tryFromRgbaString static method
Try to parse the rgba(red, greed, blue, alpha)
from the string.
Implementation
static Color? tryFromRgbaString(String colorString) {
final reg = RegExp(r'rgba\((\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)');
final match = reg.firstMatch(colorString);
if (match == null) {
return null;
}
if (match.groupCount < 4) {
return null;
}
final redStr = match.group(1);
final greenStr = match.group(2);
final blueStr = match.group(3);
final alphaStr = match.group(4);
final red = redStr != null ? int.tryParse(redStr) : null;
final green = greenStr != null ? int.tryParse(greenStr) : null;
final blue = blueStr != null ? int.tryParse(blueStr) : null;
final alpha = alphaStr != null ? int.tryParse(alphaStr) : null;
if (red == null || green == null || blue == null || alpha == null) {
return null;
}
return Color.fromARGB(alpha, red, green, blue);
}