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- /****************************************************************************
- ** $Id: qt/application.cpp 3.0.0 edited Sep 10 14:04 $
- **
- ** Copyright (C) 1992-2000 Trolltech AS. 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 <qworkspace.h>
- #include <qimage.h>
- #include <qpixmap.h>
- #include <qtoolbar.h>
- #include <qtoolbutton.h>
- #include <qpopupmenu.h>
- #include <qmenubar.h>
- #include <qmovie.h>
- #include <qmultilineedit.h>
- #include <qfile.h>
- #include <qfiledialog.h>
- #include <qlabel.h>
- #include <qstatusbar.h>
- #include <qmessagebox.h>
- #include <qprinter.h>
- #include <qapplication.h>
- #include <qpushbutton.h>
- #include <qaccel.h>
- #include <qtextstream.h>
- #include <qpainter.h>
- #include <qpaintdevicemetrics.h>
- #include <qwhatsthis.h>
- #include <qobjectlist.h>
- #include <qvbox.h>
-
- #include "filesave.xpm"
- #include "fileopen.xpm"
- #include "fileprint.xpm"
-
-
- const char * fileOpenText = "Click this button to open a <em>new file</em>. <br><br>"
- "You can also select the <b>Open command</b> from the File menu.";
- const char * fileSaveText = "Click this button to save the file you are "
- "editing. You will be prompted for a file name.\n\n"
- "You can also select the Save command from the File menu.\n\n"
- "Note that implementing this function is left as an exercise for the reader.";
- const char * filePrintText = "Click this button to print the file you "
- "are editing.\n\n"
- "You can also select the Print command from the File menu.";
-
- ApplicationWindow::ApplicationWindow()
- : QMainWindow( 0, "example application main window", WDestructiveClose )
- {
- int id;
-
- QPixmap openIcon, saveIcon;
-
- fileTools = new QToolBar( this, "file operations" );
- addToolBar( fileTools, tr( "File Operations" ), DockTop, TRUE );
-
- openIcon = QPixmap( fileopen );
- QToolButton * fileOpen
- = new QToolButton( openIcon, "Open File", QString::null,
- this, SLOT(load()), fileTools, "open file" );
-
- saveIcon = QPixmap( filesave );
- QToolButton * fileSave
- = new QToolButton( saveIcon, "Save File", QString::null,
- this, SLOT(save()), fileTools, "save file" );
-
- #ifndef QT_NO_PRINTER
- printer = new QPrinter;
- QPixmap printIcon;
-
- printIcon = QPixmap( fileprint );
- QToolButton * filePrint
- = new QToolButton( printIcon, "Print File", QString::null,
- this, SLOT(print()), fileTools, "print file" );
- QWhatsThis::add( filePrint, filePrintText );
- #endif
-
- (void)QWhatsThis::whatsThisButton( fileTools );
-
- QWhatsThis::add( fileOpen, fileOpenText );
- QWhatsThis::add( fileSave, fileSaveText );
-
- QPopupMenu * file = new QPopupMenu( this );
- menuBar()->insertItem( "&File", file );
-
- file->insertItem( "&New", this, SLOT(newDoc()), CTRL+Key_N );
-
- id = file->insertItem( openIcon, "&Open...",
- this, SLOT(load()), CTRL+Key_O );
- file->setWhatsThis( id, fileOpenText );
-
- id = file->insertItem( saveIcon, "&Save",
- this, SLOT(save()), CTRL+Key_S );
- file->setWhatsThis( id, fileSaveText );
- id = file->insertItem( "Save &As...", this, SLOT(saveAs()) );
- file->setWhatsThis( id, fileSaveText );
- #ifndef QT_NO_PRINTER
- file->insertSeparator();
- id = file->insertItem( printIcon, "&Print...",
- this, SLOT(print()), CTRL+Key_P );
- file->setWhatsThis( id, filePrintText );
- #endif
- file->insertSeparator();
- file->insertItem( "&Close", this, SLOT(closeWindow()), CTRL+Key_W );
- file->insertItem( "&Quit", qApp, SLOT( closeAllWindows() ), CTRL+Key_Q );
-
- windowsMenu = new QPopupMenu( this );
- windowsMenu->setCheckable( TRUE );
- connect( windowsMenu, SIGNAL( aboutToShow() ),
- this, SLOT( windowsMenuAboutToShow() ) );
- menuBar()->insertItem( "&Windows", windowsMenu );
-
- menuBar()->insertSeparator();
- 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);
-
- QVBox* vb = new QVBox( this );
- vb->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
- ws = new QWorkspace( vb );
- ws->setScrollBarsEnabled( TRUE );
- setCentralWidget( vb );
-
- statusBar()->message( "Ready", 2000 );
- }
-
-
- ApplicationWindow::~ApplicationWindow()
- {
- #ifndef QT_NO_PRINTER
- delete printer;
- #endif
- }
-
-
-
- MDIWindow* ApplicationWindow::newDoc()
- {
- MDIWindow* w = new MDIWindow( ws, 0, WDestructiveClose );
- connect( w, SIGNAL( message(const QString&, int) ), statusBar(), SLOT( message(const QString&, int )) );
- w->setCaption("unnamed document");
- w->setIcon( QPixmap("document.xpm") );
- // show the very first window in maximized mode
- if ( ws->windowList().isEmpty() )
- w->showMaximized();
- else
- w->show();
- return w;
- }
-
- void ApplicationWindow::load()
- {
