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131 lines
3.5 KiB
131 lines
3.5 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 TQt. 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 <ntqapplication.h>
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#include <ntqpainter.h>
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#include <ntqpicture.h>
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#include <ntqpixmap.h>
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#include <ntqwidget.h>
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#include <ntqmessagebox.h>
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#include <ntqfile.h>
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#include <ctype.h>
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void paintCar( TQPainter *p ) // paint a car
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{
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TQPointArray a;
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TQBrush brush( TQt::yellow, TQt::SolidPattern );
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p->setBrush( brush ); // use solid, yellow brush
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a.setPoints( 5, 50,50, 350,50, 450,120, 450,250, 50,250 );
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p->drawPolygon( a ); // draw car body
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TQFont f( "courier", 12, TQFont::Bold );
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p->setFont( f );
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TQColor windowColor( 120, 120, 255 ); // a light blue color
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brush.setColor( windowColor ); // set this brush color
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p->setBrush( brush ); // set brush
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p->drawRect( 80, 80, 250, 70 ); // car window
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p->drawText( 180, 80, 150, 70, TQt::AlignCenter, "-- TQt --\nTrolltech AS" );
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TQPixmap pixmap;
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if ( pixmap.load("flag.bmp") ) // load and draw image
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p->drawPixmap( 100, 85, pixmap );
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p->setBackgroundMode( TQt::OpaqueMode ); // set opaque mode
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p->setBrush( TQt::DiagCrossPattern ); // black diagonal cross pattern
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p->drawEllipse( 90, 210, 80, 80 ); // back wheel
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p->setBrush( TQt::CrossPattern ); // black cross fill pattern
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p->drawEllipse( 310, 210, 80, 80 ); // front wheel
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}
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class PictureDisplay : public TQWidget // picture display widget
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{
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public:
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PictureDisplay( const char *fileName );
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~PictureDisplay();
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protected:
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void paintEvent( TQPaintEvent * );
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void keyPressEvent( TQKeyEvent * );
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private:
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TQPicture *pict;
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TQString name;
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};
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PictureDisplay::PictureDisplay( const char *fileName )
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{
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pict = new TQPicture;
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name = fileName;
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if ( !pict->load(fileName) ) { // cannot load picture
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delete pict;
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pict = 0;
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name.sprintf( "Not able to load picture: %s", fileName );
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}
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}
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PictureDisplay::~PictureDisplay()
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{
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delete pict;
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}
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void PictureDisplay::paintEvent( TQPaintEvent * )
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{
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TQPainter paint( this ); // paint widget
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if ( pict )
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paint.drawPicture( *pict ); // draw picture
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else
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paint.drawText( rect(), AlignCenter, name );
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}
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void PictureDisplay::keyPressEvent( TQKeyEvent *k )
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{
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switch ( tolower(k->ascii()) ) {
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case 'r': // reload
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pict->load( name );
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update();
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break;
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case 'q': // quit
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TQApplication::exit();
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break;
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}
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}
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int main( int argc, char **argv )
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{
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TQApplication a( argc, argv ); // TQApplication required!
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const char *fileName = "car.pic"; // default picture file name
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if ( argc == 2 ) // use argument as file name
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fileName = argv[1];
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if ( !TQFile::exists(fileName) ) {
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TQPicture pict; // our picture
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TQPainter paint; // our painter
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paint.begin( &pict ); // begin painting onto picture
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paintCar( &paint ); // paint!
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paint.end(); // painting done
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pict.save( fileName ); // save picture
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TQMessageBox::information(0, "TQt Example - Picture", "Saved. Run me again!");
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return 0;
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} else {
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PictureDisplay test( fileName ); // create picture display
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a.setMainWidget( &test); // set main widget
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test.setCaption("TQt Example - Picture");
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test.show(); // show it
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return a.exec(); // start event loop
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}
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}
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