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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/display_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "ui/display/types/display_snapshot.h"
namespace ui {
std::string DisplayPowerStateToString(chromeos::DisplayPowerState state) {
switch (state) {
case chromeos::DISPLAY_POWER_ALL_ON:
return "ALL_ON";
case chromeos::DISPLAY_POWER_ALL_OFF:
return "ALL_OFF";
case chromeos::DISPLAY_POWER_INTERNAL_OFF_EXTERNAL_ON:
return "INTERNAL_OFF_EXTERNAL_ON";
case chromeos::DISPLAY_POWER_INTERNAL_ON_EXTERNAL_OFF:
return "INTERNAL_ON_EXTERNAL_OFF";
default:
return "unknown (" + base::IntToString(state) + ")";
}
}
std::string MultipleDisplayStateToString(MultipleDisplayState state) {
switch (state) {
case MULTIPLE_DISPLAY_STATE_INVALID:
return "INVALID";
case MULTIPLE_DISPLAY_STATE_HEADLESS:
return "HEADLESS";
case MULTIPLE_DISPLAY_STATE_SINGLE:
return "SINGLE";
case MULTIPLE_DISPLAY_STATE_DUAL_MIRROR:
return "DUAL_MIRROR";
case MULTIPLE_DISPLAY_STATE_DUAL_EXTENDED:
return "DUAL_EXTENDED";
case MULTIPLE_DISPLAY_STATE_MULTI_EXTENDED:
return "MULTI_EXTENDED";
}
NOTREACHED() << "Unknown state " << state;
return "INVALID";
}
int GetDisplayPower(
const std::vector<DisplayConfigurator::DisplayState>& display_states,
chromeos::DisplayPowerState state,
std::vector<bool>* display_power) {
int num_on_displays = 0;
if (display_power)
display_power->resize(display_states.size());
for (size_t i = 0; i < display_states.size(); ++i) {
bool internal =
display_states[i].display->type() == DISPLAY_CONNECTION_TYPE_INTERNAL;
bool on =
state == chromeos::DISPLAY_POWER_ALL_ON ||
(state == chromeos::DISPLAY_POWER_INTERNAL_OFF_EXTERNAL_ON &&
!internal) ||
(state == chromeos::DISPLAY_POWER_INTERNAL_ON_EXTERNAL_OFF && internal);
if (display_power)
(*display_power)[i] = on;
if (on)
num_on_displays++;
}
return num_on_displays;
}
} // namespace ui
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