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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/xform/xform.doc:4 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Transformed Graphics Demo</title>
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<style type="text/css"><!--
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fn { margin-left: 1cm; text-indent: -1cm; }
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a:link { color: #004faf; text-decoration: none }
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a:visited { color: #672967; text-decoration: none }
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body { background: #ffffff; color: black; }
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--></style>
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</head>
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<body>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<font color="#004faf">Functions</font></a>
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</td>
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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>Transformed Graphics Demo</h1>
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<p>
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This example lets the user rotate, shear and scale text and graphics
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arbitrarily.
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<p> <hr>
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<p> Implementation:
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<p> <pre>/****************************************************************************
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** $Id: qt/xform.cpp 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include <<a href="qapplication-h.html">ntqapplication.h</a>>
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#include <<a href="qdialog-h.html">ntqdialog.h</a>>
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#include <<a href="qlabel-h.html">ntqlabel.h</a>>
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#include <<a href="qlineedit-h.html">ntqlineedit.h</a>>
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#include <<a href="qpushbutton-h.html">ntqpushbutton.h</a>>
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#include <<a href="qcheckbox-h.html">ntqcheckbox.h</a>>
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#include <<a href="qradiobutton-h.html">ntqradiobutton.h</a>>
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#include <<a href="qbuttongroup-h.html">ntqbuttongroup.h</a>>
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#include <<a href="qlcdnumber-h.html">ntqlcdnumber.h</a>>
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#include <<a href="qslider-h.html">ntqslider.h</a>>
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#include <<a href="qmenubar-h.html">ntqmenubar.h</a>>
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#include <<a href="qfontdialog-h.html">ntqfontdialog.h</a>>
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#include <<a href="qlayout-h.html">ntqlayout.h</a>>
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#include <<a href="qvbox-h.html">ntqvbox.h</a>>
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#include <<a href="qwidgetstack-h.html">ntqwidgetstack.h</a>>
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#include <<a href="qpainter-h.html">ntqpainter.h</a>>
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#include <<a href="qpixmap-h.html">ntqpixmap.h</a>>
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#include <<a href="qpicture-h.html">ntqpicture.h</a>>
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#include <stdlib.h>
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class ModeNames {
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public:
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enum Mode { Text, Image, Picture };
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};
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class XFormControl : public <a href="ntqvbox.html">TQVBox</a>, public ModeNames
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{
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<a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
