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// Copyright 2014 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 "ui/app_list/views/folder_background_view.h"
#include "ui/app_list/app_list_constants.h"
#include "ui/app_list/views/app_list_folder_view.h"
#include "ui/app_list/views/apps_container_view.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/transform_util.h"
namespace app_list {
namespace {
const float kFolderInkBubbleScale = 1.2f;
const int kBubbleTransitionDurationMs = 200;
} // namespace
FolderBackgroundView::FolderBackgroundView()
: folder_view_(NULL),
show_state_(NO_BUBBLE) {
SetPaintToLayer(true);
SetFillsBoundsOpaquely(false);
}
FolderBackgroundView::~FolderBackgroundView() {
}
void FolderBackgroundView::UpdateFolderContainerBubble(ShowState state) {
if (show_state_ == state ||
(state == HIDE_BUBBLE && show_state_ == NO_BUBBLE)) {
return;
}
show_state_ = state;
// Set the initial state before the animation starts.
const gfx::Rect bounds(layer()->bounds().size());
gfx::Transform transform =
gfx::GetScaleTransform(bounds.CenterPoint(), kFolderInkBubbleScale);
if (show_state_ == SHOW_BUBBLE) {
layer()->SetOpacity(0.0f);
layer()->SetTransform(transform);
} else {
layer()->SetOpacity(1.0f);
layer()->SetTransform(gfx::Transform());
}
ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator());
settings.AddObserver(this);
settings.SetTransitionDuration(
base::TimeDelta::FromMilliseconds((kBubbleTransitionDurationMs)));
if (show_state_ == SHOW_BUBBLE) {
settings.SetTweenType(gfx::Tween::LINEAR_OUT_SLOW_IN);
layer()->SetOpacity(1.0f);
layer()->SetTransform(gfx::Transform());
} else {
settings.SetTweenType(gfx::Tween::FAST_OUT_LINEAR_IN);
layer()->SetOpacity(0.0f);
layer()->SetTransform(transform);
}
SchedulePaint();
}
int FolderBackgroundView::GetFolderContainerBubbleRadius() const {
return GetContentsBounds().height() / 2;
}
void FolderBackgroundView::OnPaint(gfx::Canvas* canvas) {
if (show_state_ == NO_BUBBLE)
return;
// Draw ink bubble that shows the folder boundary.
SkPaint paint;
paint.setStyle(SkPaint::kFill_Style);
paint.setAntiAlias(true);
paint.setColor(kFolderBubbleColor);
canvas->DrawCircle(GetContentsBounds().CenterPoint(),
GetFolderContainerBubbleRadius(),
paint);
}
void FolderBackgroundView::OnImplicitAnimationsCompleted() {
// Show folder name after the ink bubble disappears.
if (show_state_ == HIDE_BUBBLE) {
static_cast<AppsContainerView*>(parent())->app_list_folder_view()->
UpdateFolderNameVisibility(true);
}
}
} // namespace app_list
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