yukijoou/kwin
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
kwin/composite.cpp
Fredrik Höglund 5f220bef2e Revert "delay unsynced window ready_for_painting state" 
The next commit will solve this problem in a different way.

This reverts commit e617f176d1e293abcaafbb14d0afcf8aee24f054.
2012-11-07 22:16:49 +01:00

1215 lines
37 KiB
C++
Raw Blame History

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Lubos Lunak <l.lunak@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/>.
*********************************************************************/
/*
Code related to compositing (redirecting windows to pixmaps and tracking
window damage).
Docs:
XComposite (the protocol, but the function calls map to it):
http://gitweb.freedesktop.org/?p=xorg/proto/compositeproto.git;a=blob_plain;hb=HEAD;f=compositeproto.txt
XDamage (again the protocol):
http://gitweb.freedesktop.org/?p=xorg/proto/damageproto.git;a=blob_plain;hb=HEAD;f=damageproto.txt
Paper including basics on compositing, XGL vs AIGLX, XRender vs OpenGL, etc.:
http://www.vis.uni-stuttgart.de/~hopf/pub/LinuxTag2007_compiz_NextGenerationDesktop_Paper.pdf
Composite HOWTO from Fredrik:
http://ktown.kde.org/~fredrik/composite_howto.html
*/
#include "composite.h"
#include "compositingadaptor.h"
#include <config-X11.h>
#include "utils.h"
#include <QTextStream>
#include "workspace.h"
#include "client.h"
#include "unmanaged.h"
#include "deleted.h"
#include "effects.h"
#include "overlaywindow.h"
#include "scene.h"
#include "scene_xrender.h"
#include "scene_opengl.h"
#include "shadow.h"
#include "useractions.h"
#include "compositingprefs.h"
#include "notifications.h"
#include <stdio.h>
#include <QtCore/QtConcurrentRun>
#include <QtCore/QFutureWatcher>
#include <QMenu>
#include <QTimerEvent>
#include <QDateTime>
#include <QDBusConnection>
#include <kaction.h>
#include <kactioncollection.h>
#include <klocale.h>
#include <kxerrorhandler.h>
#include <X11/extensions/shape.h>
#include <X11/extensions/Xcomposite.h>
#include <X11/extensions/Xrandr.h>
namespace KWin
{
Compositor *Compositor::s_compositor = NULL;
extern int currentRefreshRate();
//****************************************
// Workspace
//****************************************
Compositor *Compositor::createCompositor(QObject *parent)
{
Q_ASSERT(!s_compositor);
s_compositor = new Compositor(parent);
return s_compositor;
}
Compositor::Compositor(QObject* workspace)
: QObject(workspace)
, m_suspended(!options->isUseCompositing())
, m_blocked(false)
, cm_selection(NULL)
, vBlankInterval(0)
, fpsInterval(0)
, m_xrrRefreshRate(0)
, forceUnredirectCheck(false)
, m_finishing(false)
, m_timeSinceLastVBlank(0)
, m_nextFrameDelay(0)
, m_scene(NULL)
{
new CompositingAdaptor(this);
QDBusConnection dbus = QDBusConnection::sessionBus();
dbus.registerObject("/Compositor", this);
dbus.registerService("org.kde.kwin.Compositing");
connect(&unredirectTimer, SIGNAL(timeout()), SLOT(delayedCheckUnredirect()));
connect(&compositeResetTimer, SIGNAL(timeout()), SLOT(restart()));
connect(workspace, SIGNAL(configChanged()), SLOT(slotConfigChanged()));
connect(&mousePollingTimer, SIGNAL(timeout()), SLOT(performMousePoll()));
unredirectTimer.setSingleShot(true);
compositeResetTimer.setSingleShot(true);
nextPaintReference.invalidate(); // Initialize the timer
m_releaseSelectionTimer.setSingleShot(true);
// 2 sec which should be enough to restart the compositor
m_releaseSelectionTimer.setInterval(2000);
connect(&m_releaseSelectionTimer, SIGNAL(timeout()), SLOT(releaseCompositorSelection()));
// delay the call to setup by one event cycle
// The ctor of this class is invoked from the Workspace ctor, that means before
// Workspace is completely constructed, so calling Workspace::self() would result
// in undefined behavior. This is fixed by using a delayed invocation.
