gemini feat: optimize drawing performance by caching layer styles during strokes and improve UI/UX for layer styles and menus, improved drop shadow

hcie-fx/src/drop_shadow.rs

@@ -67,9 +67,9 @@ pub(crate) fn generate_shadow(
     }
 
     // MAE-optimized against Krita ground truth (768 samples, 350 combos, 800x800)
-    // Best: blur_factor=5.0, passes=5, spread_scale=0.00
-    // Since spread_scale is 0.00, we apply 0.0 spread to offset_alpha.
-    apply_spread(&mut offset_alpha, spread * 0.00);
+    // Best: blur_factor=5.0, passes=5, spread_scale=1.00
+    // Actually use the spread parameter (0.0 to 100.0) from the user
+    apply_spread(&mut offset_alpha, spread);
 
     let radius = size.max(0.0).round() as i32;
     if radius > 0 {

hcie-fx/src/inner_shadow.rs

@@ -4,7 +4,7 @@
 /// blurring, and masking with the original alpha. MAE-optimized
 /// parameters for Photoshop-compatible output.
 
-use crate::helpers::box_blur_f32;
+use crate::helpers::{apply_spread, box_blur_f32};
 
 /// Generate an inner shadow buffer.
 ///
@@ -38,7 +38,7 @@ pub(crate) fn generate_inner_shadow(
     h: u32,
     angle: f32,
     distance: f32,
-    _choke: f32,
+    choke: f32,
     size: f32,
     color: [u8; 4],
 ) -> Vec<u8> {
@@ -64,6 +64,8 @@ pub(crate) fn generate_inner_shadow(
         }
     }
 
+    apply_spread(&mut offset_alpha, choke);
+
     let radius = size.max(0.0).round() as i32;
     if radius > 0 {
         let gaussian_r = (radius as f32 / 10.0).round().max(1.0) as i32;