qwt_null_paintdevice.h
/* -*- 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_NULL_PAINT_DEVICE_H
#define QWT_NULL_PAINT_DEVICE_H 1
#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;
virtual int metric( PaintDeviceMetric ) const;
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 *d_engine;
class PrivateData;
PrivateData *d_data;
};
#endif
QwtNullPaintDevice::PolygonPathMode
@ PolygonPathMode
Definition: qwt_null_paintdevice.h:57
QwtNullPaintDevice::sizeMetrics
virtual QSize sizeMetrics() const =0
QwtNullPaintDevice::NormalMode
@ NormalMode
Definition: qwt_null_paintdevice.h:45
QwtNullPaintDevice::Mode
Mode
Render mode.
Definition: qwt_null_paintdevice.h:40
QwtNullPaintDevice
A null paint device doing nothing.
Definition: qwt_null_paintdevice.h:32