[kwin] Add a PluginEffectLoader

This is a specialized subclass of AbstractEffectLoader to load binary
effect plugins. It used the KPluginTrader to find all candidates to load.
The loader is able to detect incorrect ABI versions through the
pluginVersion() and uses the methods exposed by the new
KWin::EffectPluginFactory to check whether the Effect is supported and
should be enabled by default.

The unit test for this loader comes with two plugins: one is able to be
loaded and provides a supported and enabledByDefault method which can be
tweaked during the test to get all the conditions we want to test for.

The second plugin uses an incorrect plugin version and thus cannot get
loaded.
This commit is contained in:
Martin Gräßlin 2014-03-25 11:39:07 +01:00
parent e68d5c6315
commit 6622c97601
8 changed files with 719 additions and 0 deletions

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@ -146,3 +146,37 @@ target_link_libraries(testScriptedEffectLoader
add_test(kwin-testScriptedEffectLoader testScriptedEffectLoader) add_test(kwin-testScriptedEffectLoader testScriptedEffectLoader)
ecm_mark_as_test(testScriptedEffectLoader) ecm_mark_as_test(testScriptedEffectLoader)
########################################################
# Test PluginEffectLoader
########################################################
set( testPluginEffectLoader_SRCS
test_plugin_effectloader.cpp
mock_effectshandler.cpp
../effectloader.cpp
)
add_executable( testPluginEffectLoader ${testPluginEffectLoader_SRCS})
target_link_libraries(testPluginEffectLoader
Qt5::Concurrent
Qt5::Test
kwineffects
kwin4_effect_builtins
)
add_test(kwin-testPluginEffectLoader testPluginEffectLoader)
ecm_mark_as_test(testPluginEffectLoader)
########################################################
# FakeEffectPlugin
########################################################
add_library(fakeeffectplugin MODULE fakeeffectplugin.cpp)
set_target_properties(fakeeffectplugin PROPERTIES PREFIX "")
target_link_libraries(fakeeffectplugin kwineffects)
########################################################
# FakeEffectPlugin-Version
########################################################
add_library(effectversionplugin MODULE fakeeffectplugin_version.cpp)
set_target_properties(effectversionplugin PROPERTIES PREFIX "")
target_link_libraries(effectversionplugin kwineffects)

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@ -0,0 +1,49 @@
/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2014 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 <kwineffects.h>
namespace KWin
{
class FakeEffect : public Effect
{
Q_OBJECT
public:
FakeEffect() {}
virtual ~FakeEffect() {}
static bool supported() {
return effects->isOpenGLCompositing();
}
static bool enabledByDefault() {
return effects->property("testEnabledByDefault").toBool();
}
};
} // namespace
KWIN_EFFECT_FACTORY_SUPPORTED_ENABLED( FakeEffectPluginFactory,
KWin::FakeEffect,
"fakeeffectplugin.json",
return KWin::FakeEffect::supported();,
return KWin::FakeEffect::enabledByDefault();)
#include "fakeeffectplugin.moc"

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@ -0,0 +1,9 @@
{
"Type": "Service",
"X-KDE-Library": "fakeeffectplugin",
"X-KDE-PluginInfo-EnabledByDefault": true,
"X-KDE-PluginInfo-Name": "fakeeffectplugin",
"X-KDE-ServiceTypes": [
"KWin/Effect"
]
}

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@ -0,0 +1,50 @@
/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2014 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 <kwineffects.h>
namespace KWin
{
class FakeVersionEffect : public Effect
{
Q_OBJECT
public:
FakeVersionEffect() {}