QMetaObject::invokeMethod(this, "setup", Qt::QueuedConnection);
}
Compositor::~Compositor()
{
finish();
delete cm_selection;
}
void Compositor::setup()
{
if (hasScene())
return;
if (m_suspended) {
kDebug(1212) << "Compositing is suspended";
return;
} else if (!CompositingPrefs::compositingPossible()) {
kError(1212) << "Compositing is not possible";
return;
}
m_starting = true;
if (!options->isCompositingInitialized()) {
#ifndef KWIN_HAVE_OPENGLES
// options->reloadCompositingSettings(true) initializes the CompositingPrefs which calls an
// external program in turn
// run this in an external thread to make startup faster.
QFutureWatcher<void> *compositingPrefsFuture = new QFutureWatcher<void>();
connect(compositingPrefsFuture, SIGNAL(finished()), this, SLOT(slotCompositingOptionsInitialized()));
connect(compositingPrefsFuture, SIGNAL(finished()), compositingPrefsFuture, SLOT(deleteLater()));
compositingPrefsFuture->setFuture(QtConcurrent::run(options, &Options::reloadCompositingSettings, true));
#else
// OpenGL ES does not call the external program, so no need to create a thread
options->reloadCompositingSettings(true);
slotCompositingOptionsInitialized();
#endif
} else {
slotCompositingOptionsInitialized();
}
}
void Compositor::slotCompositingOptionsInitialized()
{
char selection_name[ 100 ];
sprintf(selection_name, "_NET_WM_CM_S%d", DefaultScreen(display()));
if (!cm_selection) {
cm_selection = new KSelectionOwner(selection_name);
connect(cm_selection, SIGNAL(lostOwnership()), SLOT(finish()));
}
cm_selection->claim(true); // force claiming
switch(options->compositingMode()) {
case OpenGLCompositing: {
kDebug(1212) << "Initializing OpenGL compositing";
// Some broken drivers crash on glXQuery() so to prevent constant KWin crashes:
KSharedConfigPtr unsafeConfigPtr = KGlobal::config();
KConfigGroup unsafeConfig(unsafeConfigPtr, "Compositing");
if (unsafeConfig.readEntry("OpenGLIsUnsafe", false))
kWarning(1212) << "KWin has detected that your OpenGL library is unsafe to use";
else {
unsafeConfig.writeEntry("OpenGLIsUnsafe", true);
unsafeConfig.sync();
#ifndef KWIN_HAVE_OPENGLES
if (!CompositingPrefs::hasGlx()) {
unsafeConfig.writeEntry("OpenGLIsUnsafe", false);
unsafeConfig.sync();
kDebug(1212) << "No glx extensions available";
break;
}
#endif
m_scene = SceneOpenGL::createScene();
// TODO: Add 30 second delay to protect against screen freezes as well
unsafeConfig.writeEntry("OpenGLIsUnsafe", false);
unsafeConfig.sync();
if (m_scene && !m_scene->initFailed())
break; // -->
delete m_scene;
m_scene = NULL;
}
// Do not Fall back to XRender - it causes problems when selfcheck fails during startup, but works later on
break;
}
#ifdef KWIN_HAVE_XRENDER_COMPOSITING
case XRenderCompositing:
kDebug(1212) << "Initializing XRender compositing";
m_scene = new SceneXrender(Workspace::self());
break;
#endif
default:
kDebug(1212) << "No compositing enabled";
m_starting = false;
cm_selection->release();
return;
}
if (m_scene == NULL || m_scene->initFailed()) {
kError(1212) << "Failed to initialize compositing, compositing disabled";
kError(1212) << "Consult http://techbase.kde.org/Projects/KWin/4.0-release-notes#Setting_up";
delete m_scene;
m_scene = NULL;
m_starting = false;
cm_selection->release();
return;
}
m_xrrRefreshRate = KWin::currentRefreshRate();
fpsInterval = (options->maxFpsInterval() << 10);
if (m_scene->waitSyncAvailable()) { // if we do vsync, set the fps to the next multiple of the vblank rate
vBlankInterval = (1000 << 10) / m_xrrRefreshRate;
fpsInterval = qMax((fpsInterval / vBlankInterval) * vBlankInterval, vBlankInterval);
} else
vBlankInterval = 1 << 10; // no sync - DO NOT set "0", would cause div-by-zero segfaults.
