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engines/glk/picture.h

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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/>.
+ *
+ */
+
+#ifndef GLK_PICTURE_H
+#define GLK_PICTURE_H
+
+#include "common/array.h"
+#include "graphics/managed_surface.h"
+
+namespace Glk {
+
+/**
+ * Picture/image class
+ */
+struct Picture : Graphics::ManagedSurface {
+private:
+	int _transColor;
+public:
+	int _refCount;
+	Common::String _name;
+	bool _scaled;
+
+	/**
+	 * Constructor
+	 */
+	Picture() : Graphics::ManagedSurface(), _refCount(0), _scaled(false), _transColor(0x7777) {}
+
+	/**
+	 * Constructor
+	 */
+	Picture(int width, int height, const Graphics::PixelFormat &fmt);
+	/**
+	 * Increment reference counter
+	 */
+	void increment();
+
+	/**
+	 * Decrement reference counter
+	 */
+	void decrement();
+
+	/**
+	 * Draw the picture
+	 */
+	void drawPicture(const Common::Point &destPos, const Common::Rect &box);
+
+	/**
+	 * Get the transparency color
+	 */
+	uint getTransparentColor() const { return _transColor; }
+
+	/**
+	 * Set the transparency color
+	 */
+	void setTransparentColor(uint color) { _transColor = color; }
+};
+
+/**
+ * Picture entry in the in-memory store
+ */
+struct PictureEntry {
+	Picture *_picture;
+	Picture *_scaled;
+	PictureEntry() : _picture(nullptr), _scaled(nullptr) {}
+};
+
+/**
+ * Pictures manager
+ */
+class Pictures {
+private:
+	int _refCount;
+	Common::Array<PictureEntry> _store;
+	Common::Array<Common::String> _adaptivePics;
+	Common::Array<byte> _savedPalette;
+private:
+	/**
+	 * Stores an original picture in the store
+	 */
+	void storeOriginal(Picture *pic);
+
+	/**
+	 * Stores a scaled picture in the store
+	 */
+	void storeScaled(Picture *pic);
+public:
+	/**
+	 * Constructor
+	 */
+	Pictures();
+
+	/**
+	 * Destructor
+	 */
+	~Pictures() { clear(); }
+
+	/**
+	 * Clear the picture list
+	 */
+	void clear();
+
+	/**
+	 * Increments the count of the number of pictures in use
+	 */
+	void increment();
+
+	/**
+	 * Decrements the count of the number of pictures in use
+	 */
+	void decrement();
+
+	/**
+	 * Searches for an existing picture entry
+	 */
+	PictureEntry *search(const Common::String &name);
+
+	/**
+	 * Stores a picture in the store
+	 */
+	void store(Picture *pic);
+
+	/**
+	 * Retrieves a picture from the store
+	 */
+	Picture *retrieve(const Common::String &name, bool scaled);
+
+	/**
+	 * Load a given picture
+	 */
+	Picture *load(const Common::String &name);
+
+	/**
+	 * Rescale the passed picture to a new picture of a given size
+	 */
+	Picture *scale(Picture *src, size_t sx, size_t sy);
+};
+
+} // End of namespace Glk
+
+#endif