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/****************************************************************************
** $Id$
**
** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
**
** This file is part of an example program for Qt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
import org.kde.qt.*;
class PictureDisplay extends TQWidget // picture display widget
{
static void paintCar( TQPainter p ) // paint a car
{
TQPointArray a = new TQPointArray();
TQBrush brush = new TQBrush( Qt.yellow(), Qt.SolidPattern );
p.setBrush( brush ); // use solid, yellow brush
a.setPoints( 5, new short[] { 50,50, 350,50, 450,120, 450,250, 50,250 } );
p.drawPolygon( a ); // draw car body
TQFont f = new TQFont( "courier", 12, TQFont.Bold, false );
p.setFont( f );
TQColor windowColor = new TQColor( 120, 120, 255 ); // a light blue color
brush.setColor( windowColor ); // set this brush color
p.setBrush( brush ); // set brush
p.drawRect( 80, 80, 250, 70 ); // car window
p.drawText( 180, 80, 150, 70, Qt.AlignCenter, "-- Qt --\nTrolltech AS" );
TQPixmap pixmap = new TQPixmap();
if ( pixmap.load("flag.bmp") ) // load and draw image
p.drawPixmap( 100, 90, pixmap );
p.setBackgroundMode( Qt.OpaqueMode ); // set opaque mode
p.setBrush( Qt.DiagCrossPattern ); // black diagonal cross pattern
p.drawEllipse( 90, 210, 80, 80 ); // back wheel
p.setBrush( Qt.CrossPattern ); // black cross fill pattern
p.drawEllipse( 310, 210, 80, 80 ); // front wheel
}
private TQPicture pict;
private String name;
public PictureDisplay( String fileName )
{
pict = new TQPicture();
name = fileName;
if ( !pict.load(fileName) ) { // cannot load picture
pict = null;
name = "Not able to load picture: " + fileName;
}
}
protected void paintEvent( TQPaintEvent event )
{
TQPainter paint = new TQPainter( this ); // paint widget
if ( pict != null )
paint.drawPicture( pict ); // draw picture
else
paint.drawText( rect(), AlignCenter, name );
}
protected void keyPressEvent( TQKeyEvent k )
{
// switch ( tolower(k.ascii()) ) {
switch ( k.ascii() ) {
case 'r': // reload
pict.load( name );
update();
break;
case 'q': // quit
TQApplication.exit();
break;
}
}
static public void main( String[] args )
{
TQApplication a = new TQApplication( args ); // TQApplication retquired!
String fileName = "car.pic"; // default picture file name
if ( args.length == 1 ) // use argument as file name
fileName = args[0];
if ( !TQFile.exists(fileName) ) {
TQPicture pict = new TQPicture(); // our picture
TQPainter paint = new TQPainter(); // our painter
paint.begin( pict ); // begin painting onto picture
paintCar( paint ); // paint!
paint.end(); // painting done
pict.save( fileName ); // save picture
TQMessageBox.information(null, "Qt picture example", "Saved. Run me again!");
return;
} else {
PictureDisplay test = new PictureDisplay( fileName ); // create picture display
a.setMainWidget( test); // set main widget
test.show(); // show it
a.exec(); // start event loop
return;
}
}
static {
qtjava.initialize();
}
}
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