10 #ifndef QWT_PLOT_RASTERITEM_H
11 #define QWT_PLOT_RASTERITEM_H
13 #include "qwt_global.h"
14 #include "qwt_plot_item.h"
15 #include "qwt_interval.h"
80 PaintInDeviceResolution = 1
93 void setAlpha(
int alpha );
99 void invalidateCache();
101 virtual void draw( QPainter *p,
103 const QRectF &rect )
const;
105 virtual QRectF pixelHint(
const QRectF & )
const;
125 virtual QImage renderImage(
const QwtScaleMap &xMap,
127 const QSize &imageSize )
const = 0;
131 const QSize &imageSize,
double pixelSize)
const;
140 const QRectF &imageArea,
const QRectF &paintRect,
141 const QSize &imageSize,
bool doCache)
const;