| [2] | 1 | /****************************************************************************
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| 2 | ** $Id: application.cpp 20 2005-11-17 18:00:27Z dmik $
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| 3 | **
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| 4 | ** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
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| 5 | **
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| 6 | ** This file is part of an example program for Qt. This example
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| 7 | ** program may be used, distributed and modified without limitation.
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| 8 | **
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| 9 | *****************************************************************************/
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| 10 |
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| 11 | #include "application.h"
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| 12 | #include <qworkspace.h>
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| 13 | #include <qimage.h>
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| 14 | #include <qpixmap.h>
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| 15 | #include <qtoolbar.h>
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| 16 | #include <qtoolbutton.h>
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| 17 | #include <qpopupmenu.h>
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| 18 | #include <qmenubar.h>
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| 19 | #include <qmovie.h>
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| 20 | #include <qfile.h>
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| 21 | #include <qfiledialog.h>
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| 22 | #include <qlabel.h>
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| 23 | #include <qstatusbar.h>
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| 24 | #include <qmessagebox.h>
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| 25 | #include <qprinter.h>
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| 26 | #include <qapplication.h>
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| 27 | #include <qpushbutton.h>
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| 28 | #include <qaccel.h>
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| 29 | #include <qtextstream.h>
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| 30 | #include <qtextedit.h>
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| 31 | #include <qpainter.h>
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| 32 | #include <qpaintdevicemetrics.h>
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| 33 | #include <qwhatsthis.h>
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| 34 | #include <qobjectlist.h>
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| 35 | #include <qvbox.h>
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| 36 | #include <qsimplerichtext.h>
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| 37 |
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| 38 | #include "filesave.xpm"
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| 39 | #include "fileopen.xpm"
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| [20] | 40 | #ifndef QT_NO_PRINTER
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| [2] | 41 | #include "fileprint.xpm"
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| [20] | 42 | #endif
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| [2] | 43 |
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| 44 | const char * fileOpenText = "Click this button to open a <em>new file</em>. <br><br>"
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| 45 | "You can also select the <b>Open command</b> from the File menu.";
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| 46 | const char * fileSaveText = "Click this button to save the file you are "
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| 47 | "editing. You will be prompted for a file name.\n\n"
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| 48 | "You can also select the Save command from the File menu.\n\n"
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| 49 | "Note that implementing this function is left as an exercise for the reader.";
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| 50 | const char * filePrintText = "Click this button to print the file you "
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| 51 | "are editing.\n\n"
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| 52 | "You can also select the Print command from the File menu.";
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| 53 |
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| 54 | ApplicationWindow::ApplicationWindow()
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| 55 | : QMainWindow( 0, "example application main window", WDestructiveClose )
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| 56 | {
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| 57 | int id;
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| 58 |
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| 59 | QPixmap openIcon, saveIcon;
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| 60 |
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| 61 | fileTools = new QToolBar( this, "file operations" );
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| 62 | addToolBar( fileTools, tr( "File Operations" ), DockTop, TRUE );
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| 63 |
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| 64 | openIcon = QPixmap( fileopen );
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| 65 | QToolButton * fileOpen
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| 66 | = new QToolButton( openIcon, "Open File", QString::null,
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| 67 | this, SLOT(load()), fileTools, "open file" );
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| 68 |
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| 69 | saveIcon = QPixmap( filesave );
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| 70 | QToolButton * fileSave
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| 71 | = new QToolButton( saveIcon, "Save File", QString::null,
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| 72 | this, SLOT(save()), fileTools, "save file" );
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| 73 |
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| 74 | #ifndef QT_NO_PRINTER
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| 75 | printer = new QPrinter( QPrinter::HighResolution );
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| 76 | QPixmap printIcon;
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| 77 |
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| 78 | printIcon = QPixmap( fileprint );
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| 79 | QToolButton * filePrint
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| 80 | = new QToolButton( printIcon, "Print File", QString::null,
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| 81 | this, SLOT(print()), fileTools, "print file" );