m_timeSinceLastVBlank = fpsInterval - 1; // means "start now" - we don't have even a slight idea when the first vsync will occur
scheduleRepaint();
XCompositeRedirectSubwindows(display(), rootWindow(), CompositeRedirectManual);
new EffectsHandlerImpl(this, m_scene); // sets also the 'effects' pointer
connect(effects, SIGNAL(screenGeometryChanged(QSize)), SLOT(addRepaintFull()));
addRepaintFull();
foreach (Client * c, Workspace::self()->clientList())
c->setupCompositing();
foreach (Client * c, Workspace::self()->desktopList())
c->setupCompositing();
foreach (Unmanaged * c, Workspace::self()->unmanagedList())
c->setupCompositing();
emit compositingToggled(true);
m_starting = false;
if (m_releaseSelectionTimer.isActive()) {
m_releaseSelectionTimer.stop();
}
// render at least once
compositeTimer.stop();
performCompositing();
}
void Compositor::scheduleRepaint()
{
if (!compositeTimer.isActive())
setCompositeTimer();
}
void Compositor::finish()
{
if (!hasScene())
return;
m_finishing = true;
m_releaseSelectionTimer.start();
foreach (Client * c, Workspace::self()->clientList())
m_scene->windowClosed(c, NULL);
foreach (Client * c, Workspace::self()->desktopList())
m_scene->windowClosed(c, NULL);
foreach (Unmanaged * c, Workspace::self()->unmanagedList())
m_scene->windowClosed(c, NULL);
foreach (Deleted * c, Workspace::self()->deletedList())
m_scene->windowDeleted(c);
foreach (Client * c, Workspace::self()->clientList())
c->finishCompositing();
foreach (Client * c, Workspace::self()->desktopList())
c->finishCompositing();
foreach (Unmanaged * c, Workspace::self()->unmanagedList())
c->finishCompositing();
foreach (Deleted * c, Workspace::self()->deletedList())
c->finishCompositing();
XCompositeUnredirectSubwindows(display(), rootWindow(), CompositeRedirectManual);
delete effects;
effects = NULL;
delete m_scene;
m_scene = NULL;
compositeTimer.stop();
mousePollingTimer.stop();
repaints_region = QRegion();
for (ClientList::ConstIterator it = Workspace::self()->clientList().constBegin();
it != Workspace::self()->clientList().constEnd();
++it) {
// forward all opacity values to the frame in case there'll be other CM running
if ((*it)->opacity() != 1.0) {
NETWinInfo2 i(display(), (*it)->frameId(), rootWindow(), 0);
i.setOpacity(static_cast< unsigned long >((*it)->opacity() * 0xffffffff));
}
}
// discard all Deleted windows (#152914)
while (!Workspace::self()->deletedList().isEmpty())
Workspace::self()->deletedList().first()->discard(Allowed);
m_finishing = false;
emit compositingToggled(false);
}
void Compositor::releaseCompositorSelection()
{
if (hasScene() && !m_finishing) {
// compositor is up and running again, no need to release the selection
return;
}
if (m_starting) {
// currently still starting the compositor, it might fail, so restart the timer to test again
m_releaseSelectionTimer.start();
return;
}
if (m_finishing) {
// still shutting down, a restart might follow, so restart the timer to test again
m_releaseSelectionTimer.start();
return;
}
kDebug(1212) << "Releasing compositor selection";
cm_selection->release();
}
// OpenGL self-check failed, fallback to XRender
void Compositor::fallbackToXRenderCompositing()
{
finish();
KConfigGroup config(KGlobal::config(), "Compositing");
config.writeEntry("Backend", "XRender");
config.writeEntry("GraphicsSystem", "native");
config.sync();
if (Extensions::nonNativePixmaps()) { // must restart to change the graphicssystem
restartKWin("automatic graphicssystem change for XRender backend");
return;
} else {
options->setCompositingMode(XRenderCompositing);
setup();
}
}
void Compositor::slotConfigChanged()
{
if (!m_suspended) {
setup();
if (effects) // setupCompositing() may fail
effects->reconfigure();
addRepaintFull();
} else
finish();
}
void Compositor::slotReinitialize()
{
// Reparse config. Config options will be reloaded by setup()
KGlobal::config()->reparseConfiguration();
const QString graphicsSystem = KConfigGroup(KGlobal::config(), "Compositing").readEntry("GraphicsSystem", "");
if ((Extensions::nonNativePixmaps() && graphicsSystem == "native") ||
(!Extensions::nonNativePixmaps() && (graphicsSystem == "raster" || graphicsSystem == "opengl")) ) {
restartKWin("explicitly reconfigured graphicsSystem change");
return;
}
// Update any settings that can be set in the compositing kcm.
