// char, largura
private List <(char, int)> CalcCharWidths(string text_line, bool kerning)
{
char?last_char = null;
List <(char, int)> result = new List <(char, int)>(text_line.Length);
foreach (char current_char in text_line)
{
if ((current_char <= char_space) && (last_char == char_space))
{
// ignorar espaços duplos e caracteres de controle
continue;
}
char this_char = (char)Math.Max((int)current_char, (int)char_space);
PdfGlyphMetrics char_metrics = glyphMetrics[(int)this_char];
int width = char_metrics.Width;
if (kerning && (last_char != null))
{
string kerning_pair = $"{glyphMetrics[(int)last_char].GlyphName}+{char_metrics.GlyphName}";
if (kerningPairs.TryGetValue(kerning_pair.GetHashCode(), out int adjust))
{
width += adjust;
}
}
result.Add((this_char, width));
}
return(result);
}
public void AddGlyphMetrics(string glyph_name, int width, int llx, int lly, int urx, int ury)
{
PdfGlyphMetrics glyph_metrics = new PdfGlyphMetrics(glyph_name, width, llx, lly, urx, ury);
int codepoint = PdfFontCharTable.GetCodePoint(glyph_name);
if (!glyphMetrics.ContainsKey(codepoint))
{
glyphMetrics.Add(codepoint, glyph_metrics);
}
}