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+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of an example program for Qt. 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()
+ : QMainWindow( 0, "example application main window", WDestructiveClose )
+{
+ printer = new QPrinter( QPrinter::HighResolution );
+
+ QAction * fileNewAction;
+ QAction * fileOpenAction;
+ QAction * fileSaveAction, * fileSaveAsAction, * filePrintAction;
+ QAction * fileCloseAction, * fileQuitAction;
+
+ fileNewAction = new QAction( "&New", CTRL+Key_N, this, "new" );
+ connect( fileNewAction, SIGNAL( activated() ) , this,
+ SLOT( newDoc() ) );
+
+ fileOpenAction = new QAction( QPixmap( 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>";
+ QMimeSourceFactory::defaultFactory()->setPixmap( "fileopen",
+ fileOpenAction->iconSet().pixmap() );
+ fileOpenAction->setWhatsThis( fileOpenText );
+
+ fileSaveAction = new QAction( QPixmap( 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 QAction( "Save File As", "Save &As...", 0, this,
+ "save as" );
+ connect( fileSaveAsAction, SIGNAL( activated() ) , this,
+ SLOT( saveAs() ) );
+ fileSaveAsAction->setWhatsThis( fileSaveText );
+
+ filePrintAction = new QAction( "Print File", QPixmap( 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 QAction( "Close", "&Close", CTRL+Key_W, this,
+ "close" );
+ connect( fileCloseAction, SIGNAL( activated() ) , this,
+ SLOT( close() ) );
+
+ fileQuitAction = new QAction( "Quit", "&Quit", CTRL+Key_Q, this,
+ "quit" );
+ connect( fileQuitAction, SIGNAL( activated() ) , qApp,
+ SLOT( closeAllWindows() ) );
+
+ // populate a tool bar with some actions
+
+ QToolBar * fileTools = new QToolBar( this, "file operations" );
+ fileTools->setLabel( "File Operations" );
+ fileOpenAction->addTo( fileTools );
+ fileSaveAction->addTo( fileTools );
+ filePrintAction->addTo( fileTools );
+ (void)QWhatsThis::whatsThisButton( fileTools );
+
+
+ // populate a menu with all actions
+
+ QPopupMenu * file = new QPopupMenu( 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
+
+ QPopupMenu * help = new QPopupMenu( this );
+ menuBar()->insertItem( "&Help", help );
+ help->insertItem( "&About", this, SLOT(about()), Key_F1 );
+ help->insertItem( "About &Qt", this, SLOT(aboutQt()) );
+ help->insertSeparator();
+ help->insertItem( "What's &This", this, SLOT(whatsThis()),
+ SHIFT+Key_F1 );
+
+
+ // create and define the central widget
+
+ e = new QTextEdit( 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()
+{
+ QString fn = QFileDialog::getOpenFileName( QString::null, QString::null,
+ this);
+ if ( !fn.isEmpty() )
+ load( fn );
+ else
+ statusBar()->message( "Loading aborted", 2000 );
+}
+
+
+void ApplicationWindow::load( const QString &fileName )
+{
+ QFile f( fileName );
+ if ( !f.open( IO_ReadOnly ) )
+ return;
+
+ QTextStream 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;
+ }
+
+ QString text = e->text();
+ QFile f( filename );
+ if ( !f.open( IO_WriteOnly ) ) {
+ statusBar()->message( QString("Could not write to %1").arg(filename),
+ 2000 );
+ return;
+ }
+
+ QTextStream t( &f );
+ t << text;
+ f.close();
+
+ e->setModified( FALSE );
+
+ setCaption( filename );
+
+ statusBar()->message( QString( "File %1 saved" ).arg( filename ), 2000 );
+}
+
+
+void ApplicationWindow::saveAs()
+{
+ QString fn = QFileDialog::getSaveFileName( QString::null, QString::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..." );
+ QPainter p;
+ if( !p.begin( printer ) ) { // paint on printer
+ statusBar()->message( "Printing aborted", 2000 );
+ return;
+ }
+
+ QPaintDeviceMetrics metrics( p.device() );
+ int dpiy = metrics.logicalDpiY();
+ int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins
+ QRect view( margin, margin, metrics.width() - 2*margin, metrics.height() - 2*margin );
+ QSimpleRichText richText( QStyleSheet::convertFromPlainText(e->text()),
+ QFont(),
+ 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( QString::number( page ) ),
+ view.bottom() + p.fontMetrics().ascent() + 5, QString::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( QCloseEvent* ce )
+{
+ if ( !e->isModified() ) {
+ ce->accept();
+ return;
+ }
+
+ switch( QMessageBox::information( this, "Qt 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()
+{
+ QMessageBox::about( this, "Qt Application Example",
+ "This example demonstrates simple use of "
+ "QMainWindow,\nQMenuBar and QToolBar.");
+}
+
+
+void ApplicationWindow::aboutQt()
+{
+ QMessageBox::aboutQt( this, "Qt Application Example" );
+}
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