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public:
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XFormControl( const <a href="ntqfont.html">TQFont</a> &initialFont, TQWidget *parent=0, const char *name=0 );
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~XFormControl() {}
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<a href="ntqwmatrix.html">TQWMatrix</a> matrix();
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signals:
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void newMatrix( <a href="ntqwmatrix.html">TQWMatrix</a> );
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void newText( const <a href="ntqstring.html">TQString</a>& );
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void newFont( const <a href="ntqfont.html">TQFont</a> & );
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void newMode( int );
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private slots:
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void newMtx();
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void newTxt(const <a href="ntqstring.html">TQString</a>&);
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void selectFont();
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void fontSelected( const <a href="ntqfont.html">TQFont</a> & );
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void changeMode(int);
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void timerEvent(TQTimerEvent*);
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private:
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Mode mode;
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<a href="ntqslider.html">TQSlider</a> *rotS; // Rotation angle scroll bar
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<a href="ntqslider.html">TQSlider</a> *shearS; // Shear value scroll bar
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<a href="ntqslider.html">TQSlider</a> *magS; // Magnification value scroll bar
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<a href="ntqlcdnumber.html">TQLCDNumber</a> *rotLCD; // Rotation angle LCD display
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<a href="ntqlcdnumber.html">TQLCDNumber</a> *shearLCD; // Shear value LCD display
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<a href="ntqlcdnumber.html">TQLCDNumber</a> *magLCD; // Magnification value LCD display
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<a href="ntqcheckbox.html">TQCheckBox</a> *mirror; // Checkbox for mirror image on/of
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<a href="ntqwidgetstack.html">TQWidgetStack</a>* optionals;
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<a href="ntqlineedit.html">TQLineEdit</a> *textEd; // Inp[ut field for xForm text
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<a href="ntqpushbutton.html">TQPushButton</a> *fpb; // Select font push button
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<a href="ntqradiobutton.html">TQRadioButton</a> *rb_txt; // Radio button for text
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<a href="ntqradiobutton.html">TQRadioButton</a> *rb_img; // Radio button for image
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<a href="ntqradiobutton.html">TQRadioButton</a> *rb_pic; // Radio button for picture
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<a href="ntqfont.html">TQFont</a> currentFont;
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};
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/*
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ShowXForm displays a text or a pixmap (TQPixmap) using a coordinate
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<a href="ntqwmatrix.html#TransformationMode">transformation matrix</a> (TQWMatrix)
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*/
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class ShowXForm : public <a href="ntqwidget.html">TQWidget</a>, public ModeNames
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{
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TQ_OBJECT
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public:
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ShowXForm( const <a href="ntqfont.html">TQFont</a> &f, TQWidget *parent=0, const char *name=0 );
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~ShowXForm() {}
