[vr] Close exit prompt when clicking on background

chrome/browser/android/vr_shell/ui_scene_manager.cc

 // Copyright 2017 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 "chrome/browser/android/vr_shell/ui_scene_manager.h"
 
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/android/vr_shell/textures/close_button_texture.h"
 #include "chrome/browser/android/vr_shell/textures/ui_texture.h"
 #include "chrome/browser/android/vr_shell/ui_elements/audio_capture_indicator.h"
 #include "chrome/browser/android/vr_shell/ui_elements/button.h"
+#include "chrome/browser/android/vr_shell/ui_elements/content_backplane.h"
 #include "chrome/browser/android/vr_shell/ui_elements/exit_prompt.h"
 #include "chrome/browser/android/vr_shell/ui_elements/exit_warning.h"
 #include "chrome/browser/android/vr_shell/ui_elements/loading_indicator.h"
 #include "chrome/browser/android/vr_shell/ui_elements/permanent_security_warning.h"
 #include "chrome/browser/android/vr_shell/ui_elements/screen_capture_indicator.h"
 #include "chrome/browser/android/vr_shell/ui_elements/screen_dimmer.h"
 #include "chrome/browser/android/vr_shell/ui_elements/transient_security_warning.h"
 #include "chrome/browser/android/vr_shell/ui_elements/ui_element.h"
 #include "chrome/browser/android/vr_shell/ui_elements/ui_element_debug_id.h"
 #include "chrome/browser/android/vr_shell/ui_elements/url_bar.h"
@@ skipping 183 matching lines @@
   element->set_fill(vr_shell::Fill::CONTENT);
   element->set_size({kContentWidth, kContentHeight, 1});
   element->set_translation({0, kContentVerticalOffset, -kContentDistance});
   element->set_visible(false);
   main_content_ = element.get();
   content_elements_.push_back(element.get());
   scene_->AddUiElement(std::move(element));
 
   // Place an invisible but hittable plane behind the content quad, to keep the
   // reticle roughly planar with the content if near content.
-  element = base::MakeUnique<UiElement>();
+  element = base::MakeUnique<ContentBackplane>(
+      base::Bind(&UiSceneManager::OnBackplaneClicked, base::Unretained(this)));
   element->set_debug_id(kBackplane);
   element->set_id(AllocateId());
   element->set_fill(vr_shell::Fill::NONE);
   element->set_size({kBackplaneSize, kBackplaneSize, 1.0});
   element->set_translation({0.0, 0.0, -kTextureOffset});
   element->set_parent_id(main_content_->id());
   main_content_backplane_ = element.get();
   content_elements_.push_back(element.get());
   scene_->AddUiElement(std::move(element));
 
@@ skipping 223 matching lines @@
   browser_->NavigateBack();
 }
 
 void UiSceneManager::OnSecurityIconClicked() {
   if (scene_->is_prompting_to_exit())
     return;
   scene_->set_is_prompting_to_exit(true);
   ConfigureScene();
 }
 
-void UiSceneManager::OnExitPromptPrimaryButtonClicked() {
+void UiSceneManager::OnBackplaneClicked() {
+  CloseExitPrompt();
+}
+
+void UiSceneManager::CloseExitPrompt() {
   if (!scene_->is_prompting_to_exit())
     return;
   scene_->set_is_prompting_to_exit(false);
   ConfigureScene();
 }
 
+void UiSceneManager::OnExitPromptPrimaryButtonClicked() {
+  CloseExitPrompt();
+}
+
 void UiSceneManager::OnExitPromptSecondaryButtonClicked() {
   OnUnsupportedMode(UiUnsupportedMode::kUnhandledPageInfo);
 }
 
 void UiSceneManager::SetURL(const GURL& gurl) {
   url_bar_->SetURL(gurl);
 }
 
 void UiSceneManager::SetSecurityLevel(security_state::SecurityLevel level) {
   url_bar_->SetSecurityLevel(level);
@@ skipping 37 matching lines @@
   if (fullscreen_)
     return ColorScheme::kModeFullscreen;
   return ColorScheme::kModeNormal;
 }
 
 const ColorScheme& UiSceneManager::color_scheme() const {
   return ColorScheme::GetColorScheme(mode());
 }
 
 }  // namespace vr_shell