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286 lines
10 KiB
C++
286 lines
10 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2016 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "x11_platform.h"
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#include "x11cursor.h"
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#include "edge.h"
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#include "windowselector.h"
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#include <config-kwin.h>
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#include <kwinconfig.h>
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#if HAVE_EPOXY_GLX
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#include "glxbackend.h"
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#endif
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#if HAVE_X11_XINPUT
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#include "xinputintegration.h"
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#endif
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#include "eglonxbackend.h"
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#include "keyboard_input.h"
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#include "logging.h"
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#include "screens_xrandr.h"
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#include "options.h"
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#include <KConfigGroup>
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#include <KLocalizedString>
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#include <QThread>
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#include <QOpenGLContext>
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#include <QX11Info>
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namespace KWin
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{
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X11StandalonePlatform::X11StandalonePlatform(QObject *parent)
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: Platform(parent)
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, m_x11Display(QX11Info::display())
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{
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#if HAVE_X11_XINPUT
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if (!qEnvironmentVariableIsSet("KWIN_NO_XI2")) {
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m_xinputIntegration = new XInputIntegration(m_x11Display, this);
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m_xinputIntegration->init();
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if (!m_xinputIntegration->hasXinput()) {
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delete m_xinputIntegration;
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m_xinputIntegration = nullptr;
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} else {
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connect(kwinApp(), &Application::workspaceCreated, m_xinputIntegration, &XInputIntegration::startListening);
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}
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}
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#endif
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}
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X11StandalonePlatform::~X11StandalonePlatform() = default;
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void X11StandalonePlatform::init()
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{
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if (!QX11Info::isPlatformX11()) {
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emit initFailed();
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return;
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}
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setReady(true);
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emit screensQueried();
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}
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Screens *X11StandalonePlatform::createScreens(QObject *parent)
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{
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return new XRandRScreens(parent);
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}
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OpenGLBackend *X11StandalonePlatform::createOpenGLBackend()
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{
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switch (options->glPlatformInterface()) {
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#if HAVE_EPOXY_GLX
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case GlxPlatformInterface:
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if (hasGlx()) {
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return new GlxBackend(m_x11Display);
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} else {
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qCWarning(KWIN_X11STANDALONE) << "Glx not available, trying EGL instead.";
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// no break, needs fall-through
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}
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#endif
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case EglPlatformInterface:
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return new EglOnXBackend(m_x11Display);
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default:
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// no backend available
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return nullptr;
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}
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}
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Edge *X11StandalonePlatform::createScreenEdge(ScreenEdges *edges)
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{
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return new WindowBasedEdge(edges);
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}
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void X11StandalonePlatform::createPlatformCursor(QObject *parent)
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{
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auto c = new X11Cursor(parent, m_xinputIntegration != nullptr);
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#if HAVE_X11_XINPUT
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if (m_xinputIntegration) {
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m_xinputIntegration->setCursor(c);
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// we know we have xkb already
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auto xkb = input()->keyboard()->xkb();
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m_xinputIntegration->setXkb(xkb);
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xkb->reconfigure();
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}
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#endif
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}
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bool X11StandalonePlatform::requiresCompositing() const
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{
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return false;
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}
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bool X11StandalonePlatform::openGLCompositingIsBroken() const
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{
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const QString unsafeKey(QLatin1String("OpenGLIsUnsafe") + (kwinApp()->isX11MultiHead() ? QString::number(kwinApp()->x11ScreenNumber()) : QString()));
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return KConfigGroup(kwinApp()->config(), "Compositing").readEntry(unsafeKey, false);
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}
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QString X11StandalonePlatform::compositingNotPossibleReason() const
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{
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// first off, check whether we figured that we'll crash on detection because of a buggy driver
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KConfigGroup gl_workaround_group(kwinApp()->config(), "Compositing");
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const QString unsafeKey(QLatin1String("OpenGLIsUnsafe") + (kwinApp()->isX11MultiHead() ? QString::number(kwinApp()->x11ScreenNumber()) : QString()));
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if (gl_workaround_group.readEntry("Backend", "OpenGL") == QLatin1String("OpenGL") &&
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gl_workaround_group.readEntry(unsafeKey, false))
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return i18n("<b>OpenGL compositing (the default) has crashed KWin in the past.</b><br>"
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"This was most likely due to a driver bug."
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"<p>If you think that you have meanwhile upgraded to a stable driver,<br>"
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"you can reset this protection but <b>be aware that this might result in an immediate crash!</b></p>"
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"<p>Alternatively, you might want to use the XRender backend instead.</p>");
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if (!Xcb::Extensions::self()->isCompositeAvailable() || !Xcb::Extensions::self()->isDamageAvailable()) {
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return i18n("Required X extensions (XComposite and XDamage) are not available.");
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}
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#if !defined( KWIN_HAVE_XRENDER_COMPOSITING )
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if (!hasGlx())
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return i18n("GLX/OpenGL are not available and only OpenGL support is compiled.");
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#else
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if (!(hasGlx()
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|| (Xcb::Extensions::self()->isRenderAvailable() && Xcb::Extensions::self()->isFixesAvailable()))) {
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return i18n("GLX/OpenGL and XRender/XFixes are not available.");
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}
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#endif
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return QString();
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}
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bool X11StandalonePlatform::compositingPossible() const
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{
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// first off, check whether we figured that we'll crash on detection because of a buggy driver
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KConfigGroup gl_workaround_group(kwinApp()->config(), "Compositing");
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const QString unsafeKey(QLatin1String("OpenGLIsUnsafe") + (kwinApp()->isX11MultiHead() ? QString::number(kwinApp()->x11ScreenNumber()) : QString()));
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if (gl_workaround_group.readEntry("Backend", "OpenGL") == QLatin1String("OpenGL") &&
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gl_workaround_group.readEntry(unsafeKey, false))
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return false;
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if (!Xcb::Extensions::self()->isCompositeAvailable()) {
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qCDebug(KWIN_CORE) << "No composite extension available";
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return false;
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}
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if (!Xcb::Extensions::self()->isDamageAvailable()) {
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qCDebug(KWIN_CORE) << "No damage extension available";
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return false;
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}
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if (hasGlx())
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return true;
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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if (Xcb::Extensions::self()->isRenderAvailable() && Xcb::Extensions::self()->isFixesAvailable())
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return true;
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#endif
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if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES) {
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return true;
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} else if (qstrcmp(qgetenv("KWIN_COMPOSE"), "O2ES") == 0) {
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return true;
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}
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qCDebug(KWIN_CORE) << "No OpenGL or XRender/XFixes support";
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return false;
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}
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bool X11StandalonePlatform::hasGlx()
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{
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return Xcb::Extensions::self()->hasGlx();
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}
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void X11StandalonePlatform::createOpenGLSafePoint(OpenGLSafePoint safePoint)
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{
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const QString unsafeKey(QLatin1String("OpenGLIsUnsafe") + (kwinApp()->isX11MultiHead() ? QString::number(kwinApp()->x11ScreenNumber()) : QString()));
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auto group = KConfigGroup(kwinApp()->config(), "Compositing");
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switch (safePoint) {
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case OpenGLSafePoint::PreInit:
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group.writeEntry(unsafeKey, true);
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group.sync();
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// Deliberately continue with PreFrame
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case OpenGLSafePoint::PreFrame:
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if (m_openGLFreezeProtectionThread == nullptr) {
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Q_ASSERT(m_openGLFreezeProtection == nullptr);
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m_openGLFreezeProtectionThread = new QThread(this);
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m_openGLFreezeProtectionThread->setObjectName("FreezeDetector");
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m_openGLFreezeProtectionThread->start();
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m_openGLFreezeProtection = new QTimer;
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m_openGLFreezeProtection->setInterval(15000);
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m_openGLFreezeProtection->setSingleShot(true);
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m_openGLFreezeProtection->start();
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m_openGLFreezeProtection->moveToThread(m_openGLFreezeProtectionThread);
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connect(m_openGLFreezeProtection, &QTimer::timeout, m_openGLFreezeProtection,
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[] {
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const QString unsafeKey(QLatin1String("OpenGLIsUnsafe") + (kwinApp()->isX11MultiHead() ? QString::number(kwinApp()->x11ScreenNumber()) : QString()));
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auto group = KConfigGroup(kwinApp()->config(), "Compositing");
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group.writeEntry(unsafeKey, true);
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group.sync();
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qFatal("Freeze in OpenGL initialization detected");
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}, Qt::DirectConnection);
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} else {
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Q_ASSERT(m_openGLFreezeProtection);
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QMetaObject::invokeMethod(m_openGLFreezeProtection, "start", Qt::QueuedConnection);
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}
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break;
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case OpenGLSafePoint::PostInit:
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group.writeEntry(unsafeKey, false);
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group.sync();
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// Deliberately continue with PostFrame
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case OpenGLSafePoint::PostFrame:
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QMetaObject::invokeMethod(m_openGLFreezeProtection, "stop", Qt::QueuedConnection);
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break;
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case OpenGLSafePoint::PostLastGuardedFrame:
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m_openGLFreezeProtection->deleteLater();
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m_openGLFreezeProtection = nullptr;
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m_openGLFreezeProtectionThread->quit();
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m_openGLFreezeProtectionThread->wait();
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delete m_openGLFreezeProtectionThread;
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m_openGLFreezeProtectionThread = nullptr;
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break;
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}
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}
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PlatformCursorImage X11StandalonePlatform::cursorImage() const
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{
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auto c = kwinApp()->x11Connection();
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QScopedPointer<xcb_xfixes_get_cursor_image_reply_t, QScopedPointerPodDeleter> cursor(
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xcb_xfixes_get_cursor_image_reply(c,
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xcb_xfixes_get_cursor_image_unchecked(c),
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nullptr));
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if (cursor.isNull()) {
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return PlatformCursorImage();
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}
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QImage qcursorimg((uchar *) xcb_xfixes_get_cursor_image_cursor_image(cursor.data()), cursor->width, cursor->height,
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QImage::Format_ARGB32_Premultiplied);
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// deep copy of image as the data is going to be freed
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return PlatformCursorImage(qcursorimg.copy(), QPoint(cursor->xhot, cursor->yhot));
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}
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void X11StandalonePlatform::doHideCursor()
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{
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xcb_xfixes_hide_cursor(kwinApp()->x11Connection(), kwinApp()->x11RootWindow());
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}
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void X11StandalonePlatform::doShowCursor()
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{
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xcb_xfixes_show_cursor(kwinApp()->x11Connection(), kwinApp()->x11RootWindow());
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}
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void X11StandalonePlatform::startInteractiveWindowSelection(std::function<void(KWin::Toplevel*)> callback, const QByteArray &cursorName)
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{
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if (m_windowSelector.isNull()) {
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m_windowSelector.reset(new WindowSelector);
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}
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m_windowSelector->start(callback, cursorName);
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}
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}
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