-#include <msp/gl/immediate.h>
#include <msp/gl/matrix.h>
+#include <msp/gl/meshbuilder.h>
+#include <msp/gl/texture2d.h>
+#include "partcache.h"
#include "style.h"
#include "text.h"
namespace Msp {
namespace GLtk {
-Text::Text(const Style *const &s):
- style(s)
+struct Text::RenderData
+{
+ GL::PrimitiveBuilder *bld;
+};
+
+struct Text::CoordsToGeomData
+{
+ unsigned row;
+ unsigned col;
+ Geometry result;
+};
+
+
+Text::Text():
+ style(0)
{ }
-Text::Text(const Style *const &s, const string &t):
- style(s)
+Text::Text(const Style &s, const string &t):
+ style(&s)
{
set(t);
}
+void Text::set_style(const Style *s)
+{
+ style = s;
+
+ if(style)
+ {
+ const GL::Font &font = style->get_font();
+ float font_size = style->get_font_size();
+ for(vector<Line>::iterator i=lines.begin(); i!=lines.end(); ++i)
+ i->width = static_cast<unsigned>(font.get_string_width(text.substr(i->start, i->length))*font_size);
+ }
+}
+
unsigned Text::get_width() const
{
- unsigned width=0;
+ unsigned width = 0;
for(vector<Line>::const_iterator i=lines.begin(); i!=lines.end(); ++i)
- width=max(width, i->width);
+ width = max(width, i->width);
return width;
}
unsigned Text::get_height() const
{
- const GL::Font *font=style->get_font();
- float font_size=font->get_default_size();
- unsigned line_height=static_cast<unsigned>((font->get_ascent()-font->get_descent())*font_size);
- unsigned line_spacing=line_height*6/5;
+ if(!style)
+ return lines.size();
+
+ const GL::Font &font = style->get_font();
+ float font_size = style->get_font_size();
+ unsigned line_height = static_cast<unsigned>((font.get_ascent()-font.get_descent())*font_size);
+ unsigned line_spacing = line_height*6/5;
return line_height+(lines.size()-1)*line_spacing;
}
+void Text::autosize(const Part &part, Geometry &geom) const
+{
+ const Sides &margin = part.get_margin();
+ geom.w = max(geom.w, get_width()+margin.left+margin.right);
+ geom.h = max(geom.h, get_height()+margin.top+margin.bottom);
+}
+
void Text::set(const string &t)
{
- text=t;
+ text = t;
find_lines();
}
find_lines();
else
{
- i->length-=len;
+ i->length -= len;
for(++i; i!=lines.end(); ++i)
- i->start-=len;
+ i->start -= len;
}
}
vector<Line>::iterator i;
for(i=lines.begin(); (i!=lines.end() && i->start+i->length<pos); ++i) ;
- i->length+=s.size();
+ i->length += s.size();
for(++i; i!=lines.end(); ++i)
- i->start+=s.size();
+ i->start += s.size();
}
}
-void Text::render(const Part &part, const Geometry &geom) const
+unsigned Text::get_line_length(unsigned i) const
+{
+ if(i>=lines.size())
+ throw out_of_range("Text::get_line_length");
+ return lines[i].length;
+}
+
+void Text::offset_to_coords(unsigned offs, unsigned &row, unsigned &col) const
{
if(lines.empty())
+ {
+ row = 0;
+ col = 0;
return;
+ }
- const GL::Font *font=style->get_font();
- float font_size=font->get_default_size();
- unsigned line_height=static_cast<unsigned>((font->get_ascent()-font->get_descent())*font_size);
- unsigned line_spacing=font_size*6/5;
- unsigned height=line_height+(lines.size()-1)*line_spacing;
- int y_offset=static_cast<int>(-font->get_descent()*font_size);
-
- const GL::Color &color=style->get_font_color();
- GL::Immediate imm((GL::COLOR4_UBYTE, GL::TEXCOORD2, GL::VERTEX2));
- imm.color(color.r, color.g, color.b);
for(unsigned i=0; i<lines.size(); ++i)
- {
- const Line &line=lines[i];
+ if(offs>=lines[i].start && offs<=lines[i].start+lines[i].length)
+ {
+ row = i;
+ col = offs-lines[i].start;
+ return;
+ }
+}
- Geometry rgeom;
- rgeom.w=line.width;
- rgeom.h=height;
- rgeom.y=(lines.size()-1-i)*line_spacing+y_offset;
- part.get_alignment().apply(rgeom, geom, part.get_margin());
+unsigned Text::coords_to_offset(unsigned row, unsigned col) const
+{
+ if(row>=lines.size())
+ return text.size();
- GL::push_matrix();
- GL::translate(rgeom.x, rgeom.y, 0);
- GL::scale_uniform(font_size);
+ return lines[row].start+min(col, lines[row].length);
+}
- font->draw_string(text.substr(line.start, line.length), imm);
