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qwt_null_paintdevice.h
/******************************************************************************
* 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_NULL_PAINT_DEVICE_H
#define QWT_NULL_PAINT_DEVICE_H
#include "qwt_global.h"
#include <qpaintdevice.h>
#include <qpaintengine.h>
class QWT_EXPORT QwtNullPaintDevice : public QPaintDevice
{
public:
enum Mode
{
NormalMode,
PolygonPathMode,
PathMode
};
QwtNullPaintDevice();
virtual ~QwtNullPaintDevice();
void setMode( Mode );
Mode mode() const;
virtual QPaintEngine* paintEngine() const QWT_OVERRIDE;
virtual int metric( PaintDeviceMetric ) const QWT_OVERRIDE;
virtual void drawRects(const QRect*, int );
virtual void drawRects(const QRectF*, int );
virtual void drawLines(const QLine*, int );
virtual void drawLines(const QLineF*, int );
virtual void drawEllipse(const QRectF&);
virtual void drawEllipse(const QRect&);
virtual void drawPath(const QPainterPath&);
virtual void drawPoints(const QPointF*, int );
virtual void drawPoints(const QPoint*, int );
virtual void drawPolygon( const QPointF*, int,
QPaintEngine::PolygonDrawMode );
virtual void drawPolygon( const QPoint*, int,
QPaintEngine::PolygonDrawMode );
virtual void drawPixmap(const QRectF&,
const QPixmap&, const QRectF&);
virtual void drawTextItem(const QPointF&, const QTextItem&);
virtual void drawTiledPixmap(const QRectF&,
const QPixmap&, const QPointF& );
virtual void drawImage(const QRectF&, const QImage&,
const QRectF&, Qt::ImageConversionFlags );
virtual void updateState( const QPaintEngineState& );
protected:
virtual QSize sizeMetrics() const = 0;
private:
class PaintEngine;
PaintEngine* m_engine;
class PrivateData;
PrivateData* m_data;
};
#endif
QwtNullPaintDevice
A null paint device doing nothing.
Definition qwt_null_paintdevice.h:33
QwtNullPaintDevice::Mode
Mode
Render mode.
Definition qwt_null_paintdevice.h:41
QwtNullPaintDevice::NormalMode
@ NormalMode
Definition qwt_null_paintdevice.h:46
QwtNullPaintDevice::PolygonPathMode
@ PolygonPathMode
Definition qwt_null_paintdevice.h:58