mirror of https://github.com/CGAL/cgal
40 lines
831 B
C++
40 lines
831 B
C++
namespace CGAL {
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namespace Qt {
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/*!
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\ingroup PkgGraphicsViewMiscClasses
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An object of type `GraphicsViewNavigation` can be added as event filter to a `Qt::QGraphicsView` and its viewport.
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Dragging the left mouse button while holding the 'Ctrl' key defines a zoom rectangle.
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Dragging the right mouse button while holding the 'Ctrl' key translates the scene.
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'Ctrl-Shift' and a click of the right mouse button translates what is under the mouse to the center.
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*/
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class GraphicsViewNavigation {
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public:
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/// \name Operations
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/// @{
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/*!
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The event filter.
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*/
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bool eventFilter(QObject *obj, QEvent *event);
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/// @}
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/// \name Signals
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/// @{
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/*!
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Emits the real world mouse coordinates.
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*/
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void mouseCoordinates(QPointF p);
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/// @}
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}; /* end GraphicsViewNavigation */
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} /* end namespace Qt */
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} /* end namespace CGAL */
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