INNER CODE UNIT · Dart

alpha

best-flutter/transformer_page_view · lib/parallax.dart:38

        alpha = (0xff * opacity).toInt();

        _paint.color = new Color((alpha << 24) | color);
        canvas.drawRect(
            new Rect.fromLTWH(0.0, 0.0, size.width, size.height), _paint);
      }
    } else {
      if (index > 0) {
        color = colors[index - 1].value & 0x00ffffff;
        opacity = (position > 0
            ? position / info.viewportFraction
            : (1 + position / info.viewportFraction));
        if (opacity > 1) {
          opacity -= 1.0;
        }
        if (opacity < 0) {
          opacity += 1.0;
        }

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