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graphics/fonts/winfont.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_WINFONT_H
+#define GRAPHICS_WINFONT_H
+
+#include "common/str.h"
+#include "common/path.h"
+#include "graphics/font.h"
+
+namespace Common {
+class SeekableReadStream;
+class WinResources;
+}
+
+namespace Graphics {
+
+struct WinFontDirEntry {
+	WinFontDirEntry() : points(0) {}
+	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::Path &fileName, const WinFontDirEntry &dirEntry = WinFontDirEntry());
+	bool loadFromFON(Common::SeekableReadStream &stream, const WinFontDirEntry &dirEntry = WinFontDirEntry());
+
+	/** Open a font from an FNT file */
+	bool loadFromFNT(const Common::Path &fileName);
+
+	/** Close this font */
+	void close();
+
+	// Font API
+	int getFontHeight() const { return _pixHeight; }	//< pixels, not points - for points, see getFontSizeInPointsAtDPI()
+	int getFontAscent() const { return _ascent; }
+	int getMaxCharWidth() const { return _maxWidth; }
+	Common::String getName() const { return _name; }
+	int getCharWidth(uint32 chr) const;
+	void drawChar(Surface *dst, uint32 chr, int x, int y, uint32 color) const;
+	int getStyle() const;
+
+	int getFontSizeInPointsAtDPI(const int dpi) const;
+
+	static WinFont *scaleFont(const WinFont *src, int newSize);
+private:
+	bool loadFromEXE(Common::WinResources *exe, const Common::Path &fileName, const WinFontDirEntry &dirEntry);
+
+	uint32 getFontIndex(Common::SeekableReadStream &stream, const WinFontDirEntry &dirEntry);
+	Common::String getFONFontName(Common::SeekableReadStream &stream);
+	bool loadFromFNT(Common::SeekableReadStream &stream);
+	char indexToCharacter(uint16 index) const;
+	uint16 characterToIndex(uint32 character) const;
+
+	uint16 _pixHeight;
+	uint16 _maxWidth;
+	uint16 _ascent;
+	uint16 _sizeInPoints;
+	uint16 _dpi;
+	byte _firstChar;
+	byte _lastChar;
+	byte _defaultChar;
+	bool _italic;
+	bool _strikethrough;
+	bool _underline;
+	uint16 _weight;
+	Common::String _name;
+
+	enum {
+		kFontStyleRegular,
+		kFontStyleBold = 1,
+		kFontStyleItalic = 2,
+		kFontStyleUnderline = 4,
+	};
+
+	uint16 _glyphCount;
+	struct GlyphEntry {
+		GlyphEntry() { bitmap = 0; charWidth = 0; offset = 0; }
+		~GlyphEntry() { delete[] bitmap; }
+
+		uint16 charWidth;
+		uint32 offset;
+		byte *bitmap;
+	} *_glyphs;
+};
+
+} // End of namespace Graphics
+
+#endif