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Diffstat (limited to 'examples/customlayout/border.cpp')
| -rw-r--r-- | examples/customlayout/border.cpp | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/examples/customlayout/border.cpp b/examples/customlayout/border.cpp new file mode 100644 index 000000000..533b3b635 --- /dev/null +++ b/examples/customlayout/border.cpp @@ -0,0 +1,226 @@ +/**************************************************************************** +** +** Implementing your own layout: flow example +** +** Copyright (C) 1996-2008 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for TQt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include "border.h" + +class BorderLayoutIterator : public TQGLayoutIterator +{ +public: + BorderLayoutIterator( const TQPtrList<BorderLayout::BorderLayoutStruct> *l ) + : idx( 0 ) , list( (TQPtrList<BorderLayout::BorderLayoutStruct>*)l ) + {} + + uint count() const; + TQLayoutItem *current(); + BorderLayout::BorderLayoutStruct *currentStruct(); + void toFirst(); + TQLayoutItem *next(); + TQLayoutItem *takeCurrent(); + BorderLayoutIterator &operator++(); + +private: + int idx; + TQPtrList<BorderLayout::BorderLayoutStruct> *list; + +}; + +uint BorderLayoutIterator::count() const +{ + return list->count(); +} + +TQLayoutItem *BorderLayoutIterator::current() +{ + return idx < (int)count() ? list->at( idx )->item : 0; +} + +BorderLayout::BorderLayoutStruct *BorderLayoutIterator::currentStruct() +{ + return idx < (int)count() ? list->at( idx ) : 0; +} + +void BorderLayoutIterator::toFirst() +{ + idx = 0; +} + +TQLayoutItem *BorderLayoutIterator::next() +{ + idx++; + return current(); +} + +TQLayoutItem *BorderLayoutIterator::takeCurrent() +{ + BorderLayout::BorderLayoutStruct *b + = idx < int( list->count() ) ? list->take( idx ) : 0; + TQLayoutItem *item = b ? b->item : 0; + delete b; + return item; +} + +BorderLayoutIterator &BorderLayoutIterator::operator++() +{ + next(); + return *this; +} + +BorderLayout::~BorderLayout() +{ + deleteAllItems(); +} + + +void BorderLayout::addItem( TQLayoutItem *item ) +{ + add( item, West ); +} + +void BorderLayout::addWidget( TQWidget *widget, Position pos ) +{ + add( new BorderWidgetItem( widget ), pos ); +} + +void BorderLayout::add( TQLayoutItem *item, Position pos ) +{ + list.append( new BorderLayoutStruct( item, pos ) ); + sizeDirty = TRUE; msizeDirty = TRUE; + calcSize( SizeHint ); calcSize( Minimum ); +} + +bool BorderLayout::hasHeightForWidth() const +{ + return FALSE; +} + +TQSize BorderLayout::sizeHint() const +{ + return cached; +} + +TQSize BorderLayout::minimumSize() const +{ + return cached; +} + +TQSizePolicy::ExpandData BorderLayout::expanding() const + +{ + return TQSizePolicy::BothDirections; +} + +TQLayoutIterator BorderLayout::iterator() +{ + return TQLayoutIterator( new BorderLayoutIterator( &list ) ); +} + +void BorderLayout::setGeometry( const TQRect &rct ) +{ + TQLayout::setGeometry( rct ); + doLayout( rct ); +} + +void BorderLayout::doLayout( const TQRect &rct, bool /*testonly*/ ) +{ + int ew = 0, ww = 0, nh = 0, sh = 0; + int h = 0; + + BorderLayoutIterator it( &list ); + BorderLayoutStruct *o; + BorderLayoutStruct *center = 0; + while ( ( o = it.currentStruct() ) != 0 ) { + ++it; + + if ( o->pos == North ) { + o->item->setGeometry( TQRect( rct.x(), nh, rct.width(), o->item->sizeHint().height() ) ); + nh += o->item->geometry().height() + spacing(); + } + if ( o->pos == South ) { + o->item->setGeometry( TQRect( o->item->geometry().x(), o->item->geometry().y(), + rct.width(), o->item->sizeHint().height() ) ); + sh += o->item->geometry().height() + spacing(); + o->item->setGeometry( TQRect( rct.x(), rct.y() + rct.height() - sh + spacing(), + o->item->geometry().width(), o->item->geometry().height() ) ); + } + if ( o->pos == Center ) + center = o; + } + + h = rct.height() - nh - sh; + + it.toFirst(); + while ( ( o = it.currentStruct() ) != 0 ) { + ++it; + + if ( o->pos == West ) { + o->item->setGeometry( TQRect( rct.x() + ww, nh, o->item->sizeHint().width(), h ) ); + ww += o->item->geometry().width() + spacing(); + } + if ( o->pos == East ) { + o->item->setGeometry( TQRect( o->item->geometry().x(), o->item->geometry().y(), + o->item->sizeHint().width(), h ) ); + ew += o->item->geometry().width() + spacing(); + o->item->setGeometry( TQRect( rct.x() + rct.width() - ew + spacing(), nh, + o->item->geometry().width(), o->item->geometry().height() ) ); + } + } + + if ( center ) + center->item->setGeometry( TQRect( ww, nh, rct.width() - ew - ww, h ) ); +} + +void BorderLayout::calcSize( SizeType st ) +{ + if ( ( st == Minimum && !msizeDirty ) || + ( st == SizeHint && !sizeDirty ) ) + return; + + int w = 0, h = 0; + + BorderLayoutIterator it( &list ); + BorderLayoutStruct *o; + while ( ( o = it.currentStruct() ) != 0 ) { + ++it; + if ( o->pos == North || + o->pos == South ) { + if ( st == Minimum ) + h += o->item->minimumSize().height(); + else + h += o->item->sizeHint().height(); + } + else if ( o->pos == West || + o->pos == East ) { + if ( st == Minimum ) + w += o->item->minimumSize().width(); + else + w += o->item->sizeHint().width(); + } else { + if ( st == Minimum ) { + h += o->item->minimumSize().height(); + w += o->item->minimumSize().width(); + } + else { + h += o->item->sizeHint().height(); + w += o->item->sizeHint().width(); + } + } + } + + if ( st == Minimum ) { + msizeDirty = FALSE; + mcached = TQSize( w, h ); + } else { + sizeDirty = FALSE; + cached = TQSize( w, h ); + } + + return; +} |