<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /tmp/qt-3.0-reggie-28534/qt-x11-free-3.0.2/examples/xform/xform.doc:4 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Transformed Graphics Demo</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>Transformed Graphics Demo</h1>
<p>
This example lets the user rotate, shear and scale text and graphics
arbitrarily.
<p> <hr>
<p> Implementation:
<p> <pre>/****************************************************************************
** $Id: qt/xform.cpp 3.0.2 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 <<a href="qapplication-h.html">qapplication.h</a>>
#include <<a href="qdialog-h.html">qdialog.h</a>>
#include <<a href="qlabel-h.html">qlabel.h</a>>
#include <<a href="qlineedit-h.html">qlineedit.h</a>>
#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>
#include <<a href="qcheckbox-h.html">qcheckbox.h</a>>
#include <<a href="qradiobutton-h.html">qradiobutton.h</a>>
#include <<a href="qbuttongroup-h.html">qbuttongroup.h</a>>
#include <<a href="qlcdnumber-h.html">qlcdnumber.h</a>>
#include <<a href="qslider-h.html">qslider.h</a>>
#include <<a href="qmenubar-h.html">qmenubar.h</a>>
#include <<a href="qfontdialog-h.html">qfontdialog.h</a>>
#include <<a href="qlayout-h.html">qlayout.h</a>>
#include <<a href="qvbox-h.html">qvbox.h</a>>
#include <<a href="qwidgetstack-h.html">qwidgetstack.h</a>>
#include <<a href="qpainter-h.html">qpainter.h</a>>
#include <<a href="qpixmap-h.html">qpixmap.h</a>>
#include <<a href="qpicture-h.html">qpicture.h</a>>
#include <stdlib.h>
class ModeNames {
public:
enum Mode { Text, Image, Picture };
};
class XFormControl : public <a href="qvbox.html">QVBox</a>, public ModeNames
{
<a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>
public:
XFormControl( const <a href="qfont.html">QFont</a> &initialFont, QWidget *parent=0, const char *name=0 );
~XFormControl() {}
<a href="qwmatrix.html">QWMatrix</a> matrix();
signals:
void newMatrix( <a href="qwmatrix.html">QWMatrix</a> );
void newText( const <a href="qstring.html">QString</a>& );
void newFont( const <a href="qfont.html">QFont</a> & );
void newMode( int );
private slots:
void newMtx();
void newTxt(const <a href="qstring.html">QString</a>&);
void selectFont();
void fontSelected( const <a href="qfont.html">QFont</a> & );
void changeMode(int);
void timerEvent(QTimerEvent*);
private:
Mode mode;
<a href="qslider.html">QSlider</a> *rotS; // Rotation angle scroll bar
<a href="qslider.html">QSlider</a> *shearS; // Shear value scroll bar
<a href="qslider.html">QSlider</a> *magS; // Magnification value scroll bar
<a href="qlcdnumber.html">QLCDNumber</a> *rotLCD; // Rotation angle LCD display
<a href="qlcdnumber.html">QLCDNumber</a> *shearLCD; // Shear value LCD display
<a href="qlcdnumber.html">QLCDNumber</a> *magLCD; // Magnification value LCD display
<a href="qcheckbox.html">QCheckBox</a> *mirror; // Checkbox for mirror image on/of
<a href="qwidgetstack.html">QWidgetStack</a>* optionals;
<a href="qlineedit.html">QLineEdit</a> *textEd; // Inp[ut field for xForm text
<a href="qpushbutton.html">QPushButton</a> *fpb; // Select font push button