virtual ~FakeVersionEffect() {}
};
} // namespace
class FakeEffectPluginFactory : public KWin::EffectPluginFactory
{
Q_OBJECT
Q_PLUGIN_METADATA(IID KPluginFactory_iid FILE "fakeeffectplugin_version.json")
Q_INTERFACES(KPluginFactory)
public:
explicit FakeEffectPluginFactory(const char *a = 0, QObject *b = 0) : KWin::EffectPluginFactory(a, b) {}
~FakeEffectPluginFactory() {}
KWin::Effect *createEffect() const override {
return new KWin::FakeVersionEffect();
}
};
K_EXPORT_PLUGIN_VERSION(quint32(KWIN_EFFECT_API_VERSION) - 1)
#include "fakeeffectplugin_version.moc"

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@ -0,0 +1,9 @@
{
"Type": "Service",
"X-KDE-Library": "effectversionplugin",
"X-KDE-PluginInfo-EnabledByDefault": true,
"X-KDE-PluginInfo-Name": "effectversion",
"X-KDE-ServiceTypes": [
"KWin/Effect"
]
}

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@ -0,0 +1,382 @@
/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2014 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 "../effectloader.h"
#include "mock_effectshandler.h"
#include "../scripting/scriptedeffect.h" // for mocking ScriptedEffect::create
// KDE
#include <KConfig>
#include <KConfigGroup>
#include <KPluginTrader>
// Qt
#include <QtTest/QtTest>
#include <QStringList>
Q_DECLARE_METATYPE(KWin::CompositingType)
Q_DECLARE_METATYPE(KWin::LoadEffectFlag)
Q_DECLARE_METATYPE(KWin::LoadEffectFlags)
Q_DECLARE_METATYPE(KWin::Effect*)
namespace KWin
{
ScriptedEffect *ScriptedEffect::create(KService::Ptr)
{
return nullptr;
}
}
class TestPluginEffectLoader : public QObject
{
Q_OBJECT
private Q_SLOTS:
void testHasEffect_data();
void testHasEffect();
void testKnownEffects();
void testSupported_data();
void testSupported();
void testLoadEffect_data();
void testLoadEffect();
void testLoadPluginEffect_data();
void testLoadPluginEffect();
void testLoadAllEffects();
};
void TestPluginEffectLoader::testHasEffect_data()
{
QTest::addColumn<QString>("name");
QTest::addColumn<bool>("expected");
// all the built-in effects should fail
QTest::newRow("blur") << QStringLiteral("blur") << false;
QTest::newRow("Contrast") << QStringLiteral("contrast") << false;
QTest::newRow("CoverSwitch") << QStringLiteral("coverswitch") << false;
QTest::newRow("Cube") << QStringLiteral("cube") << false;
QTest::newRow("CubeSlide") << QStringLiteral("cubeslide") << false;
QTest::newRow("Dashboard") << QStringLiteral("dashboard") << false;
QTest::newRow("DesktopGrid") << QStringLiteral("desktopgrid") << false;
QTest::newRow("DimInactive") << QStringLiteral("diminactive") << false;
QTest::newRow("DimScreen") << QStringLiteral("dimscreen") << false;
QTest::newRow("FallApart") << QStringLiteral("fallapart") << false;
QTest::newRow("FlipSwitch") << QStringLiteral("flipswitch") << false;
QTest::newRow("Glide") << QStringLiteral("glide") << false;
QTest::newRow("HighlightWindow") << QStringLiteral("highlightwindow") << false;
QTest::newRow("Invert") << QStringLiteral("invert") << false;
QTest::newRow("Kscreen") << QStringLiteral("kscreen") << false;
QTest::newRow("Logout") << QStringLiteral("logout") << false;
QTest::newRow("LookingGlass") << QStringLiteral("lookingglass") << false;
QTest::newRow("MagicLamp") << QStringLiteral("magiclamp") << false;
QTest::newRow("Magnifier") << QStringLiteral("magnifier") << false;
QTest::newRow("MinimizeAnimation") << QStringLiteral("minimizeanimation") << false;
QTest::newRow("MouseClick") << QStringLiteral("mouseclick") << false;
QTest::newRow("MouseMark") << QStringLiteral("mousemark") << false;
QTest::newRow("PresentWindows") << QStringLiteral("presentwindows") << false;
