594 lines
13 KiB
C++
594 lines
13 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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#include "qwt_null_paintdevice.h"
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#include <qpaintengine.h>
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#include <qpixmap.h>
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class QwtNullPaintDevice::PrivateData
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{
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public:
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PrivateData():
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mode( QwtNullPaintDevice::NormalMode )
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{
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}
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QwtNullPaintDevice::Mode mode;
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};
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class QwtNullPaintDevice::PaintEngine: public QPaintEngine
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{
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public:
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PaintEngine();
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virtual bool begin( QPaintDevice * );
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virtual bool end();
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virtual Type type () const;
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virtual void updateState(const QPaintEngineState &);
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virtual void drawRects(const QRect *, int );
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virtual void drawRects(const QRectF *, int );
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virtual void drawLines(const QLine *, int );
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virtual void drawLines(const QLineF *, int );
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virtual void drawEllipse(const QRectF &);
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virtual void drawEllipse(const QRect &);
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virtual void drawPath(const QPainterPath &);
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virtual void drawPoints(const QPointF *, int );
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virtual void drawPoints(const QPoint *, int );
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virtual void drawPolygon(const QPointF *, int , PolygonDrawMode );
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virtual void drawPolygon(const QPoint *, int , PolygonDrawMode );
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virtual void drawPixmap(const QRectF &,
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const QPixmap &, const QRectF &);
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virtual void drawTextItem(const QPointF &, const QTextItem &);
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virtual void drawTiledPixmap(const QRectF &,
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const QPixmap &, const QPointF &s);
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virtual void drawImage(const QRectF &,
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const QImage &, const QRectF &, Qt::ImageConversionFlags );
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private:
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QwtNullPaintDevice *nullDevice();
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};
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QwtNullPaintDevice::PaintEngine::PaintEngine():
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QPaintEngine( QPaintEngine::AllFeatures )
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{
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}
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bool QwtNullPaintDevice::PaintEngine::begin( QPaintDevice * )
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{
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setActive( true );
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return true;
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}
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bool QwtNullPaintDevice::PaintEngine::end()
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{
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setActive( false );
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return true;
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}
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QPaintEngine::Type QwtNullPaintDevice::PaintEngine::type() const
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{
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return QPaintEngine::User;
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}
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void QwtNullPaintDevice::PaintEngine::drawRects(
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const QRect *rects, int rectCount)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawRects( rects, rectCount );
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return;
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}
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device->drawRects( rects, rectCount );
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}
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void QwtNullPaintDevice::PaintEngine::drawRects(
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const QRectF *rects, int rectCount)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawRects( rects, rectCount );
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return;
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}
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device->drawRects( rects, rectCount );
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}
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void QwtNullPaintDevice::PaintEngine::drawLines(
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const QLine *lines, int lineCount)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawLines( lines, lineCount );
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return;
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}
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device->drawLines( lines, lineCount );
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}
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void QwtNullPaintDevice::PaintEngine::drawLines(
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const QLineF *lines, int lineCount)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawLines( lines, lineCount );
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return;
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}
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device->drawLines( lines, lineCount );
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}
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void QwtNullPaintDevice::PaintEngine::drawEllipse(
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const QRectF &rect)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawEllipse( rect );
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return;
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}
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device->drawEllipse( rect );
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}
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void QwtNullPaintDevice::PaintEngine::drawEllipse(
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const QRect &rect)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawEllipse( rect );
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return;
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}
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device->drawEllipse( rect );
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}
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void QwtNullPaintDevice::PaintEngine::drawPath(
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const QPainterPath &path)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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device->drawPath( path );
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}
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void QwtNullPaintDevice::PaintEngine::drawPoints(
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const QPointF *points, int pointCount)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawPoints( points, pointCount );
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return;
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}
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device->drawPoints( points, pointCount );
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}
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void QwtNullPaintDevice::PaintEngine::drawPoints(
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const QPoint *points, int pointCount)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawPoints( points, pointCount );
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return;
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}
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device->drawPoints( points, pointCount );