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void showIt(); // (Re)displays text or pixmap
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Mode mode() const { return m; }
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public slots:
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void setText( const <a href="ntqstring.html">TQString</a>& );
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void setMatrix( <a href="ntqwmatrix.html">TQWMatrix</a> );
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void setFont( const <a href="ntqfont.html">TQFont</a> &f );
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void setPixmap( <a href="ntqpixmap.html">TQPixmap</a> );
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void setPicture( const <a href="ntqpicture.html">TQPicture</a>& );
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void setMode( int );
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private:
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<a href="ntqsizepolicy.html">TQSizePolicy</a> sizePolicy() const;
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<a href="ntqsize.html">TQSize</a> sizeHint() const;
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void paintEvent( <a href="qpaintevent.html">TQPaintEvent</a> * );
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void resizeEvent( <a href="qresizeevent.html">TQResizeEvent</a> * );
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<a href="ntqwmatrix.html">TQWMatrix</a> mtx; // coordinate transform matrix
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<a href="ntqstring.html">TQString</a> text; // text to be displayed
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<a href="ntqpixmap.html">TQPixmap</a> pix; // pixmap to be displayed
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<a href="ntqpicture.html">TQPicture</a> picture; // text to be displayed
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<a href="ntqrect.html">TQRect</a> eraseRect; // covers last displayed text/pixmap
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Mode m;
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};
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<a name="f397"></a>XFormControl::XFormControl( const <a href="ntqfont.html">TQFont</a> &initialFont,
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<a href="ntqwidget.html">TQWidget</a> *parent, const char *name )
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: <a href="ntqvbox.html">TQVBox</a>( parent, name )
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{
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<a href="ntqhbox.html#setSpacing">setSpacing</a>(6);
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<a href="ntqframe.html#setMargin">setMargin</a>(6);
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currentFont = initialFont;
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mode = Image;
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rotLCD = new <a href="ntqlcdnumber.html">TQLCDNumber</a>( 4, this, "rotateLCD" );
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rotS = new <a href="ntqslider.html">TQSlider</a>( TQSlider::Horizontal, this,
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"rotateSlider" );
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shearLCD = new <a href="ntqlcdnumber.html">TQLCDNumber</a>( 5,this, "shearLCD" );
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shearS = new <a href="ntqslider.html">TQSlider</a>( TQSlider::Horizontal, this,
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"shearSlider" );
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mirror = new <a href="ntqcheckbox.html">TQCheckBox</a>( this, "mirrorCheckBox" );
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rb_txt = new <a href="ntqradiobutton.html">TQRadioButton</a>( this, "text" );
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rb_img = new <a href="ntqradiobutton.html">TQRadioButton</a>( this, "image" );
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rb_pic = new <a href="ntqradiobutton.html">TQRadioButton</a>( this, "picture" );
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optionals = new <a href="ntqwidgetstack.html">TQWidgetStack</a>(this);
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<a href="ntqvbox.html">TQVBox</a>* optionals_text = new <a href="ntqvbox.html">TQVBox</a>(optionals);