<a href="qradiobutton.html">QRadioButton</a> *rb_txt; // Radio button for text
<a href="qradiobutton.html">QRadioButton</a> *rb_img; // Radio button for image
<a href="qradiobutton.html">QRadioButton</a> *rb_pic; // Radio button for picture
<a href="qfont.html">QFont</a> currentFont;
};
/*
ShowXForm displays a text or a pixmap (QPixmap) using a coordinate
transformation matrix (QWMatrix)
*/
class ShowXForm : public <a href="qwidget.html">QWidget</a>, public ModeNames
{
Q_OBJECT
public:
ShowXForm( const <a href="qfont.html">QFont</a> &f, QWidget *parent=0, const char *name=0 );
~ShowXForm() {}
void showIt(); // (Re)displays text or pixmap
Mode mode() const { return m; }
public slots:
void setText( const <a href="qstring.html">QString</a>& );
void setMatrix( <a href="qwmatrix.html">QWMatrix</a> );
void setFont( const <a href="qfont.html">QFont</a> &f );
void setPixmap( <a href="qpixmap.html">QPixmap</a> );
void setPicture( const <a href="qpicture.html">QPicture</a>& );
void setMode( int );
private:
<a href="qsizepolicy.html">QSizePolicy</a> sizePolicy() const;
<a href="qsize.html">QSize</a> sizeHint() const;
void paintEvent( <a href="qpaintevent.html">QPaintEvent</a> * );
void resizeEvent( <a href="qresizeevent.html">QResizeEvent</a> * );
<a href="qwmatrix.html">QWMatrix</a> mtx; // coordinate transform matrix
<a href="qstring.html">QString</a> text; // text to be displayed
<a href="qpixmap.html">QPixmap</a> pix; // pixmap to be displayed
<a href="qpicture.html">QPicture</a> picture; // text to be displayed
<a href="qrect.html">QRect</a> eraseRect; // covers last displayed text/pixmap
Mode m;
};
<a name="f162"></a>XFormControl::XFormControl( const <a href="qfont.html">QFont</a> &initialFont,
<a href="qwidget.html">QWidget</a> *parent, const char *name )
: <a href="qvbox.html">QVBox</a>( parent, name )
{
<a href="qhbox.html#setSpacing">setSpacing</a>(6);
<a href="qframe.html#setMargin">setMargin</a>(6);
currentFont = initialFont;
mode = Image;
rotLCD = new <a href="qlcdnumber.html">QLCDNumber</a>( 4, this, "rotateLCD" );
rotS = new <a href="qslider.html">QSlider</a>( QSlider::Horizontal, this,
"rotateSlider" );
shearLCD = new <a href="qlcdnumber.html">QLCDNumber</a>( 5,this, "shearLCD" );
shearS = new <a href="qslider.html">QSlider</a>( QSlider::Horizontal, this,
"shearSlider" );
mirror = new <a href="qcheckbox.html">QCheckBox</a>( this, "mirrorCheckBox" );
rb_txt = new <a href="qradiobutton.html">QRadioButton</a>( this, "text" );
rb_img = new <a href="qradiobutton.html">QRadioButton</a>( this, "image" );
rb_pic = new <a href="qradiobutton.html">QRadioButton</a>( this, "picture" );
optionals = new <a href="qwidgetstack.html">QWidgetStack</a>(this);
<a href="qvbox.html">QVBox</a>* optionals_text = new <a href="qvbox.html">QVBox</a>(optionals);
<a name="x82"></a> optionals_text-><a href="qhbox.html#setSpacing">setSpacing</a>(6);
<a href="qvbox.html">QVBox</a>* optionals_other = new <a href="qvbox.html">QVBox</a>(optionals);
optionals_other-><a href="qhbox.html#setSpacing">setSpacing</a>(6);