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}
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void QwtNullPaintDevice::PaintEngine::drawPolygon(
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const QPointF *points, int pointCount, PolygonDrawMode mode)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() == QwtNullPaintDevice::PathMode )
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{
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QPainterPath path;
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if ( pointCount > 0 )
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{
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path.moveTo( points[0] );
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for ( int i = 1; i < pointCount; i++ )
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path.lineTo( points[i] );
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if ( mode != PolylineMode )
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path.closeSubpath();
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}
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device->drawPath( path );
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return;
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}
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device->drawPolygon( points, pointCount, mode );
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}
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void QwtNullPaintDevice::PaintEngine::drawPolygon(
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const QPoint *points, int pointCount, PolygonDrawMode mode)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() == QwtNullPaintDevice::PathMode )
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{
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QPainterPath path;
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if ( pointCount > 0 )
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{
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path.moveTo( points[0] );
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for ( int i = 1; i < pointCount; i++ )
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path.lineTo( points[i] );
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if ( mode != PolylineMode )
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path.closeSubpath();
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}
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device->drawPath( path );
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return;
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}
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device->drawPolygon( points, pointCount, mode );
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}
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void QwtNullPaintDevice::PaintEngine::drawPixmap(
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const QRectF &rect, const QPixmap &pm, const QRectF &subRect )
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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device->drawPixmap( rect, pm, subRect );
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}
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void QwtNullPaintDevice::PaintEngine::drawTextItem(
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const QPointF &pos, const QTextItem &textItem)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawTextItem( pos, textItem );
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return;
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}
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device->drawTextItem( pos, textItem );
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}
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void QwtNullPaintDevice::PaintEngine::drawTiledPixmap(
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const QRectF &rect, const QPixmap &pixmap,
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const QPointF &subRect)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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if ( device->mode() != QwtNullPaintDevice::NormalMode )
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{
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QPaintEngine::drawTiledPixmap( rect, pixmap, subRect );
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return;
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}
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device->drawTiledPixmap( rect, pixmap, subRect );
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}
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void QwtNullPaintDevice::PaintEngine::drawImage(
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const QRectF &rect, const QImage &image,
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const QRectF &subRect, Qt::ImageConversionFlags flags)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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device->drawImage( rect, image, subRect, flags );
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}
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void QwtNullPaintDevice::PaintEngine::updateState(
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const QPaintEngineState &state)
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{
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QwtNullPaintDevice *device = nullDevice();
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if ( device == NULL )
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return;
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device->updateState( state );
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}
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inline QwtNullPaintDevice *QwtNullPaintDevice::PaintEngine::nullDevice()
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{
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if ( !isActive() )
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return NULL;
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return static_cast<QwtNullPaintDevice *>( paintDevice() );
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}
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//! Constructor
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QwtNullPaintDevice::QwtNullPaintDevice():
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d_engine( NULL )
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{
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d_data = new PrivateData;
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}
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//! Destructor
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QwtNullPaintDevice::~QwtNullPaintDevice()
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{
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delete d_engine;
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delete d_data;
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}
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/*!
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Set the render mode
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\param mode New mode
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\sa mode()
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*/
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void QwtNullPaintDevice::setMode( Mode mode )
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{
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d_data->mode = mode;
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}
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/*!
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\return Render mode
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\sa setMode()
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*/
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QwtNullPaintDevice::Mode QwtNullPaintDevice::mode() const
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{
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return d_data->mode;
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}
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//! See QPaintDevice::paintEngine()
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QPaintEngine *QwtNullPaintDevice::paintEngine() const
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{
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if ( d_engine == NULL )
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{
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QwtNullPaintDevice *that =
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const_cast< QwtNullPaintDevice * >( this );
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that->d_engine = new PaintEngine();
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}
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return d_engine;
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}
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/*!
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See QPaintDevice::metric()
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\param deviceMetric Type of metric
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\return Metric information for the given paint device metric.
