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Minecraft.Client/Common/UI/UIFontData.h

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+#pragma once
+
+#include <unordered_map>
+
+using namespace std;
+
+#define _DEBUG_BLOCK_CHARS 0
+
+// For hardcoded font data.
+struct SFontData
+{
+public:
+	static const unsigned short FONTCOLS = 23;
+	static const unsigned short FONTROWS = 20;
+
+	static const unsigned short FONTSIZE = FONTCOLS * FONTROWS;
+
+public:
+	// Font name.
+	string				m_strFontName;
+
+	// Filename of the glyph archive.
+	wstring				m_wstrFilename;
+
+	// Number of glyphs in the archive.
+	unsigned int		m_uiGlyphCount;
+
+	// Unicode values of each glyph.
+	unsigned short		*m_arrCodepoints;
+
+	// X resolution of glyph archive.
+	unsigned int		m_uiGlyphMapX;
+
+	// Y resolution of glyph archive.
+	unsigned int		m_uiGlyphMapY;
+
+	// Number of columns in the glyph archive.
+	unsigned int		m_uiGlyphMapCols;
+
+	// Number of rows in the glyph archive.
+	unsigned int		m_uiGlyphMapRows;
+
+	// Width of each glyph.
+	unsigned int		m_uiGlyphWidth;
+
+	// Height of each glyph.
+	unsigned int		m_uiGlyphHeight;
+
+	// Ascent of each glyph above the baseline (units?).
+	float				m_fAscent;
+
+	// Descent of each glyph below the baseline (units?).
+	float				m_fDescent;
+
+	// How much to advance for each pixel wide the glyph is.
+	float				m_fAdvPerPixel;
+
+	// How many pixels wide any whitespace characters are.
+	unsigned int		m_uiWhitespaceWidth;
+
+public:
+	static unsigned short	Codepoints[FONTSIZE];
+	static SFontData		Mojangles_7;
+	static SFontData		Mojangles_11;
+};
+
+// Provides a common interface for dealing with font data.
+class CFontData
+{
+public:
+	CFontData();
+
+	// pbRawImage consumed by constructor.
+	CFontData(SFontData &sFontData, int *pbRawImage);
+
+	// Release memory.
+	void				release();
+
+protected:
+
+	// Hardcoded font data.
+	SFontData			*m_sFontData;
+
+	// Map Unicodepoints to glyph ids.
+	unordered_map<unsigned int, unsigned short> m_unicodeMap;
+
+	// Kerning value for each glyph.
+	unsigned short		*m_kerningTable;
+
+	// Binary blob of the archive image.
+	unsigned char		*m_pbRawImage;
+
+	// Total advance of each character.
+	float				*m_pfAdvanceTable;
+
+public:
+
+	// Accessor for the font name in the internal SFontData.
+	const string		getFontName();
+
+	// Accessor for the hardcoded internal font data.
+	SFontData			*getFontData();
+
+	// Get the glyph id corresponding to a unicode point.
+	unsigned short		getGlyphId(unsigned int unicodepoint);
+
+	// Get the unicodepoint corresponding to a glyph id.
+	unsigned int		getUnicode(unsigned short glyphId);
+
+	// Get a pointer to the top left pixel of a row/column in the raw image.
+	unsigned char		*topLeftPixel(int row, int col);
+
+	// Get the row and column where a glyph appears in the archive.
+	void				getPos(unsigned short gyphId, int &row, int &col);
+
+	// Get the advance of this character (units?).
+	float				getAdvance(unsigned short glyphId);
+
+	// Get the width (in pixels) of a given character.
+	int					getWidth(unsigned short glyphId);
+
+	// Returns true if this glyph is whitespace.
+	bool				glyphIsWhitespace(unsigned short glyphId);
+	
+	// Returns true if this unicodepoint is whitespace
+	bool				unicodeIsWhitespace(unsigned int unicodepoint);
+
+private:
+
+	// Move a pointer in an image dx pixels right and dy pixels down, wrap around in either dimension leads to unknown behaviour.
+	void				moveCursor(unsigned char *&cursor, unsigned int dx, unsigned int dy);
+};
+