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engines/mtropolis/element_factory.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mtropolis/element_factory.h"
+#include "mtropolis/elements.h"
+#include "mtropolis/runtime.h"
+
+namespace MTropolis {
+
+ElementLoaderContext::ElementLoaderContext(Runtime *pRuntime, Project *pProject, size_t pStreamIndex)
+	: runtime(pRuntime), project(pProject), streamIndex(pStreamIndex) {
+}
+
+template<typename TElement, typename TElementData>
+class ElementFactory {
+public:
+	static Common::SharedPtr<Element> createElement(ElementLoaderContext &context, const Data::DataObject &dataObject);
+	static SIElementFactory *getInstance();
+
+private:
+	static SIElementFactory _instance;
+};
+
+template<typename TElement, typename TElementData>
+Common::SharedPtr<Element> ElementFactory<TElement, TElementData>::createElement(ElementLoaderContext &context, const Data::DataObject &dataObject) {
+	TElement *tElementPtr = new TElement();
+	Common::SharedPtr<TElement> element(tElementPtr);
+	Element *elementPtr = tElementPtr;
+
+	if (!element->load(context, static_cast<const TElementData &>(dataObject))) {
+		element.reset();
+	} else {
+		elementPtr->setSelfReference(element);
+		if (elementPtr->getName().empty())
+			elementPtr->tryAutoSetName(context.runtime, context.project);
+	}
+
+	return Common::SharedPtr<Element>(element);
+}
+
+template<typename TElement, typename TElementData>
+SIElementFactory *ElementFactory<TElement, TElementData>::getInstance() {
+	return &_instance;
+}
+
+template<typename TElement, typename TElementData>
+SIElementFactory ElementFactory<TElement, TElementData>::_instance = {
+	ElementFactory<TElement, TElementData>::createElement
+};
+
+SIElementFactory *getElementFactoryForDataObjectType(const Data::DataObjectTypes::DataObjectType dataObjectType) {
+	switch (dataObjectType) {
+	case Data::DataObjectTypes::kGraphicElement:
+		return ElementFactory<GraphicElement, Data::GraphicElement>::getInstance();
+	case Data::DataObjectTypes::kAVIMovieElement:
+	case Data::DataObjectTypes::kMovieElement:
+		return ElementFactory<MovieElement, Data::MovieElement>::getInstance();
+	case Data::DataObjectTypes::kImageElement:
+		return ElementFactory<ImageElement, Data::ImageElement>::getInstance();
+	case Data::DataObjectTypes::kMToonElement:
+		return ElementFactory<MToonElement, Data::MToonElement>::getInstance();
+	case Data::DataObjectTypes::kTextLabelElement:
+		return ElementFactory<TextLabelElement, Data::TextLabelElement>::getInstance();
+	case Data::DataObjectTypes::kSoundElement:
+		return ElementFactory<SoundElement, Data::SoundElement>::getInstance();
+
+	default:
+		return nullptr;
+	}
+}
+
+} // End of namespace MTropolis