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175 lines
3.7 KiB
C++
175 lines
3.7 KiB
C++
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#ifndef QWT_PAINTER_COMMAND_H
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#define QWT_PAINTER_COMMAND_H
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#include "qwt_global.h"
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#include <qpaintengine.h>
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#include <qpixmap.h>
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#include <qimage.h>
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#include <qpolygon.h>
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#include <qpainterpath.h>
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class QPainterPath;
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/*!
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QwtPainterCommand represents the attributes of a paint operation
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how it is used between QPainter and QPaintDevice
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It is used by QwtGraphic to record and replay paint operations
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\sa QwtGraphic::commands()
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*/
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class QWT_EXPORT QwtPainterCommand
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{
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public:
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//! Type of the paint command
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enum Type
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{
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//! Invalid command
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Invalid = -1,
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//! Draw a QPainterPath
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Path,
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//! Draw a QPixmap
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Pixmap,
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//! Draw a QImage
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Image,
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//! QPainter state change
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State
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};
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//! Attributes how to paint a QPixmap
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struct PixmapData
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{
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QRectF rect;
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QPixmap pixmap;
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QRectF subRect;
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};
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//! Attributes how to paint a QImage
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struct ImageData
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{
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QRectF rect;
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QImage image;
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QRectF subRect;
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Qt::ImageConversionFlags flags;
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};
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//! Attributes of a state change
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struct StateData
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{
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QPaintEngine::DirtyFlags flags;
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QPen pen;
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QBrush brush;
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QPointF brushOrigin;
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QBrush backgroundBrush;
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Qt::BGMode backgroundMode;
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QFont font;
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QMatrix matrix;
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QTransform transform;
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Qt::ClipOperation clipOperation;
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QRegion clipRegion;
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QPainterPath clipPath;
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bool isClipEnabled;
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QPainter::RenderHints renderHints;
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QPainter::CompositionMode compositionMode;
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qreal opacity;
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};
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QwtPainterCommand();
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QwtPainterCommand(const QwtPainterCommand &);
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QwtPainterCommand( const QPainterPath & );
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QwtPainterCommand( const QRectF &rect,
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const QPixmap &, const QRectF& subRect );
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QwtPainterCommand( const QRectF &rect,
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const QImage &, const QRectF& subRect,
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Qt::ImageConversionFlags );
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QwtPainterCommand( const QPaintEngineState & );
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~QwtPainterCommand();
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QwtPainterCommand &operator=(const QwtPainterCommand & );
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Type type() const;
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QPainterPath *path();
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const QPainterPath *path() const;
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PixmapData* pixmapData();
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const PixmapData* pixmapData() const;
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ImageData* imageData();
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const ImageData* imageData() const;
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StateData* stateData();
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const StateData* stateData() const;
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private:
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void copy( const QwtPainterCommand & );
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void reset();
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Type d_type;
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union
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{
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QPainterPath *d_path;
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PixmapData *d_pixmapData;
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ImageData *d_imageData;
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StateData *d_stateData;
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};
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};
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//! \return Type of the command
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inline QwtPainterCommand::Type QwtPainterCommand::type() const
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{
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return d_type;
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}
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//! \return Painter path to be painted
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inline const QPainterPath *QwtPainterCommand::path() const
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{
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return d_path;
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}
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//! \return Attributes how to paint a QPixmap
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inline const QwtPainterCommand::PixmapData *
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QwtPainterCommand::pixmapData() const
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{
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return d_pixmapData;
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}
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//! \return Attributes how to paint a QImage
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inline const QwtPainterCommand::ImageData *
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QwtPainterCommand::imageData() const
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{
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return d_imageData;
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}
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//! \return Attributes of a state change
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inline const QwtPainterCommand::StateData *
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QwtPainterCommand::stateData() const
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{
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return d_stateData;
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}
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#endif
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