7a1fe42be0
The refactoring of Compositor starting with b1739c3 caused some regressions due to variables in Workspace and Compositor not being initialized. Furthermore there was a boolean logic error in PaintRedirector causing the decorations not to paint. BUG: 305875
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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