Add occlusion support to WebContentsImpl and RenderWidgetHostView

content/browser/web_contents/web_contents_impl_unittest.cc

 // Copyright (c) 2012 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 "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/frame_host/cross_site_transferring_request.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
 #include "content/browser/media/audio_stream_monitor.h"
@@ skipping 2399 matching lines @@
   EXPECT_EQ(1, contents()->GetCapturerCount());
   EXPECT_EQ(capture_size, contents()->GetPreferredSize());
 
   // Decrement capturer count, and since the count has dropped to zero, the
   // original preferred size should be restored.
   contents()->DecrementCapturerCount();
   EXPECT_EQ(0, contents()->GetCapturerCount());
   EXPECT_EQ(original_preferred_size, contents()->GetPreferredSize());
 }
 
+TEST_F(WebContentsImplTest, CapturerPreventsHiding) {
+  const gfx::Size original_preferred_size(1024, 768);
+  contents()->UpdatePreferredSize(original_preferred_size);
+
+  TestRenderWidgetHostView* view = static_cast<TestRenderWidgetHostView*>(
+      contents()->GetMainFrame()->GetRenderViewHost()->GetView());
+
+  // With no capturers, setting and un-setting occlusion should change the
+  // view's occlusion state.
+  EXPECT_FALSE(view->is_showing());
+  contents()->WasShown();
+  EXPECT_TRUE(view->is_showing());
+  contents()->WasHidden();
+  EXPECT_FALSE(view->is_showing());
+  contents()->WasShown();
+  EXPECT_TRUE(view->is_showing());
+
+  // Add a capturer and try to hide the contents. The view will remain visible.
+  contents()->IncrementCapturerCount(gfx::Size());
+  contents()->WasHidden();
+  EXPECT_TRUE(view->is_showing());
+
+  // Remove the capturer, and the WasHidden should take effect.
+  contents()->DecrementCapturerCount();
+  EXPECT_FALSE(view->is_showing());
+}
+
+TEST_F(WebContentsImplTest, CapturerPreventsOcclusion) {
+  const gfx::Size original_preferred_size(1024, 768);
+  contents()->UpdatePreferredSize(original_preferred_size);
+
+  TestRenderWidgetHostView* view = static_cast<TestRenderWidgetHostView*>(
+      contents()->GetMainFrame()->GetRenderViewHost()->GetView());
+
+  // With no capturers, setting and un-setting occlusion should change the
+  // view's occlusion state.
+  EXPECT_FALSE(view->is_occluded());
+  contents()->WasOccluded();
+  EXPECT_TRUE(view->is_occluded());
+  contents()->WasUnOccluded();
+  EXPECT_FALSE(view->is_occluded());
+  contents()->WasOccluded();
+  EXPECT_TRUE(view->is_occluded());
+
+  // Add a capturer. This should cause the view to be un-occluded.
+  contents()->IncrementCapturerCount(gfx::Size());
+  EXPECT_FALSE(view->is_occluded());
+
+  // Try to occlude the view. This will fail to propagate because of the
+  // active capturer.
+  contents()->WasOccluded();
+  EXPECT_FALSE(view->is_occluded());
+
+  // Remove the capturer and try again.
+  contents()->DecrementCapturerCount();
+  EXPECT_FALSE(view->is_occluded());
+  contents()->WasOccluded();
+  EXPECT_TRUE(view->is_occluded());
+}
+
 // Tests that GetLastActiveTime starts with a real, non-zero time and updates
 // on activity.
 TEST_F(WebContentsImplTest, GetLastActiveTime) {
   // The WebContents starts with a valid creation time.
   EXPECT_FALSE(contents()->GetLastActiveTime().is_null());
 
   // Reset the last active time to a known-bad value.
   contents()->last_active_time_ = base::TimeTicks();
   ASSERT_TRUE(contents()->GetLastActiveTime().is_null());
 
@@ skipping 356 matching lines @@
 
   // Destroy the remote player. No power save blockers should remain.
   rfh->OnMessageReceived(
       FrameHostMsg_MediaPausedNotification(0, kPlayerRemoteId));
   EXPECT_FALSE(contents()->has_video_power_save_blocker_for_testing());
   EXPECT_FALSE(contents()->has_audio_power_save_blocker_for_testing());
 }
 #endif
 
 }  // namespace content