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updated measure_ucs2_text_line

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Jon Daniel 2005-03-04 16:52:07 +00:00
parent 6a2170af5e
commit d5fce8801d
1 changed files with 34 additions and 13 deletions
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47
src/font.cpp
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@ -577,52 +577,73 @@ surface get_rendered_text(const std::string& str, int size, const SDL_Color& col
return render_text(str, size, colour, style);
}
//measure a single line of ucs2 text with a specific font_size and style
//without newline chars.
//Measure a single line of ucs2 text with a specific font_size and
//style without newline chars.
//
//This is INSECURE with lines which are WIDER than UINT16_MAX pixels.
//
//It is intended for the command_line widget only which has a line
//length restriction and small font size.
SDL_Rect measure_ucs2_text_line(ucs2_string::const_iterator first, ucs2_string::const_iterator last, int font_size, int style) {
wassert(last - first >= 0);
ucs2_string chunk((last - first ) + 2);
SDL_Rect rect;
rect.w = 0;
rect.h = 0;
ucs2_string chunk((last - first ) + 2);
ucs2_string::iterator chunk_itor = chunk.begin();
*chunk_itor = 0;
int current_font = 0;
//set the font for the first char
if(*first < font_map.size() && font_map[*first] >= 0) {
current_font = font_map[*first];
}
}
for(;first != last; ++first) {
if(*first < font_map.size() && font_map[*first] >= 0 && font_map[*first] != current_font) {
TTF_Font* ttfont = get_font(font_id(current_font, font_size));
if(ttfont == NULL) {
chunk.clear();
chunk_itor = chunk.begin();
*(chunk_itor++) = *first;
current_font = font_map[*first];
continue;
}
chunk.push_back(0);
*(chunk_itor++) = 0;
font_style_setter const style_setter(ttfont, style);
TTF_SizeUNICODE(ttfont, (Uint16 const *)&chunk.front(), (int*)&rect.x, (int*)&rect.y);
rect.w += rect.x;
rect.h = maximum<Sint16>(rect.h, rect.y);
chunk.clear();
chunk_itor = chunk.begin();
current_font = font_map[*first];
}
chunk.push_back(*first);
*(chunk_itor++) = *first;
}
if (!chunk.empty()) {
if (chunk_itor != chunk.begin()) {
TTF_Font* ttfont = get_font(font_id(current_font, font_size));
if(ttfont == NULL) {
rect.x = 0;
rect.y = 0;
return rect;
}
chunk.push_back(0);
*(chunk_itor++) = 0;
font_style_setter const style_setter(ttfont, style);
TTF_SizeUNICODE(ttfont, (Uint16 const *)&chunk.front(), (int*)&rect.x, (int*)&rect.y);
rect.w += rect.x;
rect.h = maximum<Sint16>(rect.h, rect.y);
}
//reset rect.x and rec.y because we abused it to store the area
//of the last chunk
rect.x = 0;
rect.y = 0;
return rect;