#ifdef KWIN_BUILD_SCREENEDGES
Workspace::self()->screenEdge()->update();
#endif
// Restart compositing
finish();
// resume compositing if suspended
m_suspended = false;
options->setCompositingInitialized(false);
setup();
if (effects) { // setup() may fail
effects->reconfigure();
}
}
// for the shortcut
void Compositor::slotToggleCompositing()
{
setCompositing(m_suspended);
}
// for the dbus call
void Compositor::toggleCompositing()
{
slotToggleCompositing();
if (m_suspended) {
// when disabled show a shortcut how the user can get back compositing
QString shortcut, message;
if (KAction* action = qobject_cast<KAction*>(Workspace::self()->actionCollection()->action("Suspend Compositing")))
shortcut = action->globalShortcut().primary().toString(QKeySequence::NativeText);
if (!shortcut.isEmpty()) {
// display notification only if there is the shortcut
message = i18n("Desktop effects have been suspended by another application.<br/>"
"You can resume using the '%1' shortcut.", shortcut);
Notify::raise(Notify::CompositingSuspendedDbus, message);
}
}
}
void Compositor::updateCompositeBlocking()
{
updateCompositeBlocking(NULL);
}
void Compositor::updateCompositeBlocking(Client *c)
{
if (c) { // if c == 0 we just check if we can resume
if (c->isBlockingCompositing()) {
if (!m_blocked) // do NOT attempt to call suspend(true); from within the eventchain!
QMetaObject::invokeMethod(this, "suspend", Qt::QueuedConnection);
m_blocked = true;
}
}
else if (m_blocked) { // lost a client and we're blocked - can we resume?
// NOTICE do NOT check for "m_Suspended" or "!compositing()"
// only "resume" if it was really disabled for a block
bool resume = true;
for (ClientList::ConstIterator it = Workspace::self()->clientList().constBegin(); it != Workspace::self()->clientList().constEnd(); ++it) {
if ((*it)->isBlockingCompositing()) {
resume = false;
break;
}
}
if (resume) { // do NOT attempt to call suspend(false); from within the eventchain!
m_blocked = false;
if (m_suspended)
QMetaObject::invokeMethod(this, "resume", Qt::QueuedConnection);
}
}
}
void Compositor::suspend()
{
if (m_suspended) {
return;
}
m_suspended = true;
finish();
}
void Compositor::resume()
{
if (!m_suspended && hasScene()) {
return;
}
m_suspended = false;
// signal toggled is eventually emitted from within setup
setup();
}
void Compositor::setCompositing(bool active)
{
if (active) {
resume();
} else {
suspend();
}
}
void Compositor::restart()
{
if (hasScene()) {
finish();
QTimer::singleShot(0, this, SLOT(setup()));
}
}
void Compositor::addRepaint(int x, int y, int w, int h)
{
if (!hasScene())
return;
repaints_region += QRegion(x, y, w, h);
scheduleRepaint();
}
void Compositor::addRepaint(const QRect& r)
{
if (!hasScene())
return;
repaints_region += r;
scheduleRepaint();
}
void Compositor::addRepaint(const QRegion& r)
{
if (!hasScene())
return;
repaints_region += r;
scheduleRepaint();
}
void Compositor::addRepaintFull()
{
if (!hasScene())
return;
repaints_region = QRegion(0, 0, displayWidth(), displayHeight());
scheduleRepaint();
}
void Compositor::timerEvent(QTimerEvent *te)
{
if (te->timerId() == compositeTimer.timerId()) {
compositeTimer.stop();
performCompositing();
} else
QObject::timerEvent(te);
}
static int s_pendingFlushes = 0;
void Compositor::performCompositing()
{
if (!isOverlayWindowVisible())
return; // nothing is visible anyway
bool pending = !repaints_region.isEmpty() || windowRepaintsPending();
if (pending)
s_pendingFlushes = 3;
else if (m_scene->hasPendingFlush())
--s_pendingFlushes;
else
s_pendingFlushes = 0;
if (s_pendingFlushes < 1) {
s_pendingFlushes = 0;
m_scene->idle();
// Note: It would seem here we should undo suspended unredirect, but when scenes need
// it for some reason, e.g. transformations or translucency, the next pass that does not
// need this anymore and paints normally will also reset the suspended unredirect.
// Otherwise the window would not be painted normally anyway.
return;
}
// create a list of all windows in the stacking order
ToplevelList windows = Workspace::self()->xStackingOrder();
foreach (EffectWindow * c, static_cast< EffectsHandlerImpl* >(effects)->elevatedWindows()) {
Toplevel* t = static_cast< EffectWindowImpl* >(c)->window();
windows.removeAll(t);
windows.append(t);
}
// skip windows that are not yet ready for being painted
// TODO ?
