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Make shadow optional in renderer::Quad

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Héctor Ramón Jiménez 2024-01-20 12:11:18 +01:00
parent 83902921a3
commit b7b457a575
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GPG key ID: 7CC46565708259A7
8 changed files with 57 additions and 46 deletions
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24
tiny_skia/src/backend.rs
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@ -155,9 +155,7 @@ impl Backend {
border_radius,
border_width,
border_color,
shadow_color,
shadow_offset,
shadow_blur_radius,
shadow,
} => {
let physical_bounds = (*bounds + translation) * scale_factor;
@ -187,7 +185,7 @@ impl Backend {
}
let path = rounded_rectangle(*bounds, fill_border_radius);
if shadow_color.a > 0.0 {
if let Some(shadow) = shadow {
fn smoothstep(a: f32, b: f32, x: f32) -> f32 {
let x = ((x - a) / (b - a)).clamp(0.0, 1.0);
@ -216,10 +214,10 @@ impl Backend {
}
let shadow_bounds = (Rectangle {
x: bounds.x + shadow_offset.x - shadow_blur_radius,
y: bounds.y + shadow_offset.y - shadow_blur_radius,
width: bounds.width + shadow_blur_radius * 2.0,
height: bounds.height + shadow_blur_radius * 2.0,
x: bounds.x + shadow.offset.x - shadow.blur_radius,
y: bounds.y + shadow.offset.y - shadow.blur_radius,
width: bounds.width + shadow.blur_radius * 2.0,
height: bounds.height + shadow.blur_radius * 2.0,
} + translation)
* scale_factor;
@ -245,10 +243,10 @@ impl Backend {
let shadow_distance = rounded_box_sdf(
Vector::new(
x - physical_bounds.position().x
- (shadow_offset.x * scale_factor)
- (shadow.offset.x * scale_factor)
- half_width,
y - physical_bounds.position().y
- (shadow_offset.y * scale_factor)
- (shadow.offset.y * scale_factor)
- half_height,
),
size,
@ -256,12 +254,12 @@ impl Backend {
);
let shadow_alpha = 1.0
- smoothstep(
-shadow_blur_radius * scale_factor,
*shadow_blur_radius * scale_factor,
-shadow.blur_radius * scale_factor,
shadow.blur_radius * scale_factor,
shadow_distance,
);
let mut color = into_color(*shadow_color);
let mut color = into_color(shadow.color);
color.apply_opacity(shadow_alpha);
color.to_color_u8().premultiply()