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// Copyright 2016 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/display_configuration_controller.h"
#include "ash/display/display_animator.h"
#include "ash/display/display_layout.h"
#include "ash/display/display_manager.h"
#include "ash/rotator/screen_rotation_animator.h"
#include "ash/screen_util.h"
#include "base/time/time.h"
#if defined(OS_CHROMEOS)
#include "ash/display/display_animator_chromeos.h"
#include "base/sys_info.h"
#endif
namespace {
// Specifies how long the display change should have been disabled
// after each display change operations.
// |kCycleDisplayThrottleTimeoutMs| is set to be longer to avoid
// changing the settings while the system is still configurating
// displays. It will be overriden by |kAfterDisplayChangeThrottleTimeoutMs|
// when the display change happens, so the actual timeout is much shorter.
const int64_t kAfterDisplayChangeThrottleTimeoutMs = 500;
const int64_t kCycleDisplayThrottleTimeoutMs = 4000;
const int64_t kSetPrimaryDisplayThrottleTimeoutMs = 500;
} // namespace
namespace ash {
class DisplayConfigurationController::DisplayChangeLimiter {
public:
DisplayChangeLimiter() : throttle_timeout_(base::Time::Now()) {}
void SetThrottleTimeout(int64_t throttle_ms) {
throttle_timeout_ =
base::Time::Now() + base::TimeDelta::FromMilliseconds(throttle_ms);
}
bool IsThrottled() const { return base::Time::Now() < throttle_timeout_; }
private:
base::Time throttle_timeout_;
DISALLOW_COPY_AND_ASSIGN(DisplayChangeLimiter);
};
DisplayConfigurationController::DisplayConfigurationController(
DisplayManager* display_manager,
WindowTreeHostManager* window_tree_host_manager)
: display_manager_(display_manager),
window_tree_host_manager_(window_tree_host_manager),
weak_ptr_factory_(this) {
window_tree_host_manager_->AddObserver(this);
#if defined(OS_CHROMEOS)
if (base::SysInfo::IsRunningOnChromeOS())
limiter_.reset(new DisplayChangeLimiter);
display_animator_.reset(new DisplayAnimatorChromeOS());
#endif
}
DisplayConfigurationController::~DisplayConfigurationController() {
window_tree_host_manager_->RemoveObserver(this);
}
void DisplayConfigurationController::SetDisplayLayout(
scoped_ptr<DisplayLayout> layout,
bool user_action) {
if (user_action && display_animator_) {
display_animator_->StartFadeOutAnimation(
base::Bind(&DisplayConfigurationController::SetDisplayLayoutImpl,
weak_ptr_factory_.GetWeakPtr(), base::Passed(&layout)));
} else {
SetDisplayLayoutImpl(std::move(layout));
}
}
void DisplayConfigurationController::SetMirrorMode(bool mirror,
bool user_action) {
if (display_manager_->num_connected_displays() <= 1 ||
display_manager_->IsInMirrorMode() == mirror || IsLimited()) {
return;
}
SetThrottleTimeout(kCycleDisplayThrottleTimeoutMs);
if (user_action && display_animator_) {
display_animator_->StartFadeOutAnimation(
base::Bind(&DisplayConfigurationController::SetMirrorModeImpl,
weak_ptr_factory_.GetWeakPtr(), mirror));
} else {
SetMirrorModeImpl(mirror);
}
}
void DisplayConfigurationController::SetDisplayRotation(
int64_t display_id,
gfx::Display::Rotation rotation,
gfx::Display::RotationSource source,
bool user_action) {
ash::ScreenRotationAnimator screen_rotation_animator(display_id);
if (user_action && screen_rotation_animator.CanAnimate())
screen_rotation_animator.Rotate(rotation, source);
else
display_manager_->SetDisplayRotation(display_id, rotation, source);
}
void DisplayConfigurationController::SetPrimaryDisplayId(int64_t display_id,
bool user_action) {
if (display_manager_->GetNumDisplays() <= 1 || IsLimited())
return;
SetThrottleTimeout(kSetPrimaryDisplayThrottleTimeoutMs);
if (user_action && display_animator_) {
display_animator_->StartFadeOutAnimation(
base::Bind(&DisplayConfigurationController::SetPrimaryDisplayIdImpl,
weak_ptr_factory_.GetWeakPtr(), display_id));
} else {
SetPrimaryDisplayIdImpl(display_id);
}
}
void DisplayConfigurationController::OnDisplayConfigurationChanged() {
// TODO(oshima): Stop all animations.
SetThrottleTimeout(kAfterDisplayChangeThrottleTimeoutMs);
}
// Protected
void DisplayConfigurationController::ResetAnimatorForTest() {
if (!display_animator_)
return;
display_animator_.reset();
}
// Private
void DisplayConfigurationController::SetThrottleTimeout(int64_t throttle_ms) {
if (limiter_)
limiter_->SetThrottleTimeout(throttle_ms);
}
bool DisplayConfigurationController::IsLimited() {
return limiter_ && limiter_->IsThrottled();
}
void DisplayConfigurationController::SetDisplayLayoutImpl(
scoped_ptr<DisplayLayout> layout) {
// TODO(oshima/stevenjb): Add support for 3+ displays.
display_manager_->SetLayoutForCurrentDisplays(std::move(layout));
if (display_animator_)
display_animator_->StartFadeInAnimation();
}
void DisplayConfigurationController::SetMirrorModeImpl(bool mirror) {
display_manager_->SetMirrorMode(mirror);
if (display_animator_)
display_animator_->StartFadeInAnimation();
}
void DisplayConfigurationController::SetPrimaryDisplayIdImpl(
int64_t display_id) {
window_tree_host_manager_->SetPrimaryDisplayId(display_id);
if (display_animator_)
display_animator_->StartFadeInAnimation();
}
} // namespace ash
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