X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftext.cpp;h=8ef17392f353259c0fa83ec95b1f5b4e6a08a41c;hb=bf4dbeb94ef7ce7fc7f9fb3e5f1d75cfe5cefff2;hp=5f4095e135b33f65dfcb0fca73b171d19645c761;hpb=1e06dc208a02e68cf1bb127927e3ad5af3657c58;p=libs%2Fgltk.git diff --git a/source/text.cpp b/source/text.cpp index 5f4095e..8ef1739 100644 --- a/source/text.cpp +++ b/source/text.cpp @@ -1,5 +1,7 @@ -#include #include +#include +#include +#include "partcache.h" #include "style.h" #include "text.h" @@ -8,98 +10,179 @@ using namespace std; 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::iterator i=lines.begin(); i!=lines.end(); ++i) + i->width = static_cast(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::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((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((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::set(const string &t) +void Text::autosize(const Part &part, Geometry &geom) const { - text=t; - lines.clear(); - float font_size=style->get_font()->get_default_size(); - unsigned start=0; - while(1) - { - unsigned newline=text.find('\n', start); - - Line line; - line.start=start; - line.length=(newline==string::npos ? text.size() : newline)-start; - line.width=static_cast(style->get_font()->get_string_width(text.substr(line.start, line.length))*font_size); - lines.push_back(line); + 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); +} - if(newline==string::npos) - break; - start=newline+1; - } +void Text::set(const string &t) +{ + text = t; + find_lines(); } void Text::erase(unsigned pos, unsigned len) { text.erase(pos, len); + + vector::iterator i; + for(i=lines.begin(); (i!=lines.end() && i->start+i->lengthi->start+i->length) + find_lines(); + else + { + i->length -= len; + + for(++i; i!=lines.end(); ++i) + i->start -= len; + } } void Text::insert(unsigned pos, const string &s) { text.insert(pos, s); + + if(s.find('\n')!=string::npos) + find_lines(); + else + { + vector::iterator i; + for(i=lines.begin(); (i!=lines.end() && i->start+i->lengthlength += s.size(); + + for(++i; i!=lines.end(); ++i) + i->start += s.size(); + } +} + +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::render(const Part &part, const Geometry &geom) const +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((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(-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[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, 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, data); } Text &Text::operator=(const string &t) @@ -108,5 +191,84 @@ Text &Text::operator=(const string &t) return *this; } +void Text::find_lines() +{ + lines.clear(); + float font_size = (style ? style->get_font_size() : 1); + string::size_type start = 0; + while(1) + { + string::size_type newline = text.find('\n', start); + + Line line; + 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(style->get_font().get_string_width(str)*font_size); + } + lines.push_back(line); + + if(newline==string::npos) + break; + start = newline+1; + } +} + +template +void Text::process_lines(const Part &part, const Geometry &parent, unsigned first_row, 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((font.get_ascent()-font.get_descent())*font_size); + unsigned line_spacing = static_cast(font_size*6/5); + unsigned height = line_height+(lines.size()-1)*line_spacing; + int y_offset = static_cast(-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(lines.size(), max(fit_height/line_spacing, 1U)); + first_row = min(first_row, lines.size()-n_lines); + + for(unsigned i=0; i*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(w*style->get_font_size()); + } +} + } // namespace GLtk } // namespace Msp