SurfaceControl: Add setDropInputMode api
Introduces an API to drop input events on this SurfaceControl. This
policy will be inherited by its children. The caller must hold the
ACCESS_SURFACE_FLINGER permission.
Options include:
ALL: SurfaceControl and its children will not receive any
input regardless of whether it has a valid input channel.
OBSCURED: SurfaceControl and its children will not
receive any input if the layer is obscured, cropped by its parent or
translucent.
These policies are used to enable features that allow for a less trusted
interaction model between apps. See the bug for more details.
Test: atest libgui_test InputDispatcherDropInputFeatureTest
Bug:197364677
Change-Id: I443741d5ab51a45d37fb865f11c433c436d96c1e
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 5a881a3..5aa0b87 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4147,6 +4147,16 @@
flags |= eTraversalNeeded;
}
}
+ if (what & layer_state_t::eDropInputModeChanged) {
+ if (privileged) {
+ if (layer->setDropInputMode(s.dropInputMode)) {
+ flags |= eTraversalNeeded;
+ mInputInfoChanged = true;
+ }
+ } else {
+ ALOGE("Attempt to update DropInputMode without permission ACCESS_SURFACE_FLINGER");
+ }
+ }
// This has to happen after we reparent children because when we reparent to null we remove
// child layers from current state and remove its relative z. If the children are reparented in
// the same transaction, then we have to make sure we reparent the children first so we do not