QTest::newRow("Resize") << QStringLiteral("resize") << false;
QTest::newRow("ScreenEdge") << QStringLiteral("screenedge") << false;
QTest::newRow("ScreenShot") << QStringLiteral("screenshot") << false;
QTest::newRow("Sheet") << QStringLiteral("sheet") << false;
QTest::newRow("ShowFps") << QStringLiteral("showfps") << false;
QTest::newRow("ShowPaint") << QStringLiteral("showpaint") << false;
QTest::newRow("Slide") << QStringLiteral("slide") << false;
QTest::newRow("SlideBack") << QStringLiteral("slideback") << false;
QTest::newRow("SlidingPopups") << QStringLiteral("slidingpopups") << false;
QTest::newRow("SnapHelper") << QStringLiteral("snaphelper") << false;
QTest::newRow("StartupFeedback") << QStringLiteral("startupfeedback") << false;
QTest::newRow("ThumbnailAside") << QStringLiteral("thumbnailaside") << false;
QTest::newRow("TrackMouse") << QStringLiteral("trackmouse") << false;
QTest::newRow("WindowGeometry") << QStringLiteral("windowgeometry") << false;
QTest::newRow("WobblyWindows") << QStringLiteral("wobblywindows") << false;
QTest::newRow("Zoom") << QStringLiteral("zoom") << false;
QTest::newRow("Non Existing") << QStringLiteral("InvalidName") << false;
// all the scripted effects should fail
QTest::newRow("Fade") << QStringLiteral("kwin4_effect_fade") << false;
QTest::newRow("FadeDesktop") << QStringLiteral("kwin4_effect_fadedesktop") << false;
QTest::newRow("DialogParent") << QStringLiteral("kwin4_effect_dialogparent") << false;
QTest::newRow("Login") << QStringLiteral("kwin4_effect_login") << false;
QTest::newRow("Maximize") << QStringLiteral("kwin4_effect_maximize") << false;
QTest::newRow("ScaleIn") << QStringLiteral("kwin4_effect_scalein") << false;
QTest::newRow("Translucency") << QStringLiteral("kwin4_effect_translucency") << false;
// and the fake effects we use here
QTest::newRow("fakeeffectplugin") << QStringLiteral("fakeeffectplugin") << true;
QTest::newRow("fakeeffectplugin CS") << QStringLiteral("fakeEffectPlugin") << true;
QTest::newRow("effectversion") << QStringLiteral("effectversion") << true;
}
void TestPluginEffectLoader::testHasEffect()
{
QFETCH(QString, name);
QFETCH(bool, expected);
KWin::PluginEffectLoader loader;
loader.setPluginSubDirectory(QString());
QCOMPARE(loader.hasEffect(name), expected);
}
void TestPluginEffectLoader::testKnownEffects()
{
QStringList expectedEffects;
expectedEffects << QStringLiteral("fakeeffectplugin") << QStringLiteral("effectversion");
KWin::PluginEffectLoader loader;
loader.setPluginSubDirectory(QString());
QStringList result = loader.listOfKnownEffects();
// at least as many effects as we expect - system running the test could have more effects
QVERIFY(result.size() >= expectedEffects.size());
for (const QString &effect : expectedEffects) {
QVERIFY(result.contains(effect));
}
}
void TestPluginEffectLoader::testSupported_data()
{
QTest::addColumn<QString>("name");
QTest::addColumn<bool>("expected");
QTest::addColumn<KWin::CompositingType>("type");
const KWin::CompositingType xc = KWin::XRenderCompositing;
const KWin::CompositingType oc = KWin::OpenGL2Compositing;
QTest::newRow("invalid") << QStringLiteral("blur") << false << xc;
QTest::newRow("fake - xrender") << QStringLiteral("fakeeffectplugin") << false << xc;
QTest::newRow("fake - opengl") << QStringLiteral("fakeeffectplugin") << true << oc;
QTest::newRow("fake - CS") << QStringLiteral("fakeEffectPlugin") << true << oc;
QTest::newRow("version") << QStringLiteral("effectversion") << false << xc;
}
void TestPluginEffectLoader::testSupported()
{
QFETCH(QString, name);
QFETCH(bool, expected);
QFETCH(KWin::CompositingType, type);
