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Commit 9538eea5 authored by Alan Viverette's avatar Alan Viverette
Browse files

Ignore accessibility overlays during visible window computation 

Previously, the conditional for checking the layer type before
accounting for the window bounds was incorrectly inverted, but
we can simplify by just skipping accessibility overlay windows
completely.

BUG: 18358878
BUG: 18359820
BUG: 18359788
Change-Id: I9ba1e43a0fef4fa40693bd8c7e883c2ef45b4c4d
parent 136f5415

services/core/java/com/android/server/wm/AccessibilityController.java

+13 −14
Original line number Diff line number Diff line
@@ -984,12 +984,7 @@ final class AccessibilityController { 


                final int visibleWindowCount = visibleWindows.size();

                for (int i = visibleWindowCount - 1; i >= 0; i--) {

                    WindowState windowState = visibleWindows.valueAt(i);



                    // Compute the bounds in the screen.

                    Rect boundsInScreen = mTempRect;

                    computeWindowBoundsInScreen(windowState, boundsInScreen);



                    final WindowState windowState = visibleWindows.valueAt(i);

                    final int flags = windowState.mAttrs.flags;



                    // If the window is not touchable - ignore.
@@ -997,6 +992,16 @@ final class AccessibilityController { 
                        continue;

                    }



                    // If the window is an accessibility overlay - ignore.

                    if (windowState.mAttrs.type ==

                            WindowManager.LayoutParams.TYPE_ACCESSIBILITY_OVERLAY) {

                        continue;

                    }



                    // Compute the bounds in the screen.

                    final Rect boundsInScreen = mTempRect;

                    computeWindowBoundsInScreen(windowState, boundsInScreen);



                    // If the window is completely covered by other windows - ignore.

                    if (unaccountedSpace.quickReject(boundsInScreen)) {

                        continue;
@@ -1013,14 +1018,8 @@ final class AccessibilityController { 
                        }

                    }



                    // Account for the space this window takes if the window

                    // is not an accessibility overlay which does not change

                    // the reported windows.

                    if (windowState.mAttrs.type == WindowManager.LayoutParams

                            .TYPE_ACCESSIBILITY_OVERLAY) {

                    unaccountedSpace.op(boundsInScreen, unaccountedSpace,

                            Region.Op.REVERSE_DIFFERENCE);

                    }



                    // We figured out what is touchable for the entire screen - done.

                    if (unaccountedSpace.isEmpty()) {