + \brief the horizontal grid of the icon view + + If the value is -1, (the default), QIconView computes suitable + column widths based on the icon view's contents. + + Note that setting a grid width overrides setMaxItemWidth(). +*/ + +void QIconView::setGridX( int rx ) +{ + d->rastX = rx >= 0 ? rx : -1; +} + +/*! + \property QIconView::gridY + \brief the vertical grid of the icon view + + If the value is -1, (the default), QIconView computes suitable + column heights based on the icon view's contents. +*/ + +void QIconView::setGridY( int ry ) +{ + d->rastY = ry >= 0 ? ry : -1; +} + +int QIconView::gridX() const +{ + return d->rastX; +} + +int QIconView::gridY() const +{ + return d->rastY; +} + +/*! + \property QIconView::spacing + \brief the space in pixels between icon view items + + The default is 5 pixels. + + Negative values for spacing are illegal. +*/ + +void QIconView::setSpacing( int sp ) +{ + d->spacing = sp; +} + +int QIconView::spacing() const +{ + return d->spacing; +} + +/*! + \property QIconView::itemTextPos + \brief the position where the text of each item is drawn. + + Valid values are \c Bottom or \c Right. The default is \c Bottom. +*/ + +void QIconView::setItemTextPos( ItemTextPos pos ) +{ + if ( pos == d->itemTextPos || ( pos != Bottom && pos != Right ) ) + return; + + d->itemTextPos = pos; + + QIconViewItem *item = d->firstItem; + for ( ; item; item = item->next ) { + item->wordWrapDirty = TRUE; + item->calcRect(); + } + + arrangeItemsInGrid( TRUE ); +} + +QIconView::ItemTextPos QIconView::itemTextPos() const +{ + return d->itemTextPos; +} + +/*! + \property QIconView::itemTextBackground + \brief the brush to use when drawing the background of an item's text. + + By default this brush is set to NoBrush, meaning that only the + normal icon view background is used. +*/ + +void QIconView::setItemTextBackground( const QBrush &brush ) +{ + d->itemTextBrush = brush; +} + +QBrush QIconView::itemTextBackground() const +{ + return d->itemTextBrush; +} + +/*! + \property QIconView::arrangement + \brief the arrangement mode of the icon view + + This can be \c LeftToRight or \c TopToBottom. The default is \c + LeftToRight. +*/ + +void QIconView::setArrangement( Arrangement am ) +{ + if ( d->arrangement == am ) + return; + + d->arrangement = am; + + viewport()->setUpdatesEnabled( FALSE ); + resizeContents( viewport()->width(), viewport()->height() ); + viewport()->setUpdatesEnabled( TRUE ); + arrangeItemsInGrid( TRUE ); +} + +QIconView::Arrangement QIconView::arrangement() const +{ + return d->arrangement; +} + +/*! + \property QIconView::resizeMode + \brief the resize mode of the icon view + + This can be \c Fixed or \c Adjust. The default is \c Fixed. + See \l ResizeMode. +*/ + +void QIconView::setResizeMode( ResizeMode rm ) +{ + if ( d->resizeMode == rm ) + return; + + d->resizeMode = rm; +} + +QIconView::ResizeMode QIconView::resizeMode() const +{ + return d->resizeMode; +} + +/*! + \property QIconView::maxItemWidth + \brief the maximum width that an item may have. + + The default is 100 pixels. + + Note that if the gridX() value is set QIconView will ignore + this property. +*/ + +void QIconView::setMaxItemWidth( int w ) +{ + d->maxItemWidth = w; +} + +/*! + \property QIconView::maxItemTextLength + \brief the maximum length (in characters) that an item's text may have. + + The default is 255 characters. +*/ + +void QIconView::setMaxItemTextLength( int w ) +{ + d->maxItemTextLength = w; +} + +int QIconView::maxItemWidth() const +{ + if ( d->rastX != -1 ) + return d->rastX - 2; + else + return d->maxItemWidth; +} + +int QIconView::maxItemTextLength() const +{ + return d->maxItemTextLength; +} + +/*! + \property QIconView::itemsMovable + \brief whether the user is allowed to move items around in the icon view + + The default is TRUE. +*/ + +void QIconView::setItemsMovable( bool b ) +{ + d->rearrangeEnabled = b; +} + +bool QIconView::itemsMovable() const +{ + return d->rearrangeEnabled; +} + +/*! + \property QIconView::autoArrange + \brief whether the icon view rearranges its items when a new item is inserted. + + The default is TRUE. + + Note that if the icon view is not visible at the time of + insertion, QIconView defers all position-related work until it is + shown and then calls arrangeItemsInGrid(). +*/ + +void QIconView::setAutoArrange( bool b ) +{ + d->reorderItemsWhenInsert = b; +} + +bool QIconView::autoArrange() const +{ + return d->reorderItemsWhenInsert; +} + +/*! + If \a sort is TRUE, this function sets the icon view to sort items + when a new item is inserted. If \a sort is FALSE, the icon view + will not be sorted. + + Note that autoArrange() must be TRUE for sorting to take place. + + If \a ascending is TRUE (the default), items are sorted in + ascending order. If \a ascending is FALSE, items are sorted in + descending order. + + QIconViewItem::compare() is used to compare pairs of items. The + sorting is based on the items' keys; these default to the items' + text unless specifically set to something else. + + \sa QIconView::setAutoArrange(), QIconView::autoArrange(), + sortDirection(), sort(), QIconViewItem::setKey() +*/ + +void QIconView::setSorting( bool sort, bool ascending ) +{ + d->resortItemsWhenInsert = sort; + d->sortDirection = ascending; +} + +/*! + \property QIconView::sorting + \brief whether the icon view sorts on insertion + + The default is FALSE, i.e. no sorting on insertion. + + To set the sorting, use setSorting(). +*/ + +bool QIconView::sorting() const +{ + return d->resortItemsWhenInsert; +} + +/*! + \property QIconView::sortDirection + \brief whether the sort direction for inserting new items is ascending; + + The default is TRUE (i.e. ascending). This sort direction is only + meaningful if both sorting() and autoArrange() are TRUE. + + To set the sort direction, use setSorting() +*/ + +bool QIconView::sortDirection() const +{ + return d->sortDirection; +} + +/*! + \property QIconView::wordWrapIconText + \brief whether the item text will be word-wrapped if it is too long + + The default is TRUE. + + If this property is FALSE, icon text that is too long is + truncated, and an ellipsis (...) appended to indicate that + truncation has occurred. The full text can still be seen by the + user if they hover the mouse because the full text is shown in a + tooltip; see setShowToolTips(). +*/ + +void QIconView::setWordWrapIconText( bool b ) +{ + if ( d->wordWrapIconText == (uint)b ) + return; + + d->wordWrapIconText = b; + for ( QIconViewItem *item = d->firstItem; item; item = item->next ) { + item->wordWrapDirty = TRUE; + item->calcRect(); + } + arrangeItemsInGrid( TRUE ); +} + +bool QIconView::wordWrapIconText() const +{ + return d->wordWrapIconText; +} + +/*! + \property QIconView::showToolTips + \brief whether the icon view will display a tool tip with the complete text for any truncated item text + + The default is TRUE. Note that this has no effect if + setWordWrapIconText() is TRUE, as it is by default. +*/ + +void QIconView::setShowToolTips( bool b ) +{ + d->showTips = b; +} + +bool QIconView::showToolTips() const +{ + return d->showTips; +} + +/*! + \reimp +*/ +void QIconView::contentsMousePressEvent( QMouseEvent *e ) +{ + contentsMousePressEventEx( e ); +} + +void QIconView::contentsMousePressEventEx( QMouseEvent *e ) +{ + if ( d->rubber ) { + QRect r( d->rubber->normalize() ); + delete d->rubber; + d->rubber = 0; + + repaintContents( r, FALSE ); + d->dragging = FALSE; + + delete d->backrubber; + d->backrubber = 0; + + if ( d->scrollTimer ) { + disconnect( d->scrollTimer, SIGNAL( timeout() ), this, SLOT( doAutoScroll() ) ); + d->scrollTimer->stop(); + delete d->scrollTimer; + d->scrollTimer = 0; + } + } + + d->dragStartPos = e->pos(); + QIconViewItem *item = findItem( e->pos() ); + d->pressedItem = item; + + if ( item ) + d->selectAnchor = item; + +#ifndef QT_NO_TEXTEDIT + if ( d->renamingItem ) + d->renamingItem->renameItem(); +#endif + + if ( !d->currentItem && !item && d->firstItem ) { + d->currentItem = d->firstItem; + repaintItem( d->firstItem ); + } + + if (item && item->dragEnabled()) + d->startDragItem = item; + else + d->startDragItem = 0; + + if ( e->button() == LeftButton && !