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| 82 | QWhatsThis::add( filePrint, filePrintText );
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| 83 | #endif
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| 84 |
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| 85 | (void)QWhatsThis::whatsThisButton( fileTools );
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| 86 |
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| 87 | QWhatsThis::add( fileOpen, fileOpenText );
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| 88 | QWhatsThis::add( fileSave, fileSaveText );
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| 89 |
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| 90 | QPopupMenu * file = new QPopupMenu( this );
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| 91 | menuBar()->insertItem( "&File", file );
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| 92 |
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| 93 | file->insertItem( "&New", this, SLOT(newDoc()), CTRL+Key_N );
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| 94 |
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| 95 | id = file->insertItem( openIcon, "&Open...",
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| 96 | this, SLOT(load()), CTRL+Key_O );
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| 97 | file->setWhatsThis( id, fileOpenText );
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| 98 |
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| 99 | id = file->insertItem( saveIcon, "&Save",
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| 100 | this, SLOT(save()), CTRL+Key_S );
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| 101 | file->setWhatsThis( id, fileSaveText );
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| 102 | id = file->insertItem( "Save &As...", this, SLOT(saveAs()) );
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| 103 | file->setWhatsThis( id, fileSaveText );
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| 104 | #ifndef QT_NO_PRINTER
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| 105 | file->insertSeparator();
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| 106 | id = file->insertItem( printIcon, "&Print...",
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| 107 | this, SLOT(print()), CTRL+Key_P );
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| 108 | file->setWhatsThis( id, filePrintText );
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| 109 | #endif
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| 110 | file->insertSeparator();
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| 111 | file->insertItem( "&Close", this, SLOT(closeWindow()), CTRL+Key_W );
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| 112 | file->insertItem( "&Quit", qApp, SLOT( closeAllWindows() ), CTRL+Key_Q );
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| 113 |
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| 114 | windowsMenu = new QPopupMenu( this );
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| 115 | windowsMenu->setCheckable( TRUE );
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| 116 | connect( windowsMenu, SIGNAL( aboutToShow() ),
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| 117 | this, SLOT( windowsMenuAboutToShow() ) );
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| 118 | menuBar()->insertItem( "&Windows", windowsMenu );
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| 119 |
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| 120 | menuBar()->insertSeparator();
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| 121 | QPopupMenu * help = new QPopupMenu( this );
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| 122 | menuBar()->insertItem( "&Help", help );
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| 123 |
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| 124 | help->insertItem( "&About", this, SLOT(about()), Key_F1);
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| 125 | help->insertItem( "About &Qt", this, SLOT(aboutQt()));
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| 126 | help->insertSeparator();
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| 127 | help->insertItem( "What's &This", this, SLOT(whatsThis()), SHIFT+Key_F1);
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| 128 |
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| 129 | QVBox* vb = new QVBox( this );
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| 130 | vb->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
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| 131 | ws = new QWorkspace( vb );
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| 132 | ws->setScrollBarsEnabled( TRUE );
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| 133 | setCentralWidget( vb );
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| 134 |
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| 135 | statusBar()->message( "Ready", 2000 );
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| 136 | }
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| 137 |
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| 138 |
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| 139 | ApplicationWindow::~ApplicationWindow()
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| 140 | {
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| 141 | #ifndef QT_NO_PRINTER
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| 142 | delete printer;
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| 143 | #endif
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| 144 | }
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| 145 |
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| 146 |
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| 147 |
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| 148 | MDIWindow* ApplicationWindow::newDoc()
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| 149 | {
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| 150 | MDIWindow* w = new MDIWindow( ws, 0, WDestructiveClose );
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| 151 | connect( w, SIGNAL( message(const QString&, int) ), statusBar(), SLOT( message(const QString&, int )) );
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| 152 | w->setCaption("unnamed document");
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| 153 | w->setIcon( QPixmap("document.xpm") );
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| 154 | // show the very first window in maximized mode
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| 155 | if ( ws->windowList().isEmpty() )
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| 156 | w->showMaximized();
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| 157 | else
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| 158 | w->show();
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| 159 | return w;
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| 160 | }
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| 161 |
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| 162 | void ApplicationWindow::load()
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| 163 | {
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| 164 | QString fn = QFileDialog::getOpenFileName( QString::null, QString::null, this );
