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engines/draci/font.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 DRACI_FONT_H
+#define DRACI_FONT_H
+
+#include "graphics/font.h"
+#include "common/path.h"
+
+namespace Draci {
+
+extern const char * const kFontSmall;
+extern const char * const kFontBig;
+
+class Surface;
+
+/**
+ *  Default font colors. They all seem to remain constant except for the
+ *  first one which varies depending on the character speaking.
+ *  kOverFontColor is set to transparent.
+ */
+enum {
+	kFontColor1 = 2,
+	kFontColor2 = 0,
+	kFontColor3 = 3,
+	kFontColor4 = 4,
+	kOverFontColor = 255,
+	kTitleColor = 255,
+	kLineActiveColor = 254,
+	kLineInactiveColor = 255
+};
+
+/**
+ *  Represents the game's fonts. See docs for setFont() for font format details.
+ */
+class Font {
+
+public:
+	Font(const Common::Path &filename);
+	~Font();
+
+	bool loadFont(const Common::Path &filename);
+	uint8 getFontHeight() const { return _fontHeight; }
+	uint8 getMaxCharWidth() const { return _maxCharWidth; }
+	uint8 getCharWidth(byte chr) const;
+	void drawChar(Surface *dst, uint8 chr, int tx, int ty, int with_color) const;
+
+	void drawString(Surface *dst, const byte *str, uint len, int x, int y, int with_color,
+	                int spacing, bool markDirty) const;
+	void drawString(Surface *dst, const Common::String &str,
+	                int x, int y, int with_color, int spacing, bool markDirty) const;
+
+	uint getStringWidth(const Common::String &str, int spacing) const;
+	uint getStringHeight(const Common::String &str) const;
+	uint getLineWidth(const Common::String &str, uint startIndex, int spacing) const;
+
+private:
+	uint8 _fontHeight;
+	uint8 _maxCharWidth;
+
+	/** Pointer to an array of individual char widths */
+	uint8 *_charWidths;
+
+	/** Pointer to a raw byte array representing font pixels stored row-wise */
+	byte *_charData;
+
+	/** Number of glyphs in the font */
+	static const uint kCharNum = 138;
+
+	/**
+	 *  Chars are indexed from the space character so this should be subtracted
+	 *  to get the index of a glyph
+	 */
+	static const uint kCharIndexOffset = 32;
+
+	/** Internal function for freeing fonts when destructing/loading another */
+	void freeFont();
+};
+
+} // End of namespace Draci
+
+#endif // DRACI_FONT_H