feat(ui): add child anchor and content sizing to column layout

include/Cubed/ui/column_layout.hpp

@@ -1,6 +1,9 @@
 #pragma once
 #include "Cubed/ui/widget.hpp"
 namespace Cubed {
+
+enum class ColumnLayoutAnchor { LEFT, CENTER, RIGHT };
+
 class ColumnLayout : public Widget {
 public:
     ColumnLayout(const ColumnLayout&) = delete;
@@ -18,10 +21,13 @@ public:
     ColumnLayout& set_spacing(int spacing);
     // No need for parent node pointer; do not modify children's anchors and
     // scale.
-
+    ColumnLayout& set_child_anchor(ColumnLayoutAnchor anchor);
     void layout();
 
 private:
     int m_spacing = 0;
+    float m_content_height = 0;
+    float m_content_width = 0;
+    ColumnLayoutAnchor m_layout_anchor = ColumnLayoutAnchor::CENTER;
 };
 } // namespace Cubed

src/debug_collector.cpp

@@ -19,7 +19,7 @@ void DebugCollector::init(int width, int height) {
     m_widget.set_spacing(15);
     m_widget.set_anchor(Anchor::TOP_LEFT);
     m_widget.set_offset({0, 5});
-
+    m_widget.set_child_anchor(ColumnLayoutAnchor::LEFT);
     // version_text
     auto& version_text = m_widget.add_child<Label>("version");
     std::string version{"Version: " CUBED_VERSION};

src/ui/column_layout.cpp

@@ -9,32 +9,39 @@ void ColumnLayout::update(float dt) {
     Widget::update(dt);
 }
 
-float ColumnLayout::width() const {
-    if (m_parent) {
-        return m_parent->width();
-    }
-    return m_window_width;
-}
-float ColumnLayout::height() const {
-    if (m_parent) {
-        return m_parent->height();
-    }
-    return m_window_height;
-}
+float ColumnLayout::width() const { return m_content_width; }
+float ColumnLayout::height() const { return m_content_height; }
 
 ColumnLayout& ColumnLayout::set_spacing(int spacing) {
     m_spacing = spacing;
     return *this;
 }
-
+ColumnLayout& ColumnLayout::set_child_anchor(ColumnLayoutAnchor anchor) {
+    m_layout_anchor = anchor;
+    return *this;
+}
 void ColumnLayout::layout() {
     auto& children = Widget::children();
     int y = 0;
-    for (auto& child : children) {
-        child->set_offset({0, y});
-        child->set_anchor(m_anchor);
-        y += child->height() + m_spacing;
+    Anchor anchor = Anchor::TOP_LEFT;
+    switch (m_layout_anchor) {
+    case ColumnLayoutAnchor::LEFT:
+        anchor = Anchor::TOP_LEFT;
+        break;
+    case ColumnLayoutAnchor::CENTER:
+        anchor = Anchor::TOP_CENTER;
+        break;
+    case ColumnLayoutAnchor::RIGHT:
+        anchor = Anchor::TOP_RIGHT;
+        break;
     }
+    for (auto& child : children) {
+        child->set_anchor(anchor);
+        child->set_offset({0, y});
+        y += child->height() + m_spacing;
+        m_content_width = std::max(m_content_width, child->width());
+    }
+    m_content_height = children.empty() ? 0 : (y - m_spacing);
 }
 
 } // namespace Cubed

src/ui/pause_menu_ui_manager.cpp

@@ -21,6 +21,11 @@ void PauseMenuUIManager::init() {
     auto& layout = rect->add_child<ColumnLayout>();
     layout.set_anchor(Anchor::CENTER);
     layout.set_spacing(20);
+    {
+        auto& title = layout.add_child<Label>();
+        title.set_text("Pause Menu");
+        title.set_scale(0.75f);
+    }
     {
         auto& button = layout.add_child<Button>();
         button.set_default_image(texture_manager);

src/ui/settings_ui.cpp

@@ -37,7 +37,10 @@ void SettingsUI::init() {
         slider.set_track_image("texture/ui/slider_track001.png",
                                texture_manager);
     };
-
+    {
+        auto& title = layout.add_child<Label>();
+        title.set_text("Setting");
+    }
     {
         auto& fov = layout.add_child<Slider>();
         fov.set_slider(&v.fov, 20.0f, 120.0f);