-#ifndef MSP_GL_FONT_H_
-#define MSP_GL_FONT_H_
-
-#include <map>
-#include <string>
-#include <msp/datafile/objectloader.h>
-#include <msp/stringcodec/utf8.h>
-#include "vertexarray.h"
-
-namespace Msp {
-namespace GL {
-
-class PrimitiveBuilder;
-class Texture2D;
-
-/**
-Stores a set of glyphs and creates strings out of them.
-*/
-class Font
-{
-public:
- class Loader: public DataFile::CollectionObjectLoader<Font>
- {
- public:
- Loader(Font &);
- Loader(Font &, Collection &);
-
- private:
- void init();
- void glyph(unsigned);
- void kerning(unsigned, unsigned, float);
- void texture();
- void texture_ref(const std::string &);
- };
-
- struct Glyph
- {
- class Loader: public Msp::DataFile::ObjectLoader<Glyph>
- {
- public:
- Loader(Glyph &);
- private:
- void texcoords(float, float, float, float);
- };
-
- unsigned code;
- float x1, y1;
- float x2, y2;
- float w, h;
- float off_x, off_y;
- float advance;
- };
-
-private:
- typedef std::map<unsigned, Glyph> GlyphMap;
- typedef std::pair<unsigned, unsigned> KerningKey;
- typedef std::map<KerningKey, float> KerningMap;
-
- RefPtr<const Texture2D> texture;
- float native_size;
- float ascent;
- float descent;
- float cap_height;
- float x_height;
- GlyphMap glyphs;
- KerningMap kerning;
-
-public:
- Font();
- ~Font();
-
- void set_texture(const Texture2D &);
- const Texture2D &get_texture() const;
-
- /** Adds a glyph to the font. There must not be an existing glyph with the
- same code. */
- void add_glyph(const Glyph &);
- void set_kerning(unsigned, unsigned, float);
-
- /** Returns the size used to generate the font texture. This serves as a
- hint for obtaining the best quality when rendering strings. */
- float get_native_size() const { return native_size; }
-
- float get_ascent() const { return ascent; }
- float get_descent() const { return descent; }
- float get_cap_height() const { return cap_height; }
- float get_x_height() const { return x_height; }
-
- /** Returns the width of a string, in multiples of the font size. Scale the
- result according to the size used in rendering. */
- float get_string_width(const std::string &, StringCodec::Decoder &) const;
-
- template<class C>
- float get_string_width(const std::string &str) const
- {
- typename C::Decoder dec;
- return get_string_width(str, dec);
- }
-
- float get_string_width(const std::string &str) const
- { return get_string_width<StringCodec::Utf8>(str); }
-
- /** Draws a string to the framebuffer with Immediate. It is drawn with size
- 1.0; set up matrices for the desired size before the call. */
- void draw_string(const std::string &, StringCodec::Decoder &, const Color & = Color()) const;
-
- template<class C>
- void draw_string(const std::string &str, const Color &color = Color()) const
- {
- typename C::Decoder dec;
- draw_string(str, dec, color);
- }
-
- void draw_string(const std::string &str, const Color &color = Color()) const
- { draw_string<StringCodec::Utf8>(str, color); }
-
- /** Builds the primitives for a string. Two-dimensional vertex and texture
- coordinates are generated. Size 1.0 is used for building; set up the
- builder's matrix before the call. The texture is not bound, to avoid
- unnecessary bindings when creating meshes. */
- void build_string(const std::string &, StringCodec::Decoder &, PrimitiveBuilder &) const;
-
- template<class C>
- void build_string(const std::string &str, PrimitiveBuilder &pb) const
- {
- typename C::Decoder dec;
- build_string(str, dec, pb);
- }
-
- void build_string(const std::string &str, PrimitiveBuilder &pb) const
- { return build_string<StringCodec::Utf8>(str, pb); }
-
-private:
- void create_glyph_quad(const Glyph &, PrimitiveBuilder &) const;
- float get_glyph_advance(unsigned, unsigned = 0) const;
-};
-
-} // namespace GL
-} // namespace Msp
-
-#endif