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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>
Qt Toolkit - xform/xform.cpp example file
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<h1 align=center>Transformed Graphics Demo</h1><br clear="all">
This example lets the user rotate, shear and scale text and graphics
arbitrarily.
<hr>
Implementation:
<pre>/****************************************************************************
** $Id: qt/examples/xform/xform.cpp 2.3.1 edited 2001-01-26 $
**
** 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 name="qapplication.h"></a><a href="qapplication-h.html">qapplication.h</a>>
#include <<a name="qdialog.h"></a><a href="qdialog-h.html">qdialog.h</a>>
#include <<a name="qlabel.h"></a><a href="qlabel-h.html">qlabel.h</a>>
#include <<a name="qlineedit.h"></a><a href="qlineedit-h.html">qlineedit.h</a>>
#include <<a name="qpushbutton.h"></a><a href="qpushbutton-h.html">qpushbutton.h</a>>
#include <<a name="qcheckbox.h"></a><a href="qcheckbox-h.html">qcheckbox.h</a>>
#include <<a name="qradiobutton.h"></a><a href="qradiobutton-h.html">qradiobutton.h</a>>
#include <<a name="qbuttongroup.h"></a><a href="qbuttongroup-h.html">qbuttongroup.h</a>>
#include <<a name="qlcdnumber.h"></a><a href="qlcdnumber-h.html">qlcdnumber.h</a>>
#include <<a name="qslider.h"></a><a href="qslider-h.html">qslider.h</a>>
#include <<a name="qmenubar.h"></a><a href="qmenubar-h.html">qmenubar.h</a>>
#include <<a name="qfontdialog.h"></a><a href="qfontdialog-h.html">qfontdialog.h</a>>
#include <<a name="qlayout.h"></a><a href="qlayout-h.html">qlayout.h</a>>
#include <<a name="qvbox.h"></a><a href="qvbox-h.html">qvbox.h</a>>
#include <<a name="qwidgetstack.h"></a><a href="qwidgetstack-h.html">qwidgetstack.h</a>>
#include <<a name="qpainter.h"></a><a href="qpainter-h.html">qpainter.h</a>>
#include <<a name="qpixmap.h"></a><a href="qpixmap-h.html">qpixmap.h</a>>
#include <<a name="qpicture.h"></a><a href="qpicture-h.html">qpicture.h</a>>
#include <stdlib.h>
class ModeNames {
public:
enum Mode { Text, Image, Picture };
};
class XFormControl : public QVBox, public ModeNames
{
Q_OBJECT
public:
XFormControl( const QFont &initialFont, QWidget *parent=0, const char *name=0 );
~XFormControl() {}
<a name="QWMatrix"></a><a href="qwmatrix.html">QWMatrix</a> matrix();
signals:
void newMatrix( <a href="qwmatrix.html">QWMatrix</a> );
void newText( const QString& );
void newFont( const QFont & );
void newMode( int );
private slots:
void newMtx();
void newTxt(const QString&);
void selectFont();
void fontSelected( const QFont & );
void changeMode(int);
void timerEvent(<a name="QTimerEvent"></a><a href="qtimerevent.html">QTimerEvent</a>*);
private:
Mode mode;
<a name="QSlider"></a><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 name="QLCDNumber"></a><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 name="QCheckBox"></a><a href="qcheckbox.html">QCheckBox</a> *mirror; // Checkbox for mirror image on/of
<a name="QWidgetStack"></a><a href="qwidgetstack.html">QWidgetStack</a>* optionals;
<a name="QLineEdit"></a><a href="qlineedit.html">QLineEdit</a> *textEd; // Inp[ut field for xForm text
<a name="QPushButton"></a><a href="qpushbutton.html">QPushButton</a> *fpb; // Select font push button
<a name="QRadioButton"></a><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 name="QFont"></a><a href="qfont.html">QFont</a> currentFont;
};
/*
ShowXForm displays a text or a pixmap (<a name="QPixmap"></a><a href="qpixmap.html">QPixmap</a>) using a coordinate
