Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 69 insertions, 0 deletions

diff --git a/kioslave/thumbnail/cursorcreator.cpp b/kioslave/thumbnail/cursorcreator.cpp
new file mode 100644
index 000000000..0b1470bd6
--- /dev/null
+++ b/kioslave/thumbnail/cursorcreator.cpp
@@ -0,0 +1,69 @@
+/*  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;
+}
+