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, 85 insertions, 0 deletions

diff --git a/kioslave/thumbnail/exrcreator.cpp b/kioslave/thumbnail/exrcreator.cpp
new file mode 100644
index 000000000..ac2bc3a71
--- /dev/null
+++ b/kioslave/thumbnail/exrcreator.cpp
@@ -0,0 +1,85 @@
+/*  This file is part of the KDE libraries
+    Copyright (C) 2004 Brad Hards <bradh@frogmouth.net>
+
+    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 <kimageio.h>
+#include <kdebug.h>
+#include <kconfig.h>
+#include <kglobal.h>
+#include <qfile.h>
+
+#include <ImfInputFile.h>
+#include <ImfPreviewImage.h>
+
+#include "exrcreator.h"
+
+extern "C"
+{
+    KDE_EXPORT ThumbCreator *new_creator()
+    {
+        return new EXRCreator;
+    }
+}
+
+bool EXRCreator::create(const QString &path, int, int, QImage &img)
+{
+    Imf::InputFile in ( path.ascii() );
+    const Imf::Header &h = in.header();
+
+    if ( h.hasPreviewImage() ) {
+	kdDebug() << "EXRcreator - using preview" << endl;
+	const Imf::PreviewImage &preview = in.header().previewImage();
+	QImage qpreview(preview.width(), preview.height(), 32, 0, QImage::BigEndian);
+	for ( unsigned int y=0; y < preview.height(); y++ ) {
+	    for ( unsigned int x=0; x < preview.width(); x++ ) {
+		const Imf::PreviewRgba &q = preview.pixels()[x+(y*preview.width())];
+		qpreview.setPixel( x, y, qRgba(q.r, q.g, q.b, q.a) );
+	    }
+	}
+	img = qpreview;
+	return true;
+    } else {
+        // do it the hard way
+	// We ignore maximum size when just extracting the thumnail
+	// from the header, but it is very expensive to render large
+	// EXR images just to turn it into an icon, so we go back
+	// to honouring it in here.
+	kdDebug() << "EXRcreator - using original image" << endl;
+	KConfig * config = KGlobal::config();
+	KConfigGroupSaver cgs( config, "PreviewSettings" );
+	unsigned long long maxSize = config->readNumEntry( "MaximumSize", 1024*1024 /* 1MB */ );
+	unsigned long long fileSize = QFile( path ).size();
+	if ( (fileSize > 0) && (fileSize < maxSize) ) {
+	    if (!img.load( path )) {
+		return false;
+	    }
+	    if (img.depth() != 32)
+		img = img.convertDepth( 32 );
+	    return true;
+	} else {
+	    return false;
+	}
+    }
+}
+
+ThumbCreator::Flags EXRCreator::flags() const
+{
+    return None;
+}