iOS:fix cannot change rootView's layoutconfig or size

doric-iOS/Pod/Classes/DoricPanel.m

@@ -20,11 +20,19 @@
 #import "DoricPanel.h"
 #import "Doric.h"
 
+@interface DoricPanel()
+@property(nonatomic,assign) CGFloat renderedWidth;
+@property(nonatomic,assign) CGFloat renderedHeight;
+@end
+
 @implementation DoricPanel
 
 - (void)config:(NSString *)script alias:(NSString *)alias extra:(NSString *)extra {
     self.doricContext = [[[DoricContext alloc] initWithScript:script source:alias extra:extra] also:^(DoricContext *it) {
         [it.rootNode setupRootView:[[DoricStackView new] also:^(DoricStackView *it) {
+            it.width = self.view.width;
+            it.height = self.view.height;
+            it.clipsToBounds = YES;
             [self.view addSubview:it];
         }]];
     }];
@@ -34,10 +42,10 @@ - (void)config:(NSString *)script alias:(NSString *)alias extra:(NSString *)extr
 - (void)viewWillLayoutSubviews {
     [super viewWillLayoutSubviews];
     [self.doricContext.rootNode.view also:^(DoricStackView *it) {
-        if (it.width != self.view.width || it.height != self.view.height) {
+        if (it.width != self.renderedWidth || it.height != self.renderedHeight) {
-            it.width = self.view.width;
-            it.height = self.view.height;
             [self.doricContext initContextWithWidth:it.width height:it.height];
+            self.renderedWidth = it.width;
+            self.renderedHeight = it.height;
         }
     }];
 }

doric-iOS/Pod/Classes/Shader/DoricLayouts.m

@@ -125,7 +125,8 @@ - (void)doricLayoutSubviews {
     if ([self.superview requestFromSubview:self]) {
         [self.superview doricLayoutSubviews];
     } else {
-        [self layoutSelf:CGSizeMake(self.width, self.height)];
+        CGSize size = [self measureSize:CGSizeMake(self.superview.width, self.superview.height)];
+        [self layoutSelf:size];
     }
 }
 

doric-iOS/Pod/Classes/Shader/DoricViewNode.m

@@ -378,6 +378,9 @@ - (NSDictionary *)getLocationOnScreen {
 }
 
 - (void)blendLayoutConfig:(NSDictionary *)params {
+    if (!self.layoutConfig) {
+        self.view.layoutConfig = [DoricLayoutConfig new];
+    }
     [params[@"widthSpec"] also:^(NSNumber *it) {
         if (it) {
             self.layoutConfig.widthSpec = (DoricLayoutSpec) [it integerValue];