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use crate::utils::parse_color;
/// 8x8 1-bit pattern data
/// 0 = foreground color, 1 = background color
pub const STITCH: [u8; 64] = [
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1,
];
pub const SHINGLES: [u8; 64] = [
1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0,
0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1,
];
pub const SHADOW_GRID: [u8; 64] = [
1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0,
0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0,
];
pub const WICKER: [u8; 64] = [
0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0,
0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0,
];
/// Creates a cairo surface pattern from pattern data
pub fn create_pattern(
pattern_data: &[u8; 64],
foreground: &str,
background: &str,
) -> Result<cairo::SurfacePattern, cairo::Error> {
let surface = cairo::ImageSurface::create(cairo::Format::Rgb24, 8, 8)?;
{
let ctx = cairo::Context::new(&surface)?;
let fg = parse_color(foreground);
let bg = parse_color(background);
for y in 0..8 {
for x in 0..8 {
let value = pattern_data[y * 8 + x];
let (r, g, b) = if value == 0 { fg } else { bg };
ctx.set_source_rgb(r, g, b);
ctx.rectangle(x as f64, y as f64, 1.0, 1.0);
ctx.fill()?;
}
}
}
let pattern = cairo::SurfacePattern::create(&surface);
pattern.set_extend(cairo::Extend::Repeat);
Ok(pattern)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_pattern_data_lengths() {
assert_eq!(STITCH.len(), 64);
assert_eq!(SHINGLES.len(), 64);
assert_eq!(SHADOW_GRID.len(), 64);
assert_eq!(WICKER.len(), 64);
}
#[test]
fn test_pattern_values() {
// All pattern values should be 0 or 1
for &val in &STITCH {
assert!(val == 0 || val == 1);
}
for &val in &SHINGLES {
assert!(val == 0 || val == 1);
}
}
}
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