Editor namespace housekeeping, Canvas expansion

src/gui/canvas.h

@@ -4,11 +4,11 @@
 #include <imgui/imgui.h>
 
 #include <cmath>
-#include <memory>
 #include <string>
 
 namespace yaze {
 namespace gui {
+
 class Canvas {
  public:
   Canvas() = default;
@@ -17,11 +17,16 @@ class Canvas {
 
   void Update();
 
-  void DrawBackground();
+  void DrawBackground(ImVec2 canvas_size = ImVec2(0, 0));
   void UpdateContext();
-  void DrawGrid();
+  void DrawGrid(float grid_step = 64.0f);
   void DrawOverlay();  // last
 
+  void SetCanvasSize(ImVec2 canvas_size) {
+    canvas_sz_ = canvas_size;
+    custom_canvas_size_ = true;
+  }
+  auto GetDrawList() const { return draw_list_; }
   auto GetZeroPoint() const { return canvas_p0_; }
 
  private:
@@ -30,15 +35,16 @@ class Canvas {
   bool dragging_select_ = false;
   bool custom_canvas_size_ = false;
 
-  std::string title_;
-
   ImDrawList* draw_list_;
   ImVector<ImVec2> points_;
   ImVec2 scrolling_;
   ImVec2 canvas_sz_;
   ImVec2 canvas_p0_;
   ImVec2 canvas_p1_;
+
+  std::string title_;
 };
+
 }  // namespace gui
 }  // namespace yaze