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/****************************************************************************
** $Id: qt/qpaintdevice.h 3.0.5 edited Apr 23 23:32 $
**
** Definition of QPaintDevice class
**
** Created : 940721
**
** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** 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
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QPAINTDEVICE_H
#define QPAINTDEVICE_H
#ifndef QT_H
#include "qwindowdefs.h"
#include "qrect.h"
#endif // QT_H
#if defined(Q_WS_QWS)
class QWSDisplay;
class QGfx;
#endif
class QIODevice;
class QString;
#if defined(Q_WS_X11)
struct QPaintDeviceX11Data;
#endif
union QPDevCmdParam {
int ival;
int *ivec;
QString *str;
const QPoint *point;
const QRect *rect;
const QPointArray *ptarr;
const QPixmap *pixmap;
const QImage *image;
const QColor *color;
const QFont *font;
const QPen *pen;
const QBrush *brush;
const QRegion *rgn;
const QWMatrix *matrix;
QIODevice *device;
};
class Q_EXPORT QPaintDevice // device for QPainter
{
public:
virtual ~QPaintDevice();
int devType() const;
bool isExtDev() const;
bool paintingActive() const;
virtual void setResolution( int );
virtual int resolution() const;
// Windows: get device context
// X-Windows: get drawable
#if defined(Q_WS_WIN)
virtual HDC handle() const;
#elif defined(Q_WS_X11)
virtual Qt::HANDLE handle() const;
virtual Qt::HANDLE x11RenderHandle() const;
#elif defined(Q_WS_MAC)
virtual Qt::HANDLE handle() const;
#elif defined(Q_WS_QWS)
virtual Qt::HANDLE handle() const;
#endif
#if defined(Q_WS_X11)
Display *x11Display() const;
int x11Screen() const;
int x11Depth() const;
int x11Cells() const;
Qt::HANDLE x11Colormap() const;
bool x11DefaultColormap() const;
void *x11Visual() const;
bool x11DefaultVisual() const;
static Display *x11AppDisplay();
static int x11AppScreen();
static int x11AppDepth();
static int x11AppCells();
static int x11AppDpiX();
static int x11AppDpiY();
static Qt::HANDLE x11AppColormap();
static bool x11AppDefaultColormap();
static void *x11AppVisual();
static bool x11AppDefaultVisual();
static void x11SetAppDpiX(int);
static void x11SetAppDpiY(int);
#endif
#if defined(Q_WS_QWS)
static QWSDisplay *qwsDisplay();
virtual unsigned char * scanLine(int) const;
virtual int bytesPerLine() const;
virtual QGfx * graphicsContext(bool clip_children=TRUE) const;
#endif
enum PDevCmd {
PdcNOP = 0, // <void>
PdcDrawPoint = 1, // point
PdcDrawFirst = PdcDrawPoint,
PdcMoveTo = 2, // point
PdcLineTo = 3, // point
PdcDrawLine = 4, // point,point
PdcDrawRect = 5, // rect
PdcDrawRoundRect = 6, // rect,ival,ival
PdcDrawEllipse = 7, // rect
PdcDrawArc = 8, // rect,ival,ival
PdcDrawPie = 9, // rect,ival,ival
PdcDrawChord = 10, // rect,ival,ival
PdcDrawLineSegments = 11, // ptarr
PdcDrawPolyline = 12, // ptarr
PdcDrawPolygon = 13, // ptarr,ival
PdcDrawCubicBezier = 14, // ptarr
PdcDrawText = 15, // point,str
PdcDrawTextFormatted = 16, // rect,ival,str
PdcDrawPixmap = 17, // rect,pixmap
PdcDrawImage = 18, // rect,image
PdcDrawText2 = 19, // point,str
PdcDrawText2Formatted = 20, // rect,ival,str
PdcDrawLast = PdcDrawText2Formatted,
// no painting commands below PdcDrawLast.
