diff --git a/doric-Qt/doric/doric.pro.user b/doric-Qt/doric/doric.pro.user
index 58a534bc..ec9f62ef 100644
--- a/doric-Qt/doric/doric.pro.user
+++ b/doric-Qt/doric/doric.pro.user
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 4.14.1, 2021-04-01T16:59:16. -->
+<!-- Written by QtCreator 4.14.2, 2021-04-06T10:55:52. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>
@@ -88,16 +88,16 @@
   <variable>ProjectExplorer.Project.Target.0</variable>
   <valuemap type="QVariantMap">
    <value type="QString" key="DeviceType">Desktop</value>
-   <value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">Desktop Qt 6.0.2 MSVC2019 64bit</value>
-   <value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">Desktop Qt 6.0.2 MSVC2019 64bit</value>
-   <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">qt.qt6.602.win64_msvc2019_64_kit</value>
+   <value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">Desktop Qt 6.0.3 MSVC2019 64bit</value>
+   <value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">Desktop Qt 6.0.3 MSVC2019 64bit</value>
+   <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">qt.qt6.603.win64_msvc2019_64_kit</value>
    <value type="int" key="ProjectExplorer.Target.ActiveBuildConfiguration">0</value>
    <value type="int" key="ProjectExplorer.Target.ActiveDeployConfiguration">0</value>
    <value type="int" key="ProjectExplorer.Target.ActiveRunConfiguration">0</value>
    <valuemap type="QVariantMap" key="ProjectExplorer.Target.BuildConfiguration.0">
     <value type="int" key="EnableQmlDebugging">0</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_2_MSVC2019_64bit-Debug</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_2_MSVC2019_64bit-Debug</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_3_MSVC2019_64bit-Debug</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_3_MSVC2019_64bit-Debug</value>
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
@@ -136,8 +136,8 @@
     <value type="int" key="RunSystemFunction">0</value>
    </valuemap>
    <valuemap type="QVariantMap" key="ProjectExplorer.Target.BuildConfiguration.1">
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_2_MSVC2019_64bit-Release</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_2_MSVC2019_64bit-Release</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_3_MSVC2019_64bit-Release</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_3_MSVC2019_64bit-Release</value>
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
@@ -178,8 +178,8 @@
    </valuemap>
    <valuemap type="QVariantMap" key="ProjectExplorer.Target.BuildConfiguration.2">
     <value type="int" key="EnableQmlDebugging">0</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_2_MSVC2019_64bit-Profile</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_2_MSVC2019_64bit-Profile</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_3_MSVC2019_64bit-Profile</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_3_MSVC2019_64bit-Profile</value>
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
@@ -301,7 +301,7 @@
     <value type="bool" key="RunConfiguration.UseLibrarySearchPath">true</value>
     <value type="bool" key="RunConfiguration.UseQmlDebugger">false</value>
     <value type="bool" key="RunConfiguration.UseQmlDebuggerAuto">true</value>
-    <value type="QString" key="RunConfiguration.WorkingDirectory.default">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_2_MSVC2019_64bit-Debug</value>
+    <value type="QString" key="RunConfiguration.WorkingDirectory.default">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_3_MSVC2019_64bit-Debug</value>
    </valuemap>
    <value type="int" key="ProjectExplorer.Target.RunConfigurationCount">1</value>
   </valuemap>
@@ -310,16 +310,16 @@
   <variable>ProjectExplorer.Project.Target.1</variable>
   <valuemap type="QVariantMap">
    <value type="QString" key="DeviceType">Desktop</value>
-   <value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">Desktop Qt 6.0.1 MinGW 64-bit</value>
-   <value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">Desktop Qt 6.0.1 MinGW 64-bit</value>
-   <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">qt.qt6.601.win64_mingw81_kit</value>
+   <value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">Desktop Qt 6.0.3 MinGW 64-bit</value>
+   <value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName">Desktop Qt 6.0.3 MinGW 64-bit</value>
+   <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">qt.qt6.603.win64_mingw81_kit</value>
    <value type="int" key="ProjectExplorer.Target.ActiveBuildConfiguration">0</value>
    <value type="int" key="ProjectExplorer.Target.ActiveDeployConfiguration">0</value>
    <value type="int" key="ProjectExplorer.Target.ActiveRunConfiguration">0</value>
    <valuemap type="QVariantMap" key="ProjectExplorer.Target.BuildConfiguration.0">
     <value type="int" key="EnableQmlDebugging">0</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_1_MinGW_64_bit-Debug</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_1_MinGW_64_bit-Debug</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_3_MinGW_64_bit-Debug</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_3_MinGW_64_bit-Debug</value>
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
@@ -358,8 +358,8 @@
     <value type="int" key="RunSystemFunction">0</value>
    </valuemap>
    <valuemap type="QVariantMap" key="ProjectExplorer.Target.BuildConfiguration.1">
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_1_MinGW_64_bit-Release</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_1_MinGW_64_bit-Release</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_3_MinGW_64_bit-Release</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_3_MinGW_64_bit-Release</value>
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
@@ -400,8 +400,8 @@
    </valuemap>
    <valuemap type="QVariantMap" key="ProjectExplorer.Target.BuildConfiguration.2">
     <value type="int" key="EnableQmlDebugging">0</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_1_MinGW_64_bit-Profile</value>
-    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_1_MinGW_64_bit-Profile</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory">C:\Users\maverick\Workspace\Doric\doric-Qt\build-doric-Desktop_Qt_6_0_3_MinGW_64_bit-Profile</value>
+    <value type="QString" key="ProjectExplorer.BuildConfiguration.BuildDirectory.shadowDir">C:/Users/maverick/Workspace/Doric/doric-Qt/build-doric-Desktop_Qt_6_0_3_MinGW_64_bit-Profile</value>
     <valuemap type="QVariantMap" key="ProjectExplorer.BuildConfiguration.BuildStepList.0">
      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.0">
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
@@ -516,11 +516,10 @@
     <valuelist type="QVariantList" key="CustomOutputParsers"/>
     <value type="int" key="PE.EnvironmentAspect.Base">2</value>
     <valuelist type="QVariantList" key="PE.EnvironmentAspect.Changes"/>
-    <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">Qt4ProjectManager.Qt4RunConfiguration:C:/Users/maverick/Workspace/Doric/doric-Qt/doric/doric.pro</value>
-    <value type="QString" key="ProjectExplorer.RunConfiguration.BuildKey">C:/Users/maverick/Workspace/Doric/doric-Qt/doric/doric.pro</value>
+    <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.CustomExecutableRunConfiguration</value>
+    <value type="QString" key="ProjectExplorer.RunConfiguration.BuildKey"></value>
     <value type="bool" key="RunConfiguration.UseCppDebugger">false</value>
     <value type="bool" key="RunConfiguration.UseCppDebuggerAuto">true</value>
-    <value type="bool" key="RunConfiguration.UseLibrarySearchPath">true</value>
     <value type="bool" key="RunConfiguration.UseQmlDebugger">false</value>
     <value type="bool" key="RunConfiguration.UseQmlDebuggerAuto">true</value>
    </valuemap>
diff --git a/doric-Qt/doric/shader/DoricSuperNode.cpp b/doric-Qt/doric/shader/DoricSuperNode.cpp
index f23192da..87fb3190 100644
--- a/doric-Qt/doric/shader/DoricSuperNode.cpp
+++ b/doric-Qt/doric/shader/DoricSuperNode.cpp
@@ -57,7 +57,7 @@ void DoricSuperNode::blendSubLayoutConfig(DoricViewNode *viewNode,
 
