mash: Migrate wallpaper controllers to ash/common.

ash/wallpaper/wallpaper_controller.cc

Index: ash/wallpaper/wallpaper_controller.cc
diff --git a/ash/wallpaper/wallpaper_controller.cc b/ash/wallpaper/wallpaper_controller.cc
deleted file mode 100644
index 59f055eef0b4b3ba096804bdf20f299808644ce6..0000000000000000000000000000000000000000
--- a/ash/wallpaper/wallpaper_controller.cc
+++ /dev/null
@@ -1,250 +0,0 @@
-// 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/wallpaper/wallpaper_controller.h"
-
-#include "ash/aura/wm_window_aura.h"
-#include "ash/common/shell_window_ids.h"
-#include "ash/common/wallpaper/wallpaper_delegate.h"
-#include "ash/common/wm_shell.h"
-#include "ash/root_window_controller.h"
-#include "ash/shell.h"
-#include "ash/wallpaper/wallpaper_controller_observer.h"
-#include "ash/wallpaper/wallpaper_view.h"
-#include "ash/wallpaper/wallpaper_widget_controller.h"
-#include "base/bind.h"
-#include "base/logging.h"
-#include "base/threading/sequenced_worker_pool.h"
-#include "components/wallpaper/wallpaper_resizer.h"
-#include "ui/aura/window.h"
-#include "ui/display/manager/managed_display_info.h"
-#include "ui/display/screen.h"
-#include "ui/views/widget/widget.h"
-
-namespace ash {
-namespace {
-
-// How long to wait reloading the wallpaper after the display size has changed.
-const int kWallpaperReloadDelayMs = 100;
-
-}  // namespace
-
-WallpaperController::WallpaperController(
-    base::SequencedWorkerPool* blocking_pool)
-    : locked_(false),
-      wallpaper_mode_(WALLPAPER_NONE),
-      wallpaper_reload_delay_(kWallpaperReloadDelayMs),
-      blocking_pool_(blocking_pool) {
-  WmShell::Get()->AddDisplayObserver(this);
-  WmShell::Get()->AddShellObserver(this);
-}
-
-WallpaperController::~WallpaperController() {
-  WmShell::Get()->RemoveDisplayObserver(this);
-  WmShell::Get()->RemoveShellObserver(this);
-}
-
-gfx::ImageSkia WallpaperController::GetWallpaper() const {
-  if (current_wallpaper_)
-    return current_wallpaper_->image();
-  return gfx::ImageSkia();
-}
-
-void WallpaperController::AddObserver(WallpaperControllerObserver* observer) {
-  observers_.AddObserver(observer);
-}
-
-void WallpaperController::RemoveObserver(
-    WallpaperControllerObserver* observer) {
-  observers_.RemoveObserver(observer);
-}
-
-wallpaper::WallpaperLayout WallpaperController::GetWallpaperLayout() const {
-  if (current_wallpaper_)
-    return current_wallpaper_->layout();
-  return wallpaper::WALLPAPER_LAYOUT_CENTER_CROPPED;
-}
-
-bool WallpaperController::SetWallpaperImage(const gfx::ImageSkia& image,
-                                            wallpaper::WallpaperLayout layout) {
-  VLOG(1) << "SetWallpaper: image_id="
-          << wallpaper::WallpaperResizer::GetImageId(image)
-          << " layout=" << layout;
-
-  if (WallpaperIsAlreadyLoaded(image, true /* compare_layouts */, layout)) {
-    VLOG(1) << "Wallpaper is already loaded";
-    return false;
-  }
-
-  current_wallpaper_.reset(new wallpaper::WallpaperResizer(
-      image, GetMaxDisplaySizeInNative(), layout, blocking_pool_));
-  current_wallpaper_->StartResize();
-
-  FOR_EACH_OBSERVER(WallpaperControllerObserver, observers_,
-                    OnWallpaperDataChanged());
-  wallpaper_mode_ = WALLPAPER_IMAGE;
-  InstallDesktopControllerForAllWindows();
-  return true;
-}
-
-void WallpaperController::CreateEmptyWallpaper() {
-  current_wallpaper_.reset();
-  wallpaper_mode_ = WALLPAPER_IMAGE;
-  InstallDesktopControllerForAllWindows();
-}
-
-bool WallpaperController::MoveToLockedContainer() {
-  if (locked_)
-    return false;
-  locked_ = true;
-  return ReparentWallpaper(GetWallpaperContainerId(true));
-}
-
-bool WallpaperController::MoveToUnlockedContainer() {
-  if (!locked_)
-    return false;
-  locked_ = false;
-  return ReparentWallpaper(GetWallpaperContainerId(false));
-}
-
-void WallpaperController::OnDisplayConfigurationChanged() {
-  gfx::Size max_display_size = GetMaxDisplaySizeInNative();
-  if (current_max_display_size_ != max_display_size) {
-    current_max_display_size_ = max_display_size;
-    if (wallpaper_mode_ == WALLPAPER_IMAGE && current_wallpaper_) {
-      timer_.Stop();
-      timer_.Start(FROM_HERE,
-                   base::TimeDelta::FromMilliseconds(wallpaper_reload_delay_),
-                   base::Bind(&WallpaperController::UpdateWallpaper,
-                              base::Unretained(this), false /* clear cache */));
-    }
-  }
-}
-
-void WallpaperController::OnRootWindowAdded(WmWindow* root_window) {
-  // The wallpaper hasn't been set yet.
