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<!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/qfd/qfd.doc:4 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Font Displayer</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>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr bgcolor="#E5E5E5">
<td valign=center>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Font Displayer</h1>

   
<p> 
This example program displays all characters of a font.
<p> <hr>
<p> Header file:
<p> <pre>/****************************************************************************
** $Id: qt/fontdisplayer.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 FontDisplayer_H
#define FontDisplayer_H

#include &lt;<a href="qframe-h.html">qframe.h</a>&gt;
#include &lt;<a href="qmainwindow-h.html">qmainwindow.h</a>&gt;

class TQSlider;

class FontRowTable : public <a href="qframe.html">TQFrame</a> {
    <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
public:
    FontRowTable( <a href="qwidget.html">TQWidget</a>* parent=0, const char* name=0 );

    <a href="qsize.html">TQSize</a> sizeHint() const;

signals:
    void fontInformation(const <a href="qstring.html">TQString</a>&amp;);

public slots:
    void setRow(int);
    void chooseFont();


protected:
    <a href="qsize.html">TQSize</a> cellSize() const;
    void paintEvent( <a href="qpaintevent.html">TQPaintEvent</a>* );
private:
    <a href="qfont.html">TQFont</a> tablefont;
    int row;
};

class FontDisplayer : public <a href="qmainwindow.html">TQMainWindow</a> {
    Q_OBJECT
public:
    FontDisplayer( <a href="qwidget.html">TQWidget</a>* parent=0, const char* name=0 );
};

#endif
</pre>

<p> <hr>
<p> Implementation:
<p> <pre>/****************************************************************************
** $Id: qt/fontdisplayer.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 "fontdisplayer.h"
#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a href="qslider-h.html">qslider.h</a>&gt;
#include &lt;<a href="qspinbox-h.html">qspinbox.h</a>&gt;
#include &lt;<a href="qpainter-h.html">qpainter.h</a>&gt;
#include &lt;<a href="qtoolbar-h.html">qtoolbar.h</a>&gt;
#include &lt;<a href="qstatusbar-h.html">qstatusbar.h</a>&gt;
#include &lt;<a href="qlabel-h.html">qlabel.h</a>&gt;
#include &lt;<a href="qpushbutton-h.html">qpushbutton.h</a>&gt;
#include &lt;<a href="qfontdialog-h.html">qfontdialog.h</a>&gt;
#include &lt;stdlib.h&gt;


<a name="f531"></a>FontRowTable::FontRowTable( <a href="qwidget.html">TQWidget</a>* parent, const char* name ) :
    <a href="qframe.html">TQFrame</a>(parent,name)
{
    <a href="qwidget.html#setBackgroundMode">setBackgroundMode</a>(PaletteBase);
    <a href="qframe.html#setFrameStyle">setFrameStyle</a>(Panel|Sunken);
    <a href="qframe.html#setMargin">setMargin</a>(8);
    setRow(0);
<a name="x1979"></a>    tablefont = TQApplication::<a href="qapplication.html#font">font</a>();
}

<a name="x1996"></a>TQSize FontRowTable::<a href="qwidget.html#sizeHint">sizeHint</a>() const
{
    return 24*cellSize()+TQSize(2,2)*(<a href="qframe.html#margin">margin</a>()+frameWidth());
}

TQSize <a name="f532"></a>FontRowTable::cellSize() const
{
    <a href="qfontmetrics.html">TQFontMetrics</a> fm = <a href="qwidget.html#fontMetrics">fontMetrics</a>();
<a name="x1990"></a><a name="x1989"></a>    return TQSize( fm.<a href="qfontmetrics.html#maxWidth">maxWidth</a>(), fm.<a href="qfontmetrics.html#lineSpacing">lineSpacing</a>()+1 );
}

<a name="x1995"></a>void FontRowTable::<a href="qframe.html#paintEvent">paintEvent</a>( <a href="qpaintevent.html">TQPaintEvent</a>* e )
{
    TQFrame::<a href="qframe.html#paintEvent">paintEvent</a>(e);
    <a href="qpainter.html">TQPainter</a> p(this);
<a name="x2002"></a><a name="x1999"></a>    p.<a href="qpainter.html#setClipRegion">setClipRegion</a>(e-&gt;<a href="qpaintevent.html#region">region</a>());
<a name="x2001"></a>    <a href="qrect.html">TQRect</a> r = e-&gt;<a href="qpaintevent.html#rect">rect</a>();
    <a href="qfontmetrics.html">TQFontMetrics</a> fm = <a href="qwidget.html#fontMetrics">fontMetrics</a>();
<a name="x1991"></a>    int ml = <a href="qframe.html#frameWidth">frameWidth</a>()+margin() + 1 + TQMAX(0,-fm.<a href="qfontmetrics.html#minLeftBearing">minLeftBearing</a>());
    int mt = <a href="qframe.html#frameWidth">frameWidth</a>()+margin();
    <a href="qsize.html">TQSize</a> cell((<a href="qwidget.html#width">width</a>()-15-ml)/16,(<a href="qwidget.html#height">height</a>()-15-mt)/16);

<a name="x2008"></a><a name="x2007"></a>    if ( !cell.<a href="qsize.html#width">width</a>() || !cell.<a href="qsize.html#height">height</a>() )
        return;

    int mini = r.<a href="qrect.html#left">left</a>() / cell.<a href="qsize.html#width">width</a>();
    int maxi = (r.<a href="qrect.html#right">right</a>()+cell.<a href="qsize.html#width">width</a>()-1) / cell.<a href="qsize.html#width">width</a>();
    int minj = r.<a href="qrect.html#top">top</a>() / cell.<a href="qsize.html#height">height</a>();
<a name="x2003"></a>    int maxj = (r.<a href="qrect.html#bottom">bottom</a>()+cell.<a href="qsize.html#height">height</a>()-1) / cell.<a href="qsize.html#height">height</a>();

<a name="x1986"></a>    int h = fm.<a href="qfontmetrics.html#height">height</a>();

    <a href="qcolor.html">TQColor</a> body(255,255,192);
    <a href="qcolor.html">TQColor</a> negative(255,192,192);
    <a href="qcolor.html">TQColor</a> positive(192,192,255);
    <a href="qcolor.html">TQColor</a> rnegative(255,128,128);
    <a href="qcolor.html">TQColor</a> rpositive(128,128,255);

    for (int j = minj; j&lt;=maxj; j++) {
        for (int i = mini; i&lt;=maxi; i++) {
            if ( i &lt; 16 &amp;&amp; j &lt; 16 ) {
                int x = i*cell.<a href="qsize.html#width">width</a>();
                int y = j*cell.<a href="qsize.html#height">height</a>();

                <a href="qchar.html">TQChar</a> ch = TQChar(j*16+i,row);

<a name="x1987"></a>                if ( fm.<a href="qfontmetrics.html#inFont">inFont</a>(ch) ) {
<a name="x1994"></a>                    int w = fm.<a href="qfontmetrics.html#width">width</a>(ch);
<a name="x1988"></a>                    int l = fm.<a href="qfontmetrics.html#leftBearing">leftBearing</a>(ch);
<a name="x1993"></a>                    int r = fm.<a href="qfontmetrics.html#rightBearing">rightBearing</a>(ch);

                    x += ml;
                    y += mt+h;

<a name="x1998"></a>                    p.<a href="qpainter.html#fillRect">fillRect</a>(x,y,w,-h,body);
                    if ( w ) {
                        if ( l ) {
                            p.<a href="qpainter.html#fillRect">fillRect</a>(x+(l&gt;0?0:l), y-h/2, abs(l),-h/2,
                                       l &lt; 0 ? negative : positive);
                        }
                        if ( r ) {
                            p.<a href="qpainter.html#fillRect">fillRect</a>(x+w-(r&gt;0?r:0),y+2, abs(r),-h/2,
                                       r &lt; 0 ? rnegative : rpositive);
                        }
                    }
                    <a href="qstring.html">TQString</a> s;
                    s += ch;
                    p.<a href="qpainter.html#setPen">setPen</a>(TQPen(TQt::black));
                    p.<a href="qpainter.html#drawText">drawText</a>(x,y,s);
                }
            }
        }
    }
}

void <a name="f533"></a>FontRowTable::setRow(int r)
{
    row = r;

    <a href="qfontmetrics.html">TQFontMetrics</a> fm = <a href="qwidget.html#fontMetrics">fontMetrics</a>();
    <a href="qfontinfo.html">TQFontInfo</a> fi = <a href="qwidget.html#fontInfo">fontInfo</a>();
    <a href="qstring.html">TQString</a> str = TQString("%1 %2pt%3%4 mLB=%5 mRB=%6 mW=%7")
<a name="x1983"></a>                    .arg(fi.<a href="qfontinfo.html#family">family</a>())
<a name="x1985"></a>                    .arg(fi.<a href="qfontinfo.html#pointSize">pointSize</a>())
<a name="x1982"></a>                    .arg(fi.<a href="qfontinfo.html#bold">bold</a>() ? " bold" : "")
<a name="x1984"></a>                    .arg(fi.<a href="qfontinfo.html#italic">italic</a>() ? " italic" : "")
                    .arg(fm.<a href="qfontmetrics.html#minLeftBearing">minLeftBearing</a>())
<a name="x1992"></a>                    .arg(fm.<a href="qfontmetrics.html#minRightBearing">minRightBearing</a>())
                    .arg(fm.<a href="qfontmetrics.html#maxWidth">maxWidth</a>());

    emit fontInformation(str);
    <a href="qwidget.html#update">update</a>();
}

void <a name="f534"></a>FontRowTable::chooseFont()
{
    bool ok;
    <a href="qfont.html">TQFont</a> oldfont = tablefont;
<a name="x1981"></a>    tablefont = TQFontDialog::<a href="qfontdialog.html#getFont">getFont</a>(&amp;ok, oldfont, this);

    if (ok)
        <a href="qwidget.html#setFont">setFont</a>(tablefont);
    else
        tablefont = oldfont;
}

<a name="f530"></a>FontDisplayer::FontDisplayer( <a href="qwidget.html">TQWidget</a>* parent, const char* name ) :
    <a href="qmainwindow.html">TQMainWindow</a>(parent,name)
{
    FontRowTable* table = new FontRowTable(this);
    <a href="qtoolbar.html">TQToolBar</a>* controls = new <a href="qtoolbar.html">TQToolBar</a>(this);
    (void) new <a href="qlabel.html">TQLabel</a>(<a href="qobject.html#tr">tr</a>("Row:"), controls);
    <a href="qspinbox.html">TQSpinBox</a> *row = new <a href="qspinbox.html">TQSpinBox</a>(0,255,1,controls);
<a name="x2010"></a>    controls-&gt;<a href="qtoolbar.html#addSeparator">addSeparator</a>();
    <a href="qpushbutton.html">TQPushButton</a> *fontbutton = new <a href="qpushbutton.html">TQPushButton</a>(<a href="qobject.html#tr">tr</a>("Font..."), controls);

<a name="x2009"></a>    <a href="qobject.html#connect">connect</a>(row,SIGNAL(<a href="qspinbox.html#valueChanged">valueChanged</a>(int)),table,SLOT(setRow(int)));
    <a href="qobject.html#connect">connect</a>(fontbutton, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), table, SLOT(chooseFont()));
    <a href="qobject.html#connect">connect</a>(table,SIGNAL(fontInformation(const <a href="qstring.html">TQString</a>&amp;)),
            <a href="qmainwindow.html#statusBar">statusBar</a>(),SLOT(message(const <a href="qstring.html">TQString</a>&amp;)));
    table-&gt;setRow(0);
    <a href="qmainwindow.html#setCentralWidget">setCentralWidget</a>(table);
}
</pre>

<p> <hr>
<p> Main:
<p> <pre>/****************************************************************************
** $Id: qt/qfd.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 "fontdisplayer.h"

#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a href="qslider-h.html">qslider.h</a>&gt;
#include &lt;<a href="qpainter-h.html">qpainter.h</a>&gt;
#include &lt;<a href="qstatusbar-h.html">qstatusbar.h</a>&gt;



int main(int argc, char** argv)
{
    <a href="qapplication.html">TQApplication</a> app(argc,argv);

    FontDisplayer m;
<a name="x2013"></a>    <a href="qsize.html">TQSize</a> sh = m.<a href="qmainwindow.html#centralWidget">centralWidget</a>()-&gt;sizeHint();
<a name="x2017"></a>    m.<a href="qwidget.html#resize">resize</a>(sh.<a href="qsize.html#width">width</a>(),
<a name="x2016"></a><a name="x2015"></a>             sh.<a href="qsize.html#height">height</a>()+3*m.<a href="qmainwindow.html#statusBar">statusBar</a>()-&gt;height());
    app.<a href="qapplication.html#setMainWidget">setMainWidget</a>(&amp;m);
    m.<a href="qwidget.html#setCaption">setCaption</a>("TQt Example - TQFD");
<a name="x2014"></a>    m.<a href="qwidget.html#show">show</a>();

    return app.<a href="qapplication.html#exec">exec</a>();
}
</pre>

<p>See also <a href="examples.html">Examples</a>.

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