// this cannot be used so carelessly - needs protections against broken clients, the window
// should not get focus before it's displayed, handle unredirected windows properly and so on.
foreach (Toplevel *t, windows)
if (!t->readyForPainting())
windows.removeAll(t);
QRegion repaints = repaints_region;
// clear all repaints, so that post-pass can add repaints for the next repaint
repaints_region = QRegion();
m_timeSinceLastVBlank = m_scene->paint(repaints, windows);
// Trigger at least one more pass even if there would be nothing to paint, so that scene->idle()
// is called the next time. If there would be nothing pending, it will not restart the timer and
// checkCompositeTime() would restart it again somewhen later, called from functions that
// would again add something pending.
scheduleRepaint();
}
void Compositor::performMousePoll()
{
Workspace::self()->checkCursorPos();
}
bool Compositor::windowRepaintsPending() const
{
foreach (Toplevel * c, Workspace::self()->clientList())
if (!c->repaints().isEmpty())
return true;
foreach (Toplevel * c, Workspace::self()->desktopList())
if (!c->repaints().isEmpty())
return true;
foreach (Toplevel * c, Workspace::self()->unmanagedList())
if (!c->repaints().isEmpty())
return true;
foreach (Toplevel * c, Workspace::self()->deletedList())
if (!c->repaints().isEmpty())
return true;
return false;
}
void Compositor::setCompositeResetTimer(int msecs)
{
compositeResetTimer.start(msecs);
}
void Compositor::setCompositeTimer()
{
if (!hasScene()) // should not really happen, but there may be e.g. some damage events still pending
return;
uint padding = m_timeSinceLastVBlank << 10;
if (m_scene->waitSyncAvailable()) {
// TODO: make vBlankTime dynamic?!
// It's required because glXWaitVideoSync will *likely* block a full frame if one enters
// a retrace pass which can last a variable amount of time, depending on the actual screen
// Now, my ooold 19" CRT can do such retrace so that 2ms are entirely sufficient,
// while another ooold 15" TFT requires about 6ms
if (padding > fpsInterval) {
// we're at low repaints or spent more time in painting than the user wanted to wait for that frame
padding = vBlankInterval - (padding%vBlankInterval); // -> align to next vblank
} else { // -> align to the next maxFps tick
padding = ((vBlankInterval - padding%vBlankInterval) + (fpsInterval/vBlankInterval-1)*vBlankInterval);
// "remaining time of the first vsync" + "time for the other vsyncs of the frame"
}
if (padding < options->vBlankTime()) { // we'll likely miss this frame
m_nextFrameDelay = (padding + vBlankInterval) >> 10;
padding = (padding + vBlankInterval - options->vBlankTime()) >> 10; // so we add one
// qDebug() << "WE LOST A FRAME";
} else {
m_nextFrameDelay = padding >> 10;
padding = (padding - options->vBlankTime()) >> 10;
}
}
else // w/o vsync we just jump to the next demanded tick
// the "1" will ensure we don't block out the eventloop - the system's just not faster
// "0" would be sufficient, but the compositor isn't the WMs only task
m_nextFrameDelay = padding = (padding > (int)fpsInterval) ? 1 : ((fpsInterval - padding) >> 10);
compositeTimer.start(qMin(padding, 250u), this); // force 4fps minimum
}
void Compositor::startMousePolling()
{
mousePollingTimer.start(20); // 50Hz. TODO: How often do we really need to poll?
}
void Compositor::stopMousePolling()
{
mousePollingTimer.stop();
}
bool Compositor::isActive()
{
return !m_finishing && hasScene();
}
void Compositor::checkUnredirect()
{
checkUnredirect(false);
}
// force is needed when the list of windows changes (e.g. a window goes away)
void Compositor::checkUnredirect(bool force)
{
if (!hasScene() || m_scene->overlayWindow()->window() == None || !options->isUnredirectFullscreen())
return;
if (force)
forceUnredirectCheck = true;
if (!unredirectTimer.isActive())
unredirectTimer.start(0);
}
void Compositor::delayedCheckUnredirect()
{
if (!hasScene() || m_scene->overlayWindow()->window() == None || !options->isUnredirectFullscreen())
return;
ToplevelList list;
bool changed = forceUnredirectCheck;
foreach (Client * c, Workspace::self()->clientList())
list.append(c);
foreach (Unmanaged * c, Workspace::self()->unmanagedList())
list.append(c);
foreach (Toplevel * c, list) {
if (c->updateUnredirectedState())
changed = true;
}
// no desktops, no Deleted ones
if (!changed)
return;
forceUnredirectCheck = false;
// Cut out parts from the overlay window where unredirected windows are,
// so that they are actually visible.
