chromeos: Move files in //ash/common to //ash, part 2

ash/common/wm/window_dimmer.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/common/wm/window_dimmer.h"
-
-#include <memory>
-
-#include "ash/common/wm_shell.h"
-#include "ash/common/wm_window.h"
-#include "base/time/time.h"
-#include "ui/aura/window.h"
-#include "ui/compositor/layer.h"
-#include "ui/wm/core/window_animations.h"
-
-namespace ash {
-namespace {
-
-const int kDefaultDimAnimationDurationMs = 200;
-
-const float kDefaultDimOpacity = 0.5f;
-
-}  // namespace
-
-WindowDimmer::WindowDimmer(WmWindow* parent)
-    : parent_(parent),
-      window_(WmShell::Get()->NewWindow(ui::wm::WINDOW_TYPE_NORMAL,
-                                        ui::LAYER_SOLID_COLOR)) {
-  window_->SetVisibilityChangesAnimated();
-  window_->SetVisibilityAnimationType(
-      ::wm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE);
-  window_->SetVisibilityAnimationDuration(
-      base::TimeDelta::FromMilliseconds(kDefaultDimAnimationDurationMs));
-  window_->aura_window()->AddObserver(this);
-
-  SetDimOpacity(kDefaultDimOpacity);
-
-  parent->AddChild(window_);
-  parent->aura_window()->AddObserver(this);
-  parent->StackChildAtTop(window_);
-
-  window_->SetBounds(gfx::Rect(parent_->GetBounds().size()));
-}
-
-WindowDimmer::~WindowDimmer() {
-  if (parent_)
-    parent_->aura_window()->RemoveObserver(this);
-  if (window_) {
-    window_->aura_window()->RemoveObserver(this);
-    window_->Destroy();
-  }
-}
-
-void WindowDimmer::SetDimOpacity(float target_opacity) {
-  DCHECK(window_);
-  window_->GetLayer()->SetColor(
-      SkColorSetA(SK_ColorBLACK, 255 * target_opacity));
-}
-
-void WindowDimmer::OnWindowBoundsChanged(aura::Window* window,
-                                         const gfx::Rect& old_bounds,
-                                         const gfx::Rect& new_bounds) {
-  if (WmWindow::Get(window) == parent_)
-    window_->SetBounds(gfx::Rect(new_bounds.size()));
-}
-
-void WindowDimmer::OnWindowDestroying(aura::Window* window) {
-  if (WmWindow::Get(window) == parent_) {
-    parent_->aura_window()->RemoveObserver(this);
-    parent_ = nullptr;
-  } else {
-    DCHECK_EQ(window_, WmWindow::Get(window));
-    window_->aura_window()->RemoveObserver(this);
-    window_ = nullptr;
-  }
-}
-
-void WindowDimmer::OnWindowHierarchyChanging(
-    const HierarchyChangeParams& params) {
-  if (WmWindow::Get(params.receiver) == window_ &&
-      params.target == params.receiver) {
-    // This may happen on a display change or some unexpected condition. Hide
-    // the window to ensure it isn't obscuring the wrong thing.
-    window_->Hide();
-  }
-}
-
-}  // namespace ash