433 lines
15 KiB
C++
433 lines
15 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 "sync_filter.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 "abstract_client.h"
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#include "effects_x11.h"
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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 "screenedges_filter.h"
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#include "options.h"
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#include "overlaywindow_x11.h"
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#include "non_composited_outline.h"
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#include "workspace.h"
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#include "x11_decoration_renderer.h"
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#include <kwinxrenderutils.h>
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#include <KConfigGroup>
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#include <KLocalizedString>
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#include <KCrash>
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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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connect(kwinApp(), &Application::workspaceCreated, this,
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[this] {
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if (Xcb::Extensions::self()->isSyncAvailable()) {
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m_syncFilter = std::make_unique<SyncFilter>();
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}
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}
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);
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}
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X11StandalonePlatform::~X11StandalonePlatform()
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{
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if (m_openGLFreezeProtectionThread) {
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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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}
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if (isReady()) {
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XRenderUtils::cleanup();
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}
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}
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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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XRenderUtils::init(kwinApp()->x11Connection(), kwinApp()->x11RootWindow());
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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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Q_FALLTHROUGH();
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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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if (m_screenEdgesFilter.isNull()) {
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m_screenEdgesFilter.reset(new ScreenEdgesFilter);
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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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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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Q_FALLTHROUGH();
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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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const QString configName = kwinApp()->config()->name();
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m_openGLFreezeProtection->moveToThread(m_openGLFreezeProtectionThread);
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connect(m_openGLFreezeProtection, &QTimer::timeout, m_openGLFreezeProtection,
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[configName] {
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const QString unsafeKey(QLatin1String("OpenGLIsUnsafe") + (kwinApp()->isX11MultiHead() ? QString::number(kwinApp()->x11ScreenNumber()) : QString()));
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auto group = KConfigGroup(KSharedConfig::openConfig(configName), "Compositing");
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group.writeEntry(unsafeKey, true);
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group.sync();
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KCrash::setDrKonqiEnabled(false);
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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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Q_FALLTHROUGH();
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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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void X11StandalonePlatform::setupActionForGlobalAccel(QAction *action)
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{
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connect(action, &QAction::triggered, kwinApp(), [action] {
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QVariant timestamp = action->property("org.kde.kglobalaccel.activationTimestamp");
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bool ok = false;
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const quint32 t = timestamp.toULongLong(&ok);
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if (ok) {
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kwinApp()->setX11Time(t);
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}
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});
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}
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OverlayWindow *X11StandalonePlatform::createOverlayWindow()
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{
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return new OverlayWindowX11();
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}
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/*
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Updates xTime(). This used to simply fetch current timestamp from the server,
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but that can cause xTime() to be newer than timestamp of events that are
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still in our events queue, thus e.g. making XSetInputFocus() caused by such
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event to be ignored. Therefore events queue is searched for first
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event with timestamp, and extra PropertyNotify is generated in order to make
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sure such event is found.
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*/
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void X11StandalonePlatform::updateXTime()
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{
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// NOTE: QX11Info::getTimestamp does not yet search the event queue as the old
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// solution did. This means there might be regressions currently. See the
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// documentation above on how it should be done properly.
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kwinApp()->setX11Time(QX11Info::getTimestamp(), Application::TimestampUpdate::Always);
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}
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OutlineVisual *X11StandalonePlatform::createOutline(Outline *outline)
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{
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// first try composited Outline
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auto ret = Platform::createOutline(outline);
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if (!ret) {
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ret = new NonCompositedOutlineVisual(outline);
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}
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return ret;
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}
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Decoration::Renderer *X11StandalonePlatform::createDecorationRenderer(Decoration::DecoratedClientImpl *client)
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{
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auto renderer = Platform::createDecorationRenderer(client);
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if (!renderer) {
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renderer = new Decoration::X11Renderer(client);
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}
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return renderer;
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}
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void X11StandalonePlatform::invertScreen()
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{
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using namespace Xcb::RandR;
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bool succeeded = false;
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if (Xcb::Extensions::self()->isRandrAvailable()) {
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const auto active_client = workspace()->activeClient();
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ScreenResources res((active_client && active_client->window() != XCB_WINDOW_NONE) ? active_client->window() : rootWindow());
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if (!res.isNull()) {
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for (int j = 0; j < res->num_crtcs; ++j) {
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auto crtc = res.crtcs()[j];
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CrtcGamma gamma(crtc);
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if (gamma.isNull()) {
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continue;
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}
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if (gamma->size) {
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qCDebug(KWIN_CORE) << "inverting screen using xcb_randr_set_crtc_gamma";
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const int half = gamma->size / 2 + 1;
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uint16_t *red = gamma.red();
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uint16_t *green = gamma.green();
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uint16_t *blue = gamma.blue();
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for (int i = 0; i < half; ++i) {
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auto invert = [&gamma, i](uint16_t *ramp) {
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qSwap(ramp[i], ramp[gamma->size - 1 - i]);
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};
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invert(red);
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invert(green);
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invert(blue);
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}
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xcb_randr_set_crtc_gamma(connection(), crtc, gamma->size, red, green, blue);
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succeeded = true;
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}
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}
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}
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}
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if (!succeeded) {
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Platform::invertScreen();
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}
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}
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void X11StandalonePlatform::createEffectsHandler(Compositor *compositor, Scene *scene)
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{
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new EffectsHandlerImplX11(compositor, scene);
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}
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QVector<CompositingType> X11StandalonePlatform::supportedCompositors() const
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{
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QVector<CompositingType> compositors;
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#if HAVE_EPOXY_GLX
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compositors << OpenGLCompositing;
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#endif
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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compositors << XRenderCompositing;
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#endif
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compositors << NoCompositing;
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return compositors;
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}
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}
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