-#include "meshbuilder.h"
-#include "text.h"
-#include "texture2d.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-Text::Text(const Font &f, const Technique *tech):
- font(f),
- mesh((TEXCOORD2, VERTEX2)),
- horz_align(0.0f),
- vert_offset(0.0f)
-{
- object.set_mesh(&mesh);
- if(tech)
- set_technique(tech);
-}
-
-void Text::set_technique(const Technique *tech)
-{
- if(tech)
- {
- technique = *tech;
- technique.replace_texture("diffusemap", font.get_texture());
- object.set_technique(&technique);
- }
- else
- object.set_technique(0);
-}
-
-void Text::set_text(const string &text, StringCodec::Decoder &dec)
-{
- clear();
- width = font.get_string_width(text, dec);
- GL::MeshBuilder bld(mesh);
- bld.matrix() *= Matrix::translation(Vector3(-horz_align*width, vert_offset, 0.0f));
- font.build_string(text, dec, bld);
-}
-
-void Text::clear()
-{
- mesh.clear();
- width = 0;
-}
-
-void Text::set_alignment(HorizontalAlign ha, VerticalAlign va)
-{
- float h;
- switch(ha)
- {
- case LEFT: h = 0.0f; break;
- case CENTER: h = 0.5f; break;
- case RIGHT: h = 1.0f; break;
- default: throw invalid_argument("Text::set_alignment");
- }
-
- float v;
- switch(va)
- {
- case DESCENT: v = -font.get_descent(); break;
- case BASELINE: v = 0.0f; break;
- case MIDLINE: v = font.get_cap_height()/2; break;
- case ASCENT: v = font.get_ascent(); break;
- default: throw invalid_argument("Text::set_alignment");
- }
-
- set_alignment(h, v);
-}
-
-void Text::set_alignment(float h, float v)
-{
- if(h==horz_align && -v==vert_offset)
- return;
-
- float horz_adjust = (horz_align-h)*width;
- float vert_adjust = -v-vert_offset;
- horz_align = h;
- vert_offset = -v;
-
- unsigned pos_offset = mesh.get_vertices().get_format().offset(VERTEX2);
- unsigned n_vertices = mesh.get_n_vertices();
- for(unsigned i=0; i<n_vertices; ++i)
- {
- float *pos = mesh.modify_vertex(i)+pos_offset;
- pos[0] += horz_adjust;
- pos[1] += vert_adjust;
- }
-}
-
-void Text::render(Renderer &renderer, const Tag &tag) const
-{
- object.render(renderer, tag);
-}
-
-} // namespace GL
-} // namespace Msp