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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/display/chromeos/update_display_configuration_task.h"
#include "ui/display/chromeos/configure_displays_task.h"
#include "ui/display/chromeos/display_util.h"
#include "ui/display/types/display_snapshot.h"
#include "ui/display/types/native_display_delegate.h"
namespace ui {
UpdateDisplayConfigurationTask::UpdateDisplayConfigurationTask(
NativeDisplayDelegate* delegate,
DisplayConfigurator::DisplayLayoutManager* layout_manager,
MultipleDisplayState new_display_state,
chromeos::DisplayPowerState new_power_state,
int power_flags,
uint32_t background_color_argb,
bool force_configure,
const ResponseCallback& callback)
: delegate_(delegate),
layout_manager_(layout_manager),
new_display_state_(new_display_state),
new_power_state_(new_power_state),
power_flags_(power_flags),
background_color_argb_(background_color_argb),
force_configure_(force_configure),
callback_(callback),
force_dpms_(false),
weak_ptr_factory_(this) {
delegate_->GrabServer();
}
UpdateDisplayConfigurationTask::~UpdateDisplayConfigurationTask() {
delegate_->UngrabServer();
}
void UpdateDisplayConfigurationTask::Run() {
delegate_->GetDisplays(
base::Bind(&UpdateDisplayConfigurationTask::OnDisplaysUpdated,
weak_ptr_factory_.GetWeakPtr()));
}
void UpdateDisplayConfigurationTask::OnDisplaysUpdated(
const std::vector<DisplaySnapshot*>& displays) {
cached_displays_ = layout_manager_->ParseDisplays(displays);
if (cached_displays_.size() > 1 && background_color_argb_)
delegate_->SetBackgroundColor(background_color_argb_);
// If the user hasn't requested a display state, update it using the requested
// power state.
if (new_display_state_ == MULTIPLE_DISPLAY_STATE_INVALID)
new_display_state_ = ChooseDisplayState();
VLOG(1) << "OnDisplaysUpdated: new_display_state="
<< MultipleDisplayStateToString(new_display_state_)
<< " new_power_state=" << DisplayPowerStateToString(new_power_state_)
<< " flags=" << power_flags_
<< " force_configure=" << force_configure_
<< " display_count=" << cached_displays_.size();
// If there has been any change in the requested power state and the displays
// aren't being turned off force a change in DPMS state.
force_dpms_ = ShouldForceDpms() && ShouldConfigure();
if (ShouldConfigure()) {
EnterState(base::Bind(&UpdateDisplayConfigurationTask::OnStateEntered,
weak_ptr_factory_.GetWeakPtr()));
} else {
// If we don't have to configure then we're sticking with the old
// configuration. Update it such that it reflects in the reported value.
new_power_state_ = layout_manager_->GetPowerState();
FinishConfiguration(true);
}
}
void UpdateDisplayConfigurationTask::EnterState(
const ConfigureDisplaysTask::ResponseCallback& callback) {
VLOG(2) << "EnterState";
std::vector<DisplayConfigureRequest> requests;
if (!layout_manager_->GetDisplayLayout(cached_displays_, new_display_state_,
new_power_state_, &requests,
&framebuffer_size_)) {
callback.Run(ConfigureDisplaysTask::ERROR);
return;
}
if (!requests.empty()) {
delegate_->CreateFrameBuffer(framebuffer_size_);
configure_task_.reset(
new ConfigureDisplaysTask(delegate_, requests, callback));
configure_task_->Run();
} else {
VLOG(2) << "No displays";
callback.Run(ConfigureDisplaysTask::SUCCESS);
}
}
void UpdateDisplayConfigurationTask::OnStateEntered(
ConfigureDisplaysTask::Status status) {
bool success = status != ConfigureDisplaysTask::ERROR;
if (new_display_state_ == MULTIPLE_DISPLAY_STATE_DUAL_MIRROR &&
status == ConfigureDisplaysTask::PARTIAL_SUCCESS)
success = false;
if (layout_manager_->GetSoftwareMirroringController()) {
bool enable_software_mirroring = false;
if (!success && new_display_state_ == MULTIPLE_DISPLAY_STATE_DUAL_MIRROR) {
if (layout_manager_->GetDisplayState() !=
MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED ||
layout_manager_->GetPowerState() != new_power_state_) {
new_display_state_ = MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED;
EnterState(base::Bind(
&UpdateDisplayConfigurationTask::OnEnableSoftwareMirroring,
weak_ptr_factory_.GetWeakPtr()));
return;
}
success = layout_manager_->GetDisplayState() ==
MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED;
enable_software_mirroring = success;
if (success)
new_display_state_ = MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED;
}
layout_manager_->GetSoftwareMirroringController()->SetSoftwareMirroring(
enable_software_mirroring);
}
FinishConfiguration(success);
}
void UpdateDisplayConfigurationTask::OnEnableSoftwareMirroring(
ConfigureDisplaysTask::Status status) {
bool success = status != ConfigureDisplaysTask::ERROR;
layout_manager_->GetSoftwareMirroringController()->SetSoftwareMirroring(
success);
FinishConfiguration(success);
}
void UpdateDisplayConfigurationTask::FinishConfiguration(bool success) {
if (success && force_dpms_)
delegate_->ForceDPMSOn();
callback_.Run(success, cached_displays_, framebuffer_size_,
new_display_state_, new_power_state_);
}
bool UpdateDisplayConfigurationTask::ShouldForceDpms() const {
return new_power_state_ != chromeos::DISPLAY_POWER_ALL_OFF &&
(layout_manager_->GetPowerState() != new_power_state_ ||
(power_flags_ & DisplayConfigurator::kSetDisplayPowerForceProbe));
}
bool UpdateDisplayConfigurationTask::ShouldConfigure() const {
if (force_configure_)
return true;
if (cached_displays_.size() == 1 &&
cached_displays_[0].display->type() == DISPLAY_CONNECTION_TYPE_INTERNAL)
return true;
if (!(power_flags_ &
DisplayConfigurator::kSetDisplayPowerOnlyIfSingleInternalDisplay))
return true;
if (new_display_state_ != layout_manager_->GetDisplayState())
return true;
return false;
}
MultipleDisplayState UpdateDisplayConfigurationTask::ChooseDisplayState()
const {
int num_on_displays =
GetDisplayPower(cached_displays_, new_power_state_, NULL);
switch (cached_displays_.size()) {
case 0:
return MULTIPLE_DISPLAY_STATE_HEADLESS;
case 1:
return MULTIPLE_DISPLAY_STATE_SINGLE;
default: {
if (num_on_displays == 1) {
// If only one display is currently turned on, return the "single"
// state so that its native mode will be used.
return MULTIPLE_DISPLAY_STATE_SINGLE;
}
if (num_on_displays >= 3) {
return MULTIPLE_DISPLAY_STATE_MULTI_EXTENDED;
} else if (cached_displays_.size() == 2) {
if (!layout_manager_->GetStateController())
return MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED;
// With either both displays on or both displays off, use one of the
// dual modes.
std::vector<int64_t> display_ids;
for (size_t i = 0; i < cached_displays_.size(); ++i)
display_ids.push_back(cached_displays_[i].display->display_id());
return layout_manager_->GetStateController()->GetStateForDisplayIds(
display_ids);
}
NOTREACHED();
}
}
return MULTIPLE_DISPLAY_STATE_INVALID;
}
} // namespace ui
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