Use empty frame for input when layer bounds is invalid
Fixed a few issues:
1. Return INVALID_RECT for size if there's no buffer for BLAST. This was
already done in BufferQueueLayer. This ensures we don't assume the layer
has a valid size when there's no buffer
2. Don't transform invalid layer bounds in fillInputInfo since it could
result in sending a valid frame when the layer actually has no bounds.
Instead just set input frame to empty, reset the transform, and return
early.
Test: Window with no width or height doesn't get untrusted touch
Test: InputSurfacesTest
Fixes: 173297887
Change-Id: I191d411b0f83ce57b6fdc20a1def8070110d418b
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index cc47d12..ac0eb90 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -1114,6 +1114,9 @@
// null.
sp<Layer> getRootLayer();
+ // Fills in the frame and transform info for the InputWindowInfo
+ void fillInputFrameInfo(InputWindowInfo& info);
+
// Cached properties computed from drawing state
// Effective transform taking into account parent transforms and any parent scaling, which is
// a transform from the current layer coordinate space to display(screen) coordinate space.