extension/src/openvic-extension/classes/GFXButtonStateTexture.hpp


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#pragma once

#include <godot_cpp/classes/image_texture.hpp>

#include <openvic-simulation/utility/Getters.hpp>

namespace OpenVic {
   class GFXButtonStateTexture : public godot::ImageTexture {
      GDCLASS(GFXButtonStateTexture, godot::ImageTexture)

   public:
      enum ButtonState {
         HOVER,
         PRESSED,
         DISABLED
      };

   private:
      ButtonState PROPERTY(button_state);
      godot::Ref<godot::Image> state_image;

   protected:
      static void _bind_methods();

   public:
      GFXButtonStateTexture();

      /* Create a GFXButtonStateTexture using the specified godot::Image. Returns nullptr if generate_state_image fails. */
      static godot::Ref<GFXButtonStateTexture> make_gfx_button_state_texture(
         ButtonState button_state, godot::Ref<godot::Image> const& source_image = nullptr
      );

      /* Set the ButtonState to be generated by this class (calling this does not trigger state image generation). */
      void set_button_state(ButtonState new_button_state);

      /* Generate a modified version of source_image and update the underlying godot::ImageTexture to use it. */
      godot::Error generate_state_image(godot::Ref<godot::Image> const& source_image);

      static godot::StringName const& get_generate_state_image_func_name();

      static godot::StringName const& button_state_to_theme_name(ButtonState button_state);
      godot::StringName const& get_button_state_theme() const;
   };
}

VARIANT_ENUM_CAST(OpenVic::GFXButtonStateTexture::ButtonState);