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<a name="x1228"></a> optionals_text-><a href="ntqhbox.html#setSpacing">setSpacing</a>(6);
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<a href="ntqvbox.html">TQVBox</a>* optionals_other = new <a href="ntqvbox.html">TQVBox</a>(optionals);
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optionals_other-><a href="ntqhbox.html#setSpacing">setSpacing</a>(6);
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<a name="x1276"></a> optionals-><a href="ntqwidgetstack.html#addWidget">addWidget</a>(optionals_text,0);
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optionals-><a href="ntqwidgetstack.html#addWidget">addWidget</a>(optionals_other,1);
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fpb = new <a href="ntqpushbutton.html">TQPushButton</a>( optionals_text, "text" );
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textEd = new <a href="ntqlineedit.html">TQLineEdit</a>( optionals_text, "text" );
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textEd-><a href="ntqwidget.html#setFocus">setFocus</a>();
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<a name="x1229"></a> rotLCD-><a href="ntqlcdnumber.html#display">display</a>( " 0'" );
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<a name="x1250"></a> rotS-><a href="ntqrangecontrol.html#setRange">setRange</a>( -180, 180 );
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<a name="x1261"></a> rotS-><a href="ntqslider.html#setValue">setValue</a>( 0 );
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<a name="x1263"></a> <a href="ntqobject.html#connect">connect</a>( rotS, SIGNAL(<a href="ntqslider.html#valueChanged">valueChanged</a>(int)), SLOT(newMtx()) );
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shearLCD-><a href="ntqlcdnumber.html#display">display</a>( "0.00" );
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shearS-><a href="ntqrangecontrol.html#setRange">setRange</a>( -25, 25 );
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shearS-><a href="ntqslider.html#setValue">setValue</a>( 0 );
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<a href="ntqobject.html#connect">connect</a>( shearS, SIGNAL(<a href="ntqslider.html#valueChanged">valueChanged</a>(int)), SLOT(newMtx()) );
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<a name="x1220"></a> mirror-><a href="ntqbutton.html#setText">setText</a>( <a href="ntqobject.html#tr">tr</a>("Mirror") );
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<a href="ntqobject.html#connect">connect</a>( mirror, SIGNAL(<a href="ntqbutton.html#clicked">clicked</a>()), SLOT(newMtx()) );
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<a href="ntqbuttongroup.html">TQButtonGroup</a> *bg = new <a href="ntqbuttongroup.html">TQButtonGroup</a>(this);
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<a name="x1267"></a> bg-><a href="ntqwidget.html#hide">hide</a>();
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<a name="x1222"></a> bg-><a href="ntqbuttongroup.html#insert">insert</a>(rb_txt,0);
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bg-><a href="ntqbuttongroup.html#insert">insert</a>(rb_img,1);
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bg-><a href="ntqbuttongroup.html#insert">insert</a>(rb_pic,2);
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rb_txt-><a href="ntqbutton.html#setText">setText</a>( <a href="ntqobject.html#tr">tr</a>("Text") );
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rb_img-><a href="ntqbutton.html#setText">setText</a>( <a href="ntqobject.html#tr">tr</a>("Image") );
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<a name="x1249"></a> rb_img-><a href="ntqradiobutton.html#setChecked">setChecked</a>(TRUE);
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rb_pic-><a href="ntqbutton.html#setText">setText</a>( <a href="ntqobject.html#tr">tr</a>("Picture") );
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<a name="x1221"></a> <a href="ntqobject.html#connect">connect</a>( bg, SIGNAL(<a href="ntqbuttongroup.html#clicked">clicked</a>(int)), SLOT(changeMode(int)) );
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fpb-><a href="ntqbutton.html#setText">setText</a>( <a href="ntqobject.html#tr">tr</a>("Select font...") );
