105 lines
3.2 KiB
C++
105 lines
3.2 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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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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{
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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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{
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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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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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