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https://github.com/RetroDECK/ES-DE.git
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69 lines
1.4 KiB
C++
69 lines
1.4 KiB
C++
#ifndef _FONT_H_
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#define _FONT_H_
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#include <string>
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#include "GuiComponent.h"
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#include "platform.h"
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#include GLHEADER
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#include <ft2build.h>
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#include FT_FREETYPE_H
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//A TrueType Font renderer that uses FreeType and OpenGL.
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//Subclass of GuiComponent to catch ::onInit and ::onDeinit.
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//The library is automatically initialized when it's needed.
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class Font : GuiComponent
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{
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public:
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static void initLibrary();
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Font(std::string path, int size);
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~Font();
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FT_Face face;
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//contains sizing information for every glyph.
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struct charPosData {
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int texX;
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int texY;
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int texW;
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int texH;
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int advX;
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int advY;
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int bearingY;
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};
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charPosData charData[128];
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GLuint textureID;
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void drawText(std::string text, int startx, int starty, int color); //Render some text using this font.
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void sizeText(std::string text, int* w, int* h); //Sets the width and height of a given string to given pointers. Skipped if pointer is NULL.
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int getHeight();
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void onInit();
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void onDeinit();
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int getSize();
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static std::string getDefaultPath();
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private:
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static int getDpiX();
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static int getDpiY();
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static FT_Library sLibrary;
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static bool libraryInitialized;
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void buildAtlas(); //Builds a "texture atlas," one big OpenGL texture with glyphs 32 to 128.
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int textureWidth; //OpenGL texture width
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int textureHeight; //OpenGL texture height
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int mMaxGlyphHeight;
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std::string mPath;
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int mSize;
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};
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#endif
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