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<a href="ntqobject.html#connect">connect</a>( fpb, SIGNAL(<a href="ntqbutton.html#clicked">clicked</a>()), SLOT(selectFont()) );
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<a name="x1230"></a> textEd-><a href="ntqlineedit.html#setText">setText</a>( "Troll" );
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<a name="x1231"></a> <a href="ntqobject.html#connect">connect</a>( textEd, SIGNAL(<a href="ntqlineedit.html#textChanged">textChanged</a>(const <a href="ntqstring.html">TQString</a>&)),
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SLOT(newTxt(const <a href="ntqstring.html">TQString</a>&)) );
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magLCD = new <a href="ntqlcdnumber.html">TQLCDNumber</a>( 4,optionals_other, "magLCD" );
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magLCD-><a href="ntqlcdnumber.html#display">display</a>( "100" );
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magS = new <a href="ntqslider.html">TQSlider</a>( TQSlider::Horizontal, optionals_other,
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"magnifySlider" );
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magS-><a href="ntqrangecontrol.html#setRange">setRange</a>( 0, 800 );
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<a href="ntqobject.html#connect">connect</a>( magS, SIGNAL(<a href="ntqslider.html#valueChanged">valueChanged</a>(int)), SLOT(newMtx()) );
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magS-><a href="ntqslider.html#setValue">setValue</a>( 0 );
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<a href="ntqobject.html#connect">connect</a>( magS, SIGNAL(<a href="ntqslider.html#valueChanged">valueChanged</a>(int)), magLCD, SLOT(<a href="ntqlcdnumber.html#display">display</a>(int)));
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<a name="x1266"></a> optionals_text-><a href="ntqwidget.html#adjustSize">adjustSize</a>();
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optionals_other-><a href="ntqwidget.html#adjustSize">adjustSize</a>();
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changeMode(Image);
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<a href="ntqobject.html#startTimer">startTimer</a>(20); // start an initial animation
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}
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<a name="x1232"></a>void XFormControl::<a href="ntqobject.html#timerEvent">timerEvent</a>(TQTimerEvent*)
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{
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<a name="x1262"></a> int v = magS-><a href="ntqslider.html#value">value</a>();
|
|
|
|
|
v = (v+2)+v/10;
|
|
|
|
|
if ( v >= 200 ) {
|
|
|
|
|
v = 200;
|
|
|
|
|
<a href="ntqobject.html#killTimers">killTimers</a>();
|
|
|
|
|
}
|
|
|
|
|
magS-><a href="ntqslider.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="f398"></a>XFormControl::newMtx()
|
|
|
|
|
{
|
|
|
|
|
emit newMatrix( matrix() );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void <a name="f399"></a>XFormControl::newTxt(const <a href="ntqstring.html">TQString</a>& s)
|
|
|
|
|
{
|
|
|
|
|
emit newText(s);
|
|
|
|
|
changeMode(Text);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
Calculates the matrix appropriate for the current controls,
|
|
|
|
|
and updates the displays.
|
|
|
|
|
*/
|
|
|
|
|
TQWMatrix <a name="f400"></a>XFormControl::matrix()
|
|
|
|
|
{
|
|
|
|
|
<a href="ntqwmatrix.html">TQWMatrix</a> m;
|
|
|
|
|
if (mode != Text) {
|
|
|
|
|
double magVal = 1.0*magS-><a href="ntqslider.html#value">value</a>()/100;
|
|
|
|
|
<a name="x1281"></a> m.<a href="ntqwmatrix.html#scale">scale</a>( magVal, magVal );
|
|
|
|
|
}
|
|
|
|
|
double shearVal = 1.0*shearS-><a href="ntqslider.html#value">value</a>()/25;
|
|
|
|
|
<a name="x1282"></a> m.<a href="ntqwmatrix.html#shear">shear</a>( shearVal, shearVal );
|
|
|
|
|
<a name="x1280"></a> m.<a href="ntqwmatrix.html#rotate">rotate</a>( rotS-><a href="ntqslider.html#value">value</a>() );
|
|
|
|
|
<a name="x1223"></a> if ( mirror-><a href="ntqcheckbox.html#isChecked">isChecked</a>() ) {
|
|
|
|
|
m.<a href="ntqwmatrix.html#scale">scale</a>( 1, -1 );
|
|
|
|
|
m.<a href="ntqwmatrix.html#rotate">rotate</a>( 180 );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
<a href="ntqstring.html">TQString</a> tmp;
|
|
|
|
