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.
237 lines
8.4 KiB
237 lines
8.4 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/hello/hello.doc:5 -->
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|
<title>Hello, World</title>
|
|
<style type="text/css"><!--
|
|
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>Hello, World</h1>
|
|
|
|
|
|
<p>
|
|
This example brings up the words "Hello, World" moving up and down,
|
|
and in different colors.
|
|
<p> <hr>
|
|
<p> Header file:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/hello.h 3.3.8 edited Jan 11 14:37 $
|
|
**
|
|
** Copyright (C) 1992-2007 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.
|
|
**
|
|
*****************************************************************************/
|
|
|
|
#ifndef HELLO_H
|
|
#define HELLO_H
|
|
|
|
#include <<a href="tqwidget-h.html">tqwidget.h</a>>
|
|
|
|
|
|
class Hello : public <a href="tqwidget.html">TQWidget</a>
|
|
{
|
|
<a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
|
|
public:
|
|
Hello( const char *text, TQWidget *parent=0, const char *name=0 );
|
|
signals:
|
|
void clicked();
|
|
protected:
|
|
void mouseReleaseEvent( <a href="qmouseevent.html">TQMouseEvent</a> * );
|
|
void paintEvent( <a href="tqpaintevent.html">TQPaintEvent</a> * );
|
|
private slots:
|
|
void animate();
|
|
private:
|
|
<a href="tqstring.html">TQString</a> t;
|
|
int b;
|
|
};
|
|
|
|
#endif
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Implementation:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/hello.cpp 3.3.8 edited Jan 11 14:37 $
|
|
**
|
|
** Copyright (C) 1992-2007 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 "hello.h"
|
|
#include <<a href="qpushbutton-h.html">ntqpushbutton.h</a>>
|
|
#include <<a href="tqtimer-h.html">tqtimer.h</a>>
|
|
#include <<a href="tqpainter-h.html">tqpainter.h</a>>
|
|
#include <<a href="tqpixmap-h.html">tqpixmap.h</a>>
|
|
|
|
|
|
/*
|
|
Constructs a Hello widget. Starts a 40 ms animation timer.
|
|
*/
|
|
|
|
<a name="f473"></a>Hello::Hello( const char *text, TQWidget *parent, const char *name )
|
|
: <a href="tqwidget.html">TQWidget</a>(parent,name), t(text), b(0)
|
|
{
|
|
<a href="tqtimer.html">TQTimer</a> *timer = new <a href="tqtimer.html">TQTimer</a>(this);
|
|
<a name="x1640"></a> <a href="tqobject.html#connect">connect</a>( timer, TQ_SIGNAL(<a href="tqtimer.html#timeout">timeout</a>()), TQ_SLOT(animate()) );
|
|
<a name="x1639"></a> timer-><a href="tqtimer.html#start">start</a>( 40 );
|
|
|
|
<a href="tqwidget.html#resize">resize</a>( 260, 130 );
|
|
}
|
|
|
|
|
|
/*
|
|
This private slot is called each time the timer fires.
|
|
*/
|
|
|
|
void <a name="f474"></a>Hello::animate()
|
|
{
|
|
b = (b + 1) & 15;
|
|
<a href="tqwidget.html#repaint">repaint</a>( FALSE );
|
|
}
|
|
|
|
|
|
/*
|
|
Handles mouse button release events for the Hello widget.
|
|
|
|
We emit the clicked() signal when the mouse is released inside
|
|
the widget.
|
|
*/
|
|
|
|
<a name="x1641"></a>void Hello::<a href="tqwidget.html#mouseReleaseEvent">mouseReleaseEvent</a>( <a href="qmouseevent.html">TQMouseEvent</a> *e )
|
|
{
|
|
if ( <a href="tqwidget.html#rect">rect</a>().contains( e-><a href="qmouseevent.html#pos">pos</a>() ) )
|
|
emit clicked();
|
|
}
|
|
|
|
|
|
/*
|
|
Handles paint events for the Hello widget.
|
|
|
|
Flicker-free update. The text is first drawn in the pixmap and the
|
|
pixmap is then blt'ed to the screen.
|
|
*/
|
|
|
|
void Hello::<a href="tqwidget.html#paintEvent">paintEvent</a>( <a href="tqpaintevent.html">TQPaintEvent</a> * )
|
|
{
|
|
static int sin_tbl[16] = {
|
|
0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38};
|
|
|
|
if ( t.isEmpty() )
|
|
return;
|
|
|
|
// 1: Compute some sizes, positions etc.
