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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>qpainter.h</h1>
<p>This is the verbatim text of the qpainter.h include file. It is provided only for illustration; the copyright remains with Trolltech.
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/****************************************************************************
** $Id: qt/qpainter.h 3.3.8 edited Jan 11 14:38 $
**
** Definition of QPainter class
**
** Created : 940112
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Alternatively you may (at your option) use any
** later version of the GNU General Public License if such license has
** been publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file. Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#ifndef QPAINTER_H
#define QPAINTER_H
#ifndef QT_H
#include "qcolor.h"
#include "qfontmetrics.h"
#include "qfontinfo.h"
#include "qregion.h"
#include "qpen.h"
#include "qbrush.h"
#include "qpointarray.h"
#include "qwmatrix.h"
#endif // QT_H
class QGfx;
class QTextCodec;
class QTextParag;
class QPaintDevice;
class QTextItem;
#if defined( Q_WS_MAC )
class QMacSavedPortInfo;
#endif
class QPainterPrivate;
#if defined(Q_WS_QWS)
class QScreen;
#endif
class Q_EXPORT QPainter : public Qt
{
public:
enum CoordinateMode { CoordDevice, CoordPainter };
QPainter();
QPainter( const QPaintDevice *, bool unclipped = FALSE );
QPainter( const QPaintDevice *, const QWidget *, bool unclipped = FALSE );
~QPainter();
bool begin( const QPaintDevice *, bool unclipped = FALSE );
bool begin( const QPaintDevice *, const QWidget *, bool unclipped = FALSE );
bool end();
QPaintDevice *device() const;
#ifdef Q_WS_QWS
QGfx * internalGfx();
#ifdef QT_QWS_EXPERIMENTAL_SCREENPAINTER
bool begin(QScreen *screen);
#endif
#endif
static void redirect( QPaintDevice *pdev, QPaintDevice *replacement );
static QPaintDevice *redirect( QPaintDevice *pdev );
bool isActive() const;
void flush( const QRegion &region, CoordinateMode cm = CoordDevice );
void flush();
void save();
void restore();
// Drawing tools
QFontMetrics fontMetrics() const;
QFontInfo fontInfo() const;
const QFont &font() const;
void setFont( const QFont & );
const QPen &pen() const;
void setPen( const QPen & );
void setPen( PenStyle );
void setPen( const QColor & );
const QBrush &brush() const;
void setBrush( const QBrush & );
void setBrush( BrushStyle );
void setBrush( const QColor & );
QPoint pos() const;
// Drawing attributes/modes
const QColor &backgroundColor() const;
void setBackgroundColor( const QColor & );
BGMode backgroundMode() const;
void setBackgroundMode( BGMode );
RasterOp rasterOp() const;
void setRasterOp( RasterOp );
const QPoint &brushOrigin() const;
void setBrushOrigin( int x, int y );
void setBrushOrigin( const QPoint & );
// Scaling and transformations
// PaintUnit unit() const; // get set painter unit
// void setUnit( PaintUnit ); // NOT IMPLEMENTED!!!
