Check if View's alpha must be updated in setter (a7a7eede) · Commits · e / os / android_frameworks_base

core/java/android/view/View.java

+23 −17

Original line number	Diff line number	Diff line
		@@ -7597,6 +7597,7 @@ public class View implements Drawable.Callback, Drawable.Callback2, KeyEvent.Cal
		*/
		public void setAlpha(float alpha) {
		ensureTransformationInfo();
		if (mTransformationInfo.mAlpha != alpha) {
		mTransformationInfo.mAlpha = alpha;
		invalidateParentCaches();
		if (onSetAlpha((int) (alpha * 255))) {
		@@ -7608,6 +7609,7 @@ public class View implements Drawable.Callback, Drawable.Callback2, KeyEvent.Cal
		invalidate(false);
		}
		}
		}

		/**
		* Faster version of setAlpha() which performs the same steps except there are
		@@ -7616,18 +7618,22 @@ public class View implements Drawable.Callback, Drawable.Callback2, KeyEvent.Cal
		* alpha (the return value for onSetAlpha()).
		*
		* @param alpha The new value for the alpha property
		* @return true if the View subclass handles alpha (the return value for onSetAlpha())
		* @return true if the View subclass handles alpha (the return value for onSetAlpha()) and
		* the new value for the alpha property is different from the old value
		*/
		boolean setAlphaNoInvalidation(float alpha) {
		ensureTransformationInfo();
		if (mTransformationInfo.mAlpha != alpha) {
		mTransformationInfo.mAlpha = alpha;
		boolean subclassHandlesAlpha = onSetAlpha((int) (alpha * 255));
		if (subclassHandlesAlpha) {
		mPrivateFlags \|= ALPHA_SET;
		return true;
		} else {
		mPrivateFlags &= ~ALPHA_SET;
		}
		return subclassHandlesAlpha;
		}
		return false;
		}

		/**