|
|
<a href="tqfontmetrics.html">TQFontMetrics</a> fm = <a href="tqwidget.html#fontMetrics">fontMetrics</a>();
|
|
<a name="x1631"></a> int w = fm.<a href="tqfontmetrics.html#width">width</a>(t) + 20;
|
|
<a name="x1630"></a> int h = fm.<a href="tqfontmetrics.html#height">height</a>() * 2;
|
|
int pmx = <a href="tqwidget.html#width">width</a>()/2 - w/2;
|
|
int pmy = <a href="tqwidget.html#height">height</a>()/2 - h/2;
|
|
|
|
// 2: Create the pixmap and fill it with the widget's background
|
|
<a href="tqpixmap.html">TQPixmap</a> pm( w, h );
|
|
<a name="x1638"></a> pm.<a href="tqpixmap.html#fill">fill</a>( this, pmx, pmy );
|
|
|
|
// 3: Paint the pixmap. Cool wave effect
|
|
<a href="tqpainter.html">TQPainter</a> p;
|
|
int x = 10;
|
|
<a name="x1629"></a> int y = h/2 + fm.<a href="tqfontmetrics.html#descent">descent</a>();
|
|
int i = 0;
|
|
<a name="x1633"></a> p.<a href="tqpainter.html#begin">begin</a>( &pm );
|
|
<a name="x1636"></a> p.<a href="tqpainter.html#setFont">setFont</a>( <a href="tqwidget.html#font">font</a>() );
|
|
while ( !t[i].isNull() ) {
|
|
int i16 = (b+i) & 15;
|
|
p.<a href="tqpainter.html#setPen">setPen</a>( TQColor((15-i16)*16,255,255,TQColor::Hsv) );
|
|
p.<a href="tqpainter.html#drawText">drawText</a>( x, y-sin_tbl[i16]*h/800, t.mid(i,1), 1 );
|
|
x += fm.<a href="tqfontmetrics.html#width">width</a>( t[i] );
|
|
i++;
|
|
}
|
|
<a name="x1635"></a> p.<a href="tqpainter.html#end">end</a>();
|
|
|
|
// 4: Copy the pixmap to the Hello widget
|
|
<a href="tqimage.html#bitBlt">bitBlt</a>( this, pmx, pmy, &pm );
|
|
}
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Main:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $
|
|
**
|
|
** Copyright (C) 1992-2007 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 "hello.h"
|
|
#include <<a href="qapplication-h.html">ntqapplication.h</a>>
|
|
|
|
|
|
/*
|
|
The program starts here. It parses the command line and builds a message
|
|
string to be displayed by the Hello widget.
|
|
*/
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
<a href="ntqapplication.html">TQApplication</a> a(argc,argv);
|
|
<a href="tqstring.html">TQString</a> s;
|
|
for ( int i=1; i<argc; i++ ) {
|
|
s += argv[i];
|
|
if ( i<argc-1 )
|
|
s += " ";
|
|
}
|
|
if ( s.<a href="tqstring.html#isEmpty">isEmpty</a>() )
|
|
s = "Hello, World";
|
|
Hello h( s );
|
|
#ifndef TQT_NO_WIDGET_TOPEXTRA // for TQt/Embedded minimal build
|
|
h.<a href="tqwidget.html#setCaption">setCaption</a>( "TQt says hello" );
|
|
#endif
|
|
TQObject::<a href="tqobject.html#connect">connect</a>( &h, TQ_SIGNAL(clicked()), &a, TQ_SLOT(<a href="ntqapplication.html#quit">quit</a>()) );
|
|
<a name="x1650"></a> h.<a href="tqwidget.html#setFont">setFont</a>( TQFont("times",32,TQFont::Bold) ); // default font
|
|
<a name="x1648"></a> h.<a href="tqwidget.html#setBackgroundColor">setBackgroundColor</a>( TQt::white ); // default bg color
|
|
a.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( &h );
|
|
h.<a href="tqwidget.html#show">show</a>();
|
|
return a.<a href="ntqapplication.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 © 2007
|
|
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|
<td align=right><div align=right>TQt 3.3.8</div>
|
|
</table></div></address></body>
|
|
</html>
|