#include "lts_background_widget.h"

#include <QPaintEvent>
#include <QPainter>
#include <QDebug>

#ifdef Q_OS_WIN
#include <QtPlatformHeaders/qwindowswindowfunctions.h>
#endif


namespace LtsWidgets
{

LtsBackgroundWidget::LtsBackgroundWidget(QWidget *parent)
  : QDialog(parent)
  , m_isUltraWide(false)
{
  setMouseTracking(true); 
  setWindowFlags(windowFlags() | Qt::FramelessWindowHint );
  setWindowTitle(QStringLiteral("Splash"));

  setBackground();
}


void LtsBackgroundWidget::setBackground()
{
  static const auto backgroundFiles =
  {
    QStringLiteral(":/project/background.png"),
    QStringLiteral(":/project/background.jpg"),
  };
  static const auto backgroundFilesWide =
  {
    QStringLiteral(":/project/background_wide.png"),
    QStringLiteral(":/project/background_wide.jpg"),
  };

  m_pixmap = QPixmap();
  for (const QString &f : m_isUltraWide ? backgroundFilesWide : backgroundFiles)
  {
    if (!QFile::exists(f))
      continue;
    m_pixmap = QPixmap(f);
    if (m_pixmap.isNull())
      continue;
    break;
  }

  if (m_pixmap.isNull())
  {
    if (m_isUltraWide)
    {
      m_isUltraWide = false;
      setBackground();
    }
    else
    {
      qWarning() << "BackgroundWidget::c_tor: file missing or is not a valid image ':/project/background.png'";
    }
  }
}


void LtsBackgroundWidget::setUltraWide(bool set)
{
  if (set == m_isUltraWide) 
    return;

  m_isUltraWide = set;
  setBackground();
  update(); 
}


void LtsBackgroundWidget::resizeEvent(QResizeEvent *e)
{
  setUltraWide(width() > 3000);
  QDialog::resizeEvent(e);
}


void LtsBackgroundWidget::paintEvent(QPaintEvent *e)
{
  if (!m_pixmap.isNull())
  {
    QPainter painter(this);
    painter.setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform);
    painter.drawPixmap(0, 0, width(), height(), m_pixmap); 
  }
  QDialog::paintEvent(e);
}


bool LtsBackgroundWidget::event(QEvent *e)
{
  if (e->type() == QEvent::KeyPress || 
      e->type() == QEvent::MouseButtonPress ||
      e->type() == QEvent::MouseButtonRelease ||
      e->type() == QEvent::MouseMove)
  {
    
    emit signalOperatorAction();
    e->ignore();
    return true;
  }

  return QDialog::event(e);
}


void LtsBackgroundWidget::showFullScreen()
{
  
#ifdef Q_OS_WIN
  winId();  
  QWindowsWindowFunctions::setHasBorderInFullScreen(windowHandle(), true);
#endif
  QDialog::showFullScreen();
  raise(); 
}


void LtsBackgroundWidget::closeEvent(QCloseEvent *e)
{
#ifdef DEVEL
  deleteLater();
#else
  e->ignore();
#endif
}

}