diff options
Diffstat (limited to '')
| -rw-r--r-- | material_theme/src/utils.rs | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/material_theme/src/utils.rs b/material_theme/src/utils.rs index 7efec9b..a05bc62 100644 --- a/material_theme/src/utils.rs +++ b/material_theme/src/utils.rs @@ -28,6 +28,44 @@ pub fn shadow_from_elevation(elevation: f32, color: Color) -> Shadow { } } +pub fn parse_argb(s: &str) -> Option<Color> { + let hex = s.strip_prefix('#').unwrap_or(s); + + let parse_channel = |from: usize, to: usize| { + let num = + usize::from_str_radix(&hex[from..=to], 16).ok()? as f32 / 255.0; + + // If we only got half a byte (one letter), expand it into a full byte (two letters) + Some(if from == to { num + num * 16.0 } else { num }) + }; + + Some(match hex.len() { + 3 => Color::from_rgb( + parse_channel(0, 0)?, + parse_channel(1, 1)?, + parse_channel(2, 2)?, + ), + 4 => Color::from_rgba( + parse_channel(1, 1)?, + parse_channel(2, 2)?, + parse_channel(3, 3)?, + parse_channel(0, 0)?, + ), + 6 => Color::from_rgb( + parse_channel(0, 1)?, + parse_channel(2, 3)?, + parse_channel(4, 5)?, + ), + 8 => Color::from_rgba( + parse_channel(2, 3)?, + parse_channel(4, 5)?, + parse_channel(6, 7)?, + parse_channel(0, 1)?, + ), + _ => None?, + }) +} + pub fn mix(color1: Color, color2: Color, p2: f32) -> Color { if p2 <= 0.0 { return color1; |