Move shadow code to views\corewm

ash/wm/shadow.cc

Index: ash/wm/shadow.cc
===================================================================
--- ash/wm/shadow.cc	(revision 167688)
+++ ash/wm/shadow.cc	(working copy)
@@ -1,176 +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/wm/shadow.h"
-
-#include "ash/wm/image_grid.h"
-#include "grit/ash_resources.h"
-#include "grit/ui_resources.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-
-namespace {
-
-// Shadow opacity for different styles.
-const float kActiveShadowOpacity = 1.0f;
-const float kInactiveShadowOpacity = 0.2f;
-const float kSmallShadowOpacity = 1.0f;
-
-// Duration for opacity animation in milliseconds.
-const int kShadowAnimationDurationMs = 100;
-
-float GetOpacityForStyle(ash::internal::Shadow::Style style) {
-  switch (style) {
-    case ash::internal::Shadow::STYLE_ACTIVE:
-      return kActiveShadowOpacity;
-    case ash::internal::Shadow::STYLE_INACTIVE:
-      return kInactiveShadowOpacity;
-    case ash::internal::Shadow::STYLE_SMALL:
-      return kSmallShadowOpacity;
-    default:
-      NOTREACHED() << "Unhandled style " << style;
-  }
-  return 1.0f;
-}
-
-}  // namespace
-
-namespace ash {
-namespace internal {
-
-Shadow::Shadow() : style_(STYLE_ACTIVE) {
-}
-
-Shadow::~Shadow() {
-}
-
-void Shadow::Init(Style style) {
-  style_ = style;
-  image_grid_.reset(new ImageGrid);
-  UpdateImagesForStyle();
-  image_grid_->layer()->set_name("Shadow");
-  image_grid_->layer()->SetOpacity(GetOpacityForStyle(style_));
-}
-
-void Shadow::SetContentBounds(const gfx::Rect& content_bounds) {
-  content_bounds_ = content_bounds;
-  UpdateImageGridBounds();
-}
-
-ui::Layer* Shadow::layer() const {
-  return image_grid_->layer();
-}
-
-void Shadow::SetStyle(Style style) {
-  if (style_ == style)
-    return;
-
-  Style old_style = style_;
-  style_ = style;
-
-  // Stop waiting for any as yet unfinished implicit animations.
-  StopObservingImplicitAnimations();
-
-  // If we're switching to or from the small style, don't bother with
-  // animations.
-  if (style == STYLE_SMALL || old_style == STYLE_SMALL) {
-    UpdateImagesForStyle();
-    image_grid_->layer()->SetOpacity(GetOpacityForStyle(style));
-    return;
-  }
-
-  // If we're becoming active, switch images now.  Because the inactive image
-  // has a very low opacity the switch isn't noticeable and this approach
-  // allows us to use only a single set of shadow images at a time.
-  if (style == STYLE_ACTIVE) {
-    UpdateImagesForStyle();
-    // Opacity was baked into inactive image, start opacity low to match.
-    image_grid_->layer()->SetOpacity(kInactiveShadowOpacity);
-  }
-
-  {
-    // Property sets within this scope will be implicitly animated.
-    ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator());
-    settings.AddObserver(this);
-    settings.SetTransitionDuration(
-        base::TimeDelta::FromMilliseconds(kShadowAnimationDurationMs));
-    switch (style_) {
-      case STYLE_ACTIVE:
-        image_grid_->layer()->SetOpacity(kActiveShadowOpacity);
-        break;
-      case STYLE_INACTIVE:
-        image_grid_->layer()->SetOpacity(kInactiveShadowOpacity);
-        break;
-      default:
-        NOTREACHED() << "Unhandled style " << style_;
-        break;
-    }
-  }
-}
-
-void Shadow::OnImplicitAnimationsCompleted() {
-  // If we just finished going inactive, switch images.  This doesn't cause
-  // a visual pop because the inactive image opacity is so low.
-  if (style_ == STYLE_INACTIVE) {
-    UpdateImagesForStyle();
-    // Opacity is baked into inactive image, so set fully opaque.
-    image_grid_->layer()->SetOpacity(1.0f);
-  }
-}
-
-void Shadow::UpdateImagesForStyle() {
-  ResourceBundle& res = ResourceBundle::GetSharedInstance();
-  switch (style_) {
-    case STYLE_ACTIVE:
-      image_grid_->SetImages(
-          &res.GetImageNamed(IDR_AURA_SHADOW_ACTIVE_TOP_LEFT),
-          &res.GetImageNamed(IDR_AURA_SHADOW_ACTIVE_TOP),
-          &res.GetImageNamed(IDR_AURA_SHADOW_ACTIVE_TOP_RIGHT),
-          &res.GetImageNamed(IDR_AURA_SHADOW_ACTIVE_LEFT),
-          NULL,
-          &res.GetImageNamed(IDR_AURA_SHADOW_ACTIVE_RIGHT),
-          &res.GetImageNamed(IDR_AURA_SHADOW_ACTIVE_BOTTOM_LEFT),
-          &res.GetImageNamed(IDR_AURA_SHADOW_ACTIVE_BOTTOM),
-          &res.GetImageNamed(IDR_AURA_SHADOW_ACTIVE_BOTTOM_RIGHT));
-      break;
-    case STYLE_INACTIVE:
-      image_grid_->SetImages(
-          &res.GetImageNamed(IDR_AURA_SHADOW_INACTIVE_TOP_LEFT),
-          &res.GetImageNamed(IDR_AURA_SHADOW_INACTIVE_TOP),
-          &res.GetImageNamed(IDR_AURA_SHADOW_INACTIVE_TOP_RIGHT),
-          &res.GetImageNamed(IDR_AURA_SHADOW_INACTIVE_LEFT),
-          NULL,
-          &res.GetImageNamed(IDR_AURA_SHADOW_INACTIVE_RIGHT),
-          &res.GetImageNamed(IDR_AURA_SHADOW_INACTIVE_BOTTOM_LEFT),
-          &res.GetImageNamed(IDR_AURA_SHADOW_INACTIVE_BOTTOM),
-          &res.GetImageNamed(IDR_AURA_SHADOW_INACTIVE_BOTTOM_RIGHT));
-      break;
-    case STYLE_SMALL:
-      image_grid_->SetImages(
-          &res.GetImageNamed(IDR_WINDOW_BUBBLE_SHADOW_SMALL_TOP_LEFT),
-          &res.GetImageNamed(IDR_WINDOW_BUBBLE_SHADOW_SMALL_TOP),
-          &res.GetImageNamed(IDR_WINDOW_BUBBLE_SHADOW_SMALL_TOP_RIGHT),
-          &res.GetImageNamed(IDR_WINDOW_BUBBLE_SHADOW_SMALL_LEFT),
-          NULL,
-          &res.GetImageNamed(IDR_WINDOW_BUBBLE_SHADOW_SMALL_RIGHT),
-          &res.GetImageNamed(IDR_WINDOW_BUBBLE_SHADOW_SMALL_BOTTOM_LEFT),
-          &res.GetImageNamed(IDR_WINDOW_BUBBLE_SHADOW_SMALL_BOTTOM),
-          &res.GetImageNamed(IDR_WINDOW_BUBBLE_SHADOW_SMALL_BOTTOM_RIGHT));
-      break;
-    default:
-      NOTREACHED() << "Unhandled style " << style_;
-      break;
-  }
-
-  // Image sizes may have changed.
-  UpdateImageGridBounds();
-}
-
-void Shadow::UpdateImageGridBounds() {
-  // Update bounds based on content bounds and image sizes.
-  image_grid_->SetContentBounds(content_bounds_);
-}
-
-}  // namespace internal
-}  // namespace ash