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| 165 | if ( !fn.isEmpty() ) {
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| 166 | MDIWindow* w = newDoc();
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| 167 | w->load( fn );
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| 168 | } else {
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| 169 | statusBar()->message( "Loading aborted", 2000 );
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| 170 | }
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| 171 | }
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| 172 |
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| 173 | void ApplicationWindow::save()
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| 174 | {
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| 175 | MDIWindow* m = (MDIWindow*)ws->activeWindow();
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| 176 | if ( m )
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| 177 | m->save();
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| 178 | }
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| 179 |
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| 180 |
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| 181 | void ApplicationWindow::saveAs()
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| 182 | {
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| 183 | MDIWindow* m = (MDIWindow*)ws->activeWindow();
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| 184 | if ( m )
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| 185 | m->saveAs();
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| 186 | }
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| 187 |
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| 188 |
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| 189 | void ApplicationWindow::print()
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| 190 | {
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| 191 | #ifndef QT_NO_PRINTER
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| 192 | MDIWindow* m = (MDIWindow*)ws->activeWindow();
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| 193 | if ( m )
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| 194 | m->print( printer );
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| 195 | #endif
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| 196 | }
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| 197 |
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| 198 |
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| 199 | void ApplicationWindow::closeWindow()
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| 200 | {
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| 201 | MDIWindow* m = (MDIWindow*)ws->activeWindow();
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| 202 | if ( m )
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| 203 | m->close();
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| 204 | }
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| 205 |
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| 206 | void ApplicationWindow::about()
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| 207 | {
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| 208 | QMessageBox::about( this, "Qt Application Example",
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| 209 | "This example demonstrates simple use of\n "
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| 210 | "Qt's Multiple Document Interface (MDI).");
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| 211 | }
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| 212 |
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| 213 |
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| 214 | void ApplicationWindow::aboutQt()
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| 215 | {
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| 216 | QMessageBox::aboutQt( this, "Qt Application Example" );
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| 217 | }
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| 218 |
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| 219 |
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| 220 | void ApplicationWindow::windowsMenuAboutToShow()
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| 221 | {
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| 222 | windowsMenu->clear();
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| 223 | int cascadeId = windowsMenu->insertItem("&Cascade", ws, SLOT(cascade() ) );
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| 224 | int tileId = windowsMenu->insertItem("&Tile", ws, SLOT(tile() ) );
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| 225 | int horTileId = windowsMenu->insertItem("Tile &Horizontally", this, SLOT(tileHorizontal() ) );
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| 226 | if ( ws->windowList().isEmpty() ) {
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| 227 | windowsMenu->setItemEnabled( cascadeId, FALSE );
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| 228 | windowsMenu->setItemEnabled( tileId, FALSE );
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| 229 | windowsMenu->setItemEnabled( horTileId, FALSE );
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| 230 | }
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| 231 | windowsMenu->insertSeparator();
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| 232 | QWidgetList windows = ws->windowList();
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| 233 | for ( int i = 0; i < int(windows.count()); ++i ) {
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| 234 | int id = windowsMenu->insertItem(windows.at(i)->caption(),
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| 235 | this, SLOT( windowsMenuActivated( int ) ) );
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| 236 | windowsMenu->setItemParameter( id, i );
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| 237 | windowsMenu->setItemChecked( id, ws->activeWindow() == windows.at(i) );
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| 238 | }
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| 239 | }
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| 240 |
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| 241 | void ApplicationWindow::windowsMenuActivated( int id )
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| 242 | {
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| 243 | QWidget* w = ws->windowList().at( id );
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| 244 | if ( w )
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| 245 | w->showNormal();
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| 246 | w->setFocus();
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| 247 | }
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| 248 |
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| 249 | void ApplicationWindow::tileHorizontal()
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| 250 | {
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| 251 | // primitive horizontal tiling
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| 252 | QWidgetList windows = ws->windowList();
