Stripped back old shader code for now.

archive/ui/container/CMakeLists.txt

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+# Copyright (c) 2023 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    UIColumnContainer.cpp
+    UIContainer.cpp
+    UIPaddingContainer.cpp
+    UIRowContainer.cpp
+)

archive/ui/container/UIColumnContainer.cpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "assert/assert.hpp"
+#include "UIColumnContainer.hpp"
+
+using namespace Dawn;
+
+void UIColumnContainer::updateAlignment(
+  const glm::vec2 parentPosition,
+  const glm::vec2 parentSize,
+  const float_t canvasScale
+) {
+  this->updateSelfAlignment(parentPosition, parentSize, canvasScale);
+
+  // Now we have our dimensions, divide evenly
+  auto children = this->getChildren();
+
+  float_t x = 0.0f;
+  float_t xPiece = this->size.x / (float_t)children.size();
+  
+  // Update all children
+  for(auto &child : children) {
+    child->updateAlignment(
+      this->position + glm::vec2(x, 0),
+      glm::vec2(
+        xPiece,
+        this->size.y
+      ),
+      canvasScale
+    );
+    x += xPiece;
+  }
+}

archive/ui/container/UIColumnContainer.hpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "ui/container/UIContainer.hpp"
+
+namespace Dawn {
+  class UIColumnContainer final : public UIContainer {
+    public:
+      void updateAlignment(
+        const glm::vec2 parentPosition,
+        const glm::vec2 parentSize,
+        const float_t canvasScale
+      ) override;
+  };
+}

archive/ui/container/UIContainer.cpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "assert/assert.hpp"
+#include "UIContainer.hpp"
+
+using namespace Dawn;
+
+std::vector<std::shared_ptr<UIElement>> UIContainer::getChildren() {
+  return this->children;
+}
+
+float_t UIContainer::getContentWidth() {
+  float_t width = 0;
+  auto children = this->getChildren();
+  for(auto child : children) {
+    width = Math::max(width, child->getWidth());
+  }
+  return width;
+}
+
+float_t UIContainer::getContentHeight() {
+  float_t height = 0;
+  auto children = this->getChildren();
+  for(auto child : children) {
+    height = Math::max(height, child->getHeight());
+  }
+  return height;
+}
+
+void UIContainer::appendChild(std::shared_ptr<UIElement> child) {
+  assertNotNull(child, "Cannot append a null child!");
+  this->children.push_back(child);
+}
+
+void UIContainer::removeChild(std::shared_ptr<UIElement> child) {
+  assertNotNull(child, "Cannot remove a null child!");
+  auto it = std::find(this->children.begin(), this->children.end(), child);
+  if(it == this->children.end()) return;
+  this->children.erase(it);
+}
+
+void UIContainer::clearChildren() {
+  this->children.clear();
+}

archive/ui/container/UIContainer.hpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "ui/UIAlignableElement.hpp"
+
+namespace Dawn {
+  class UIContainer : public UIAlignableElement {
+    private:
+      std::vector<std::shared_ptr<UIElement>> children;
+
+    public:
+      std::vector<std::shared_ptr<UIElement>> getChildren() override;
+
+      float_t getContentWidth() override;
+      float_t getContentHeight() override;
+      
+      /**
+       * Appends a child to this container.
+       * 
+       * @param child Child to append.
+       */
+      void appendChild(std::shared_ptr<UIElement> child);
+
+      /**
+       * Removes a child from this container.
+       * 
+       * @param child Child to remove.
+       */
+      void removeChild(std::shared_ptr<UIElement> child);
+
+      /**
+       * Removes all children from this container.
+       */
+      void clearChildren();
+  };
+}

archive/ui/container/UIPaddingContainer.cpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "UIPaddingContainer.hpp"
+
+using namespace Dawn;
+
+float_t UIPaddingContainer::getContentWidth() {
+  float_t width = 0.0f;
+  for(auto &child : getChildren()) {
+    width = Math::max(width, child->getWidth());
+  }
+  return width + padding.x + padding.z;
+}
+
+float_t UIPaddingContainer::getContentHeight() {
+  float_t height = 0.0f;
+  for(auto &child : getChildren()) {
+    height = Math::max(height, child->getHeight());
+  }
+  return height + padding.y + padding.w;
+}
+
+void UIPaddingContainer::updateAlignment(
+  const glm::vec2 parentPosition,
+  const glm::vec2 parentSize,
+  const float_t canvasScale
+) {
+  glm::vec2 childPosition = parentPosition + glm::vec2(padding.x, padding.y);
+  glm::vec2 childSize = parentSize - glm::vec2(padding.x + padding.z, padding.y + padding.w);
+
+  auto children = getChildren();
+  for(auto &child : children) {
+    child->updateAlignment(childPosition, childSize, canvasScale);
+  }
+}

archive/ui/container/UIPaddingContainer.hpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "ui/container/UIContainer.hpp"
+
+namespace Dawn {
+  class UIPaddingContainer final : public UIContainer {
+    public:
+      glm::vec4 padding = { 0, 0, 0, 0 };
+
+      float_t getContentWidth() override;
+      float_t getContentHeight() override;
+      void updateAlignment(
+        const glm::vec2 parentPosition,
+        const glm::vec2 parentSize,
+        const float_t canvasScale
+      ) override;
+  };
+}

archive/ui/container/UIRowContainer.cpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "UIRowContainer.hpp"
+
+using namespace Dawn;
+
+float_t UIRowContainer::getContentWidth() {
+  float_t width = 0.0f;
+  for(auto &child : this->getChildren()) {
+    width = Math::max(width, child->getWidth());
+  }
+  return width;
+}
+
+float_t UIRowContainer::getContentHeight() {
+  float_t height = 0.0f;
+  for(auto &child : this->getChildren()) {
+    height += child->getHeight();
+  }
+  return height;
+}
+
+void UIRowContainer::updateAlignment(
+  const glm::vec2 parentPosition,
+  const glm::vec2 parentSize,
+  const float_t canvasScale
+) {
+  this->updateSelfAlignment(parentPosition, parentSize, canvasScale);
+
+  // Now we have our dimensions, divide evenly
+  auto children = this->getChildren();
+
+  float_t y = 0.0f;
+  float_t yPiece = this->size.y / (float_t)children.size();
+  
+  // Update all children
+  for(auto &child : children) {
+    child->updateAlignment(
+      this->position + glm::vec2(0, y),
+      glm::vec2(
+        this->size.x,
+        yPiece
+      ),
+      canvasScale
+    );
+    y += yPiece;
+  }
+}

archive/ui/container/UIRowContainer.hpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "ui/container/UIContainer.hpp"
+
+namespace Dawn {
+  class UIRowContainer final : public UIContainer {
+    public:
+      float_t getContentWidth() override;
+      float_t getContentHeight() override;
+      void updateAlignment(
+        const glm::vec2 parentPosition,
+        const glm::vec2 parentSize,
+        const float_t canvasScale
+      ) override;
+  };
+}