112 lines
3.3 KiB
C++
112 lines
3.3 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) 2007 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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#include "showpaint.h"
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#include <kwinconfig.h>
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#ifdef KWIN_HAVE_OPENGL_COMPOSITING
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#include <GL/gl.h>
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#endif
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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#include <X11/Xlib.h>
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#include <X11/extensions/Xrender.h>
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#endif
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#include <math.h>
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#include <qcolor.h>
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namespace KWin
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{
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KWIN_EFFECT( showpaint, ShowPaintEffect )
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static QColor colors[] = { Qt::red, Qt::green, Qt::blue, Qt::cyan, Qt::magenta,
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Qt::yellow, Qt::gray };
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ShowPaintEffect::ShowPaintEffect()
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: color_index( 0 )
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{
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}
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void ShowPaintEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
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{
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painted = QRegion();
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effects->paintScreen( mask, region, data );
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#ifdef KWIN_HAVE_OPENGL_COMPOSITING
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if( effects->compositingType() == OpenGLCompositing)
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paintGL();
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#endif
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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if( effects->compositingType() == XRenderCompositing)
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paintXrender();
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#endif
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if( ++color_index == sizeof( colors ) / sizeof( colors[ 0 ] ))
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color_index = 0;
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}
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void ShowPaintEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
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{
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painted |= region;
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effects->paintWindow( w, mask, region, data );
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}
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// TODO I think we need some kind of generic paintRect()
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void ShowPaintEffect::paintGL()
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{
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#ifdef KWIN_HAVE_OPENGL_COMPOSITING
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glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT );
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glEnable( GL_BLEND );
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
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float alpha = 0.2;
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const QColor& color = colors[ color_index ];
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glColor4f( color.red() / 255., color.green() / 255., color.blue() / 255., alpha );
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glBegin( GL_QUADS );
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foreach( const QRect &r, painted.rects())
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{
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glVertex2i( r.x(), r.y());
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glVertex2i( r.x() + r.width(), r.y());
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glVertex2i( r.x() + r.width(), r.y() + r.height());
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glVertex2i( r.x(), r.y() + r.height());
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}
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glEnd();
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glPopAttrib();
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#endif
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}
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void ShowPaintEffect::paintXrender()
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{
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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XRenderColor col;
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float alpha = 0.2;
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const QColor& color = colors[ color_index ];
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col.alpha = int( alpha * 0xffff );
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col.red = int( alpha * 0xffff * color.red() / 255 );
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col.green = int( alpha * 0xffff * color.green() / 255 );
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col.blue= int( alpha * 0xffff * color.blue() / 255 );
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foreach( const QRect &r, painted.rects())
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XRenderFillRectangle( display(), PictOpOver, effects->xrenderBufferPicture(),
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&col, r.x(), r.y(), r.width(), r.height());
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#endif
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}
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} // namespace
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