From 1b105d70e41137a87ae65ad45dae435dca2ffa81 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8E=8B=E5=8A=B2=E9=B9=8F?= <jingpeng.wang@outlook.com>
Date: Tue, 13 Jun 2023 20:36:55 +0800
Subject: [PATCH] iOS: add enable gallery

---
 .../Pod/Classes/Shader/DoricSliderLayout.h    |  1 +
 .../Pod/Classes/Shader/DoricSliderLayout.m    | 50 ++++++++++---------
 .../Pod/Classes/Shader/DoricSliderNode.m      |  1 +
 3 files changed, 29 insertions(+), 23 deletions(-)

diff --git a/doric-iOS/Pod/Classes/Shader/DoricSliderLayout.h b/doric-iOS/Pod/Classes/Shader/DoricSliderLayout.h
index a9c39964..93a14d49 100644
--- a/doric-iOS/Pod/Classes/Shader/DoricSliderLayout.h
+++ b/doric-iOS/Pod/Classes/Shader/DoricSliderLayout.h
@@ -25,5 +25,6 @@
 @property(nonatomic, assign) CGFloat galleryItemWidth;
 @property(nonatomic, assign) CGFloat galleryMinScale;
 @property(nonatomic, assign) CGFloat galleryMinAlpha;
+@property(nonatomic, assign) BOOL enableGallery;
 @end
 
diff --git a/doric-iOS/Pod/Classes/Shader/DoricSliderLayout.m b/doric-iOS/Pod/Classes/Shader/DoricSliderLayout.m
index 1d685ea4..1332cc81 100644
--- a/doric-iOS/Pod/Classes/Shader/DoricSliderLayout.m
+++ b/doric-iOS/Pod/Classes/Shader/DoricSliderLayout.m
@@ -24,32 +24,36 @@
 @implementation DoricSliderLayout
 
 - (NSArray<UICollectionViewLayoutAttributes *> *)layoutAttributesForElementsInRect:(CGRect)rect {
-    NSArray *attributes = [super layoutAttributesForElementsInRect:rect];
-    CGRect visitRect = {self.collectionView.contentOffset,self.collectionView.bounds.size};
-    NSMutableArray *attributesCopy = [NSMutableArray array];
-    for (UICollectionViewLayoutAttributes *attribute in attributes) {
-        UICollectionViewLayoutAttributes *attributeCopy = [attribute copy];
-        [attributesCopy addObject:attributeCopy];
-    }
-    
-    for (UICollectionViewLayoutAttributes *attribute in attributesCopy) {
-        CGFloat distance = CGRectGetMidX(visitRect) - attribute.center.x;
-        float diff = fabs(distance);
-        CATransform3D scaleTransform = CATransform3DIdentity;
-        
-        if (diff >= 0 && diff <= self.galleryItemWidth) {
-            float scale = 1 - (1 - self.galleryMinScale) * (diff / self.galleryItemWidth);
-            scaleTransform = CATransform3DMakeScale(scale, scale, scale);
-            attribute.alpha = 1 - (1 - self.galleryMinAlpha) * (diff / self.galleryItemWidth);
-        } else {
-            float scale = self.galleryMinScale;
-            scaleTransform = CATransform3DMakeScale(scale, scale, scale);
-            attribute.alpha = self.galleryMinAlpha;
+    if (self.enableGallery) {
+        NSArray *attributes = [super layoutAttributesForElementsInRect:rect];
+        CGRect visitRect = {self.collectionView.contentOffset, self.collectionView.bounds.size};
+        NSMutableArray *attributesCopy = [NSMutableArray array];
+        for (UICollectionViewLayoutAttributes *attribute in attributes) {
+            UICollectionViewLayoutAttributes *attributeCopy = [attribute copy];
+            [attributesCopy addObject:attributeCopy];
         }
         
-        attribute.transform3D = scaleTransform;
+        for (UICollectionViewLayoutAttributes *attribute in attributesCopy) {
+            CGFloat distance = CGRectGetMidX(visitRect) - attribute.center.x;
+            float diff = fabs(distance);
+            CATransform3D scaleTransform = CATransform3DIdentity;
+            
+            if (diff >= 0 && diff <= self.galleryItemWidth) {
+                float scale = 1 - (1 - self.galleryMinScale) * (diff / self.galleryItemWidth);
+                scaleTransform = CATransform3DMakeScale(scale, scale, scale);
+                attribute.alpha = 1 - (1 - self.galleryMinAlpha) * (diff / self.galleryItemWidth);
+            } else {
+                float scale = self.galleryMinScale;
+                scaleTransform = CATransform3DMakeScale(scale, scale, scale);
+                attribute.alpha = self.galleryMinAlpha;
+            }
+            
+            attribute.transform3D = scaleTransform;
+        }
+        return attributesCopy;
+    } else {
+        return [super layoutAttributesForElementsInRect:rect];
     }
-    return attributesCopy;
 }
 
 - (BOOL)shouldInvalidateLayoutForBoundsChange:(CGRect)newBounds {
diff --git a/doric-iOS/Pod/Classes/Shader/DoricSliderNode.m b/doric-iOS/Pod/Classes/Shader/DoricSliderNode.m
index f464bda4..63151c05 100644
--- a/doric-iOS/Pod/Classes/Shader/DoricSliderNode.m
+++ b/doric-iOS/Pod/Classes/Shader/DoricSliderNode.m
@@ -131,6 +131,7 @@ - (void)blendView:(UICollectionView *)view forPropName:(NSString *)name propValu
                 layout.galleryItemWidth = self.galleryItemWidth;
                 layout.galleryMinScale = self.galleryMinScale;
                 layout.galleryMinAlpha = self.galleryMinAlpha;
+                layout.enableGallery = YES;
             }
             
         } else if ([prop isKindOfClass:NSString.class]) {