transformation matrix (<a href="qwmatrix.html">QWMatrix</a>)
*/
class ShowXForm : public QWidget, public ModeNames
{
Q_OBJECT
public:
ShowXForm( const QFont &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 QString& );
void setMatrix( <a href="qwmatrix.html">QWMatrix</a> );
void setFont( const QFont &f );
void setPixmap( <a href="qpixmap.html">QPixmap</a> );
void setPicture( const QPicture& );
void setMode( int );
private:
<a name="QSizePolicy"></a><a href="qsizepolicy.html">QSizePolicy</a> sizePolicy() const;
<a name="QSize"></a><a href="qsize.html">QSize</a> sizeHint() const;
void paintEvent( <a name="QPaintEvent"></a><a href="qpaintevent.html">QPaintEvent</a> * );
void resizeEvent( <a name="QResizeEvent"></a><a href="qresizeevent.html">QResizeEvent</a> * );
<a href="qwmatrix.html">QWMatrix</a> mtx; // coordinate transform matrix
<a name="QString"></a><a href="qstring.html">QString</a> text; // text to be displayed
<a href="qpixmap.html">QPixmap</a> pix; // pixmap to be displayed
<a name="QPicture"></a><a href="qpicture.html">QPicture</a> picture; // text to be displayed
<a name="QRect"></a><a href="qrect.html">QRect</a> eraseRect; // covers last displayed text/pixmap
Mode m;
};
XFormControl::XFormControl( const QFont &initialFont,
<a name="QWidget"></a><a href="qwidget.html">QWidget</a> *parent, const char *name )
: <a name="QVBox"></a><a href="qvbox.html">QVBox</a>( parent, name )
{
setSpacing(6);
setMargin(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);
optionals_text-><a name="setSpacing"></a><a href="qhbox.html#d8c6a6">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#d8c6a6">setSpacing</a>(6);
optionals-><a name="addWidget"></a><a href="qwidgetstack.html#30e890">addWidget</a>(optionals_text,0);
optionals-><a href="qwidgetstack.html#30e890">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" );
textEd-><a name="setFocus"></a><a href="qwidget.html#666b3c">setFocus</a>();
rotLCD-><a name="display"></a><a href="qlcdnumber.html#0eaac4">display</a>( " 0'" );
rotS-><a name="setRange"></a><a href="qrangecontrol.html#0337f8">setRange</a>( -180, 180 );
rotS-><a name="setValue"></a><a href="qslider.html#c5cce4">setValue</a>( 0 );
connect( rotS, SIGNAL(valueChanged(int)), SLOT(newMtx()) );
shearLCD-><a href="qlcdnumber.html#0eaac4">display</a>( "0.00" );
shearS-><a href="qrangecontrol.html#0337f8">setRange</a>( -25, 25 );
shearS-><a href="qslider.html#c5cce4">setValue</a>( 0 );
connect( shearS, SIGNAL(valueChanged(int)), SLOT(newMtx()) );
mirror-><a name="setText"></a><a href="qbutton.html#58c887">setText</a>( tr("Mirror") );
connect( mirror, SIGNAL(clicked()), SLOT(newMtx()) );
<a name="QButtonGroup"></a><a href="qbuttongroup.html">QButtonGroup</a> *bg = new <a href="qbuttongroup.html">QButtonGroup</a>(this);
bg-><a name="hide"></a><a href="qwidget.html#bc7c6a">hide</a>();
bg-><a name="insert"></a><a href="qbuttongroup.html#067bec">insert</a>(rb_txt,0);
bg-><a href="qbuttongroup.html#067bec">insert</a>(rb_img,1);
bg-><a href="qbuttongroup.html#067bec">insert</a>(rb_pic,2);
rb_txt-><a href="qbutton.html#58c887">setText</a>( tr("Text") );
rb_img-><a href="qbutton.html#58c887">setText</a>( tr("Image") );
rb_img-><a name="setChecked"></a><a href="qradiobutton.html#11e2e3">setChecked</a>(TRUE);
rb_pic-><a href="qbutton.html#58c887">setText</a>( tr("Picture") );
connect( bg, SIGNAL(clicked(int)), SLOT(changeMode(int)) );
fpb-><a href="qbutton.html#58c887">setText</a>( tr("Select font...") );
