You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
2.3 KiB
100 lines
2.3 KiB
/****************************************************************************
|
|
**
|
|
** Copyright (C) 1992-2008 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 <qtimer.h>
|
|
#include <qpainter.h>
|
|
#include <qapplication.h>
|
|
#include <stdlib.h> // defines rand() function
|
|
|
|
#include "forever.h"
|
|
|
|
|
|
//
|
|
// Forever - a widget that draws rectangles forever.
|
|
//
|
|
|
|
//
|
|
// Constructs a Forever widget.
|
|
//
|
|
|
|
Forever::Forever( TQWidget *parent, const char *name )
|
|
: TQWidget( parent, name )
|
|
{
|
|
for (int a=0; a<numColors; a++) {
|
|
colors[a] = TQColor( rand()&255,
|
|
rand()&255,
|
|
rand()&255 );
|
|
}
|
|
rectangles = 0;
|
|
startTimer( 0 ); // run continuous timer
|
|
TQTimer * counter = new TQTimer( this );
|
|
connect( counter, SIGNAL(timeout()),
|
|
this, SLOT(updateCaption()) );
|
|
counter->start( 1000 );
|
|
}
|
|
|
|
|
|
void Forever::updateCaption()
|
|
{
|
|
TQString s;
|
|
s.sprintf( "TQt Example - Forever - %d rectangles/second", rectangles );
|
|
rectangles = 0;
|
|
setCaption( s );
|
|
}
|
|
|
|
|
|
//
|
|
// Handles paint events for the Forever widget.
|
|
//
|
|
|
|
void Forever::paintEvent( TQPaintEvent * )
|
|
{
|
|
TQPainter paint( this ); // painter object
|
|
int w = width();
|
|
int h = height();
|
|
if(w <= 0 || h <= 0)
|
|
return;
|
|
paint.setPen( NoPen ); // do not draw outline
|
|
paint.setBrush( colors[rand() % numColors]);// set random brush color
|
|
|
|
TQPoint p1( rand()%w, rand()%h ); // p1 = top left
|
|
TQPoint p2( rand()%w, rand()%h ); // p2 = bottom right
|
|
|
|
TQRect r( p1, p2 );
|
|
paint.drawRect( r ); // draw filled rectangle
|
|
}
|
|
|
|
//
|
|
// Handles timer events for the Forever widget.
|
|
//
|
|
|
|
void Forever::timerEvent( TQTimerEvent * )
|
|
{
|
|
for ( int i=0; i<100; i++ ) {
|
|
repaint( FALSE ); // repaint, don't erase
|
|
rectangles++;
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// Create and display Forever widget.
|
|
//
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
TQApplication a( argc, argv ); // create application object
|
|
Forever always; // create widget
|
|
always.resize( 400, 250 ); // start up with size 400x250
|
|
a.setMainWidget( &always ); // set as main widget
|
|
always.setCaption("TQt Example - Forever");
|
|
always.show(); // show widget
|
|
return a.exec(); // run event loop
|
|
}
|