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Diffstat (limited to 'src/libjin/Graphics/Font/je_ttf.h')
| -rw-r--r-- | src/libjin/Graphics/Font/je_ttf.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/libjin/Graphics/Font/je_ttf.h b/src/libjin/Graphics/Font/je_ttf.h new file mode 100644 index 0000000..f3761ac --- /dev/null +++ b/src/libjin/Graphics/Font/je_ttf.h @@ -0,0 +1,134 @@ +#ifndef __LIBJINTTF_H +#define __LIBJIN_TTF_H +#include "../../core/je_configuration.h" +#if LIBJIN_MODULES_RENDER + +#include <vector> +#include <map> + +#include "../../3rdparty/stb/stb_truetype.h" +#include "../../math/je_quad.h" + +#include "../je_color.h" +#include "../je_drawable.h" + +#include "je_page.h" +#include "je_font.h" +#include "je_text.h" + +namespace jin +{ + namespace graphics + { + + class TTF; + + // + // TTFData + // |- TTF(14px) + // |- TTF(15px) + // . + // . + // . + // + class TTFData + { + public: + static TTFData* createTTFData(const unsigned char* data, unsigned int size); + + ~TTFData(); + + TTF* createTTF(unsigned ttfsize); + + void pushTTFsize(unsigned ttfsize); + void popTTFsize(); + + Channel* getCodepointBitmapAlpha(unsigned int codepoint, int* width, int* height, int* xoff, int* yoff) const; + Color* getCodepointBitmap(unsigned int codepoint, int* width, int* height, int* xoff, int* yoff) const; + + void getVMetrics(int* baseline, int* descent); + void getHMetrics(unsigned int codepoint, int* advanceWidth, int* leftSideBearing); + + private: + static const unsigned int FONT_SIZE = 12; + + TTFData(const unsigned char* data, unsigned int size); + + stbtt_fontinfo info; + struct + { + unsigned char* data; + unsigned int size; + } raw; + std::vector<float> scales; + + }; + + class TTF : public Font + { + public: + //static TTF* createTTF(TTFData* ttfData, unsigned ttfSzie); + + Page* typeset(const Text& text, int lineheight, int spacing = 0) override; + Page* typeset(const Content& text, int lineheight, int spacing = 0) override; + + void print(const Text& text, int x, int y, int lineheight, int spacing = 0) override; + void print(const Content& text, int x, int y, int lineheight, int spacing = 0) override; + void print(const Page* page, int x, int y) override; + + ~TTF(); + + private: + friend class TTFData; + + struct TTFGlyph + { + GLuint atlas; + // normalized coordinates + struct Bbox + { + float x, y; + float w, h; + } bbox; + // glyph size in pixel + unsigned int width, height; + }; + + static const int TEXTURE_SIZE_LEVELS_COUNT = 7; + static const int TEXTURE_SIZE_LEVEL_MAX = TEXTURE_SIZE_LEVELS_COUNT - 1; + static const int TEXTURE_WIDTHS[TEXTURE_SIZE_LEVELS_COUNT]; + static const int TEXTURE_HEIGHTS[TEXTURE_SIZE_LEVELS_COUNT]; + + TTF(TTFData* ttf, Codepoint ttfSize); + + void estimateSize(); + GLuint createAtlas(); + TTFGlyph& bakeGlyph(Codepoint character); + TTFGlyph& findGlyph(Codepoint character); + + int getCharWidth(int c); + int getCharHeight(int c); + + int getTextWidth(const Content& text, int spacing = 0); + int getTextHeight(const Content& text, int lineheight); + void getTextBox(const Content& text, int* w, int* h, int lineheight, int spacing = 0); + + int textureWidth; + int textureHeight; + std::vector<GLuint> atlases; + std::map<Codepoint, TTFGlyph> glyphs; + TTFData* ttf; + int baseline; + int descent; + + /* cursor helped render to texture */ + math::Vector2<float> cursor; + + }; + + } // namespace graphics +} // namespace jin + +#endif // LIBJIN_MODULES_RENDER + +#endif // __LIBJIN_FONT_H
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