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// 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/display/shared_display_edge_indicator.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/wm/coordinate_conversion.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/aura/client/screen_position_client.h"
#include "ui/aura/root_window.h"
#include "ui/gfx/animation/throb_animation.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/display.h"
#include "ui/gfx/screen.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
namespace ash {
namespace internal {
namespace {
const int kIndicatorAnimationDurationMs = 1000;
class IndicatorView : public views::View {
public:
IndicatorView() {
}
virtual ~IndicatorView() {
}
void SetColor(SkColor color) {
color_ = color;
SchedulePaint();
}
// views::Views overrides:
virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
canvas->FillRect(gfx::Rect(bounds().size()), color_);
}
private:
SkColor color_;
DISALLOW_COPY_AND_ASSIGN(IndicatorView);
};
views::Widget* CreateWidget(const gfx::Rect& bounds,
views::View* contents_view) {
views::Widget* widget = new views::Widget;
views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
params.can_activate = false;
params.keep_on_top = true;
// We set the context to the primary root window; this is OK because the ash
// stacking controller will still place us in the correct RootWindow.
params.context = Shell::GetPrimaryRootWindow();
widget->set_focus_on_creation(false);
widget->Init(params);
widget->SetVisibilityChangedAnimationsEnabled(false);
widget->GetNativeWindow()->SetName("SharedEdgeIndicator");
widget->SetContentsView(contents_view);
gfx::Display display = Shell::GetScreen()->GetDisplayMatching(bounds);
aura::Window* window = widget->GetNativeWindow();
aura::client::ScreenPositionClient* screen_position_client =
aura::client::GetScreenPositionClient(window->GetRootWindow());
screen_position_client->SetBounds(window, bounds, display);
widget->Show();
return widget;
}
} // namespace
SharedDisplayEdgeIndicator::SharedDisplayEdgeIndicator()
: src_indicator_(NULL),
dst_indicator_(NULL) {
}
SharedDisplayEdgeIndicator::~SharedDisplayEdgeIndicator() {
Hide();
}
void SharedDisplayEdgeIndicator::Show(const gfx::Rect& src_bounds,
const gfx::Rect& dst_bounds) {
DCHECK(!src_indicator_);
DCHECK(!dst_indicator_);
src_indicator_ = new IndicatorView;
dst_indicator_ = new IndicatorView;
CreateWidget(src_bounds, src_indicator_);
CreateWidget(dst_bounds, dst_indicator_);
animation_.reset(new gfx::ThrobAnimation(this));
animation_->SetThrobDuration(kIndicatorAnimationDurationMs);
animation_->StartThrobbing(-1 /* infinite */);
}
void SharedDisplayEdgeIndicator::Hide() {
if (src_indicator_)
src_indicator_->GetWidget()->Close();
src_indicator_ = NULL;
if (dst_indicator_)
dst_indicator_->GetWidget()->Close();
dst_indicator_ = NULL;
}
void SharedDisplayEdgeIndicator::AnimationProgressed(
const gfx::Animation* animation) {
int value = animation->CurrentValueBetween(0, 255);
SkColor color = SkColorSetARGB(0xFF, value, value, value);
if (src_indicator_)
static_cast<IndicatorView*>(src_indicator_)->SetColor(color);
if (dst_indicator_)
static_cast<IndicatorView*>(dst_indicator_)->SetColor(color);
}
} // namespace internal
} // namespace ash
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