|
<a name="x1265"></a> tmp.<a href="ntqstring.html#sprintf">sprintf</a>( "%1.2f", shearVal );
|
|
|
|
|
if ( shearVal >= 0 )
|
|
|
|
|
<a name="x1264"></a> tmp.<a href="ntqstring.html#insert">insert</a>( 0, " " );
|
|
|
|
|
shearLCD-><a href="ntqlcdnumber.html#display">display</a>( tmp );
|
|
|
|
|
|
|
|
|
|
int rot = rotS-><a href="ntqslider.html#value">value</a>();
|
|
|
|
|
if ( rot < 0 )
|
|
|
|
|
rot = rot + 360;
|
|
|
|
|
tmp.<a href="ntqstring.html#sprintf">sprintf</a>( "%3i'", rot );
|
|
|
|
|
rotLCD-><a href="ntqlcdnumber.html#display">display</a>( tmp );
|
|
|
|
|
return m;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void <a name="f401"></a>XFormControl::selectFont()
|
|
|
|
|
{
|
|
|
|
|
bool ok;
|
|
|
|
|
<a name="x1224"></a> <a href="ntqfont.html">TQFont</a> f = TQFontDialog::<a href="ntqfontdialog.html#getFont">getFont</a>( &ok, currentFont );
|
|
|
|
|
if ( ok ) {
|
|
|
|
|
currentFont = f;
|
|
|
|
|
fontSelected( f );
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void <a name="f402"></a>XFormControl::fontSelected( const <a href="ntqfont.html">TQFont</a> &font )
|
|
|
|
|
{
|
|
|
|
|
emit newFont( font );
|
|
|
|
|
changeMode(Text);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
Sets the mode - Text, Image, or Picture.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
void <a name="f403"></a>XFormControl::changeMode(int m)
|
|
|
|
|
{
|
|
|
|
|
mode = (Mode)m;
|
|
|
|
|
|
|
|
|
|
emit newMode( m );
|
|
|
|
|
newMtx();
|
|
|
|
|
if ( mode == Text ) {
|
|
|
|
|
<a name="x1277"></a> optionals-><a href="ntqwidgetstack.html#raiseWidget">raiseWidget</a>(0);
|
|
|
|
|
rb_txt-><a href="ntqradiobutton.html#setChecked">setChecked</a>(TRUE);
|
|
|
|
|
} else {
|
|
|
|
|
optionals-><a href="ntqwidgetstack.html#raiseWidget">raiseWidget</a>(1);
|
|
|
|
|
if ( mode == Image )
|
|
|
|
|
rb_img-><a href="ntqradiobutton.html#setChecked">setChecked</a>(TRUE);
|
|
|
|
|
else
|
|
|
|
|
rb_pic-><a href="ntqradiobutton.html#setChecked">setChecked</a>(TRUE);
|
|
|
|
|
}
|
|
|
|
|
<a name="x1217"></a> qApp-><a href="ntqapplication.html#flushX">flushX</a>();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
<a name="f388"></a>ShowXForm::ShowXForm( const <a href="ntqfont.html">TQFont</a> &initialFont,
|
|
|
|
|
<a href="ntqwidget.html">TQWidget</a> *parent, const char *name )
|
|
|
|
|
: <a href="ntqwidget.html">TQWidget</a>( parent, name, WResizeNoErase )
|
|
|
|
|
{
|
|
|
|
|
<a href="ntqwidget.html#setFont">setFont</a>( initialFont );
|
|
|
|
|
<a href="ntqwidget.html#setBackgroundColor">setBackgroundColor</a>( white );
|
|
|
|
|
m = Text;
|
|
|
|
|
eraseRect = TQRect( 0, 0, 0, 0 );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
<a name="x1275"></a>TQSizePolicy ShowXForm::<a href="ntqwidget.html#sizePolicy">sizePolicy</a>() const
|
|
|
|
|
{
|
|
|
|
|
return TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Expanding );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
<a name="x1274"></a>TQSize ShowXForm::<a href="ntqwidget.html#sizeHint">sizeHint</a>() const
|
|
|
|
|
{
|
|
|
|
|
return TQSize(400,400);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void ShowXForm::<a href="ntqwidget.html#paintEvent">paintEvent</a>( <a href="qpaintevent.html">TQPaintEvent</a> * )
|
|
|
|
|
{
|
|
|
|
|
showIt();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
<a name="x1269"></a>void ShowXForm::<a href="ntqwidget.html#resizeEvent">resizeEvent</a>( <a href="qresizeevent.html">TQResizeEvent</a> * )
|
|
|
|
|
{
|
|
|
|
|
eraseRect = TQRect( <a href="ntqwidget.html#width">width</a>()/2, height()/2, 0, 0 );
|
|
|
|
|
<a href="ntqwidget.html#repaint">repaint</a>(<a href="ntqwidget.html#rect">rect</a>());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void <a name="f389"></a>ShowXForm::setText( const <a href="ntqstring.html">TQString</a>& s )
|
|
|
|
|
{
|
|
|
|
|
text = s;
|
|
|
|
|
showIt();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void <a name="f390"></a>ShowXForm::setMatrix( <a href="ntqwmatrix.html">TQWMatrix</a> w )
|
|
|
|
|
{
|
|
|
|
|
mtx = w;
|
|
|
|
|
showIt();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
<a name="x1272"></a>void ShowXForm::<a href="ntqwidget.html#setFont">setFont</a>( const <a href="ntqfont.html">TQFont</a> &f )
|
|
|
|
|
{
|
|
|
|
|
m = Text;
|
|
|
|
|
