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/*
* SPDX-FileCopyrightText: 2025 Micah Stanley <stanleymicah@proton.me>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "rotationutil.h"
#include <QDBusConnection>
#include <QDBusPendingReply>
#include <QDebug>
#include <QGuiApplication>
#include <kscreen/configmonitor.h>
#include <kscreen/getconfigoperation.h>
#include <kscreen/output.h>
#include <kscreen/setconfigoperation.h>
#include <qtmetamacros.h>
KScreen::Output::Rotation mapReadingOrientation(QOrientationReading::Orientation orientation)
{
switch (orientation) {
case QOrientationReading::Orientation::TopUp:
return KScreen::Output::Rotation::None;
case QOrientationReading::Orientation::TopDown:
return KScreen::Output::Rotation::Inverted;
case QOrientationReading::Orientation::LeftUp:
return KScreen::Output::Rotation::Left;
case QOrientationReading::Orientation::RightUp:
return KScreen::Output::Rotation::Right;
case QOrientationReading::Orientation::FaceUp:
case QOrientationReading::Orientation::FaceDown:
case QOrientationReading::Orientation::Undefined:
return KScreen::Output::Rotation::None;
}
return KScreen::Output::Rotation::None;
}
RotationUtil::Rotation mapRotation(KScreen::Output::Rotation rotation)
{
switch (rotation) {
case KScreen::Output::Rotation::Left:
return RotationUtil::Rotation::LandscapeLeft;
case KScreen::Output::Rotation::Inverted:
return RotationUtil::Rotation::UpsideDown;
case KScreen::Output::Rotation::Right:
return RotationUtil::Rotation::LandscapeRight;
default:
return RotationUtil::Rotation::Portrait;
}
}
RotationUtil::RotationUtil(QObject *parent)
: QObject{parent}
, m_sensor{new QOrientationSensor(this)}
{
retrieveKScreen();
connect(m_sensor, &QOrientationSensor::readingChanged, this, &RotationUtil::updateShowRotationButton);
m_sensor->start();
}
void RotationUtil::retrieveKScreen()
{
connect(new KScreen::GetConfigOperation(), &KScreen::GetConfigOperation::finished, this, [this](auto *op) {
m_config = qobject_cast<KScreen::GetConfigOperation *>(op)->config();
if (!m_config) {
qDebug() << "RotationUtil: Failed to get kscreen config, attempting again";
retrieveKScreen();
return;
}
KScreen::ConfigMonitor::instance()->addConfig(m_config);
// update all screens with event connect
for (KScreen::OutputPtr output : m_config->outputs()) {
connect(output.data(), &KScreen::Output::autoRotatePolicyChanged, this, &RotationUtil::updateShowRotationButton);
}
// listen to all new screens and connect
connect(m_config.data(), &KScreen::Config::outputAdded, this, [this](const auto &output) {
connect(output.data(), &KScreen::Output::autoRotatePolicyChanged, this, &RotationUtil::updateShowRotationButton);
});
});
}
void RotationUtil::rotateToSuggestedRotation()
{
if (!m_config || !m_showRotationButton) {
return;
}
const auto outputs = m_config->outputs();
if (outputs.empty()) {
return;
}
// HACK: Assume the output we care about is the first device
for (KScreen::OutputPtr output : outputs) {
// apparently it's possible to get nullptr outputs?
if (!output) {
continue;
}
output->setRotation(m_rotateTo);
}
auto setop = new KScreen::SetConfigOperation(m_config, this);
connect(setop, &KScreen::SetConfigOperation::finished, this, [this]() {
updateShowRotationButton();
});
}
bool RotationUtil::showRotationButton() const
{
return m_showRotationButton;
}
RotationUtil::Rotation RotationUtil::deviceRotation() const
{
return m_deviceRotation;
}
RotationUtil::Rotation RotationUtil::currentRotation() const
{
return m_currentRotation;
}
void RotationUtil::updateShowRotationButton()
{
if (!m_config) {
return;
}
QOrientationReading *reading = m_sensor->reading();
if (!reading) {
return;
}
m_rotateTo = mapReadingOrientation(reading->orientation());
m_deviceRotation = mapRotation(m_rotateTo);
const auto outputs = m_config->outputs();
if (outputs.empty()) {
m_showRotationButton = false;
Q_EMIT rotationChanged();
return;
}
// HACK: Assume the output we care about is the first device
for (KScreen::OutputPtr output : outputs) {
if (!output) {
// apparently it's possible to get nullptr outputs?
continue;
}
if (output->autoRotatePolicy() != KScreen::Output::AutoRotatePolicy::Never) {
// only check displays that have autorotate on
continue;
}
m_currentRotation = mapRotation(output->rotation());
m_showRotationButton = output->rotation() != m_rotateTo;
Q_EMIT rotationChanged();
return;
}
m_showRotationButton = false;
Q_EMIT rotationChanged();
}
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