button.h

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2025-2026 Manuel Osorio
#pragma once
 
#include "flint/ui/ui-node.h"
#include "flint/ui/widgets/sprite.h"
 
#include <functional>
#include <string>
 
namespace Flint {
 
  enum class IconPlacement {
    Left, 
    Right 
  };
 
  class UIButton : public UINode {
    public:
      UIButton();
      explicit UIButton(std::string text);
      ~UIButton() override = default;
 
      void setOnClick(std::function<void()> callback);
 
      bool isFocusable() const override {
        return true;
      }
 
      void measure(UIConstraints constraints) override;
      void arrange(const Rect<float> &rect) override;
 
      void handleEvent(const UIEvent &event) override;
      void render(UICanvas &canvas) const override;
 
      void setIcon(std::unique_ptr<UISprite> icon, IconPlacement placement = IconPlacement::Left) {
        m_icon = std::move(icon);
 
        m_iconPlacement = placement;
      }
 
      void setIconGap(float gap) {
        m_iconGap = gap;
      }
 
    private:
      std::function<void()> m_onClick;
 
      void activate() const;
 
      std::unique_ptr<UISprite> m_icon;
      IconPlacement             m_iconPlacement = IconPlacement::Left;
      float                     m_iconGap = 4.f;
  };
 
}