TQWidget::<a href="ntqwidget.html#setFont">setFont</a>( f );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void <a name="f391"></a>ShowXForm::setPixmap( <a href="ntqpixmap.html">TQPixmap</a> pm )
|
|
|
|
|
{
|
|
|
|
|
pix = pm;
|
|
|
|
|
m = Image;
|
|
|
|
|
showIt();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void <a name="f392"></a>ShowXForm::setPicture( const <a href="ntqpicture.html">TQPicture</a>& p )
|
|
|
|
|
{
|
|
|
|
|
picture = p;
|
|
|
|
|
m = Picture;
|
|
|
|
|
showIt();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void <a name="f393"></a>ShowXForm::setMode( int mode )
|
|
|
|
|
{
|
|
|
|
|
m = (Mode)mode;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void <a name="f394"></a>ShowXForm::showIt()
|
|
|
|
|
{
|
|
|
|
|
<a href="ntqpainter.html">TQPainter</a> p;
|
|
|
|
|
<a href="ntqrect.html">TQRect</a> r; // rectangle covering new text/pixmap in virtual coordinates
|
|
|
|
|
<a href="ntqwmatrix.html">TQWMatrix</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="ntqrect.html">TQRect</a> br;
|
|
|
|
|
<a href="ntqfontmetrics.html">TQFontMetrics</a> fm( <a href="ntqwidget.html#fontMetrics">fontMetrics</a>() ); // get widget font metrics
|
|
|
|
|
switch ( mode() ) {
|
|
|
|
|
case Text:
|
|
|
|
|
<a name="x1225"></a> br = fm.<a href="ntqfontmetrics.html#boundingRect">boundingRect</a>( text ); // rectangle covering text
|
|
|
|
|
r = br;
|
|
|
|
|
textYPos = -r.<a href="ntqrect.html#y">y</a>();
|
|
|
|
|
textXPos = -r.<a href="ntqrect.html#x">x</a>();
|
|
|
|
|
<a name="x1258"></a><a name="x1254"></a><a name="x1251"></a> br.<a href="ntqrect.html#moveTopLeft">moveTopLeft</a>( TQPoint( -br.<a href="ntqrect.html#width">width</a>()/2, -br.<a href="ntqrect.html#height">height</a>()/2 ) );
|
|
|
|
|
break;
|
|
|
|
|
case Image:
|
|
|
|
|
<a name="x1248"></a><a name="x1246"></a> r = TQRect(0, 0, pix.<a href="ntqpixmap.html#width">width</a>()+1, pix.<a href="ntqpixmap.html#height">height</a>()+1);
|
|
|
|
|
break;
|
|
|
|
|
case Picture:
|
|
|
|
|
// ### need TQPicture::boundingRect()
|
|
|
|
|
r = TQRect(0,0,1000,1000);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
r.<a href="ntqrect.html#moveTopLeft">moveTopLeft</a>( TQPoint(-r.<a href="ntqrect.html#width">width</a>()/2, -r.<a href="ntqrect.html#height">height</a>()/2) );
|
|
|
|
|
<a name="x1253"></a> r.<a href="ntqrect.html#moveBy">moveBy</a>( -1, -1 ); // add border for matrix round off
|
|
|
|
|
<a name="x1255"></a> r.<a href="ntqrect.html#setSize">setSize</a>( TQSize( r.<a href="ntqrect.html#width">width</a>() + 2,r.<a href="ntqrect.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="x1279"></a><a name="x1257"></a> eraseRect = eraseRect.<a href="ntqrect.html#unite">unite</a>( mtx.<a href="ntqwmatrix.html#mapRect">mapRect</a>(r) );
|
|
|
|
|
int pw = TQMIN(eraseRect.<a href="ntqrect.html#width">width</a>(),width());
|
|
|
|
|
int ph = TQMIN(eraseRect.<a href="ntqrect.html#height">height</a>(),height());
|
|
|
|
|
<a href="ntqpixmap.html">TQPixmap</a> pm( pw, ph ); // off-screen drawing pixmap
|
|
|
|
|
<a name="x1245"></a> pm.<a href="ntqpixmap.html#fill">fill</a>( <a href="ntqwidget.html#backgroundColor">backgroundColor</a>() );
|
|
|
|
|
|
|
|
|
|
<a name="x1233"></a> p.<a href="ntqpainter.html#begin">begin</a>( &pm );
|
|
|
|
|
<a name="x1283"></a> um.<a href="ntqwmatrix.html#translate">translate</a>( pw/2, ph/2 ); // 0,0 is center
|
|
|
|
|
um = mtx * um;
|
|
|
|
|
<a name="x1242"></a> p.<a href="ntqpainter.html#setWorldMatrix">setWorldMatrix</a>( um );
|
|
|
|
|
switch ( mode() ) {
|
|
|
|
|
case Text:
|
|
|
|
|
<a name="x1240"></a> p.<a href="ntqpainter.html#setFont">setFont</a>( <a href="ntqwidget.html#font">font</a>() ); // use widget font
|
|
|
|
|
<a name="x1256"></a><a name="x1252"></a> p.<a href="ntqpainter.html#drawText">drawText</a>( r.<a href="ntqrect.html#left">left</a>() + textXPos, r.<a href="ntqrect.html#top">top</a>() + textYPos, text );
|
|
|
|
|
#if 0
|
|
|
|
|
p.<a href="ntqpainter.html#setPen">setPen</a>( red );
|
|
|
|
|
p.<a href="ntqpainter.html#drawRect">drawRect</a>( br );
|
|
|
|
|
#endif
|
|
|
|
|
break;
|
|
|
|
|
case Image:
|
|
|
|
|
<a name="x1235"></a> p.<a href="ntqpainter.html#drawPixmap">drawPixmap</a>( -pix.<a href="ntqpixmap.html#width">width</a>()/2, -pix.<a href="ntqpixmap.html#height">height</a>()/2, pix );
|
|
|
|
|
break;
|
|
|
|
|
case Picture:
|
|
|
|
|
// ### need TQPicture::boundingRect()
|
|
|
|
|
