iOS render

iOS/Pod/Classes/Shader/DoricHLayoutNode.m

@@ -8,5 +8,39 @@
 #import "DoricHLayoutNode.h"
 
 @implementation DoricHLayoutNode
+- (instancetype)init {
+    if (self = [super init]) {
+        _space = 0;
+        _gravity = 0;
+    }
+    return self;
+}
+
+- (void)measureByParent:(DoricGroupNode *)parent {
+    DoricLayoutDesc widthSpec = self.layoutParams.width;
+    DoricLayoutDesc heightSpec = self.layoutParams.height;
+    CGFloat maxWidth = 0,maxHeight = 0;
+    for (DoricViewNode *child in self.indexedChildren) {
+        [child measureByParent:self];
+        UIView *childView = child.view;
+        CGFloat placeWidth = childView.width + child.layoutParams.margin.left + child.layoutParams.margin.right;
+        CGFloat placeHeight = childView.height + child.layoutParams.margin.top + child.layoutParams.margin.bottom;
+        maxWidth += placeWidth + self.space;
+        maxHeight = MAX(maxHeight, placeHeight);
+    }
+    
+    maxWidth -= self.space;
+    
+    self.desiredWidth = maxWidth;
+    self.desiredHeight = maxHeight;
+    
+    if (widthSpec == LAYOUT_WRAP_CONTENT) {
+        self.view.width = maxWidth;
+    }
+    
+    if (heightSpec == LAYOUT_WRAP_CONTENT) {
+        self.view.height = maxHeight;
+    }
+}
 
 @end