/**
* Sets a rectangular area on this view to which the view will be clipped
- * it is drawn. Setting the value to null will remove the clip bounds
+ * when it is drawn. Setting the value to null will remove the clip bounds
* and the view will draw normally, using its full bounds.
*
* @param clipBounds The rectangular area, in the local coordinates of
* this view, to which future drawing operations will be clipped.
*/
public void setClipBounds(Rect clipBounds) {
- mClipBounds = clipBounds;
if (clipBounds != null) {
- invalidate(clipBounds);
+ if (clipBounds.equals(mClipBounds)) {
+ return;
+ }
+ if (mClipBounds == null) {
+ invalidate();
+ mClipBounds = new Rect(clipBounds);
+ } else {
+ invalidate(Math.min(mClipBounds.left, clipBounds.left),
+ Math.min(mClipBounds.top, clipBounds.top),
+ Math.max(mClipBounds.right, clipBounds.right),
+ Math.max(mClipBounds.bottom, clipBounds.bottom));
+ mClipBounds.set(clipBounds);
+ }
} else {
- invalidate();
+ if (mClipBounds != null) {
+ invalidate();
+ mClipBounds = null;
+ }
}
}