( e->state() & ShiftButton ) && + !( e->state() & ControlButton ) && item && item->isSelected() && + item->textRect( FALSE ).contains( e->pos() ) ) { + + if ( !item->renameEnabled() ) { + d->mousePressed = TRUE; +#ifndef QT_NO_TEXTEDIT + } else { + ensureItemVisible( item ); + setCurrentItem( item ); + item->rename(); + goto emit_signals; +#endif + } + } + + d->pressedSelected = item && item->isSelected(); + + if ( item && item->isSelectable() ) { + if ( d->selectionMode == Single ) + item->setSelected( TRUE, e->state() & ControlButton ); + else if ( d->selectionMode == Multi ) + item->setSelected( !item->isSelected(), e->state() & ControlButton ); + else if ( d->selectionMode == Extended ) { + if ( e->state() & ShiftButton ) { + d->pressedSelected = FALSE; + bool block = signalsBlocked(); + blockSignals( TRUE ); + viewport()->setUpdatesEnabled( FALSE ); + QRect r; + bool select = TRUE; + if ( d->currentItem ) + r = QRect( QMIN( d->currentItem->x(), item->x() ), + QMIN( d->currentItem->y(), item->y() ), + 0, 0 ); + else + r = QRect( 0, 0, 0, 0 ); + if ( d->currentItem ) { + if ( d->currentItem->x() < item->x() ) + r.setWidth( item->x() - d->currentItem->x() + item->width() ); + else + r.setWidth( d->currentItem->x() - item->x() + d->currentItem->width() ); + if ( d->currentItem->y() < item->y() ) + r.setHeight( item->y() - d->currentItem->y() + item->height() ); + else + r.setHeight( d->currentItem->y() - item->y() + d->currentItem->height() ); + r = r.normalize(); + QIconViewPrivate::ItemContainer *c = d->firstContainer; + bool alreadyIntersected = FALSE; + QRect redraw; + for ( ; c; c = c->n ) { + if ( c->rect.intersects( r ) ) { + alreadyIntersected = TRUE; + QIconViewItem *i = c->items.first(); + for ( ; i; i = c->items.next() ) { + if ( r.intersects( i->rect() ) ) { + redraw = redraw.unite( i->rect() ); + i->setSelected( select, TRUE ); + } + } + } else { + if ( alreadyIntersected ) + break; + } + } + redraw = redraw.unite( item->rect() ); + viewport()->setUpdatesEnabled( TRUE ); + repaintContents( redraw, FALSE ); + } + blockSignals( block ); + viewport()->setUpdatesEnabled( TRUE ); + item->setSelected( select, TRUE ); + emit selectionChanged(); + } else if ( e->state() & ControlButton ) { + d->pressedSelected = FALSE; + item->setSelected( !item->isSelected(), e->state() & ControlButton ); + } else { + item->setSelected( TRUE, e->state() & ControlButton ); + } + } + } else if ( ( d->selectionMode != Single || e->button() == RightButton ) + && !( e->state() & ControlButton ) ) + selectAll( FALSE ); + + setCurrentItem( item ); + + d->canStartRubber = FALSE; + if ( e->button() == LeftButton ) { + if ( !item && ( d->selectionMode == Multi || d->selectionMode == Extended ) ) { + d->canStartRubber = TRUE; + d->rubberStartX = e->x(); + d->rubberStartY = e->y(); + } + + d->mousePressed = TRUE; + } + + emit_signals: + if ( !d->canStartRubber ) { + emit mouseButtonPressed( e->button(), item, e->globalPos() ); + emit pressed( item ); + emit pressed( item, e->globalPos() ); + + if ( e->button() == RightButton ) + emit rightButtonPressed( item, e->globalPos() ); + } +} + +/*! + \reimp +*/ + +void QIconView::contentsContextMenuEvent( QContextMenuEvent *e ) +{ + if ( !receivers( SIGNAL(contextMenuRequested(QIconViewItem*,const QPoint&)) ) ) { + e->ignore(); + return; + } + if ( e->reason() == QContextMenuEvent::Keyboard ) { + QIconViewItem *item = currentItem(); + QRect r = item ? item->rect() : QRect( 0, 0, visibleWidth(), visibleHeight() ); + emit contextMenuRequested( item, viewport()->mapToGlobal( contentsToViewport( r.center() ) ) ); + } else { + d->mousePressed = FALSE; + QIconViewItem *item = findItem( e->pos() ); + emit contextMenuRequested( item, e->globalPos() ); + } +} + +/*! + \reimp +*/ + +void QIconView::contentsMouseReleaseEvent( QMouseEvent *e ) +{ + QIconViewItem *item = findItem( e->pos() ); + d->selectedItems.clear(); + + bool emitClicked = TRUE; + d->mousePressed = FALSE; + d->startDragItem = 0; + + d->canStartRubber = FALSE; + if ( d->rubber ) { + QRect r(d->rubber->normalize()); + + if ( ( d->rubber->topLeft() - d->rubber->bottomRight() ).manhattanLength() > + QApplication::startDragDistance() ) + emitClicked = FALSE; + delete d->rubber; + d->rubber = 0; + repaintContents(r, FALSE); + d->dragging = FALSE; + delete d->backrubber; + d->backrubber = 0; + d->currentItem = d->tmpCurrentItem; + d->tmpCurrentItem = 0; + if ( d->currentItem ) + repaintItem( d->currentItem ); + } + + if ( d->scrollTimer ) { + disconnect( d->scrollTimer, SIGNAL( timeout() ), this, SLOT( doAutoScroll() ) ); + d->scrollTimer->stop(); + delete d->scrollTimer; + d->scrollTimer = 0; + } + + if ( d->selectionMode == Extended && + d->currentItem == d->pressedItem && + d->pressedSelected && d->currentItem ) { + bool block = signalsBlocked(); + blockSignals( TRUE ); + clearSelection(); + blockSignals( block ); + if ( d->currentItem->isSelectable() ) { + d->currentItem->selected = TRUE; + repaintItem( d->currentItem ); + } + emit selectionChanged(); + } + d->pressedItem = 0; + + if ( emitClicked ) { + emit mouseButtonClicked( e->button(), item, e->globalPos() ); + emit clicked( item ); + emit clicked( item, e->globalPos() ); + if ( e->button() == RightButton ) + emit rightButtonClicked( item, e->globalPos() ); + } +} + +/*! + \reimp +*/ + +void QIconView::contentsMouseMoveEvent( QMouseEvent *e ) +{ + QIconViewItem *item = findItem( e->pos() ); + if ( d->highlightedItem != item ) { + if ( item ) + emit onItem( item ); + else + emit onViewport(); + d->highlightedItem = item; + } + + if ( d->mousePressed && e->state() == NoButton ) + d->mousePressed = FALSE; + + if ( d->startDragItem ) + item = d->startDragItem; + + if ( d->mousePressed && item && item == d->currentItem && + ( item->isSelected() || d->selectionMode == NoSelection ) && item->dragEnabled() ) { + if ( !d->startDragItem ) { + d->currentItem->setSelected( TRUE, TRUE ); + d->startDragItem = item; + } + if ( ( d->dragStartPos - e->pos() ).manhattanLength() > QApplication::startDragDistance() ) { + d->mousePressed = FALSE; + d->cleared = FALSE; +#ifndef QT_NO_DRAGANDDROP + startDrag(); +#endif + if ( d->tmpCurrentItem ) + repaintItem( d->tmpCurrentItem ); + } + } else if ( d->mousePressed && ((!d->currentItem && d->rubber) || d->canStartRubber) ) { + if ( d->canStartRubber ) { + d->canStartRubber = FALSE; + d->tmpCurrentItem = d->currentItem; + d->currentItem = 0; + repaintItem( d->tmpCurrentItem ); + delete d->rubber; + d->rubber = new QRect( d->rubberStartX, d->rubberStartY, 0, 0 ); + d->selectedItems.clear(); + if ( ( e->state() & ControlButton ) == ControlButton || + ( e->state() & ShiftButton ) == ShiftButton ) { + for ( QIconViewItem *i = firstItem(); i; i = i->nextItem() ) + if ( i->isSelected() ) + d->selectedItems.insert( i, i ); + } + } + doAutoScroll(); + } +} + +/*! + \reimp +*/ + +void QIconView::contentsMouseDoubleClickEvent( QMouseEvent *e ) +{ + QIconViewItem *item = findItem( e->pos() ); + if ( item ) { + selectAll( FALSE ); + item->setSelected( TRUE, TRUE ); + emit doubleClicked( item ); + } +} + +/*! + \reimp +*/ + +#ifndef QT_NO_DRAGANDDROP +void QIconView::contentsDragEnterEvent( QDragEnterEvent *e ) +{ + d->dragging = TRUE; + d->drawDragShapes = TRUE; + d->tmpCurrentItem = 0; + initDragEnter( e ); + d->oldDragPos = e->pos(); + d->oldDragAcceptAction = FALSE; + drawDragShapes( e->pos() ); + d->dropped = FALSE; +} + +/*! + \reimp +*/ + +void QIconView::contentsDragMoveEvent( QDragMoveEvent *e ) +{ + if ( e->pos() == d->oldDragPos ) { + if (d->oldDragAcceptAction) + e->acceptAction(); + else + e->ignore(); + return; + } + + drawDragShapes( d->oldDragPos ); + d->dragging = FALSE; + + QIconViewItem *old = d->tmpCurrentItem; + d->tmpCurrentItem = 0; + + QIconViewItem *item = findItem( e->pos() ); + + if ( item ) { + if ( old && + old->rect().contains(d->oldDragPos) && + !old->rect().contains(e->pos()) ) { + old->dragLeft(); + repaintItem( old ); + } + if ( !item->rect().contains(d->oldDragPos) ) + item->dragEntered(); + if (item->acceptDrop(e) || (item->isSelected() && e->source() == viewport())) { + d->oldDragAcceptAction = TRUE; + e->acceptAction(); + } else { + d->oldDragAcceptAction = FALSE; + e->ignore(); + } + + d->tmpCurrentItem = item; + QPainter p; + p.begin( viewport() ); + p.translate( -contentsX(), -contentsY() ); + item->paintFocus( &p, colorGroup() ); + p.end(); + } else { + e->acceptAction(); + d->oldDragAcceptAction = TRUE; + if ( old ) { + old->dragLeft(); + repaintItem( old ); + } + } + + d->oldDragPos = e->pos(); + drawDragShapes( e->pos() ); + d->dragging = TRUE; +} + +/*! + \reimp +*/ + +void QIconView::contentsDragLeaveEvent( QDragLeaveEvent * ) +{ + if ( !d->dropped ) + drawDragShapes( d->oldDragPos ); + d->dragging = FALSE; + + if ( d->tmpCurrentItem ) { + repaintItem( d->tmpCurrentItem ); + d->tmpCurrentItem->dragLeft(); + } + + d->tmpCurrentItem = 0; + d->isIconDrag = FALSE; + d->iconDragData.clear(); +} + +/*! + \reimp +*/ + +void QIconView::contentsDropEvent( QDropEvent *e ) +{ + d->dropped = TRUE; + d->dragging = FALSE; + drawDragShapes( d->oldDragPos ); + + if ( d->tmpCurrentItem ) + repaintItem( d->tmpCurrentItem ); + + QIconViewItem *i = findItem( e->pos() ); + + if ((!i || i->isSelected()) && e->source() == viewport() && d->currentItem && !d->cleared) { + if ( !d->rearrangeEnabled ) + return; + QRect r = d->currentItem->rect(); + + d->currentItem->move( e->pos() - d->dragStart ); + + int w = d->currentItem->x() + d->currentItem->width() + 1; + int h = d->currentItem->y() + d->currentItem->height() + 1; + + repaintItem( d->currentItem ); + repaintContents( r.x(), r.y(), r.width(), r.height(), FALSE ); + + int dx = d->currentItem->x() - r.x(); + int dy = d->currentItem->y() - r.y(); + + QIconViewItem *item = d->firstItem; + QRect rr; + for ( ; item; item = item->next ) { + if ( item->isSelected() && item != d->currentItem ) { + rr = rr.unite( item->rect() ); + item->moveBy( dx, dy ); + rr = rr.unite( item->rect() ); + } + w = QMAX( w, item->x() + item->width() + 1 ); + h = QMAX( h, item->y() + item->height() + 1 ); + } + repaintContents( rr, FALSE ); + bool fullRepaint = FALSE; + if ( w > contentsWidth() || + h > contentsHeight() ) + fullRepaint = TRUE; + + int oldw = contentsWidth(); + int oldh = contentsHeight(); + + resizeContents( w, h ); + + + if ( fullRepaint ) { + repaintContents( oldw, 0, contentsWidth() - oldw, contentsHeight(), FALSE ); + repaintContents( 0, oldh, contentsWidth(), contentsHeight() - oldh, FALSE ); + } + e->acceptAction(); + } else if ( !i && ( e->source() != viewport() || d->cleared ) ) { + QValueList<QIconDragItem> lst; + if ( QIconDrag::canDecode( e ) ) { + QValueList<QIconDragDataItem> l; + QIconDragPrivate::decode( e, l ); + QValueList<QIconDragDataItem>::Iterator it = l.begin(); + for ( ; it != l.end(); ++it ) + lst << ( *it ).data; + } + emit dropped( e, lst ); + } else if ( i ) { + QValueList<QIconDragItem> lst; + if ( QIconDrag::canDecode( e ) ) { + QValueList<QIconDragDataItem> l; + QIconDragPrivate::decode( e, l ); + QValueList<QIconDragDataItem>::Iterator it = l.begin(); + for ( ; it != l.end(); ++it ) + lst << ( *it ).data; + } + i->dropped( e, lst ); + } + d->isIconDrag = FALSE; +} +#endif + +/*! + This function grabs all paintevents that otherwise would have been + processed by the QScrollView::viewportPaintEvent(). Here we use a + doublebuffer to reduce 'on-paint' flickering on QIconView + (and of course its children). + + \sa QScrollView::viewportPaintEvent(), QIconView::drawContents() +*/ + +void QIconView::bufferedPaintEvent( QPaintEvent* pe ) +{ + QWidget* vp = viewport(); + QRect r = pe->rect() & vp->rect(); + int ex = r.x() + contentsX(); + int ey = r.y() + contentsY(); + int ew = r.width(); + int eh = r.height(); + + if ( !d->backBuffer ) + d->backBuffer = new QPixmap(vp->size()); + if ( d->backBuffer->size() != vp->size() ) { + // Resize function (with hysteresis). Uses a good compromise between memory + // consumption and speed (number) of resizes. + float newWidth = (float)vp->width(); + float newHeight = (float)vp->height(); + if ( newWidth > d->backBuffer->width() || newHeight > d->backBuffer->height() ) + { + newWidth *= 1.1892; + newHeight *= 1.1892; + d->backBuffer->resize( (int)newWidth, (int)newHeight ); + } else if ( 1.5*newWidth < d->backBuffer->width() || 1.5*newHeight < d->backBuffer->height() ) + d->backBuffer->resize( (int)newWidth, (int)newHeight ); + } + + QPainter p; + p.begin(d->backBuffer, vp); + drawContentsOffset(&p, contentsX(), contentsY(), ex, ey, ew, eh); + p.end(); + bitBlt(vp, r.x(), r.y(), d->backBuffer, r.x(), r.y(), ew, eh); +} + +/*! + \reimp +*/ + +void QIconView::resizeEvent( QResizeEvent* e ) +{ + QScrollView::resizeEvent( e ); + if ( d->resizeMode == Adjust ) { + optimize_layout = TRUE; + adjustItems(); + optimize_layout = FALSE; +#if 0 // no need for timer delay anymore + d->oldSize = e->oldSize(); + if ( d->adjustTimer->isActive() ) + d->adjustTimer->stop(); + d->adjustTimer->start( 0, TRUE ); +#endif + } +} + +/*! + Adjusts the positions of the items to the geometry of the icon + view. +*/ + +void QIconView::adjustItems() +{ + d->adjustTimer->stop(); + if ( d->resizeMode == Adjust ) + arrangeItemsInGrid( TRUE ); +} + +/*! + \reimp +*/ + +void QIconView::keyPressEvent( QKeyEvent *e ) +{ + if ( !d->firstItem ) + return; + + if ( !d->currentItem ) { + setCurrentItem( d->firstItem ); + if ( d->selectionMode == Single ) + d->currentItem->setSelected( TRUE, TRUE ); + return; + } + + bool selectCurrent = TRUE; + + switch ( e->key() ) { + case Key_Escape: + e->ignore(); + break; +#ifndef QT_NO_TEXTEDIT + case Key_F2: { + if ( d->currentItem->renameEnabled() ) { + d->currentItem->renameItem(); + d->currentItem->rename(); + return; + } + } break; +#endif + case Key_Home: { + d->currInputString = QString::null; + if ( !d->firstItem ) + break; + + selectCurrent = FALSE; + + QIconViewItem *item = 0; + QIconViewPrivate::ItemContainer *c = d->firstContainer; + while ( !item && c ) { + QPtrList<QIconViewItem> &list = c->items; + QIconViewItem *i = list.first(); + while ( i ) { + if ( !item ) { + item = i; + } else { + if ( d->arrangement == LeftToRight ) { + // we use pixmap so the items textlength are ignored + // find topmost, leftmost item + if ( i->pixmapRect( FALSE ).y() < item->pixmapRect( FALSE ).y() || + ( i->pixmapRect( FALSE ).y() == item->pixmapRect( FALSE ).y() && + i->pixmapRect( FALSE ).x() < item->pixmapRect( FALSE ).x() ) ) + item = i; + } else { + // find leftmost, topmost item + if ( i->pixmapRect( FALSE ).x() < item->pixmapRect( FALSE ).x() || + ( i->pixmapRect( FALSE ).x() == item->pixmapRect( FALSE ).x() && + i->pixmapRect( FALSE ).y() < item->pixmapRect( FALSE ).y() ) ) + item = i; + } + } + i = list.next(); + } + c = c->n; + } + + if ( item ) { + QIconViewItem *old = d->currentItem; + setCurrentItem( item ); + ensureItemVisible( item ); + handleItemChange( old, e->state() & ShiftButton, + e->state() & ControlButton, TRUE ); + } + } break; + case Key_End: { + d->currInputString = QString::null; + if ( !d->lastItem ) + break; + + selectCurrent = FALSE; + + QIconViewItem *item = 0; + QIconViewPrivate::ItemContainer *c = d->lastContainer; + while ( !item && c ) { + QPtrList<QIconViewItem> &list = c->items; + QIconViewItem *i = list.first(); + while ( i ) { + if ( !item ) { + item = i; + } else { + if ( d->arrangement == LeftToRight ) { + // find bottommost, rightmost item + if ( i->pixmapRect( FALSE ).bottom() > item->pixmapRect( FALSE ).bottom() || + ( i->pixmapRect( FALSE ).bottom() == item->pixmapRect( FALSE ).bottom() && + i->pixmapRect( FALSE ).right() > item->pixmapRect( FALSE ).right() ) ) + item = i; + } else { + // find rightmost, bottommost item + if ( i->pixmapRect( FALSE ).right() > item->pixmapRect( FALSE ).right() || + ( i->pixmapRect( FALSE ).right() == item->pixmapRect( FALSE ).right() && + i->pixmapRect( FALSE ).bottom() > item->pixmapRect( FALSE ).bottom() ) ) + item = i; + } + } + i = list.next(); + } + c = c->p; + } + + if ( item ) { + QIconViewItem *old = d->currentItem; + setCurrentItem( item ); + ensureItemVisible( item ); + handleItemChange( old, e->state() & ShiftButton, + e->state() & ControlButton, TRUE ); + } + } break; + case Key_Right: { + d->currInputString = QString::null; + QIconViewItem *item; + selectCurrent = FALSE; + Direction dir = DirRight; + + QRect r( 0, d->currentItem->y(), contentsWidth(), d->currentItem->height() ); + item = findItem( dir, d->currentItem->rect().center(), r ); + + // search the row below from the right + while ( !item && r.y() < contentsHeight() ) { + r.moveBy(0, d->currentItem->height() ); + item = findItem( dir, QPoint( 0, r.center().y() ), r ); + } + + if ( item ) { + QIconViewItem *old = d->currentItem; + setCurrentItem( item ); + ensureItemVisible( item ); + handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton ); + } + } break; + case Key_Left: { + d->currInputString = QString::null; + QIconViewItem *item; + selectCurrent = FALSE; + Direction dir = DirLeft; + + QRect r( 0, d->currentItem->y(), contentsWidth(), d->currentItem->height() ); + item = findItem( dir, d->currentItem->rect().center(), r ); + + // search the row above from the left + while ( !item && r.y() >= 0 ) { + r.moveBy(0, - d->currentItem->height() ); + item = findItem( dir, QPoint( contentsWidth(), r.center().y() ), r ); + } + + if ( item ) { + QIconViewItem *old = d->currentItem; + setCurrentItem( item ); + ensureItemVisible( item ); + handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton ); + } + } break; + case Key_Space: { + d->currInputString = QString::null; + if ( d->selectionMode == Single) + break; + + d->currentItem->setSelected( !d->currentItem->isSelected(), TRUE ); + } break; + case Key_Enter: case Key_Return: + d->currInputString = QString::null; + emit returnPressed( d->currentItem ); + break; + case Key_Down: { + d->currInputString = QString::null; + QIconViewItem *item; + selectCurrent = FALSE; + Direction dir = DirDown; + + QRect r( d->currentItem->x(), 0, d->currentItem->width(), contentsHeight() ); + item = findItem( dir, d->currentItem->rect().center(), r ); + + // finding the closest item below and to the right + while ( !item && r.x() < contentsWidth() ) { + r.moveBy( r.width() , 0 ); + item = findItem( dir, QPoint( r.center().x(), 0 ), r ); + } + + + QIconViewItem *i = d->currentItem; + setCurrentItem( item ); + item = i; + handleItemChange( item, e->state() & ShiftButton, e->state() & ControlButton ); + } break; + case Key_Up: { + d->currInputString = QString::null; + QIconViewItem *item; + selectCurrent = FALSE; + Direction dir = DirUp; + + QRect r( d->currentItem->x(), 0, d->currentItem->width(), contentsHeight() ); + item = findItem( dir, d->currentItem->rect().center(), r ); + + // finding the closest item above and to the left + while ( !item && r.x() >= 0 ) { + r.moveBy(- r.width(), 0 ); + item = findItem( dir, QPoint(r.center().x(), contentsHeight() ), r ); + } + + QIconViewItem *i = d->currentItem; + setCurrentItem( item ); + item = i; + handleItemChange( item, e->state() & ShiftButton, e->state() & ControlButton ); + } break; + case Key_Next: { + d->currInputString = QString::null; + selectCurrent = FALSE; + QRect r; + if ( d->arrangement == LeftToRight ) + r = QRect( 0, d->currentItem->y() + visibleHeight(), contentsWidth(), visibleHeight() ); + else + r = QRect( d->currentItem->x() + visibleWidth(), 0, visibleWidth(), contentsHeight() ); + QIconViewItem *item = d->currentItem; + QIconViewItem *ni = findFirstVisibleItem( r ); + if ( !ni ) { + if ( d->arrangement == LeftToRight ) + r = QRect( 0, d->currentItem->y() + d->currentItem->height(), contentsWidth(), contentsHeight() ); + else + r = QRect( d->currentItem->x() + d->currentItem->width(), 0, contentsWidth(), contentsHeight() ); + ni = findLastVisibleItem( r ); + } + if ( ni ) { + setCurrentItem( ni ); + handleItemChange( item, e->state() & ShiftButton, e->state() & ControlButton ); + } + } break; + case Key_Prior: { + d->currInputString = QString::null; + selectCurrent = FALSE; + QRect r; + if ( d->arrangement == LeftToRight ) + r = QRect( 0, d->currentItem->y() - visibleHeight(), contentsWidth(), visibleHeight() ); + else + r = QRect( d->currentItem->x() - visibleWidth(), 0, visibleWidth(), contentsHeight() ); + QIconViewItem *item = d->currentItem; + QIconViewItem *ni = findFirstVisibleItem( r ); + if ( !ni ) { + if ( d->arrangement == LeftToRight ) + r = QRect( 0, 0, contentsWidth(), d->currentItem->y() ); + else + r = QRect( 0, 0, d->currentItem->x(), contentsHeight() ); + ni = findFirstVisibleItem( r ); + } + if ( ni ) { + setCurrentItem( ni ); + handleItemChange( item, e->state() & ShiftButton, e->state() & ControlButton ); + } + } break; + default: + if ( !e->text().isEmpty() && e->text()[ 0 ].isPrint() ) { + selectCurrent = FALSE; + QIconViewItem *i = d->currentItem; + if ( !i ) + i = d->firstItem; + if ( !d->inputTimer->isActive() ) { + d->currInputString = e->text(); + i = i->next; + if ( !i ) + i = d->firstItem; + i = findItemByName( i ); + } else { + d->inputTimer->stop(); + d->currInputString += e->text(); + i = findItemByName( i ); + if ( !i ) { + d->currInputString = e->text(); + if (d->currentItem && d->currentItem->next) + i = d->currentItem->next; + else + i = d->firstItem; + i = findItemByName(i); + } + } + if ( i ) { + setCurrentItem( i ); + if ( d->selectionMode == Extended ) { + bool changed = FALSE; + bool block = signalsBlocked(); + blockSignals( TRUE ); + selectAll( FALSE ); + blockSignals( block ); + if ( !i->selected && i->isSelectable() ) { + changed = TRUE; + i->selected = TRUE; + repaintItem( i ); + } + if ( changed ) + emit selectionChanged(); + } + } + d->inputTimer->start( 400, TRUE ); + } else { + selectCurrent = FALSE; + d->currInputString = QString::null; + if ( e->state() & ControlButton ) { + switch ( e->key() ) { + case Key_A: + selectAll( TRUE ); + break; + } + } + e->ignore(); + return; + } + } + + if ( !