+#include <msp/core/algorithm.h>
#include <msp/gl/matrix.h>
#include <msp/gl/meshbuilder.h>
#include <msp/gl/texture2d.h>
Text::Text():
style(0)
-{ }
+{
+ Line line;
+ line.start = 0;
+ line.bytes = 0;
+ line.length = 0;
+ line.width = 0;
+ lines.push_back(line);
+}
Text::Text(const Style &s, const string &t):
style(&s)
{
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);
+ for(Line &l: lines)
+ l.width = static_cast<unsigned>(font.get_string_width(text.substr(l.start, l.bytes))*font_size);
}
}
unsigned Text::get_width() const
{
unsigned width = 0;
- for(vector<Line>::const_iterator i=lines.begin(); i!=lines.end(); ++i)
- width = max(width, i->width);
+ for(const Line &l: lines)
+ width = max(width, l.width);
return width;
}
void Text::erase(unsigned pos, unsigned len)
{
+ check_alignment(pos);
+ check_alignment(pos+len);
text.erase(pos, len);
- vector<Line>::iterator i;
- for(i=lines.begin(); (i!=lines.end() && i->start+i->length<pos); ++i) ;
+ auto i = find_if(lines, [pos](const Line &l){ return l.start+l.bytes>=pos; });
- if(pos+len>i->start+i->length)
+ if(pos+len>i->start+i->bytes)
find_lines();
else
{
- i->length -= len;
+ i->bytes -= len;
+ i->length = count_characters(i->start, i->bytes);
for(++i; i!=lines.end(); ++i)
i->start -= len;
void Text::insert(unsigned pos, const string &s)
{
+ check_alignment(pos);
text.insert(pos, s);
if(s.find('\n')!=string::npos)
find_lines();
else
{
- vector<Line>::iterator i;
- for(i=lines.begin(); (i!=lines.end() && i->start+i->length<pos); ++i) ;
+ auto i = find_if(lines, [pos](const Line &l){ return l.start+l.bytes>=pos; });
- i->length += s.size();
+ i->bytes += s.size();
+ i->length = count_characters(i->start, i->bytes);
for(++i; i!=lines.end(); ++i)
i->start += s.size();
return lines[i].length;
}
+unsigned Text::move_offset(unsigned offs, int change) const
+{
+ check_alignment(offs);
+ if(!change)
+ return offs;
+
+ StringCodec::Utf8::Decoder dec(StringCodec::IGNORE_ERRORS);
+ auto i = text.begin()+offs;
+ if(change>0)
+ {
+ for(; change>0; --change)
+ dec.decode_char(text, i);
+ }
+ else
+ {
+ while(change<0 && i!=text.begin())
+ {
+ --i;
+ auto j = i;
+ if(dec.decode_char(text, j)!=-1)
+ ++change;
+ }
+ }
+ return i-text.begin();
+}
+
void Text::offset_to_coords(unsigned offs, unsigned &row, unsigned &col) const
{
if(lines.empty())
}
for(unsigned i=0; i<lines.size(); ++i)
- if(offs>=lines[i].start && offs<=lines[i].start+lines[i].length)
+ if(offs>=lines[i].start && offs<=lines[i].start+lines[i].bytes)
{
row = i;
- col = offs-lines[i].start;
+ if(lines[i].length==lines[i].bytes)
+ col = offs-lines[i].start;
+ else
+ col = count_characters(lines[i].start, offs-lines[i].start);
return;
}
}
{
if(row>=lines.size())
return text.size();
+ const Line &line = lines[row];
+ if(col>line.length)
+ col = line.length;
- return lines[row].start+min(col, lines[row].length);
+ if(line.length==line.bytes)
+ return line.start+col;
+ else
+ {
+ StringCodec::Utf8::Decoder dec;
+ auto i = text.begin()+line.start;
+ for(col=min(col, line.length); col; --col)
+ dec.decode_char(text, i);
+ return i-text.begin();
+ }
}
Geometry Text::coords_to_geometry(const Part &part, const Geometry &parent, unsigned first_row, unsigned row, unsigned col) const
Line line;
line.start = start;
- line.length = (newline==string::npos ? text.size() : newline)-start;
+ line.bytes = (newline==string::npos ? text.size() : newline)-start;
+ line.length = count_characters(line.start, line.bytes);
line.width = line.length;
if(style)
{
- string str = text.substr(line.start, line.length);
+ string str = text.substr(line.start, line.bytes);
line.width = static_cast<unsigned>(style->get_font().get_string_width(str)*font_size);
}
lines.push_back(line);
}
}
+unsigned Text::count_characters(unsigned start, unsigned bytes) const
+{
+ StringCodec::Utf8::Decoder dec;
+ auto i = text.begin()+start;
+ auto end = i+bytes;
+ unsigned count = 0;
+ for(; i<end; dec.decode_char(text, i))
+ ++count;
+ return count;
+}
+
+void Text::check_alignment(unsigned offs) const
+{
+ StringCodec::Utf8::Decoder dec;
+ auto i = text.begin()+offs;
+ dec.decode_char(text, i);
+}
+
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
{
{
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());
+ GL::VertexBuilder::PushMatrix _pushm(*data.bld);
+ data.bld->transform(GL::Matrix::translation(rgeom.x, rgeom.y, 0));
+ data.bld->transform(GL::Matrix::scaling(style->get_font_size()));
- style->get_font().build_string(text.substr(line.start, line.length), *data.bld);
+ style->get_font().build_string(text.substr(line.start, line.bytes), *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));
+ auto begin = text.begin()+lines[i].start;
+ auto j = begin;
+ if(lines[i].length==lines[i].bytes)
+ j += data.col;
+ else
+ {
+ StringCodec::Utf8::Decoder dec;
+ for(unsigned c=data.col; c; --c)
+ dec.decode_char(text, j);
+ }
+ float w = style->get_font().get_string_width(string(begin, j));
data.result = rgeom;
data.result.x += static_cast<unsigned>(w*style->get_font_size());
}
projects / libs / gltk.git / blobdiff