<a name="x132"></a> optionals-><a href="qwidgetstack.html#addWidget">addWidget</a>(optionals_text,0);
optionals-><a href="qwidgetstack.html#addWidget">addWidget</a>(optionals_other,1);
fpb = new <a href="qpushbutton.html">QPushButton</a>( optionals_text, "text" );
textEd = new <a href="qlineedit.html">QLineEdit</a>( optionals_text, "text" );
<a name="x127"></a> textEd-><a href="qwidget.html#setFocus">setFocus</a>();
<a name="x83"></a> rotLCD-><a href="qlcdnumber.html#display">display</a>( " 0'" );
<a name="x106"></a> rotS-><a href="qrangecontrol.html#setRange">setRange</a>( -180, 180 );
<a name="x117"></a> rotS-><a href="qslider.html#setValue">setValue</a>( 0 );
<a name="x119"></a> <a href="qobject.html#connect">connect</a>( rotS, SIGNAL(<a href="qslider.html#valueChanged">valueChanged</a>(int)), SLOT(newMtx()) );
shearLCD-><a href="qlcdnumber.html#display">display</a>( "0.00" );
shearS-><a href="qrangecontrol.html#setRange">setRange</a>( -25, 25 );
shearS-><a href="qslider.html#setValue">setValue</a>( 0 );
<a href="qobject.html#connect">connect</a>( shearS, SIGNAL(<a href="qslider.html#valueChanged">valueChanged</a>(int)), SLOT(newMtx()) );
<a name="x74"></a> mirror-><a href="qbutton.html#setText">setText</a>( <a href="qobject.html#tr">tr</a>("Mirror") );
<a href="qobject.html#connect">connect</a>( mirror, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), SLOT(newMtx()) );
<a href="qbuttongroup.html">QButtonGroup</a> *bg = new <a href="qbuttongroup.html">QButtonGroup</a>(this);
<a name="x123"></a> bg-><a href="qwidget.html#hide">hide</a>();
<a name="x76"></a> bg-><a href="qbuttongroup.html#insert">insert</a>(rb_txt,0);
bg-><a href="qbuttongroup.html#insert">insert</a>(rb_img,1);
bg-><a href="qbuttongroup.html#insert">insert</a>(rb_pic,2);
rb_txt-><a href="qbutton.html#setText">setText</a>( <a href="qobject.html#tr">tr</a>("Text") );
rb_img-><a href="qbutton.html#setText">setText</a>( <a href="qobject.html#tr">tr</a>("Image") );
<a name="x105"></a> rb_img-><a href="qradiobutton.html#setChecked">setChecked</a>(TRUE);
rb_pic-><a href="qbutton.html#setText">setText</a>( <a href="qobject.html#tr">tr</a>("Picture") );
<a name="x75"></a> <a href="qobject.html#connect">connect</a>( bg, SIGNAL(<a href="qbuttongroup.html#clicked">clicked</a>(int)), SLOT(changeMode(int)) );
fpb-><a href="qbutton.html#setText">setText</a>( <a href="qobject.html#tr">tr</a>("Select font...") );
<a href="qobject.html#connect">connect</a>( fpb, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), SLOT(selectFont()) );
<a name="x84"></a> textEd-><a href="qlineedit.html#setText">setText</a>( "Troll" );
<a name="x85"></a> <a href="qobject.html#connect">connect</a>( textEd, SIGNAL(<a href="qlineedit.html#textChanged">textChanged</a>(const <a href="qstring.html">QString</a>&)),
SLOT(newTxt(const <a href="qstring.html">QString</a>&)) );
magLCD = new <a href="qlcdnumber.html">QLCDNumber</a>( 4,optionals_other, "magLCD" );
magLCD-><a href="qlcdnumber.html#display">display</a>( "100" );
magS = new <a href="qslider.html">QSlider</a>( QSlider::Horizontal, optionals_other,
"magnifySlider" );
magS-><a href="qrangecontrol.html#setRange">setRange</a>( 0, 800 );
<a href="qobject.html#connect">connect</a>( magS, SIGNAL(<a href="qslider.html#valueChanged">valueChanged</a>(int)), SLOT(newMtx()) );
magS-><a href="qslider.html#setValue">setValue</a>( 0 );
<a href="qobject.html#connect">connect</a>( magS, SIGNAL(<a href="qslider.html#valueChanged">valueChanged</a>(int)), magLCD, SLOT(<a href="qlcdnumber.html#display">display</a>(int)));
<a name="x122"></a> optionals_text-><a href="qwidget.html#adjustSize">adjustSize</a>();
optionals_other-><a href="qwidget.html#adjustSize">adjustSize</a>();
changeMode(Image);
<a href="qobject.html#startTimer">startTimer</a>(20); // start an initial animation
}
<a name="x86"></a>void XFormControl::<a href="qobject.html#timerEvent">timerEvent</a>(QTimerEvent*)
{
<a name="x118"></a> int v = magS-><a href="qslider.html#value">value</a>();
v = (v+2)+v/10;
if ( v >= 200 ) {
v = 200;
<a href="qobject.html#killTimers">killTimers</a>();
}
magS-><a href="qslider.html#setValue">setValue</a>(v);
}
/*
Called whenever the user has changed one of the matrix parameters
(i.e. rotate, shear or magnification)
*/
void <a name="f163"></a>XFormControl::newMtx()
{
emit newMatrix( matrix() );
}
void <a name="f164"></a>XFormControl::newTxt(const <a href="qstring.html">QString</a>& s)
{
emit newText(s);
changeMode(Text);
}
/*
Calculates the matrix appropriate for the current controls,
and updates the displays.
*/
QWMatrix <a name="f165"></a>XFormControl::matrix()
{
<a href="qwmatrix.html">QWMatrix</a> m;
if (mode != Text) {
double magVal = 1.0*magS-><a href="qslider.html#value">value</a>()/100;
<a name="x136"></a> m.<a href="qwmatrix.html#scale">scale</a>( magVal, magVal );
}
double shearVal = 1.0*shearS-><a href="qslider.html#value">value</a>()/25;
<a name="x137"></a> m.<a href="qwmatrix.html#shear">shear</a>( shearVal, shearVal );
<a name="x135"></a> m.<a href="qwmatrix.html#rotate">rotate</a>( rotS-><a href="qslider.html#value">value</a>() );
<a name="x77"></a> if ( mirror-><a href="qcheckbox.html#isChecked">isChecked</a>() ) {
m.<a href="qwmatrix.html#scale">scale</a>( 1, -1 );
m.<a href="qwmatrix.html#rotate">rotate</a>( 180 );
}
<a href="qstring.html">QString</a> tmp;
<a name="x121"></a> tmp.<a href="qstring.html#sprintf">sprintf</a>( "%1.2f", shearVal );
if ( shearVal >= 0 )
<a name="x120"></a> tmp.<a href="qstring.html#insert">insert</a>( 0, " " );
shearLCD-><a href="qlcdnumber.html#display">display</a>( tmp );
int rot = rotS-><a href="qslider.html#value">value</a>();
if ( rot < 0 )
rot = rot + 360;
tmp.<a href="qstring.html#sprintf">sprintf</a>( "%3i'", rot );
rotLCD-><a href="qlcdnumber.html#display">display</a>( tmp );
return m;
}
void <a name="f166"></a>XFormControl::selectFont()
{
bool ok;
<a name="x78"></a> <a href="qfont.html">QFont</a> f = QFontDialog::<a href="qfontdialog.html#getFont">getFont</a>( &ok, currentFont );
if ( ok ) {
currentFont = f;
fontSelected( f );
}
}
void <a name="f167"></a>XFormControl::fontSelected( const <a href="qfont.html">QFont</a> &font )
{
emit newFont( font );
changeMode(Text);
}
/*
Sets the mode - Text, Image, or Picture.
*/
void <a name="f168"></a>XFormControl::changeMode(int m)
{
mode = (Mode)m;
emit newMode( m );
newMtx();
if ( mode == Text ) {
<a name="x133"></a> optionals-><a href="qwidgetstack.html#raiseWidget">raiseWidget</a>(0);
rb_txt-><a href="qradiobutton.html#setChecked">setChecked</a>(TRUE);
} else {
optionals-><a href="qwidgetstack.html#raiseWidget">raiseWidget</a>(1);
if ( mode == Image )
rb_img-><a href="qradiobutton.html#setChecked">setChecked</a>(TRUE);
else
rb_pic-><a href="qradiobutton.html#setChecked">setChecked</a>(TRUE);
}
<a name="x71"></a> qApp-><a href="qapplication.html#flushX">flushX</a>();
}
<a name="f153"></a>ShowXForm::ShowXForm( const <a href="qfont.html">QFont</a> &initialFont,
<a href="qwidget.html">QWidget</a> *parent, const char *name )
: <a href="qwidget.html">QWidget</a>( parent, name, WResizeNoErase )
{
<a href="qwidget.html#setFont">setFont</a>( initialFont );
<a href="qwidget.html#setBackgroundColor">setBackgroundColor</a>( white );
m = Text;
eraseRect = QRect( 0, 0, 0, 0 );
}
<a name="x131"></a>QSizePolicy ShowXForm::<a href="qwidget.html#sizePolicy">sizePolicy</a>() const
{
return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
}
QSize ShowXForm::<a href="qwidget.html#sizeHint">sizeHint</a>() const
{
return QSize(400,400);
}
void ShowXForm::<a href="qwidget.html#paintEvent">paintEvent</a>( <a href="qpaintevent.html">QPaintEvent</a> * )
{
showIt();
}
void ShowXForm::<a href="qwidget.html#resizeEvent">resizeEvent</a>( <a href="qresizeevent.html">QResizeEvent</a> * )
{
eraseRect = QRect( <a href="qwidget.html#width">width</a>()/2, height()/2, 0, 0 );
<a href="qwidget.html#repaint">repaint</a>(<a href="qwidget.html#rect">rect</a>());
}
void <a name="f154"></a>ShowXForm::setText( const <a href="qstring.html">QString</a>& s )
{
text = s;
showIt();
}
void <a name="f155"></a>ShowXForm::setMatrix( <a href="qwmatrix.html">QWMatrix</a> w )
{
mtx = w;
showIt();
}
<a name="x128"></a>void ShowXForm::<a href="qwidget.html#setFont">setFont</a>( const <a href="qfont.html">QFont</a> &f )
{
m = Text;
QWidget::<a href="qwidget.html#setFont">setFont</a>( f );
}
void <a name="f156"></a>ShowXForm::setPixmap( <a href="qpixmap.html">QPixmap</a> pm )
{
pix = pm;
m = Image;
showIt();
}
void <a name="f157"></a>ShowXForm::setPicture( const <a href="qpicture.html">QPicture</a>& p )
{
picture = p;
m = Picture;
showIt();
}
void <a name="f158"></a>ShowXForm::setMode( int mode )
{
m = (Mode)mode;
}
void <a name="f159"></a>ShowXForm::showIt()
{
<a href="qpainter.html">QPainter</a> p;
<a href="qrect.html">QRect</a> r; // rectangle covering new text/pixmap in virtual coordinates
<a href="qwmatrix.html">QWMatrix</a> um; // copy user specified transform
int textYPos = 0; // distance from boundingRect y pos to baseline
int textXPos = 0; // distance from boundingRect x pos to text start
<a href="qrect.html">QRect</a> br;
<a href="qfontmetrics.html">QFontMetrics</a> fm( <a href="qwidget.html#fontMetrics">fontMetrics</a>() ); // get widget font metrics
switch ( mode() ) {
case Text:
<a name="x79"></a> br = fm.<a href="qfontmetrics.html#boundingRect">boundingRect</a>( text ); // rectangle covering text
r = br;
textYPos = -r.<a href="qrect.html#y">y</a>();
textXPos = -r.<a href="qrect.html#x">x</a>();
