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111 lines
4.3 KiB
Plaintext
111 lines
4.3 KiB
Plaintext
class QgsMapToolIdentify : QgsMapTool
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{
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%TypeHeaderCode
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#include <qgsmaptoolidentify.h>
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%End
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public:
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enum IdentifyMode
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{
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DefaultQgsSetting,
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ActiveLayer,
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TopDownStopAtFirst,
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TopDownAll,
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LayerSelection
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};
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enum Type
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{
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VectorLayer,
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RasterLayer,
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AllLayers
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};
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typedef QFlags<QgsMapToolIdentify::Type> LayerType;
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struct IdentifyResult
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{
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IdentifyResult();
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IdentifyResult( QgsMapLayer * layer, QgsFeature feature, QMap< QString, QString > derivedAttributes );
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IdentifyResult( QgsMapLayer * layer, QString label, QMap< QString, QString > attributes, QMap< QString, QString > derivedAttributes );
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IdentifyResult( QgsMapLayer * layer, QString label, QgsFields fields, QgsFeature feature, QMap< QString, QString > derivedAttributes );
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QgsMapLayer* mLayer;
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QString mLabel;
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QgsFields mFields;
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QgsFeature mFeature;
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QMap< QString, QString > mAttributes;
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QMap< QString, QString > mDerivedAttributes;
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QMap< QString, QVariant > mParams;
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};
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//! constructor
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QgsMapToolIdentify( QgsMapCanvas * canvas );
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virtual ~QgsMapToolIdentify();
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//! Overridden mouse move event
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virtual void canvasMoveEvent( QMouseEvent * e );
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//! Overridden mouse press event
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virtual void canvasPressEvent( QMouseEvent * e );
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//! Overridden mouse release event
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virtual void canvasReleaseEvent( QMouseEvent * e );
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virtual void activate();
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virtual void deactivate();
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/** Performs the identification.
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@param x x coordinates of mouseEvent
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@param y y coordinates of mouseEvent
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@param layerList Performs the identification within the given list of layers. Default value is an empty list, i.e. uses all the layers.
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@param mode Identification mode. Can use Qgis default settings or a defined mode. Default mode is DefaultQgsSetting.
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@return a list of IdentifyResult*/
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QList<QgsMapToolIdentify::IdentifyResult> identify( int x, int y, QList<QgsMapLayer*> layerList = QList<QgsMapLayer*>(), IdentifyMode mode = DefaultQgsSetting );
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/** Performs the identification.
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To avoid beeing forced to specify IdentifyMode with a list of layers
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this has been made private and two publics methods are offered
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@param x x coordinates of mouseEvent
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@param y y coordinates of mouseEvent
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@param mode Identification mode. Can use Qgis default settings or a defined mode.
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@param layerType Only performs identification in a certain type of layers (raster, vector). Default value is AllLayers.
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@return a list of IdentifyResult*/
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QList<QgsMapToolIdentify::IdentifyResult> identify( int x, int y, IdentifyMode mode, LayerType layerType = AllLayers );
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public slots:
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void formatChanged( QgsRasterLayer *layer );
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void layerDestroyed();
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signals:
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void identifyProgress( int, int );
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void identifyMessage( QString );
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void changedRasterResults( QList<QgsMapToolIdentify::IdentifyResult>& );
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protected:
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//! rubber bands for layer select mode
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void deleteRubberBands();
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/** Performs the identification.
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To avoid beeing forced to specify IdentifyMode with a list of layers
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this has been made private and two publics methods are offered
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@param x x coordinates of mouseEvent
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@param y y coordinates of mouseEvent
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@param mode Identification mode. Can use Qgis default settings or a defined mode.
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@param layerList Performs the identification within the given list of layers.
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@param layerType Only performs identification in a certain type of layers (raster, vector).
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@return true if identification succeeded and a feature has been found, false otherwise.*/
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QList<QgsMapToolIdentify::IdentifyResult> identify( int x, int y, IdentifyMode mode, QList<QgsMapLayer*> layerList, LayerType layerType = AllLayers );
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/** call the right method depending on layer type */
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bool identifyLayer( QList<QgsMapToolIdentify::IdentifyResult> *results, QgsMapLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, LayerType layerType = AllLayers );
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bool identifyRasterLayer( QList<QgsMapToolIdentify::IdentifyResult> *results, QgsRasterLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel );
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bool identifyVectorLayer( QList<QgsMapToolIdentify::IdentifyResult> *results, QgsVectorLayer *layer, QgsPoint point );
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};
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