Home | All Classes | Main Classes | Annotated | Grouped Classes | Functions |
This example program is just like the application example, except that it provides a Multiple Document Interface (MDI).
Header file:
/**************************************************************************** ** $Id: qt/application.h 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 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. ** *****************************************************************************/ #ifndef APPLICATION_H #define APPLICATION_H #include <ntqmainwindow.h> #include <tqptrlist.h> class TQTextEdit; class TQToolBar; class TQPopupMenu; class TQWorkspace; class TQPopupMenu; class TQMovie; class MDIWindow: public TQMainWindow { TQ_OBJECT public: MDIWindow( TQWidget* parent, const char* name, int wflags ); ~MDIWindow(); void load( const TQString& fn ); void save(); void saveAs(); void print( TQPrinter* ); protected: void closeEvent( TQCloseEvent * ); signals: void message(const TQString&, int ); private: TQTextEdit* medit; TQMovie * mmovie; TQString filename; }; class ApplicationWindow: public TQMainWindow { TQ_OBJECT public: ApplicationWindow(); ~ApplicationWindow(); protected: void closeEvent( TQCloseEvent * ); private slots: MDIWindow* newDoc(); void load(); void save(); void saveAs(); void print(); void closeWindow(); void tileHorizontal(); void about(); void aboutTQt(); void windowsMenuAboutToShow(); void windowsMenuActivated( int id ); private: TQPrinter *printer; TQWorkspace* ws; TQToolBar *fileTools; TQPopupMenu* windowsMenu; }; #endif
Implementation:
/**************************************************************************** ** $Id: qt/application.cpp 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 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 <ntqworkspace.h> #include <ntqimage.h> #include <ntqpixmap.h> #include <ntqtoolbar.h> #include <ntqtoolbutton.h> #include <ntqpopupmenu.h> #include <ntqmenubar.h> #include <ntqmovie.h> #include <ntqfile.h> #include <ntqfiledialog.h> #include <ntqlabel.h> #include <ntqstatusbar.h> #include <ntqmessagebox.h> #include <ntqprinter.h> #include <ntqapplication.h> #include <ntqpushbutton.h> #include <ntqaccel.h> #include <ntqtextstream.h> #include <ntqtextedit.h> #include <ntqpainter.h> #include <ntqpaintdevicemetrics.h> #include <ntqwhatsthis.h> #include <tqobjectlist.h> #include <ntqvbox.h> #include <ntqsimplerichtext.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() : TQMainWindow( 0, "example application main window", WDestructiveClose ) { int id; TQPixmap openIcon, saveIcon; fileTools = new TQToolBar( this, "file operations" ); addToolBar( fileTools, tr( "File Operations" ), DockTop, TRUE ); openIcon = TQPixmap( fileopen ); TQToolButton * fileOpen = new TQToolButton( openIcon, "Open File", TQString::null, this, TQ_SLOT(load()), fileTools, "open file" ); saveIcon = TQPixmap( filesave ); TQToolButton * fileSave = new TQToolButton( saveIcon, "Save File", TQString::null, this, TQ_SLOT(save()), fileTools, "save file" ); #ifndef TQT_NO_PRINTER printer = new TQPrinter( TQPrinter::HighResolution ); TQPixmap printIcon; printIcon = TQPixmap( fileprint ); TQToolButton * filePrint = new TQToolButton( printIcon, "Print File", TQString::null, this, TQ_SLOT(print()), fileTools, "print file" ); TQWhatsThis::add( filePrint, filePrintText ); #endif (void)TQWhatsThis::whatsThisButton( fileTools ); TQWhatsThis::add( fileOpen, fileOpenText ); TQWhatsThis::add( fileSave, fileSaveText ); TQPopupMenu * file = new TQPopupMenu( this ); menuBar()->insertItem( "&File", file ); file->insertItem( "&New", this, TQ_SLOT(newDoc()), CTRL+Key_N ); id = file->insertItem( openIcon, "&Open...", this, TQ_SLOT(load()), CTRL+Key_O ); file->setWhatsThis( id, fileOpenText ); id = file->insertItem( saveIcon, "&Save", this, TQ_SLOT(save()), CTRL+Key_S ); file->setWhatsThis( id, fileSaveText ); id = file->insertItem( "Save &As...", this, TQ_SLOT(saveAs()) ); file->setWhatsThis( id, fileSaveText ); #ifndef TQT_NO_PRINTER file->insertSeparator(); id = file->insertItem( printIcon, "&Print...", this, TQ_SLOT(print()), CTRL+Key_P ); file->setWhatsThis( id, filePrintText ); #endif file->insertSeparator(); file->insertItem( "&Close", this, TQ_SLOT(closeWindow()), CTRL+Key_W ); file->insertItem( "&Quit", tqApp, TQ_SLOT( closeAllWindows() ), CTRL+Key_Q ); windowsMenu = new TQPopupMenu( this ); windowsMenu->setCheckable( TRUE ); connect( windowsMenu, TQ_SIGNAL( aboutToShow() ), this, TQ_SLOT( windowsMenuAboutToShow() ) ); menuBar()->insertItem( "&Windows", windowsMenu ); menuBar()->insertSeparator(); TQPopupMenu * help = new TQPopupMenu( this ); menuBar()->insertItem( "&Help", help ); help->insertItem( "&About", this, TQ_SLOT(about()), Key_F1); help->insertItem( "About &TQt", this, TQ_SLOT(aboutTQt())); help->insertSeparator(); help->insertItem( "What's &This", this, TQ_SLOT(whatsThis()), SHIFT+Key_F1); TQVBox* vb = new TQVBox( this ); vb->setFrameStyle( TQFrame::StyledPanel | TQFrame::Sunken ); ws = new TQWorkspace( vb ); ws->setScrollBarsEnabled( TRUE ); setCentralWidget( vb ); statusBar()->message( "Ready", 2000 ); } ApplicationWindow::~ApplicationWindow() { #ifndef TQT_NO_PRINTER delete printer; #endif } MDIWindow* ApplicationWindow::newDoc() { MDIWindow* w = new MDIWindow( ws, 0, WDestructiveClose ); connect( w, TQ_SIGNAL( message(const TQString&, int) ), statusBar(), TQ_SLOT( message(const TQString&, int )) ); w->setCaption("unnamed document"); w->setIcon( TQPixmap("document.xpm") ); // show the very first window in maximized mode if ( ws->windowList().isEmpty() ) w->showMaximized(); else w->show(); return w; } void ApplicationWindow::load() { TQString fn = TQFileDialog::getOpenFileName( TQString::null, TQString::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 TQT_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() { TQMessageBox::about( this, "TQt Application Example", "This example demonstrates simple use of\n " "TQt's Multiple Document Interface (MDI)."); } void ApplicationWindow::aboutTQt() { TQMessageBox::aboutTQt( this, "TQt Application Example" ); } void ApplicationWindow::windowsMenuAboutToShow() { windowsMenu->clear(); int cascadeId = windowsMenu->insertItem("&Cascade", ws, TQ_SLOT(cascade() ) ); int tileId = windowsMenu->insertItem("&Tile", ws, TQ_SLOT(tile() ) ); int horTileId = windowsMenu->insertItem("Tile &Horizontally", this, TQ_SLOT(tileHorizontal() ) ); if ( ws->windowList().isEmpty() ) { windowsMenu->setItemEnabled( cascadeId, FALSE ); windowsMenu->setItemEnabled( tileId, FALSE ); windowsMenu->setItemEnabled( horTileId, FALSE ); } windowsMenu->insertSeparator(); TQWidgetList windows = ws->windowList(); for ( int i = 0; i < int(windows.count()); ++i ) { int id = windowsMenu->insertItem(windows.at(i)->caption(), this, TQ_SLOT( windowsMenuActivated( int ) ) ); windowsMenu->setItemParameter( id, i ); windowsMenu->setItemChecked( id, ws->activeWindow() == windows.at(i) ); } } void ApplicationWindow::windowsMenuActivated( int id ) { TQWidget* w = ws->windowList().at( id ); if ( w ) w->showNormal(); w->setFocus(); } void ApplicationWindow::tileHorizontal() { // primitive horizontal tiling TQWidgetList windows = ws->windowList(); if ( !windows.count() ) return; if (ws->activeWindow()) ws->activeWindow()->showNormal(); int heightForEach = ws->height() / windows.count(); int y = 0; for ( int i = 