[UI/MOBILE] WIP on internal path support

src/ui/resource/ImageResource.hpp

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2014 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef COVER_RESOURCE_HPP_
+#define COVER_RESOURCE_HPP_
+
+#include <mutex>
+
+#include <Wt/WResource>
+
+#include "database/DatabaseHandler.hpp"
+#include "image/Image.hpp"
+
+namespace UserInterface {
+
+
+class ImageResource : public Wt::WResource
+{
+	public:
+		static const std::size_t maxSize = 512;
+
+		ImageResource(Database::Handler& db, Wt::WObject *parent = 0);
+		~ImageResource();
+
+		std::string getReleaseUrl(Database::Release::id_type releaseId, size_t size) const;
+		std::string getTrackUrl(Database::Track::id_type trackId, size_t size) const;
+		std::string getArtistUrl(Database::Artist::id_type artistId, size_t size) const;
+		std::string getUnknownTrackUrl(size_t size) const;
+
+		void handleRequest(const Wt::Http::Request& request, Wt::Http::Response& response);
+
+	private:
+
+		Image::Image			getDefaultCover(std::size_t size);
+		Image::Image			getDefaultArtistImage(std::size_t size);
+		void				putImage(Wt::Http::Response& response, Image::Image image);
+		void				putCover(Wt::Http::Response& response, std::vector<Image::Image> covers, std::size_t size);
+
+		// Used to protect transactions since they are not thread safe
+		std::mutex			_mutex;
+		Database::Handler&		_db;
+
+		// Default cover for different sizes
+		std::map<std::size_t, Image::Image>	_defaultCovers;
+
+		// Default artist images for different sizes
+		std::map<std::size_t, Image::Image>	_defaultArtistImages;
+
+		// TODO construct a cache for covers?
+};
+
+} // namespace UserInterface
+
+#endif