File indexing completed on 2024-05-19 05:44:23

 /*
     SPDX-FileCopyrightText: 2016-2019 Milian Wolff <mail@milianw.de>
 
     SPDX-License-Identifier: LGPL-2.1-or-later
 */
 
 #include "costdelegate.h"
 
 #include <QDebug>
 #include <QPainter>
 
 #include <cmath>
 
 CostDelegate::CostDelegate(int sortRole, int maxCostRole, QObject* parent)
     : QStyledItemDelegate(parent)
     , m_sortRole(sortRole)
     , m_maxCostRole(maxCostRole)
 {
 }
 
 CostDelegate::~CostDelegate() = default;
 
 void CostDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
 {
     // TODO: handle negative values
     const int64_t cost = index.data(m_sortRole).toULongLong();
     if (cost == 0) {
         QStyledItemDelegate::paint(painter, option, index);
         return;
     }
 
     const int64_t maxCost = index.data(m_maxCostRole).toULongLong();
     // top-down can miscalculate the peak cost
     const auto fraction = std::min(1.f, std::abs(float(cost) / maxCost));
     auto rect = option.rect;
     rect.setWidth(rect.width() * fraction);
 
     const auto& brush = painter->brush();
     const auto& pen = painter->pen();
 
     painter->setPen(Qt::NoPen);
 
     if (option.features & QStyleOptionViewItem::Alternate) {
         // we must handle this ourselves as otherwise the custom background
         // would get painted over with the alternate background color
         painter->setBrush(option.palette.alternateBase());
         painter->drawRect(option.rect);
     }
 
     auto color = QColor::fromHsv(120 - fraction * 120, 255, 255, (-((fraction - 1) * (fraction - 1))) * 120 + 120);
     painter->setBrush(color);
     painter->drawRect(rect);
 
     painter->setBrush(brush);
     painter->setPen(pen);
 
     if (option.features & QStyleOptionViewItem::Alternate) {
         auto o = option;
         o.features &= ~QStyleOptionViewItem::Alternate;
         QStyledItemDelegate::paint(painter, o, index);
     } else {
         QStyledItemDelegate::paint(painter, option, index);
     }
 }
 
 #include "moc_costdelegate.cpp"