( e->state() & ShiftButton ) || !d->selectAnchor ) + d->selectAnchor = d->currentItem; + + if ( d->currentItem && !d->currentItem->isSelected() && + d->selectionMode == Single && selectCurrent ) { + d->currentItem->setSelected( TRUE ); + } + + ensureItemVisible( d->currentItem ); +} + +/* + Finds the closest item in the Direction \a dir relative from the point \a relativeTo + which intersects with the searchRect. + + The function choses the closest item with its center in the searchRect. +*/ +QIconViewItem* QIconView::findItem( Direction dir, + const QPoint &relativeTo, + const QRect &searchRect ) const +{ + QIconViewItem *item; + QIconViewItem *centerMatch = 0; + int centerMatchML = 0; + + // gets list of containers with potential items + QPtrList<QIconViewPrivate::ItemContainer>* cList = + d->findContainers( dir, relativeTo, searchRect); + + cList->first(); + while ( cList->current() && !centerMatch ) { + QPtrList<QIconViewItem> &list = (cList->current())->items; + for ( item = list.first(); item; item = list.next() ) { + if ( neighbourItem( dir, relativeTo, item ) && + searchRect.contains( item->rect().center() ) && + item != currentItem() ) { + int ml = (relativeTo - item->rect().center()).manhattanLength(); + if ( centerMatch ) { + if ( ml < centerMatchML ) { + centerMatch = item; + centerMatchML = ml; + } + } else { + centerMatch = item; + centerMatchML = ml; + } + } + } + cList->next(); + } + delete cList; + return centerMatch; +} + + +/* + Returns TRUE if the items orientation compared to + the point \a relativeTo is correct. +*/ +bool QIconView::neighbourItem( Direction dir, + const QPoint &relativeTo, + const QIconViewItem *item ) const +{ + switch ( dir ) { + case DirUp: + if ( item->rect().center().y() < relativeTo.y() ) + return TRUE; + break; + case DirDown: + if ( item->rect().center().y() > relativeTo.y() ) + return TRUE; + break; + case DirLeft: + if ( item->rect().center().x() < relativeTo.x() ) + return TRUE; + break; + case DirRight: + if ( item->rect().center().x() > relativeTo.x() ) + return TRUE; + break; + default: + // nothing + break; + } + return FALSE; +} + +/*! + \reimp +*/ + +void QIconView::focusInEvent( QFocusEvent* ) +{ + d->mousePressed = FALSE; + d->inMenuMode = FALSE; + if ( d->currentItem ) { + repaintItem( d->currentItem ); + } else if ( d->firstItem && QFocusEvent::reason() != QFocusEvent::Mouse ) { + d->currentItem = d->firstItem; + emit currentChanged( d->currentItem ); + repaintItem( d->currentItem ); + } + + if ( style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this ) ) + repaintSelectedItems(); + + if ( d->currentItem ) + setMicroFocusHint( d->currentItem->x(), d->currentItem->y(), d->currentItem->width(), d->currentItem->height(), FALSE ); +} + +/*! + \reimp +*/ + +void QIconView::focusOutEvent( QFocusEvent* ) +{ + if (style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this )) { + d->inMenuMode = + QFocusEvent::reason() == QFocusEvent::Popup || + (qApp->focusWidget() && qApp->focusWidget()->inherits("QMenuBar")); + if ( !d->inMenuMode ) + repaintSelectedItems(); + } + if ( d->currentItem ) + repaintItem( d->currentItem ); +} + +/*! + Draws the rubber band using the painter \a p. +*/ + +void QIconView::drawRubber( QPainter *p ) +{ + if ( !p || !d->rubber ) + return; + + QPoint pnt( d->rubber->x(), d->rubber->y() ); + pnt = contentsToViewport( pnt ); + + style().drawPrimitive( QStyle::PE_RubberBand, p, + QRect( pnt.x(), pnt.y(), d->rubber->width(), d->rubber->height() ).normalize(), + colorGroup(), QStyle::Style_Default, QStyleOption(colorGroup().base()) ); +} + +/*! + Returns the QDragObject that should be used for drag-and-drop. + This function is called by the icon view when starting a drag to + get the dragobject that should be used for the drag. Subclasses + may reimplement this. + + \sa QIconDrag +*/ + +#ifndef QT_NO_DRAGANDDROP +QDragObject *QIconView::dragObject() +{ + if ( !d->currentItem ) + return 0; + + QPoint orig = d->dragStartPos; + + QIconDrag *drag = new QIconDrag( viewport() ); + drag->setPixmap( ( d->currentItem->pixmap() ? + *d->currentItem->pixmap() : QPixmap() ), // ### QPicture + QPoint( d->currentItem->pixmapRect().width() / 2, + d->currentItem->pixmapRect().height() / 2 ) ); + + if ( d->selectionMode == NoSelection ) { + QIconViewItem *item = d->currentItem; + drag->append( QIconDragItem(), + QRect( item->pixmapRect( FALSE ).x() - orig.x(), + item->pixmapRect( FALSE ).y() - orig.y(), + item->pixmapRect().width(), item->pixmapRect().height() ), + QRect( item->textRect( FALSE ).x() - orig.x(), + item->textRect( FALSE ).y() - orig.y(), + item->textRect().width(), item->textRect().height() ) ); + } else { + for ( QIconViewItem *item = d->firstItem; item; item = item->next ) { + if ( item->isSelected() ) { + drag->append( QIconDragItem(), + QRect( item->pixmapRect( FALSE ).x() - orig.x(), + item->pixmapRect( FALSE ).y() - orig.y(), + item->pixmapRect().width(), item->pixmapRect().height() ), + QRect( item->textRect( FALSE ).x() - orig.x(), + item->textRect( FALSE ).y() - orig.y(), + item->textRect().width(), item->textRect().height() ) ); + } + } + } + + return drag; +} + +/*! + Starts a drag. +*/ + +void QIconView::startDrag() +{ + if ( !d->startDragItem ) + return; + + QPoint orig = d->dragStartPos; + d->dragStart = QPoint( orig.x() - d->startDragItem->x(), + orig.y() - d->startDragItem->y() ); + d->startDragItem = 0; + d->mousePressed = FALSE; + d->pressedItem = 0; + d->pressedSelected = 0; + + QDragObject *drag = dragObject(); + if ( !drag ) + return; + + if ( drag->drag() ) + if ( drag->target() != viewport() ) + emit moved(); +} + +#endif + +/*! + Inserts the QIconViewItem \a item in the icon view's grid. \e{You + should never need to call this function.} Instead, insert + QIconViewItems by creating them with a pointer to the QIconView + that they are to be inserted into. +*/ + +void QIconView::insertInGrid( QIconViewItem *item ) +{ + if ( !item ) + return; + + if ( d->reorderItemsWhenInsert ) { + // #### make this efficient - but it's not too dramatic + int y = d->spacing; + + item->dirty = FALSE; + if ( item == d->firstItem ) { + bool dummy; + makeRowLayout( item, y, dummy ); + return; + } + + QIconViewItem *begin = rowBegin( item ); + y = begin->y(); + while ( begin ) { + bool dummy; + begin = makeRowLayout( begin, y, dummy ); + + if ( !begin || !begin->next ) + break; + + begin = begin->next; + } + item->dirty = FALSE; + } else { + QRegion r( QRect( 0, 0, QMAX( contentsWidth(), visibleWidthSB() ), + QMAX( contentsHeight(), visibleHeightSB() ) ) ); + + QIconViewItem *i = d->firstItem; + int y = -1; + for ( ; i; i = i->next ) { + r = r.subtract( i->rect() ); + y = QMAX( y, i->y() + i->height() ); + } + + QMemArray<QRect> rects = r.rects(); + QMemArray<QRect>::Iterator it = rects.begin(); + bool foundPlace = FALSE; + for ( ; it != rects.end(); ++it ) { + QRect rect = *it; + if ( rect.width() >= item->width() && + rect.height() >= item->height() ) { + int sx = 0, sy = 0; + if ( rect.width() >= item->width() + d->spacing ) + sx = d->spacing; + if ( rect.height() >= item->height() + d->spacing ) + sy = d->spacing; + item->move( rect.x() + sx, rect.y() + sy ); + foundPlace = TRUE; + break; + } + } + + if ( !foundPlace ) + item->move( d->spacing, y + d->spacing ); + + resizeContents( QMAX( contentsWidth(), item->x() + item->width() ), + QMAX( contentsHeight(), item->y() + item->height() ) ); + item->dirty = FALSE; + } +} + +/*! + Emits a signal to indicate selection changes. \a i is the + QIconViewItem that was selected or de-selected. + + \e{You should never need to call this function.