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| 253 | if ( !windows.count() )
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| 254 | return;
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| 255 |
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| 256 | int heightForEach = ws->height() / windows.count();
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| 257 | int y = 0;
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| 258 | for ( int i = 0; i < int(windows.count()); ++i ) {
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| 259 | QWidget *window = windows.at(i);
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| 260 | if ( window->testWState( WState_Maximized ) ) {
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| 261 | // prevent flicker
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| 262 | window->hide();
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| 263 | window->showNormal();
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| 264 | }
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| 265 | int preferredHeight = window->minimumHeight()+window->parentWidget()->baseSize().height();
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| 266 | int actHeight = QMAX(heightForEach, preferredHeight);
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| 267 |
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| 268 | window->parentWidget()->setGeometry( 0, y, ws->width(), actHeight );
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| 269 | y += actHeight;
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| 270 | }
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| 271 | }
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| 272 |
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| 273 | void ApplicationWindow::closeEvent( QCloseEvent *e )
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| 274 | {
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| 275 | QWidgetList windows = ws->windowList();
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| 276 | if ( windows.count() ) {
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| 277 | for ( int i = 0; i < int(windows.count()); ++i ) {
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| 278 | QWidget *window = windows.at( i );
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| 279 | if ( !window->close() ) {
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| 280 | e->ignore();
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| 281 | return;
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| 282 | }
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| 283 | }
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| 284 | }
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| 285 |
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| 286 | QMainWindow::closeEvent( e );
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| 287 | }
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| 288 |
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| 289 | MDIWindow::MDIWindow( QWidget* parent, const char* name, int wflags )
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| 290 | : QMainWindow( parent, name, wflags )
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| 291 | {
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| 292 | mmovie = 0;
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| 293 | medit = new QTextEdit( this );
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| 294 | setFocusProxy( medit );
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| 295 | setCentralWidget( medit );
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| 296 | }
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| 297 |
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| 298 | MDIWindow::~MDIWindow()
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| 299 | {
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| 300 | delete mmovie;
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| 301 | }
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| 302 |
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| 303 | void MDIWindow::closeEvent( QCloseEvent *e )
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| 304 | {
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| 305 | if ( medit->isModified() ) {
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| 306 | switch( QMessageBox::warning( this, "Save Changes",
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| 307 | tr("Save changes to %1?").arg( caption() ),
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| 308 | tr("Yes"), tr("No"), tr("Cancel") ) ) {
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| 309 | case 0:
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| 310 | {
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| 311 | save();
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| 312 | if ( !filename.isEmpty() )
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| 313 | e->accept();
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| 314 | else
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| 315 | e->ignore();
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| 316 | }
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| 317 | break;
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| 318 | case 1:
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| 319 | e->accept();
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| 320 | break;
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| 321 | default:
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| 322 | e->ignore();
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| 323 | break;
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| 324 | }
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| 325 | } else {
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| 326 | e->accept();
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| 327 | }
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| 328 | }
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| 329 |
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| 330 | void MDIWindow::load( const QString& fn )
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| 331 | {
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| 332 | filename = fn;
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| 333 | QFile f( filename );
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| 334 | if ( !f.open( IO_ReadOnly ) )
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| 335 | return;
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| 336 |
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| 337 | if(fn.contains(".gif")) {
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| 338 | QWidget * tmp=new QWidget(this);
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| 339 | setFocusProxy(tmp);
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| 340 | setCentralWidget(tmp);
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| 341 | medit->hide();
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| 342 | delete medit;
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| 343 | QMovie * qm=new QMovie(fn);
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| 344 | #ifdef Q_WS_QWS // temporary speed-test hack