- QString fn = QFileDialog::getOpenFileName( QString::null, QString::null, this );
- if ( !fn.isEmpty() ) {
- MDIWindow* w = newDoc();
- w->load( fn );
- } else {
- statusBar()->message( "Loading aborted", 2000 );
- }
- }
-
- void ApplicationWindow::save()
- {
- MDIWindow* m = (MDIWindow*)ws->activeWindow();
- if ( m )
- m->save();
- }
-
-
- void ApplicationWindow::saveAs()
- {
- MDIWindow* m = (MDIWindow*)ws->activeWindow();
- if ( m )
- m->saveAs();
- }
-
-
- void ApplicationWindow::print()
- {
- #ifndef QT_NO_PRINTER
- MDIWindow* m = (MDIWindow*)ws->activeWindow();
- if ( m )
- m->print( printer );
- #endif
- }
-
-
- void ApplicationWindow::closeWindow()
- {
- MDIWindow* m = (MDIWindow*)ws->activeWindow();
- if ( m )
- m->close();
- }
-
- void ApplicationWindow::about()
- {
- QMessageBox::about( this, "Qt Application Example",
- "This example demonstrates simple use of\n "
- "Qt's Multiple Document Interface (MDI).");
- }
-
-
- void ApplicationWindow::aboutQt()
- {
- QMessageBox::aboutQt( this, "Qt Application Example" );
- }
-
-
- void ApplicationWindow::windowsMenuAboutToShow()
- {
- windowsMenu->clear();
- int cascadeId = windowsMenu->insertItem("&Cascade", ws, SLOT(cascade() ) );
- int tileId = windowsMenu->insertItem("&Tile", ws, SLOT(tile() ) );
- if ( ws->windowList().isEmpty() ) {
- windowsMenu->setItemEnabled( cascadeId, FALSE );
- windowsMenu->setItemEnabled( tileId, FALSE );
- }
- windowsMenu->insertSeparator();
- QWidgetList windows = ws->windowList();
- for ( int i = 0; i < int(windows.count()); ++i ) {
- int id = windowsMenu->insertItem(windows.at(i)->caption(),
- this, SLOT( windowsMenuActivated( int ) ) );
- windowsMenu->setItemParameter( id, i );
- windowsMenu->setItemChecked( id, ws->activeWindow() == windows.at(i) );
- }
- }
-
- void ApplicationWindow::windowsMenuActivated( int id )
- {
- QWidget* w = ws->windowList().at( id );
- if ( w )
- w->showNormal();
- w->setFocus();
- }
-
- MDIWindow::MDIWindow( QWidget* parent, const char* name, int wflags )
- : QMainWindow( parent, name, wflags )
- {
- mmovie = 0;
- medit = new QMultiLineEdit( this );
- setFocusProxy( medit );
- setCentralWidget( medit );
- }
-
- MDIWindow::~MDIWindow()
- {
- delete mmovie;
- }
-
-
- void MDIWindow::load( const QString& fn )
- {
- filename = fn;
- QFile f( filename );
- if ( !f.open( IO_ReadOnly ) )
- return;
-
- if(fn.contains(".gif")) {
- QWidget * tmp=new QWidget(this);
- setFocusProxy(tmp);
- setCentralWidget(tmp);
- medit->hide();
- delete medit;
- QMovie * qm=new QMovie(fn);
- #ifdef Q_WS_QWS // temporary speed-test hack
- qm->setDisplayWidget(tmp);
- #endif
- tmp->setBackgroundMode(QWidget::NoBackground);
- tmp->show();
- mmovie=qm;
- } else {
- mmovie = 0;
-
- QTextStream t(&f);
- QString s = t.read();
- medit->setText( s );
- f.close();
-
-
- }
- setCaption( filename );
- emit message( QString("Loaded document %1").arg(filename), 2000 );
- }
-
- void MDIWindow::save()
- {
- if ( filename.isEmpty() ) {
- saveAs();
- return;
- }
-
- QString text = medit->text();
- QFile f( filename );
- if ( !f.open( IO_WriteOnly ) ) {
- emit message( QString("Could not write to %1").arg(filename),
- 2000 );
- return;
- }
-
- QTextStream t( &f );
- t << text;
- f.close();
-
- setCaption( filename );
-
- emit message( QString( "File %1 saved" ).arg( filename ), 2000 );
- }
-
- void MDIWindow::saveAs()
- {
- QString fn = QFileDialog::getSaveFileName( filename, QString::null, this );
- if ( !fn.isEmpty() ) {
- filename = fn;
- save();
- } else {
- emit message( "Saving aborted", 2000 );
- }
- }
-
- void MDIWindow::print( QPrinter* printer)
- {
- #ifndef QT_NO_PRINTER
- const int Margin = 10;
- int pageNo = 1;
-
- if ( printer->setup(this) ) { // printer dialog
- emit message( "Printing...", 0 );
- QPainter p;
- if ( !p.begin( printer ) )
- return; // paint on printer
- p.setFont( medit->font() );
- int yPos = 0; // y position for each line
- QFontMetrics fm = p.fontMetrics();
- QPaintDeviceMetrics metrics( printer ); // need width/height
- // of printer surface
- for( int i = 0 ; i < medit->numLines() ; i++ ) {
- if ( Margin + yPos > metrics.height() - Margin ) {
- QString msg( "Printing (page " );
- msg += QString::number( ++pageNo );
- msg += ")...";
- emit message( msg, 0 );
- printer->newPage(); // no more room on this page
- yPos = 0; // back to top of page
- }
- p.drawText( Margin, Margin + yPos,
- metrics.width(), fm.lineSpacing(),
- ExpandTabs | DontClip,
- medit->textLine( i ) );
- yPos = yPos + fm.lineSpacing();
- }
- p.end(); // send job to printer
- emit message( "Printing completed", 2000 );
- } else {
- emit message( "Printing aborted", 2000 );
- }
- #endif
- }
-
-
-