+#include <msp/core/algorithm.h>
#include <msp/gl/matrix.h>
#include <msp/gl/meshbuilder.h>
#include <msp/gl/texture2d.h>
struct Text::CoordsToGeomData
{
- unsigned row;
- unsigned col;
+ size_t row;
+ size_t col;
Geometry result;
};
Text::Text():
- style(0)
+ lines(1)
{ }
Text::Text(const Style &s, const string &t):
{
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;
}
find_lines();
}
-void Text::erase(unsigned pos, unsigned len)
+void Text::erase(size_t pos, size_t 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)
+void Text::insert(size_t 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();
}
}
-unsigned Text::get_visible_lines(const Part &part, const Geometry &parent, unsigned *fit_height) const
+size_t Text::get_visible_lines(const Part &part, const Geometry &parent, unsigned *fit_height) const
{
const GL::Font &font = style->get_font();
float font_size = style->get_font_size();
unsigned line_spacing = static_cast<unsigned>(font_size*6/5);
const Sides &margin = part.get_margin();
- unsigned vmargin = margin.top+margin.bottom+line_height-line_spacing;
- unsigned n_lines = min<unsigned>(lines.size(), max((max(parent.h, vmargin)-vmargin)/line_spacing, 1U));
+ unsigned vmargin = margin.top+margin.bottom;
+ unsigned free_height = max(parent.h, vmargin)-vmargin+line_spacing-line_height;
+ size_t n_lines = min<size_t>(lines.size(), max(free_height/line_spacing, 1U));
if(fit_height)
*fit_height = line_height+(n_lines-1)*line_spacing;
return n_lines;
}
-unsigned Text::get_line_length(unsigned i) const
+size_t Text::get_line_length(size_t 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
+size_t Text::move_offset(size_t offs, ptrdiff_t 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(size_t offs, size_t &row, size_t &col) const
{
if(lines.empty())
{
return;
}
- for(unsigned i=0; i<lines.size(); ++i)
- if(offs>=lines[i].start && offs<=lines[i].start+lines[i].length)
+ for(size_t i=0; i<lines.size(); ++i)
+ 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;
}
}
-unsigned Text::coords_to_offset(unsigned row, unsigned col) const
+size_t Text::coords_to_offset(size_t row, size_t col) const
{
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
+Geometry Text::coords_to_geometry(const Part &part, const Geometry &parent, size_t first_row, size_t row, size_t col) const
{
if(row>=lines.size())
row = lines.size()-1;
build(part, state, parent, 0, cache);
}
-void Text::build(const Part &part, State state, const Geometry &parent, unsigned first_row, PartCache &cache) const
+void Text::build(const Part &part, State state, const Geometry &parent, size_t first_row, PartCache &cache) const
{
if(!style || lines.empty())
return;
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);
}
}
+size_t Text::count_characters(size_t start, size_t bytes) const
+{
+ StringCodec::Utf8::Decoder dec;
+ auto i = text.begin()+start;
+ auto end = i+bytes;
+ size_t count = 0;
+ for(; i<end; dec.decode_char(text, i))
+ ++count;
+ return count;
+}
+
+void Text::check_alignment(size_t 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
+void Text::process_lines(const Part &part, const Geometry &parent, size_t first_row, void (Text::*func)(size_t, const Geometry &, T &) const, T &data) const
{
if(!style)
return;
int y_offset = static_cast<int>(-font.get_descent()*font_size);
unsigned fit_height;
- unsigned n_lines = get_visible_lines(part, parent, &fit_height);
- first_row = min<unsigned>(first_row, lines.size()-n_lines);
+ size_t n_lines = get_visible_lines(part, parent, &fit_height);
+ first_row = min(first_row, lines.size()-n_lines);
- for(unsigned i=0; i<n_lines; ++i)
+ for(size_t i=0; i<n_lines; ++i)
{
const Line &line = lines[first_row+i];
}
}
-void Text::build_line(unsigned i, const Geometry &rgeom, RenderData &data) const
+void Text::build_line(size_t 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());
+ 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
+void Text::coords_to_geom_line(size_t 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(size_t 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