waterui-graphics 0.2.1

Graphic components for WaterUI
Documentation 
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//! Type conversions between WaterUI and vello (kurbo/peniko) types.
//!
//! These conversions are internal to the graphics module and allow the Canvas API
//! to use WaterUI's native types while rendering with vello's kurbo/peniko types.

use waterui_color::ResolvedColor;
use waterui_core::layout::{Point, Rect, Size};

// Internal imports for rendering (not exposed to users)
use vello::{kurbo, peniko};

// ============================================================================
// Point conversions
// ============================================================================

#[inline]
pub fn point_to_kurbo(p: Point) -> kurbo::Point {
    kurbo::Point::new(f64::from(p.x), f64::from(p.y))
}

// ============================================================================
// Size conversions
// ============================================================================

#[inline]
pub fn size_to_kurbo(s: Size) -> kurbo::Size {
    kurbo::Size::new(f64::from(s.width), f64::from(s.height))
}

// ============================================================================
// Rect conversions
// ============================================================================

#[inline]
pub fn rect_to_kurbo(r: Rect) -> kurbo::Rect {
    let origin = point_to_kurbo(r.origin());
    let size = size_to_kurbo(*r.size());
    kurbo::Rect::from_origin_size(origin, size)
}

// ============================================================================
// Color conversions
// ============================================================================

#[inline]
#[allow(clippy::cast_possible_truncation)]
#[allow(clippy::cast_sign_loss)]
pub fn resolved_color_to_peniko(c: ResolvedColor) -> peniko::Color {
    // WaterUI ResolvedColor uses linear RGB with headroom
    // peniko::Color expects RGBA in [0, 1] range
    // Apply headroom to support HDR colors
    let scale = 1.0 + c.headroom;
    peniko::Color::from_rgba8(
        (c.red * scale * 255.0) as u8,
        (c.green * scale * 255.0) as u8,
        (c.blue * scale * 255.0) as u8,
        (c.opacity * 255.0) as u8,
    )
}