QRegion reg(0, 0, displayWidth(), displayHeight());
foreach (Toplevel * c, list) {
if (c->unredirected())
reg -= c->geometry();
}
m_scene->overlayWindow()->setShape(reg);
}
bool Compositor::checkForOverlayWindow(WId w) const
{
if (!hasScene()) {
// no scene, so it cannot be the overlay window
return false;
}
if (!m_scene->overlayWindow()) {
// no overlay window, it cannot be the overlay
return false;
}
// and compare the window ID's
return w == m_scene->overlayWindow()->window();
}
WId Compositor::overlayWindow() const
{
if (!hasScene()) {
return None;
}
if (!m_scene->overlayWindow()) {
return None;
}
return m_scene->overlayWindow()->window();
}
bool Compositor::isOverlayWindowVisible() const
{
if (!hasScene()) {
return false;
}
if (!m_scene->overlayWindow()) {
return false;
}
return m_scene->overlayWindow()->isVisible();
}
void Compositor::setOverlayWindowVisibility(bool visible)
{
if (hasScene() && m_scene->overlayWindow()) {
m_scene->overlayWindow()->setVisibility(visible);
}
}
void Compositor::restartKWin(const QString &reason)
{
kDebug(1212) << "restarting kwin for:" << reason;
char cmd[1024]; // copied from crashhandler - maybe not the best way to do?
sprintf(cmd, "%s --replace &", QFile::encodeName(QCoreApplication::applicationFilePath()).constData());
system(cmd);
}
bool Compositor::isCompositingPossible() const
{
return CompositingPrefs::compositingPossible();
}
QString Compositor::compositingNotPossibleReason() const
{
return CompositingPrefs::compositingNotPossibleReason();
}
bool Compositor::isOpenGLBroken() const
{
return CompositingPrefs::openGlIsBroken();
}
QString Compositor::compositingType() const
{
if (!hasScene()) {
return "none";
}
switch (m_scene->compositingType()) {
case XRenderCompositing:
return "xrender";
case OpenGL1Compositing:
return "gl1";
case OpenGL2Compositing:
#ifdef KWIN_HAVE_OPENGLES
return "gles";
#else
return "gl2";
#endif
case NoCompositing:
default:
return "none";
}
}
/*****************************************************
* Workspace
****************************************************/
bool Workspace::compositing() const
{
return m_compositor && m_compositor->hasScene();
}
//****************************************
// Toplevel
//****************************************
bool Toplevel::setupCompositing()
{
if (!compositing())
return false;
damageRatio = 0.0;
if (damage_handle != None)
return false;
damage_handle = XDamageCreate(display(), frameId(), XDamageReportRawRectangles);
damage_region = QRegion(0, 0, width(), height());
effect_window = new EffectWindowImpl(this);
unredirect = false;
Compositor::self()->checkUnredirect(true);
Compositor::self()->scene()->windowAdded(this);
return true;
}
void Toplevel::finishCompositing()
{
damageRatio = 0.0;
if (damage_handle == None)
return;
Compositor::self()->checkUnredirect(true);
if (effect_window->window() == this) { // otherwise it's already passed to Deleted, don't free data
discardWindowPixmap();
delete effect_window;
}
XDamageDestroy(display(), damage_handle);
damage_handle = None;
damage_region = QRegion();
repaints_region = QRegion();
effect_window = NULL;
}
void Toplevel::discardWindowPixmap()
{
damageRatio = 0.0;
addDamageFull();
if (window_pix == None)
return;
XFreePixmap(display(), window_pix);
window_pix = None;
if (effectWindow() != NULL && effectWindow()->sceneWindow() != NULL)
effectWindow()->sceneWindow()->pixmapDiscarded();
}
Pixmap Toplevel::createWindowPixmap()
{
assert(compositing());
if (unredirected())
return None;
damageRatio = 0.0;
grabXServer();
KXErrorHandler err;
Pixmap pix = XCompositeNameWindowPixmap(display(), frameId());
// check that the received pixmap is valid and actually matches what we
// know about the window (i.e. size)
XWindowAttributes attrs;
if (!XGetWindowAttributes(display(), frameId(), &attrs)
|| err.error(false)
|| attrs.width != width() || attrs.height != height() || attrs.map_state != IsViewable) {
kDebug(1212) << "Creating window pixmap failed: " << this;
XFreePixmap(display(), pix);
pix = None;
}
ungrabXServer();
return pix;
}
// We must specify that the two events are a union so the compiler doesn't
// complain about strict aliasing rules.
