refactor(ui): simplify Button API with property setters

include/Cubed/ui/button.hpp

@@ -18,41 +18,35 @@ public:
 
     bool handle_mouse_move_event(const MouseMoveEvent& e) override;
     bool handle_mouse_button_event(const MouseButtonEvent& e) override;
-    void set_window_size(int width, int height) override;
     Button& set_scale(float scale);
-    Widget& set_anchor(Anchor anchor) override;
-    Widget& set_offset(glm::ivec2 offset) override;
-    glm::vec2 pos() const override;
+
     float width() const override;
     float height() const override;
+
+    Button& set_width(float width);
+    Button& set_height(float height);
+    Button& set_background_image(const std::string& path,
+                                 TextureManager& texture_manager);
+    Button& set_text(const std::string& text);
+
     float scale() const;
     template <typename F> Button& set_clicked(F&& f) {
         m_clicked = std::forward<F>(f);
         return *this;
     }
 
-    template <typename T, typename... Args> T& set_background(Args&&... args) {
-        auto w = std::make_unique<T>(std::forward<Args>(args)..., m_parent);
-        T& ref = *w;
-        m_background = std::move(w);
-        return ref;
-    }
-
-    template <typename T, typename... Args> T& set_foreground(Args&&... args) {
-        auto w = std::make_unique<T>(std::forward<Args>(args)..., this);
-        T& ref = *w;
-        m_foreground = std::move(w);
-        m_foreground->set_anchor(Anchor::CENTER);
-        return ref;
-    }
-
 private:
+    static constexpr float PADDING = 5.0f;
+    static constexpr float DEFAULT_SCALE = 3.0f;
     std::function<void()> m_clicked;
     std::unique_ptr<Image> m_background;
     std::unique_ptr<Label> m_foreground;
     bool m_hovered = false;
-
+    float m_width = NORMAL_BUTTON_WIDTH;
+    float m_height = NORMAL_BUTTON_HEIGHT;
+    float m_scale = DEFAULT_SCALE;
     void on_render(Renderer& renderer) override;
     void on_update(float dt) override;
+    void update_text_scale();
 };
 } // namespace Cubed

include/Cubed/ui/label.hpp

@@ -25,9 +25,12 @@ public:
 
     float width() const override;
     float height() const override;
+    float real_width() const;
+    float real_height() const;
     float offset_x() const;
     float offset_y() const;
     float scale() const;
+    const std::string& text() const;
 
 protected:
     virtual void on_update(float dt) override;

include/Cubed/ui/slider.hpp

@@ -38,8 +38,8 @@ private:
     std::unique_ptr<Image> m_track;
     std::unique_ptr<Image> m_thumb;
     float m_scale = 1.0f;
-    float m_width = 0.0f;
-    float m_height = 0.0f;
+    float m_width = NORMAL_SLIDER_WIDTH;
+    float m_height = NORMAL_SLIDER_HEIGHT;
     float m_xpos = 0.0f;
     bool m_dragging = false;
     bool m_inside = false;

include/Cubed/ui/widget.hpp

@@ -8,6 +8,11 @@
 namespace Cubed {
 class Renderer;
 
+constexpr float NORMAL_BUTTON_WIDTH = 225.0f;
+constexpr float NORMAL_BUTTON_HEIGHT = 20.0f;
+constexpr float NORMAL_SLIDER_WIDTH = 225.0f;
+constexpr float NORMAL_SLIDER_HEIGHT = 20.0f;
+
 class Widget {
 
 public: