ash/wm/overview/scoped_overview_animation_settings.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ash/wm/overview/scoped_overview_animation_settings.h"
   6
   7 #include "ash/wm/overview/overview_animation_type.h"
   8 #include "base/time/time.h"
   9 #include "ui/aura/window.h"
  10 #include "ui/compositor/layer.h"
  11 #include "ui/gfx/animation/tween.h"
  12
  13 namespace ash {
  14
  15 namespace {
  16
  17 // The time duration for transformation animations.
  18 const int kTransitionMilliseconds = 200;
  19
  20 // The time duration for widgets to fade in.
  21 const int kFadeInMilliseconds = 80;
  22
  23 // The time duration for widgets to fade out.
  24 const int kFadeOutMilliseconds = 100;
  25
  26 base::TimeDelta GetAnimationDuration(OverviewAnimationType animation_type) {
  27   switch (animation_type) {
  28     case OVERVIEW_ANIMATION_NONE:
  29     case OVERVIEW_ANIMATION_SCROLL_SELECTOR_ITEM:
  30       return base::TimeDelta();
  31     case OVERVIEW_ANIMATION_ENTER_OVERVIEW_MODE_FADE_IN:
  32       return base::TimeDelta::FromMilliseconds(kFadeInMilliseconds);
  33     case OVERVIEW_ANIMATION_ENTER_OVERVIEW_MODE_FADE_OUT:
  34       return base::TimeDelta::FromMilliseconds(kFadeOutMilliseconds);
  35     case OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS:
  36     case OVERVIEW_ANIMATION_RESTORE_WINDOW:
  37     case OVERVIEW_ANIMATION_HIDE_WINDOW:
  38     case OVERVIEW_ANIMATION_CANCEL_SELECTOR_ITEM_SCROLL:
  39       return base::TimeDelta::FromMilliseconds(kTransitionMilliseconds);
  40   }
  41   NOTREACHED();
  42   return base::TimeDelta();
  43 }
  44
  45 }  // namespace
  46
  47 ScopedOverviewAnimationSettings::ScopedOverviewAnimationSettings(
  48     OverviewAnimationType animation_type,
  49     aura::Window* window)
  50     : animation_settings_(window->layer()->GetAnimator()) {
  51
  52   switch (animation_type) {
  53     case OVERVIEW_ANIMATION_NONE:
  54     case OVERVIEW_ANIMATION_SCROLL_SELECTOR_ITEM:
  55       animation_settings_.SetPreemptionStrategy(
  56           ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
  57       break;
  58     case OVERVIEW_ANIMATION_ENTER_OVERVIEW_MODE_FADE_IN:
  59       window->layer()->GetAnimator()->SchedulePauseForProperties(
  60           GetAnimationDuration(
  61               OverviewAnimationType::OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS),
  62           ui::LayerAnimationElement::OPACITY);
  63       animation_settings_.SetPreemptionStrategy(
  64           ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
  65       break;
  66     case OVERVIEW_ANIMATION_ENTER_OVERVIEW_MODE_FADE_OUT:
  67       animation_settings_.SetPreemptionStrategy(
  68           ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
  69       break;
  70     case OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS:
  71     case OVERVIEW_ANIMATION_RESTORE_WINDOW:
  72       animation_settings_.SetPreemptionStrategy(
  73           ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
  74       animation_settings_.SetTweenType(gfx::Tween::FAST_OUT_SLOW_IN);
  75       break;
  76     case OVERVIEW_ANIMATION_HIDE_WINDOW:
  77       animation_settings_.SetPreemptionStrategy(
  78           ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
  79       break;
  80     case OVERVIEW_ANIMATION_CANCEL_SELECTOR_ITEM_SCROLL:
  81       animation_settings_.SetPreemptionStrategy(
  82           ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
  83       animation_settings_.SetTweenType(gfx::Tween::EASE_IN_OUT);
  84       break;
  85   }
  86   animation_settings_.SetTransitionDuration(
  87       GetAnimationDuration(animation_type));
  88 }
  89
  90 ScopedOverviewAnimationSettings::~ScopedOverviewAnimationSettings() {
  91 }
  92
  93 }  // namespace ash