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Profile: attempt on better zoom and pan logic
QGraphicsView::AnchorUnderMouse does not work for Qt 4.8.1 on Ubuntu 12.04 and if the mouseMoveEvent overload is disabled it practically can be seen that the anchor point is [0, 0] instead of the mouse location. After a suggestion found on the web this patch attempts to use the hidden scroll bars to calculate reposition on pan and zoom *near the mouse cursor. On the other hand QAbstactSlider (QScrollBar) class strangly uses negative offsets for minimum scroll position, which makes the implementation even more ugly. [*near] because it's not that accurate! Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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@ -124,6 +124,7 @@ private:
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void plot_depth_scale();
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QColor get_sac_color(int sac, int avg_sac);
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void scrollViewTo(const QPoint pos);
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QPen defaultPen;
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QBrush defaultBrush;
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