Add Qt3 development HEAD version

1 files changed, 306 insertions, 0 deletions

diff --git a/examples/action/application.cpp b/examples/action/application.cpp
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+++ b/examples/action/application.cpp
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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" );
+}