bool hasViewXForm() const;
bool hasWorldXForm() const;
#ifndef QT_NO_TRANSFORMATIONS
void setViewXForm( bool ); // set xform on/off
QRect window() const; // get window
void setWindow( const QRect & ); // set window
void setWindow( int x, int y, int w, int h );
QRect viewport() const; // get viewport
void setViewport( const QRect & ); // set viewport
void setViewport( int x, int y, int w, int h );
void setWorldXForm( bool ); // set world xform on/off
const QWMatrix &worldMatrix() const; // get/set world xform matrix
void setWorldMatrix( const QWMatrix &, bool combine=FALSE );
void saveWorldMatrix();
void restoreWorldMatrix();
void scale( double sx, double sy );
void shear( double sh, double sv );
void rotate( double a );
#endif
void translate( double dx, double dy );
void resetXForm();
double translationX() const;
double translationY() const;
QPoint xForm( const QPoint & ) const; // map virtual -> device
QRect xForm( const QRect & ) const;
QPointArray xForm( const QPointArray & ) const;
QPointArray xForm( const QPointArray &, int index, int npoints ) const;
QPoint xFormDev( const QPoint & ) const; // map device -> virtual
QRect xFormDev( const QRect & ) const;
QPointArray xFormDev( const QPointArray & ) const;
QPointArray xFormDev( const QPointArray &, int index, int npoints ) const;
// Clipping
void setClipping( bool ); // set clipping on/off
bool hasClipping() const;
QRegion clipRegion( CoordinateMode = CoordDevice ) const;
void setClipRect( const QRect &, CoordinateMode = CoordDevice ); // set clip rectangle
void setClipRect( int x, int y, int w, int h, CoordinateMode = CoordDevice );
void setClipRegion( const QRegion &, CoordinateMode = CoordDevice );// set clip region
// Graphics drawing functions
void drawPoint( int x, int y );
void drawPoint( const QPoint & );
void drawPoints( const QPointArray& a,
int index=0, int npoints=-1 );
void moveTo( int x, int y );
void moveTo( const QPoint & );
void lineTo( int x, int y );
void lineTo( const QPoint & );
void drawLine( int x1, int y1, int x2, int y2 );
void drawLine( const QPoint &, const QPoint & );
void drawRect( int x, int y, int w, int h );
void drawRect( const QRect & );
void drawWinFocusRect( int x, int y, int w, int h );
void drawWinFocusRect( int x, int y, int w, int h,
const QColor &bgColor );
void drawWinFocusRect( const QRect & );
void drawWinFocusRect( const QRect &,
const QColor &bgColor );
void drawRoundRect( int x, int y, int w, int h, int = 25, int = 25 );
void drawRoundRect( const QRect &, int = 25, int = 25 );
void drawEllipse( int x, int y, int w, int h );
void drawEllipse( const QRect & );
void drawArc( int x, int y, int w, int h, int a, int alen );
void drawArc( const QRect &, int a, int alen );
void drawPie( int x, int y, int w, int h, int a, int alen );
void drawPie( const QRect &, int a, int alen );
void drawChord( int x, int y, int w, int h, int a, int alen );
void drawChord( const QRect &, int a, int alen );
void drawLineSegments( const QPointArray &,
int index=0, int nlines=-1 );
void drawPolyline( const QPointArray &,
int index=0, int npoints=-1 );
void drawPolygon( const QPointArray &, bool winding=FALSE,
int index=0, int npoints=-1 );
void drawConvexPolygon( const QPointArray &,
int index=0, int npoints=-1 );
#ifndef QT_NO_BEZIER
void drawCubicBezier( const QPointArray &, int index=0 );
#endif
void drawPixmap( int x, int y, const QPixmap &,
int sx=0, int sy=0, int sw=-1, int sh=-1 );
void drawPixmap( const QPoint &, const QPixmap &,
const QRect &sr );
void drawPixmap( const QPoint &, const QPixmap & );
void drawPixmap( const QRect &, const QPixmap & );
void drawImage( int x, int y, const QImage &,
int sx = 0, int sy = 0, int sw = -1, int sh = -1,
int conversionFlags = 0 );
void drawImage( const QPoint &, const QImage &,
const QRect &sr, int conversionFlags = 0 );
void drawImage( const QPoint &, const QImage &,
int conversion_flags = 0 );
