106 lines
3.1 KiB
C++
106 lines
3.1 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) 2006 Lubos Lunak <l.lunak@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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/*
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This is very simple compositing code using only plain X. It doesn't use any effects
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or anything like that, it merely draws everything as it would be visible without
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compositing. It was the first compositing code in KWin and is usable only for testing
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and as the very simple "this is how it works".
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*/
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#include "scene_basic.h"
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#include "utils.h"
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#include "client.h"
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namespace KWin
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{
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SceneBasic::SceneBasic(Workspace* ws)
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: Scene(ws)
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{
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}
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SceneBasic::~SceneBasic()
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{
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}
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void SceneBasic::paint(QRegion, ToplevelList windows)
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{
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QTime t = QTime::currentTime();
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Pixmap composite_pixmap = XCreatePixmap(display(), rootWindow(), displayWidth(), displayHeight(), DefaultDepth(display(), DefaultScreen(display())));
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XGCValues val;
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val.foreground = WhitePixel(display(), DefaultScreen(display()));
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val.subwindow_mode = IncludeInferiors;
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GC gc = XCreateGC(display(), composite_pixmap, GCForeground | GCSubwindowMode, &val);
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XFillRectangle(display(), composite_pixmap, gc, 0, 0, displayWidth(), displayHeight());
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for (ToplevelList::ConstIterator it = windows.constBegin();
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it != windows.constEnd();
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++it) {
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QRect r = (*it)->geometry().intersected(QRect(0, 0, displayWidth(), displayHeight()));
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if (!r.isEmpty()) {
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Pixmap pix = (*it)->windowPixmap();
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if (pix == None)
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continue;
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XCopyArea(display(), pix, composite_pixmap, gc,
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qMax(0, -(*it)->x()), qMax(0, -(*it)->y()), r.width(), r.height(), r.x(), r.y());
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}
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}
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lastRenderTime = t.elapsed();
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XCopyArea(display(), composite_pixmap, rootWindow(), gc, 0, 0, displayWidth(), displayHeight(), 0, 0);
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XFreeGC(display(), gc);
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XFreePixmap(display(), composite_pixmap);
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XFlush(display());
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}
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bool SceneBasic::initFailed() const
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{
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return false;
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}
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// These functions are not used at all, SceneBasic
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// is not using inherited functionality.
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void SceneBasic::paintBackground(QRegion)
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{
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}
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void SceneBasic::windowGeometryShapeChanged(Toplevel*)
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{
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}
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void SceneBasic::windowOpacityChanged(Toplevel*)
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{
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}
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void SceneBasic::windowAdded(Toplevel*)
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{
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}
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void SceneBasic::windowClosed(Toplevel*, Deleted*)
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{
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}
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void SceneBasic::windowDeleted(Deleted*)
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{
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}
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} // namespace
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