#include <SDL2/SDL_events.h>
#include <SDL2/SDL_rect.h>

#include <basic_widgets/core/math.hpp>
#include <basic_widgets/w/feat/mouse_handler.hpp>

using namespace bwidgets;

auto MouseHandler::handle_mouse(const SDL_MouseButtonEvent& ev, const SDL_Rect& orig)
  -> MouseHandler*
{
    if (_click_area == nullptr) return this;

    const SDL_Point p {ev.x, ev.y};
    const SDL_Rect  vp {rect_offset(*_click_area, orig)};

    if (ev.type == SDL_MOUSEBUTTONDOWN) {
        if (SDL_PointInRect(&p, &vp) == SDL_TRUE) {
            push(true);
            _handle_mouse_button(ev, vp);
        }
        else focus(false);
    }
    else {
        if (_is_pushed) {
            if (SDL_PointInRect(&p, &vp) == SDL_TRUE) {
                focus(true);

                if (click_handler != nullptr) click_handler(ev);
            }
            push(false);
            _handle_mouse_button(ev, vp);
        }
    }

    return this;
}

auto MouseHandler::handle_mouse(const SDL_MouseMotionEvent& ev, const SDL_Rect& orig)
  -> MouseHandler*
{
    if (_click_area == nullptr) return this;

    const SDL_Point p {ev.x, ev.y};
    const SDL_Rect  vp {rect_offset(*_click_area, orig)};

    _is_hovered = SDL_PointInRect(&p, &vp) != 0;

    if (_is_hovered) _handle_mouse_motion(ev, orig);

    return this;
}

auto MouseHandler::push(bool state) -> MouseHandler*
{
    _on_push(state);
    _is_pushed = state;

    return this;
}