GRAPHICS: Add support for Windows FON/FNT fonts

As required by Hugo and Mohawk.

svn-id: r55120

1 files changed, 96 insertions, 0 deletions

diff --git a/graphics/fonts/winfont.h b/graphics/fonts/winfont.h
new file mode 100644
index 0000000000..0600527643
--- /dev/null
+++ b/graphics/fonts/winfont.h
@@ -0,0 +1,96 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#ifndef GRAPHICS_WINFONT_H
+#define GRAPHICS_WINFONT_H
+
+#include "graphics/font.h"
+
+namespace Common {
+	class SeekableReadStream;
+	class String;
+}
+
+namespace Graphics {
+
+struct WinFontDirEntry {
+	WinFontDirEntry() {}
+	WinFontDirEntry(const Common::String &name, uint16 p) : faceName(name), points(p) {}
+
+	// This is really just a simple identifier to match a directory entry with
+	// If need-be, we can add other things to check such as italics and strikethrough, etc.
+	Common::String faceName;
+	uint16 points;
+};
+
+class WinFont : public Font {
+public:
+	WinFont();
+	~WinFont();
+
+	/**
+	 * Open a font with a name in an FON file.
+	 *
+	 * If dirEntry is not given, the first font in the FONTDIR will be loaded
+	 */
+	bool loadFromFON(const Common::String &fileName, const WinFontDirEntry &dirEntry = WinFontDirEntry());
+
+	/** Open a font from an FNT file */
+	bool loadFromFNT(const Common::String &fileName);
+
+	/** Close this font */
+	void close();
+
+	// Font API
+	int getFontHeight() const { return _ascent; }
+	int getMaxCharWidth() const { return _maxWidth; }
+	int getCharWidth(byte chr) const;
+	void drawChar(Surface *dst, byte chr, int x, int y, uint32 color) const;
+
+private:
+	bool loadFromFNT(Common::SeekableReadStream &stream);
+	char indexToCharacter(uint16 index) const;
+	uint16 characterToIndex(byte character) const;
+
+	uint16 _pixHeight;
+	uint16 _ascent;
+	uint16 _maxWidth;
+	byte _firstChar;
+	byte _lastChar;
+	byte _defaultChar;
+
+	uint16 _glyphCount;
+	struct GlyphEntry {
+		GlyphEntry() { bitmap = 0; }
+		~GlyphEntry() { delete[] bitmap; }
+
+		uint16 charWidth;
+		uint32 offset;
+		byte *bitmap;
+	} *_glyphs;	
+};
+
+} // End of namespace Graphics
+
+#endif