91 lines
3.5 KiB
C++
91 lines
3.5 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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You can Freely distribute this program under the GNU General Public
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License. See the file "COPYING" for the exact licensing terms.
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******************************************************************/
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#include "scene_xrender.h"
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#ifdef HAVE_XRENDER
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#include "toplevel.h"
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namespace KWinInternal
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{
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//****************************************
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// SceneXrender
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//****************************************
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SceneXrender::SceneXrender( Workspace* ws )
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: Scene( ws )
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{
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format = XRenderFindVisualFormat( display(), DefaultVisual( display(), DefaultScreen( display())));
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XRenderPictureAttributes pa;
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pa.subwindow_mode = IncludeInferiors;
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front = XRenderCreatePicture( display(), rootWindow(), format, CPSubwindowMode, &pa );
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createBuffer();
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}
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SceneXrender::~SceneXrender()
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{
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XRenderFreePicture( display(), front );
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XRenderFreePicture( display(), buffer );
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}
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// TODO handle xrandr changes
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void SceneXrender::createBuffer()
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{
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if( buffer != None )
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XRenderFreePicture( display(), buffer );
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Pixmap pixmap = XCreatePixmap( display(), rootWindow(), displayWidth(), displayHeight(), QX11Info::appDepth());
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buffer = XRenderCreatePicture( display(), pixmap, format, 0, 0 );
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XFreePixmap( display(), pixmap ); // The picture owns the pixmap now
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}
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void SceneXrender::paint( XserverRegion damage )
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{
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// Use the damage region as the clip region for the root window
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XFixesSetPictureClipRegion( display(), front, 0, 0, damage );
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// Draw each opaque window top to bottom, subtracting the bounding rect of
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// each window from the clip region after it's been drawn.
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for( int i = windows.count() - 1;
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i >= 0;
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--i )
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{
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Toplevel* c = windows[ i ];
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XWindowAttributes attrs;
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if( !XGetWindowAttributes( display(), c->handle(), &attrs ))
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continue;
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if( XRenderPictFormat* clientFormat = XRenderFindVisualFormat( display(), attrs.visual ))
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{
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Picture picture = XRenderCreatePicture( display(), c->windowPixmap(), clientFormat, 0, 0 );
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// Set the clip region for the buffer to the damage region, and
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// subtract the clients shape from the damage region
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XFixesSetPictureClipRegion( display(), buffer, 0, 0, damage );
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XserverRegion cr = XFixesCreateRegionFromWindow( display(), c->handle(), WindowRegionBounding );
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XFixesTranslateRegion( display(), cr, c->x(), c->y());
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XFixesSubtractRegion( display(), damage, damage, cr );
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XFixesDestroyRegion( display(), cr );
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XRenderComposite( display(), PictOpSrc, picture, None, buffer, 0, 0, 0, 0,
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c->x(), c->y(), c->width(), c->height());
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XRenderFreePicture( display(), picture );
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}
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}
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// fill background
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XFixesSetPictureClipRegion( display(), buffer, 0, 0, damage );
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XRenderColor col = { 0xffff, 0xffff, 0xffff, 0xffff };
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XRenderFillRectangle( display(), PictOpSrc, buffer, &col, 0, 0, displayWidth(), displayHeight());
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// copy composed buffer to the root window
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XFixesSetPictureClipRegion( display(), buffer, 0, 0, None );
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XRenderComposite( display(), PictOpSrc, buffer, None, front, 0, 0, 0, 0, 0, 0, displayWidth(), displayHeight());
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XFlush( display());
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}
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} // namespace
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#endif
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