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436 lines
11 KiB
436 lines
11 KiB
/****************************************************************************
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "application.h"
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#include <qworkspace.h>
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#include <qimage.h>
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#include <qpixmap.h>
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#include <qtoolbar.h>
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#include <qtoolbutton.h>
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#include <qpopupmenu.h>
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#include <qmenubar.h>
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#include <qmovie.h>
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#include <qfile.h>
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#include <qfiledialog.h>
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#include <qlabel.h>
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#include <qstatusbar.h>
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#include <qmessagebox.h>
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#include <qprinter.h>
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#include <qapplication.h>
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#include <qpushbutton.h>
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#include <qaccel.h>
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#include <qtextstream.h>
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#include <qtextedit.h>
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#include <qpainter.h>
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#include <qpaintdevicemetrics.h>
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#include <qwhatsthis.h>
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#include <qobjectlist.h>
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#include <qvbox.h>
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#include <qsimplerichtext.h>
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#include "filesave.xpm"
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#include "fileopen.xpm"
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#include "fileprint.xpm"
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const char * fileOpenText = "Click this button to open a <em>new file</em>. <br><br>"
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"You can also select the <b>Open command</b> from the File menu.";
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const char * fileSaveText = "Click this button to save the file you are "
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"editing. You will be prompted for a file name.\n\n"
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"You can also select the Save command from the File menu.\n\n"
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"Note that implementing this function is left as an exercise for the reader.";
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const char * filePrintText = "Click this button to print the file you "
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"are editing.\n\n"
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"You can also select the Print command from the File menu.";
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ApplicationWindow::ApplicationWindow()
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: QMainWindow( 0, "example application main window", WDestructiveClose )
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{
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int id;
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QPixmap openIcon, saveIcon;
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fileTools = new QToolBar( this, "file operations" );
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addToolBar( fileTools, tr( "File Operations" ), DockTop, TRUE );
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openIcon = QPixmap( fileopen );
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QToolButton * fileOpen
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= new QToolButton( openIcon, "Open File", QString::null,
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this, SLOT(load()), fileTools, "open file" );
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saveIcon = QPixmap( filesave );
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QToolButton * fileSave
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= new QToolButton( saveIcon, "Save File", QString::null,
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this, SLOT(save()), fileTools, "save file" );
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#ifndef QT_NO_PRINTER
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printer = new QPrinter( QPrinter::HighResolution );
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QPixmap printIcon;
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printIcon = QPixmap( fileprint );
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QToolButton * filePrint
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= new QToolButton( printIcon, "Print File", QString::null,
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this, SLOT(print()), fileTools, "print file" );
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QWhatsThis::add( filePrint, filePrintText );
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#endif
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(void)QWhatsThis::whatsThisButton( fileTools );
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QWhatsThis::add( fileOpen, fileOpenText );
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QWhatsThis::add( fileSave, fileSaveText );
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QPopupMenu * file = new QPopupMenu( this );
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menuBar()->insertItem( "&File", file );
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file->insertItem( "&New", this, SLOT(newDoc()), CTRL+Key_N );
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id = file->insertItem( openIcon, "&Open...",
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this, SLOT(load()), CTRL+Key_O );
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file->setWhatsThis( id, fileOpenText );
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id = file->insertItem( saveIcon, "&Save",
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this, SLOT(save()), CTRL+Key_S );
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file->setWhatsThis( id, fileSaveText );
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id = file->insertItem( "Save &As...", this, SLOT(saveAs()) );
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file->setWhatsThis( id, fileSaveText );
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#ifndef QT_NO_PRINTER
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file->insertSeparator();
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id = file->insertItem( printIcon, "&Print...",
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this, SLOT(print()), CTRL+Key_P );
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file->setWhatsThis( id, filePrintText );
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#endif
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file->insertSeparator();
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file->insertItem( "&Close", this, SLOT(closeWindow()), CTRL+Key_W );
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file->insertItem( "&Quit", qApp, SLOT( closeAllWindows() ), CTRL+Key_Q );
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windowsMenu = new QPopupMenu( this );
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windowsMenu->setCheckable( TRUE );
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connect( windowsMenu, SIGNAL( aboutToShow() ),
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this, SLOT( windowsMenuAboutToShow() ) );
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menuBar()->insertItem( "&Windows", windowsMenu );
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menuBar()->insertSeparator();
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QPopupMenu * help = new QPopupMenu( this );
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menuBar()->insertItem( "&Help", help );
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help->insertItem( "&About", this, SLOT(about()), Key_F1);
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help->insertItem( "About &Qt", this, SLOT(aboutQt()));
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help->insertSeparator();
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help->insertItem( "What's &This", this, SLOT(whatsThis()), SHIFT+Key_F1);
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QVBox* vb = new QVBox( this );
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vb->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
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ws = new QWorkspace( vb );
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ws->setScrollBarsEnabled( TRUE );
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setCentralWidget( vb );
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statusBar()->message( "Ready", 2000 );
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}
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ApplicationWindow::~ApplicationWindow()
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{
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#ifndef QT_NO_PRINTER
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delete printer;
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#endif
