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https://github.com/4jcraft/4jcraft.git
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129 lines
3.4 KiB
C++
129 lines
3.4 KiB
C++
#pragma once
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#include <unordered_map>
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// using namespace std;
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#define _DEBUG_BLOCK_CHARS 0
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// For hardcoded font data.
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struct SFontData {
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public:
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static const unsigned short FONTCOLS = 23;
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static const unsigned short FONTROWS = 20;
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static const unsigned short FONTSIZE = FONTCOLS * FONTROWS;
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public:
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// Font name.
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std::string m_strFontName;
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// Filename of the glyph archive.
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std::wstring m_wstrFilename;
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// Number of glyphs in the archive.
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unsigned int m_uiGlyphCount;
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// Unicode values of each glyph.
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unsigned short* m_arrCodepoints;
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// X resolution of glyph archive.
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unsigned int m_uiGlyphMapX;
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// Y resolution of glyph archive.
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unsigned int m_uiGlyphMapY;
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// Number of columns in the glyph archive.
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unsigned int m_uiGlyphMapCols;
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// Number of rows in the glyph archive.
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unsigned int m_uiGlyphMapRows;
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// Width of each glyph.
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unsigned int m_uiGlyphWidth;
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// Height of each glyph.
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unsigned int m_uiGlyphHeight;
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// Ascent of each glyph above the baseline (units?).
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float m_fAscent;
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// Descent of each glyph below the baseline (units?).
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float m_fDescent;
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// How much to advance for each pixel wide the glyph is.
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float m_fAdvPerPixel;
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// How many pixels wide any whitespace characters are.
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unsigned int m_uiWhitespaceWidth;
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public:
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static unsigned short Codepoints[FONTSIZE];
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static SFontData Mojangles_7;
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static SFontData Mojangles_11;
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};
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// Provides a common interface for dealing with font data.
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class CFontData {
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public:
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CFontData();
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// pbRawImage consumed by constructor.
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CFontData(SFontData& sFontData, int* pbRawImage);
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// Release memory.
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void release();
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protected:
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// Hardcoded font data.
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SFontData* m_sFontData;
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// Map Unicodepoints to glyph ids.
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std::unordered_map<unsigned int, unsigned short> m_unicodeMap;
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// Kerning value for each glyph.
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unsigned short* m_kerningTable;
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// Binary blob of the archive image.
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unsigned char* m_pbRawImage;
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// Total advance of each character.
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float* m_pfAdvanceTable;
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public:
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// Accessor for the font name in the internal SFontData.
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const std::string getFontName();
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// Accessor for the hardcoded internal font data.
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SFontData* getFontData();
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// Get the glyph id corresponding to a unicode point.
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unsigned short getGlyphId(unsigned int unicodepoint);
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// Get the unicodepoint corresponding to a glyph id.
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unsigned int getUnicode(unsigned short glyphId);
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// Get a pointer to the top left pixel of a row/column in the raw image.
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unsigned char* topLeftPixel(int row, int col);
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// Get the row and column where a glyph appears in the archive.
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void getPos(unsigned short gyphId, int& row, int& col);
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// Get the advance of this character (units?).
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float getAdvance(unsigned short glyphId);
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// Get the width (in pixels) of a given character.
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int getWidth(unsigned short glyphId);
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// Returns true if this glyph is whitespace.
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bool glyphIsWhitespace(unsigned short glyphId);
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// Returns true if this unicodepoint is whitespace
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bool unicodeIsWhitespace(unsigned int unicodepoint);
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private:
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// Move a pointer in an image dx pixels right and dy pixels down, wrap
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// around in either dimension leads to unknown behaviour.
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void moveCursor(unsigned char*& cursor, unsigned int dx, unsigned int dy);
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};
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