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Diffstat (limited to 'examples/textedit/textedit.cpp')
| -rw-r--r-- | examples/textedit/textedit.cpp | 455 |
1 files changed, 455 insertions, 0 deletions
diff --git a/examples/textedit/textedit.cpp b/examples/textedit/textedit.cpp new file mode 100644 index 000000000..a64c9d94c --- /dev/null +++ b/examples/textedit/textedit.cpp @@ -0,0 +1,455 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 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 "textedit.h" + +#include <qtextedit.h> +#include <qaction.h> +#include <qmenubar.h> +#include <qpopupmenu.h> +#include <qtoolbar.h> +#include <qtabwidget.h> +#include <qapplication.h> +#include <qfontdatabase.h> +#include <qcombobox.h> +#include <qlineedit.h> +#include <qfileinfo.h> +#include <qfile.h> +#include <qfiledialog.h> +#include <qprinter.h> +#include <qpaintdevicemetrics.h> +#include <qsimplerichtext.h> +#include <qcolordialog.h> +#include <qpainter.h> + +TextEdit::TextEdit( TQWidget *parent, const char *name ) + : TQMainWindow( parent, name ) +{ + setupFileActions(); + setupEditActions(); + setupTextActions(); + + tabWidget = new TQTabWidget( this ); + connect( tabWidget, SIGNAL( currentChanged( TQWidget * ) ), + this, SLOT( editorChanged( TQWidget * ) ) ); + setCentralWidget( tabWidget ); + + if ( qApp->argc() == 1 ) { + load( "example.html" ); + } else { + for ( int i = 1; i < qApp->argc(); ++i ) + load( qApp->argv()[ i ] ); + } +} + +void TextEdit::setupFileActions() +{ + TQToolBar *tb = new TQToolBar( this ); + tb->setLabel( "File Actions" ); + TQPopupMenu *menu = new TQPopupMenu( this ); + menuBar()->insertItem( tr( "&File" ), menu ); + + TQAction *a; + a = new TQAction( TQPixmap::fromMimeSource( "filenew.xpm" ), tr( "&New..." ), CTRL + Key_N, this, "fileNew" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileNew() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new TQAction( TQPixmap::fromMimeSource( "fileopen.xpm" ), tr( "&Open..." ), CTRL + Key_O, this, "fileOpen" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileOpen() ) ); + a->addTo( tb ); + a->addTo( menu ); + menu->insertSeparator(); + a = new TQAction( TQPixmap::fromMimeSource( "filesave.xpm" ), tr( "&Save..." ), CTRL + Key_S, this, "fileSave" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileSave() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new TQAction( tr( "Save &As..." ), 0, this, "fileSaveAs" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileSaveAs() ) ); + a->addTo( menu ); + menu->insertSeparator(); + a = new TQAction( TQPixmap::fromMimeSource( "fileprint.xpm" ), tr( "&Print..." ), CTRL + Key_P, this, "filePrint" ); + connect( a, SIGNAL( activated() ), this, SLOT( filePrint() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new TQAction( tr( "&Close" ), 0, this, "fileClose" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileClose() ) ); + a->addTo( menu ); + a = new TQAction( tr( "E&xit" ), 0, this, "fileExit" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileExit() ) ); + a->addTo( menu ); +} + +void TextEdit::setupEditActions() +{ + TQToolBar *tb = new TQToolBar( this ); + tb->setLabel( "Edit Actions" ); + TQPopupMenu *menu = new TQPopupMenu( this ); + menuBar()->insertItem( tr( "&Edit" ), menu ); + + TQAction *a; + a = new TQAction( TQPixmap::fromMimeSource( "editundo.xpm" ), tr( "&Undo" ), CTRL + Key_Z, this, "editUndo" ); + connect( a, SIGNAL( activated() ), this, SLOT( editUndo() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new TQAction( TQPixmap::fromMimeSource( "editredo.xpm" ), tr( "&Redo" ), CTRL + Key_Y, this, "editRedo" ); + connect( a, SIGNAL( activated() ), this, SLOT( editRedo() ) ); + a->addTo( tb ); + a->addTo( menu ); + menu->insertSeparator(); + a = new TQAction( TQPixmap::fromMimeSource( "editcopy.xpm" ), tr( "&Copy" ), CTRL + Key_C, this, "editCopy" ); + connect( a, SIGNAL( activated() ), this, SLOT( editCopy() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new TQAction( TQPixmap::fromMimeSource( "editcut.xpm" ), tr( "Cu&t" ), CTRL + Key_X, this, "editCut" ); + connect( a, SIGNAL( activated() ), this, SLOT( editCut() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new TQAction( TQPixmap::fromMimeSource( "editpaste.xpm" ), tr( "&Paste" ), CTRL + Key_V, this, "editPaste" ); + connect( a, SIGNAL( activated() ), this, SLOT( editPaste() ) ); + a->addTo( tb ); + a->addTo( menu ); +} + +void TextEdit::setupTextActions() +{ + TQToolBar *tb = new TQToolBar( this ); + tb->setLabel( "Format Actions" ); + TQPopupMenu *menu = new TQPopupMenu( this ); + menuBar()->insertItem( tr( "F&ormat" ), menu ); + + comboFont = new TQComboBox( TRUE, tb ); + TQFontDatabase db; + comboFont->insertStringList( db.families() ); + connect( comboFont, SIGNAL( activated( const TQString & ) ), + this, SLOT( textFamily( const TQString & ) ) ); + comboFont->lineEdit()->setText( TQApplication::font().family() ); + + comboSize = new TQComboBox( TRUE, tb ); + TQValueList<int> sizes = db.standardSizes(); + TQValueList<int>::Iterator it = sizes.begin(); + for ( ; it != sizes.end(); ++it ) + comboSize->insertItem( TQString::number( *it ) ); + connect( comboSize, SIGNAL( activated( const TQString & ) ), + this, SLOT( textSize( const TQString & ) ) ); + comboSize->lineEdit()->setText( TQString::number( TQApplication::font().pointSize() ) ); + + actionTextBold = new TQAction( TQPixmap::fromMimeSource( "textbold.xpm" ), tr( "&Bold" ), CTRL + Key_B, this, "textBold" ); + connect( actionTextBold, SIGNAL( activated() ), this, SLOT( textBold() ) ); + actionTextBold->addTo( tb ); + actionTextBold->addTo( menu ); + actionTextBold->setToggleAction( TRUE ); + actionTextItalic = new TQAction( TQPixmap::fromMimeSource( "textitalic.xpm" ), tr( "&Italic" ), CTRL + Key_I, this, "textItalic" ); + connect( actionTextItalic, SIGNAL( activated() ), this, SLOT( textItalic() ) ); + actionTextItalic->addTo( tb ); + actionTextItalic->addTo( menu ); + actionTextItalic->setToggleAction( TRUE ); + actionTextUnderline = new TQAction( TQPixmap::fromMimeSource( "textunder.xpm" ), tr( "&Underline" ), CTRL + Key_U, this, "textUnderline" ); + connect( actionTextUnderline, SIGNAL( activated() ), this, SLOT( textUnderline() ) ); + actionTextUnderline->addTo( tb ); + actionTextUnderline->addTo( menu ); + actionTextUnderline->setToggleAction( TRUE ); + menu->insertSeparator(); + + TQActionGroup *grp = new TQActionGroup( this ); + connect( grp, SIGNAL( selected( TQAction* ) ), this, SLOT( textAlign( TQAction* ) ) ); + + actionAlignLeft = new TQAction( TQPixmap::fromMimeSource( "textleft.xpm" ), tr( "&Left" ), CTRL + Key_L, grp, "textLeft" ); + actionAlignLeft->setToggleAction( TRUE ); + actionAlignCenter = new TQAction( TQPixmap::fromMimeSource( "textcenter.xpm" ), tr( "C&enter" ), CTRL + Key_E, grp, "textCenter" ); + actionAlignCenter->setToggleAction( TRUE ); + actionAlignRight = new TQAction( TQPixmap::fromMimeSource( "textright.xpm" ), tr( "&Right" ), CTRL + Key_R, grp, "textRight" ); + actionAlignRight->setToggleAction( TRUE ); + actionAlignJustify = new TQAction( TQPixmap::fromMimeSource( "textjustify.xpm" ), tr( "&Justify" ), CTRL + Key_J, grp, "textjustify" ); + actionAlignJustify->setToggleAction( TRUE ); + + grp->addTo( tb ); + grp->addTo( menu ); + + menu->insertSeparator(); + + TQPixmap pix( 16, 16 ); + pix.fill( black ); + actionTextColor = new TQAction( pix, tr( "&Color..." ), 0, this, "textColor" ); + connect( actionTextColor, SIGNAL( activated() ), this, SLOT( textColor() ) ); + actionTextColor->addTo( tb ); + actionTextColor->addTo( menu ); +} + +void TextEdit::load( const TQString &f ) +{ + if ( !TQFile::exists( f ) ) + return; + TQTextEdit *edit = new TQTextEdit( tabWidget ); + edit->setTextFormat( RichText ); + doConnections( edit ); + tabWidget->addTab( edit, TQFileInfo( f ).fileName() ); + TQFile file( f ); + if ( !file.open( IO_ReadOnly ) ) + return; + TQTextStream ts( &file ); + TQString txt = ts.read(); + if ( !TQStyleSheet::mightBeRichText( txt ) ) + txt = TQStyleSheet::convertFromPlainText( txt, TQStyleSheetItem::WhiteSpacePre ); + edit->setText( txt ); + tabWidget->showPage( edit ); + edit->viewport()->setFocus(); + filenames.replace( edit, f ); +} + +TQTextEdit *TextEdit::currentEditor() const +{ + if ( tabWidget->currentPage() && + tabWidget->currentPage()->inherits( "TQTextEdit" ) ) + return (TQTextEdit*)tabWidget->currentPage(); + return 0; +} + +void TextEdit::doConnections( TQTextEdit *e ) +{ + connect( e, SIGNAL( currentFontChanged( const TQFont & ) ), + this, SLOT( fontChanged( const TQFont & ) ) ); + connect( e, SIGNAL( currentColorChanged( const TQColor & ) ), + this, SLOT( colorChanged( const TQColor & ) ) ); + connect( e, SIGNAL( currentAlignmentChanged( int ) ), + this, SLOT( alignmentChanged( int ) ) ); +} + +void TextEdit::fileNew() +{ + TQTextEdit *edit = new TQTextEdit( tabWidget ); + edit->setTextFormat( RichText ); + doConnections( edit ); + tabWidget->addTab( edit, tr( "noname" ) ); + tabWidget->showPage( edit ); + edit->viewport()->setFocus(); +} + +void TextEdit::fileOpen() +{ + TQString fn = TQFileDialog::getOpenFileName( TQString::null, tr( "HTML-Files (*.htm *.html);;All Files (*)" ), this ); + if ( !fn.isEmpty() ) + load( fn ); +} + +void TextEdit::fileSave() +{ + if ( !currentEditor() ) + return; + TQString fn; + if ( filenames.find( currentEditor() ) == filenames.end() ) { + fileSaveAs(); + } else { + TQFile file( *filenames.find( currentEditor() ) ); + if ( !file.open( IO_WriteOnly ) ) + return; + TQTextStream ts( &file ); + ts << currentEditor()->text(); + } +} + +void TextEdit::fileSaveAs() +{ + if ( !currentEditor() ) + return; + TQString fn = TQFileDialog::getSaveFileName( TQString::null, tr( "HTML-Files (*.htm *.html);;All Files (*)" ), this ); + if ( !fn.isEmpty() ) { + filenames.replace( currentEditor(), fn ); + fileSave(); + tabWidget->setTabLabel( currentEditor(), TQFileInfo( fn ).fileName() ); + } +} + +void TextEdit::filePrint() +{ + if ( !currentEditor() ) + return; +#ifndef QT_NO_PRINTER + TQPrinter printer( TQPrinter::HighResolution ); + printer.setFullPage(TRUE); + if ( printer.setup( this ) ) { + TQPainter p( &printer ); + // Check that there is a valid device to print to. + if ( !p.device() ) return; + TQPaintDeviceMetrics metrics( p.device() ); + int dpiy = metrics.logicalDpiY(); + int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins + TQRect view( margin, margin, metrics.width() - 2*margin, metrics.height() - 2*margin ); + TQFont font( currentEditor()->TQWidget::font() ); + font.setPointSize( 10 ); // we define 10pt to be a nice base size for printing + + TQSimpleRichText richText( currentEditor()->text(), font, + currentEditor()->context(), + currentEditor()->styleSheet(), + currentEditor()->mimeSourceFactory(), + view.height() ); + richText.setWidth( &p, view.width() ); + int