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356 lines
9.0 KiB
356 lines
9.0 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 "menu.h"
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#include <qcursor.h>
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#include <qpopupmenu.h>
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#include <qapplication.h>
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#include <qmessagebox.h>
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#include <qpixmap.h>
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#include <qpainter.h>
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/* XPM */
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static const char * p1_xpm[] = {
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"16 16 3 1",
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" c None",
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". c #000000000000",
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"X c #FFFFFFFF0000",
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" ",
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" ",
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" .... ",
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" .XXXX. ",
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" .............. ",
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" .XXXXXXXXXXXX. ",
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" .XXXXXXXXXXXX. ",
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" .XXXXXXXXXXXX. ",
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" .XXXXXXXXXXXX. ",
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" .XXXXXXXXXXXX. ",
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" .XXXXXXXXXXXX. ",
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" .XXXXXXXXXXXX. ",
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" .XXXXXXXXXXXX. ",
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" .XXXXXXXXXXXX. ",
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" .............. ",
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" "};
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/* XPM */
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static const char * p2_xpm[] = {
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"16 16 3 1",
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" c None",
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". c #000000000000",
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"X c #FFFFFFFFFFFF",
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" ",
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" ...... ",
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" .XXX.X. ",
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" .XXX.XX. ",
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" .XXX.XXX. ",
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" .XXX..... ",
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" .XXXXXXX. ",
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" .XXXXXXX. ",
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" .XXXXXXX. ",
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" .XXXXXXX. ",
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" .XXXXXXX. ",
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" .XXXXXXX. ",
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" .XXXXXXX. ",
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" ......... ",
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" ",
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" "};
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/* XPM */
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static const char * p3_xpm[] = {
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"16 16 3 1",
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" c None",
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". c #000000000000",
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"X c #FFFFFFFFFFFF",
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" ",
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" ",
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" ......... ",
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" ........... ",
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" ........ .. ",
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" ........... ",
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" ........... ",
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" ........... ",
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" ........... ",
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" ...XXXXX... ",
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" ...XXXXX... ",
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" ...XXXXX... ",
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" ...XXXXX... ",
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" ......... ",
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" ",
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" "};
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/*
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Auxiliary class to provide fancy menu items with different
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fonts. Used for the "bold" and "underline" menu items in the options
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menu.
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*/
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class MyMenuItem : public QCustomMenuItem
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{
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public:
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MyMenuItem( const QString& s, const QFont& f )
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: string( s ), font( f ){};
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~MyMenuItem(){}
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void paint( QPainter* p, const QColorGroup& /*cg*/, bool /*act*/, bool /*enabled*/, int x, int y, int w, int h )
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{
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p->setFont ( font );
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p->drawText( x, y, w, h, AlignLeft | AlignVCenter | DontClip | ShowPrefix, string );
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}
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QSize sizeHint()
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{
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return QFontMetrics( font ).size( AlignLeft | AlignVCenter | ShowPrefix | DontClip, string );
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}
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private:
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QString string;
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QFont font;
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};
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MenuExample::MenuExample( QWidget *parent, const char *name )
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: QWidget( parent, name )
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{
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QPixmap p1( p1_xpm );
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QPixmap p2( p2_xpm );
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QPixmap p3( p3_xpm );
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QPopupMenu *print = new QPopupMenu( this );
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Q_CHECK_PTR( print );
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print->insertTearOffHandle();
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print->insertItem( "&Print to printer", this, SLOT(printer()) );
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print->insertItem( "Print to &file", this, SLOT(file()) );
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print->insertItem( "Print to fa&x", this, SLOT(fax()) );
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print->insertSeparator();
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print->insertItem( "Printer &Setup", this, SLOT(printerSetup()) );
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QPopupMenu *file = new QPopupMenu( this );
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Q_CHECK_PTR( file );
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file->insertItem( p1, "&Open", this, SLOT(open()), CTRL+Key_O );
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file->insertItem( p2, "&New", this, SLOT(news()), CTRL+Key_N );
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file->insertItem( p3, "&Save", this, SLOT(save()), CTRL+Key_S );
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file->insertItem( "&Close", this, SLOT(closeDoc()), CTRL+Key_W );
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file->insertSeparator();
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file->insertItem( "&Print", print, CTRL+Key_P );
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file->insertSeparator();
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file->insertItem( "E&xit", qApp, SLOT(quit()), CTRL+Key_Q );
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QPopupMenu *edit = new QPopupMenu( this );
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Q_CHECK_PTR( edit );
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int undoID = edit->insertItem( "&Undo", this, SLOT(undo()) );
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int redoID = edit->insertItem( "&Redo", this, SLOT(redo()) );
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edit->setItemEnabled( undoID, FALSE );
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edit->setItemEnabled( redoID, FALSE );
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QPopupMenu* options = new QPopupMenu( this );
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Q_CHECK_PTR( options );
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options->insertTearOffHandle();
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options->setCaption("Options");
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options->insertItem( "&Normal Font", this, SLOT(normal()) );
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options->insertSeparator();
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options->polish(); // adjust system settings
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QFont f = options->font();
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f.setBold( TRUE );
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boldID = options->insertItem( new MyMenuItem( "Bold", f ) );
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options->setAccel( CTRL+Key_B, boldID );
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options->connectItem( boldID, this, SLOT(bold()) );
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f = font();
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f.setUnderline( TRUE );
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underlineID = options->insertItem( new MyMenuItem( "Underline", f ) );
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options->setAccel( CTRL+Key_U, underlineID );
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options->connectItem( underlineID, this, SLOT(underline()) );
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isBold = FALSE;
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isUnderline = FALSE;
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options->setCheckable( TRUE );
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QPopupMenu *help = new QPopupMenu( this );
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Q_CHECK_PTR( help );
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help->insertItem( "&About", this, SLOT(about()), CTRL+Key_H );
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help->insertItem( "About &Qt", this, SLOT(aboutQt()) );
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// If we used a QMainWindow we could use its built-in menuBar().
