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kwin/kcmkwin/kwincompositing/main.cpp
Vlad Zahorodnii 1fb9f6f13a Switch to SPDX license markers 
The main advantage of SPDX license identifiers over the traditional
license headers is that it's more difficult to overlook inappropriate
licenses for kwin, for example GPL 3. We also don't have to copy a
lot of boilerplate text.

In order to create this change, I ran licensedigger -r -c from the
toplevel source directory.
2020-08-07 19:57:56 +00:00

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/**************************************************************************
* KWin - the KDE window manager *
* This file is part of the KDE project. *
* *
* SPDX-FileCopyrightText: 2013 Antonis Tsiapaliokas <kok3rs@gmail.com> *
* SPDX-FileCopyrightText: 2013 Martin Gräßlin <mgraesslin@kde.org> *
* *
* SPDX-License-Identifier: GPL-2.0-or-later
**************************************************************************/
#include "ui_compositing.h"
#include <kwin_compositing_interface.h>
#include <QAction>
#include <QApplication>
#include <QLayout>
#include <kcmodule.h>
#include <kservice.h>
#include <algorithm>
#include <functional>
#include "kwincompositing_setting.h"
static bool isRunningPlasma()
{
return qgetenv("XDG_CURRENT_DESKTOP") == "KDE";
}
class KWinCompositingKCM : public KCModule
{
Q_OBJECT
public:
enum CompositingTypeIndex {
OPENGL31_INDEX = 0,
OPENGL20_INDEX,
XRENDER_INDEX
};
explicit KWinCompositingKCM(QWidget *parent = nullptr, const QVariantList &args = QVariantList());
public Q_SLOTS:
void load() override;
void save() override;
void defaults() override;
private Q_SLOTS:
void onBackendChanged();
void reenableGl();
private:
void init();
void updateUnmanagedItemStatus();
bool compositingRequired() const;
Ui_CompositingForm m_form;
OrgKdeKwinCompositingInterface *m_compositingInterface;
KWinCompositingSetting *m_settings;
};
static const QVector<qreal> s_animationMultipliers = {8, 4, 2, 1, 0.5, 0.25, 0.125, 0};
bool KWinCompositingKCM::compositingRequired() const
{
return m_compositingInterface->platformRequiresCompositing();
}
KWinCompositingKCM::KWinCompositingKCM(QWidget *parent, const QVariantList &args)
: KCModule(parent, args)
, m_compositingInterface(new OrgKdeKwinCompositingInterface(QStringLiteral("org.kde.KWin"), QStringLiteral("/Compositor"), QDBusConnection::sessionBus(), this))
, m_settings(new KWinCompositingSetting(this))
{
m_form.setupUi(this);
addConfig(m_settings, this);
m_form.glCrashedWarning->setIcon(QIcon::fromTheme(QStringLiteral("dialog-warning")));
QAction *reenableGlAction = new QAction(i18n("Re-enable OpenGL detection"), this);
connect(reenableGlAction, &QAction::triggered, this, &KWinCompositingKCM::reenableGl);
connect(reenableGlAction, &QAction::triggered, m_form.glCrashedWarning, &KMessageWidget::animatedHide);
m_form.glCrashedWarning->addAction(reenableGlAction);
m_form.scaleWarning->setIcon(QIcon::fromTheme(QStringLiteral("dialog-warning")));
m_form.tearingWarning->setIcon(QIcon::fromTheme(QStringLiteral("dialog-warning")));
m_form.windowThumbnailWarning->setIcon(QIcon::fromTheme(QStringLiteral("dialog-warning")));
m_form.kcfg_Enabled->setVisible(!compositingRequired());
m_form.kcfg_WindowsBlockCompositing->setVisible(!compositingRequired());
init();
}
void KWinCompositingKCM::reenableGl()
{
m_settings->setOpenGLIsUnsafe(false);
m_settings->save();
}
void KWinCompositingKCM::init()
{
auto currentIndexChangedSignal = static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged);
// animation speed
m_form.animationDurationFactor->setMaximum(s_animationMultipliers.size() - 1);
connect(m_form.animationDurationFactor, &QSlider::valueChanged, this, [this]() {
m_settings->setAnimationDurationFactor(s_animationMultipliers[m_form.animationDurationFactor->value()]);
updateUnmanagedItemStatus();
});
if (isRunningPlasma()) {
m_form.animationSpeedLabel->hide();
m_form.animationSpeedControls->hide();
}
// gl scale filter
connect(m_form.kcfg_glTextureFilter, currentIndexChangedSignal, this,
[this](int index) {
if (index == 2) {
m_form.scaleWarning->animatedShow();
} else {
m_form.scaleWarning->animatedHide();
}
}
);
// tearing prevention
connect(m_form.kcfg_glPreferBufferSwap, currentIndexChangedSignal, this,
[this](int index) {
if (index == 2) {
// only when cheap - tearing
m_form.tearingWarning->setText(i18n("\"Only when cheap\" only prevents tearing for full screen changes like a video."));
m_form.tearingWarning->animatedShow();
} else if (index == 3) {
// full screen repaints
m_form.tearingWarning->setText(i18n("\"Full screen repaints\" can cause performance problems."));
m_form.tearingWarning->animatedShow();
} else if (index == 4) {
// re-use screen content
m_form.tearingWarning->setText(i18n("\"Re-use screen content\" causes severe performance problems on MESA drivers."));
