/*
 * Copyright (C) 2010 Stefan Burnicki (stefan.burnicki@gmx.de)
 * <http://gitorious.org/bangarang> BANGARANG MEDIA PLAYER
 * Copyright 2011 Jörg Ehrichs <joerg.ehrichs@gmx.de>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "ratingdelegate.h"
#include "starrating.h"

#include <QApplication>
#include <QPainter>

RatingDelegate::RatingDelegate(QObject* parent /* = 0 */) : QStyledItemDelegate(parent), m_maxRating(StarRating::MaxRating) {
}

void RatingDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const {
  QStyleOptionViewItemV4 opt(option);
  QStyle* style = opt.widget ? opt.widget->style() : QApplication::style();
  style->drawPrimitive(QStyle::PE_PanelItemViewItem, &opt, painter, opt.widget);

  const int left = option.rect.left();
  const int top = option.rect.top();
  const int width = option.rect.width();
  const int height = option.rect.height();

  //Create base pixmap
  QPixmap pixmap(width, height);
  pixmap.fill(Qt::transparent);
  QPainter p(&pixmap);
  p.translate(-option.rect.topLeft());

  //Paint rating
  const int rating = index.data(Qt::DisplayRole).toInt();
  StarRating starRating = StarRating(rating, StarRating::Medium);
  starRating.setMaxRating(m_maxRating);
  QSize ratingSize = starRating.sizeHint();
  int ratingLeft = left + 2;
  int ratingTop = top + (height - ratingSize.height())/2;
  QRect ratingRect = QRect(QPoint(ratingLeft, ratingTop), ratingSize);
  starRating.setPoint(ratingRect.topLeft());
  starRating.paint(&p);

  p.end();

  //Draw finished pixmap
  painter->drawPixmap(option.rect.topLeft(), pixmap);
}

QSize RatingDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const {
  Q_UNUSED(option);
  Q_UNUSED(index);

  return StarRating::sizeHint(StarRating::Medium);
}