Totally refactored UILabel

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

@@ -6,20 +6,71 @@
 #pragma once
 #include "scene/SceneItemComponent.hpp"
 #include "UICanvas.hpp"
+#include "display/shader/Shader.hpp"
+#include "util/mathutils.hpp"
 
 namespace Dawn {
-  class UIComponentRendaerable {
-    public:
-      int32_t cum;
+  enum UIComponentAlign {
+    UI_COMPONENT_ALIGN_START,
+    UI_COMPONENT_ALIGN_MIDDLE,
+    UI_COMPONENT_ALIGN_END,
+    UI_COMPONENT_ALIGN_STRETCH
   };
 
-  class UIComponent : public SceneItemComponent {
-    private:
-      UICanvas *canvas = nullptr;
+  class UIComponentRenderable {
+    public:
+      virtual std::vector<struct ShaderPassItem> getPassItems(
+        glm::mat4 projection,
+        glm::mat4 view
+      ) = 0;
+  };
+
+  class UIComponent : public SceneItemComponent, public UIComponentDimensional {
+    protected:
+      // Calculated (and cached) values
+      float_t width = 1;
+      float_t height = 1;
+
+      StateEvent<> eventAlignmentUpdated;
+      UIComponentDimensional * getParentDimensional();
+
+      void updateAlignment();
       
     public:
+      StateProperty<bool_t> alignmentNeedsUpdating;
+
+      /**
+       * Method used to calculate alignment dimensions.
+       * 
+       * @param align Alignment  value enumator.
+       * @param position Output position floating point.
+       * @param size Output size floating point.
+       * @param outerSize Outer size (of the parent).
+       * @param innerSize Inner size (of this element's content).
+       * @param alignment Alignment settings.
+       */
+      static void calculateDimensions(
+        enum UIComponentAlign align,
+        float_t *position,
+        float_t *size,
+        float_t outerSize,
+        float_t innerSize,
+        glm::vec2 alignment
+      );
+
+      //
+
+      StateProperty<UIComponentAlign> alignX;
+      StateProperty<UIComponentAlign> alignY;
+      StateProperty<glm::vec4> alignment;
+
       UIComponent(SceneItem *item);
 
+      float_t getWidth() override;
+      float_t getHeight() override;
+
+      void onStart() override;
+
       friend class UICanvas;
   };
 }