Update layers based on the dirty region.
Bug #3413433
This helps Launcher when a widget updates during a scroll, or when interacting
with widgets on the workspace if layers are still turned on.
Change-Id: Ic7a42eb34f74f4ae988039754f815e2efd1d1e4f
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index d3913dc..393412f 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -73,7 +73,6 @@
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
-import java.util.List;
import java.util.WeakHashMap;
/**
@@ -2375,6 +2374,7 @@
})
int mLayerType = LAYER_TYPE_NONE;
Paint mLayerPaint;
+ Rect mLocalDirtyRect;
/**
* Simple constructor to use when creating a view from code.
@@ -8173,7 +8173,9 @@
}
mLayerType = layerType;
- mLayerPaint = mLayerType == LAYER_TYPE_NONE ? null : (paint == null ? new Paint() : paint);
+ final boolean layerDisabled = mLayerType == LAYER_TYPE_NONE;
+ mLayerPaint = layerDisabled ? null : (paint == null ? new Paint() : paint);
+ mLocalDirtyRect = layerDisabled ? null : new Rect();
invalidateParentCaches();
invalidate(true);
@@ -8228,8 +8230,7 @@
mAttachInfo.mHardwareCanvas = canvas;
try {
canvas.setViewport(width, height);
- // TODO: We should pass the dirty rect
- canvas.onPreDraw(null);
+ canvas.onPreDraw(mLocalDirtyRect);
final int restoreCount = canvas.save();
@@ -8251,6 +8252,7 @@
canvas.onPostDraw();
mHardwareLayer.end(currentCanvas);
mAttachInfo.mHardwareCanvas = currentCanvas;
+ mLocalDirtyRect.setEmpty();
}
}