0; i < int(windows.count()); ++i ) { TQWidget *window = windows.at(i); int preferredHeight = window->minimumHeight()+window->parentWidget()->baseSize().height(); int actHeight = TQMAX(heightForEach, preferredHeight); window->parentWidget()->setGeometry( 0, y, ws->width(), actHeight ); y += actHeight; } } void ApplicationWindow::closeEvent( TQCloseEvent *e ) { TQWidgetList windows = ws->windowList(); if ( windows.count() ) { for ( int i = 0; i < int(windows.count()); ++i ) { TQWidget *window = windows.at( i ); if ( !window->close() ) { e->ignore(); return; } } } TQMainWindow::closeEvent( e ); } MDIWindow::MDIWindow( TQWidget* parent, const char* name, int wflags ) : TQMainWindow( parent, name, wflags ) { mmovie = 0; medit = new TQTextEdit( this ); setFocusProxy( medit ); setCentralWidget( medit ); } MDIWindow::~MDIWindow() { delete mmovie; } void MDIWindow::closeEvent( TQCloseEvent *e ) { if ( medit->isModified() ) { switch( TQMessageBox::warning( this, "Save Changes", tr("Save changes to %1?").arg( caption() ), tr("Yes"), tr("No"), tr("Cancel") ) ) { case 0: { save(); if ( !filename.isEmpty() ) e->accept(); else e->ignore(); } break; case 1: e->accept(); break; default: e->ignore(); break; } } else { e->accept(); } } void MDIWindow::load( const TQString& fn ) { filename = fn; TQFile f( filename ); if ( !f.open( IO_ReadOnly ) ) return; if(fn.contains(".gif")) { TQWidget * tmp=new TQWidget(this); setFocusProxy(tmp); setCentralWidget(tmp); medit->hide(); delete medit; TQMovie * qm=new TQMovie(fn); #ifdef TQ_WS_QWS // temporary speed-test hack qm->setDisplayWidget(tmp); #endif tmp->setBackgroundMode(TQWidget::NoBackground); tmp->show(); mmovie=qm; } else { mmovie = 0; TQTextStream t(&f); TQString s = t.read(); medit->setText( s ); f.close(); } setCaption( filename ); emit message( TQString("Loaded document %1").arg(filename), 2000 ); } void MDIWindow::save() { if ( filename.isEmpty() ) { saveAs(); return; } TQString text = medit->text(); TQFile f( filename ); if ( !f.open( IO_WriteOnly ) ) { emit message( TQString("Could not write to %1").arg(filename), 2000 ); return; } TQTextStream t( &f ); t << text; f.close(); setCaption( filename ); emit message( TQString( "File %1 saved" ).arg( filename ), 2000 ); } void MDIWindow::saveAs() { TQString fn = TQFileDialog::getSaveFileName( filename, TQString::null, this ); if ( !fn.isEmpty() ) { filename = fn; save(); } else { emit message( "Saving aborted", 2000 ); } } void MDIWindow::print( TQPrinter* printer) { #ifndef TQT_NO_PRINTER int pageNo = 1; if ( printer->setup(this) ) { // printer dialog printer->setFullPage( TRUE ); emit message( "Printing...", 0 ); TQPainter p; if ( !p.begin( printer ) ) return; // paint on printer 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(medit->text()), TQFont(), medit->context(), medit->styleSheet(), medit->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; TQString msg( "Printing (page " ); msg += TQString::number( ++pageNo ); msg += ")..."; emit message( msg, 0 ); printer->newPage(); page++; } while (TRUE); } #endif }
Main:
/**************************************************************************** ** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 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 <ntqapplication.h> #include "application.h" int main( int argc, char ** argv ) { TQApplication a( argc, argv ); ApplicationWindow * mw = new ApplicationWindow(); a.setMainWidget(mw); mw->setCaption( "TQt Example - Multiple Documents Interface (MDI)" ); mw->show(); a.connect( &a, TQ_SIGNAL(lastWindowClosed()), &a, TQ_SLOT(quit()) ); int res = a.exec(); return res; }
See also Examples.
Copyright © 2007 Trolltech | Trademarks | TQt 3.3.8
|