MockEffectsHandler mockHandler(type);
KWin::PluginEffectLoader loader;
loader.setPluginSubDirectory(QString());
QCOMPARE(loader.isEffectSupported(name), expected);
}
void TestPluginEffectLoader::testLoadEffect_data()
{
QTest::addColumn<QString>("name");
QTest::addColumn<bool>("expected");
QTest::addColumn<KWin::CompositingType>("type");
const KWin::CompositingType xc = KWin::XRenderCompositing;
const KWin::CompositingType oc = KWin::OpenGL2Compositing;
QTest::newRow("invalid") << QStringLiteral("slide") << false << xc;
QTest::newRow("fake - xrender") << QStringLiteral("fakeeffectplugin") << false << xc;
QTest::newRow("fake - opengl") << QStringLiteral("fakeeffectplugin") << true << oc;
QTest::newRow("fake - CS") << QStringLiteral("fakeEffectPlugin") << true << oc;
QTest::newRow("version") << QStringLiteral("effectversion") << false << xc;
}
void TestPluginEffectLoader::testLoadEffect()
{
QFETCH(QString, name);
QFETCH(bool, expected);
QFETCH(KWin::CompositingType, type);
MockEffectsHandler mockHandler(type);
KWin::PluginEffectLoader loader;
loader.setPluginSubDirectory(QString());
KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
loader.setConfig(config);
qRegisterMetaType<KWin::Effect*>();
QSignalSpy spy(&loader, SIGNAL(effectLoaded(KWin::Effect*,QString)));
// connect to signal to ensure that we delete the Effect again as the Effect doesn't have a parent
connect(&loader, &KWin::PluginEffectLoader::effectLoaded,
[&name](KWin::Effect *effect, const QString &effectName) {
QCOMPARE(effectName, name.toLower());
effect->deleteLater();
}
);
// try to load the Effect
QCOMPARE(loader.loadEffect(name), expected);
// loading again should fail
QVERIFY(!loader.loadEffect(name));
// signal spy should have got the signal if it was expected
QCOMPARE(spy.isEmpty(), !expected);
if (!spy.isEmpty()) {
QCOMPARE(spy.count(), 1);
// if we caught a signal it should have the effect name we passed in
QList<QVariant> arguments = spy.takeFirst();
QCOMPARE(arguments.count(), 2);
QCOMPARE(arguments.at(1).toString(), name.toLower());
}
spy.clear();
QVERIFY(spy.isEmpty());
// now if we wait for the events being processed, the effect will get deleted and it should load again
QTest::qWait(1);
QCOMPARE(loader.loadEffect(name), expected);
// signal spy should have got the signal if it was expected
QCOMPARE(spy.isEmpty(), !expected);
if (!spy.isEmpty()) {
QCOMPARE(spy.count(), 1);
// if we caught a signal it should have the effect name we passed in
QList<QVariant> arguments = spy.takeFirst();
QCOMPARE(arguments.count(), 2);
QCOMPARE(arguments.at(1).toString(), name.toLower());
}
}
void TestPluginEffectLoader::testLoadPluginEffect_data()
{
QTest::addColumn<QString>("name");
QTest::addColumn<bool>("expected");
QTest::addColumn<KWin::CompositingType>("type");
QTest::addColumn<KWin::LoadEffectFlags>("loadFlags");
QTest::addColumn<bool>("enabledByDefault");
const KWin::CompositingType xc = KWin::XRenderCompositing;
const KWin::CompositingType oc = KWin::OpenGL2Compositing;
const KWin::LoadEffectFlags checkDefault = KWin::LoadEffectFlag::Load | KWin::LoadEffectFlag::CheckDefaultFunction;
const KWin::LoadEffectFlags forceFlags = KWin::LoadEffectFlag::Load;
const KWin::LoadEffectFlags dontLoadFlags = KWin::LoadEffectFlags();
// enabled by default, but not supported
QTest::newRow("fakeeffectplugin") << QStringLiteral("fakeeffectplugin") << false << xc << checkDefault << false;
// enabled by default, check default false
QTest::newRow("supported, check default error") << QStringLiteral("fakeeffectplugin") << false << oc << checkDefault << false;
// enabled by default, check default true
