完成了两个Manager的构建逻辑

ArchitectureColoredPainting/src/Editor/EditorWidget.cpp

@@ -4,11 +4,9 @@ EditorWidget::EditorWidget(QWidget *parent) : QWidget(parent)
 {
     ui.setupUi(this);
     previewWindow = ui.Preview;
-    QJsonArray elements;
-    QJsonArray layers;
-    elementManager = new ElementManager(elements);
-    layerManager = new LayerManager(layers, elementManager);
-    elementManager->initialize(layerManager);
+    QJsonObject source;
+    elementManager = new ElementManager(source);
+    layerManager = new LayerManager(source, elementManager);
     previewWindow->initialize(layerManager);
 }
 

ArchitectureColoredPainting/src/Editor/ElementManager.cpp

@@ -1,11 +1,14 @@
 #include "ElementManager.h"
-ElementManager::ElementManager(QJsonArray jsonElementArray)
-{
-    elements.resize(jsonElementArray.size());
-}
-
-void ElementManager::initialize(LayerManager *layerManager)
+ElementManager::ElementManager(QJsonObject source)
 {
+    auto elementsJson = source.value("elements").toArray();
+    for (auto elementJson : elementsJson)
+    {
+        if (elementJson.toObject().value("type") == "group")
+            elements.push_back(new GroupElement());
+        else
+            elements.push_back(new SimpleElement(elementJson.toObject()));
+    }
 }
 
 void ElementManager::addElement(GraphicElement *element)
@@ -16,10 +19,14 @@ void ElementManager::removeElement(GraphicElement *pElement)
 {
 }
 
-GraphicElement **ElementManager::getElementById(int index)
+GraphicElement *ElementManager::getElementById(int index)
 {
-    if (index <= elements.size())
-        return &elements[index];
+    if (index < elements.size())
+        return elements[index];
     else
         return nullptr;
 }
+// TODO: undone
+ElementManager::~ElementManager()
+{
+}

ArchitectureColoredPainting/src/Editor/ElementManager.h

@@ -5,6 +5,7 @@
 #include <vector>
 using std::vector;
 class LayerManager;
+class GraphicElement;
 
 class ElementManager
 {
@@ -12,12 +13,12 @@ class ElementManager
     vector<GraphicElement *> elements;
 
   public:
-    ElementManager(QJsonArray jsonElementArray);
-    void initialize(LayerManager *layerManager);
+    ElementManager(QJsonObject source);
+    ~ElementManager();
     void addElement(GraphicElement *element);
     void removeElement(GraphicElement *pElement);
     /**
      *  only used in initialization
      */
-    GraphicElement **getElementById(int index);
+    GraphicElement *getElementById(int index);
 };

ArchitectureColoredPainting/src/Editor/GraphicElement.cpp

@@ -72,6 +72,10 @@ GroupElement::GroupElement(FolderLayerWrapper *sourceLayer)
 {
     this->sourceLayer = sourceLayer;
 }
+void GroupElement::setSourceLayer(FolderLayerWrapper *sourceLayer)
+{
+    this->sourceLayer = sourceLayer;
+}
 QPainterPath GroupElement::getPaintObject() const
 {
     if (sourceLayer != nullptr)

ArchitectureColoredPainting/src/Editor/GraphicElement.h

@@ -51,7 +51,9 @@ class GroupElement : public GraphicElement
     FolderLayerWrapper *sourceLayer;
 
   public:
+    GroupElement() = default;
     GroupElement(FolderLayerWrapper *mSourceLayer);
     ~GroupElement() = default;
     QPainterPath getPaintObject() const override;
+    void setSourceLayer(FolderLayerWrapper *sourceLayer);
 };

ArchitectureColoredPainting/src/Editor/LayerManager.cpp

@@ -1,6 +1,11 @@
 #include "LayerManager.h"
-LayerManager::LayerManager(QJsonArray layers, ElementManager *elementManager)
+LayerManager::LayerManager(QJsonObject source, ElementManager *elementManager)
 {
+    QJsonObject rootJson = source.value("root-layer").toObject();
+    if (rootJson.value("is-folder").toBool())
+        root = new FolderLayerWrapper(rootJson, elementManager, nullptr);
+    else
+        root = new LeafLayerWrapper(rootJson, elementManager, nullptr);
 }
 void LayerManager::paint(QPainter *painter) const
 {

