Applied patch from Jurgen Fischer with some modifications.

git-svn-id: http://svn.osgeo.org/qgis/trunk@7235 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: wonder

python/gui/qgsrubberband.sip

@@ -14,9 +14,17 @@ class QgsRubberBand: QgsMapCanvasItem
 
     void reset(bool isPolygon = false);
     void addPoint(const QgsPoint & p);
+
+    // ! Remove last point
+    void removePoint(bool update = true);
+
     void movePoint(const QgsPoint & p);
     void movePoint(int index, const QgsPoint& p);
 
+    int size() const;
+    const QList<QgsPoint>& getPoints() const;
+    const QgsPoint& getPoint(int index) const;
+
   protected:
     virtual void paint(QPainter* p);
 

src/gui/qgsrubberband.cpp

@@ -56,7 +56,8 @@ void QgsRubberBand::setWidth(int width)
 */
 void QgsRubberBand::reset(bool isPolygon)
 {
-  mPoints.resize(1); // addPoint assumes an initial allocated point
+  mPoints.clear();
+  mPoints.append(QgsPoint()); // addPoint assumes an initial allocated point
   mIsPolygon = isPolygon;
   updateRect();
   update();
@@ -76,12 +77,50 @@ void QgsRubberBand::addPoint(const QgsPoint & p, bool do_update /* = true */)
   }
 }
 
+/*!
+  Remove a point
+ */
+void QgsRubberBand::removePoint(bool do_update)
+{
+  mPoints.pop_back();
+  if(do_update)
+  {
+    updateRect();
+    update();
+  }
+}
+
+/*!
+  Return number of points
+ */
+int QgsRubberBand::size() const
+{
+  return mPoints.size();
+}
+
+/*!
+  Return the points
+ */
+const QList<QgsPoint>& QgsRubberBand::getPoints() const
+{
+  return mPoints;
+}
+
+/*!
+  Return a point
+ */
+const QgsPoint& QgsRubberBand::getPoint(int index) const
+{
+  return mPoints[index];
+}
+
+
 /*!
   Update the line between the last added point and the mouse position.
 */
 void QgsRubberBand::movePoint(const QgsPoint & p)
 {
-  mPoints[mPoints.size()-1] = p; // Update current mouse position
+  mPoints[ size()-1 ] = p; // Update current mouse position
   updateRect();
   update();
 }
@@ -101,7 +140,7 @@ void QgsRubberBand::paint(QPainter* p)
   if (mPoints.size() > 1)
   {
     QPolygonF pts;
-    for (uint i = 0; i < mPoints.size(); i++)
+    for (int i = 0; i < mPoints.size(); i++)
       pts.append(toCanvasCoords(mPoints[i])-pos());
 
     p->setPen(mPen);
@@ -122,7 +161,7 @@ void QgsRubberBand::updateRect()
   if (mPoints.size() > 0)
   {
     QgsRect r(mPoints[0], mPoints[0]);
-    for (uint i = 1; i < mPoints.size(); i++)
+    for (int i = 1; i < mPoints.size(); i++)
       r.combineExtentWith(mPoints[i].x(), mPoints[i].y());
     setRect(r);
   }

src/gui/qgsrubberband.h

@@ -17,8 +17,8 @@
 #define QGSRUBBERBAND_H
 
 #include "qgsmapcanvasitem.h"
-#include <deque>
 #include <QBrush>
+#include <QList>
 #include <QPen>
 #include <QPolygon>
 class QPaintEvent;
@@ -38,9 +38,16 @@ class GUI_EXPORT QgsRubberBand: public QgsMapCanvasItem
     //! If adding more points consider using update=false for better performance
     void addPoint(const QgsPoint & p, bool update = true);
 
+    // ! Remove last point
+    void removePoint(bool update = true);
+
     void movePoint(const QgsPoint & p);
     void movePoint(int index, const QgsPoint& p);
 
+    int size() const;
+    const QList<QgsPoint>& getPoints() const;
+    const QgsPoint& getPoint(int index) const;
+
   protected:
     virtual void paint(QPainter* p);
 
@@ -50,7 +57,7 @@ class GUI_EXPORT QgsRubberBand: public QgsMapCanvasItem
   private:
     QBrush mBrush;
     QPen mPen;
-    std::deque<QgsPoint> mPoints;
+    QList<QgsPoint> mPoints;
     bool mIsPolygon;
 };