UI

archive/ui/UIGrid.hpp

@@ -0,0 +1,83 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "UIComponent.hpp"
+#include "util/mathutils.hpp"
+
+namespace Dawn {
+  struct UIGridPosition {
+    int32_t x;
+    int32_t y;
+    enum UIComponentAlign alignX;
+    enum UIComponentAlign alignY;
+  };
+
+
+  class UIGrid : public UIComponent {
+    private:
+      int32_t rows = 1;
+      int32_t columns = 1;
+      float_t gutterX = 0;
+      float_t gutterY = 0;
+      float_t sizeRow, sizeCol;
+      std::map<UIComponent*, struct UIGridPosition> gridChildren;
+      bool_t alignmentListenerLocked = false;
+
+      /**
+       * Internal method to update the alignment of a child.
+       * 
+       * @param child Child UI component.
+       * @param pos Positional information of the child UI item..
+       */
+      void alignChild(UIComponent *child, struct UIGridPosition pos);
+
+      void onChildAligned(UIComponent *child);
+
+    protected:
+      void updatePositions() override;
+      std::vector<struct ShaderPassItem> getSelfPassItems(
+        glm::mat4 projection,
+        glm::mat4 view,
+        glm::mat4 transform
+      ) override;
+
+    public:
+      UIGrid(UICanvas *canvas);
+
+      /**
+       * Sets the dimensions of the grid.
+       * 
+       * @param columns Count of columns in the grid.
+       * @param rows Count of rows in the grid.
+       * @param gutterX Gutter spacing between the cells of the grid.
+       * @param gutterY Gutter spacing between the cells of the grid.
+       */
+      void setGridSize(
+        int32_t columns, int32_t rows, 
+        float_t gutterX, float_t gutterY
+      );
+
+      /**
+       * Adds a UI component to the grid.
+       * 
+       * @param component Component to add to the grid.
+       * @param column Column Position.
+       * @param row Row Position.
+       * @param alignX X alignment of the component within the cell.
+       * @param alignY Y alignment of the component within the cell.
+       */
+      void addToGrid(
+        UIComponent *ui,
+        int32_t x, int32_t y,
+        enum UIComponentAlign alignX, enum UIComponentAlign alignY
+      );
+
+      int32_t getRows();
+      int32_t getColumns();
+
+      void removeChild(UIComponent *component) override;
+  };
+}