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}
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MDIWindow* ApplicationWindow::newDoc()
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{
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MDIWindow* w = new MDIWindow( ws, 0, WDestructiveClose );
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connect( w, SIGNAL( message(const QString&, int) ), statusBar(), SLOT( message(const QString&, int )) );
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w->setCaption("unnamed document");
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w->setIcon( QPixmap("document.xpm") );
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// show the very first window in maximized mode
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if ( ws->windowList().isEmpty() )
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w->showMaximized();
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else
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w->show();
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return w;
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}
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void ApplicationWindow::load()
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{
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QString fn = QFileDialog::getOpenFileName( QString::null, QString::null, this );
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if ( !fn.isEmpty() ) {
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MDIWindow* w = newDoc();
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w->load( fn );
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} else {
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statusBar()->message( "Loading aborted", 2000 );
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}
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}
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void ApplicationWindow::save()
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{
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MDIWindow* m = (MDIWindow*)ws->activeWindow();
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if ( m )
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m->save();
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}
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void ApplicationWindow::saveAs()
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{
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MDIWindow* m = (MDIWindow*)ws->activeWindow();
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if ( m )
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m->saveAs();
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}
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void ApplicationWindow::print()
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{
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#ifndef QT_NO_PRINTER
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MDIWindow* m = (MDIWindow*)ws->activeWindow();
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if ( m )
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m->print( printer );
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#endif
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}
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void ApplicationWindow::closeWindow()
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{
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MDIWindow* m = (MDIWindow*)ws->activeWindow();
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if ( m )
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m->close();
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}
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void ApplicationWindow::about()
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{
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QMessageBox::about( this, "Qt Application Example",
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"This example demonstrates simple use of\n "
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"Qt's Multiple Document Interface (MDI).");
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}
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void ApplicationWindow::aboutQt()
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{
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QMessageBox::aboutQt( this, "Qt Application Example" );
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}
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void ApplicationWindow::windowsMenuAboutToShow()
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{
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windowsMenu->clear();
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int cascadeId = windowsMenu->insertItem("&Cascade", ws, SLOT(cascade() ) );
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int tileId = windowsMenu->insertItem("&Tile", ws, SLOT(tile() ) );
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int horTileId = windowsMenu->insertItem("Tile &Horizontally", this, SLOT(tileHorizontal() ) );
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if ( ws->windowList().isEmpty() ) {
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windowsMenu->setItemEnabled( cascadeId, FALSE );
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windowsMenu->setItemEnabled( tileId, FALSE );
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windowsMenu->setItemEnabled( horTileId, FALSE );
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}
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windowsMenu->insertSeparator();
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QWidgetList windows = ws->windowList();
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for ( int i = 0; i < int(windows.count()); ++i ) {
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int id = windowsMenu->insertItem(windows.at(i)->caption(),
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this, SLOT( windowsMenuActivated( int ) ) );
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windowsMenu->setItemParameter( id, i );
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windowsMenu->setItemChecked( id, ws->activeWindow() == windows.at(i) );
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}
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}
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void ApplicationWindow::windowsMenuActivated( int id )
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{
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QWidget* w = ws->windowList().at( id );
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if ( w )
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w->showNormal();
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w->setFocus();
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}
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void ApplicationWindow::tileHorizontal()
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{
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// primitive horizontal tiling
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QWidgetList windows = ws->windowList();
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if ( !windows.count() )
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return;
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if (ws->activeWindow())
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ws->activeWindow()->showNormal();
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int heightForEach = ws->height() / windows.count();
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int y = 0;
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for ( int i = 0; i < int(windows.count()); ++i ) {
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QWidget *window = windows.at(i);
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int preferredHeight = window->minimumHeight()+window->parentWidget()->baseSize().height();
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int actHeight = QMAX(heightForEach, preferredHeight);
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window->parentWidget()->setGeometry( 0, y, ws->width(), actHeight );
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y += actHeight;
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}
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}
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void ApplicationWindow::closeEvent( QCloseEvent *e )
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{
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QWidgetList windows = ws->windowList();
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if ( windows.count() ) {
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for ( int i = 0; i < int(windows.count()); ++i ) {
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QWidget *window = windows.at( i );
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if ( !window->close() ) {
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e->ignore();
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return;
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}
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}
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}
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QMainWindow::closeEvent( e );
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}
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MDIWindow::MDIWindow( QWidget* parent, const char* name, int wflags )
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: QMainWindow( parent, name, wflags )
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{
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mmovie = 0;
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medit = new QTextEdit( this );