-  if (wallpaper_mode_ == WALLPAPER_NONE)
-    return;
-
-  // Handle resolution change for "built-in" images.
-  gfx::Size max_display_size = GetMaxDisplaySizeInNative();
-  if (current_max_display_size_ != max_display_size) {
-    current_max_display_size_ = max_display_size;
-    if (wallpaper_mode_ == WALLPAPER_IMAGE && current_wallpaper_)
-      UpdateWallpaper(true /* clear cache */);
-  }
-
-  InstallDesktopController(root_window);
-}
-
-// static
-gfx::Size WallpaperController::GetMaxDisplaySizeInNative() {
-  // Return an empty size for test environments where the screen is null.
-  if (!display::Screen::GetScreen())
-    return gfx::Size();
-
-  // Note that |shell| is null when this is called from Chrome running in Mash.
-  WmShell* shell = WmShell::Get();
-
-  gfx::Size max;
-  for (const auto& display : display::Screen::GetScreen()->GetAllDisplays()) {
-    // Use the native size, not ManagedDisplayInfo::size_in_pixel or
-    // Display::size.
-    // TODO(msw): Avoid using Display::size here; see http://crbug.com/613657.
-    gfx::Size size = display.size();
-    if (shell)
-      size = shell->GetDisplayInfo(display.id()).bounds_in_native().size();
-    if (display.rotation() == display::Display::ROTATE_90 ||
-        display.rotation() == display::Display::ROTATE_270) {
-      size = gfx::Size(size.height(), size.width());
-    }
-    max.SetToMax(size);
-  }
-
-  return max;
-}
-
-bool WallpaperController::WallpaperIsAlreadyLoaded(
-    const gfx::ImageSkia& image,
-    bool compare_layouts,
-    wallpaper::WallpaperLayout layout) const {
-  if (!current_wallpaper_)
-    return false;
-
-  // Compare layouts only if necessary.
-  if (compare_layouts && layout != current_wallpaper_->layout())
-    return false;
-
-  return wallpaper::WallpaperResizer::GetImageId(image) ==
-         current_wallpaper_->original_image_id();
-}
-
-void WallpaperController::InstallDesktopController(WmWindow* root_window) {
-  WallpaperWidgetController* component = nullptr;
-  int container_id = GetWallpaperContainerId(locked_);
-
-  switch (wallpaper_mode_) {
-    case WALLPAPER_IMAGE: {
-      component = new WallpaperWidgetController(
-          CreateWallpaper(root_window, container_id));
-      break;
-    }
-    case WALLPAPER_NONE:
-      NOTREACHED();
-      return;
-  }
-
-  aura::Window* aura_root_window = WmWindowAura::GetAuraWindow(root_window);
-  RootWindowController* controller = GetRootWindowController(aura_root_window);
-  controller->SetAnimatingWallpaperWidgetController(
-      new AnimatingWallpaperWidgetController(component));
-  component->StartAnimating(controller);
-}
-
-void WallpaperController::InstallDesktopControllerForAllWindows() {
-  for (WmWindow* root : WmShell::Get()->GetAllRootWindows())
-    InstallDesktopController(root);
-  current_max_display_size_ = GetMaxDisplaySizeInNative();
-}
-
-bool WallpaperController::ReparentWallpaper(int container) {
-  bool moved = false;
-  for (auto* root_window_controller : Shell::GetAllRootWindowControllers()) {
-    // In the steady state (no animation playing) the wallpaper widget
-    // controller exists in the RootWindowController.
-    WallpaperWidgetController* wallpaper_widget_controller =
-        root_window_controller->wallpaper_widget_controller();
-    if (wallpaper_widget_controller) {
-      moved |= wallpaper_widget_controller->Reparent(
-          root_window_controller->GetRootWindow(), container);
-    }
-    // During wallpaper show animations the controller lives in
-    // AnimatingWallpaperWidgetController owned by RootWindowController.
-    // NOTE: If an image load happens during a wallpaper show animation there
-    // can temporarily be two wallpaper widgets. We must reparent both of them,
-    // one above and one here.
-    WallpaperWidgetController* animating_controller =
-        root_window_controller->animating_wallpaper_widget_controller()
-            ? root_window_controller->animating_wallpaper_widget_controller()
-                  ->GetController(false)
-            : nullptr;
-    if (animating_controller) {
-      moved |= animating_controller->Reparent(
-          root_window_controller->GetRootWindow(), container);
-    }
-  }
-  return moved;
-}
-
-int WallpaperController::GetWallpaperContainerId(bool locked) {
-  return locked ? kShellWindowId_LockScreenWallpaperContainer
-                : kShellWindowId_WallpaperContainer;
-}
-
-void WallpaperController::UpdateWallpaper(bool clear_cache) {
-  current_wallpaper_.reset();
-  WmShell::Get()->wallpaper_delegate()->UpdateWallpaper(clear_cache);
-}
-
-}  // namespace ash