QTest::newRow("supported, check default") << QStringLiteral("fakeeffectplugin") << true << oc << checkDefault << true;
// enabled by default, check default false
QTest::newRow("supported, check default error, forced") << QStringLiteral("fakeeffectplugin") << true << oc << forceFlags << false;
// enabled by default, check default true
QTest::newRow("supported, check default, don't load") << QStringLiteral("fakeeffectplugin") << false << oc << dontLoadFlags << true;
// incorrect version
QTest::newRow("Version") << QStringLiteral("effectversion") << false << xc << forceFlags << true;
}
void TestPluginEffectLoader::testLoadPluginEffect()
{
QFETCH(QString, name);
QFETCH(bool, expected);
QFETCH(KWin::CompositingType, type);
QFETCH(KWin::LoadEffectFlags, loadFlags);
QFETCH(bool, enabledByDefault);
MockEffectsHandler mockHandler(type);
mockHandler.setProperty("testEnabledByDefault", enabledByDefault);
KWin::PluginEffectLoader loader;
loader.setPluginSubDirectory(QString());
KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
loader.setConfig(config);
const auto plugins = KPluginTrader::self()->query(QString(),
QStringLiteral("KWin/Effect"),
QStringLiteral("[X-KDE-PluginInfo-Name] == '%1'").arg(name));
QCOMPARE(plugins.size(), 1);
qRegisterMetaType<KWin::Effect*>();
QSignalSpy spy(&loader, SIGNAL(effectLoaded(KWin::Effect*,QString)));
// connect to signal to ensure that we delete the Effect again as the Effect doesn't have a parent
connect(&loader, &KWin::PluginEffectLoader::effectLoaded,
[&name](KWin::Effect *effect, const QString &effectName) {
QCOMPARE(effectName, name);
effect->deleteLater();
}
);
// try to load the Effect
QCOMPARE(loader.loadEffect(plugins.first(), loadFlags), expected);
// loading again should fail
QVERIFY(!loader.loadEffect(plugins.first(), loadFlags));
// signal spy should have got the signal if it was expected
QCOMPARE(spy.isEmpty(), !expected);
if (!spy.isEmpty()) {
QCOMPARE(spy.count(), 1);
// if we caught a signal it should have the effect name we passed in
QList<QVariant> arguments = spy.takeFirst();
QCOMPARE(arguments.count(), 2);
QCOMPARE(arguments.at(1).toString(), name);
}
spy.clear();
QVERIFY(spy.isEmpty());
// now if we wait for the events being processed, the effect will get deleted and it should load again
QTest::qWait(1);
QCOMPARE(loader.loadEffect(plugins.first(), loadFlags), expected);
// signal spy should have got the signal if it was expected
QCOMPARE(spy.isEmpty(), !expected);
if (!spy.isEmpty()) {
QCOMPARE(spy.count(), 1);
// if we caught a signal it should have the effect name we passed in
QList<QVariant> arguments = spy.takeFirst();
QCOMPARE(arguments.count(), 2);
QCOMPARE(arguments.at(1).toString(), name);
}
}
void TestPluginEffectLoader::testLoadAllEffects()
{
MockEffectsHandler mockHandler(KWin::OpenGL2Compositing);
mockHandler.setProperty("testEnabledByDefault", true);
KWin::PluginEffectLoader loader;
loader.setPluginSubDirectory(QString());
KSharedConfig::Ptr config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
// prepare the configuration to hard enable/disable the effects we want to load
KConfigGroup plugins = config->group("Plugins");
plugins.writeEntry(QStringLiteral("fakeeffectpluginEnabled"), false);
plugins.sync();
loader.setConfig(config);
qRegisterMetaType<KWin::Effect*>();
QSignalSpy spy(&loader, SIGNAL(effectLoaded(KWin::Effect*,QString)));
// connect to signal to ensure that we delete the Effect again as the Effect doesn't have a parent
connect(&loader, &KWin::PluginEffectLoader::effectLoaded,
[](KWin::Effect *effect) {
effect->deleteLater();
}
);
// the config is prepared so that no Effect gets loaded!
