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"
76 PaintInDeviceResolution = 1
89 void setAlpha(
int alpha );
95 void invalidateCache();
97 virtual void draw( QPainter *p,
99 const QRectF &rect )
const;
101 virtual QRectF pixelHint(
const QRectF & )
const;
121 virtual QImage renderImage(
const QwtScaleMap &xMap,
123 const QSize &imageSize )
const = 0;
127 const QSize &imageSize,
double pixelSize)
const;
136 const QRectF &imageArea,
const QRectF &paintRect,
137 const QSize &imageSize,
bool doCache)
const;