connect( fpb, SIGNAL(clicked()), SLOT(selectFont()) );
textEd-><a name="setText"></a><a href="qlineedit.html#b85aa3">setText</a>( "Troll" );
connect( textEd, SIGNAL(textChanged(const QString&)),
SLOT(newTxt(const QString&)) );
magLCD = new <a href="qlcdnumber.html">QLCDNumber</a>( 4,optionals_other, "magLCD" );
magLCD-><a href="qlcdnumber.html#0eaac4">display</a>( "100" );
magS = new <a href="qslider.html">QSlider</a>( QSlider::Horizontal, optionals_other,
"magnifySlider" );
magS-><a href="qrangecontrol.html#0337f8">setRange</a>( 0, 800 );
connect( magS, SIGNAL(valueChanged(int)), SLOT(newMtx()) );
magS-><a href="qslider.html#c5cce4">setValue</a>( 0 );
connect( magS, SIGNAL(valueChanged(int)), magLCD, SLOT(display(int)));
optionals_text-><a name="adjustSize"></a><a href="qwidget.html#ab3108">adjustSize</a>();
optionals_other-><a href="qwidget.html#ab3108">adjustSize</a>();
changeMode(Image);
startTimer(20); // start an initial animation
}
void <a name="149"></a>XFormControl::timerEvent(<a href="qtimerevent.html">QTimerEvent</a>*)
{
int v = magS-><a name="value"></a><a href="qslider.html#8f52b8">value</a>();
v = (v+2)+v/10;
if ( v >= 200 ) {
v = 200;
<a name="killTimers"></a><a href="qobject.html#66592d">killTimers</a>();
}
magS-><a href="qslider.html#c5cce4">setValue</a>(v);
}
/*
Called whenever the user has changed one of the matrix parameters
(i.e. rotate, shear or magnification)
*/
void <a name="150"></a>XFormControl::newMtx()
{
emit newMatrix( <a name="matrix"></a><a href="#152">matrix</a>() );
}
void <a name="151"></a>XFormControl::newTxt(const QString& s)
{
emit newText(s);
<a name="changeMode"></a><a href="#155">changeMode</a>(Text);
}
/*
Calculates the matrix appropriate for the current controls,
and updates the displays.
*/
<a href="qwmatrix.html">QWMatrix</a> <a name="152"></a>XFormControl::matrix()
{
<a href="qwmatrix.html">QWMatrix</a> m;
if (mode != Text) {
double magVal = 1.0*magS-><a href="qslider.html#8f52b8">value</a>()/100;
m.<a name="scale"></a><a href="qwmatrix.html#a5e455">scale</a>( magVal, magVal );
}
double shearVal = 1.0*shearS-><a href="qslider.html#8f52b8">value</a>()/25;
m.<a name="shear"></a><a href="qwmatrix.html#8eb34f">shear</a>( shearVal, shearVal );
m.<a name="rotate"></a><a href="qwmatrix.html#84df75">rotate</a>( rotS-><a href="qslider.html#8f52b8">value</a>() );
if ( mirror-><a name="isChecked"></a><a href="qcheckbox.html#30acb4">isChecked</a>() ) {
m.<a href="qwmatrix.html#a5e455">scale</a>( 1, -1 );
m.<a href="qwmatrix.html#84df75">rotate</a>( 180 );
}
<a href="qstring.html">QString</a> tmp;
tmp.<a name="sprintf"></a><a href="qstring.html#2eb9bc">sprintf</a>( "%1.2f", shearVal );
if ( shearVal >= 0 )
tmp.<a name="insert"></a><a href="qstring.html#2a68e1">insert</a>( 0, " " );
shearLCD-><a href="qlcdnumber.html#0eaac4">display</a>( tmp );
int rot = rotS-><a href="qslider.html#8f52b8">value</a>();
if ( rot < 0 )
rot = rot + 360;
tmp.<a href="qstring.html#2eb9bc">sprintf</a>( "%3i'", rot );
rotLCD-><a href="qlcdnumber.html#0eaac4">display</a>( tmp );
return m;
}
void <a name="153"></a>XFormControl::selectFont()
{
bool ok;
<a href="qfont.html">QFont</a> f = QFontDialog::getFont( &ok, currentFont );
if ( ok ) {
currentFont = f;
<a name="fontSelected"></a><a href="#154">fontSelected</a>( f );
}
}
void <a name="154"></a>XFormControl::fontSelected( const QFont &font )
{
emit newFont( font );
<a href=#155>changeMode</a>(Text);
}
/*
Sets the mode - Text, Image, or Picture.
