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graphics/fonts/bdf.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 GRAPHICS_FONTS_BDF_H
+#define GRAPHICS_FONTS_BDF_H
+
+#include "common/system.h"
+#include "common/types.h"
+
+#include "graphics/font.h"
+
+namespace Common {
+class SeekableReadStream;
+}
+
+namespace Graphics {
+
+struct BdfBoundingBox {
+	uint8 width, height;
+	int8 xOffset, yOffset;
+};
+
+struct BdfFontData {
+	const char *familyName;
+	const char *slant;
+
+	int maxAdvance;
+	int height;
+	int size;
+	BdfBoundingBox defaultBox;
+	int ascent;
+
+	uint firstCharacter;
+	int defaultCharacter;
+	uint numCharacters;
+
+	const byte *const *bitmaps;
+	const byte *advances;
+	const BdfBoundingBox *boxes;
+};
+
+class BdfFont : public Font {
+public:
+	BdfFont(const BdfFontData &data, DisposeAfterUse::Flag dispose);
+	~BdfFont();
+
+	virtual int getFontHeight() const;
+	virtual int getFontAscent() const;
+	virtual int getMaxCharWidth() const;
+
+	virtual int getCharWidth(uint32 chr) const;
+	virtual void drawChar(Surface *dst, uint32 chr, int x, int y, uint32 color) const;
+
+	const char *getFamilyName() const;
+	const char *getFontSlant() const;
+	int getFontSize() const;
+
+	static BdfFont *loadFont(Common::SeekableReadStream &stream);
+	static bool cacheFontData(const BdfFont &font, const Common::Path &filename);
+	static BdfFont *loadFromCache(Common::SeekableReadStream &stream);
+	static BdfFont *scaleFont(const BdfFont *src, int newSize);
+private:
+	int mapToIndex(uint32 ch) const;
+
+	const BdfFontData _data;
+	const DisposeAfterUse::Flag _dispose;
+};
+
+#define DEFINE_FONT(n) \
+	const BdfFont *n = 0; \
+	void create_##n() { \
+		n = new BdfFont(desc, DisposeAfterUse::NO); \
+	}
+
+#define FORWARD_DECLARE_FONT(n) \
+	extern const BdfFont *n; \
+	extern void create_##n()
+
+#define INIT_FONT(n) \
+	create_##n()
+
+} // End of namespace Graphics
+
+#endif