typedef union {
XEvent e;
XDamageNotifyEvent de;
} EventUnion;
static QVector<QRect> damageRects;
void Toplevel::damageNotifyEvent(XDamageNotifyEvent* e)
{
if (damageRatio == 1.0) { // we know that we're completely damaged, no need to tell us again
while (XPending(display())) { // drop events
EventUnion e2;
if (XPeekEvent(display(), &e2.e) && e2.e.type == Extensions::damageNotifyEvent() &&
e2.e.xany.window == frameId()) {
XNextEvent(display(), &e2.e);
continue;
}
break;
}
return;
}
const float area = rect().width()*rect().height();
damageRects.reserve(16);
damageRects.erase(damageRects.begin(), damageRects.end());
damageRects << QRect(e->area.x, e->area.y, e->area.width, e->area.height);
// we can not easily say anything about the overall ratio since the new rects may intersect the present
float newDamageRatio = damageRects.last().width()*damageRects.last().height() / area;
// compress
while (XPending(display())) {
EventUnion e2;
if (XPeekEvent(display(), &e2.e) && e2.e.type == Extensions::damageNotifyEvent()
&& e2.e.xany.window == frameId()) {
XNextEvent(display(), &e2.e);
if (damageRatio >= 0.8 || newDamageRatio > 0.8 || damageRects.count() > 15) {
// If there are too many damage events in the queue, just discard them
// and damage the whole window. Otherwise the X server can just overload
// us with a flood of damage events. Should be probably optimized
// in the X server, as this is rather lame.
newDamageRatio = 1.0;
damageRects.clear();
continue;
}
damageRects << QRect(e2.de.area.x, e2.de.area.y, e2.de.area.width, e2.de.area.height);
newDamageRatio += damageRects.last().width()*damageRects.last().height() / area;
continue;
}
break;
}
if ((damageRects.count() == 1 && damageRects.last() == rect()) ||
(damageRects.isEmpty() && newDamageRatio == 1.0)) {
addDamageFull();
} else {
foreach (const QRect &r, damageRects)
addDamage(r);
}
}
bool Toplevel::compositing() const
{
Compositor *c = Compositor::self();
return c && c->hasScene();
}
void Client::damageNotifyEvent(XDamageNotifyEvent* e)
{
#ifdef HAVE_XSYNC
if (syncRequest.isPending && isResize())
return;
if (!ready_for_painting) { // avoid "setReadyForPainting()" function calling overhead
if (syncRequest.counter == None) // cannot detect complete redraw, consider done now
setReadyForPainting();
}
#else
setReadyForPainting();
#endif
Toplevel::damageNotifyEvent(e);
}
void Toplevel::addDamage(const QRect& r)
{
addDamage(r.x(), r.y(), r.width(), r.height());
}
void Toplevel::addDamage(int x, int y, int w, int h)
{
if (!compositing())
return;
QRect r(x, y, w, h);
// resizing the decoration may lag behind a bit and when shrinking there
// may be a damage event coming with size larger than the current window size
r &= rect();
if (r.isEmpty())
return;
damage_region += r;
int damageArea = 0;
foreach (const QRect &r2, damage_region.rects())
damageArea += r2.width()*r2.height();
damageRatio = float(damageArea) / float(rect().width()*rect().height());
repaints_region += r;
emit damaged(this, r);
// discard lanczos texture
if (effect_window) {
QVariant cachedTextureVariant = effect_window->data(LanczosCacheRole);
if (cachedTextureVariant.isValid()) {
GLTexture *cachedTexture = static_cast< GLTexture*>(cachedTextureVariant.value<void*>());
delete cachedTexture;
cachedTexture = 0;
effect_window->setData(LanczosCacheRole, QVariant());
}
}
}
void Toplevel::addDamageFull()
{
if (!compositing())
return;
damage_region = rect();
repaints_region = rect();
damageRatio = 1.0;
emit damaged(this, rect());
// discard lanczos texture
if (effect_window) {
QVariant cachedTextureVariant = effect_window->data(LanczosCacheRole);
if (cachedTextureVariant.isValid()) {
GLTexture *cachedTexture = static_cast< GLTexture*>(cachedTextureVariant.value<void*>());
delete cachedTexture;
cachedTexture = 0;
effect_window->setData(LanczosCacheRole, QVariant());
}
}
}
void Toplevel::resetDamage(const QRect& r)
{
damage_region -= r;
int damageArea = 0;
foreach (const QRect &r2, damage_region.rects())
damageArea += r2.width()*r2.height();
damageRatio = float(damageArea) / float(rect().width()*rect().height());
}
void Toplevel::addRepaint(const QRect& r)
{
if (!compositing()) {
return;
