Mercurial > hg > easyhg
comparison panner.cpp @ 48:996b3c4037ef
* Add IndirectPainting opt flag, makes a big difference to rendering Panner; rename project
author | Chris Cannam |
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date | Wed, 10 Nov 2010 22:07:03 +0000 |
parents | bd3accba9b3f |
children | 3c46b2ac45d3 |
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47:24efab584ee5 | 48:996b3c4037ef |
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35 m_clicked(false) | 35 m_clicked(false) |
36 { | 36 { |
37 // setViewport(new QGLWidget()); | 37 // setViewport(new QGLWidget()); |
38 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); | 38 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); |
39 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); | 39 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); |
40 setOptimizationFlags(QGraphicsView::DontSavePainterState); | 40 setOptimizationFlags(QGraphicsView::DontSavePainterState | |
41 QGraphicsView::IndirectPainting); | |
41 setMouseTracking(true); | 42 setMouseTracking(true); |
42 setInteractive(false); | 43 setInteractive(false); |
43 } | 44 } |
44 | 45 |
45 void | 46 void |
129 Panner::drawItems(QPainter *painter, int numItems, | 130 Panner::drawItems(QPainter *painter, int numItems, |
130 QGraphicsItem *items[], | 131 QGraphicsItem *items[], |
131 const QStyleOptionGraphicsItem options[]) | 132 const QStyleOptionGraphicsItem options[]) |
132 { | 133 { |
133 if (m_cache.size() != viewport()->size()) { | 134 if (m_cache.size() != viewport()->size()) { |
135 | |
136 std::cerr << "Panner: recreating cache" << std::endl; | |
134 | 137 |
135 QGraphicsScene *s = scene(); | 138 QGraphicsScene *s = scene(); |
136 if (!s) return; | 139 if (!s) return; |
137 PannerScene *ps = static_cast<PannerScene *>(s); | 140 PannerScene *ps = static_cast<PannerScene *>(s); |
138 | 141 |