f002_Added layer stack class

CMakeLists.txt

@@ -11,7 +11,7 @@ add_executable(uml-creator
         uml-creator/Events/KeyEvent.h
         uml-creator/Window.h 
         uml-creator/Platform/Windows/WindowsWindow.h
-        uml-creator/Platform/Windows/WindowsWindow.cpp uml-creator/Events/WindowEvent.h uml-creator/Events/MouseEvent.h uml-creator/Layer.h uml-creator/Layer.cpp)
+        uml-creator/Platform/Windows/WindowsWindow.cpp uml-creator/Events/WindowEvent.h uml-creator/Events/MouseEvent.h uml-creator/Layer.h uml-creator/Layer.cpp uml-creator/LayerStack.h uml-creator/LayerStack.cpp)
 set(CMAKE_CXX_STANDARD 23)
 
 # Adding subdirectory for uml creator

uml-creator/LayerStack.cpp

@@ -0,0 +1,41 @@
+#include "LayerStack.h"
+
+LayerStack::LayerStack()
+{
+    m_LayerInsert = m_Layers.begin();
+}
+
+LayerStack::~LayerStack()
+{
+    for(Layer* layer : m_Layers)
+        delete layer;
+}
+
+void LayerStack::pushLayer(Layer* layer)
+{
+    m_LayerInsert = m_Layers.emplace(m_LayerInsert, layer);
+}
+
+void LayerStack::popLayer(Layer* layer)
+{
+    auto iterator = std::find(m_Layers.begin(), m_Layers.end(), layer);
+    if(iterator != m_Layers.end())
+    {
+        m_Layers.erase(iterator);
+        m_LayerInsert--;
+    }
+}
+
+void LayerStack::pushOverlay(Layer* overlay)
+{
+    m_Layers.emplace_back(overlay);
+}
+
+void LayerStack::popOverlay(Layer* overlay)
+{
+    auto iterator = std::find(m_Layers.begin(), m_Layers.end(), overlay);
+    if(iterator != m_Layers.end())
+    {
+        m_Layers.erase(iterator);
+    }
+}

uml-creator/LayerStack.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <vector>
+
+#include "Layer.h"
+
+class LayerStack
+{
+public:
+    LayerStack();
+    ~LayerStack();
+
+    void pushLayer(Layer* layer);
+    void popLayer(Layer* layer);
+
+    void pushOverlay(Layer* layer);
+    void popOverlay(Layer* layer);
+
+    std::vector<Layer*>::iterator begin() { return m_Layers.begin(); };
+    std::vector<Layer*>::iterator end() { return m_Layers.end(); };
+
+private:
+    std::vector<Layer*> m_Layers;
+    std::vector<Layer*>::iterator m_LayerInsert;
+
+};