started implementing dynamic widget allocation by xml tag

engine/layout.h

@@ -1,14 +1,9 @@
 #pragma once
+#include "shape.hpp"
+#include "util.hpp"
 
 namespace att
 {
-    uint16_t constexpr const_hash(char const *input) 
-    {
-        return *input ?
-            static_cast<uint16_t>(*input) + 33 * const_hash(input + 1) :
-            5381;
-    }
-
     enum class kAttribute : uint16_t 
     {
         Width       = const_hash("width"), 
@@ -107,13 +102,20 @@ namespace att
 
 class Widget
 {
-
+public:
+    glm::mat4 mvp;
+    glm::vec4 clip;
+    virtual void draw() { };
 };
 
 class WidgetBorder : public Widget
 {
 public:
-    static class Plane* m_plane;
+    static Plane* m_plane;
+    virtual void draw() override
+    {
+        m_plane->draw_fill();
+    }
 };
 
 class Node
@@ -186,11 +188,12 @@ public:
     }
 
     void update(float width, float height);
-    void update_internal(glm::vec2 origin);
+    void update_internal(const glm::vec2& origin, const glm::mat4& proj);
     void parse_attributes(att::kAttribute ka, const tinyxml2::XMLAttribute* attr);
     void load(const char* path);
     void load_internal(const tinyxml2::XMLElement* x_node);
     void reload();
+    void draw();
 
     class iterator
     {