feat: add drawAsOverlay flag to control stroke drawing order

Allows rendering the stroke before or after content. Useful for overlay effects or drawing boundaries on top of views.

Author: sonsation

library/src/main/java/com/sonsation/library/ShadowLayout.kt

@@ -122,6 +122,7 @@ class ShadowLayout : FrameLayout {
                     )
                 } ?: BlurMaskFilter.Blur.NORMAL
                 this.blur = a.getDimension(R.styleable.ShadowLayout_stroke_blur, 0f)
+                this.drawAsOverlay = a.getBoolean(R.styleable.ShadowLayout_stroke_draw_as_overlay, false)
             }
 
             val allRadius = a.getDimension(R.styleable.ShadowLayout_background_radius, 0f)
@@ -274,7 +275,20 @@ class ShadowLayout : FrameLayout {
         canvas.drawPath(backgroundPath, backgroundPaint)
 
         if (stroke?.isEnable == true) {
-            canvas.drawPath(outlinePath, outlinePaint)
+
+            if (stroke?.drawAsOverlay == true) {
+
+                if (clipOutLine) {
+                    canvas.clipPath(outlinePath)
+                }
+
+                super.dispatchDraw(canvas)
+
+                canvas.drawPath(outlinePath, outlinePaint)
+                return
+            } else {
+                canvas.drawPath(outlinePath, outlinePaint)
+            }
         }
 
         if (clipOutLine) {
@@ -603,6 +617,11 @@ class ShadowLayout : FrameLayout {
         invalidate()
     }
 
+    fun updateStrokeDrawAsOverlay(drawAsOverlay: Boolean) {
+        this.stroke?.drawAsOverlay = drawAsOverlay
+        invalidate()
+    }
+
     fun updateStrokeType(strokeType: StrokeType) {
         this.stroke?.strokeType = strokeType
         if (autoAdjustPadding) {

library/src/main/java/com/sonsation/library/effet/Stroke.kt

@@ -10,6 +10,7 @@ class Stroke(var strokeWidth: Float = 0f,
              var strokeType: StrokeType = StrokeType.INSIDE
     ) {
 
+    var drawAsOverlay = false
     var blur: Float = 0f
     var blurType = BlurMaskFilter.Blur.NORMAL
     val isEnable: Boolean

library/src/main/res/values/attrs.xml

@@ -44,6 +44,7 @@
             <enum name="CENTER" value="1"/>
             <enum name="OUTSIDE" value="2"/>
         </attr>
+        <attr name="stroke_draw_as_overlay" format="boolean"/>
 
         <attr name="shadow_color" format="color" />
         <attr name="shadow_offset_x" format="dimension" />