-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
+#include <msp/core/maputils.h>
#include <msp/datafile/collection.h>
+#include "bindable.h"
#include "gl.h"
#include "font.h"
#include "immediate.h"
namespace GL {
Font::Font():
- tex(0),
- own_tex(false),
- default_size(1),
+ native_size(1),
ascent(1),
- descent(0)
+ descent(0),
+ cap_height(1),
+ x_height(0.5)
{ }
+// Avoid synthesizing ~RefPtr in files including font.h
Font::~Font()
-{
- if(own_tex)
- delete tex;
-}
+{ }
void Font::set_texture(const Texture2D &t)
{
- if(own_tex)
- delete tex;
-
- tex=&t;
- own_tex=false;
+ texture = &t;
+ texture.keep();
}
const Texture2D &Font::get_texture() const
{
- if(!tex)
- throw InvalidState("No texture");
- return *tex;
+ if(!texture)
+ throw logic_error("No texture");
+ return *texture;
}
-void Font::add_glyph(unsigned code, float x1, float y1, float x2, float y2, float w, float h, float ox, float oy, float adv)
+void Font::add_glyph(const Glyph &g)
{
- 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));
+ insert_unique(glyphs, g.code, g);
}
-float Font::get_string_width(const string &str, Codecs::Decoder &dec) const
+void Font::set_kerning(unsigned l, unsigned r, float d)
{
- float x=0;
+ kerning[KerningKey(l, r)] = d;
+}
+
+float Font::get_string_width(const string &str, StringCodec::Decoder &dec) const
+{
+ float x = 0;
+ unsigned prev = 0;
for(string::const_iterator i=str.begin(); i!=str.end();)
- x+=get_glyph_advance(dec.decode_char(str, i));
+ {
+ unsigned c = dec.decode_char(str, i);
+ if(prev)
+ x += get_glyph_advance(prev, c);
+ prev = c;
+ }
+ x += get_glyph_advance(prev);
return x;
}
-void Font::draw_string(const string &str, Codecs::Decoder &dec) const
+void Font::draw_string(const string &str, StringCodec::Decoder &dec, const Color &color) const
{
- Immediate imm((TEXCOORD2, VERTEX2));
- draw_string(str, dec, imm);
+ BindRestore bind_tex(get_texture());
+ Immediate imm((TEXCOORD2, COLOR4_UBYTE, VERTEX2));
+ imm.color(color);
+ build_string(str, dec, imm);
}
-void Font::draw_string(const string &str, Codecs::Decoder &dec, PrimitiveBuilder &pbuilder) const
+void Font::build_string(const string &str, StringCodec::Decoder &dec, PrimitiveBuilder &bld) const
{
- if(!tex)
- throw InvalidState("No texture");
-
- tex->bind();
+ MatrixStack::Push push_mtx(bld.matrix());
- float x=0;
- unsigned count=0;
-
- pbuilder.begin(QUADS);
+ unsigned prev = 0;
for(string::const_iterator i=str.begin(); i!=str.end();)
{
- GlyphMap::const_iterator j=glyphs.find(dec.decode_char(str, i));
+ unsigned c = dec.decode_char(str, i);
+ GlyphMap::const_iterator j = glyphs.find(c);
if(j==glyphs.end())
continue;
- create_glyph_vertices(j->second, pbuilder, x);
- x+=j->second.advance;
- count+=4;
+ if(prev)
+ bld.matrix() *= Matrix::translation(get_glyph_advance(prev, c), 0, 0);
+
+ create_glyph_quad(j->second, bld);
+ prev = c;
}
- pbuilder.end();
}
-void Font::create_glyph_vertices(const Glyph &glyph, VertexBuilder &vbuilder, float x) const
+void Font::create_glyph_quad(const Glyph &glyph, PrimitiveBuilder &bld) 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);
+ bld.begin(TRIANGLE_STRIP);
+ bld.texcoord(glyph.x1, glyph.y2);
+ bld.vertex(glyph.off_x, glyph.off_y+glyph.h);
+ bld.texcoord(glyph.x1, glyph.y1);
+ bld.vertex(glyph.off_x, glyph.off_y);
+ bld.texcoord(glyph.x2, glyph.y2);
+ bld.vertex(glyph.off_x+glyph.w, glyph.off_y+glyph.h);
+ bld.texcoord(glyph.x2, glyph.y1);
+ bld.vertex(glyph.off_x+glyph.w, glyph.off_y);
+ bld.end();
}
-float Font::get_glyph_advance(unsigned code) const
+float Font::get_glyph_advance(unsigned code, unsigned next) const
{
- GlyphMap::const_iterator i=glyphs.find(code);
+ GlyphMap::const_iterator i = glyphs.find(code);
if(i==glyphs.end())
return 0;
- return i->second.advance;
+ float advance = i->second.advance;
+
+ if(next)
+ {
+ KerningMap::const_iterator j = kerning.find(KerningKey(code, next));
+ if(j!=kerning.end())
+ advance += j->second;
+ }
+
+ return advance;
}
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);
+ add("native_size", &Font::native_size);
+ add("ascent", &Font::ascent);
+ add("cap_height", &Font::cap_height);
+ add("descent", &Font::descent);
+ add("texture", &Loader::texture);
+ add("texture", &Loader::texture_ref);
+ add("glyph", &Loader::glyph);
+ add("kerning", &Loader::kerning);
+ add("x_height", &Font::x_height);
}
void Font::Loader::glyph(unsigned c)
{
Glyph gl;
- gl.code=c;
+ gl.code = c;
load_sub(gl);
obj.glyphs.insert(GlyphMap::value_type(c, gl));
}
-void Font::Loader::texture_inline()
+void Font::Loader::kerning(unsigned l, unsigned r, float d)
{
- RefPtr<Texture2D> tex=new Texture2D;
+ obj.kerning[KerningKey(l, r)] = d;
+}
+
+void Font::Loader::texture()
+{
+ RefPtr<Texture2D> tex = new Texture2D;
load_sub(*tex);
- obj.tex=tex.release();
- obj.own_tex=true;
+ obj.texture = tex;
+}
+
+void Font::Loader::texture_ref(const string &name)
+{
+ obj.texture = &get_collection().get<Texture2D>(name);
+ obj.texture.keep();
}
add("advance", &Glyph::advance);
}
-void Font::Glyph::Loader::texcoords(float x1, float y1, float x2, float y2)
+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;
+ obj.x1 = x1_;
+ obj.y1 = y1_;
+ obj.x2 = x2_;
+ obj.y2 = y2_;
}
} // namespace GL
projects / libs / gl.git / blobdiff