#include <QPainter>
// #include <QDebug>

#include "qt_texqmlitem.h"

using namespace microtex;

TexQmlItem::TexQmlItem(QQuickItem* parent, float text_size)
    : QQuickPaintedItem(parent), _render(nullptr), _text_size(text_size), _padding(0) {
  setImplicitHeight(30);
  setImplicitWidth(100);
}

TexQmlItem::~TexQmlItem() {
  delete _render;
}

void TexQmlItem::paint(QPainter* painter) {
  if (_render != nullptr) {
    //        painter->setRenderHint(QPainter::Antialiasing, true);
    Graphics2D_qt g2(painter);
    _render->draw(g2, _padding, _padding);
  }
}

void TexQmlItem::setLatexString(const QString& latex) {
  if (m_latexString == latex) {
    return;
  }
  m_latexString = latex;
  if (_render != nullptr) {
    delete _render;
  }

  try {
    _render = LaTeX::parse(
      latex.toStdString(),
      width() - _padding * 2,
      _text_size,
      _text_size / 3.f,
      0xff424242
    );
    if (_render) {
      setImplicitHeight(_render->getHeight());
      setImplicitWidth(_render->getWidth());
    }
  } catch (...) {
    _render = nullptr;
  }

  update();
}

QString TexQmlItem::latexString() const {
  return m_latexString;
}