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menu = new QMenuBar( this );
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Q_CHECK_PTR( menu );
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menu->insertItem( "&File", file );
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menu->insertItem( "&Edit", edit );
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menu->insertItem( "&Options", options );
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menu->insertSeparator();
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menu->insertItem( "&Help", help );
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menu->setSeparator( QMenuBar::InWindowsStyle );
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QLabel *msg = new QLabel( this );
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Q_CHECK_PTR( msg );
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msg->setText( "A context menu is available.\n"
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"Invoke it by right-clicking or by"
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" pressing the 'context' button." );
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msg->setGeometry( 0, height() - 60, width(), 60 );
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msg->setAlignment( AlignCenter );
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label = new QLabel( this );
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Q_CHECK_PTR( label );
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label->setGeometry( 20, rect().center().y()-20, width()-40, 40 );
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label->setFrameStyle( QFrame::Box | QFrame::Raised );
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label->setLineWidth( 1 );
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label->setAlignment( AlignCenter );
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connect( this, SIGNAL(explain(const QString&)),
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label, SLOT(setText(const QString&)) );
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setMinimumSize( 100, 80 );
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setFocusPolicy( QWidget::ClickFocus );
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}
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void MenuExample::contextMenuEvent( QContextMenuEvent * )
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{
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QPopupMenu* contextMenu = new QPopupMenu( this );
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Q_CHECK_PTR( contextMenu );
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QLabel *caption = new QLabel( "<font color=darkblue><u><b>"
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"Context Menu</b></u></font>", this );
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caption->setAlignment( Qt::AlignCenter );
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contextMenu->insertItem( caption );
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contextMenu->insertItem( "&New", this, SLOT(news()), CTRL+Key_N );
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contextMenu->insertItem( "&Open...", this, SLOT(open()), CTRL+Key_O );
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contextMenu->insertItem( "&Save", this, SLOT(save()), CTRL+Key_S );
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QPopupMenu *submenu = new QPopupMenu( this );
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Q_CHECK_PTR( submenu );
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submenu->insertItem( "&Print to printer", this, SLOT(printer()) );
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submenu->insertItem( "Print to &file", this, SLOT(file()) );
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submenu->insertItem( "Print to fa&x", this, SLOT(fax()) );
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contextMenu->insertItem( "&Print", submenu );
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contextMenu->exec( QCursor::pos() );
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delete contextMenu;
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}
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void MenuExample::open()
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{
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emit explain( "File/Open selected" );
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}
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void MenuExample::news()
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{
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emit explain( "File/New selected" );
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}
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void MenuExample::save()
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{
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emit explain( "File/Save selected" );
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}
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void MenuExample::closeDoc()
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{
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emit explain( "File/Close selected" );
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}
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void MenuExample::undo()
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{
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emit explain( "Edit/Undo selected" );
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}
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void MenuExample::redo()
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{
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emit explain( "Edit/Redo selected" );
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}
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void MenuExample::normal()
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{
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isBold = FALSE;
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isUnderline = FALSE;
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QFont font;
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label->setFont( font );
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menu->setItemChecked( boldID, isBold );
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menu->setItemChecked( underlineID, isUnderline );
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emit explain( "Options/Normal selected" );
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}
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void MenuExample::bold()
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{
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isBold = !isBold;
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QFont font;
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font.setBold( isBold );
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font.setUnderline( isUnderline );
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label->setFont( font );
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menu->setItemChecked( boldID, isBold );
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emit explain( "Options/Bold selected" );
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}
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void MenuExample::underline()
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{
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isUnderline = !isUnderline;
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QFont font;
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font.setBold( isBold );
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font.setUnderline( isUnderline );
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label->setFont( font );
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menu->setItemChecked( underlineID, isUnderline );
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emit explain( "Options/Underline selected" );
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}
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void MenuExample::about()
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{
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QMessageBox::about( this, "Qt Menu Example",
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"This example demonstrates simple use of Qt menus.\n"
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"You can cut and paste lines from it to your own\n"
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"programs." );
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}
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void MenuExample::aboutQt()
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{
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QMessageBox::aboutQt( this, "Qt Menu Example" );
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}
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void MenuExample::printer()
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{
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emit explain( "File/Printer/Print selected" );
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}
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void MenuExample::file()
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{
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emit explain( "File/Printer/Print To File selected" );
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}
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void MenuExample::fax()
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{
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emit explain( "File/Printer/Print To Fax selected" );
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}
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void MenuExample::printerSetup()
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{
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emit explain( "File/Printer/Printer Setup selected" );
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}
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void MenuExample::resizeEvent( QResizeEvent * )
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{
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label->setGeometry( 20, rect().center().y()-20, width()-40, 40 );
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}
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int main( int argc, char ** argv )
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{
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QApplication a( argc, argv );
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MenuExample m;
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m.setCaption("Qt Examples - Menus");
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a.setMainWidget( &m );
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m.show();
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return a.exec();
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}
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