diff options
Diffstat (limited to 'modules/mono/glue')
| -rw-r--r-- | modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs | 133 |
1 files changed, 55 insertions, 78 deletions
diff --git a/modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs b/modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs index d851abc6d3..3700a6194f 100644 --- a/modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs +++ b/modules/mono/glue/GodotSharp/GodotSharp/Core/Color.cs @@ -565,6 +565,9 @@ namespace Godot rgba = rgba.Substring(1); } + // If enabled, use 1 hex digit per channel instead of 2. + // Other sizes aren't in the HTML/CSS spec but we could add them if desired. + bool isShorthand = rgba.Length < 5; bool alpha; if (rgba.Length == 8) @@ -575,47 +578,60 @@ namespace Godot { alpha = false; } + else if (rgba.Length == 4) + { + alpha = true; + } + else if (rgba.Length == 3) + { + alpha = false; + } else { throw new ArgumentOutOfRangeException("Invalid color code. Length is " + rgba.Length + " but a length of 6 or 8 is expected: " + rgba); } - if (alpha) + a = 1.0f; + if (isShorthand) { - a = ParseCol8(rgba, 6) / 255f; - - if (a < 0) + r = ParseCol4(rgba, 0) / 15f; + g = ParseCol4(rgba, 1) / 15f; + b = ParseCol4(rgba, 2) / 15f; + if (alpha) { - throw new ArgumentOutOfRangeException("Invalid color code. Alpha part is not valid hexadecimal: " + rgba); + a = ParseCol4(rgba, 3) / 15f; } } else { - a = 1.0f; + r = ParseCol8(rgba, 0) / 255f; + g = ParseCol8(rgba, 2) / 255f; + b = ParseCol8(rgba, 4) / 255f; + if (alpha) + { + a = ParseCol8(rgba, 6) / 255f; + } } - int from = alpha ? 2 : 0; - - r = ParseCol8(rgba, 0) / 255f; - if (r < 0) { throw new ArgumentOutOfRangeException("Invalid color code. Red part is not valid hexadecimal: " + rgba); } - g = ParseCol8(rgba, 2) / 255f; - if (g < 0) { throw new ArgumentOutOfRangeException("Invalid color code. Green part is not valid hexadecimal: " + rgba); } - b = ParseCol8(rgba, 4) / 255f; - if (b < 0) { throw new ArgumentOutOfRangeException("Invalid color code. Blue part is not valid hexadecimal: " + rgba); } + + if (a < 0) + { + throw new ArgumentOutOfRangeException("Invalid color code. Alpha part is not valid hexadecimal: " + rgba); + } } /// <summary> @@ -751,45 +767,28 @@ namespace Godot value = max; } - private static int ParseCol8(string str, int ofs) + private static int ParseCol4(string str, int ofs) { - int ig = 0; + char character = str[ofs]; - for (int i = 0; i < 2; i++) + if (character >= '0' && character <= '9') { - int c = str[i + ofs]; - int v; - - if (c >= '0' && c <= '9') - { - v = c - '0'; - } - else if (c >= 'a' && c <= 'f') - { - v = c - 'a'; - v += 10; - } - else if (c >= 'A' && c <= 'F') - { - v = c - 'A'; - v += 10; - } - else - { - return -1; - } - - if (i == 0) - { - ig += v * 16; - } - else - { - ig += v; - } + return character - '0'; + } + else if (character >= 'a' && character <= 'f') + { + return character + (10 - 'a'); } + else if (character >= 'A' && character <= 'F') + { + return character + (10 - 'A'); + } + return -1; + } - return ig; + private static int ParseCol8(string str, int ofs) + { + return ParseCol4(str, ofs) * 16 + ParseCol4(str, ofs + 1); } private String ToHex32(float val) @@ -828,46 +827,24 @@ namespace Godot if (color[0] == '#') { - color = color.Substring(1, color.Length - 1); + color = color.Substring(1); } - bool alpha; - - switch (color.Length) + // Check if the amount of hex digits is valid. + int len = color.Length; + if (!(len == 3 || len == 4 || len == 6 || len == 8)) { - case 8: - alpha = true; - break; - case 6: - alpha = false; - break; - default: - return false; + return false; } - if (alpha) - { - if (ParseCol8(color, 0) < 0) + // Check if each hex digit is valid. + for (int i = 0; i < len; i++) { + if (ParseCol4(color, i) == -1) { return false; } } - int from = alpha ? 2 : 0; - - if (ParseCol8(color, from + 0) < 0) - { - return false; - } - if (ParseCol8(color, from + 2) < 0) - { - return false; - } - if (ParseCol8(color, from + 4) < 0) - { - return false; - } - return true; } |