#include <cmath>
#include <ui/widget.h>

namespace extra2d {

Widget::Widget() { setSpatialIndexed(false); }

void Widget::setSize(const Size &size) {
  size_ = size;
  updateSpatialIndex();
}

void Widget::setSize(float width, float height) {
  setSize(Size(width, height));
}

Rect Widget::boundingBox() const {
  if (size_.empty()) {
    return Rect();
  }

  auto position = convertToWorldSpace(extra2d::Vec2::Zero());
  auto anchorPt = anchor();
  auto scaleVal = scale();

  float w = size_.width * scaleVal.x;
  float h = size_.height * scaleVal.y;
  float x0 = position.x - size_.width * anchorPt.x * scaleVal.x;
  float y0 = position.y - size_.height * anchorPt.y * scaleVal.y;
  float x1 = x0 + w;
  float y1 = y0 + h;

  float l = std::min(x0, x1);
  float t = std::min(y0, y1);
  return Rect(l, t, std::abs(w), std::abs(h));
}

// ------------------------------------------------------------------------
// 重写 onDraw
// ------------------------------------------------------------------------
void Widget::onDraw(Renderer &renderer) { onDrawWidget(renderer); }

} // namespace extra2d