66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
#pragma once
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#include "texture.h"
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#include "util.h"
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#include <stb/stb_truetype.h>
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enum class kFont : uint16_t
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{
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Arial_11 = const_hash("arial-11"),
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Arial_30 = const_hash("arial-30"),
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};
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class Font
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{
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public:
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int w = 512;
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int h = 512;
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const int num_chars = 256-32;
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const int start_char = 32;
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// {mix, max}
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glm::vec4 bounds{ 0 };
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int size = 0;
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stbtt_fontinfo font;
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Texture2D font_tex;
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std::string path;
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std::vector<stbtt_bakedchar> chars;
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float scale = 1.f;
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bool load(const std::string& ttf, int sz, float scale);
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void change_scale(float scale);
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void calc_bounds();
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};
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class FontManager
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{
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public:
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static std::map<kFont, Font> m_fonts;
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static Sampler m_sampler;
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static void init();
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static bool load(kFont id, const char* ttf, int sz, float scale);
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static const Font& get(kFont id);
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static void invalidate() { m_fonts.clear(); }
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static void change_scale(float scale);
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};
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class TextMesh
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{
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struct Token
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{
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std::string s;
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float w;
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Token(const std::string& str, float width) : s(str), w(width) {}
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};
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std::vector<Token> tokenize(const std::string& s, const Font& f) const noexcept;
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public:
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GLuint font_array = 0;
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int font_array_count = 0;
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int max_width = 0;
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GLuint font_buffers[2] = {0, 0};
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kFont font_id;
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glm::vec2 bb = { 0, 0 };
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glm::vec4 cur_box;
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bool create();
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void update(kFont id, const std::string& text);
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void draw();
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};
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