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/*
* Copyright © 2014-2015 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "mir_screen.h"
#include <mir/compositor/compositor.h>
#include <mir/graphics/display.h>
#include <mir/graphics/display_configuration.h>
#include <mir/log.h>
#include <mir/report_exception.h>
#include <cstdio>
#include <sstream>
#include <assert.h>
#include "server.h"
namespace mi = mir::input;
namespace mg = mir::graphics;
namespace
{
void log_exception_in(char const* const func)
{
static char const* const warning_format = "%s failed: %s";
std::stringstream buffer;
mir::report_exception(buffer);
mir::log(::mir::logging::Severity::warning, "usc::MirScreen", warning_format, func, buffer.str().c_str());
}
}
usc::MirScreen::MirScreen(
std::shared_ptr<mir::compositor::Compositor> const& compositor,
std::shared_ptr<mir::graphics::Display> const& display)
: compositor{compositor},
display{display},
current_power_mode{MirPowerMode::mir_power_mode_on}
{
try
{
/*
* Make sure the compositor is running as certain conditions can
* cause Mir to tear down the compositor threads before we get
* to this point. See bug #1410381.
*/
compositor->start();
}
catch (...)
{
log_exception_in(__func__);
throw;
}
}
usc::MirScreen::~MirScreen() = default;
void usc::MirScreen::turn_on()
{
set_power_mode(MirPowerMode::mir_power_mode_on);
}
void usc::MirScreen::turn_off()
{
set_power_mode(MirPowerMode::mir_power_mode_off);
}
void usc::MirScreen::set_power_mode(MirPowerMode mode)
try
{
if (current_power_mode == mode)
return;
std::shared_ptr<mg::DisplayConfiguration> displayConfig = display->configuration();
displayConfig->for_each_output(
[&](const mg::UserDisplayConfigurationOutput displayConfigOutput) {
displayConfigOutput.power_mode = mode;
}
);
compositor->stop();
display->configure(*displayConfig.get());
if (mode == MirPowerMode::mir_power_mode_on)
compositor->start();
current_power_mode = mode;
}
catch (std::exception const&)
{
log_exception_in(__func__);
}
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