paint static method

void paint(Canvas canvas, UDocMarkupKind kind, List<Rect> rects, Color color, { bool selected = false, bool hasNote = false, bool rtl = false, bool drawBadge = true, })

Implementation

static void paint(Canvas canvas, UDocMarkupKind kind, List<Rect> rects, Color color, {bool selected = false, bool hasNote = false, bool rtl = false, bool drawBadge = true}) {
  if (rects.isEmpty) return;
  switch (kind) {
    case UDocMarkupKind.highlight:
      final Paint fill = Paint()..color = color.withValues(alpha: 0.38);
      for (final Rect rect in rects) {
        canvas.drawRRect(RRect.fromRectAndRadius(rect.inflate(0.6), Radius.circular(rect.height * 0.12)), fill);
      }
      break;
    case UDocMarkupKind.underline:
      final Paint line = Paint()
        ..color = color
        ..strokeCap = StrokeCap.round;
      for (final Rect rect in rects) {
        line.strokeWidth = max(1.2, rect.height * 0.08);
        canvas.drawLine(Offset(rect.left, rect.bottom - line.strokeWidth / 2), Offset(rect.right, rect.bottom - line.strokeWidth / 2), line);
      }
      break;
    case UDocMarkupKind.strikeThrough:
      final Paint line = Paint()
        ..color = color
        ..strokeCap = StrokeCap.round;
      for (final Rect rect in rects) {
        line.strokeWidth = max(1.2, rect.height * 0.08);
        canvas.drawLine(Offset(rect.left, rect.center.dy), Offset(rect.right, rect.center.dy), line);
      }
      break;
    case UDocMarkupKind.squiggly:
      final Paint wave = Paint()
        ..color = color
        ..style = PaintingStyle.stroke
        ..strokeJoin = StrokeJoin.round;
      for (final Rect rect in rects) {
        final double amplitude = max(1, rect.height * 0.08);
        final double step = max(2, rect.height * 0.22);
        wave.strokeWidth = max(1, rect.height * 0.06);
        final Path path = Path()..moveTo(rect.left, rect.bottom - amplitude);
        bool up = true;
        for (double x = rect.left + step; x <= rect.right + 0.1; x += step) {
          path.lineTo(x, up ? rect.bottom - amplitude * 2 : rect.bottom);
          up = !up;
        }
        canvas.drawPath(path, wave);
      }
      break;
    case UDocMarkupKind.border:
      final Paint stroke = Paint()
        ..color = color
        ..style = PaintingStyle.stroke;
      for (final Rect rect in rects) {
        stroke.strokeWidth = max(1.2, rect.height * 0.07);
        canvas.drawRRect(RRect.fromRectAndRadius(rect.inflate(stroke.strokeWidth + 0.5), Radius.circular(rect.height * 0.15)), stroke);
      }
      break;
    case UDocMarkupKind.note:
      final Paint fill = Paint()..color = color.withValues(alpha: 0.16);
      final Paint line = Paint()
        ..color = color
        ..strokeWidth = 1.2
        ..style = PaintingStyle.stroke;
      for (final Rect rect in rects) {
        canvas.drawRect(rect.inflate(0.5), fill);
        _dashed(canvas, Offset(rect.left, rect.bottom), Offset(rect.right, rect.bottom), line, max(2, rect.height * 0.18));
      }
      break;
  }
  if (selected) outline(canvas, rects);
  if (drawBadge && (hasNote || kind == UDocMarkupKind.note)) {
    final Rect anchor = rtl ? rects.first : rects.last;
    final double size = (anchor.height * 0.9).clamp(8, 22).toDouble();
    badge(canvas, Offset(rtl ? anchor.left - size * 0.35 : anchor.right + size * 0.35, anchor.top - size * 0.35), color, size);
  }
}