+/* $Id$
+
+This file is part of libmspgltk
+Copyright © 2009-2010 Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
#include <msp/gl/immediate.h>
#include <msp/gl/matrix.h>
#include "style.h"
namespace Msp {
namespace GLtk {
-Text::Text(const Style *const &s):
- style(s)
+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;
+
+ float font_size = style->get_font()->get_default_size();
+ for(vector<Line>::iterator i=lines.begin(); i!=lines.end(); ++i)
+ i->width = static_cast<unsigned>(style->get_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;
+ 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;
return line_height+(lines.size()-1)*line_spacing;
}
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::update_style()
+unsigned Text::get_line_length(unsigned i) const
{
- float font_size=style->get_font()->get_default_size();
- for(vector<Line>::iterator i=lines.begin(); i!=lines.end(); ++i)
- i->width=static_cast<unsigned>(style->get_font()->get_string_width(text.substr(i->start, i->length))*font_size);
+ if(i>=lines.size())
+ throw InvalidParameterValue("Invalid line number");
+ return lines[i].length;
+}
+
+void Text::offset_to_coords(unsigned offs, unsigned &row, unsigned &col) const
+{
+ if(lines.empty())
+ {
+ row = 0;
+ col = 0;
+ return;
+ }
+
+ for(unsigned i=0; i<lines.size(); ++i)
+ if(offs>=lines[i].start && offs<=lines[i].start+lines[i].length)
+ {
+ row = i;
+ col = offs-lines[i].start;
+ return;
+ }
+}
+
+unsigned Text::coords_to_offset(unsigned row, unsigned col) const
+{
+ if(row>=lines.size())
+ return text.size();
+
+ return lines[row].start+min(col, lines[row].length);
+}
+
+Geometry Text::coords_to_geometry(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;
+
+ 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 = 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);
+
+ Geometry geom;
+ geom.w = line.width;
+ geom.h = height;
+ geom.x = static_cast<unsigned>(font->get_string_width(text.substr(line.start, col))*font_size);
+ geom.y = (lines.size()-1-row)*line_spacing+y_offset;
+
+ return geom;
}
void Text::render(const Part &part, const Geometry &geom) const
if(lines.empty())
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::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 = 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 GL::Color &color=style->get_font_color();
+ 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];
+ const Line &line = lines[i];
Geometry rgeom;
- rgeom.w=line.width;
- rgeom.h=height;
- rgeom.y=(lines.size()-1-i)*line_spacing+y_offset;
+ 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());
GL::push_matrix();
void Text::find_lines()
{
lines.clear();
- float font_size=style->get_font()->get_default_size();
- string::size_type start=0;
+ float font_size = style->get_font()->get_default_size();
+ 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 = static_cast<unsigned>(style->get_font()->get_string_width(text.substr(line.start, line.length))*font_size);
lines.push_back(line);
if(newline==string::npos)
break;
- start=newline+1;
+ start = newline+1;
}
}
projects / libs / gltk.git / blobdiff