100 lines
3.3 KiB
C++
100 lines
3.3 KiB
C++
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/********************************************************************
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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) 2009 Lucas Murray <lmurray@undefinedfire.com>
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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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#include "highlightwindow.h"
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#include <kdebug.h>
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namespace KWin
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{
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KWIN_EFFECT( highlightwindow, HighlightWindowEffect )
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HighlightWindowEffect::HighlightWindowEffect()
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: m_highlightedWindow( NULL )
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, m_monitorWindow( NULL )
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{
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m_atom = XInternAtom( display(), "_KDE_WINDOW_HIGHLIGHT", False );
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effects->registerPropertyType( m_atom, true );
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// Announce support by creating a dummy version on the root window
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unsigned char dummy = 0;
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XChangeProperty( display(), rootWindow(), m_atom, m_atom, 8, PropModeReplace, &dummy, 1 );
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}
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HighlightWindowEffect::~HighlightWindowEffect()
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{
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XDeleteProperty( display(), rootWindow(), m_atom );
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effects->registerPropertyType( m_atom, false );
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}
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void HighlightWindowEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
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{
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// If we are highlighting a window set the translucent flag to all others
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if( m_highlightedWindow && m_highlightedWindow != w && m_monitorWindow != w && w->isNormalWindow() )
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data.mask |= PAINT_WINDOW_TRANSLUCENT;
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effects->prePaintWindow( w, data, time );
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}
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void HighlightWindowEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
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{
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if( m_highlightedWindow && m_highlightedWindow != w && m_monitorWindow != w && w->isNormalWindow() )
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data.opacity *= 0.15; // TODO: Fade out
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effects->paintWindow( w, mask, region, data );
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}
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void HighlightWindowEffect::windowAdded( EffectWindow* w )
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{
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propertyNotify( w, m_atom ); // Check initial value
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}
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void HighlightWindowEffect::windowDeleted( EffectWindow* w )
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{
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if( m_monitorWindow == w )
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{ // The monitoring window was destroyed
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m_monitorWindow = NULL;
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m_highlightedWindow = NULL;
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}
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}
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void HighlightWindowEffect::propertyNotify( EffectWindow* w, long a )
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{
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if( a != m_atom )
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return; // Not our atom
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QByteArray byteData = w->readProperty( m_atom, m_atom, 32 );
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if( byteData.length() < 1 )
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return; // Invalid length
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long* data = reinterpret_cast<long*>( byteData.data() );
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if( !data[0] )
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{ // Purposely clearing highlight
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m_monitorWindow = NULL;
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m_highlightedWindow = NULL;
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return;
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}
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m_monitorWindow = w;
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m_highlightedWindow = effects->findWindow( data[0] );
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if( !m_highlightedWindow )
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kDebug(1212) << "Invalid window targetted for highlight. Requested:" << data[0];
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}
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} // namespace
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