PdcBegin = 30, // <void>
PdcEnd = 31, // <void>
PdcSave = 32, // <void>
PdcRestore = 33, // <void>
PdcSetdev = 34, // device - PRIVATE
PdcSetBkColor = 40, // color
PdcSetBkMode = 41, // ival
PdcSetROP = 42, // ival
PdcSetBrushOrigin = 43, // point
PdcSetFont = 45, // font
PdcSetPen = 46, // pen
PdcSetBrush = 47, // brush
PdcSetTabStops = 48, // ival
PdcSetTabArray = 49, // ival,ivec
PdcSetUnit = 50, // ival
PdcSetVXform = 51, // ival
PdcSetWindow = 52, // rect
PdcSetViewport = 53, // rect
PdcSetWXform = 54, // ival
PdcSetWMatrix = 55, // matrix,ival
PdcSaveWMatrix = 56,
PdcRestoreWMatrix = 57,
PdcSetClip = 60, // ival
PdcSetClipRegion = 61, // rgn
PdcReservedStart = 0, // codes 0-199 are reserved
PdcReservedStop = 199 // for Qt
};
protected:
QPaintDevice( uint devflags );
#if defined(Q_WS_WIN)
HDC hdc; // device context
#elif defined(Q_WS_X11)
Qt::HANDLE hd; // handle to drawable
Qt::HANDLE rendhd; // handle to RENDER pict
void copyX11Data( const QPaintDevice * );
void cloneX11Data( const QPaintDevice * );
virtual void setX11Data( const QPaintDeviceX11Data* );
QPaintDeviceX11Data* getX11Data( bool def=FALSE ) const;
#elif defined(Q_WS_MAC)
#if !defined( QMAC_NO_QUARTZ )
CGContextRef ctx;
#endif
void * hd;
#elif defined(Q_WS_QWS)
Qt::HANDLE hd;
#endif
virtual bool cmd( int, QPainter *, QPDevCmdParam * );
virtual int metric( int ) const;
virtual int fontMet( QFont *, int, const char * = 0, int = 0 ) const;
virtual int fontInf( QFont *, int ) const;
ushort devFlags; // device flags
ushort painters; // refcount
friend class QPainter;
friend class QPaintDeviceMetrics;
#if defined(Q_WS_MAC)
#ifndef QMAC_NO_QUARTZ
virtual CGContextRef macCGContext(bool clipped=TRUE) const;
#endif
friend Q_EXPORT void unclippedScaledBitBlt( QPaintDevice *, int, int, int, int,
const QPaintDevice *, int, int, int, int, Qt::RasterOp, bool, bool );
#else
friend Q_EXPORT void bitBlt( QPaintDevice *, int, int,
const QPaintDevice *,
int, int, int, int, Qt::RasterOp, bool );
#endif
#if defined(Q_WS_X11)
friend void qt_init_internal( int *, char **, Display *, Qt::HANDLE, Qt::HANDLE );
#endif
private:
#if defined(Q_WS_X11)
static Display *x_appdisplay;
static int x_appscreen;
static int x_appdepth;
static int x_appcells;
static Qt::HANDLE x_appcolormap;
static bool x_appdefcolormap;
static void *x_appvisual;
static bool x_appdefvisual;
QPaintDeviceX11Data* x11Data;
#endif
private: // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
QPaintDevice( const QPaintDevice & );
QPaintDevice &operator=( const QPaintDevice & );
#endif
};
Q_EXPORT
void bitBlt( QPaintDevice *dst, int dx, int dy,
const QPaintDevice *src, int sx=0, int sy=0, int sw=-1, int sh=-1,
Qt::RasterOp = Qt::CopyROP, bool ignoreMask=FALSE );
Q_EXPORT
void bitBlt( QPaintDevice *dst, int dx, int dy,
const QImage *src, int sx=0, int sy=0, int sw=-1, int sh=-1,
int conversion_flags=0 );
#if defined(Q_WS_X11)
struct Q_EXPORT QPaintDeviceX11Data : public QShared {
Display* x_display;
int x_screen;
int x_depth;
int x_cells;
Qt::HANDLE x_colormap;
bool x_defcolormap;
void* x_visual;
bool x_defvisual;
};
#endif
/*****************************************************************************
Inline functions
*****************************************************************************/
inline int QPaintDevice::devType() const
{ return devFlags & QInternal::DeviceTypeMask; }
inline bool QPaintDevice::isExtDev() const
{ return (devFlags & QInternal::ExternalDevice) != 0; }
inline bool QPaintDevice::paintingActive() const
{ return painters != 0; }
#if defined(Q_WS_X11)
inline Display *QPaintDevice::x11Display() const
{ return x11Data ? x11Data->x_display : x_appdisplay; }
inline int QPaintDevice::x11Screen() const
{ return x11Data ? x11Data->x_screen : x_appscreen; }
inline int QPaintDevice::x11Depth() const
{ return x11Data ? x11Data->x_depth : x_appdepth; }
inline int QPaintDevice::x11Cells() const
{ return x11Data ? x11Data->x_cells : x_appcells; }
inline Qt::HANDLE QPaintDevice::x11Colormap() const
{ return x11Data ? x11Data->x_colormap : x_appcolormap; }
inline bool QPaintDevice::x11DefaultColormap() const
{ return x11Data ? x11Data->x_defcolormap : x_appdefcolormap; }
inline void *QPaintDevice::x11Visual() const
{ return x11Data ? x11Data->x_visual : x_appvisual; }
inline bool QPaintDevice::x11DefaultVisual() const
{ return x11Data ? x11Data->x_defvisual : x_appdefvisual; }
inline Display *QPaintDevice::x11AppDisplay()
{ return x_appdisplay; }
inline int QPaintDevice::x11AppScreen()
{ return x_appscreen; }
inline int QPaintDevice::x11AppDepth()
{ return x_appdepth; }
inline int QPaintDevice::x11AppCells()
{ return x_appcells; }
inline Qt::HANDLE QPaintDevice::x11AppColormap()
{ return x_appcolormap; }
inline bool QPaintDevice::x11AppDefaultColormap()
{ return x_appdefcolormap; }
inline void *QPaintDevice::x11AppVisual()
{ return x_appvisual; }
inline bool QPaintDevice::x11AppDefaultVisual()
{ return x_appdefvisual; }
#endif // Q_WS_X11
Q_EXPORT
inline void bitBlt( QPaintDevice *dst, const QPoint &dp,
const QPaintDevice *src, const QRect &sr =QRect(0,0,-1,-1),
Qt::RasterOp rop=Qt::CopyROP, bool ignoreMask=FALSE )
{
bitBlt( dst, dp.x(), dp.y(), src, sr.x(), sr.y(), sr.width(), sr.height(),
rop, ignoreMask );
}
#endif // QPAINTDEVICE_H
| Copyright © 2002 Trolltech | Trademarks | 译者:Cavendish | Qt 3.0.5版
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