| 33 | } |
| 34 | |
| 35 | Color Color::FromHex(const String& hex, bool& isValid) |
| 36 | { |
| 37 | int32 r, g, b, a = 255; |
| 38 | isValid = true; |
| 39 | int32 startIndex = !hex.IsEmpty() && hex[0] == Char('#') ? 1 : 0; |
| 40 | if (hex.Length() == 3 + startIndex) |
| 41 | { |
| 42 | r = StringUtils::HexDigit(hex[startIndex++]); |
| 43 | g = StringUtils::HexDigit(hex[startIndex++]); |
| 44 | b = StringUtils::HexDigit(hex[startIndex]); |
| 45 | |
| 46 | r = (r << 4) + r; |
| 47 | g = (g << 4) + g; |
| 48 | b = (b << 4) + b; |
| 49 | } |
| 50 | else if (hex.Length() == 6 + startIndex) |
| 51 | { |
| 52 | r = (StringUtils::HexDigit(hex[startIndex + 0]) << 4) + StringUtils::HexDigit(hex[startIndex + 1]); |
| 53 | g = (StringUtils::HexDigit(hex[startIndex + 2]) << 4) + StringUtils::HexDigit(hex[startIndex + 3]); |
| 54 | b = (StringUtils::HexDigit(hex[startIndex + 4]) << 4) + StringUtils::HexDigit(hex[startIndex + 5]); |
| 55 | } |
| 56 | else if (hex.Length() == 8 + startIndex) |
| 57 | { |
| 58 | r = (StringUtils::HexDigit(hex[startIndex + 0]) << 4) + StringUtils::HexDigit(hex[startIndex + 1]); |
| 59 | g = (StringUtils::HexDigit(hex[startIndex + 2]) << 4) + StringUtils::HexDigit(hex[startIndex + 3]); |
| 60 | b = (StringUtils::HexDigit(hex[startIndex + 4]) << 4) + StringUtils::HexDigit(hex[startIndex + 5]); |
| 61 | a = (StringUtils::HexDigit(hex[startIndex + 6]) << 4) + StringUtils::HexDigit(hex[startIndex + 7]); |
| 62 | } |
| 63 | else |
| 64 | { |
| 65 | r = g = b = 0; |
| 66 | isValid = false; |
| 67 | } |
| 68 | return FromBytes(r, g, b, a); |
| 69 | } |
| 70 | |
| 71 | Color Color::FromHSV(float hue, float saturation, float value, float alpha) |
| 72 | { |