Lots of UI Component Updates

src/dawn/scene/components/display/Camera.cpp

@@ -65,7 +65,7 @@ float_t Camera::getAspect() {
   return target.getWidth() / target.getHeight();
 }
 
-void Camera::start() {
+void Camera::onStart() {
   this->updateProjection();
 }
 

src/dawn/scene/components/display/Camera.hpp

@@ -73,7 +73,7 @@ namespace Dawn {
       /**
        * Event triggered by the scene item when the item is added to the scene.
        */
-      void start() override;
+      void onStart() override;
 
       /**
        * Disposes a previously initialized camera.

src/dawn/scene/components/display/Material.cpp

@@ -65,7 +65,4 @@ std::shared_ptr<Shader> Material::getShader() {
 void Material::setShader(std::shared_ptr<Shader> shader) {
   this->shader = shader;
   this->updateShaderParameters();
-}
-
-void Material::start() {
 }

src/dawn/scene/components/display/Material.hpp

@@ -58,10 +58,5 @@ namespace Dawn {
        * This method assumes that the shader has already been bound.
        */
       void setShaderParameters();
-
-      /**
-       * Overrides the default SceneItemComponent start method.
-       */
-      void start() override;
   };
 }

src/dawn/scene/components/display/MeshRenderer.cpp

@@ -11,8 +11,4 @@ MeshRenderer::MeshRenderer(SceneItem &item) :
   SceneItemComponent(item)
 {
   
-}
-
-void MeshRenderer::start() {
-
 }

src/dawn/scene/components/display/MeshRenderer.hpp

@@ -18,10 +18,5 @@ namespace Dawn {
        * @param item Scene Item this mesh renderer belongs to.
        */
       MeshRenderer(SceneItem &item);
-
-      /**
-       * Overrides the default SceneItemComponent start method.
-       */
-      void start() override;
   };
 }

src/dawn/scene/components/ui/UICanvas.cpp

@@ -16,7 +16,6 @@ std::shared_ptr<UICanvas> UICanvas::createCanvas(std::shared_ptr<Scene> scene) {
 }
 
 UICanvas::UICanvas(SceneItem &item) : SceneItemComponent(item) {
-
 }
 
 float_t UICanvas::getWidth() {
@@ -27,6 +26,27 @@ float_t UICanvas::getHeight() {
   return this->getGame().renderManager.getBackBuffer().getHeight();
 }
 
-void UICanvas::start() {
+void UICanvas::onStart() {
+  std::cout << "Canvas event" << std::endl;
+  this->getGame().renderManager.getBackBuffer()
+    .eventRenderTargetResized.addListener(this, &UICanvas::onBackBufferResize)
+  ;
+}
 
+void UICanvas::onBackBufferResize(
+  RenderTarget &target,
+  float_t width,
+  float_t height
+) {
+  auto it = this->children.begin();
+  while(it != this->children.end()) {
+    (*it)->updatePositions();
+    ++it;
+  }
+}
+
+UICanvas::~UICanvas() {
+  this->getGame().renderManager.getBackBuffer()
+    .eventRenderTargetResized.removeListener(this, &UICanvas::onBackBufferResize)
+  ;
 }

src/dawn/scene/components/ui/UICanvas.hpp

@@ -5,6 +5,7 @@
 
 #pragma once
 #include "scene/SceneItemComponent.hpp"
+#include "display/RenderTarget.hpp"
 
 namespace Dawn {
   enum UIDrawType {
@@ -16,6 +17,13 @@ namespace Dawn {
   class UIComponent;
 
   class UICanvas : public SceneItemComponent {
+    protected:
+      void onBackBufferResize(
+        RenderTarget &target,
+        float_t width,
+        float_t height
+      );
+
     public:
       static std::shared_ptr<UICanvas> createCanvas(
         std::shared_ptr<Scene> scene
@@ -37,6 +45,8 @@ namespace Dawn {
       float_t getWidth();
       float_t getHeight();
 
-      void start() override;
+      void onStart() override;
+
+      ~UICanvas();
   };
 }