*/
void <a name="155"></a>XFormControl::changeMode(int m)
{
mode = (Mode)m;
emit newMode( m );
<a name="newMtx"></a><a href="#150">newMtx</a>();
if ( mode == Text ) {
optionals-><a name="raiseWidget"></a><a href="qwidgetstack.html#271afe">raiseWidget</a>(0);
rb_txt-><a href="qradiobutton.html#11e2e3">setChecked</a>(TRUE);
} else {
optionals-><a href="qwidgetstack.html#271afe">raiseWidget</a>(1);
if ( mode == Image )
rb_img-><a href="qradiobutton.html#11e2e3">setChecked</a>(TRUE);
else
rb_pic-><a href="qradiobutton.html#11e2e3">setChecked</a>(TRUE);
}
qApp->flushX();
}
ShowXForm::ShowXForm( const QFont &initialFont,
<a href="qwidget.html">QWidget</a> *parent, const char *name )
: <a href="qwidget.html">QWidget</a>( parent, name, WResizeNoErase )
{
<a name="setFont"></a><a href="qwidget.html#dde00b">setFont</a>( initialFont );
<a name="setBackgroundColor"></a><a href="qwidget.html#721b7d">setBackgroundColor</a>( white );
m = Text;
eraseRect = QRect( 0, 0, 0, 0 );
}
<a href="qsizepolicy.html">QSizePolicy</a> <a name="138"></a>ShowXForm::sizePolicy() const
{
return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
}
<a href="qsize.html">QSize</a> <a name="139"></a>ShowXForm::sizeHint() const
{
return QSize(400,400);
}
void <a name="140"></a>ShowXForm::paintEvent( <a href="qpaintevent.html">QPaintEvent</a> * )
{
<a name="showIt"></a><a href="#148">showIt</a>();
}
void <a name="141"></a>ShowXForm::resizeEvent( <a href="qresizeevent.html">QResizeEvent</a> * )
{
eraseRect = QRect( <a name="width"></a><a href="qwidget.html#576663">width</a>()/2, <a name="height"></a><a href="qwidget.html#180786">height</a>()/2, 0, 0 );
<a name="repaint"></a><a href="qwidget.html#977d49">repaint</a>(rect());
}
void <a name="142"></a>ShowXForm::setText( const QString& s )
{
text = s;
<a href=#148>showIt</a>();
}
void <a name="143"></a>ShowXForm::setMatrix( <a href="qwmatrix.html">QWMatrix</a> w )
{
mtx = w;
<a href=#148>showIt</a>();
}
void <a name="144"></a>ShowXForm::setFont( const QFont &f )
{
m = Text;
<a name="setFont"></a><a href="qwidget.html#26de4b">QWidget::setFont</a>( f );
}
void <a name="145"></a>ShowXForm::setPixmap( <a href="qpixmap.html">QPixmap</a> pm )
{
pix = pm;
m = Image;
<a href=#148>showIt</a>();
}
void <a name="146"></a>ShowXForm::setPicture( const QPicture& p )
{
picture = p;
m = Picture;
<a href=#148>showIt</a>();
}
void <a name="147"></a>ShowXForm::setMode( int mode )
{
m = (Mode)mode;
}
void <a name="148"></a>ShowXForm::showIt()
{
<a name="QPainter"></a><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 name="QFontMetrics"></a><a href="qfontmetrics.html">QFontMetrics</a> fm( <a name="fontMetrics"></a><a href="qwidget.html#d0d02b">fontMetrics</a>() ); // get widget font metrics
switch ( mode() ) {
case Text:
br = fm.<a name="boundingRect"></a><a href="qfontmetrics.html#0f95c3">boundingRect</a>( text ); // rectangle covering text
r = br;
textYPos = -r.<a name="y"></a><a href="qrect.html#65e614">y</a>();
textXPos = -r.<a name="x"></a><a href="qrect.html#3a3d38">x</a>();
