1 files changed, 38 insertions, 0 deletions
diff --git a/Swift/QtUI/QtCachedImageScaler.cpp b/Swift/QtUI/QtCachedImageScaler.cpp
new file mode 100644
index 0000000..7307577
--- /dev/null
+++ b/Swift/QtUI/QtCachedImageScaler.cpp
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2010 Remko Tronçon
+ * Licensed under the GNU General Public License v3.
+ * See Documentation/Licenses/GPLv3.txt for more information.
+ */
+
+#include "QtCachedImageScaler.h"
+
+#include <QImage>
+#include <boost/lexical_cast.hpp>
+
+namespace Swift {
+
+QtCachedImageScaler::QtCachedImageScaler() {
+}
+
+boost::filesystem::path QtCachedImageScaler::getScaledImage(const boost::filesystem::path& imagePath, int size) {
+	boost::filesystem::path scaledImagePath(imagePath.string() + "." + boost::lexical_cast<std::string>(size));
+	if (!boost::filesystem::exists(scaledImagePath)) {
+		QImage image(imagePath.string().c_str());
+		if (!image.isNull()) {
+			if (image.width() > size || image.height() > size) {
+				QImage scaledImage = image.scaled(size, size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+				scaledImage.save(QString::fromUtf8(scaledImagePath.string().c_str()), "PNG");
+			}
+			else {
+				image.save(QString::fromUtf8(scaledImagePath.string().c_str()), "PNG");
+			}
+		}
+		else {
+			return imagePath;
+		}
+	}
+	return scaledImagePath;
+
+}
+
+}