format method

@override SpriteFontTextElement format(String text)

Implementation

@override
SpriteFontTextElement format(String text) {
  var rects = Float32List(text.length * 4);
  var transforms = Float32List(text.length * 4);
  var j = 0;
  var x0 = 0.0;
  for (final glyph in font.textToGlyphs(text)) {
    rects[j + 0] = glyph.srcLeft;
    rects[j + 1] = glyph.srcTop;
    rects[j + 2] = glyph.srcRight;
    rects[j + 3] = glyph.srcBottom;
    transforms[j + 0] = scale;
    transforms[j + 1] = 0;
    transforms[j + 2] = x0 + (glyph.srcLeft - glyph.left) * scale;
    transforms[j + 3] = (glyph.srcTop - glyph.top - font.ascent) * scale;
    j += 4;
    x0 += glyph.width * scale + letterSpacing;
  }
  if (j < text.length * 4) {
    rects = rects.sublist(0, j);
    transforms = transforms.sublist(0, j);
  }
  return SpriteFontTextElement(
    source: font.source,
    transforms: transforms,
    rects: rects,
    paint: paint,
    metrics: LineMetrics(
      width: x0 - letterSpacing,
      height: font.size * scale,
      ascent: font.ascent * scale,
    ),
  );
}