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

 /*
     SPDX-FileCopyrightText: 2004, 2005, 2006, 2007 Carsten Niehaus <cniehaus@kde.org>
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "detailedgraphicaloverview.h"
 
 #include "kalziumelementproperty.h"
 #include "kalziumdataobject.h"
 #include "kalziumutils.h"
 #include "kalzium_debug.h"
 
 #include <KLocalizedString>
 
 #include <QFile>
 #include <QFontDatabase>
 #include <QPainter>
 #include <QRect>
 #include <QStandardPaths>
 #include <QSvgRenderer>
 #include <QGuiApplication>
 
 #include "prefs.h"
 #include "colorutils.h"
 #include <element.h>
 
 DetailedGraphicalOverview::DetailedGraphicalOverview(QWidget *parent)
     : QWidget(parent)
 {
     setAttribute(Qt::WA_OpaquePaintEvent, true);
 
     setMinimumSize(300, 200);
 
     // Set Hydrogen as initial element.
     setElement(1);
 }
 
 void DetailedGraphicalOverview::setElement(int el)
 {
     m_element = KalziumDataObject::instance()->element(el);
     setBackgroundColor(KalziumElementProperty::instance()->getElementColor(el));
     update();
 }
 
 
 void DetailedGraphicalOverview::setBackgroundColor(QColor bgColor)
 {
     if (bgColor == Qt::transparent) {
         bgColor = palette().window().color();
     }
 
     m_textColor = ColorUtils::contrastColor(bgColor);
     m_backgroundBrush = QBrush(ColorUtils::tintWithAlpha(qGuiApp->palette().color(QPalette::Normal, QPalette::Window), bgColor, 0.2));
 }
 
 void DetailedGraphicalOverview::paintEvent(QPaintEvent *)
 {
     const int margins = 4;
     QPainter p;
     p.begin(this);
 
     p.setBrush(Qt::SolidPattern);
 
     if (!m_element) {
         p.setBrush(palette().window().color());
         p.drawRect(rect());
         p.drawText(0, 0, width(), height(), Qt::AlignCenter | Qt::TextWordWrap, i18n("No element selected"));
     } else if (Prefs::colorschemebox() == 2) { // The iconic view is the 3rd view (0,1,2,...)
         p.setBrush(palette().window().color());
         p.drawRect(rect());
 
         QString pathname = QStandardPaths::locate(QStandardPaths::AppLocalDataLocation, QStringLiteral("data/iconsets/"), QStandardPaths::LocateDirectory);
 
         int enumii = m_element->dataAsVariant(ChemicalDataObject::atomicNumber).toInt();
 
         QString filename = pathname + "school" + '/' + QString::number(enumii) + ".svg";
 
         QSvgRenderer svgrenderer;
         if (QFile::exists(filename) && svgrenderer.load(filename)) {
             QSize size = svgrenderer.defaultSize();
             size.scale(width(), height(), Qt::KeepAspectRatio);
 
             QRect bounds(QPoint(0, 0), size);
             bounds.moveCenter(QPoint(width() / 2, height() / 2));
             svgrenderer.render(&p, bounds);
         } else {
             p.drawText(rect(), Qt::AlignCenter | Qt::TextWordWrap, i18n("No graphic found"));
         }
     } else {
         const int h_t = 20; // height of the texts
 
         p.setPen(Qt::NoPen);
         p.setBrush(m_backgroundBrush);
         p.drawRect(rect());
         p.setBrush(Qt::black);
         p.setBrush(Qt::NoBrush);
 
         p.setPen(m_textColor);
 
         QFont fA = QFontDatabase::systemFont(QFontDatabase::GeneralFont);
         QFont fB = QFontDatabase::systemFont(QFontDatabase::GeneralFont);
         QFont fC = QFontDatabase::systemFont(QFontDatabase::GeneralFont);
 
         fA.setPointSize(fA.pointSize() + 20); // Huge font
         fA.setBold(true);
         fB.setPointSize(fB.pointSize() + 6); // Big font
         fC.setPointSize(fC.pointSize() + 4); // Big font
         fC.setBold(true);
         QFontMetrics fmA = QFontMetrics(fA);
         QFontMetrics fmB = QFontMetrics(fB);
 
         // coordinates for element symbol: near the center
         int xA = 4 * width() / 10;
         int yA = height() / 2;
 
         // coordinates for the atomic number: offset from element symbol to the upper left
         int xB = xA - fmB.boundingRect(m_element->dataAsString(ChemicalDataObject::atomicNumber)).width();
         int yB = yA + fmB.height() / 2;
 
         // Element Symbol
         p.setFont(fA);
         p.drawText(xA, yA, m_element->dataAsString(ChemicalDataObject::symbol));
 
         // Atomic number
         p.setFont(fB);
         p.drawText(xB, yB, m_element->dataAsString(ChemicalDataObject::atomicNumber));
 
         // Name and other data
         fC.setPointSize(h_t);
         p.setFont(fC);
 
         // Name
         p.drawText(margins, 0, width(), height(), Qt::AlignLeft, m_element->dataAsString(ChemicalDataObject::name));
 
         // TODO Oxidationstates -> not there yet
 
         // Mass
         QString massString = i18nc("For example '1.0079u', the mass of an element in units", "%1 u", m_element->dataAsString(ChemicalDataObject::mass));
         int size3 = KalziumUtils::maxSize(massString, rect(), fC, &p);
         fC.setPointSize(size3);
         p.setFont(fC);
         int offset = KalziumUtils::StringHeight(massString, fC, &p);
         p.drawText(-margins, height() - offset, width(), offset, Qt::AlignRight, massString);
     }
 
     p.end();
 }
 
 #include "moc_detailedgraphicaloverview.cpp"