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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/wm/screen_dimmer.h"
#include "ash/shell.h"
#include "ash/wm/dim_window.h"
#include "base/time/time.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_property.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
DECLARE_WINDOW_PROPERTY_TYPE(ash::ScreenDimmer*);
namespace ash {
namespace {
DEFINE_OWNED_WINDOW_PROPERTY_KEY(ScreenDimmer, kScreenDimmerKey, nullptr);
// Opacity when it's dimming the entire screen.
const float kDimmingLayerOpacityForRoot = 0.4f;
const int kRootWindowMagicId = -100;
std::vector<aura::Window*> GetAllContainers(int container_id) {
return container_id == kRootWindowMagicId
? Shell::GetAllRootWindows()
: Shell::GetContainersFromAllRootWindows(container_id, nullptr);
}
} // namespace
// static
ScreenDimmer* ScreenDimmer::GetForContainer(int container_id) {
aura::Window* primary_container = FindContainer(container_id);
ScreenDimmer* dimmer = primary_container->GetProperty(kScreenDimmerKey);
if (!dimmer) {
dimmer = new ScreenDimmer(container_id);
primary_container->SetProperty(kScreenDimmerKey, dimmer);
}
return dimmer;
}
// static
ScreenDimmer* ScreenDimmer::GetForRoot() {
ScreenDimmer* dimmer = GetForContainer(kRootWindowMagicId);
// Root window's dimmer
dimmer->target_opacity_ = kDimmingLayerOpacityForRoot;
return dimmer;
}
ScreenDimmer::ScreenDimmer(int container_id)
: container_id_(container_id),
target_opacity_(0.5f),
is_dimming_(false),
at_bottom_(false) {
Shell::GetInstance()->AddShellObserver(this);
}
ScreenDimmer::~ScreenDimmer() {
Shell::GetInstance()->RemoveShellObserver(this);
}
void ScreenDimmer::SetDimming(bool should_dim) {
if (should_dim == is_dimming_)
return;
is_dimming_ = should_dim;
Update(should_dim);
}
ScreenDimmer* ScreenDimmer::FindForTest(int container_id) {
return FindContainer(container_id)->GetProperty(kScreenDimmerKey);
}
// static
aura::Window* ScreenDimmer::FindContainer(int container_id) {
aura::Window* primary = Shell::GetPrimaryRootWindow();
return container_id == kRootWindowMagicId
? primary
: primary->GetChildById(container_id);
}
void ScreenDimmer::OnRootWindowAdded(aura::Window* root_window) {
Update(is_dimming_);
}
void ScreenDimmer::Update(bool should_dim) {
for (aura::Window* container : GetAllContainers(container_id_)) {
DimWindow* dim = DimWindow::Get(container);
if (should_dim) {
if (!dim) {
dim = new DimWindow(container);
dim->SetDimOpacity(target_opacity_);
}
if (at_bottom_)
dim->parent()->StackChildAtBottom(dim);
else
dim->parent()->StackChildAtTop(dim);
dim->Show();
} else {
if (dim) {
dim->Hide();
delete dim;
}
}
}
}
} // namespace ash
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