void drawImage( const QRect &, const QImage & );
void drawTiledPixmap( int x, int y, int w, int h, const QPixmap &,
int sx=0, int sy=0 );
void drawTiledPixmap( const QRect &, const QPixmap &,
const QPoint & );
void drawTiledPixmap( const QRect &, const QPixmap & );
#ifndef QT_NO_PICTURE
void drawPicture( const QPicture & );
void drawPicture( int x, int y, const QPicture & );
void drawPicture( const QPoint &, const QPicture & );
#endif
void fillRect( int x, int y, int w, int h, const QBrush & );
void fillRect( const QRect &, const QBrush & );
void eraseRect( int x, int y, int w, int h );
void eraseRect( const QRect & );
// Text drawing functions
enum TextDirection {
Auto,
RTL,
LTR
};
void drawText( int x, int y, const QString &, int len = -1, TextDirection dir = Auto );
void drawText( const QPoint &, const QString &, int len = -1, TextDirection dir = Auto );
void drawText( int x, int y, const QString &, int pos, int len, TextDirection dir = Auto );
void drawText( const QPoint &p, const QString &, int pos, int len, TextDirection dir = Auto );
void drawText( int x, int y, int w, int h, int flags,
const QString&, int len = -1, QRect *br=0,
QTextParag **intern=0 );
void drawText( const QRect &, int flags,
const QString&, int len = -1, QRect *br=0,
QTextParag **intern=0 );
void drawTextItem( int x, int y, const QTextItem &ti, int textflags = 0 );
void drawTextItem( const QPoint& p, const QTextItem &ti, int textflags = 0 );
QRect boundingRect( int x, int y, int w, int h, int flags,
const QString&, int len = -1, QTextParag **intern=0 );
QRect boundingRect( const QRect &, int flags,
const QString&, int len = -1, QTextParag **intern=0 );
int tabStops() const;
void setTabStops( int );
int *tabArray() const;
void setTabArray( int * );
// Other functions
#if defined(Q_WS_WIN)
HDC handle() const;
#elif defined(Q_WS_X11) || defined(Q_WS_MAC)
HANDLE handle() const;
#endif
static void initialize();
static void cleanup();
private:
void init();
void destroy();
void updateFont();
void updatePen();
void updateBrush();
#ifndef QT_NO_TRANSFORMATIONS
void updateXForm();
void updateInvXForm();
#endif
void map( int, int, int *rx, int *ry ) const;
void map( int, int, int, int, int *, int *, int *, int * ) const;
void mapInv( int, int, int *, int * ) const;
void mapInv( int, int, int, int, int *, int *, int *, int * ) const;
void drawPolyInternal( const QPointArray &, bool close=TRUE );
void drawWinFocusRect( int x, int y, int w, int h, bool xorPaint,
const QColor &penColor );
enum { IsActive=0x01, ExtDev=0x02, IsStartingUp=0x04, NoCache=0x08,
VxF=0x10, WxF=0x20, ClipOn=0x40, SafePolygon=0x80, MonoDev=0x100,
DirtyFont=0x200, DirtyPen=0x400, DirtyBrush=0x800,
RGBColor=0x1000, FontMet=0x2000, FontInf=0x4000, CtorBegin=0x8000,
UsePrivateCx = 0x10000, VolatileDC = 0x20000, Qt2Compat = 0x40000 };
uint flags;
bool testf( uint b ) const { return (flags&b)!=0; }
void setf( uint b ) { flags |= b; }
void setf( uint b, bool v );
void clearf( uint b ) { flags &= (uint)(~b); }
void fix_neg_rect( int *x, int *y, int *w, int *h );
QPainterPrivate *d;
QPaintDevice *pdev;
QColor bg_col;
uchar bg_mode;
uchar rop;
uchar pu;
QPoint bro;
QFont cfont;
QFont *pfont; // font used for metrics (might be different for printers)
QPen cpen;
QBrush cbrush;
QRegion crgn;
int tabstops;
int *tabarray;
int tabarraylen;
bool block_ext; // for temporary blocking of external devices
// Transformations
#ifndef QT_NO_TRANSFORMATIONS
QCOORD wx, wy, ww, wh;
QCOORD vx, vy, vw, vh;
QWMatrix wxmat;
// Cached composition (and inverse) of transformations
QWMatrix xmat;
QWMatrix ixmat;
double m11() const { return xmat.m11(); }
double m12() const { return xmat.m12(); }
double m21() const { return xmat.m21(); }
double m22() const { return xmat.m22(); }
double dx() const { return xmat.dx(); }
double dy() const { return xmat.dy(); }
double im11() const { return ixmat.m11(); }