+Geometry Text::coords_to_geometry(const Part &part, const Geometry &parent, unsigned first_row, unsigned row, unsigned col) const
+{
+ if(row>=lines.size())
+ row = lines.size()-1;
+ const Line &line = lines[row];
+ if(col>line.length)
+ col = line.length;
- GL::pop_matrix();
- }
+ CoordsToGeomData data;
+ data.row = row;
+ data.col = col;
+
+ process_lines(part, parent, first_row, &Text::coords_to_geom_line, data);
+
+ return data.result;
+}
+
+void Text::build(const Part &part, State state, const Geometry &parent, PartCache &cache) const
+{
+ build(part, state, parent, 0, cache);
+}
+
+void Text::build(const Part &part, State state, const Geometry &parent, unsigned first_row, PartCache &cache) const
+{
+ if(!style || lines.empty())
+ return;
+
+ const GL::Font &font = style->get_font();
+ GL::MeshBuilder bld(cache.create_mesh(part, font.get_texture()));
+ bld.color(style->get_font_color(state));
+
+ RenderData data;
+ data.bld = &bld;
+
+ process_lines(part, parent, first_row, &Text::build_line, data);
}
Text &Text::operator=(const string &t)
void Text::find_lines()
{
lines.clear();
- float font_size=style->get_font()->get_default_size();
- string::size_type start=0;
+ float font_size = (style ? style->get_font_size() : 1);
+ string::size_type start = 0;
while(1)
{
- string::size_type newline=text.find('\n', start);
+ string::size_type newline = text.find('\n', start);
Line line;
- line.start=start;
- line.length=(newline==string::npos ? text.size() : newline)-start;
- line.width=static_cast<unsigned>(style->get_font()->get_string_width(text.substr(line.start, line.length))*font_size);
+ line.start = start;
+ line.length = (newline==string::npos ? text.size() : newline)-start;
+ line.width = line.length;
+ if(style)
+ {
+ string str = text.substr(line.start, line.length);
+ line.width = static_cast<unsigned>(style->get_font().get_string_width(str)*font_size);
+ }
lines.push_back(line);
if(newline==string::npos)
break;
- start=newline+1;
+ start = newline+1;
+ }
+}
+
+template<typename T>
+void Text::process_lines(const Part &part, const Geometry &parent, unsigned first_row, void (Text::*func)(unsigned, const Geometry &, T &) const, T &data) const
+{
+ if(!style)
+ return;
+
+ const GL::Font &font = style->get_font();
+ float font_size = style->get_font_size();
+ unsigned line_height = static_cast<unsigned>((font.get_ascent()-font.get_descent())*font_size);
+ unsigned line_spacing = static_cast<unsigned>(font_size*6/5);
+ unsigned height = line_height+(lines.size()-1)*line_spacing;
+ int y_offset = static_cast<int>(-font.get_descent()*font_size);
+
+ const Sides &margin = part.get_margin();
+ unsigned fit_height = parent.h-margin.top-margin.bottom+line_spacing-line_height;
+ unsigned n_lines = min<unsigned>(lines.size(), max(fit_height/line_spacing, 1U));
+ first_row = min<unsigned>(first_row, lines.size()-n_lines);
+
+ for(unsigned i=0; i<n_lines; ++i)
+ {
+ const Line &line = lines[first_row+i];
+
+ Geometry rgeom;
+ rgeom.w = line.width;
+ rgeom.h = height;
+ rgeom.y = (n_lines-1-i)*line_spacing+y_offset;
+ part.get_alignment().apply(rgeom, parent, part.get_margin());
+
+ (this->*func)(first_row+i, rgeom, data);
+ }
+}
+
+void Text::build_line(unsigned i, const Geometry &rgeom, RenderData &data) const
+{
+ const Line &line = lines[i];
+
+ GL::MatrixStack::Push _pushm(data.bld->matrix());
+ data.bld->matrix() *= GL::Matrix::translation(rgeom.x, rgeom.y, 0);
+ data.bld->matrix() *= GL::Matrix::scaling(style->get_font_size());
+
+ style->get_font().build_string(text.substr(line.start, line.length), *data.bld);
+}
+
+void Text::coords_to_geom_line(unsigned i, const Geometry &rgeom, CoordsToGeomData &data) const
+{
+ if(i==data.row)
+ {
+ float w = style->get_font().get_string_width(text.substr(lines[i].start, data.col));
+ data.result = rgeom;
+ data.result.x += static_cast<unsigned>(w*style->get_font_size());
}
}
projects / libs / gltk.git / blobdiff