-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include <msp/datafile/collection.h>
-#include "gl.h"
-#include "font.h"
-#include "immediate.h"
-#include "primitivetype.h"
-#include "texture2d.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-Font::Font():
- tex(0),
- own_tex(false),
- default_size(1),
- ascent(1),
- descent(0)
-{ }
-
-Font::~Font()
-{
- if(own_tex)
- delete tex;
-}
-
-void Font::set_texture(const Texture2D &t)
-{
- if(own_tex)
- delete tex;
-
- tex = &t;
- own_tex = false;
-}
-
-const Texture2D &Font::get_texture() const
-{
- if(!tex)
- throw InvalidState("No texture");
- return *tex;
-}
-
-void Font::add_glyph(unsigned code, float x1, float y1, float x2, float y2, float w, float h, float ox, float oy, float adv)
-{
- Glyph glyph;
- glyph.code = code;
- glyph.x1 = x1;
- glyph.y1 = y1;
- glyph.x2 = x2;
- glyph.y2 = y2;
- glyph.w = w;
- glyph.h = h;
- glyph.off_x = ox;
- glyph.off_y = oy;
- glyph.advance = adv;
- glyphs.insert(GlyphMap::value_type(code, glyph));
-}
-
-float Font::get_string_width(const string &str, Codecs::Decoder &dec) const
-{
- float x = 0;
-
- for(string::const_iterator i=str.begin(); i!=str.end();)
- x += get_glyph_advance(dec.decode_char(str, i));
-
- return x;
-}
-
-void Font::draw_string(const string &str, Codecs::Decoder &dec) const
-{
- Immediate imm((TEXCOORD2, VERTEX2));
- draw_string(str, dec, imm);
-}
-
-void Font::draw_string(const string &str, Codecs::Decoder &dec, PrimitiveBuilder &pbuilder) const
-{
- if(!tex)
- throw InvalidState("No texture");
-
- tex->bind();
-
- float x = 0;
- unsigned count = 0;
-
- pbuilder.begin(QUADS);
- for(string::const_iterator i=str.begin(); i!=str.end();)
- {
- GlyphMap::const_iterator j = glyphs.find(dec.decode_char(str, i));
- if(j==glyphs.end())
- continue;
-
- create_glyph_vertices(j->second, pbuilder, x);
- x += j->second.advance;
- count += 4;
- }
- pbuilder.end();
-}
-
-void Font::create_glyph_vertices(const Glyph &glyph, VertexBuilder &vbuilder, float x) const
-{
- vbuilder.texcoord(glyph.x1, glyph.y1);
- vbuilder.vertex(x+glyph.off_x, glyph.off_y);
- vbuilder.texcoord(glyph.x2, glyph.y1);
- vbuilder.vertex(x+glyph.off_x+glyph.w, glyph.off_y);
- vbuilder.texcoord(glyph.x2, glyph.y2);
- vbuilder.vertex(x+glyph.off_x+glyph.w, glyph.off_y+glyph.h);
- vbuilder.texcoord(glyph.x1, glyph.y2);
- vbuilder.vertex(x+glyph.off_x, glyph.off_y+glyph.h);
-}
-
-float Font::get_glyph_advance(unsigned code) const
-{
- GlyphMap::const_iterator i = glyphs.find(code);
- if(i==glyphs.end())
- return 0;
-
- return i->second.advance;
-}
-
-
-Font::Loader::Loader(Font &f):
- DataFile::CollectionObjectLoader<Font>(f, 0)
-{
- init();
-}
-
-Font::Loader::Loader(Font &f, Collection &c):
- DataFile::CollectionObjectLoader<Font>(f, &c)
-{
- init();
-}
-
-void Font::Loader::init()
-{
- add("default_size", &Font::default_size);
- add("ascent", &Font::ascent);
- add("descent", &Font::descent);
- add("texture", &Font::tex);
- add("texture_inline", &Loader::texture_inline);
- add("glyph", &Loader::glyph);
-}
-
-void Font::Loader::glyph(unsigned c)
-{
- Glyph gl;
- gl.code = c;
- load_sub(gl);
- obj.glyphs.insert(GlyphMap::value_type(c, gl));
-}
-
-void Font::Loader::texture_inline()
-{
- RefPtr<Texture2D> tex = new Texture2D;
- load_sub(*tex);
- obj.tex = tex.release();
- obj.own_tex = true;
-}
-
-
-Font::Glyph::Loader::Loader(Glyph &g):
- DataFile::ObjectLoader<Glyph>(g)
-{
- add("texcoords", &Loader::texcoords);
- add("size", &Glyph::w, &Glyph::h);
- add("offset", &Glyph::off_x, &Glyph::off_y);
- add("advance", &Glyph::advance);
-}
-
-void Font::Glyph::Loader::texcoords(float x1, float y1, float x2, float y2)
-{
- obj.x1 = x1;
- obj.y1 = y1;
- obj.x2 = x2;
- obj.y2 = y2;
-}
-
-} // namespace GL
-} // namespace Msp