fromWire static method

ScenePaint? fromWire(Object? raw)

Total, like every fromWire here: an unreadable payload is null rather than a throw, and null means "the text's own colour".

Implementation

static ScenePaint? fromWire(Object? raw) => switch (raw) {
  // A bare number is a solid colour — the cheapest spelling, and what a
  // colour already travels as everywhere else.
  num argb => SolidPaint(SceneColor(argb.toInt())),
  Map m when m['k'] == 'linear' => LinearPaint(
    colors: _wireColors(m),
    stops: _wireStops(m),
    begin: SceneAlignment.fromWire(m['begin'], SceneAlignment.topCenter),
    end: SceneAlignment.fromWire(m['end'], SceneAlignment.bottomCenter),
  ),
  Map m when m['k'] == 'radial' => RadialPaint(
    colors: _wireColors(m),
    stops: _wireStops(m),
    center: SceneAlignment.fromWire(m['center'], SceneAlignment.center),
    radius: _wireDouble(m['r'], 1),
  ),
  Map m when m['k'] == 'sweep' => SweepPaint(
    colors: _wireColors(m),
    stops: _wireStops(m),
    center: SceneAlignment.fromWire(m['center'], SceneAlignment.center),
    startAngle: _wireDouble(m['a0'], 0),
    endAngle: _wireDouble(m['a1'], 360),
  ),
  Map m when m['k'] == 'shader' => switch (m['asset']) {
    String asset => ShaderPaint(asset, uniforms: _wireUniforms(m['u'])),
    _ => null,
  },
  _ => null,
};