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-rw-r--r--libs/gui/WindowInfo.cpp8
-rw-r--r--libs/gui/include/gui/WindowInfo.h4
-rw-r--r--services/inputflinger/dispatcher/InputDispatcher.cpp21
-rw-r--r--services/inputflinger/dispatcher/InputDispatcher.h4
-rw-r--r--services/inputflinger/tests/InputDispatcher_test.cpp88
5 files changed, 107 insertions, 18 deletions
diff --git a/libs/gui/WindowInfo.cpp b/libs/gui/WindowInfo.cpp
index 86bf0ee745..ad0d99d11e 100644
--- a/libs/gui/WindowInfo.cpp
+++ b/libs/gui/WindowInfo.cpp
@@ -73,14 +73,6 @@ void WindowInfo::addTouchableRegion(const Rect& region) {
touchableRegion.orSelf(region);
}
-bool WindowInfo::touchableRegionContainsPoint(int32_t x, int32_t y) const {
- return touchableRegion.contains(x, y);
-}
-
-bool WindowInfo::frameContainsPoint(int32_t x, int32_t y) const {
- return x >= frame.left && x < frame.right && y >= frame.top && y < frame.bottom;
-}
-
bool WindowInfo::supportsSplitTouch() const {
return !inputConfig.test(InputConfig::PREVENT_SPLITTING);
}
diff --git a/libs/gui/include/gui/WindowInfo.h b/libs/gui/include/gui/WindowInfo.h
index 32d60be612..2d1b51a418 100644
--- a/libs/gui/include/gui/WindowInfo.h
+++ b/libs/gui/include/gui/WindowInfo.h
@@ -254,10 +254,6 @@ struct WindowInfo : public Parcelable {
void addTouchableRegion(const Rect& region);
- bool touchableRegionContainsPoint(int32_t x, int32_t y) const;
-
- bool frameContainsPoint(int32_t x, int32_t y) const;
-
bool supportsSplitTouch() const;
bool isSpy() const;
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index 7f54bf1945..55976137c5 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -573,6 +573,18 @@ bool windowAcceptsTouchAt(const WindowInfo& windowInfo, int32_t displayId, float
return true;
}
+// Returns true if the given window's frame can occlude pointer events at the given display
+// location.
+bool windowOccludesTouchAt(const WindowInfo& windowInfo, int displayId, float x, float y,
+ const ui::Transform& displayTransform) {
+ if (windowInfo.displayId != displayId) {
+ return false;
+ }
+ const auto frame = displayTransform.transform(windowInfo.frame);
+ const auto p = floor(displayTransform.transform(x, y));
+ return p.x >= frame.left && p.x < frame.right && p.y >= frame.top && p.y < frame.bottom;
+}
+
bool isPointerFromStylus(const MotionEntry& entry, int32_t pointerIndex) {
return isFromSource(entry.source, AINPUT_SOURCE_STYLUS) &&
isStylusToolType(entry.pointerProperties[pointerIndex].toolType);
@@ -3056,7 +3068,7 @@ static bool canBeObscuredBy(const sp<WindowInfoHandle>& windowHandle,
* If neither of those is true, then it means the touch can be allowed.
*/
InputDispatcher::TouchOcclusionInfo InputDispatcher::computeTouchOcclusionInfoLocked(
- const sp<WindowInfoHandle>& windowHandle, int32_t x, int32_t y) const {
+ const sp<WindowInfoHandle>& windowHandle, float x, float y) const {
const WindowInfo* windowInfo = windowHandle->getInfo();
int32_t displayId = windowInfo->displayId;
const std::vector<sp<WindowInfoHandle>>& windowHandles = getWindowHandlesLocked(displayId);
@@ -3070,7 +3082,8 @@ InputDispatcher::TouchOcclusionInfo InputDispatcher::computeTouchOcclusionInfoLo
break; // All future windows are below us. Exit early.