page = 1; + do { + richText.draw( &p, margin, margin, view, colorGroup() ); + view.moveBy( 0, view.height() ); + p.translate( 0 , -view.height() ); + p.setFont( font ); + p.drawText( view.right() - p.fontMetrics().width( TQString::number( page ) ), + view.bottom() + p.fontMetrics().ascent() + 5, TQString::number( page ) ); + if ( view.top() - margin >= richText.height() ) + break; + printer.newPage(); + page++; + } while (TRUE); + } +#endif +} + +void TextEdit::fileClose() +{ + delete currentEditor(); + if ( currentEditor() ) + currentEditor()->viewport()->setFocus(); +} + +void TextEdit::fileExit() +{ + qApp->tquit(); +} + +void TextEdit::editUndo() +{ + if ( !currentEditor() ) + return; + currentEditor()->undo(); +} + +void TextEdit::editRedo() +{ + if ( !currentEditor() ) + return; + currentEditor()->redo(); +} + +void TextEdit::editCut() +{ + if ( !currentEditor() ) + return; + currentEditor()->cut(); +} + +void TextEdit::editCopy() +{ + if ( !currentEditor() ) + return; + currentEditor()->copy(); +} + +void TextEdit::editPaste() +{ + if ( !currentEditor() ) + return; + currentEditor()->paste(); +} + +void TextEdit::textBold() +{ + if ( !currentEditor() ) + return; + currentEditor()->setBold( actionTextBold->isOn() ); +} + +void TextEdit::textUnderline() +{ + if ( !currentEditor() ) + return; + currentEditor()->setUnderline( actionTextUnderline->isOn() ); +} + +void TextEdit::textItalic() +{ + if ( !currentEditor() ) + return; + currentEditor()->setItalic( actionTextItalic->isOn() ); +} + +void TextEdit::textFamily( const TQString &f ) +{ + if ( !currentEditor() ) + return; + currentEditor()->setFamily( f ); + currentEditor()->viewport()->setFocus(); +} + +void TextEdit::textSize( const TQString &p ) +{ + if ( !currentEditor() ) + return; + currentEditor()->setPointSize( p.toInt() ); + currentEditor()->viewport()->setFocus(); +} + +void TextEdit::textColor() +{ + if ( !currentEditor() ) + return; + TQColor col = TQColorDialog::getColor( currentEditor()->color(), this ); + if ( !col.isValid() ) + return; + currentEditor()->setColor( col ); + TQPixmap pix( 16, 16 ); + pix.fill( black ); + actionTextColor->setIconSet( pix ); +} + +void TextEdit::textAlign( TQAction *a ) +{ + if ( !currentEditor() ) + return; + if ( a == actionAlignLeft ) + currentEditor()->setAlignment( AlignLeft ); + else if ( a == actionAlignCenter ) + currentEditor()->setAlignment( AlignHCenter ); + else if ( a == actionAlignRight ) + currentEditor()->setAlignment( AlignRight ); + else if ( a == actionAlignJustify ) + currentEditor()->setAlignment( AlignJustify ); +} + +void TextEdit::fontChanged( const TQFont &f ) +{ + comboFont->lineEdit()->setText( f.family() ); + comboSize->lineEdit()->setText( TQString::number( f.pointSize() ) ); + actionTextBold->setOn( f.bold() ); + actionTextItalic->setOn( f.italic() ); + actionTextUnderline->setOn( f.underline() ); +} + +void TextEdit::colorChanged( const TQColor &c ) +{ + TQPixmap pix( 16, 16 ); + pix.fill( c ); + actionTextColor->setIconSet( pix ); +} + +void TextEdit::alignmentChanged( int a ) +{ + if ( ( a == AlignAuto ) || ( a & AlignLeft )) + actionAlignLeft->setOn( TRUE ); + else if ( ( a & AlignHCenter ) ) + actionAlignCenter->setOn( TRUE ); + else if ( ( a & AlignRight ) ) + actionAlignRight->setOn( TRUE ); + else if ( ( a & AlignJustify ) ) + actionAlignJustify->setOn( TRUE ); +} + +void TextEdit::editorChanged( TQWidget * ) +{ + if ( !currentEditor() ) + return; + fontChanged( currentEditor()->currentFont() ); + colorChanged( currentEditor()->color() ); + alignmentChanged( currentEditor()->alignment() ); +} |