Draw underlay behind android apps using talkback

components/exo/shell_surface_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/aura/wm_window_aura.h"
+#include "ash/common/accessibility_delegate.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm/wm_event.h"
 #include "ash/common/wm_shell.h"
 #include "ash/wm/window_state_aura.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/exo/buffer.h"
 #include "components/exo/display.h"
 #include "components/exo/shell_surface.h"
 #include "components/exo/sub_surface.h"
 #include "components/exo/surface.h"
 #include "components/exo/test/exo_test_base.h"
 #include "components/exo/test/exo_test_helper.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
+#include "ui/aura/window_targeter.h"
 #include "ui/base/hit_test.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
+#include "ui/events/base_event_utils.h"
 #include "ui/views/widget/widget.h"
 #include "ui/wm/core/shadow.h"
 #include "ui/wm/core/shadow_controller.h"
 #include "ui/wm/core/shadow_types.h"
 #include "ui/wm/core/window_util.h"
 
 namespace exo {
 namespace {
 
 using ShellSurfaceTest = test::ExoTestBase;
@@ skipping 640 matching lines @@
   EXPECT_EQ(1.f, shell_surface->shadow_underlay_for_test()->layer()->opacity());
   EXPECT_NE(shell_surface->GetWidget()->GetWindowBoundsInScreen(),
             shell_surface->shadow_underlay_for_test()->bounds());
 
   // Leave fullscreen mode. Shadow underlay is restored.
   window->GetWindowState()->OnWMEvent(&event);
   EXPECT_TRUE(shell_surface->shadow_underlay_for_test()->IsVisible());
   EXPECT_EQ(shadow_bounds, shell_surface->shadow_underlay_for_test()->bounds());
 }
 
+TEST_F(ShellSurfaceTest, SpokenFeedbackFullscreenBackground) {
+  gfx::Size buffer_size(256, 256);
+  std::unique_ptr<Buffer> buffer(
+      new Buffer(exo_test_helper()->CreateGpuMemoryBuffer(buffer_size)));
+  std::unique_ptr<Surface> surface(new Surface);
+  std::unique_ptr<ShellSurface> shell_surface(
+      new ShellSurface(surface.get(), nullptr, gfx::Rect(640, 480), true,
+                       ash::kShellWindowId_DefaultContainer));
+
+  surface->Attach(buffer.get());
+
+  gfx::Rect shadow_bounds(10, 10, 100, 100);
+  shell_surface->SetRectangularShadow(shadow_bounds);
+  surface->Commit();
+  ASSERT_EQ(shadow_bounds, shell_surface->shadow_underlay_for_test()->bounds());
+
+  aura::Window* shell_window = shell_surface->GetWidget()->GetNativeWindow();
+  aura::WindowTargeter* targeter = static_cast<aura::WindowTargeter*>(
+      static_cast<ui::EventTarget*>(shell_window)->GetEventTargeter());
+
+  gfx::Point pt(300, 300);
+  ui::MouseEvent ev_out(ui::ET_MOUSE_PRESSED, pt, pt, ui::EventTimeForNow(),
+                        ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON);
+  pt = gfx::Point(250, 250);
+  ui::MouseEvent ev_in(ui::ET_MOUSE_PRESSED, pt, pt, ui::EventTimeForNow(),
+                       ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON);
+
+  EXPECT_FALSE(targeter->SubtreeShouldBeExploredForEvent(shell_window, ev_out));
+
+  // Enable spoken feedback.
+  ash::WmShell::Get()->accessibility_delegate()->ToggleSpokenFeedback(
+      ash::A11Y_NOTIFICATION_NONE);
+  shell_surface->OnAccessibilityModeChanged(ash::A11Y_NOTIFICATION_NONE);
+
+  EXPECT_EQ(display::Screen::GetScreen()->GetPrimaryDisplay().bounds(),
+            shell_surface->shadow_underlay_for_test()->bounds());
+  EXPECT_TRUE(shell_surface->shadow_underlay_for_test()->IsVisible());
+  EXPECT_NE(shell_surface->GetWidget()->GetWindowBoundsInScreen(),
+            shell_surface->shadow_underlay_for_test()->bounds());
+
+  // Test event capture
+  EXPECT_TRUE(targeter->SubtreeShouldBeExploredForEvent(shell_window, ev_out));
+  EXPECT_EQ(shell_surface->shadow_underlay_for_test(),
+            static_cast<ui::EventTargeter*>(targeter)->FindTargetForEvent(
+                shell_window, &ev_out));
+  EXPECT_NE(shell_surface->shadow_underlay_for_test(),
+            static_cast<ui::EventTargeter*>(targeter)->FindTargetForEvent(
+                shell_window, &ev_in));
+
+  // Disable spoken feedback. Shadow underlay is restored.
+  ash::WmShell::Get()->accessibility_delegate()->ToggleSpokenFeedback(
+      ash::A11Y_NOTIFICATION_SHOW);
+  shell_surface->OnAccessibilityModeChanged(ash::A11Y_NOTIFICATION_NONE);
+
+  EXPECT_TRUE(shell_surface->shadow_underlay_for_test()->IsVisible());
+  EXPECT_EQ(shadow_bounds, shell_surface->shadow_underlay_for_test()->bounds());
+}
+
 }  // namespace
 }  // namespace exo