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| 345 | qm->setDisplayWidget(tmp);
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| 346 | #endif
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| 347 | tmp->setBackgroundMode(QWidget::NoBackground);
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| 348 | tmp->show();
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| 349 | mmovie=qm;
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| 350 | } else {
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| 351 | mmovie = 0;
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| 352 |
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| 353 | QTextStream t(&f);
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| 354 | QString s = t.read();
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| 355 | medit->setText( s );
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| 356 | f.close();
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| 357 |
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| 358 |
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| 359 | }
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| 360 | setCaption( filename );
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| 361 | emit message( QString("Loaded document %1").arg(filename), 2000 );
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| 362 | }
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| 363 |
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| 364 | void MDIWindow::save()
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| 365 | {
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| 366 | if ( filename.isEmpty() ) {
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| 367 | saveAs();
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| 368 | return;
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| 369 | }
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| 370 |
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| 371 | QString text = medit->text();
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| 372 | QFile f( filename );
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| 373 | if ( !f.open( IO_WriteOnly ) ) {
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| 374 | emit message( QString("Could not write to %1").arg(filename),
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| 375 | 2000 );
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| 376 | return;
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| 377 | }
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| 378 |
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| 379 | QTextStream t( &f );
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| 380 | t << text;
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| 381 | f.close();
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| 382 |
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| 383 | setCaption( filename );
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| 384 |
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| 385 | emit message( QString( "File %1 saved" ).arg( filename ), 2000 );
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| 386 | }
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| 387 |
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| 388 | void MDIWindow::saveAs()
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| 389 | {
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| 390 | QString fn = QFileDialog::getSaveFileName( filename, QString::null, this );
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| 391 | if ( !fn.isEmpty() ) {
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| 392 | filename = fn;
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| 393 | save();
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| 394 | } else {
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| 395 | emit message( "Saving aborted", 2000 );
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| 396 | }
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| 397 | }
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| 398 |
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| 399 | void MDIWindow::print( QPrinter* printer)
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| 400 | {
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| 401 | #ifndef QT_NO_PRINTER
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| 402 | int pageNo = 1;
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| 403 |
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| 404 | if ( printer->setup(this) ) { // printer dialog
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| 405 | printer->setFullPage( TRUE );
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| 406 | emit message( "Printing...", 0 );
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| 407 | QPainter p;
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| 408 | if ( !p.begin( printer ) )
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| 409 | return; // paint on printer
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| 410 | QPaintDeviceMetrics metrics( p.device() );
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| 411 | int dpiy = metrics.logicalDpiY();
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| 412 | int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins
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| 413 | QRect body( margin, margin, metrics.width() - 2*margin, metrics.height() - 2*margin );
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| 414 | QSimpleRichText richText( QStyleSheet::convertFromPlainText(medit->text()),
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| 415 | QFont(),
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| 416 | medit->context(),
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| 417 | medit->styleSheet(),
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| 418 | medit->mimeSourceFactory(),
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| 419 | body.height() );
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| 420 | richText.setWidth( &p, body.width() );
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| 421 | QRect view( body );
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| 422 | int page = 1;
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| 423 | do {
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| 424 | richText.draw( &p, body.left(), body.top(), view, colorGroup() );
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| 425 | view.moveBy( 0, body.height() );
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|---|
| 426 | p.translate( 0 , -body.height() );
|
|---|
| 427 | p.drawText( view.right() - p.fontMetrics().width( QString::number( page ) ),
|
|---|
| 428 | view.bottom() + p.fontMetrics().ascent() + 5, QString::number( page ) );
|
|---|
| 429 | if ( view.top() >= richText.height() )
|
|---|
| 430 | break;
|
|---|
| 431 | QString msg( "Printing (page " );
|
|---|
| 432 | msg += QString::number( ++pageNo );
|
|---|
| 433 | msg += ")...";
|
|---|
| 434 | emit message( msg, 0 );
|
|---|
| 435 | printer->newPage();
|
|---|
| 436 | page++;
|
|---|
| 437 | } while (TRUE);
|
|---|
| 438 | }
|
|---|
| 439 | #endif
|
|---|
| 440 | }
|
|---|
