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Diffstat (limited to 'examples/action/application.cpp')
-rw-r--r-- | examples/action/application.cpp | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/examples/action/application.cpp b/examples/action/application.cpp new file mode 100644 index 000000000..23a3a8755 --- /dev/null +++ b/examples/action/application.cpp @@ -0,0 +1,306 @@ +/**************************************************************************** +** +** 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 "application.h" + +#include <qimage.h> +#include <qpixmap.h> +#include <qtoolbar.h> +#include <qtoolbutton.h> +#include <qpopupmenu.h> +#include <qmenubar.h> +#include <qtextedit.h> +#include <qfile.h> +#include <qfiledialog.h> +#include <qstatusbar.h> +#include <qmessagebox.h> +#include <qprinter.h> +#include <qapplication.h> +#include <qaccel.h> +#include <qtextstream.h> +#include <qpainter.h> +#include <qpaintdevicemetrics.h> +#include <qwhatsthis.h> +#include <qaction.h> +#include <qsimplerichtext.h> + +#include "filesave.xpm" +#include "fileopen.xpm" +#include "fileprint.xpm" + + +ApplicationWindow::ApplicationWindow() + : TQMainWindow( 0, "example application main window", WDestructiveClose ) +{ + printer = new TQPrinter( TQPrinter::HighResolution ); + + TQAction * fileNewAction; + TQAction * fileOpenAction; + TQAction * fileSaveAction, * fileSaveAsAction, * filePrintAction; + TQAction * fileCloseAction, * fileQuitAction; + + fileNewAction = new TQAction( "&New", CTRL+Key_N, this, "new" ); + connect( fileNewAction, SIGNAL( activated() ) , this, + SLOT( newDoc() ) ); + + fileOpenAction = new TQAction( TQPixmap( fileopen ), "&Open...", + CTRL+Key_O, this, "open" ); + connect( fileOpenAction, SIGNAL( activated() ) , this, SLOT( choose() ) ); + + const char * fileOpenText = "<p><img source=\"fileopen\"> " + "Click this button to open a <em>new file</em>. <br>" + "You can also select the <b>Open</b> command " + "from the <b>File</b> menu.</p>"; + TQMimeSourceFactory::defaultFactory()->setPixmap( "fileopen", + fileOpenAction->iconSet().pixmap() ); + fileOpenAction->setWhatsThis( fileOpenText ); + + fileSaveAction = new TQAction( TQPixmap( filesave ), + "&Save", CTRL+Key_S, this, "save" ); + connect( fileSaveAction, SIGNAL( activated() ) , this, SLOT( save() ) ); + + const char * fileSaveText = "<p>Click this button to save the file you " + "are editing. You will be prompted for a file name.\n" + "You can also select the <b>Save</b> command " + "from the <b>File</b> menu.</p>"; + fileSaveAction->setWhatsThis( fileSaveText ); + + fileSaveAsAction = new TQAction( "Save File As", "Save &As...", 0, this, + "save as" ); + connect( fileSaveAsAction, SIGNAL( activated() ) , this, + SLOT( saveAs() ) ); + fileSaveAsAction->setWhatsThis( fileSaveText ); + + filePrintAction = new TQAction( "Print File", TQPixmap( fileprint ), + "&Print...", CTRL+Key_P, this, "print" ); + connect( filePrintAction, SIGNAL( activated() ) , this, + SLOT( print() ) ); + + const char * filePrintText = "Click this button to print the file you " + "are editing.\n You can also select the Print " + "command from the File menu."; + filePrintAction->setWhatsThis( filePrintText ); + + fileCloseAction = new TQAction( "Close", "&Close", CTRL+Key_W, this, + "close" ); + connect( fileCloseAction, SIGNAL( activated() ) , this, + SLOT( close() ) ); + + fileQuitAction = new TQAction( "Quit", "&Quit", CTRL+Key_Q, this, + "tquit" ); + connect( fileQuitAction, SIGNAL( activated() ) , qApp, + SLOT( closeAllWindows() ) ); + + // populate a tool bar with some actions + + TQToolBar * fileTools = new TQToolBar( this, "file operations" ); + fileTools->setLabel( "File Operations" ); + fileOpenAction->addTo( fileTools ); + fileSaveAction->addTo( fileTools ); + filePrintAction->addTo( fileTools ); + (void)TQWhatsThis::whatsThisButton( fileTools ); + + + // populate a menu with all actions + + TQPopupMenu * file = new TQPopupMenu( this ); + menuBar()->insertItem( "&File", file ); + fileNewAction->addTo( file ); + fileOpenAction->addTo( file ); + fileSaveAction->addTo( file ); + fileSaveAsAction->addTo( file ); + file->insertSeparator(); + filePrintAction->addTo( file ); + file->insertSeparator(); + fileCloseAction->addTo( file ); + fileQuitAction->addTo( file ); + + + menuBar()->insertSeparator(); + + // add a help menu + + TQPopupMenu * help = new TQPopupMenu( this ); + menuBar()->insertItem( "&Help", help ); + help->insertItem( "&About", this, SLOT(about()), Key_F1 ); + help->insertItem( "About &TQt", this, SLOT(aboutTQt()) ); + help->insertSeparator(); + help->insertItem( "What's &This", this, SLOT(whatsThis()), + SHIFT+Key_F1 ); + + + // create and define the central widget + + e = new TQTextEdit( this, "editor" ); + e->setFocus(); + setCentralWidget( e ); + statusBar()->message( "Ready", 2000 ); + + resize( 450, 600 ); +} + + +ApplicationWindow::~ApplicationWindow() +{ + delete printer; +} + + + +void ApplicationWindow::newDoc() +{ + ApplicationWindow *ed = new ApplicationWindow; + ed->show(); +} + +void ApplicationWindow::choose() +{ + TQString fn = TQFileDialog::getOpenFileName( TQString::null, TQString::null, + this); + if ( !fn.isEmpty() ) + load( fn ); + else + statusBar()->message( "Loading aborted", 2000 ); +} + + +void ApplicationWindow::load( const TQString &fileName ) +{ + TQFile f( fileName ); + if ( !f.open( IO_ReadOnly ) ) + return; + + TQTextStream ts( &f ); + e->setText( ts.read() ); + e->setModified( FALSE ); + setCaption( fileName ); + statusBar()->message( "Loaded document " + fileName, 2000 ); +} + + +void ApplicationWindow::save() +{ + if ( filename.isEmpty() ) { + saveAs(); + return; + } + + TQString text = e->text(); + TQFile f( filename ); + if ( !f.open( IO_WriteOnly ) ) { + statusBar()->message( TQString("Could not write to %1").arg(filename), + 2000 ); + return; + } + + TQTextStream t( &f ); + t << text; + f.close(); + + e->setModified( FALSE ); + + setCaption( filename ); + + statusBar()->message( TQString( "File %1 saved" ).arg( filename ), 2000 ); +} + + +void ApplicationWindow::saveAs() +{ + TQString fn = TQFileDialog::getSaveFileName( TQString::null, TQString::null, + this ); + if ( !fn.isEmpty() ) { + filename = fn; + save(); + } else { + statusBar()->message( "Saving aborted", 2000 ); + } +} + + +void ApplicationWindow::print() +{ + printer->setFullPage( TRUE ); + if ( printer->setup(this) ) { // printer dialog + statusBar()->message( "Printing..." ); + TQPainter p; + if( !p.begin( printer ) ) { // paint on printer + statusBar()->message( "Printing aborted", 2000 ); + 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 ); + TQSimpleRichText richText( TQStyleSheet::convertFromPlainText(e->text()), + TQFont(), + e->context(), + e->styleSheet(), + e->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.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); + + statusBar()->message( "Printing completed", 2000 ); + } else { + statusBar()->message( "Printing aborted", 2000 ); + } +} + +void ApplicationWindow::closeEvent( TQCloseEvent* ce ) +{ + if ( !e->isModified() ) { + ce->accept(); + return; + } + + switch( TQMessageBox::information( this, "TQt Application Example", + "The document has been changed since " + "the last save.", + "Save Now", "Cancel", "Leave Anyway", + 0, 1 ) ) { + case 0: + save(); + ce->accept(); + break; + case 1: + default: // just for sanity + ce->ignore(); + break; + case 2: + ce->accept(); + break; + } +} + + +void ApplicationWindow::about() +{ + TQMessageBox::about( this, "TQt Application Example", + "This example demonstrates simple use of " + "TQMainWindow,\nTQMenuBar and TQToolBar."); +} + + +void ApplicationWindow::aboutTQt() +{ + TQMessageBox::aboutTQt( this, "TQt Application Example" ); +} |