loader.queryAndLoadAll();
// we need to wait some time because it's queued and in a thread
QVERIFY(!spy.wait(100));
// now let's prepare a config which has one effect explicitly enabled
plugins.writeEntry(QStringLiteral("fakeeffectpluginEnabled"), true);
plugins.sync();
loader.queryAndLoadAll();
// should load one effect in first go
QVERIFY(spy.wait(100));
// and afterwards it should not load another one
QVERIFY(!spy.wait(10));
QCOMPARE(spy.size(), 1);
// if we caught a signal it should have the effect name we passed in
QList<QVariant> arguments = spy.takeFirst();
QCOMPARE(arguments.count(), 2);
QCOMPARE(arguments.at(1).toString(), QStringLiteral("fakeeffectplugin"));
spy.clear();
}
QTEST_MAIN(TestPluginEffectLoader)
#include "test_plugin_effectloader.moc"

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@ -26,6 +26,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "scripting/scriptedeffect.h" #include "scripting/scriptedeffect.h"
// KDE // KDE
#include <KConfigGroup> #include <KConfigGroup>
#include <KPluginTrader>
#include <KServiceTypeTrader> #include <KServiceTypeTrader>
// Qt // Qt
#include <QtConcurrentRun> #include <QtConcurrentRun>
@ -296,4 +297,160 @@ KService::Ptr ScriptedEffectLoader::findEffect(const QString &name) const
return KService::Ptr(); return KService::Ptr();
} }
PluginEffectLoader::PluginEffectLoader(QObject *parent)
: AbstractEffectLoader(parent)
, m_queue(new EffectLoadQueue< PluginEffectLoader, KPluginInfo>(this))
, m_pluginSubDirectory(QStringLiteral("kwin/effects/plugins/"))
{
}
PluginEffectLoader::~PluginEffectLoader()
{
}
bool PluginEffectLoader::hasEffect(const QString &name) const
{
KPluginInfo info = findEffect(name);
return info.isValid();
}
KPluginInfo PluginEffectLoader::findEffect(const QString &name) const
{
const QString constraint = QStringLiteral("[%1] == '%2'").arg(s_nameProperty).arg(name.toLower());
KPluginInfo::List plugins = KPluginTrader::self()->query(m_pluginSubDirectory, s_serviceType, constraint);
if (plugins.isEmpty()) {
return KPluginInfo();
}
return plugins.first();
}
bool PluginEffectLoader::isEffectSupported(const QString &name) const
{
if (EffectPluginFactory *effectFactory = factory(findEffect(name))) {
return effectFactory->isSupported();
}
return false;
}
EffectPluginFactory *PluginEffectLoader::factory(const KPluginInfo &info) const
{
if (!info.isValid()) {
return nullptr;
}
KPluginLoader loader(info.libraryPath());
if (loader.pluginVersion() != KWIN_EFFECT_API_VERSION) {
qDebug() << info.pluginName() << " has not matching plugin version, expected " << KWIN_EFFECT_API_VERSION << "got " << loader.pluginVersion();
return nullptr;
}
KPluginFactory *factory = loader.factory();
if (!factory) {
qDebug() << "Did not get KPluginFactory for " << info.pluginName();
return nullptr;
}
return dynamic_cast< EffectPluginFactory* >(factory);
}
QStringList PluginEffectLoader::listOfKnownEffects() const
{
const KPluginInfo::List plugins = findAllEffects();
QStringList result;
for (const KPluginInfo &plugin : plugins) {
result << plugin.pluginName();
}
return result;
}
bool PluginEffectLoader::loadEffect(const QString &name)
{
KPluginInfo info = findEffect(name);
if (!info.isValid()) {
return false;
}
return loadEffect(info, LoadEffectFlag::Load);
}
bool PluginEffectLoader::loadEffect(const KPluginInfo &info, LoadEffectFlags flags)
{
if (!info.isValid()) {
qDebug() << "Plugin info is not valid";
return false;
}
const QString name = info.pluginName();
if (!flags.testFlag(LoadEffectFlag::Load)) {