<a name="x1239"></a> p.<a href="ntqpainter.html#scale">scale</a>(0.25,0.25);
|
|
|
|
|
<a name="x1243"></a> p.<a href="ntqpainter.html#translate">translate</a>(-230,-180);
|
|
|
|
|
<a name="x1234"></a> p.<a href="ntqpainter.html#drawPicture">drawPicture</a>( picture );
|
|
|
|
|
}
|
|
|
|
|
<a name="x1238"></a> p.<a href="ntqpainter.html#end">end</a>();
|
|
|
|
|
|
|
|
|
|
int xpos = <a href="ntqwidget.html#width">width</a>()/2 - pw/2;
|
|
|
|
|
int ypos = <a href="ntqwidget.html#height">height</a>()/2 - ph/2;
|
|
|
|
|
<a href="ntqimage.html#bitBlt">bitBlt</a>( this, xpos, ypos, // copy pixmap to widget
|
|
|
|
|
&pm, 0, 0, -1, -1 );
|
|
|
|
|
<a name="x1278"></a> eraseRect = mtx.<a href="ntqwmatrix.html#map">map</a>( r );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
Grand unifying widget, putting ShowXForm and XFormControl
|
|
|
|
|
together.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
class XFormCenter : public <a href="ntqhbox.html">TQHBox</a>, public ModeNames
|
|
|
|
|
{
|
|
|
|
|
TQ_OBJECT
|
|
|
|
|
public:
|
|
|
|
|
XFormCenter( <a href="ntqwidget.html">TQWidget</a> *parent=0, const char *name=0 );
|
|
|
|
|
public slots:
|
|
|
|
|
void setFont( const <a href="ntqfont.html">TQFont</a> &f ) { sx-><a href="ntqwidget.html#setFont">setFont</a>( f ); }
|
|
|
|
|
void newMode( int );
|
|
|
|
|
private:
|
|
|
|
|
ShowXForm *sx;
|
|
|
|
|
XFormControl *xc;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
void <a name="f395"></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="ntqpixmap.html">TQPixmap</a> pm;
|
|
|
|
|
<a name="x1247"></a> if ( pm.<a href="ntqpixmap.html#load">load</a>( "image.any" ) )
|
|
|
|
|
sx->setPixmap( pm );
|
|
|
|
|
return;
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|
|
|
|
}
|
|
|
|
|
if ( m == Picture && first_p ) {
|
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|
|
|
first_p = FALSE;
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|
|
|
|
<a href="ntqpicture.html">TQPicture</a> p;
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|
|
|
|
<a name="x1244"></a> if (p.<a href="ntqpicture.html#load">load</a>( "picture.any" ))
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|
|
|
sx->setPicture( p );
|
|
|
|
|
return;
|
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|
|
|
}
|
|
|
|
|
sx->setMode(m);
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|
|
|
|
}
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|
|
|
|
|
|
|
|
|
<a name="f396"></a>XFormCenter::XFormCenter( <a href="ntqwidget.html">TQWidget</a> *parent, const char *name )
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|
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|
|
: <a href="ntqhbox.html">TQHBox</a>( parent, name )
|
|
|
|
|
{
|
|
|
|
|
<a href="ntqfont.html">TQFont</a> f( "Charter", 36, TQFont::Bold );
|
|
|
|
|
|
|
|
|
|
xc = new XFormControl( f, this );
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|
|
|
|
sx = new ShowXForm( f, this );
|
|
|
|
|
<a href="ntqhbox.html#setStretchFactor">setStretchFactor</a>(sx,1);
|
|
|
|
|
xc-><a href="ntqframe.html#setFrameStyle">setFrameStyle</a>( TQFrame::Panel | TQFrame::Raised );
|
|
|
|
|
<a name="x1227"></a> xc-><a href="ntqframe.html#setLineWidth">setLineWidth</a>( 2 );
|
|
|
|
|
<a href="ntqobject.html#connect">connect</a>( xc, SIGNAL(newText(const <a href="ntqstring.html">TQString</a>&)), sx,
|
|
|
|
|
SLOT(setText(const <a href="ntqstring.html">TQString</a>&)) );
|
|
|
|
|
<a href="ntqobject.html#connect">connect</a>( xc, SIGNAL(newMatrix(TQWMatrix)),
|
|
|
|
|
sx, SLOT(setMatrix(TQWMatrix)) );
|
|
|
|
|
<a href="ntqobject.html#connect">connect</a>( xc, SIGNAL(newFont(const <a href="ntqfont.html">TQFont</a>&)), sx,
|
|
|
|
|
SLOT(<a href="ntqwidget.html#setFont">setFont</a>(const <a href="ntqfont.html">TQFont</a>&)) );
|
|
|
|
|
<a href="ntqobject.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="ntqapplication.html">TQApplication</a> a( argc, argv );
|
|
|
|
|
|
|
|
|
|
XFormCenter *xfc = new XFormCenter;
|
|
|
|
|
|
|
|
|
|
a.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( xfc );
|
|
|
|
|
xfc-><a href="ntqwidget.html#setCaption">setCaption</a>("TQt Example - XForm");
|
|
|
|
|
xfc-><a href="ntqwidget.html#show">show</a>();
|
|
|
|
|
return a.<a href="ntqapplication.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 © 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>
|
