/******************************************************************** KWin - the KDE window manager This file is part of the KDE project. Copyright (C) 2007 Lubos Lunak This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . *********************************************************************/ #include "showpaint.h" #include #ifdef KWIN_HAVE_OPENGL_COMPOSITING #include #endif #ifdef KWIN_HAVE_XRENDER_COMPOSITING #include #include #endif #include #include namespace KWin { KWIN_EFFECT( showpaint, ShowPaintEffect ) static QColor colors[] = { Qt::red, Qt::green, Qt::blue, Qt::cyan, Qt::magenta, Qt::yellow, Qt::gray }; ShowPaintEffect::ShowPaintEffect() : color_index( 0 ) { } void ShowPaintEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data ) { painted = QRegion(); effects->paintScreen( mask, region, data ); #ifdef KWIN_HAVE_OPENGL_COMPOSITING if( effects->compositingType() == OpenGLCompositing) paintGL(); #endif #ifdef KWIN_HAVE_XRENDER_COMPOSITING if( effects->compositingType() == XRenderCompositing) paintXrender(); #endif if( ++color_index == sizeof( colors ) / sizeof( colors[ 0 ] )) color_index = 0; } void ShowPaintEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data ) { painted |= region; effects->paintWindow( w, mask, region, data ); } // TODO I think we need some kind of generic paintRect() void ShowPaintEffect::paintGL() { #ifdef KWIN_HAVE_OPENGL_COMPOSITING glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT ); glEnable( GL_BLEND ); glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); float alpha = 0.2; const QColor& color = colors[ color_index ]; glColor4f( color.red() / 255., color.green() / 255., color.blue() / 255., alpha ); glBegin( GL_QUADS ); foreach( QRect r, painted.rects()) { glVertex2i( r.x(), r.y()); glVertex2i( r.x() + r.width(), r.y()); glVertex2i( r.x() + r.width(), r.y() + r.height()); glVertex2i( r.x(), r.y() + r.height()); } glEnd(); glPopAttrib(); #endif } void ShowPaintEffect::paintXrender() { #ifdef KWIN_HAVE_XRENDER_COMPOSITING XRenderColor col; int alpha = 0.2; const QColor& color = colors[ color_index ]; col.alpha = int( alpha * 0xffff ); col.red = int( alpha * 0xffff * color.red() / 255 ); col.green = int( alpha * 0xffff * color.green() / 255 ); col.blue= int( alpha * 0xffff * color.blue() / 255 ); foreach( QRect r, painted.rects()) XRenderFillRectangle( display(), PictOpOver, effects->xrenderBufferPicture(), &col, r.x(), r.y(), r.width(), r.height()); #endif } } // namespace