qDebug() << "Loading flags disable effect: " << name;
return false;
}
if (m_loadedEffects.contains(name)) {
qDebug() << name << " already loaded";
return false;
}
EffectPluginFactory *effectFactory = factory(info);
if (!effectFactory) {
qDebug() << "Couldn't get an EffectPluginFactory for: " << name;
return false;
}
#ifndef KWIN_UNIT_TEST
effects->makeOpenGLContextCurrent();
#endif
if (!effectFactory->isSupported()) {
qDebug() << "Effect is not supported: " << name;
return false;
}
if (flags.testFlag(LoadEffectFlag::CheckDefaultFunction)) {
if (!effectFactory->enabledByDefault()) {
qDebug() << "Enabled by default function disables effect: " << name;
return false;
}
}
// ok, now we can try to create the Effect
Effect *e = effectFactory->createEffect();
if (!e) {
qDebug() << "Failed to create effect: " << name;
return false;
}
// insert in our loaded effects
m_loadedEffects << name;
connect(e, &Effect::destroyed, this,
[this, name]() {
m_loadedEffects.removeAll(name);
}
);
qDebug() << "Successfully loaded plugin effect: " << name;
emit effectLoaded(e, name);
return true;
}
void PluginEffectLoader::queryAndLoadAll()
{
// perform querying for the services in a thread
QFutureWatcher<KPluginInfo::List> *watcher = new QFutureWatcher<KPluginInfo::List>(this);
connect(watcher, &QFutureWatcher<KPluginInfo::List>::finished, this,
[this, watcher]() {
const KPluginInfo::List effects = watcher->result();
for (const KPluginInfo &effect : effects) {
const LoadEffectFlags flags = readConfig(effect.pluginName(), effect.isPluginEnabledByDefault());
if (flags.testFlag(LoadEffectFlag::Load)) {
m_queue->enqueue(qMakePair(effect, flags));
}
}
watcher->deleteLater();
},
Qt::QueuedConnection);
watcher->setFuture(QtConcurrent::run(this, &PluginEffectLoader::findAllEffects));
}
KPluginInfo::List PluginEffectLoader::findAllEffects() const
{
return KPluginTrader::self()->query(m_pluginSubDirectory, s_serviceType);
}
void PluginEffectLoader::setPluginSubDirectory(const QString &directory)
{
m_pluginSubDirectory = directory;
}
} // namespace KWin } // namespace KWin

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@ -29,9 +29,12 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <QPair> #include <QPair>
#include <QQueue> #include <QQueue>
class KPluginInfo;
namespace KWin namespace KWin
{ {
class Effect; class Effect;
class EffectPluginFactory;
enum class BuiltInEffect; enum class BuiltInEffect;
/** /**
@ -310,6 +313,32 @@ private:
EffectLoadQueue< ScriptedEffectLoader, KService::Ptr > *m_queue; EffectLoadQueue< ScriptedEffectLoader, KService::Ptr > *m_queue;
}; };
class PluginEffectLoader : public AbstractEffectLoader
{
Q_OBJECT
public:
explicit PluginEffectLoader(QObject *parent = nullptr);
~PluginEffectLoader() override;
bool hasEffect(const QString &name) const override;
bool isEffectSupported(const QString &name) const override;
QStringList listOfKnownEffects() const override;
void queryAndLoadAll() override;
bool loadEffect(const QString &name) override;
bool loadEffect(const KPluginInfo &info, LoadEffectFlags flags);
void setPluginSubDirectory(const QString &directory);
private:
QList<KPluginInfo> findAllEffects() const;
KPluginInfo findEffect(const QString &name) const;
EffectPluginFactory *factory(const KPluginInfo &info) const;
QStringList m_loadedEffects;
EffectLoadQueue< PluginEffectLoader, KPluginInfo> *m_queue;
QString m_pluginSubDirectory;
};
} }
Q_DECLARE_OPERATORS_FOR_FLAGS(KWin::LoadEffectFlags) Q_DECLARE_OPERATORS_FOR_FLAGS(KWin::LoadEffectFlags)