ash: Display system background while loading wallpaper.

ash/root_window_controller.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 "ash/root_window_controller.h"
 
 #include <vector>
 
 #include "ash/desktop_background/desktop_background_widget_controller.h"
 #include "ash/display/display_controller.h"
 #include "ash/display/multi_display_manager.h"
 #include "ash/shell.h"
 #include "ash/shell_factory.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/base_layout_manager.h"
 #include "ash/wm/event_client_impl.h"
 #include "ash/wm/property_util.h"
 #include "ash/wm/root_window_layout_manager.h"
 #include "ash/wm/screen_dimmer.h"
 #include "ash/wm/system_modal_container_layout_manager.h"
 #include "ash/wm/toplevel_window_event_handler.h"
 #include "ash/wm/visibility_controller.h"
 #include "ash/wm/window_properties.h"
+#include "ash/wm/workspace/system_background_controller.h"
 #include "ash/wm/workspace_controller.h"
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/tooltip_client.h"
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 #include "ui/aura/window_tracker.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
 
 namespace ash {
 namespace {
 
+#if defined(OS_CHROMEOS)
+// Color initially used for the system background after the system has first
+// booted.
+const SkColor kBootSystemBackgroundColor = 0xFFFEFEFE;
+#endif
+
 // Creates a new window for use as a container.
 aura::Window* CreateContainer(int window_id,
                               const char* name,
                               aura::Window* parent) {
   aura::Window* container = new aura::Window(NULL);
   container->set_id(window_id);
   container->SetName(name);
   container->Init(ui::LAYER_NOT_DRAWN);
   parent->AddChild(container);
   if (window_id != internal::kShellWindowId_UnparentedControlContainer)
@@ skipping 132 matching lines @@
       GetContainer(internal::kShellWindowId_AlwaysOnTopContainer);
   always_on_top_container->SetLayoutManager(
       new internal::BaseLayoutManager(
           always_on_top_container->GetRootWindow()));
 }
 
 void RootWindowController::CreateContainers() {
   CreateContainersInRootWindow(root_window_.get());
 }
 
+void RootWindowController::CreateSystemBackground(
+    bool is_first_run_after_boot) {
+  SkColor color = SK_ColorBLACK;
+#if defined(OS_CHROMEOS)
+  if (is_first_run_after_boot)
+    color = kBootSystemBackgroundColor;
+#endif
+  background_.reset(new SystemBackgroundController(root_window_.get(), color));
+}
+
+void RootWindowController::HandleDesktopBackgroundVisible() {
+  if (background_.get())
+    background_->SetColor(SK_ColorBLACK);
+}
+
 void RootWindowController::CloseChildWindows() {
   // Close background widget first as it depends on tooltip.
   root_window_->SetProperty(kWindowDesktopComponent,
       static_cast<DesktopBackgroundWidgetController*>(NULL));
   root_window_->SetProperty(kComponentWrapper,
                             static_cast<ComponentWrapper*>(NULL));
 
   workspace_controller_.reset();
   aura::client::SetTooltipClient(root_window_.get(), NULL);
 
@@ skipping 190 matching lines @@
 
   aura::Window* overlay_container = CreateContainer(
       internal::kShellWindowId_OverlayContainer,
       "OverlayContainer",
       lock_screen_related_containers);
   SetUsesScreenCoordinates(overlay_container);
 }
 
 }  // namespace internal
 }  // namespace ash