br.<a name="moveTopLeft"></a><a href="qrect.html#39b545">moveTopLeft</a>( <a name="QPoint"></a><a href="qpoint.html">QPoint</a>( -br.<a name="width"></a><a href="qrect.html#44fb71">width</a>()/2, -br.<a name="height"></a><a href="qrect.html#5d9fd1">height</a>()/2 ) );
break;
case Image:
r = pix.<a name="rect"></a><a href="qpixmap.html#1c205e">rect</a>();
break;
case Picture:
// ### need QPicture::boundingRect()
r = QRect(0,0,1000,1000);
break;
}
r.<a href="qrect.html#39b545">moveTopLeft</a>( <a href="qpoint.html">QPoint</a>(-r.<a href="qrect.html#44fb71">width</a>()/2, -r.<a href="qrect.html#5d9fd1">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
eraseRect = eraseRect.<a name="unite"></a><a href="qrect.html#dd997c">unite</a>( mtx.<a name="map"></a><a href="qwmatrix.html#38577f">map</a>(r) );
eraseRect.<a name="moveBy"></a><a href="qrect.html#35f691">moveBy</a>( -1, -1 ); // add border for matrix round off
eraseRect.<a name="setSize"></a><a href="qrect.html#ba264e">setSize</a>( <a href="qsize.html">QSize</a>( eraseRect.<a href="qrect.html#44fb71">width</a>() + 2,eraseRect.<a href="qrect.html#5d9fd1">height</a>() + 2 ) );
int pw = QMIN(eraseRect.<a href="qrect.html#44fb71">width</a>(),<a href="qwidget.html#576663">width</a>());
int ph = QMIN(eraseRect.<a href="qrect.html#5d9fd1">height</a>(),<a href="qwidget.html#180786">height</a>());
<a href="qpixmap.html">QPixmap</a> pm( pw, ph ); // off-screen drawing pixmap
pm.<a name="fill"></a><a href="qpixmap.html#e584bd">fill</a>( <a name="backgroundColor"></a><a href="qwidget.html#370ea4">backgroundColor</a>() );
p.begin( &pm );
um.<a name="translate"></a><a href="qwmatrix.html#226fc6">translate</a>( pw/2, ph/2 ); // 0,0 is center
um = mtx * um;
p.setWorldMatrix( um );
switch ( mode() ) {
case Text:
p.setFont( <a name="font"></a><a href="qwidget.html#3a7237">font</a>() ); // use widget font
p.drawText( r.<a name="left"></a><a href="qrect.html#d0f453">left</a>() + textXPos, r.<a name="top"></a><a href="qrect.html#a9c6db">top</a>() + textYPos, text );
#if 0
p.setPen( red );
p.drawRect( br );
#endif
break;
case Image:
p.drawPixmap( -pix.<a name="width"></a><a href="qpixmap.html#443c1f">width</a>()/2, -pix.<a name="height"></a><a href="qpixmap.html#1d578d">height</a>()/2, pix );
//QPixmap rotated = pix.<a name="xForm"></a><a href="qpixmap.html#3b77c0">xForm</a>(mtx);
//bitBlt( &pm, pm.<a href="qpixmap.html#443c1f">width</a>()/2 - rotated.width()/2,
//pm.<a href="qpixmap.html#1d578d">height</a>()/2 - rotated.height()/2, &rotated );
break;
case Picture:
// ### need QPicture::boundingRect()
p.scale(0.25,0.25);
p.translate(-230,-180);
p.drawPicture( picture );
}
p.end();
int xpos = width()/2 - pw/2;
int ypos = height()/2 - ph/2;
<a name="bitBlt"></a><a href="qpaintdevice.html#058006">bitBlt</a>( this, xpos, ypos, // copy pixmap to widget
&pm, 0, 0, -1, -1 );
eraseRect = mtx.<a href="qwmatrix.html#38577f">map</a>( r );
}
/*
Grand unifying widget, putting ShowXForm and XFormControl
together.
