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https://github.com/qgis/QGIS.git
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7e367f30b8
however in Python the destruction had to be done explicitly to acheive right order. New solution is that QgsMapTool is derived from QObject and on construction, QgsMapCanvas is set as its parent. This way canvas is always deleted after deletion of map tools. Also, because of this, I've divided QgsMeasure to QgsMeasureTool and QgsMeasureDialog (problem with 2 parents with QObject as a base). git-svn-id: http://svn.osgeo.org/qgis/trunk@6908 c8812cc2-4d05-0410-92ff-de0c093fc19c
77 lines
2.3 KiB
Plaintext
77 lines
2.3 KiB
Plaintext
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class QgsMapTool : QObject
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{
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%TypeHeaderCode
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#include <qgsmaptool.h>
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%End
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%ConvertToSubClassCode
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if (dynamic_cast<QgsMapToolZoom*>(sipCpp) != NULL)
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sipClass = sipClass_QgsMapToolZoom;
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else if (dynamic_cast<QgsMapToolPan*>(sipCpp) != NULL)
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sipClass = sipClass_QgsMapToolPan;
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else
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sipClass = NULL;
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%End
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public:
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//! virtual destructor
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virtual ~QgsMapTool();
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//! Mouse move event for overriding
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virtual void canvasMoveEvent(QMouseEvent * e);
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//! Mouse press event for overriding
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virtual void canvasPressEvent(QMouseEvent * e);
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//! Mouse release event for overriding
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virtual void canvasReleaseEvent(QMouseEvent * e);
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//! Called when rendering has finished
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virtual void renderComplete();
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/** Use this to associate a button, toolbutton, menu entry etc
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* that inherits qaction to this maptool. Then when the setMapTool
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* method of mapcanvas is called the action state will be set to on.
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* Usually this will cause e.g. a toolbutton to appear pressed in and
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* the previously used toolbutton to pop out. */
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void setAction(QAction* action);
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QAction* action();
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/** Check whether this MapTool performs a zoom or pan operation.
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* If it does, we will be able to perform the zoom and then
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* resume operations with the original / previously used tool.*/
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virtual bool isZoomTool();
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//! called when set as currently active map tool
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virtual void activate();
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//! called when map tool is being deactivated
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virtual void deactivate();
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protected:
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//! constructor takes map canvas as a parameter
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QgsMapTool(QgsMapCanvas* canvas /TransferThis/);
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//! transformation from screen coordinates to map coordinates
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QgsPoint toMapCoords(const QPoint& point);
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//! transformation from screen coordinates to layer's coordinates
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QgsPoint toLayerCoords(QgsMapLayer* layer, const QPoint& point);
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//! trnasformation from map coordinates to layer's coordinates
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QgsPoint toLayerCoords(QgsMapLayer* layer, const QgsPoint& point);
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//! trnasformation of the rect from map coordinates to layer's coordinates
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QgsRect toLayerCoords(QgsMapLayer* layer, const QgsRect& rect);
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//! transformation from map coordinates to screen coordinates
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QPoint toCanvasCoords(const QgsPoint& point);
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};
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