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setFocusProxy( medit );
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setCentralWidget( medit );
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}
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MDIWindow::~MDIWindow()
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{
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delete mmovie;
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}
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void MDIWindow::closeEvent( QCloseEvent *e )
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{
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if ( medit->isModified() ) {
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switch( QMessageBox::warning( this, "Save Changes",
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tr("Save changes to %1?").arg( caption() ),
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tr("Yes"), tr("No"), tr("Cancel") ) ) {
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case 0:
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{
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save();
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if ( !filename.isEmpty() )
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e->accept();
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else
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e->ignore();
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}
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break;
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case 1:
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e->accept();
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break;
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default:
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e->ignore();
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break;
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}
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} else {
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e->accept();
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}
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}
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void MDIWindow::load( const QString& fn )
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{
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filename = fn;
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QFile f( filename );
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if ( !f.open( IO_ReadOnly ) )
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return;
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if(fn.contains(".gif")) {
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QWidget * tmp=new QWidget(this);
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setFocusProxy(tmp);
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setCentralWidget(tmp);
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medit->hide();
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delete medit;
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QMovie * qm=new QMovie(fn);
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#ifdef Q_WS_QWS // temporary speed-test hack
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qm->setDisplayWidget(tmp);
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#endif
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tmp->setBackgroundMode(QWidget::NoBackground);
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tmp->show();
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mmovie=qm;
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} else {
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mmovie = 0;
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QTextStream t(&f);
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QString s = t.read();
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medit->setText( s );
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f.close();
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}
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setCaption( filename );
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emit message( QString("Loaded document %1").arg(filename), 2000 );
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}
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void MDIWindow::save()
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{
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if ( filename.isEmpty() ) {
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saveAs();
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return;
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}
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QString text = medit->text();
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QFile f( filename );
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if ( !f.open( IO_WriteOnly ) ) {
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emit message( QString("Could not write to %1").arg(filename),
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2000 );
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return;
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}
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QTextStream t( &f );
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t << text;
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f.close();
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setCaption( filename );
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emit message( QString( "File %1 saved" ).arg( filename ), 2000 );
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}
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void MDIWindow::saveAs()
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{
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QString fn = QFileDialog::getSaveFileName( filename, QString::null, this );
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if ( !fn.isEmpty() ) {
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filename = fn;
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save();
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} else {
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emit message( "Saving aborted", 2000 );
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}
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}
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void MDIWindow::print( QPrinter* printer)
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{
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#ifndef QT_NO_PRINTER
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int pageNo = 1;
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if ( printer->setup(this) ) { // printer dialog
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printer->setFullPage( TRUE );
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emit message( "Printing...", 0 );
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QPainter p;
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if ( !p.begin( printer ) )
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return; // paint on printer
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QPaintDeviceMetrics metrics( p.device() );
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int dpiy = metrics.logicalDpiY();
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int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins
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QRect view( margin, margin, metrics.width() - 2*margin, metrics.height() - 2*margin );
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QSimpleRichText richText( QStyleSheet::convertFromPlainText(medit->text()),
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QFont(),
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medit->context(),
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medit->styleSheet(),
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medit->mimeSourceFactory(),
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view.height() );
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richText.setWidth( &p, view.width() );
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int page = 1;
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do {
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richText.draw( &p, margin, margin, view, colorGroup() );
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view.moveBy( 0, view.height() );
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p.translate( 0 , -view.height() );
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p.drawText( view.right() - p.fontMetrics().width( QString::number( page ) ),
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view.bottom() + p.fontMetrics().ascent() + 5, QString::number( page ) );
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if ( view.top() - margin >= richText.height() )
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break;
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QString msg( "Printing (page " );
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msg += QString::number( ++pageNo );
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msg += ")...";
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emit message( msg, 0 );
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printer->newPage();
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page++;
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} while (TRUE);
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}
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#endif
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}
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