}
const WindowInfo* otherInfo = otherHandle->getInfo();
- if (canBeObscuredBy(windowHandle, otherHandle) && otherInfo->frameContainsPoint(x, y) &&
+ if (canBeObscuredBy(windowHandle, otherHandle) &&
+ windowOccludesTouchAt(*otherInfo, displayId, x, y, getTransformLocked(displayId)) &&
!haveSameApplicationToken(windowInfo, otherInfo)) {
if (DEBUG_TOUCH_OCCLUSION) {
info.debugInfo.push_back(
@@ -3140,7 +3153,7 @@ bool InputDispatcher::isTouchTrustedLocked(const TouchOcclusionInfo& occlusionIn
}
bool InputDispatcher::isWindowObscuredAtPointLocked(const sp<WindowInfoHandle>& windowHandle,
- int32_t x, int32_t y) const {
+ float x, float y) const {
int32_t displayId = windowHandle->getInfo()->displayId;
const std::vector<sp<WindowInfoHandle>>& windowHandles = getWindowHandlesLocked(displayId);
for (const sp<WindowInfoHandle>& otherHandle : windowHandles) {
@@ -3149,7 +3162,7 @@ bool InputDispatcher::isWindowObscuredAtPointLocked(const sp<WindowInfoHandle>&
}
const WindowInfo* otherInfo = otherHandle->getInfo();
if (canBeObscuredBy(windowHandle, otherHandle) &&
- otherInfo->frameContainsPoint(x, y)) {
+ windowOccludesTouchAt(*otherInfo, displayId, x, y, getTransformLocked(displayId))) {
return true;
}
}
diff --git a/services/inputflinger/dispatcher/InputDispatcher.h b/services/inputflinger/dispatcher/InputDispatcher.h
index 269bfddb8c..9c8d5889d1 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.h
+++ b/services/inputflinger/dispatcher/InputDispatcher.h
@@ -565,11 +565,11 @@ private:
};
TouchOcclusionInfo computeTouchOcclusionInfoLocked(
- const sp<android::gui::WindowInfoHandle>& windowHandle, int32_t x, int32_t y) const
+ const sp<android::gui::WindowInfoHandle>& windowHandle, float x, float y) const
REQUIRES(mLock);
bool isTouchTrustedLocked(const TouchOcclusionInfo& occlusionInfo) const REQUIRES(mLock);
bool isWindowObscuredAtPointLocked(const sp<android::gui::WindowInfoHandle>& windowHandle,
- int32_t x, int32_t y) const REQUIRES(mLock);
+ float x, float y) const REQUIRES(mLock);
bool isWindowObscuredLocked(const sp<android::gui::WindowInfoHandle>& windowHandle) const
REQUIRES(mLock);
std::string dumpWindowForTouchOcclusion(const android::gui::WindowInfo* info,
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index f0f4d93ecd..621d9eadb8 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -5361,6 +5361,94 @@ TEST_P(InputDispatcherDisplayOrientationFixture, HitTestInDifferentOrientations)
window->assertNoEvents();
}
+// This test verifies the occlusion detection for all rotations of the display by tapping
+// in different locations on the display, specifically points close to the four corners of a
+// window.
+TEST_P(InputDispatcherDisplayOrientationFixture, BlockUntrustClickInDifferentOrientations) {
+ constexpr static int32_t displayWidth = 400;
+ constexpr static int32_t displayHeight = 800;
+
+ std::shared_ptr<FakeApplicationHandle> untrustedWindowApplication =
+ std::make_shared<FakeApplicationHandle>();
+ std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+
+ const auto rotation = GetParam();
+
+ // Set up the display with the specified rotation.
+ const bool isRotated = rotation == ui::ROTATION_90 || rotation == ui::ROTATION_270;
+ const int32_t logicalDisplayWidth = isRotated ? displayHeight : displayWidth;
+ const int32_t logicalDisplayHeight = isRotated ? displayWidth : displayHeight;
+ const ui::Transform displayTransform(ui::Transform::toRotationFlags(rotation),
+ logicalDisplayWidth, logicalDisplayHeight);
+ addDisplayInfo(ADISPLAY_ID_DEFAULT, displayTransform);
+
+ // Create a window that not trusted.