*/
class XFormCenter : public QHBox, public ModeNames
{
Q_OBJECT
public:
XFormCenter( <a href="qwidget.html">QWidget</a> *parent=0, const char *name=0 );
public slots:
void setFont( const QFont &f ) { sx-><a href="qwidget.html#26de4b">setFont</a>( f ); }
void newMode( int );
private:
ShowXForm *sx;
XFormControl *xc;
};
void <a name="137"></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;
if ( pm.<a name="load"></a><a href="qpixmap.html#775e08">load</a>( "image.any" ) )
sx->setPixmap( pm );
return;
}
if ( m == Picture && first_p ) {
first_p = FALSE;
<a href="qpicture.html">QPicture</a> p;
if (p.<a name="load"></a><a href="qpicture.html#acc5b8">load</a>( "picture.any" ))
sx->setPicture( p );
return;
}
sx->setMode(m);
}
XFormCenter::XFormCenter( <a href="qwidget.html">QWidget</a> *parent, const char *name )
: <a name="QHBox"></a><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 name="setStretchFactor"></a><a href="qhbox.html#b97571">setStretchFactor</a>(sx,1);
xc-><a name="setFrameStyle"></a><a href="qframe.html#c0d758">setFrameStyle</a>( QFrame::Panel | QFrame::Raised );
xc-><a name="setLineWidth"></a><a href="qframe.html#bffeeb">setLineWidth</a>( 2 );
<a name="connect"></a><a href="qobject.html#c2d209">connect</a>( xc, SIGNAL(newText(const QString&)), sx,
SLOT(setText(const QString&)) );
<a href="qobject.html#c2d209">connect</a>( xc, SIGNAL(newMatrix(<a href="qwmatrix.html">QWMatrix</a>)),
sx, SLOT(setMatrix(<a href="qwmatrix.html">QWMatrix</a>)) );
<a href="qobject.html#c2d209">connect</a>( xc, SIGNAL(newFont(const QFont&)), sx,
SLOT(<a href="qwidget.html#dde00b">setFont</a>(const QFont&)) );
<a href="qobject.html#c2d209">connect</a>( xc, SIGNAL(<a name="newMode"></a><a href="#137">newMode</a>(int)), SLOT(<a href=#137>newMode</a>(int)) );
sx->setText( "Troll" );
<a href=#137>newMode</a>( Image );
sx->setMatrix(xc->matrix());
}
int main( int argc, char **argv )
{
<a name="QApplication"></a><a href="qapplication.html">QApplication</a> a( argc, argv );
XFormCenter *xfc = new XFormCenter;
a.<a name="setMainWidget"></a><a href="qapplication.html#11c921">setMainWidget</a>( xfc );
xfc-><a name="show"></a><a href="qwidget.html#ccc8f7">show</a>();
return a.<a name="exec"></a><a href="qapplication.html#7076af">exec</a>();
}
#include "xform.moc" // include metadata generated by the moc
</pre>
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<table width="100%" cellspacing="0" border="0"><tr>
<td>Copyright 2000 Trolltech<td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a>
<td align="right"><div align="right">Qt version 2.3.1</div>
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