ArchitectureColoredPainting/src/Editor/LayerManager.h

@@ -8,6 +8,7 @@
 using std::pair;
 using std::vector;
 class ElementManager;
+class LayerWrapper;
 
 class LayerManager
 {
@@ -18,6 +19,6 @@ class LayerManager
     LayerPtrs involvedLeafLayersCache;
 
   public:
-    LayerManager(QJsonArray layers, ElementManager *elementManager);
+    LayerManager(QJsonObject source, ElementManager *elementManager);
     void paint(QPainter *painter) const;
 };

ArchitectureColoredPainting/src/Editor/LayerWrapper.cpp

@@ -1,14 +1,57 @@
 #include "LayerWrapper.h"
-
+using namespace std;
 void FolderLayerWrapper::addChild(LayerWrapper *child)
 {
+    for (auto &chi : children)
+        if (chi.get() == child)
+            return;
+    children.push_back(shared_ptr<LayerWrapper>(child));
 }
 
 void FolderLayerWrapper::removeChild(LayerWrapper *child)
 {
+    for (auto chi = children.begin(); chi != children.end(); chi++)
+        if ((*chi).get() == child)
+        {
+            children.erase(chi);
+            return;
+        }
 }
 
 QPainterPath LayerWrapper::getCache() const
 {
     return cache;
 }
+// TODO: undone
+LayerWrapper::LayerWrapper(QJsonObject json, LayerWrapper *parent)
+{
+}
+
+FolderLayerWrapper::FolderLayerWrapper(QJsonObject json, ElementManager *elementManager, LayerWrapper *parent)
+    : LayerWrapper(json, parent)
+{
+    QJsonArray childrenJson = json.value("children").toArray();
+    QJsonValue referencedJson = json.value("referenced-by");
+    if (!referencedJson.isNull())
+    {
+        auto p = reinterpret_cast<GroupElement *>(elementManager->getElementById(referencedJson.toInt()));
+        if (p != nullptr)
+            p->setSourceLayer(this);
+    }
+    for (auto childJson : childrenJson)
+    {
+        if (childJson.toObject().value("is-folder").toBool())
+            children.push_back(
+                shared_ptr<LayerWrapper>(new FolderLayerWrapper(childJson.toObject(), elementManager, this)));
+        else
+            children.push_back(
+                shared_ptr<LayerWrapper>(new LeafLayerWrapper(childJson.toObject(), elementManager, this)));
+    }
+}
+#include <iostream>
+LeafLayerWrapper::LeafLayerWrapper(QJsonObject json, ElementManager *elementManager, LayerWrapper *parent)
+    : LayerWrapper(json, parent)
+{
+    int elementIndex = json.value("element").toInt();
+    wrappedElement = elementManager->getElementById(elementIndex);
+}

ArchitectureColoredPainting/src/Editor/LayerWrapper.h

@@ -1,9 +1,11 @@
 #pragma once
+#include "ElementManager.h"
 #include "GraphicElement.h"
 #include "LayerStyle.h"
 #include <QGraphicsItem>
 #include <QGraphicsItemGroup>
 #include <QGraphicsScene>
+#include <QJSonObject>
 #include <QLine>
 #include <QPoint>
 #include <memory>
@@ -13,6 +15,7 @@ using std::vector;
 class GraphicElement;
 class SimpleElement;
 class GroupElement;
+class ElementManager;
 
 class LayerWrapper
 {
@@ -24,7 +27,8 @@ class LayerWrapper
 
   public:
     QPainterPath getCache() const; // invoke by manager, then invoke parent's applyStyles
-    // todo: provide atomic operations for Events
+    LayerWrapper(QJsonObject json, LayerWrapper *parent);
+    LayerWrapper() = default;
 };
 
 class FolderLayerWrapper : public LayerWrapper
@@ -33,6 +37,8 @@ class FolderLayerWrapper : public LayerWrapper
     vector<shared_ptr<LayerWrapper>> children;
 
   public:
+    FolderLayerWrapper() = default;
+    FolderLayerWrapper(QJsonObject json, ElementManager *elementManager, LayerWrapper *parent);
     void addChild(LayerWrapper *child);
     void removeChild(LayerWrapper *child);
 };
@@ -40,5 +46,9 @@ class FolderLayerWrapper : public LayerWrapper
 class LeafLayerWrapper : public LayerWrapper
 {
   private:
-    shared_ptr<SimpleElement> wrappedElement;
+    GraphicElement *wrappedElement;
+
+  public:
+    LeafLayerWrapper() = default;
+    LeafLayerWrapper(QJsonObject json, ElementManager *elementManager, LayerWrapper *parent);
 };