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