<a name="x114"></a><a name="x110"></a><a name="x107"></a> br.<a href="qrect.html#moveTopLeft">moveTopLeft</a>( QPoint( -br.<a href="qrect.html#width">width</a>()/2, -br.<a href="qrect.html#height">height</a>()/2 ) );
break;
case Image:
<a name="x102"></a> r = pix.<a href="qpixmap.html#rect">rect</a>();
break;
case Picture:
// ### need QPicture::boundingRect()
r = QRect(0,0,1000,1000);
break;
}
r.<a href="qrect.html#moveTopLeft">moveTopLeft</a>( QPoint(-r.<a href="qrect.html#width">width</a>()/2, -r.<a href="qrect.html#height">height</a>()/2) );
// compute union of new and old rect
// the resulting rectangle will cover what is already displayed
// and have room for the new text/pixmap
<a name="x134"></a><a name="x113"></a> eraseRect = eraseRect.<a href="qrect.html#unite">unite</a>( mtx.<a href="qwmatrix.html#map">map</a>(r) );
<a name="x109"></a> eraseRect.<a href="qrect.html#moveBy">moveBy</a>( -1, -1 ); // add border for matrix round off
<a name="x111"></a> eraseRect.<a href="qrect.html#setSize">setSize</a>( QSize( eraseRect.<a href="qrect.html#width">width</a>() + 2,eraseRect.<a href="qrect.html#height">height</a>() + 2 ) );
int pw = QMIN(eraseRect.<a href="qrect.html#width">width</a>(),width());
int ph = QMIN(eraseRect.<a href="qrect.html#height">height</a>(),height());
<a href="qpixmap.html">QPixmap</a> pm( pw, ph ); // off-screen drawing pixmap
<a name="x99"></a> pm.<a href="qpixmap.html#fill">fill</a>( <a href="qwidget.html#backgroundColor">backgroundColor</a>() );
<a name="x87"></a> p.<a href="qpainter.html#begin">begin</a>( &pm );
<a name="x138"></a> um.<a href="qwmatrix.html#translate">translate</a>( pw/2, ph/2 ); // 0,0 is center
um = mtx * um;
<a name="x96"></a> p.<a href="qpainter.html#setWorldMatrix">setWorldMatrix</a>( um );
switch ( mode() ) {
case Text:
<a name="x94"></a> p.<a href="qpainter.html#setFont">setFont</a>( <a href="qwidget.html#font">font</a>() ); // use widget font
<a name="x112"></a><a name="x108"></a> p.<a href="qpainter.html#drawText">drawText</a>( r.<a href="qrect.html#left">left</a>() + textXPos, r.<a href="qrect.html#top">top</a>() + textYPos, text );
#if 0
p.<a href="qpainter.html#setPen">setPen</a>( red );
p.<a href="qpainter.html#drawRect">drawRect</a>( br );
#endif
break;
case Image:
<a name="x89"></a><a name="x103"></a><a name="x100"></a> p.<a href="qpainter.html#drawPixmap">drawPixmap</a>( -pix.<a href="qpixmap.html#width">width</a>()/2, -pix.<a href="qpixmap.html#height">height</a>()/2, pix );
<a name="x104"></a> //QPixmap rotated = pix.<a href="qpixmap.html#xForm">xForm</a>(mtx);
//bitBlt( &pm, pm.<a href="qpixmap.html#width">width</a>()/2 - rotated.width()/2,
//pm.<a href="qpixmap.html#height">height</a>()/2 - rotated.height()/2, &rotated );
break;
case Picture:
// ### need QPicture::boundingRect()
<a name="x93"></a> p.<a href="qpainter.html#scale">scale</a>(0.25,0.25);
<a name="x97"></a> p.<a href="qpainter.html#translate">translate</a>(-230,-180);
<a name="x88"></a> p.<a href="qpainter.html#drawPicture">drawPicture</a>( picture );
}
<a name="x92"></a> p.<a href="qpainter.html#end">end</a>();
int xpos = <a href="qwidget.html#width">width</a>()/2 - pw/2;
int ypos = <a href="qwidget.html#height">height</a>()/2 - ph/2;
<a href="qpaintdevice.html#bitBlt-2">bitBlt</a>( this, xpos, ypos, // copy pixmap to widget
&pm, 0, 0, -1, -1 );
eraseRect = mtx.<a href="qwmatrix.html#map">map</a>( r );
}
/*
Grand unifying widget, putting ShowXForm and XFormControl
together.