 QJsonValue DoricSuperNode::generateDefaultLayoutConfig() {
   QJsonObject layoutConfig;
-  layoutConfig.insert("widthSpec", 0);
-  layoutConfig.insert("heightSpec", 0);
+  layoutConfig.insert("widthSpec", SpecMode::JUST);
+  layoutConfig.insert("heightSpec", SpecMode::JUST);
   return layoutConfig;
 }
diff --git a/doric-Qt/doric/shader/DoricViewNode.cpp b/doric-Qt/doric/shader/DoricViewNode.cpp
index 5527d3b8..4d965a17 100644
--- a/doric-Qt/doric/shader/DoricViewNode.cpp
+++ b/doric-Qt/doric/shader/DoricViewNode.cpp
@@ -12,28 +12,28 @@ void DoricViewNode::blendLayoutConfig(QJsonValue jsObject) {
 
   if (widthSpec.isDouble()) {
     switch (widthSpec.toInt()) {
-    case 0:
-      mView->setProperty("widthSpec", 0);
+    case SpecMode::JUST:
+      mView->setProperty("widthSpec", SpecMode::JUST);
       break;
-    case 1:
-      mView->setProperty("widthSpec", 1);
+    case SpecMode::FIT:
+      mView->setProperty("widthSpec", SpecMode::FIT);
       break;
-    case 2:
-      mView->setProperty("widthSpec", 2);
+    case SpecMode::MOST:
+      mView->setProperty("widthSpec", SpecMode::MOST);
       break;
     }
   }
 
   if (heightSpec.isDouble()) {
     switch (heightSpec.toInt()) {
-    case 0:
-      mView->setProperty("heightSpec", 0);
+    case SpecMode::JUST:
+      mView->setProperty("heightSpec", SpecMode::JUST);
       break;
-    case 1:
-      mView->setProperty("heightSpec", 1);
+    case SpecMode::FIT:
+      mView->setProperty("heightSpec", SpecMode::FIT);
       break;
-    case 2:
-      mView->setProperty("heightSpec", 2);
+    case SpecMode::MOST:
+      mView->setProperty("heightSpec", SpecMode::MOST);
       break;
     }
   }
@@ -87,7 +87,7 @@ void DoricViewNode::blend(QQuickItem *view, QString name, QJsonValue prop) {
     } else {
       QJsonValue widthSpec = this->mLayoutConfig["widthSpec"];
       if (widthSpec.isDouble()) {
-        if (widthSpec.toInt() == 0) {
+        if (widthSpec.toInt() == SpecMode::JUST) {
           view->setWidth(prop.toInt());
         }
       }
@@ -101,7 +101,7 @@ void DoricViewNode::blend(QQuickItem *view, QString name, QJsonValue prop) {
     } else {
       QJsonValue heightSpec = this->mLayoutConfig["heightSpec"];
       if (heightSpec.isDouble()) {
-        if (heightSpec.toInt() == 0) {
+        if (heightSpec.toInt() == SpecMode::JUST) {
           view->setHeight(prop.toInt());
         }
       }
diff --git a/doric-Qt/doric/shader/DoricViewNode.h b/doric-Qt/doric/shader/DoricViewNode.h
index f2c2fae8..5ebcc17e 100644
--- a/doric-Qt/doric/shader/DoricViewNode.h
+++ b/doric-Qt/doric/shader/DoricViewNode.h
@@ -1,12 +1,19 @@
 #ifndef DORICVIEWNODE_H
 #define DORICVIEWNODE_H
 
-#include <QQuickItem>
-#include <QJsonValue>
 #include <QJsonObject>
+#include <QJsonValue>
+#include <QQuickItem>
 
 #include "../utils/DoricContextHolder.h"
 
+class SpecMode {
+public:
+  const static int JUST = 0;
+  const static int FIT = 1;
+  const static int MOST = 2;
+};
+
 class DoricSuperNode;
 
 class DoricViewNode : public DoricContextHolder {