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/Layer.cpp b/services/surfaceflinger/Layer.cpp
index ef6f115..d549fe9 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -135,6 +135,7 @@
mDrawingState.postTime = -1;
mDrawingState.destinationFrame.makeInvalid();
mDrawingState.isTrustedOverlay = false;
+ mDrawingState.dropInputMode = gui::DropInputMode::NONE;
if (args.flags & ISurfaceComposerClient::eNoColorFill) {
// Set an invalid color so there is no color fill.
@@ -2541,6 +2542,14 @@
return handle->owner;
}
+bool Layer::setDropInputMode(gui::DropInputMode mode) {
+ if (mDrawingState.dropInputMode == mode) {
+ return false;
+ }
+ mDrawingState.dropInputMode = mode;
+ return true;
+}
+
// ---------------------------------------------------------------------------
std::ostream& operator<<(std::ostream& stream, const Layer::FrameRate& rate) {