update QgsDiagramRendererV2 sip bindings

qgis · Sep 21, 2012 · 3e08931 · 3e08931
1 parent f24862a
commit 3e08931
Show file tree

Hide file tree

Showing 2 changed files with 242 additions and 168 deletions.
diff --git a/python/core/qgsdiagramrendererv2.sip b/python/core/qgsdiagramrendererv2.sip
@@ -3,70 +3,108 @@ struct QgsDiagramLayerSettings
 %TypeHeaderCode
 #include <qgsdiagramrendererv2.h>
 %End
+    //avoid inclusion of QgsPalLabeling
+    enum Placement
+    {
+      AroundPoint, // Point / Polygon
+      OverPoint, // Point / Polygon
+      Line, // Line / Polygon
+      Curved, // Line
+      Horizontal, // Polygon
+      Free // Polygon
+    };
+
+    enum LinePlacementFlags
+    {
+      OnLine    = 1,
+      AboveLine = 2,
+      BelowLine = 4,
+      MapOrientation = 8
+    };
+
+    QgsDiagramLayerSettings();
+
+    //pal placement properties
+    Placement placement;
+    LinePlacementFlags placementFlags;
+    int priority; // 0 = low, 10 = high
+    bool obstacle; // whether it's an obstacle
+    double dist; // distance from the feature (in mm)
+    QgsDiagramRendererV2* renderer;
+    int xPosColumn; //attribute index for x coordinate (or -1 if position not data defined)
+    int yPosColumn;//attribute index for y coordinate (or -1 if position not data defined)
 
-  //avoid inclusion of QgsPalLabeling
-  enum Placement
-  {
-    AroundPoint, // Point / Polygon
-    OverPoint, // Point / Polygon
-    Line, // Line / Polygon
-    Curved, // Line
-    Horizontal, // Polygon
-    Free // Polygon
-  };
-
-  enum LinePlacementFlags
-  {
-    OnLine    = 1,
-    AboveLine = 2,
-    BelowLine = 4,
-    MapOrientation = 8
-  };
-
-  QgsDiagramLayerSettings();
-
-  //pal placement properties
-  Placement placement;
-  LinePlacementFlags placementFlags;
-  int priority; // 0 = low, 10 = high
-  bool obstacle; // whether it's an obstacle
-  double dist; // distance from the feature (in mm)
-  QgsDiagramRendererV2* renderer;
-  int xPosColumn; //attribute index for x coordinate (or -1 if position not data defined)
-  int yPosColumn;//attribute index for y coordinate (or -1 if position not data defined)
-
-  void readXML( const QDomElement& elem );
-  void writeXML( QDomElement& layerElem, QDomDocument& doc ) const;
+    void readXML( const QDomElement& elem );
+    void writeXML( QDomElement& layerElem, QDomDocument& doc ) const;
 };
 
 //diagram settings for rendering
-struct QgsDiagramSettings
+class QgsDiagramSettings
+{
+%TypeHeaderCode
+#include <qgsdiagramrendererv2.h>
+%End
+  public:
+    enum SizeType
+    {
+      MM,
+      MapUnits
+    };
+
+    enum LabelPlacementMethod
+    {
+      Height,
+      XHeight
+    };
+
+    //! Orientation of histogram
+    enum DiagramOrientation
+    {
+      Up,
+      Down,
+      Left,
+      Right
+    };
+
+    QgsDiagramSettings();
+    QFont font;
+    QList< QColor > categoryColors;
+    QList< int > categoryIndices;
+    QSizeF size; //size
+    SizeType sizeType; //mm or map units
+    QColor backgroundColor;
+    QColor penColor;
+    double penWidth;
+    LabelPlacementMethod labelPlacementMethod;
+    DiagramOrientation diagramOrientation;
+    double barWidth;
+    int transparency; // 0 - 100
+    bool scaleByArea;
+
+    //scale range (-1 if no lower / upper bound )
+    double minScaleDenominator;
+    double maxScaleDenominator;
+
+    //! Scale diagrams smaller than mMinimumSize to mMinimumSize
+    double minimumSize;
+
+    void readXML( const QDomElement& elem );
+    void writeXML( QDomElement& rendererElem, QDomDocument& doc ) const;
+};
+
+//additional diagram settings for interpolated size rendering
+class QgsDiagramInterpolationSettings
 {
 %TypeHeaderCode
 #include <qgsdiagramrendererv2.h>
 %End
-  enum SizeType
-  {
-    MM,
-    MapUnits
-  };
-
-  QgsDiagramSettings();
-  QFont font;
-  QList< QColor > categoryColors;
-  QList< int > categoryIndices;
-  QSizeF size; //size
-  SizeType sizeType; //mm or map units
-  QColor backgroundColor;
-  QColor penColor;
-  double penWidth;
-
-  //scale range (-1 if no lower / upper bound )
-  double minScaleDenominator;
-  double maxScaleDenominator;
-
-  void readXML( const QDomElement& elem );
-  void writeXML( QDomElement& rendererElem, QDomDocument& doc ) const;
+  public:
+    QSizeF lowerSize;
+    QSizeF upperSize;
+    double lowerValue;
+    double upperValue;
+    /**Index of the classification attribute*/
+    int classificationAttribute;
 };
 
