Fix slow / jerky tracking in Curves

bug:7394837
Change-Id: I70758b463601faa19d05da58d0163b31df7b4b91

2 files changed, 8 insertions, 2 deletions

diff --git a/src/com/android/gallery3d/filtershow/ui/ImageCurves.java b/src/com/android/gallery3d/filtershow/ui/ImageCurves.java
index 8f7560e10..4b289e757 100644
--- a/src/com/android/gallery3d/filtershow/ui/ImageCurves.java
+++ b/src/com/android/gallery3d/filtershow/ui/ImageCurves.java
@@ -202,14 +202,14 @@ public class ImageCurves extends ImageSlave {
         }
 
         if (spline.isPointContained(posX, pick)) {
-            mCurrentControlPoint.x = posX;
-            mCurrentControlPoint.y = posY;
             spline.didMovePoint(mCurrentControlPoint);
+            spline.movePoint(pick, posX, posY);
         } else if (pick != -1 && spline.getNbPoints() > 2) {
             spline.deletePoint(pick);
             mDidDelete = true;
         }
         updateCachedImage();
+        invalidate();
         return true;
     }
 
diff --git a/src/com/android/gallery3d/filtershow/ui/Spline.java b/src/com/android/gallery3d/filtershow/ui/Spline.java
index 67840dc23..90a7bf9ec 100644
--- a/src/com/android/gallery3d/filtershow/ui/Spline.java
+++ b/src/com/android/gallery3d/filtershow/ui/Spline.java
@@ -68,6 +68,12 @@ public class Spline {
         mCurrentControlPoint = point;
     }
 
+    public void movePoint(int pick, float x, float y) {
+        ControlPoint point = mPoints.elementAt(pick);
+        point.x = x;
+        point.y = y;
+    }
+
     public boolean isOriginal() {
         if (this.getNbPoints() > 2) {
             return false;