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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/examples/life/life.doc:4 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Conway's Game of Life</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Conway's Game of Life</h1> <p> <hr><p> Header file:<p> <pre>/****************************************************************************** $Id: qt/life.h 3.0.5 edited Oct 12 2001 $**** 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.*******************************************************************************/#ifndef LIFE_H#define LIFE_H#include <<a href="qframe-h.html">qframe.h</a>>class LifeWidget : public <a href="qframe.html">QFrame</a>{ <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>public: LifeWidget( int s = 10, QWidget *parent = 0, const char *name = 0 ); void setPoint( int i, int j ); int maxCol() { return maxi; } int maxRow() { return maxj; }public slots: void nextGeneration(); void clear();protected: virtual void paintEvent( <a href="qpaintevent.html">QPaintEvent</a> * ); virtual void mouseMoveEvent( <a href="qmouseevent.html">QMouseEvent</a> * ); virtual void mousePressEvent( <a href="qmouseevent.html">QMouseEvent</a> * ); virtual void resizeEvent( <a href="qresizeevent.html">QResizeEvent</a> * ); void mouseHandle( const <a href="qpoint.html">QPoint</a> &pos );private: enum { MAXSIZE = 50, MINSIZE = 10, BORDER = 5 }; bool cells[2][MAXSIZE + 2][MAXSIZE + 2]; int current; int maxi, maxj; int pos2index( int x ) { return ( x - BORDER ) / SCALE + 1; } int index2pos( int i ) { return ( i - 1 ) * SCALE + BORDER; } int SCALE;};#endif // LIFE_H</pre><p> <hr><p> Implementation:<p> <pre>/****************************************************************************** $Id: qt/life.cpp 3.0.5 edited Oct 12 2001 $**** 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 <<a href="qpainter-h.html">qpainter.h</a>>#include <<a href="qdrawutil-h.html">qdrawutil.h</a>>#include <<a href="qcheckbox-h.html">qcheckbox.h</a>>#include <<a href="qevent-h.html">qevent.h</a>>#include <<a href="qapplication-h.html">qapplication.h</a>>// The main game of life widget<a name="f516"></a>LifeWidget::LifeWidget( int s, QWidget *parent, const char *name ) : <a href="qframe.html">QFrame</a>( parent, name ){ SCALE = s; maxi = maxj = 50; <a href="qwidget.html#setMinimumSize">setMinimumSize</a>( MINSIZE * SCALE + 2 * BORDER, MINSIZE * SCALE + 2 * BORDER ); <a href="qwidget.html#setMaximumSize">setMaximumSize</a>( MAXSIZE * SCALE + 2 * BORDER, MAXSIZE * SCALE + 2 * BORDER ); <a href="qwidget.html#setSizeIncrement">setSizeIncrement</a>( SCALE, SCALE); clear(); <a href="qwidget.html#resize">resize</a>( maxi * SCALE + 2 * BORDER , maxj * SCALE + 2 * BORDER );}void <a name="f517"></a>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; <a href="qwidget.html#repaint">repaint</a>();}// 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<a name="x1878"></a>void LifeWidget::<a href="qframe.html#resizeEvent">resizeEvent</a>( <a href="qresizeevent.html">QResizeEvent</a> * e ){<a name="x1884"></a> maxi = (e-><a href="qresizeevent.html#size">size</a>().width() - 2 * BORDER) / SCALE; maxj = (e-><a href="qresizeevent.html#size">size</a>().height() - 2 * BORDER) / SCALE;}void <a name="f518"></a>LifeWidget::setPoint( int i, int j ){ if ( i < 1 || i > maxi || j < 1 || j > maxi ) return; cells[current][i][j] = TRUE; <a href="qwidget.html#repaint">repaint</a>( index2pos(i), index2pos(j), SCALE, SCALE, FALSE );}void <a name="f519"></a>LifeWidget::mouseHandle( const <a href="qpoint.html">QPoint</a> &pos ){<a name="x1882"></a> int i = pos2index( pos.<a href="qpoint.html#x">x</a>() );<a name="x1883"></a> int j = pos2index( pos.<a href="qpoint.html#y">y</a>() ); setPoint( i, j );}<a name="x1885"></a>void LifeWidget::<a href="qwidget.html#mouseMoveEvent">mouseMoveEvent</a>( <a href="qmouseevent.html">QMouseEvent</a> *e ){<a name="x1880"></a> mouseHandle( e-><a href="qmouseevent.html#pos">pos</a>() );}<a name="x1886"></a>void LifeWidget::<a href="qwidget.html#mousePressEvent">mousePressEvent</a>( <a href="qmouseevent.html">QMouseEvent</a> *e ){<a name="x1879"></a> if ( e-><a href="qmouseevent.html#button">button</a>() == QMouseEvent::LeftButton ) mouseHandle( e-><a href="qmouseevent.html#pos">pos</a>() );}void <a name="f520"></a>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; <a href="qwidget.html#repaint">repaint</a>( FALSE ); // repaint without erase}<a name="x1877"></a>void LifeWidget::<a href="qframe.html#paintEvent">paintEvent</a>( <a href="qpaintevent.html">QPaintEvent</a> * e ){<a name="x1881"></a> int starti = pos2index( e-><a href="qpaintevent.html#rect">rect</a>().left() ); int stopi = pos2index( e-><a href="qpaintevent.html#rect">rect</a>().right() ); int startj = pos2index( e-><a href="qpaintevent.html#rect">rect</a>().top() ); int stopj = pos2index( e-><a href="qpaintevent.html#rect">rect</a>().bottom() ); if (stopi > maxi) stopi = maxi; if (stopj > maxj) stopj = maxj; <a href="qpainter.html">QPainter</a> paint( this ); for ( int i = starti; i <= stopi; i++ ) { for ( int j = startj; j <= stopj; j++ ) { if ( cells[current][i][j] ) <a href="qpainter.html#qDrawShadePanel">qDrawShadePanel</a>( &paint, index2pos( i ), index2pos( j ), SCALE - 1, SCALE - 1, colorGroup() ); else if ( cells[!current][i][j] ) <a href="qwidget.html#erase">erase</a>(index2pos( i ), index2pos( j ), SCALE - 1, SCALE - 1); } } <a href="qframe.html#drawFrame">drawFrame</a>( &paint );}</pre><p> <hr><p> Main:<p> <pre>/****************************************************************************** $Id: qt/main.cpp 3.0.5 edited Oct 12 2001 $**** 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 "lifedlg.h"#include <<a href="qapplication-h.html">qapplication.h</a>>#include <stdlib.h>void usage(){ <a href="qapplication.html#qWarning">qWarning</a>( "Usage: life [-scale scale]" );}int main( int argc, char **argv ){ <a href="qapplication.html">QApplication</a> a( argc, argv ); int scale = 10; for ( int i = 1; i < argc; i++ ){ <a href="qstring.html">QString</a> arg = argv[i]; if ( arg == "-scale" ) scale = atoi( argv[++i] ); else { usage(); exit(1); } } if ( scale < 2 ) scale = 2; LifeDialog *life = new LifeDialog( scale ); a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( life ); life-><a href="qwidget.html#setCaption">setCaption</a>("Qt Example - Life"); life-><a href="qwidget.html#show">show</a>(); return a.<a href="qapplication.html#exec">exec</a>();}</pre><p>See also <a href="examples.html">Examples</a>.<!-- eof --><p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>?? 快捷鍵說明
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