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Issue 2030593002: Renames ash/wm/common into ash/common/wm (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 6 months ago
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1 // Copyright (c) 2012 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/common/background_animator.h"
6
7 namespace ash {
8 namespace {
9
10 // Duration of the background animation.
11 const int kBackgroundDurationMS = 1000;
12 }
13
14 BackgroundAnimator::BackgroundAnimator(BackgroundAnimatorDelegate* delegate,
15 int min_alpha,
16 int max_alpha)
17 : delegate_(delegate),
18 min_alpha_(min_alpha),
19 max_alpha_(max_alpha),
20 animation_(this),
21 paints_background_(false),
22 alpha_(min_alpha) {
23 animation_.SetSlideDuration(kBackgroundDurationMS);
24 }
25
26 BackgroundAnimator::~BackgroundAnimator() {}
27
28 void BackgroundAnimator::SetDuration(int time_in_ms) {
29 animation_.SetSlideDuration(time_in_ms);
30 }
31
32 void BackgroundAnimator::SetPaintsBackground(
33 bool value,
34 BackgroundAnimatorChangeType type) {
35 if (paints_background_ == value)
36 return;
37 paints_background_ = value;
38 if (type == BACKGROUND_CHANGE_IMMEDIATE && !animation_.is_animating()) {
39 animation_.Reset(value ? 1.0f : 0.0f);
40 AnimationProgressed(&animation_);
41 return;
42 }
43 if (paints_background_)
44 animation_.Show();
45 else
46 animation_.Hide();
47 }
48
49 void BackgroundAnimator::AnimationProgressed(const gfx::Animation* animation) {
50 int alpha = animation->CurrentValueBetween(min_alpha_, max_alpha_);
51 if (alpha_ == alpha)
52 return;
53 alpha_ = alpha;
54 delegate_->UpdateBackground(alpha_);
55 }
56
57 } // namespace ash
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