m_form.tearingWarning->animatedShow();
} else {
m_form.tearingWarning->animatedHide();
}
}
);
// windowThumbnail
connect(m_form.kcfg_HiddenPreviews, currentIndexChangedSignal, this,
[this](int index) {
if (index == 2) {
m_form.windowThumbnailWarning->animatedShow();
} else {
m_form.windowThumbnailWarning->animatedHide();
}
}
);
// compositing type
m_form.backend->addItem(i18n("OpenGL 3.1"), CompositingTypeIndex::OPENGL31_INDEX);
m_form.backend->addItem(i18n("OpenGL 2.0"), CompositingTypeIndex::OPENGL20_INDEX);
m_form.backend->addItem(i18n("XRender"), CompositingTypeIndex::XRENDER_INDEX);
connect(m_form.backend, currentIndexChangedSignal, this, &KWinCompositingKCM::onBackendChanged);
if (m_settings->openGLIsUnsafe()) {
m_form.glCrashedWarning->animatedShow();
}
}
void KWinCompositingKCM::onBackendChanged()
{
const int currentType = m_form.backend->currentData().toInt();
m_form.kcfg_glTextureFilter->setVisible(currentType != CompositingTypeIndex::XRENDER_INDEX);
m_form.kcfg_XRenderSmoothScale->setVisible(currentType == CompositingTypeIndex::XRENDER_INDEX);
updateUnmanagedItemStatus();
}
void KWinCompositingKCM::updateUnmanagedItemStatus()
{
int backend = KWinCompositingSetting::EnumBackend::OpenGL;
bool glCore = true;
const int currentType = m_form.backend->currentData().toInt();
switch (currentType) {
case CompositingTypeIndex::OPENGL31_INDEX:
// default already set
break;
case CompositingTypeIndex::OPENGL20_INDEX:
glCore = false;
break;
case CompositingTypeIndex::XRENDER_INDEX:
backend = KWinCompositingSetting::EnumBackend::XRender;
glCore = false;
break;
}
const auto animationDuration = s_animationMultipliers[m_form.animationDurationFactor->value()];
const bool inPlasma = isRunningPlasma();
bool changed = glCore != m_settings->glCore();
changed |= backend != m_settings->backend();
if (!inPlasma) {
changed |= (animationDuration != m_settings->animationDurationFactor());
}
unmanagedWidgetChangeState(changed);
bool defaulted = glCore == m_settings->defaultGlCoreValue();
defaulted &= backend == m_settings->defaultBackendValue();
if (!inPlasma) {
defaulted &= animationDuration == m_settings->defaultAnimationDurationFactorValue();
}
unmanagedWidgetDefaultState(defaulted);
}
void KWinCompositingKCM::load()
{
KCModule::load();
// unmanaged items
m_settings->findItem("AnimationDurationFactor")->readConfig(m_settings->config());
const double multiplier = m_settings->animationDurationFactor();
auto const it = std::lower_bound(s_animationMultipliers.begin(), s_animationMultipliers.end(), multiplier, std::greater<qreal>());
const int index = static_cast<int>(std::distance(s_animationMultipliers.begin(), it));
m_form.animationDurationFactor->setValue(index);
m_form.animationDurationFactor->setDisabled(m_settings->isAnimationDurationFactorImmutable());
m_settings->findItem("Backend")->readConfig(m_settings->config());
m_settings->findItem("glCore")->readConfig(m_settings->config());
if (m_settings->backend() == KWinCompositingSetting::EnumBackend::OpenGL) {
if (m_settings->glCore()) {
m_form.backend->setCurrentIndex(CompositingTypeIndex::OPENGL31_INDEX);
} else {
m_form.backend->setCurrentIndex(CompositingTypeIndex::OPENGL20_INDEX);
}
} else {
m_form.backend->setCurrentIndex(CompositingTypeIndex::XRENDER_INDEX);
}
m_form.backend->setDisabled(m_settings->isBackendImmutable());
onBackendChanged();
}
void KWinCompositingKCM::defaults()
{
KCModule::defaults();
// unmanaged widgets
m_form.backend->setCurrentIndex(CompositingTypeIndex::OPENGL20_INDEX);
// corresponds to 1.0 seconds in s_animationMultipliers
m_form.animationDurationFactor->setValue(3);
}
void KWinCompositingKCM::save()
{
int backend = KWinCompositingSetting::EnumBackend::OpenGL;
bool glCore = true;
const int currentType = m_form.backend->currentData().toInt();
switch (currentType) {
case CompositingTypeIndex::OPENGL31_INDEX:
// default already set
break;
case CompositingTypeIndex::OPENGL20_INDEX:
backend = KWinCompositingSetting::EnumBackend::OpenGL;
glCore = false;
break;
case CompositingTypeIndex::XRENDER_INDEX:
backend = KWinCompositingSetting::EnumBackend::XRender;
glCore = false;
break;
}
m_settings->setBackend(backend);
m_settings->setGlCore(glCore);
const auto animationDuration = s_animationMultipliers[m_form.animationDurationFactor->value()];
m_settings->setAnimationDurationFactor(animationDuration);
m_settings->save();
KCModule::save();
// Send signal to all kwin instances
QDBusMessage message = QDBusMessage::createSignal(QStringLiteral("/Compositor"),
QStringLiteral("org.kde.kwin.Compositing"),
QStringLiteral("reinit"));
QDBusConnection::sessionBus().send(message);
}
K_PLUGIN_FACTORY(KWinCompositingConfigFactory,
registerPlugin<KWinCompositingKCM>("compositing");
)
#include "main.moc"
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