}
repaints_region += r;
emit needsRepaint();
}
void Toplevel::addRepaint(int x, int y, int w, int h)
{
QRect r(x, y, w, h);
addRepaint(r);
}
void Toplevel::addRepaint(const QRegion& r)
{
if (!compositing()) {
return;
}
repaints_region += r;
emit needsRepaint();
}
void Toplevel::addLayerRepaint(const QRect& r)
{
if (!compositing()) {
return;
}
layer_repaints_region += r;
emit needsRepaint();
}
void Toplevel::addLayerRepaint(int x, int y, int w, int h)
{
QRect r(x, y, w, h);
addLayerRepaint(r);
}
void Toplevel::addLayerRepaint(const QRegion& r)
{
if (!compositing())
return;
layer_repaints_region += r;
emit needsRepaint();
}
void Toplevel::addRepaintFull()
{
repaints_region = visibleRect().translated(-pos());
emit needsRepaint();
}
void Toplevel::resetRepaints()
{
repaints_region = QRegion();
layer_repaints_region = QRegion();
}
void Toplevel::addWorkspaceRepaint(int x, int y, int w, int h)
{
addWorkspaceRepaint(QRect(x, y, w, h));
}
void Toplevel::addWorkspaceRepaint(const QRect& r2)
{
if (!compositing())
return;
Compositor::self()->addRepaint(r2);
}
bool Toplevel::updateUnredirectedState()
{
assert(compositing());
bool should = shouldUnredirect() && !unredirectSuspend && !shape() && !hasAlpha() && opacity() == 1.0 &&
!static_cast<EffectsHandlerImpl*>(effects)->activeFullScreenEffect();
if (should && !unredirect) {
unredirect = true;
kDebug(1212) << "Unredirecting:" << this;
XCompositeUnredirectWindow(display(), frameId(), CompositeRedirectManual);
return true;
} else if (!should && unredirect) {
unredirect = false;
kDebug(1212) << "Redirecting:" << this;
XCompositeRedirectWindow(display(), frameId(), CompositeRedirectManual);
discardWindowPixmap();
return true;
}
return false;
}
void Toplevel::suspendUnredirect(bool suspend)
{
if (unredirectSuspend == suspend)
return;
unredirectSuspend = suspend;
Compositor::self()->checkUnredirect();
}
//****************************************
// Client
//****************************************
bool Client::setupCompositing()
{
if (!Toplevel::setupCompositing()){
return false;
}
updateVisibility(); // for internalKeep()
if (isManaged()) {
// only create the decoration when a client is managed
updateDecoration(true, true);
}
return true;
}
void Client::finishCompositing()
{
Toplevel::finishCompositing();
updateVisibility();
if (!deleting) {
// only recreate the decoration if we are not shutting down completely
updateDecoration(true, true);
}
// for safety in case KWin is just resizing the window
s_haveResizeEffect = false;
}
bool Client::shouldUnredirect() const
{
if (isActiveFullScreen()) {
ToplevelList stacking = workspace()->xStackingOrder();
for (int pos = stacking.count() - 1;
pos >= 0;
--pos) {
Toplevel* c = stacking.at(pos);
if (c == this) // is not covered by any other window, ok to unredirect
return true;
if (c->geometry().intersects(geometry()))
return false;
}
abort();
}
return false;
}
//****************************************
// Unmanaged
//****************************************
bool Unmanaged::shouldUnredirect() const
{
// the pixmap is needed for the login effect, a nicer solution would be the login effect increasing
// refcount for the window pixmap (which would prevent unredirect), avoiding this hack
if (resourceClass() == "ksplashx"
|| resourceClass() == "ksplashsimple"
|| resourceClass() == "ksplashqml"
)
return false;
// it must cover whole display or one xinerama screen, and be the topmost there
if (geometry() == workspace()->clientArea(FullArea, geometry().center(), workspace()->currentDesktop())
|| geometry() == workspace()->clientArea(ScreenArea, geometry().center(), workspace()->currentDesktop())) {
ToplevelList stacking = workspace()->xStackingOrder();
for (int pos = stacking.count() - 1;
pos >= 0;
--pos) {
Toplevel* c = stacking.at(pos);
if (c == this) // is not covered by any other window, ok to unredirect
return true;
if (c->geometry().intersects(geometry()))
return false;
}
abort();
}
return false;
}
//****************************************
// Deleted
//****************************************
bool Deleted::shouldUnredirect() const
{
return false;
}
} // namespace
Reference in a new issue View git blame Copy permalink