Make setGradientCenter/Radius work.

The previous implementation would not rebuild the gradient shader
when programmatically changing the shader's properties. Also fixes
the documentation since the gradient center does affect linear
gradients.

Change-Id: I5387188484b862f6835b0da9042b25032e55e792

1 files changed, 3 insertions, 0 deletions

diff --git a/graphics/java/android/graphics/drawable/GradientDrawable.java b/graphics/java/android/graphics/drawable/GradientDrawable.java
index 7adea06..de0fabc 100644
--- a/graphics/java/android/graphics/drawable/GradientDrawable.java
+++ b/graphics/java/android/graphics/drawable/GradientDrawable.java
@@ -240,16 +240,19 @@ public class GradientDrawable extends Drawable {
 
     public void setGradientCenter(float x, float y) {
         mGradientState.setGradientCenter(x, y);
+        mRectIsDirty = true;
         invalidateSelf();
     }
 
     public void setGradientRadius(float gradientRadius) {
         mGradientState.setGradientRadius(gradientRadius);
+        mRectIsDirty = true;
         invalidateSelf();
     }
 
     public void setUseLevel(boolean useLevel) {
         mGradientState.mUseLevel = useLevel;
+        mRectIsDirty = true;
         invalidateSelf();
     }