double im12() const { return ixmat.m12(); }
double im21() const { return ixmat.m21(); }
double im22() const { return ixmat.m22(); }
double idx() const { return ixmat.dx(); }
double idy() const { return ixmat.dy(); }
int txop;
bool txinv;
#else
// even without transformations we still have translations
int xlatex;
int xlatey;
#endif
void *penRef; // pen cache ref
void *brushRef; // brush cache ref
void *ps_stack;
void *wm_stack;
void killPStack();
protected:
#ifdef Q_OS_TEMP
QPoint internalCurrentPos;
uint old_pix; // ### All win platforms in 4.0
#endif
#if defined(Q_WS_WIN)
friend class QFontEngineWin;
friend class QFontEngineBox;
QT_WIN_PAINTER_MEMBERS
#elif defined(Q_WS_X11)
friend class QFontEngineXLFD;
friend class QFontEngineXft;
friend class QFontEngineBox;
Display *dpy; // current display
int scrn; // current screen
Qt::HANDLE hd; // handle to drawable
Qt::HANDLE rendhd; // handle to Xft draw
GC gc; // graphics context (standard)
GC gc_brush; // graphics contect for brush
QPoint curPt; // current point
uint clip_serial; // clipping serial number
#elif defined(Q_WS_MAC)
Qt::HANDLE hd; // handle to drawable
void initPaintDevice(bool force=FALSE, QPoint *off=NULL, QRegion *rgn=NULL);
friend const QRegion &qt_mac_update_painter(QPainter *, bool);
friend class QFontEngineMac;
friend class QMacPainter;
#elif defined(Q_WS_QWS)
friend class QFontEngine;
QGfx * gfx;
friend void qwsUpdateActivePainters();
#endif
friend class QFontMetrics;
friend class QFontInfo;
friend class QTextLayout;
friend void qt_format_text( const QFont &, const QRect &r,
int tf, const QString& str, int len, QRect *brect,
int tabstops, int* tabarray, int tabarraylen,
QTextParag **internal, QPainter* painter );
friend void qt_draw_background( QPainter *p, int x, int y, int w, int h );
friend void qt_draw_transformed_rect( QPainter *p, int x, int y, int w, int h, bool fill );
friend class QPrinter;
private: // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
QPainter( const QPainter & );
QPainter &operator=( const QPainter & );
#endif
enum TransformationCodes {
TxNone = 0, // transformation codes
TxTranslate = 1, // copy in qpainter_*.cpp
TxScale = 2,
TxRotShear = 3
};
};
/*****************************************************************************
QPainter member functions
*****************************************************************************/
inline QPaintDevice *QPainter::device() const
{
return pdev;
}
inline bool QPainter::isActive() const
{
return testf(IsActive);
}
inline const QFont &QPainter::font() const
{
return cfont;
}
inline const QPen &QPainter::pen() const
{
return cpen;
}
inline const QBrush &QPainter::brush() const
{
return cbrush;
}
/*
inline PaintUnit QPainter::unit() const
{
return (PaintUnit)pu;
}
*/
inline const QColor &QPainter::backgroundColor() const
{
return bg_col;
}
inline Qt::BGMode QPainter::backgroundMode() const
{
return (BGMode)bg_mode;
}
inline Qt::RasterOp QPainter::rasterOp() const
{
return (RasterOp)rop;
}
inline const QPoint &QPainter::brushOrigin() const
{
return bro;
}
inline bool QPainter::hasViewXForm() const
{
#ifndef QT_NO_TRANSFORMATIONS
return testf(VxF);
#else
return xlatex || xlatey;
#endif
}
inline bool QPainter::hasWorldXForm() const
{
#ifndef QT_NO_TRANSFORMATIONS
return testf(WxF);
#else
return xlatex || xlatey;
#endif
}
inline double QPainter::translationX() const
{
#ifndef QT_NO_TRANSFORMATIONS
return worldMatrix().dx();
#else
return xlatex;
#endif
}
inline double QPainter::translationY() const
{
#ifndef QT_NO_TRANSFORMATIONS
return worldMatrix().dy();
#else
return xlatey;
#endif
}
inline bool QPainter::hasClipping() const
{
return testf(ClipOn);
}
inline int QPainter::tabStops() const
{
return tabstops;
}
inline int *QPainter::tabArray() const
{
return tabarray;
}
#if defined(Q_WS_WIN)
inline HDC QPainter::handle() const
{
return hdc;
}
#elif defined(Q_WS_X11) || defined(Q_WS_MAC)