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\sa sizeMetrics()
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*/
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int QwtNullPaintDevice::metric( PaintDeviceMetric deviceMetric ) const
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{
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int value;
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switch ( deviceMetric )
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{
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case PdmWidth:
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{
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value = sizeMetrics().width();
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break;
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}
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case PdmHeight:
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{
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value = sizeMetrics().height();
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break;
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}
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case PdmNumColors:
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{
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value = 0xffffffff;
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break;
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}
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case PdmDepth:
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{
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value = 32;
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break;
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}
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case PdmPhysicalDpiX:
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case PdmPhysicalDpiY:
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case PdmDpiY:
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case PdmDpiX:
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{
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value = 72;
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break;
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}
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case PdmWidthMM:
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{
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value = qRound( metric( PdmWidth ) * 25.4 / metric( PdmDpiX ) );
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break;
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}
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case PdmHeightMM:
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{
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value = qRound( metric( PdmHeight ) * 25.4 / metric( PdmDpiY ) );
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break;
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}
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default:
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value = 0;
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}
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return value;
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}
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//! See QPaintEngine::drawRects()
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void QwtNullPaintDevice::drawRects(
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const QRect *rects, int rectCount)
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{
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Q_UNUSED(rects);
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Q_UNUSED(rectCount);
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}
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//! See QPaintEngine::drawRects()
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void QwtNullPaintDevice::drawRects(
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const QRectF *rects, int rectCount)
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{
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Q_UNUSED(rects);
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Q_UNUSED(rectCount);
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}
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//! See QPaintEngine::drawLines()
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void QwtNullPaintDevice::drawLines(
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const QLine *lines, int lineCount)
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{
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Q_UNUSED(lines);
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Q_UNUSED(lineCount);
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}
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//! See QPaintEngine::drawLines()
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void QwtNullPaintDevice::drawLines(
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const QLineF *lines, int lineCount)
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{
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Q_UNUSED(lines);
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Q_UNUSED(lineCount);
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}
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//! See QPaintEngine::drawEllipse()
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void QwtNullPaintDevice::drawEllipse( const QRectF &rect )
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{
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Q_UNUSED(rect);
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}
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//! See QPaintEngine::drawEllipse()
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void QwtNullPaintDevice::drawEllipse( const QRect &rect )
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{
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Q_UNUSED(rect);
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}
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//! See QPaintEngine::drawPath()
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void QwtNullPaintDevice::drawPath( const QPainterPath &path )
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{
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Q_UNUSED(path);
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}
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//! See QPaintEngine::drawPoints()
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void QwtNullPaintDevice::drawPoints(
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const QPointF *points, int pointCount)
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{
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Q_UNUSED(points);
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Q_UNUSED(pointCount);
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}
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//! See QPaintEngine::drawPoints()
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void QwtNullPaintDevice::drawPoints(
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const QPoint *points, int pointCount)
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{
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Q_UNUSED(points);
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Q_UNUSED(pointCount);
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}
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//! See QPaintEngine::drawPolygon()
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void QwtNullPaintDevice::drawPolygon(
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const QPointF *points, int pointCount,
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QPaintEngine::PolygonDrawMode mode)
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{
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Q_UNUSED(points);
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Q_UNUSED(pointCount);
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Q_UNUSED(mode);
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}
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//! See QPaintEngine::drawPolygon()
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void QwtNullPaintDevice::drawPolygon(
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const QPoint *points, int pointCount,
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QPaintEngine::PolygonDrawMode mode)
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{
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Q_UNUSED(points);
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Q_UNUSED(pointCount);
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Q_UNUSED(mode);
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}
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//! See QPaintEngine::drawPixmap()
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void QwtNullPaintDevice::drawPixmap( const QRectF &rect,
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const QPixmap &pm, const QRectF &subRect )
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{
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Q_UNUSED(rect);
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Q_UNUSED(pm);
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Q_UNUSED(subRect);
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}
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//! See QPaintEngine::drawTextItem()
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void QwtNullPaintDevice::drawTextItem(
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const QPointF &pos, const QTextItem &textItem)
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{
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Q_UNUSED(pos);
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Q_UNUSED(textItem);
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}
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//! See QPaintEngine::drawTiledPixmap()
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void QwtNullPaintDevice::drawTiledPixmap(
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const QRectF &rect, const QPixmap &pixmap,
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const QPointF &subRect)
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{
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Q_UNUSED(rect);
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Q_UNUSED(pixmap);
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Q_UNUSED(subRect);
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}
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//! See QPaintEngine::drawImage()
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void QwtNullPaintDevice::drawImage(
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const QRectF &rect, const QImage &image,
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const QRectF &subRect, Qt::ImageConversionFlags flags)
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{
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Q_UNUSED(rect);
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Q_UNUSED(image);
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Q_UNUSED(subRect);
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Q_UNUSED(flags);
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}
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//! See QPaintEngine::updateState()
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void QwtNullPaintDevice::updateState(
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const QPaintEngineState &state )
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{
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Q_UNUSED(state);
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}
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