makepad_live_tokenizer/
vec4_ext.rs

1
2use makepad_math::Vec4;
3use crate::colorhex;
4
5pub trait Vec4Ext{
6    fn from_hex_str(hex: &str) -> Result<Vec4, ()> {Self::from_hex_bytes(hex.as_bytes())}
7    fn from_hex_bytes(bytes: &[u8]) -> Result<Vec4, ()>;
8    fn append_hex_to_string(&self, out:&mut String);
9    fn color(value: &str) -> Vec4;
10}
11
12impl Vec4Ext for Vec4{
13    fn append_hex_to_string(&self, out:&mut String) {
14        fn int_to_hex(d: u8) -> char {
15            if d >= 10 {
16                return (d + 55) as char;
17            }
18            (d + 48) as char
19        }
20        
21        let r = (self.x * 255.0) as u8;
22        let g = (self.y * 255.0) as u8;
23        let b = (self.z * 255.0) as u8;
24        out.push(int_to_hex((r >> 4) & 0xf));
25        out.push(int_to_hex((r) & 0xf));
26        out.push(int_to_hex((g >> 4) & 0xf));
27        out.push(int_to_hex((g) & 0xf));
28        out.push(int_to_hex((b >> 4) & 0xf));
29        out.push(int_to_hex((b) & 0xf));
30    }
31    
32    fn color(value: &str) -> Vec4 {
33        if let Ok(val) = Self::from_hex_str(value) {
34            val
35        }
36        else {
37            Vec4 {x: 1.0, y: 0.0, z: 1.0, w: 1.0}
38        }
39    }
40    
41    fn from_hex_bytes(bytes: &[u8]) -> Result<Vec4, ()> {
42        let color = if bytes.len()>2 && bytes[0] == b'#' {
43            colorhex::hex_bytes_to_u32(&bytes[1..])?
44        }
45        else {
46            colorhex::hex_bytes_to_u32(bytes)?
47        };
48        Ok(Vec4 {
49            x: (((color >> 24)&0xff) as f32) / 255.0,
50            y: (((color >> 16)&0xff) as f32) / 255.0,
51            z: (((color >> 8)&0xff) as f32) / 255.0,
52            w: ((color&0xff) as f32) / 255.0,
53        })
54    }
55}
makepad_live_tokenizer/vec4_ext.rs

makepad_live_tokenizer/
vec4_ext.rs