*/
class XFormCenter : public <a href="qhbox.html">QHBox</a>, public ModeNames
{
Q_OBJECT
public:
XFormCenter( <a href="qwidget.html">QWidget</a> *parent=0, const char *name=0 );
public slots:
void setFont( const <a href="qfont.html">QFont</a> &f ) { sx-><a href="qwidget.html#setFont">setFont</a>( f ); }
void newMode( int );
private:
ShowXForm *sx;
XFormControl *xc;
};
void <a name="f160"></a>XFormCenter::newMode( int m )
{
static bool first_i = TRUE;
static bool first_p = TRUE;
if ( sx->mode() == m )
return;
if ( m == Image && first_i ) {
first_i = FALSE;
<a href="qpixmap.html">QPixmap</a> pm;
<a name="x101"></a> if ( pm.<a href="qpixmap.html#load">load</a>( "image.any" ) )
sx->setPixmap( pm );
return;
}
if ( m == Picture && first_p ) {
first_p = FALSE;
<a href="qpicture.html">QPicture</a> p;
<a name="x98"></a> if (p.<a href="qpicture.html#load">load</a>( "picture.any" ))
sx->setPicture( p );
return;
}
sx->setMode(m);
}
<a name="f161"></a>XFormCenter::XFormCenter( <a href="qwidget.html">QWidget</a> *parent, const char *name )
: <a href="qhbox.html">QHBox</a>( parent, name )
{
<a href="qfont.html">QFont</a> f( "Charter", 36, QFont::Bold );
xc = new XFormControl( f, this );
sx = new ShowXForm( f, this );
<a href="qhbox.html#setStretchFactor">setStretchFactor</a>(sx,1);
xc-><a href="qframe.html#setFrameStyle">setFrameStyle</a>( QFrame::Panel | QFrame::Raised );
<a name="x81"></a> xc-><a href="qframe.html#setLineWidth">setLineWidth</a>( 2 );
<a href="qobject.html#connect">connect</a>( xc, SIGNAL(newText(const <a href="qstring.html">QString</a>&)), sx,
SLOT(setText(const <a href="qstring.html">QString</a>&)) );
<a href="qobject.html#connect">connect</a>( xc, SIGNAL(newMatrix(QWMatrix)),
sx, SLOT(setMatrix(QWMatrix)) );
<a href="qobject.html#connect">connect</a>( xc, SIGNAL(newFont(const <a href="qfont.html">QFont</a>&)), sx,
SLOT(<a href="qwidget.html#setFont">setFont</a>(const <a href="qfont.html">QFont</a>&)) );
<a href="qobject.html#connect">connect</a>( xc, SIGNAL(newMode(int)), SLOT(newMode(int)) );
sx->setText( "Troll" );
newMode( Image );
sx->setMatrix(xc->matrix());
}
int main( int argc, char **argv )
{
<a href="qapplication.html">QApplication</a> a( argc, argv );
XFormCenter *xfc = new XFormCenter;
a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( xfc );
xfc-><a href="qwidget.html#setCaption">setCaption</a>("Qt Example - XForm");
xfc-><a href="qwidget.html#show">show</a>();
return a.<a href="qapplication.html#exec">exec</a>();
}
#include "xform.moc" // include metadata generated by the <a href="moc.html#moc">moc</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 © 2001
<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 3.0.2</div>
</table></div></address></body>
</html>
distrib
>
Mandriva
>
8.2
>
i586
>
media
>
contrib
>
by-pkgid
>
112b0974ad288f6cd55bf971ee6026a9
>
files
>
2327
