Initial commit

engines/mediastation/actors/image.cpp

@@ -0,0 +1,128 @@
+/* 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 "mediastation/mediastation.h"
+#include "mediastation/actors/image.h"
+#include "mediastation/debugchannels.h"
+
+namespace MediaStation {
+
+ImageAsset::~ImageAsset() {
+	delete bitmap;
+	bitmap = nullptr;
+}
+
+ImageActor::~ImageActor() {
+	unregisterWithStreamManager();
+}
+
+void ImageActor::readParameter(Chunk &chunk, ActorHeaderSectionType paramType) {
+	switch (paramType) {
+	case kActorHeaderChannelIdent:
+		_channelIdent = chunk.readTypedChannelIdent();
+		registerWithStreamManager();
+		_asset = Common::SharedPtr<ImageAsset>(new ImageAsset);
+		break;
+
+	case kActorHeaderStartup:
+		_isVisible = static_cast<bool>(chunk.readTypedByte());
+		break;
+
+	case kActorHeaderLoadType:
+		_loadType = chunk.readTypedByte();
+		break;
+
+	case kActorHeaderX:
+		_xOffset = chunk.readTypedUint16();
+		break;
+
+	case kActorHeaderY:
+		_yOffset = chunk.readTypedUint16();
+		break;
+
+	case kActorHeaderActorReference: {
+		_actorReference = chunk.readTypedUint16();
+		Actor *referencedActor = g_engine->getActorById(_actorReference);
+		if (referencedActor == nullptr) {
+			error("%s: Referenced actor %d doesn't exist or has not been read yet in this title", __func__, _actorReference);
+		}
+		if (referencedActor->type() != kActorTypeImage) {
+			error("%s: Type mismatch of referenced actor %d", __func__, _actorReference);
+		}
+		ImageActor *referencedImage = static_cast<ImageActor *>(referencedActor);
+		_asset = referencedImage->_asset;
+		break;
+	}
+
+	default:
+		SpatialEntity::readParameter(chunk, paramType);
+	}
+}
+
+ScriptValue ImageActor::callMethod(BuiltInMethod methodId, Common::Array<ScriptValue> &args) {
+	ScriptValue returnValue;
+	switch (methodId) {
+	case kSpatialShowMethod: {
+		assert(args.empty());
+		spatialShow();
+		return returnValue;
+	}
+
+	case kSpatialHideMethod: {
+		assert(args.empty());
+		spatialHide();
+		return returnValue;
+	}
+
+	default:
+		return SpatialEntity::callMethod(methodId, args);
+	}
+}
+
+void ImageActor::draw(DisplayContext &displayContext) {
+	if (_isVisible) {
+		Common::Point origin = getBbox().origin();
+		g_engine->getDisplayManager()->imageBlit(origin, _asset->bitmap, _dissolveFactor, &displayContext);
+	}
+}
+
+void ImageActor::spatialShow() {
+	_isVisible = true;
+	invalidateLocalBounds();
+}
+
+void ImageActor::spatialHide() {
+	_isVisible = false;
+	invalidateLocalBounds();
+}
+
+Common::Rect ImageActor::getBbox() const {
+	Common::Point origin(_xOffset + _boundingBox.left, _yOffset + _boundingBox.top);
+	Common::Rect bbox(origin, _asset->bitmap->width(), _asset->bitmap->height());
+	return bbox;
+}
+
+void ImageActor::readChunk(Chunk &chunk) {
+	BitmapHeader *bitmapHeader = new BitmapHeader(chunk);
+	_asset->bitmap = new Bitmap(chunk, bitmapHeader);
+}
+
+} // End of namespace MediaStation