} +*/ + +void QIconView::emitSelectionChanged( QIconViewItem *i ) +{ + emit selectionChanged(); + if ( d->selectionMode == Single ) + emit selectionChanged( i ? i : d->currentItem ); +} + +/*! + \internal +*/ + +void QIconView::emitRenamed( QIconViewItem *item ) +{ + if ( !item ) + return; + + emit itemRenamed( item, item->text() ); + emit itemRenamed( item ); +} + +/*! + If a drag enters the icon view the shapes of the objects which the + drag contains are drawn, usnig \a pos as origin. +*/ + +void QIconView::drawDragShapes( const QPoint &pos ) +{ +#ifndef QT_NO_DRAGANDDROP + if ( pos == QPoint( -1, -1 ) ) + return; + + if ( !d->drawDragShapes ) { + d->drawDragShapes = TRUE; + return; + } + + QStyleOption opt(colorGroup().base()); + + QPainter p; + p.begin( viewport() ); + p.translate( -contentsX(), -contentsY() ); + p.setRasterOp( NotROP ); + p.setPen( QPen( color0 ) ); + + if ( d->isIconDrag ) { + QValueList<QIconDragDataItem>::Iterator it = d->iconDragData.begin(); + for ( ; it != d->iconDragData.end(); ++it ) { + QRect ir = (*it).item.pixmapRect(); + QRect tr = (*it).item.textRect(); + tr.moveBy( pos.x(), pos.y() ); + ir.moveBy( pos.x(), pos.y() ); + if ( !ir.intersects( QRect( contentsX(), contentsY(), visibleWidth(), visibleHeight() ) ) ) + continue; + + style().drawPrimitive(QStyle::PE_FocusRect, &p, ir, colorGroup(), + QStyle::Style_Default, opt); + style().drawPrimitive(QStyle::PE_FocusRect, &p, tr, colorGroup(), + QStyle::Style_Default, opt); + } + } else if ( d->numDragItems > 0 ) { + for ( int i = 0; i < d->numDragItems; ++i ) { + QRect r( pos.x() + i * 40, pos.y(), 35, 35 ); + style().drawPrimitive(QStyle::PE_FocusRect, &p, r, colorGroup(), + QStyle::Style_Default, opt); + } + + } + p.end(); +#endif +} + +/*! + When a drag enters the icon view, this function is called to + initialize it. Initializing in this context means getting + information about the drag, for example so that the icon view + knows enough about the drag to be able to draw drag shapes for the + drag data (e.g. shapes of icons which are dragged), etc. +*/ + +#ifndef QT_NO_DRAGANDDROP +void QIconView::initDragEnter( QDropEvent *e ) +{ + if ( QIconDrag::canDecode( e ) ) { + QIconDragPrivate::decode( e, d->iconDragData ); + d->isIconDrag = TRUE; + } else if ( QUriDrag::canDecode( e ) ) { + QStrList lst; + QUriDrag::decode( e, lst ); + d->numDragItems = lst.count(); + } else { + d->numDragItems = 0; + } + +} +#endif + +/*! + This function is called to draw the rectangle \a r of the + background using the painter \a p. + + The default implementation fills \a r with the viewport's + backgroundBrush(). Subclasses may reimplement this to draw custom + backgrounds. + + \sa contentsX() contentsY() drawContents() +*/ + +void QIconView::drawBackground( QPainter *p, const QRect &r ) +{ + p->fillRect( r, viewport()->backgroundBrush() ); +} + +/*! + \reimp +*/ + +bool QIconView::eventFilter( QObject * o, QEvent * e ) +{ + if ( o == viewport() ) { + switch( e->type() ) { + case QEvent::FocusIn: + focusInEvent( (QFocusEvent*)e ); + return TRUE; + case QEvent::FocusOut: + focusOutEvent( (QFocusEvent*)e ); + return TRUE; + case QEvent::Enter: + enterEvent( e ); + return TRUE; + case QEvent::Paint: + if ( o == viewport() ) { + if ( d->dragging ) { + if ( !d->rubber ) + drawDragShapes( d->oldDragPos ); + viewportPaintEvent( (QPaintEvent*)e ); + if ( !d->rubber ) + drawDragShapes( d->oldDragPos ); + } else { + bufferedPaintEvent( (QPaintEvent*)e ); + } + } + return TRUE; + default: + // nothing + break; + } + } + + return QScrollView::eventFilter( o, e ); +} + + +/*! + \reimp +*/ + +QSize QIconView::minimumSizeHint() const +{ + return QScrollView::minimumSizeHint(); +} + +/*! + \internal + Finds the next item after the start item beginning + with \a text. +*/ + +QIconViewItem* QIconView::findItemByName( QIconViewItem *start ) +{ + if ( !start ) + return 0; + QString match = d->currInputString.lower(); + if ( match.length() < 1 ) + return start; + QString curText; + QIconViewItem *i = start; + do { + curText = i->text().lower(); + if ( curText.startsWith( match ) ) + return i; + i = i->next; + if ( !i ) + i = d->firstItem; + } while ( i != start ); + return 0; +} + +/*! + Lays out a row of icons (if Arrangement == \c TopToBottom this is + a column). Starts laying out with the item \a begin. \a y is the + starting coordinate. Returns the last item of the row (column) and + sets the new starting coordinate to \a y. The \a changed parameter + is used internally. + + \warning This function may be made private in a future version of + Qt. We do not recommend calling it. +*/ + +QIconViewItem *QIconView::makeRowLayout( QIconViewItem *begin, int &y, bool &changed ) +{ + QIconViewItem *end = 0; + + // Find the first visible item + while (begin->next && (begin->isVisible() == FALSE)) { + begin = begin->next; + } + + bool reverse = QApplication::reverseLayout(); + changed = FALSE; + + if ( d->arrangement == LeftToRight ) { + + if ( d->rastX == -1 ) { + // first calculate the row height + int h = 0; + int x = 0; + int ih = 0; + QIconViewItem *item = begin; + for (;;) { + x += d->spacing + item->width(); + if ( x > visibleWidthSB() && item != begin ) { + item = item->prev; + while (item && (item->isVisible() == FALSE)) { + item = item->prev; + } + break; + } + h = QMAX( h, item->height() ); + ih = QMAX( ih, item->pixmapRect().height() ); + QIconViewItem *old = item; + item = item->next; + while (item && (item->isVisible() == FALSE)) { + item = item->next; + } + if ( !item ) { + item = old; + break; + } + } + end = item; + + if ( d->rastY != -1 ) + h = QMAX( h, d->rastY ); + + // now move the items + item = begin; + for (;;) { + item->dirty = FALSE; + int x; + if ( item == begin ) { + if ( reverse ) + x = visibleWidthSB() - d->spacing - item->width(); + else + x = d->spacing; + } else { + if ( reverse ) + x = item->prev->x() - item->width() - d->spacing; + else + x = item->prev->x() + item->prev->width() + d->spacing; + } + changed = item->move( x, y + ih - item->pixmapRect().height() ) || changed; + if ( y + h < item->y() + item->height() ) + h = QMAX( h, ih + item->textRect().height() ); + if ( item == end ) + break; + item = item->next; + } + y += h + d->spacing; + } else { + // first calculate the row height + int h = begin->height(); + int x = d->spacing; + int ih = begin->pixmapRect().height(); + QIconViewItem *item = begin; + int i = 0; + int sp = 0; + for (;;) { + int r = calcGridNum( item->width(), d->rastX ); + if ( item == begin ) { + i += r; + sp += r; + x = d->spacing + d->rastX * r; + } else { + sp += r; + i += r; + x = i * d->rastX + sp * d->spacing; + } + if ( x > visibleWidthSB() && item != begin ) { + item = item->prev; + while (item && (item->isVisible() == FALSE)) { + item = item->prev; + } + break; + } + h = QMAX( h, item->height() ); + ih = QMAX( ih, item->pixmapRect().height() ); + QIconViewItem *old = item; + item = item->next; + while (item && (item->isVisible() == FALSE)) { + item = item->next; + } + if ( !item ) { + item = old; + break; + } + } + end = item; + + if ( d->rastY != -1 ) + h = QMAX( h, d->rastY ); + + // now move the items + item = begin; + i = 0; + sp = 0; + for (;;) { + item->dirty = FALSE; + int r = calcGridNum( item->width(), d->rastX ); + if ( item == begin ) { + if ( d->itemTextPos == Bottom ) + changed = item->move( d->spacing + ( r * d->rastX - item->width() ) / 2, + y + ih - item->pixmapRect().height() ) || changed; + else + changed = item->move( d->spacing, y + ih - item->pixmapRect().height() ) || changed; + i += r; + sp += r; + } else { + sp += r; + int x = i * d->rastX + sp * d->spacing; + if ( d->itemTextPos == Bottom ) + changed = item->move( x + ( r * d->rastX - item->width() ) / 2, + y + ih - item->pixmapRect().height() ) || changed; + else + changed = item->move( x, y + ih - item->pixmapRect().height() ) || changed; + i += r; + } + if ( y + h < item->y() + item->height() ) + h = QMAX( h, ih + item->textRect().height() ); + if ( item == end ) + break; + item = item->next; + while (item && (item->isVisible() == FALSE)) { + item = item->next; + } + } + y += h + d->spacing; + } + + + } else { // -------------------------------- TopToBottom ------------------------------ + + int x = y; + + { + int w = 0; + int y = 0; + QIconViewItem *item = begin; + for (;;) { + y += d->spacing + item->height(); + if ( y > visibleHeightSB() && item != begin ) { + item = item->prev; + while (item && (item->isVisible() == FALSE)) { + item = item->prev; + } + break; + } + w = QMAX( w, item->width() ); + QIconViewItem *old = item; + item = item->next; + while (item && (item->isVisible() == FALSE)) { + item = item->next; + } + if ( !item ) { + item = old; + break; + } + } + end = item; + + if ( d->rastX != -1 ) + w = QMAX( w, d->rastX ); + + // now move the items + item = begin; + QIconViewItem *prevVisibleItem = NULL; + for (;;) { + item->dirty = FALSE; + if ( d->itemTextPos == Bottom ) { + if ( item == begin ) + changed = item->move( x + ( w - item->width() ) / 2, d->spacing ) || changed; + else + changed = item->move( x + ( w - item->width() ) / 2, + prevVisibleItem->y() + prevVisibleItem->height() + d->spacing ) || changed; + } else { + if ( item == begin ) + changed = item->move( x, d->spacing ) || changed; + else + changed = item->move( x, prevVisibleItem->y() + prevVisibleItem->height() + d->spacing ) || changed; + } + if ( item == end ) + break; + prevVisibleItem = item; + item = item->next; + while (item && (item->isVisible() == FALSE)) { + item = item->next; + } + } + x += w + d->spacing; + } + + y = x; + } + + return end; +} + +/*! + \internal + Calculates how many cells an item of width \a w needs in a grid with of + \a x and returns the result. +*/ + +int QIconView::calcGridNum( int w, int x ) const +{ + float r = (float)w / (float)x; + if ( ( w / x ) * x != w ) + r += 1.0; + return (int)r; +} + +/*! + \internal + Returns the first item of the row which contains \a item. +*/ + +QIconViewItem *QIconView::rowBegin( QIconViewItem * ) const +{ + // #### todo + return d->firstItem; +} + +/*! + Sorts and rearranges all the items in the icon view. If \a + ascending is TRUE, the items are sorted in increasing order, + otherwise they are sorted in decreasing order. + + QIconViewItem::compare() is used to compare pairs of items. The + sorting is based on the items' keys; these default to the items' + text unless specifically set to something else. + + Note that this function sets the sort order to \a ascending. + + \sa QIconViewItem::key(), QIconViewItem::setKey(), + QIconViewItem::compare(), QIconView::setSorting(), + QIconView::sortDirection() +*/ + +void QIconView::sort( bool ascending ) +{ + if ( count() == 0 ) + return; + + d->sortDirection = ascending; + QIconViewPrivate::SortableItem *items = new QIconViewPrivate::SortableItem[ count() ]; + + QIconViewItem *item = d->firstItem; + int i = 0; + for ( ; item; item = item->next ) + items[ i++ ].item = item; + + qsort( items, count(), sizeof( QIconViewPrivate::SortableItem ), cmpIconViewItems ); + + QIconViewItem *prev = 0; + item = 0; + if ( ascending ) { + for ( i = 0; i < (int)count(); ++i ) { + item = items[ i ].item; + if ( item ) { + item->prev = prev; + if ( item->prev ) + item->prev->next = item; + item->next = 0; + } + if ( i == 0 ) + d->firstItem = item; + if ( i == (int)count() - 1 ) + d->lastItem = item; + prev = item; + } + } else { + for ( i = (int)count() - 1; i >= 0 ; --i ) { + item = items[ i ].item; + if ( item ) { + item->prev = prev; + if ( item->prev ) + item->prev->next = item; + item->next = 0; + } + if ( i == (int)count() - 1 ) + d->firstItem = item; + if ( i == 0 ) + d->lastItem = item; + prev = item; + } + } + + delete [] items; + + arrangeItemsInGrid( TRUE ); +} + +/*! + \reimp +*/ + +QSize QIconView::sizeHint() const +{ + constPolish(); + + if ( !d->firstItem ) + return QScrollView::sizeHint(); + + if ( d->dirty && d->firstSizeHint ) { + ( (QIconView*)this )->resizeContents( QMAX( 400, contentsWidth() ), + QMAX( 400, contentsHeight() ) ); + if ( autoArrange() ) + ( (QIconView*)this )->arrangeItemsInGrid( FALSE ); + d->firstSizeHint = FALSE; + } + + d->dirty = TRUE; // ######## warwick: I'm sure this is wrong. Fixed in 2.3. + int extra = style().pixelMetric(QStyle::PM_ScrollBarExtent, + verticalScrollBar()) + 2*frameWidth(); + QSize s( QMIN(400, contentsWidth() + extra), + QMIN(400, contentsHeight() + extra) ); + return s; +} + +/*! + \internal +*/ + +void QIconView::updateContents() +{ + viewport()->update(); +} + +/*! + \reimp +*/ + +void QIconView::enterEvent( QEvent *e ) +{ + QScrollView::enterEvent( e ); + emit onViewport(); +} + +/*! + \internal + This function is always called when the geometry of an item changes. + This function moves the item into the correct area in the internal + data structure. +*/ + +void QIconView::updateItemContainer( QIconViewItem *item ) +{ + if ( !item || d->containerUpdateLocked || (!isVisible() && autoArrange()) ) + return; + + if ( item->d->container1 && d->firstContainer ) { + //Special-case to check if we can use removeLast otherwise use removeRef (slower) + if (item->d->container1->items.last() == item) + item->d->container1->items.removeLast(); + else + item->d->container1->items.removeRef( item ); + } + item->d->container1 = 0; + if ( item->d->container2 && d->firstContainer ) { + //Special-case to check if we can use removeLast otherwise use removeRef (slower) + if (item->d->container2->items.last() == item) + item->d->container2->items.removeLast(); + else + item->d->container2->items.removeRef( item ); + } + item->d->container2 = 0; + + QIconViewPrivate::ItemContainer *c = d->firstContainer; + if ( !c ) { + appendItemContainer(); + c = d->firstContainer; + } + + const QRect irect = item->rect(); + bool contains = FALSE; + for (;;) { + if ( c->rect.intersects( irect ) ) { + contains = c->rect.contains( irect ); + break; + } + + c = c->n; + if ( !c ) { + appendItemContainer(); + c = d->lastContainer; + } + } + + if ( !c ) { +#if defined(QT_CHECK_RANGE) + qWarning( "QIconViewItem::updateItemContainer(): No fitting container found!" ); +#endif + return; + } + + if (item->isVisible()) { + c->items.append( item ); + item->d->container1 = c; + + if ( !contains ) { + c = c->n; + if ( !c ) { + appendItemContainer(); + c = d->lastContainer; + } + c->items.append( item ); + item->d->container2 = c; + } + } + if ( contentsWidth() < irect.right() || contentsHeight() < irect.bottom() ) + resizeContents( QMAX( contentsWidth(), irect.right() ), QMAX( contentsHeight(), irect.bottom() ) ); +} + +/*! + \internal + Appends a new rect area to the internal data structure of the items. +*/ + +void QIconView::appendItemContainer() +{ + QSize