2d954a6bf3
The Scene has always been created and destroyed inside what is now the split out compositor. Which means it is actually owned by the Compositor. The static pointer has never been needed inside KWin core. Access to the Scene is not required for the Window Manager. The only real usage is in the EffectsHandlerImpl and in utils.h to provide a convenient way to figure out whether compositing is currently active (scene != NULL). The EffectsHandlerImpl gets also created by the Compositor after the Scene is created and gets deleted just before the Scene gets deleted. This allows to inject the Scene into the EffectsHandlerImpl to resolve the static access in this class. The convenient way to access the compositing() in utils.h had to go. To provide the same feature the Compositor provides a hasScene() access which has the same behavior as the old method. In order to keep the code changes small in Workspace and Toplevel a new method compositing() is defined which properly resolves the state. A disadvantage is that this can no longer be inlined and consists of several method calls and pointer checks.
143 lines
4.3 KiB
C++
143 lines
4.3 KiB
C++
/*****************************************************************
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This file is part of the KDE project.
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Copyright (C) 2009 Lubos Lunak <l.lunak@kde.org>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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******************************************************************/
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#include "paintredirector.h"
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#include "workspace.h"
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#include <kdebug.h>
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#include <qevent.h>
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#include <qpainter.h>
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#include <qmath.h>
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namespace KWin
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{
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PaintRedirector::PaintRedirector(QWidget* w)
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: widget(w)
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, recursionCheck(false)
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{
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added(w);
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}
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QPixmap PaintRedirector::performPendingPaint()
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{
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//qDebug() << "### performing paint, pending:" << pending.boundingRect();
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const QSize size = pending.boundingRect().size();
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if (scratch.width() < size.width() || scratch.height() < size.height()) {
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int w = (size.width() + 128) & ~128;
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int h = (size.height() + 128) & ~128;
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scratch = QPixmap(qMax(scratch.width(), w), qMax(scratch.height(), h));
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}
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scratch.fill(Qt::transparent);
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recursionCheck = true;
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// do not use DrawWindowBackground, it's ok to be transparent
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widget->render(&scratch, QPoint(), pending.boundingRect(), QWidget::DrawChildren);
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recursionCheck = false;
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pending = QRegion();
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scheduled = QRegion();
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cleanupTimer.start(2000, this);
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return scratch;
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}
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bool PaintRedirector::isToolTip(QWidget *object) const
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{
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// ### We need a more reliable way of doing this
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return object->windowFlags() & Qt::ToolTip;
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}
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bool PaintRedirector::eventFilter(QObject* o, QEvent* e)
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{
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switch(e->type()) {
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case QEvent::ChildAdded: {
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QChildEvent* c = static_cast< QChildEvent* >(e);
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if (c->child()->isWidgetType() && !isToolTip(static_cast< QWidget* >(c->child())))
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added(static_cast< QWidget* >(c->child()));
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break;
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}
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case QEvent::ChildRemoved: {
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QChildEvent* c = static_cast< QChildEvent* >(e);
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if (c->child()->isWidgetType())
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removed(static_cast< QWidget* >(c->child()));
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break;
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}
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case QEvent::Paint: {
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if (Workspace::self()->compositingActive()) {
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return false;
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}
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if (!recursionCheck) {
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QPaintEvent* pe = static_cast< QPaintEvent* >(e);
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QWidget* w = static_cast< QWidget* >(o);
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pending |= pe->region().translated(w->mapTo(widget, QPoint(0, 0)));
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scheduled = pending;
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emit paintPending();
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return true; // filter out
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}
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}
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default:
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break;
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}
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return false;
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}
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QRegion PaintRedirector::pendingRegion() const
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{
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return pending;
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}
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QRegion PaintRedirector::scheduledRepaintRegion()
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{
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QRegion tempRegion = scheduled;
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scheduled = QRegion();
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return tempRegion;
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}
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void PaintRedirector::added(QWidget* w)
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{
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w->installEventFilter(this);
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foreach (QObject * o, w->children()) {
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if (o->isWidgetType() && !isToolTip(static_cast< QWidget* >(o)))
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added(static_cast< QWidget* >(o));
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}
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}
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void PaintRedirector::removed(QWidget* w)
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{
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foreach (QObject * o, w->children()) {
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if (o->isWidgetType())
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removed(static_cast< QWidget* >(o));
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}
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w->installEventFilter(this);
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}
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void PaintRedirector::timerEvent(QTimerEvent* event)
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{
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if (event->timerId() == cleanupTimer.timerId()) {
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cleanupTimer.stop();
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scratch = QPixmap();
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}
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}
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} // namespace
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#include "paintredirector.moc"
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