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/*
This file is part of the KDE libraries
Copyright (C) 2008 Lubos Lunak (l.lunak@kde.org)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "kxutils.h"
#include <config.h>
#ifdef Q_WS_X11
#include <kxerrorhandler.h>
#include <qbitmap.h>
#include <qpixmap.h>
#ifdef HAVE_XRENDER
#include <X11/extensions/Xrender.h>
#endif
namespace KXUtils
{
// Create QPixmap from X pixmap. Take care of different depths if needed.
QPixmap createPixmapFromHandle( WId pixmap, WId pixmap_mask )
{
Display* dpy = QX11Info::display();
KXErrorHandler handler;
Window root;
int x, y;
unsigned int w = 0;
unsigned int h = 0;
unsigned int border_w, depth;
if( XGetGeometry( dpy, pixmap, &root, &x, &y, &w, &h, &border_w, &depth )
&& !handler.error( false ) && w > 0 && h > 0 )
{
QPixmap pm( w, h );
// Always detach before doing something behind QPixmap's back.
pm.detach();
#ifdef HAVE_XRENDER
if( int( depth ) != pm.depth() && depth != 1 && pm.x11PictureHandle() != None )
{
XRenderPictFormat tmpl;
tmpl.type = PictTypeDirect;
tmpl.depth = depth;
XRenderPictFormat* format = XRenderFindFormat( dpy, PictFormatType | PictFormatDepth, &tmpl, 0 );
Picture pic = XRenderCreatePicture( dpy, pixmap, format, 0, NULL );
XRenderComposite( dpy, PictOpSrc, pic, None, pm.x11PictureHandle(), 0, 0, 0, 0, 0, 0, w, h );
XRenderFreePicture( dpy, pic );
}
else
#endif
{ // the normal X11 way
GC gc = XCreateGC( dpy, pixmap, 0, NULL );
if( depth == 1 )
{
QBitmap bm( w, h );
XCopyArea( dpy, pixmap, bm.handle(), gc, 0, 0, w, h, 0, 0 );
pm = bm;
}
else // depth == pm.depth()
XCopyArea( dpy, pixmap, pm.handle(), gc, 0, 0, w, h, 0, 0 );
XFreeGC( dpy, gc );
}
if( pixmap_mask != None )
{
QBitmap bm( w, h );
bm.detach();
GC gc = XCreateGC( dpy, pixmap_mask, 0, NULL );
XCopyArea( dpy, pixmap_mask, bm.handle(), gc, 0, 0, w, h, 0, 0 );
pm.setMask( bm );
XFreeGC( dpy, gc );
}
if( !handler.error( true )) // sync, check for error
return pm;
}
return QPixmap();
}
// Functions for X timestamp comparing. For Time being 32bit they're fairly simple
// (the #if 0 part), but on 64bit architectures Time is 64bit unsigned long,
// so there special care needs to be taken to always use only the lower 32bits.
#if 0
int timestampCompare( Time time1, Time time2 ) // like strcmp()
{
if( time1 == time2 )
return 0;
return ( time1 - time2 ) < 0x7fffffffU ? 1 : -1; // time1 > time2 -> 1, handle wrapping
}
Time timestampDiff( Time time1, Time time2 ) // returns time2 - time1
{ // no need to handle wrapping?
return time2 - time1;
}
#else
int timestampCompare( unsigned long time1_, unsigned long time2_ ) // like strcmp()
{
quint32 time1 = time1_;
quint32 time2 = time2_;
if( time1 == time2 )
return 0;
return quint32( time1 - time2 ) < 0x7fffffffU ? 1 : -1; // time1 > time2 -> 1, handle wrapping
}
int timestampDiff( unsigned long time1_, unsigned long time2_ ) // returns time2 - time1
{ // no need to handle wrapping?
quint32 time1 = time1_;
quint32 time2 = time2_;
return quint32( time2 - time1 );
}
#endif
} // namespace
#endif
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