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Check if View's alpha must be updated in setter

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Change-Id: I91094b43dbacbd637e04ce4074d8df6a27ddf6fb
This commit is contained in:
Michael Jurka
2012-01-17 06:06:17 -08:00
parent 6a78cd8586
commit a7a7eedee5
1 changed files with 23 additions and 17 deletions
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40
core/java/android/view/View.java
View File

@@ -7597,15 +7597,17 @@ public class View implements Drawable.Callback, Drawable.Callback2, KeyEvent.Cal
*/
public void setAlpha(float alpha) {
ensureTransformationInfo();
mTransformationInfo.mAlpha = alpha;
invalidateParentCaches();
if (onSetAlpha((int) (alpha * 255))) {
mPrivateFlags |= ALPHA_SET;
// subclass is handling alpha - don't optimize rendering cache invalidation
invalidate(true);
} else {
mPrivateFlags &= ~ALPHA_SET;
invalidate(false);
if (mTransformationInfo.mAlpha != alpha) {
mTransformationInfo.mAlpha = alpha;
invalidateParentCaches();
if (onSetAlpha((int) (alpha * 255))) {
mPrivateFlags |= ALPHA_SET;
// subclass is handling alpha - don't optimize rendering cache invalidation
invalidate(true);
} else {
mPrivateFlags &= ~ALPHA_SET;
invalidate(false);
}
}
}
@@ -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();
mTransformationInfo.mAlpha = alpha;
boolean subclassHandlesAlpha = onSetAlpha((int) (alpha * 255));
if (subclassHandlesAlpha) {
mPrivateFlags |= ALPHA_SET;
} else {
mPrivateFlags &= ~ALPHA_SET;
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;
}
/**