QwtNullPaintDevice(3) | Qwt User's Guide | QwtNullPaintDevice(3) |
NAME¶
QwtNullPaintDevice - A null paint device doing nothing.SYNOPSIS¶
#include <qwt_null_paintdevice.h> Inherited by QwtStyleSheetRecorder.Public Member Functions¶
QwtNullPaintDevice (QPaintEngine::PaintEngineFeatures)
Detailed Description¶
A null paint device doing nothing. Sometimes important layout/rendering geometries are not available or changable from the public Qt class interface. ( f.e hidden in the style implementation ). QwtNullPaintDevice can be used to manipulate or filter out these informations by analyzing the stream of paint primitives. F.e. QwtNullPaintDevice is used by QwtPlotCanvas to identify styled backgrounds with rounded corners.Constructor & Destructor Documentation¶
QwtNullPaintDevice::QwtNullPaintDevice (QPaintEngine::PaintEngineFeaturesfeatures)¶
Constructor.QwtNullPaintDevice::QwtNullPaintDevice (const QSize &size, QPaintEngine::PaintEngineFeaturesfeatures)¶
Constructor.QwtNullPaintDevice::~QwtNullPaintDevice () [virtual]¶
Destructor.Member Function Documentation¶
void QwtNullPaintDevice::drawEllipse (const QRectF &rect) [virtual]¶
See QPaintEngine::drawEllipse()void QwtNullPaintDevice::drawEllipse (const QRect &rect) [virtual]¶
See QPaintEngine::drawEllipse()void QwtNullPaintDevice::drawImage (const QRectF &rect, const QImage &image, const QRectF &subRect, Qt::ImageConversionFlagsflags) [virtual]¶
See QPaintEngine::drawImage()void QwtNullPaintDevice::drawLines (const QLineF *lines, intlineCount) [virtual]¶
See QPaintEngine::drawLines()void QwtNullPaintDevice::drawLines (const QLine *lines, intlineCount) [virtual]¶
See QPaintEngine::drawLines()void QwtNullPaintDevice::drawPath (const QPainterPath &path) [virtual]¶
See QPaintEngine::drawPath()void QwtNullPaintDevice::drawPixmap (const QRectF &rect, const QPixmap &pm, const QRectF &subRect) [virtual]¶
See QPaintEngine::drawPixmap()void QwtNullPaintDevice::drawPoints (const QPointF *points, intpointCount) [virtual]¶
See QPaintEngine::drawPoints()void QwtNullPaintDevice::drawPoints (const QPoint *points, intpointCount) [virtual]¶
See QPaintEngine::drawPoints()void QwtNullPaintDevice::drawPolygon (const QPoint *points, intpointCount, QPaintEngine::PolygonDrawModemode) [virtual]¶
See QPaintEngine::drawPolygon()void QwtNullPaintDevice::drawPolygon (const QPointF *points, intpointCount, QPaintEngine::PolygonDrawModemode) [virtual]¶
See QPaintEngine::drawPolygon()void QwtNullPaintDevice::drawRects (const QRectF *rects, intrectCount) [virtual]¶
See QPaintEngine::drawRects()void QwtNullPaintDevice::drawRects (const QRect *rects, intrectCount) [virtual]¶
See QPaintEngine::drawRects()void QwtNullPaintDevice::drawTextItem (const QPointF &pos, const QTextItem &textItem) [virtual]¶
See QPaintEngine::drawTextItem()void QwtNullPaintDevice::drawTiledPixmap (const QRectF &rect, const QPixmap &pixmap, const QPointF &s) [virtual]¶
See QPaintEngine::drawTiledPixmap()int QwtNullPaintDevice::metric (PaintDeviceMetricmetric) const [virtual] See QPaintDevice::metric()¶
See also:setSize()
QPaintEngine * QwtNullPaintDevice::paintEngine () const [virtual]¶
See QPaintDevice::paintEngine()void QwtNullPaintDevice::setSize (const QSize &size) Set the size of the paint device¶
Parameters:size Size
See also:
size()
QSize QwtNullPaintDevice::size () const Returns:¶
Size of the paint device
See also:
setSize()
void QwtNullPaintDevice::updateState (const QPaintEngineState &state) [virtual]¶
See QPaintEngine::updateState()Author¶
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