7b464cf284
Summary: A new virtual method is added to Platform: startInteractiveWindowSelection The interactive window selection enters a mode where the user can select a window through the pointer or keyboard device. The cursor is turned into a crosshair cursor, unless another cursor name is provided (e.g. pirate for kill window). Once a window is selected the provided callback method is invoked with the selected Toplevel as argument. In case the user cancelled the selection a nullptr argument is passed in. Currently it's only implemented by the X11 standalone platform using the logic from KillWindow. Just instead of killing the window the callback is invoked. KillWindow loses the X11 implementation and interacts with the new functionality in Platform by providing a lambda function for the killing. Test Plan: Killing of X11 windows is still possible Reviewers: #kwin, #plasma Subscribers: plasma-devel, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D3363
285 lines
10 KiB
C++
285 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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