File indexing completed on 2024-04-21 03:41:44

 /*
     SPDX-FileCopyrightText: 2007 Carsten Niehaus <cniehaus@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "legendwidget.h"
 
 #include "prefs.h"
 #include "kalzium_debug.h"
 
 #include <QGridLayout>
 #include <QHBoxLayout>
 #include <QStyle>
 
 #include <KLocalizedString>
 
 LegendWidget::LegendWidget(QWidget *parent)
     : QWidget(parent)
 {
     m_update = true;
     m_dockArea = Qt::BottomDockWidgetArea;
     setContentsMargins(
         style()->pixelMetric(QStyle::PM_LayoutLeftMargin),
         style()->pixelMetric(QStyle::PM_LayoutTopMargin),
         style()->pixelMetric(QStyle::PM_LayoutRightMargin),
         style()->pixelMetric(QStyle::PM_LayoutBottomMargin)
     );
 }
 
 LegendWidget::~LegendWidget()
 {
     qDeleteAll(m_legendItemList);
 }
 
 void LegendWidget::setDockArea(Qt::DockWidgetArea newDockArea)
 {
     qCDebug(KALZIUM_LOG) << "dock Area changed" << newDockArea;
 
     m_dockArea = newDockArea;
     updateContent();
 }
 
 void LegendWidget::LockWidget()
 {
     m_update = false;
 }
 
 void LegendWidget::UnLockWidget()
 {
     m_update = true;
 }
 
 void LegendWidget::updateContent()
 {
     if (!m_update) {
         return;
     }
 
     QString gradientDesc;
     QList<QPair<QString, QColor>> items;
     KalziumElementProperty *elementProperty = KalziumElementProperty::instance();
     // Handle different Gradients
     switch (elementProperty->gradientId()) {
     case KalziumElementProperty::NOGRADIENT: // None
         break;
 
     case KalziumElementProperty::SOMGradientType:
         items << qMakePair(elementProperty->gradient()->description(), QColor());
         items << qMakePair(i18nc("one of the three states of matter (solid, liquid, vaporous or unknown)", "Solid"), QColor(Prefs::color_solid()));
 
         items << qMakePair(i18nc("one of the three states of matter (solid, liquid, vaporous or unknown)", "Liquid"), QColor(Prefs::color_liquid()));
 
         items << qMakePair(i18nc("one of the three states of matter (solid, liquid, vaporous or unknown)", "Vaporous"), QColor(Prefs::color_vapor()));
 
         items << qMakePair(i18nc("one of the three states of matter (solid, liquid, vaporous or unknown)", "Unknown"), QColor(Qt::lightGray));
         break;
 
     default:
         if (elementProperty->gradient()->logarithmicGradient()) {
             gradientDesc = i18nc("one of the two types of gradients available", "logarithmic");
         } else {
             gradientDesc = i18nc("one of the two types of gradients available", "linear");
         }
         items << qMakePair(i18n("%1 (%2)", elementProperty->gradient()->description(), gradientDesc), QColor());
         items << qMakePair(i18nc("Minimum value of the gradient",
                                  "Minimum: %1",
                                  QString::number(elementProperty->gradient()->minValue()) + ' ' + elementProperty->gradient()->unit()),
                            QColor(elementProperty->gradient()->firstColor()));
 
         items << qMakePair(i18nc("Maximum value of the gradient",
                                  "Maximum: %1",
                                  QString::number(elementProperty->gradient()->maxValue()) + ' ' + elementProperty->gradient()->unit()),
                            QColor(elementProperty->gradient()->secondColor()));
         break;
     }
     // schemes are always there
     items << qMakePair(i18n("Scheme: %1", elementProperty->scheme()->description()), QColor());
     items << elementProperty->scheme()->legendItems();
 
     updateLegendItemLayout(items);
 }
 
 void LegendWidget::updateLegendItemLayout(const QList<legendPair> &list)
 {
     if (layout()) {
         delete layout();
     }
     foreach (LegendItem *i, m_legendItemList) {
         delete i;
     }
 
     m_legendItemList.clear();
 
     auto layout = new QGridLayout(this);
     layout->setSpacing(0);
     layout->setVerticalSpacing(style()->pixelMetric(QStyle::PM_LayoutVerticalSpacing));
     layout->setContentsMargins(0, 0, 0, 0);
 
     int x = 0;
     int y = 0;
 
     for (const legendPair &pair : list) {
         auto item = new LegendItem(pair, this);
         m_legendItemList.append(item);
 
         if ((m_dockArea == Qt::BottomDockWidgetArea || m_dockArea == Qt::TopDockWidgetArea)) {
             if (!pair.second.isValid()) {
                 ++y;
                 x = 0;
             }
             if (x >= 3) {
                 ++y;
                 x = 1;
             }
         }
         layout->addWidget(item, x, y);
         ++x;
     }
     setLayout(layout);
 }
 
 void LegendWidget::legendItemAction(QColor color)
 {
     Q_EMIT resetElementMatch();
 
     if (color.operator==(QColor())) {
         return;
     }
 
     for (int element = 1; element <= 118; ++element) {
         if (isElementMatch(element, color)) {
             Q_EMIT elementMatched(element);
         }
     }
 }
 
 bool LegendWidget::isElementMatch(int element, QColor &color)
 {
     QColor elementBackgroundColor;
     QColor elementBorderColor;
 
     elementBackgroundColor = KalziumElementProperty::instance()->getElementColor(element);
     elementBorderColor = KalziumElementProperty::instance()->getBorderColor(element);
 
     switch (Prefs::colorgradientbox()) {
     case KalziumElementProperty::NOGRADIENT:
         if (elementBackgroundColor.operator!=(color)) {
             return true;
         }
         break;
 
     default: // all other gradients
         if (elementBorderColor.operator==(color) || elementBackgroundColor.operator==(color)) {
             return true;
         }
     }
     return false;
 }
 
 LegendItem::LegendItem(const QPair<QString, QColor> &pair, LegendWidget *parent)
     : QLabel(parent)
 {
     auto ItemLayout = new QHBoxLayout(this);
     ItemLayout->setContentsMargins(0, 0, 0, 0);
 
     if (pair.second.isValid()) {
         legendItemColor = pair.second;
         if (parent) {
             connect(this, &LegendItem::legenItemHoovered, parent, &LegendWidget::legendItemAction);
         }
 
         QPixmap LegendPixmap(20, height());
         LegendPixmap.fill(pair.second);
 
         auto LabelPixmap = new QLabel(this);
         LabelPixmap->setPixmap(LegendPixmap);
         ItemLayout->addWidget(LabelPixmap);
 
         setFrameShape(QFrame::NoFrame);
     }
     auto LegendLabel = new QLabel(this);
     LegendLabel->setText(pair.first);
     ItemLayout->addWidget(LegendLabel);
 
     ItemLayout->setAlignment(Qt::AlignLeft);
     setLayout(ItemLayout);
 }
 
 #if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
 void LegendItem::enterEvent(QEnterEvent *event)
 #else
 void LegendItem::enterEvent(QEvent *event)
 #endif
 {
     Q_EMIT legenItemHoovered(legendItemColor);
     QWidget::enterEvent(event);
 }
 
 void LegendItem::leaveEvent(QEvent *event)
 {
     Q_EMIT legenItemHoovered(QColor());
     QWidget::leaveEvent(event);
 }
 
 #include "moc_legendwidget.cpp"