inline Qt::HANDLE QPainter::handle() const
{
return hd;
}
#endif
inline void QPainter::setBrushOrigin( const QPoint &p )
{
setBrushOrigin( p.x(), p.y() );
}
#ifndef QT_NO_TRANSFORMATIONS
inline void QPainter::setWindow( const QRect &r )
{
setWindow( r.x(), r.y(), r.width(), r.height() );
}
inline void QPainter::setViewport( const QRect &r )
{
setViewport( r.x(), r.y(), r.width(), r.height() );
}
#endif
inline void QPainter::setClipRect( int x, int y, int w, int h, CoordinateMode m )
{
setClipRect( QRect(x,y,w,h), m );
}
inline void QPainter::drawPoint( const QPoint &p )
{
drawPoint( p.x(), p.y() );
}
inline void QPainter::moveTo( const QPoint &p )
{
moveTo( p.x(), p.y() );
}
inline void QPainter::lineTo( const QPoint &p )
{
lineTo( p.x(), p.y() );
}
inline void QPainter::drawLine( const QPoint &p1, const QPoint &p2 )
{
drawLine( p1.x(), p1.y(), p2.x(), p2.y() );
}
inline void QPainter::drawRect( const QRect &r )
{
drawRect( r.x(), r.y(), r.width(), r.height() );
}
inline void QPainter::drawWinFocusRect( const QRect &r )
{
drawWinFocusRect( r.x(), r.y(), r.width(), r.height() );
}
inline void QPainter::drawWinFocusRect( const QRect &r,const QColor &penColor )
{
drawWinFocusRect( r.x(), r.y(), r.width(), r.height(), penColor );
}
inline void QPainter::drawRoundRect( const QRect &r, int xRnd, int yRnd )
{
drawRoundRect( r.x(), r.y(), r.width(), r.height(), xRnd, yRnd );
}
inline void QPainter::drawEllipse( const QRect &r )
{
drawEllipse( r.x(), r.y(), r.width(), r.height() );
}
inline void QPainter::drawArc( const QRect &r, int a, int alen )
{
drawArc( r.x(), r.y(), r.width(), r.height(), a, alen );
}
inline void QPainter::drawPie( const QRect &r, int a, int alen )
{
drawPie( r.x(), r.y(), r.width(), r.height(), a, alen );
}
inline void QPainter::drawChord( const QRect &r, int a, int alen )
{
drawChord( r.x(), r.y(), r.width(), r.height(), a, alen );
}
inline void QPainter::drawPixmap( const QPoint &p, const QPixmap &pm,
const QRect &sr )
{
drawPixmap( p.x(), p.y(), pm, sr.x(), sr.y(), sr.width(), sr.height() );
}
inline void QPainter::drawImage( const QPoint &p, const QImage &pm,
const QRect &sr, int conversionFlags )
{
drawImage( p.x(), p.y(), pm,
sr.x(), sr.y(), sr.width(), sr.height(), conversionFlags );
}
inline void QPainter::drawTiledPixmap( const QRect &r, const QPixmap &pm,
const QPoint &sp )
{
drawTiledPixmap( r.x(), r.y(), r.width(), r.height(), pm, sp.x(), sp.y() );
}
inline void QPainter::drawTiledPixmap( const QRect &r, const QPixmap &pm )
{
drawTiledPixmap( r.x(), r.y(), r.width(), r.height(), pm, 0, 0 );
}
inline void QPainter::fillRect( const QRect &r, const QBrush &brush )
{
fillRect( r.x(), r.y(), r.width(), r.height(), brush );
}
inline void QPainter::eraseRect( int x, int y, int w, int h )
{
fillRect( x, y, w, h, backgroundColor() );
}
inline void QPainter::eraseRect( const QRect &r )
{
fillRect( r.x(), r.y(), r.width(), r.height(), backgroundColor() );
}
inline void QPainter::drawText( const QPoint &p, const QString &s, int len, TextDirection dir )
{
drawText( p.x(), p.y(), s, 0, len, dir );
}
inline void QPainter::drawText( const QPoint &p, const QString &s, int pos, int len, TextDirection dir )
{
drawText( p.x(), p.y(), s, pos, len, dir );
}
inline void QPainter::drawText( int x, int y, int w, int h, int tf,
const QString& str, int len, QRect *br, QTextParag **i )
{
QRect r(x, y, w, h);
drawText( r, tf, str, len, br, i );
}
inline void QPainter::drawTextItem( const QPoint& p, const QTextItem &ti, int textflags )
{
drawTextItem( p.x(), p.y(), ti, textflags );
}
inline QRect QPainter::boundingRect( int x, int y, int w, int h, int tf,
const QString& str, int len, QTextParag **i )
{
QRect r(x, y, w, h);
return boundingRect( r, tf, str, len, i );
}
#if defined(Q_WS_QWS)
inline QGfx * QPainter::internalGfx()
{
return gfx;
}
#endif
#endif // QPAINTER_H
</pre>
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