 /**Returns diagram settings for a feature*/
@@ -98,10 +136,36 @@ class QgsDiagramRendererV2
 
     virtual void readXML( const QDomElement& elem ) = 0;
     virtual void writeXML( QDomElement& layerElem, QDomDocument& doc ) const = 0;
+
+
+  protected:
+
+    /**Returns diagram settings for a feature (or false if the diagram for the feature is not to be rendered). Used internally within renderDiagram()
+     * @param att attribute map
+     * @param c render context
+     * @param s out: diagram settings for the feature
+     */
+    virtual bool diagramSettings( const QgsAttributeMap& att, const QgsRenderContext& c, QgsDiagramSettings& s ) = 0;
+
+    /**Returns size of the diagram (in painter units) or an invalid size in case of error*/
+    virtual QSizeF diagramSize( const QgsAttributeMap& attributes, const QgsRenderContext& c ) = 0;
+
+    /**Converts size from mm to map units*/
+    void convertSizeToMapUnits( QSizeF& size, const QgsRenderContext& context ) const;
+
+    /**Returns the paint device dpi (or -1 in case of error*/
+    static int dpiPaintDevice( const QPainter* );
+
+    //read / write diagram
+    void _readXML( const QDomElement& elem );
+    void _writeXML( QDomElement& rendererElem, QDomDocument& doc ) const;
+
+    /**Reference to the object that does the real diagram rendering*/
+    QgsDiagram* mDiagram;
 };
 
 /**Renders the diagrams for all features with the same settings*/
-class QgsSingleCategoryDiagramRenderer: QgsDiagramRendererV2
+class QgsSingleCategoryDiagramRenderer : QgsDiagramRendererV2
 {
 %TypeHeaderCode
 #include <qgsdiagramrendererv2.h>
@@ -120,9 +184,14 @@ class QgsSingleCategoryDiagramRenderer: QgsDiagramRendererV2
 
     void readXML( const QDomElement& elem );
     void writeXML( QDomElement& layerElem, QDomDocument& doc ) const;
+
+  protected:
+    bool diagramSettings( const QgsAttributeMap&, const QgsRenderContext& c, QgsDiagramSettings& s );
+
+    QSizeF diagramSize( const QgsAttributeMap& attributes, const QgsRenderContext& c );
 };
 
-class QgsLinearlyInterpolatedDiagramRenderer: QgsDiagramRendererV2
+class QgsLinearlyInterpolatedDiagramRenderer : QgsDiagramRendererV2
 {
 %TypeHeaderCode
 #include <qgsdiagramrendererv2.h>
@@ -157,4 +226,9 @@ class QgsLinearlyInterpolatedDiagramRenderer: QgsDiagramRendererV2
 
     void readXML( const QDomElement& elem );
     void writeXML( QDomElement& layerElem, QDomDocument& doc ) const;
+
+  protected:
+    bool diagramSettings( const QgsAttributeMap&, const QgsRenderContext& c, QgsDiagramSettings& s );
+
+    QSizeF diagramSize( const QgsAttributeMap& attributes, const QgsRenderContext& c );
 };