+/* $Id$
+
+This file is part of libmspgl
+Copyright © 2007 Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
#include <GL/gl.h>
#include "font.h"
#include "texture2d.h"
Font::Font():
tex(0),
- own_tex(false)
+ default_size(1),
+ ascent(1),
+ descent(0),
+ varray((TEXCOORD2, VERTEX2))
{ }
void Font::set_texture(const Texture2D &t)
tex=&t;
}
-void Font::add_glyph(wchar_t code, float x1, float y1, float x2, float y2, float w, float h, float desc, float adv)
+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.y2=y2;
glyph.w=w;
glyph.h=h;
- glyph.descent=desc;
+ glyph.off_x=ox;
+ glyph.off_y=oy;
glyph.advance=adv;
+ glyph.index=glyphs.size();
+ glyphs.insert(GlyphMap::value_type(code, glyph));
+
+ RefPtr<VertexArrayBuilder> va_builder=varray.modify();
+ create_glyph_vertices(glyph, *va_builder);
}
-float Font::get_string_width(const string &str) const
+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(); ++i)
- {
- GlyphMap::const_iterator j=glyphs.find((unsigned char)*i);
- if(j==glyphs.end())
- continue;
-
- const Glyph &glyph=j->second;
-
- x+=glyph.advance;
- }
+ 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) const
+void Font::draw_string(const string &str, Codecs::Decoder &dec) const
{
- float x=0;
- float data[16];
+ prepare_render();
- prepare(data);
+ for(string::const_iterator i=str.begin(); i!=str.end();)
+ draw_glyph(dec.decode_char(str, i));
- for(string::const_iterator i=str.begin(); i!=str.end(); ++i)
- draw_glyph((unsigned char)*i, data, x);
+ glPopMatrix();
+}
- glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+void Font::create_glyph_vertices()
+{
+ varray.clear();
+ RefPtr<VertexArrayBuilder> va_builder=varray.modify();
+
+ unsigned n=0;
+ for(GlyphMap::iterator i=glyphs.begin(); i!=glyphs.end(); ++i, ++n)
+ {
+ i->second.index=n;
+ create_glyph_vertices(i->second, *va_builder);
+ }
}
-Font::~Font()
+void Font::create_glyph_vertices(const Glyph &glyph, VertexArrayBuilder &va_builder)
{
- if(own_tex)
- delete tex;
+ va_builder.texcoord(glyph.x1, glyph.y1);
+ va_builder.vertex(glyph.off_x, glyph.off_y);
+ va_builder.texcoord(glyph.x2, glyph.y1);
+ va_builder.vertex(glyph.off_x+glyph.w, glyph.off_y);
+ va_builder.texcoord(glyph.x2, glyph.y2);
+ va_builder.vertex(glyph.off_x+glyph.w, glyph.off_y+glyph.h);
+ va_builder.texcoord(glyph.x1, glyph.y2);
+ va_builder.vertex(glyph.off_x, glyph.off_y+glyph.h);
}
-void Font::prepare(float *data) const
+void Font::prepare_render() const
{
tex->bind();
-
- glEnableClientState(GL_TEXTURE_COORD_ARRAY);
- glEnableClientState(GL_VERTEX_ARRAY);
- glTexCoordPointer(2, GL_FLOAT, 4*sizeof(float), data);
- glVertexPointer(2, GL_FLOAT, 4*sizeof(float), data+2);
+ varray.apply();
+ glPushMatrix();
}
-void Font::draw_glyph(wchar_t code, float *data, float &x) const
+void Font::draw_glyph(unsigned code) const
{
GlyphMap::const_iterator i=glyphs.find(code);
if(i==glyphs.end())
return;
- const Glyph &glyph=i->second;
-
- data[0]=data[12]=glyph.x1;
- data[1]=data[5]=glyph.y1;
- data[4]=data[8]=glyph.x2;
- data[9]=data[13]=glyph.y2;
+ glDrawArrays(GL_QUADS, i->second.index*4, 4);
- data[2]=data[14]=x;
- data[3]=data[7]=glyph.descent;
- data[6]=data[10]=x+glyph.w;
- data[11]=data[15]=glyph.h+glyph.descent;
+ glTranslatef(i->second.advance, 0, 0);
+}
- glDrawArrays(GL_QUADS, 0, 4);
+float Font::get_glyph_advance(unsigned code) const
+{
+ GlyphMap::const_iterator i=glyphs.find(code);
+ if(i==glyphs.end())
+ return 0;
- x+=glyph.advance;
+ return i->second.advance;
}
+
Font::Loader::Loader(Font &f):
- font(f)
+ font(f),
+ coll(0)
{
- add("texture", &Loader::texture);
- add("glyph", &Loader::glyph);
+ init();
+}
+
+Font::Loader::Loader(Font &f, Collection &c):
+ font(f),
+ coll(&c)
+{
+ init();
+}
+
+DataFile::Collection &Font::Loader::get_collection()
+{
+ if(!coll)
+ throw InvalidState("No collection");
+ return *coll;
+}
+
+Font::Loader::~Loader()
+{
+ font.create_glyph_vertices();
}
-void Font::Loader::texture(const string &t)
+void Font::Loader::init()
{
- Texture2D *tex=new Texture2D;
- tex->parameter(GL_GENERATE_MIPMAP, 1);
- font.tex=tex;
- tex->image(t);
- font.own_tex=true;
+ add("default_size", &Font::default_size);
+ add("ascent", &Font::ascent);
+ add("descent", &Font::descent);
+ add("texture", &Font::tex);
+ add("glyph", &Loader::glyph);
}
void Font::Loader::glyph(unsigned c)
font.glyphs.insert(GlyphMap::value_type(c, gl));
}
+
Font::Glyph::Loader::Loader(Glyph &g):
glyph(g)
{
add("texcoords", &Loader::texcoords);
- add("size", &Loader::size);
- add("descent", &Glyph::descent);
+ add("size", &Glyph::w, &Glyph::h);
+ add("offset", &Glyph::off_x, &Glyph::off_y);
add("advance", &Glyph::advance);
}
glyph.y2=y2;
}
-void Font::Glyph::Loader::size(float w, float h)
-{
- glyph.w=w;
- glyph.h=h;
-}
-
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff