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/* This file is part of the KDE libraries
Copyright (C) 2003 Fredrik Höglund <fredrik@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 <qimage.h>
#include <qfile.h>
#include <kdemacros.h>
#include "cursorcreator.h"
#include <X11/Xlib.h>
#include <X11/Xcursor/Xcursor.h>
extern "C"
{
KDE_EXPORT ThumbCreator *new_creator()
{
return new CursorCreator;
}
}
bool CursorCreator::create( const QString &path, int width, int height, QImage &img )
{
XcursorImage *cursor = XcursorFilenameLoadImage(
QFile::encodeName( path ).data(),
width > height ? height : width );
if ( cursor ) {
img = QImage( reinterpret_cast<uchar *>( cursor->pixels ),
cursor->width, cursor->height, 32,
NULL, 0, QImage::BigEndian );
img.setAlphaBuffer( true );
// Convert the image to non-premultiplied alpha
Q_UINT32 *pixels = reinterpret_cast<Q_UINT32 *>( img.bits() );
for ( int i = 0; i < (img.width() * img.height()); i++ ) {
float alpha = qAlpha( pixels[i] ) / 255.0;
if ( alpha > 0.0 && alpha < 1.0 )
pixels[i] = qRgba( int( qRed(pixels[i]) / alpha ),
int( qGreen(pixels[i]) / alpha ),
int( qBlue(pixels[i]) / alpha ),
qAlpha(pixels[i]) );
}
// Create a deep copy of the image so the image data is preserved
img = img.copy();
XcursorImageDestroy( cursor );
return true;
}
return false;
}
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