Changeset 1058 for trunk/sources/HeuristicLab.Visualization/ZoomListener.cs

Timestamp:

12/23/08 15:44:47 (15 years ago)

Author:

bspisic

Message:

#424
Implemented zooming by holding the control key + scrolling

File:

• trunk/sources/HeuristicLab.Visualization/ZoomListener.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Visualization/ZoomListener.cs

@@ -53 +53 @@
 
     #endregion
+
+    public static RectangleD ZoomClippingArea(RectangleD clippingArea, double zoomFactor) {
+      double x1, x2, y1, y2, width, height;
+
+      width = clippingArea.Width * zoomFactor;
+      height = clippingArea.Height * zoomFactor;
+
+      x1 = clippingArea.X1 - (width - clippingArea.Width) / 2;
+      y1 = clippingArea.Y1 - (height - clippingArea.Height) / 2;
+      x2 = width + x1;
+      y2 = height + y1;
+
+      return new RectangleD(x1, y1, x2, y2);
+    }
   }
 }