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.
5 #include "ui/app_list/views/top_icon_animation_view.h"
7 #include "base/message_loop/message_loop_proxy.h"
8 #include "ui/app_list/app_list_constants.h"
9 #include "ui/compositor/scoped_layer_animation_settings.h"
10 #include "ui/gfx/image/image_skia_operations.h"
11 #include "ui/views/controls/image_view.h"
15 TopIconAnimationView::TopIconAnimationView(const gfx::ImageSkia
& icon
,
16 const gfx::Rect
& scaled_rect
,
18 : icon_size_(kGridIconDimension
, kGridIconDimension
),
19 icon_(new views::ImageView
),
20 scaled_rect_(scaled_rect
),
21 open_folder_(open_folder
) {
22 DCHECK(!icon
.isNull());
23 gfx::ImageSkia
resized(gfx::ImageSkiaOperations::CreateResizedImage(
25 skia::ImageOperations::RESIZE_BEST
, icon_size_
));
26 icon_
->SetImage(resized
);
29 SetPaintToLayer(true);
30 SetFillsBoundsOpaquely(false);
33 TopIconAnimationView::~TopIconAnimationView() {
34 // Required due to RequiresNotificationWhenAnimatorDestroyed() returning true.
35 // See ui::LayerAnimationObserver for details.
36 StopObservingImplicitAnimations();
39 void TopIconAnimationView::AddObserver(TopIconAnimationObserver
* observer
) {
40 observers_
.AddObserver(observer
);
43 void TopIconAnimationView::RemoveObserver(TopIconAnimationObserver
* observer
) {
44 observers_
.RemoveObserver(observer
);
47 void TopIconAnimationView::TransformView() {
48 // This view will delete itself on animation completion.
49 set_owned_by_client();
51 // Transform used for scaling down the icon and move it back inside to the
52 // original folder icon.
53 const float kIconTransformScale
= 0.33333f
;
54 gfx::Transform transform
;
55 transform
.Translate(scaled_rect_
.x() - layer()->bounds().x(),
56 scaled_rect_
.y() - layer()->bounds().y());
57 transform
.Scale(kIconTransformScale
, kIconTransformScale
);
60 // Transform to a scaled down icon inside the original folder icon.
61 layer()->SetTransform(transform
);
64 // Animate the icon to its target location and scale when opening or
66 ui::ScopedLayerAnimationSettings
settings(layer()->GetAnimator());
67 settings
.AddObserver(this);
68 settings
.SetTweenType(gfx::Tween::FAST_OUT_SLOW_IN
);
69 settings
.SetTransitionDuration(
70 base::TimeDelta::FromMilliseconds(kFolderTransitionInDurationMs
));
71 layer()->SetTransform(open_folder_
? gfx::Transform() : transform
);
74 gfx::Size
TopIconAnimationView::GetPreferredSize() const {
78 void TopIconAnimationView::Layout() {
79 icon_
->SetBoundsRect(GetContentsBounds());
82 void TopIconAnimationView::OnImplicitAnimationsCompleted() {
84 FOR_EACH_OBSERVER(TopIconAnimationObserver
,
86 OnTopIconAnimationsComplete());
87 base::MessageLoopProxy::current()->DeleteSoon(FROM_HERE
, this);
90 bool TopIconAnimationView::RequiresNotificationWhenAnimatorDestroyed() const {
94 } // namespace app_list