Make maprender able to tell us the map size and dpi (there were previ…

…ously no accessors for this)

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@8135 c8812cc2-4d05-0410-92ff-de0c093fc19c

python/core/qgsmaprender.sip

@@ -48,6 +48,11 @@ class QgsMapRender : QObject
 
     void setOutputSize(QSize size, int dpi);
 
+    //!accessor for output dpi
+    int outputDpi();
+    //!accessor for output size
+    QSize outputSize();
+
     //! transform extent in layer's SRS to extent in output SRS
     QgsRect layerExtentToOutputExtent(QgsMapLayer* theLayer, QgsRect extent);
 

python/core/qgsscalecalculator.sip

@@ -30,6 +30,12 @@ class QgsScaleCalculator
      */
     void setDpi(int dpi);
 
+    /**
+     * Accessor for dpi used in scale calculations
+     * @return int the dpi used for scale calculations.
+     */
+    int dpi();
+
     /**
      * Set the map units
      * @param mapUnits Units of the data on the map. Must match a value from the

src/core/qgsmaprender.cpp

@@ -118,6 +118,14 @@ void QgsMapRender::setOutputSize(QSize size, int dpi)
   mScaleCalculator->setDpi(dpi);
   adjustExtentToSize();
 }
+int QgsMapRender::outputDpi()
+{
+  return mScaleCalculator->dpi();
+}
+QSize QgsMapRender::outputSize()
+{
+  return mSize;
+}
 
 void QgsMapRender::adjustExtentToSize()
 {

src/core/qgsmaprender.h

@@ -79,6 +79,11 @@ class CORE_EXPORT QgsMapRender : public QObject
     void setOverview(bool isOverview = true) { mOverview = isOverview; }
 
     void setOutputSize(QSize size, int dpi);
+
+    //!accessor for output dpi
+    int outputDpi();
+    //!accessor for output size
+    QSize outputSize();
 
     //! transform extent in layer's SRS to extent in output SRS
     QgsRect layerExtentToOutputExtent(QgsMapLayer* theLayer, QgsRect extent);

src/core/qgsscalecalculator.cpp

@@ -35,6 +35,10 @@ void QgsScaleCalculator::setDpi(int dpi)
 {
   mDpi = dpi;
 }
+int QgsScaleCalculator::dpi()
+{
+  return mDpi;
+}
 
 void QgsScaleCalculator::setMapUnits(QGis::units mapUnits)
 {

src/core/qgsscalecalculator.h

@@ -51,6 +51,11 @@ class CORE_EXPORT QgsScaleCalculator
      * @param dpi Dots per inch of monitor resolution
      */
     void setDpi(int dpi);
+    /**
+     * Accessor for dpi used in scale calculations
+     * @return int the dpi used for scale calculations.
+     */
+    int dpi();
 
     /**
      * Set the map units
@@ -70,7 +75,7 @@ class CORE_EXPORT QgsScaleCalculator
     double calculate(QgsRect &mapExtent, int canvasWidth);
 
     /**
-     * Calculate the distance between to points in geographic coordinates.
+     * Calculate the distance between two points in geographic coordinates.
      * Used to calculate scale for map views with geographic (decimal degree)
      * data.
      * @param mapExtent QgsRect containing the current map extent