+ const Rect untrustedWindowFrameInLogicalDisplay(100, 100, 200, 300);
+
+ const Rect untrustedWindowFrameInDisplay =
+ displayTransform.inverse().transform(untrustedWindowFrameInLogicalDisplay);
+
+ sp<FakeWindowHandle> untrustedWindow =
+ sp<FakeWindowHandle>::make(untrustedWindowApplication, mDispatcher, "UntrustedWindow",
+ ADISPLAY_ID_DEFAULT);
+ untrustedWindow->setFrame(untrustedWindowFrameInDisplay, displayTransform);
+ untrustedWindow->setTrustedOverlay(false);
+ untrustedWindow->setTouchOcclusionMode(TouchOcclusionMode::BLOCK_UNTRUSTED);
+ untrustedWindow->setTouchable(false);
+ untrustedWindow->setAlpha(1.0f);
+ untrustedWindow->setOwnerInfo(gui::Pid{1}, gui::Uid{101});
+ addWindow(untrustedWindow);
+
+ // Create a simple app window below the untrusted window.
+ const Rect simpleAppWindowFrameInLogicalDisplay(0, 0, 300, 600);
+ const Rect simpleAppWindowFrameInDisplay =
+ displayTransform.inverse().transform(simpleAppWindowFrameInLogicalDisplay);
+
+ sp<FakeWindowHandle> simpleAppWindow =
+ sp<FakeWindowHandle>::make(application, mDispatcher, "SimpleAppWindow",
+ ADISPLAY_ID_DEFAULT);
+ simpleAppWindow->setFrame(simpleAppWindowFrameInDisplay, displayTransform);
+ simpleAppWindow->setOwnerInfo(gui::Pid{2}, gui::Uid{202});
+ addWindow(simpleAppWindow);
+
+ // The following points in logical display space should be inside the untrusted window, so
+ // the simple window could not receive events that coordinate is these point.
+ static const std::array<vec2, 4> untrustedPoints{
+ {{100, 100}, {199.99, 100}, {100, 299.99}, {199.99, 299.99}}};
+
+ for (const auto untrustedPoint : untrustedPoints) {
+ const vec2 p = displayTransform.inverse().transform(untrustedPoint);
+ const PointF pointInDisplaySpace{p.x, p.y};
+ mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_DOWN,
+ AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT,
+ {pointInDisplaySpace}));
+ mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_UP,
+ AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT,
+ {pointInDisplaySpace}));
+ }
+ untrustedWindow->assertNoEvents();
+ simpleAppWindow->assertNoEvents();
+ // The following points in logical display space should be outside the untrusted window, so
+ // the simple window should receive events that coordinate is these point.
+ static const std::array<vec2, 5> trustedPoints{
+ {{200, 100}, {100, 300}, {200, 300}, {100, 99.99}, {99.99, 100}}};
+ for (const auto trustedPoint : trustedPoints) {
+ const vec2 p = displayTransform.inverse().transform(trustedPoint);
+ const PointF pointInDisplaySpace{p.x, p.y};
+ mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_DOWN,
+ AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT,
+ {pointInDisplaySpace}));
+ simpleAppWindow->consumeMotionDown(ADISPLAY_ID_DEFAULT,
+ AMOTION_EVENT_FLAG_WINDOW_IS_PARTIALLY_OBSCURED);
+ mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_UP,
+ AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT,
+ {pointInDisplaySpace}));
+ simpleAppWindow->consumeMotionUp(ADISPLAY_ID_DEFAULT,
+ AMOTION_EVENT_FLAG_WINDOW_IS_PARTIALLY_OBSCURED);
+ }
+ untrustedWindow->assertNoEvents();
+}
+
// Run the precision tests for all rotations.
INSTANTIATE_TEST_SUITE_P(InputDispatcherDisplayOrientationTests,
InputDispatcherDisplayOrientationFixture,
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-10-21 17:04:37 +0000