s; + // #### We have to find out which value is best here + if ( d->arrangement == LeftToRight ) + s = QSize( INT_MAX - 1, RECT_EXTENSION ); + else + s = QSize( RECT_EXTENSION, INT_MAX - 1 ); + + if ( !d->firstContainer ) { + d->firstContainer = new QIconViewPrivate::ItemContainer( 0, 0, QRect( QPoint( 0, 0 ), s ) ); + d->lastContainer = d->firstContainer; + } else { + if ( d->arrangement == LeftToRight ) + d->lastContainer = new QIconViewPrivate::ItemContainer( + d->lastContainer, 0, QRect( d->lastContainer->rect.bottomLeft(), s ) ); + else + d->lastContainer = new QIconViewPrivate::ItemContainer( + d->lastContainer, 0, QRect( d->lastContainer->rect.topRight(), s ) ); + } +} + +/*! \internal + + Rebuilds the whole internal data structure. This is done when it's + likely that most/all items change their geometry (e.g. in + arrangeItemsInGrid()), because calling this is then more efficient + than calling updateItemContainer() for each item. +*/ + +void QIconView::rebuildContainers() +{ + QIconViewPrivate::ItemContainer *c = d->firstContainer, *tmpc; + while ( c ) { + tmpc = c->n; + delete c; + c = tmpc; + } + d->firstContainer = d->lastContainer = 0; + + QIconViewItem *item = d->firstItem; + appendItemContainer(); + c = d->lastContainer; + while ( item ) { + if (item->isVisible()) { + if ( c->rect.contains( item->rect() ) ) { + item->d->container1 = c; + item->d->container2 = 0; + c->items.append( item ); + item = item->next; + } else if ( c->rect.intersects( item->rect() ) ) { + item->d->container1 = c; + c->items.append( item ); + c = c->n; + if ( !c ) { + appendItemContainer(); + c = d->lastContainer; + } + c->items.append( item ); + item->d->container2 = c; + item = item->next; + c = c->p; + } else { + if ( d->arrangement == LeftToRight ) { + if ( item->y() < c->rect.y() && c->p ) { + c = c->p; + continue; + } + } else { + if ( item->x() < c->rect.x() && c->p ) { + c = c->p; + continue; + } + } + + c = c->n; + if ( !c ) { + appendItemContainer(); + c = d->lastContainer; + } + } + } + else { + // Skip this hidden item + item = item->next; + } + } +} + +/*! + \internal +*/ + +void QIconView::movedContents( int, int ) +{ + if ( d->drawDragShapes ) { + drawDragShapes( d->oldDragPos ); + d->oldDragPos = QPoint( -1, -1 ); + } +} + +void QIconView::handleItemChange( QIconViewItem *old, bool shift, + bool control, bool homeend ) +{ + if ( d->selectionMode == Single ) { + bool block = signalsBlocked(); + blockSignals( TRUE ); + if ( old ) + old->setSelected( FALSE ); + blockSignals( block ); + d->currentItem->setSelected( TRUE, TRUE ); + } else if ( d->selectionMode == Extended ) { + if ( shift ) { + if ( !d->selectAnchor ) { + if ( old && !old->selected && old->isSelectable() ) { + old->selected = TRUE; + repaintItem( old ); + } + d->currentItem->setSelected( TRUE, TRUE ); + } else { + QIconViewItem *from = d->selectAnchor, *to = d->currentItem; + if ( !from || !to ) + return; + + // checking if it's downwards and if we span rows + bool downwards = FALSE; + bool spanning = FALSE; + if ( d->arrangement == LeftToRight) { + if ( from->rect().center().y() < to->rect().center().y() ) + downwards = TRUE; + } else { + if ( from->rect().center().x() < to->rect().center().x() ) + downwards = TRUE; + } + + QRect fr = from->rect(); + QRect tr = to->rect(); + if ( d->arrangement == LeftToRight ) { + fr.moveTopLeft( QPoint( tr.x(), fr.y() ) ); + if ( !tr.intersects( fr ) ) + spanning = TRUE; + } else { + fr.moveTopLeft( QPoint( fr.x(), tr.y() ) ); + if ( !tr.intersects( fr ) ) + spanning = TRUE; + } + + + // finding the rectangles + QRect topRect, bottomRect, midRect; + if ( !spanning ) { + midRect = from->rect().unite( to->rect() ); + } else { + if ( downwards ) { + topRect = from->rect(); + bottomRect = to->rect(); + } else { + topRect = to->rect(); + bottomRect = from->rect(); + } + if ( d->arrangement == LeftToRight ) { + topRect.setRight( contentsWidth() ); + bottomRect.setLeft( 0 ); + midRect.setRect( 0, topRect.bottom(), + contentsWidth(), + bottomRect.top() - topRect.bottom() ); + } else { + topRect.setBottom( contentsHeight() ); + bottomRect.setTop( 0 ); + midRect.setRect( topRect.right(), + 0, + bottomRect.left() - topRect.right(), + contentsHeight() ); + } + } + + // finding contained items and selecting them + QIconViewItem *item = 0; + bool changed = FALSE; + bool midValid = midRect.isValid(); + bool topValid = topRect.isValid(); + bool bottomValid = bottomRect.isValid(); + QRect selectedRect, unselectedRect; + for ( item = d->firstItem; item; item = item->next ) { + bool contained = FALSE; + QPoint itemCenter = item->rect().center(); + if ( midValid && midRect.contains( itemCenter ) ) + contained = TRUE; + if ( !contained && topValid && topRect.contains( itemCenter ) ) + contained = TRUE; + if ( !contained && bottomValid && bottomRect.contains( itemCenter ) ) + contained = TRUE; + + if ( contained ) { + if ( !item->selected && item->isSelectable() ) { + changed = TRUE; + item->selected = TRUE; + selectedRect = selectedRect.unite( item->rect() ); + } + } else if ( item->selected && !control ) { + item->selected = FALSE; + unselectedRect = unselectedRect.unite( item->rect() ); + changed = TRUE; + } + } + + QRect viewRect( contentsX(), contentsY(), + visibleWidth(), visibleHeight() ); + + if ( viewRect.intersects( selectedRect ) ) { + if ( homeend ) + QScrollView::updateContents( viewRect.intersect( selectedRect ) ); + else + repaintContents( viewRect.intersect( selectedRect ) ); + } + if ( viewRect.intersects( unselectedRect ) ) { + if ( homeend ) + QScrollView::updateContents( viewRect.intersect( unselectedRect ) ); + else + repaintContents( viewRect.intersect( unselectedRect ) ); + } + + if ( changed ) + emit selectionChanged(); + } + } else if ( !control ) { + blockSignals( TRUE ); + selectAll( FALSE ); + blockSignals( FALSE ); + d->currentItem->setSelected( TRUE, TRUE ); + } + } else { + if ( shift ) + d->currentItem->setSelected( !d->currentItem->isSelected(), TRUE ); + } +} + +QBitmap QIconView::mask( QPixmap *pix ) const +{ + QBitmap m; + if ( d->maskCache.find( QString::number( pix->serialNumber() ), m ) ) + return m; + m = pix->createHeuristicMask(); + d->maskCache.insert( QString::number( pix->serialNumber() ), m ); + return m; +} + +/*! + \reimp + \internal + + (Implemented to get rid of a compiler warning.) +*/ +void QIconView::drawContents( QPainter * ) +{ +} + +/*! + \reimp +*/ +void QIconView::windowActivationChange( bool oldActive ) +{ + if ( oldActive && d->scrollTimer ) + d->scrollTimer->stop(); + + if ( !isVisible() ) + return; + + if ( palette().active() == palette().inactive() ) + return; + + repaintSelectedItems(); +} + +/*! + Returns TRUE if an iconview item is being renamed; otherwise + returns FALSE. +*/ + +bool QIconView::isRenaming() const +{ +#ifndef QT_NO_TEXTEDIT + return d->renamingItem && d->renamingItem->renameBox; +#else + return FALSE; +#endif +} + +int QIconView::visibleWidthSB() const +{ + if ( vScrollBarMode() != Auto ) + return visibleWidth(); + + int offset = verticalScrollBar()->isVisible() ? 0 + : style().pixelMetric( QStyle::PM_ScrollBarExtent, verticalScrollBar() ); + return QMAX( 0, visibleWidth() - offset ); +} + +int QIconView::visibleHeightSB() const +{ + if ( hScrollBarMode() != Auto ) + return visibleHeight(); + + int offset = horizontalScrollBar()->isVisible() ? 0 + : style().pixelMetric( QStyle::PM_ScrollBarExtent, horizontalScrollBar() ); + return QMAX( 0, visibleHeight() - offset ); +} + +#endif // QT_NO_ICONVIEW |