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- /****************************************************************************
- ** $Id: qt/life.cpp 3.0.3 edited Oct 12 12:18 $
- **
- ** 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.
- **
- *****************************************************************************/
-
- #include "life.h"
-
- #include <qpainter.h>
- #include <qdrawutil.h>
- #include <qcheckbox.h>
- #include <qevent.h>
- #include <qapplication.h>
-
- // The main game of life widget
-
- LifeWidget::LifeWidget( int s, QWidget *parent, const char *name )
- : QFrame( parent, name )
- {
- SCALE = s;
-
- maxi = maxj = 50;
- setMinimumSize( MINSIZE * SCALE + 2 * BORDER,
- MINSIZE * SCALE + 2 * BORDER );
- setMaximumSize( MAXSIZE * SCALE + 2 * BORDER,
- MAXSIZE * SCALE + 2 * BORDER );
- setSizeIncrement( SCALE, SCALE);
-
- clear();
- resize( maxi * SCALE + 2 * BORDER , maxj * SCALE + 2 * BORDER );
-
- }
-
-
- void LifeWidget::clear()
- {
- current = 0;
- for ( int t = 0; t < 2; t++ )
- for ( int i = 0; i < MAXSIZE + 2; i++ )
- for ( int j = 0; j < MAXSIZE + 2; j++ )
- cells[t][i][j] = FALSE;
-
- repaint();
- }
-
-
- // We assume that the size will never be beyond the maximum size set
- // this is not in general TRUE, but in practice it's good enough for
- // this program
-
- void LifeWidget::resizeEvent( QResizeEvent * e )
- {
- maxi = (e->size().width() - 2 * BORDER) / SCALE;
- maxj = (e->size().height() - 2 * BORDER) / SCALE;
- }
-
-
- void LifeWidget::setPoint( int i, int j )
- {
- if ( i < 1 || i > maxi || j < 1 || j > maxi )
- return;
- cells[current][i][j] = TRUE;
- repaint( index2pos(i), index2pos(j), SCALE, SCALE, FALSE );
- }
-
-
- void LifeWidget::mouseHandle( const QPoint &pos )
- {
- int i = pos2index( pos.x() );
- int j = pos2index( pos.y() );
- setPoint( i, j );
- }
-
-
- void LifeWidget::mouseMoveEvent( QMouseEvent *e )
- {
- mouseHandle( e->pos() );
- }
-
-
- void LifeWidget::mousePressEvent( QMouseEvent *e )
- {
- if ( e->button() == QMouseEvent::LeftButton )
- mouseHandle( e->pos() );
- }
-
-
- void LifeWidget::nextGeneration()
- {
- for ( int i = 1; i <= MAXSIZE; i++ ) {
- for ( int j = 1; j <= MAXSIZE; j++ ) {
- int t = cells[current][i - 1][j - 1]
- + cells[current][i - 1][j]
- + cells[current][i - 1][j + 1]
- + cells[current][i][j - 1]
- + cells[current][i][j + 1]
- + cells[current][i + 1][j - 1]
- + cells[current][i + 1][j]
- + cells[current][i + 1][j + 1];
-
- cells[!current][i][j] = ( t == 3 ||
- t == 2 && cells[current][i][j] );
- }
- }
- current = !current;
- repaint( FALSE ); // repaint without erase
- }
-
-
- void LifeWidget::paintEvent( QPaintEvent * e )
- {
- int starti = pos2index( e->rect().left() );
- int stopi = pos2index( e->rect().right() );
- int startj = pos2index( e->rect().top() );
- int stopj = pos2index( e->rect().bottom() );
-
- if (stopi > maxi)
- stopi = maxi;
- if (stopj > maxj)
- stopj = maxj;
-
- QPainter paint( this );
- for ( int i = starti; i <= stopi; i++ ) {
- for ( int j = startj; j <= stopj; j++ ) {
- if ( cells[current][i][j] )
- qDrawShadePanel( &paint, index2pos( i ), index2pos( j ),
- SCALE - 1, SCALE - 1, colorGroup() );
- else if ( cells[!current][i][j] )
- erase(index2pos( i ), index2pos( j ), SCALE - 1, SCALE - 1);
- }
- }
- drawFrame( &paint );
- }
-