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127 lines
4.9 KiB
Plaintext
127 lines
4.9 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, const QgsFeature& feature, const QMap< QString, QString >& derivedAttributes );
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IdentifyResult( QgsMapLayer * layer, const QString& label, const QMap< QString, QString >& attributes, const QMap< QString, QString >& derivedAttributes );
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IdentifyResult( QgsMapLayer * layer, const QString& label, const QgsFields& fields, const QgsFeature& feature, const 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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virtual Flags flags() const;
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//! Overridden mouse move event
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virtual void canvasMoveEvent( QgsMapMouseEvent * e );
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//! Overridden mouse press event
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virtual void canvasPressEvent( QgsMapMouseEvent * e );
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//! Overridden mouse release event
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virtual void canvasReleaseEvent( QgsMapMouseEvent * 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, const QList<QgsMapLayer*>& layerList = QList<QgsMapLayer*>(), IdentifyMode mode = DefaultQgsSetting );
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/** Performs the identification.
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To avoid being 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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//! return a pointer to the identify menu which will be used in layer selection mode
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//! this menu can also be customized
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QgsIdentifyMenu* identifyMenu();
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public slots:
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void formatChanged( QgsRasterLayer *layer );
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signals:
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void identifyProgress( int, int );
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void identifyMessage( const QString& );
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void changedRasterResults( QList<QgsMapToolIdentify::IdentifyResult>& );
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protected:
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/** Performs the identification.
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To avoid being 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 a list of IdentifyResult*/
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QList<QgsMapToolIdentify::IdentifyResult> identify( int x, int y, IdentifyMode mode, const 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, const QgsPoint& point, const QgsRectangle& viewExtent, double mapUnitsPerPixel, LayerType layerType = AllLayers );
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bool identifyRasterLayer( QList<QgsMapToolIdentify::IdentifyResult> *results, QgsRasterLayer *layer, QgsPoint point, const QgsRectangle& viewExtent, double mapUnitsPerPixel );
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bool identifyVectorLayer( QList<QgsMapToolIdentify::IdentifyResult> *results, QgsVectorLayer *layer, const QgsPoint& point );
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private:
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/** Desired units for distance display.
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* @note added in QGIS 2.14
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* @see displayAreaUnits()
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*/
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virtual QgsUnitTypes::DistanceUnit displayDistanceUnits() const;
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/** Desired units for area display.
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* @note added in QGIS 2.14
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* @see displayDistanceUnits()
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*/
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virtual QgsUnitTypes::AreaUnit displayAreaUnits() const;
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};
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