File indexing completed on 2024-06-02 03:49:42

 /*
     File                 : ThemesWidget.cpp
     Project              : LabPlot
     Description          : widget for selecting themes
     --------------------------------------------------------------------
     SPDX-FileCopyrightText: 2016 Prakriti Bhardwaj <p_bhardwaj14@informatik.uni-kl.de>
     SPDX-FileCopyrightText: 2016 Alexander Semke <alexander.semke@web.de>
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "ThemesWidget.h"
 #include "kdefrontend/ThemeHandler.h"
 
 #include <KLocalizedString>
 #include <KMessageBox>
 // #include <knewstuff3/downloaddialog.h>
 
 #include <QApplication>
 #include <QFile>
 #include <QListWidgetItem>
 #include <QPainter>
 #include <QScreen>
 #include <QStandardItemModel>
 #include <QStandardPaths>
 
 #include <cmath>
 
 #include <gsl/gsl_const_cgs.h>
 
 /*!
     \class ThemesWidget
     \brief Widget for showing theme previews and for selecting a theme.
 
     \ingroup kdefrontend
  */
 ThemesWidget::ThemesWidget(QWidget* parent)
     : QListView(parent) {
     setSelectionMode(QAbstractItemView::SingleSelection);
     setWordWrap(true);
     setViewMode(QListWidget::IconMode);
     setResizeMode(QListWidget::Adjust);
     setDragDropMode(QListView::NoDragDrop);
 
     // make the icon 3x3cm big and show two of them in the height
     static const int themeIconSize = std::ceil(3.0 / GSL_CONST_CGS_INCH * QApplication::primaryScreen()->physicalDotsPerInchX());
     setIconSize(QSize(themeIconSize, themeIconSize));
     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
 
     // show preview pixmaps
     auto* mContentItemModel = new QStandardItemModel(this);
     auto themeList = ThemeHandler::themes();
     auto themeImgPathList = QStandardPaths::locateAll(QStandardPaths::AppDataLocation, QStringLiteral("themes/screenshots/"), QStandardPaths::LocateDirectory);
     if (themeImgPathList.isEmpty()) {
         delete mContentItemModel;
         return;
     }
 
     const QString& themeImgPath = themeImgPathList.first();
 
     for (int i = 0; i < themeList.size(); ++i) {
         auto* listItem = new QStandardItem();
 
         QString tempPath = themeImgPath + themeList.at(i) + QStringLiteral(".png");
         if (!QFile::exists(tempPath))
             tempPath = themeImgPath + QStringLiteral("Unavailable.png");
 
         listItem->setIcon(QIcon(QPixmap(tempPath)));
         if (themeList.at(i) == QLatin1String("Default")) {
             listItem->setText(i18n("Default"));
             mContentItemModel->insertRow(0, listItem);
         } else {
             listItem->setText(themeList.at(i));
             mContentItemModel->appendRow(listItem);
         }
     }
 
     // adding download themes option
     // TODO: activate this later
     //  auto* listItem = new QStandardItem();
     //  listItem->setIcon(QIcon::fromTheme("get-hot-new-stuff"));
     //  listItem->setText("Download Themes");
     //  listItem->setData("file_download_theme", Qt::UserRole);
     //  mContentItemModel->appendRow(listItem);
 
     QListView::setModel(mContentItemModel);
 
     // SLOTS
     connect(this, &ThemesWidget::clicked, this, &ThemesWidget::applyClicked);
 }
 
 void ThemesWidget::applyClicked(const QModelIndex& index) {
     const QString& themeName = index.data(Qt::DisplayRole).toString();
 
     // TODO: activate this later
     //  if (themeName == "file_download_theme")
     //      this->downloadThemes();
     //  else
 
     if (index.row() == 0)
         Q_EMIT themeSelected(QString()); // item with the string "None" was selected -> no theme
     else
         Q_EMIT themeSelected(themeName);
 }
 
 // TODO: activate this later
 //  void ThemesWidget::downloadThemes() {
 //      KNS3::DownloadDialog dialog("labplot2_themes.knsrc", this);
 //      dialog.exec();
 //      foreach (const KNS3::Entry& e, dialog.changedEntries()) {
 //          kDebug() << "Changed Entry: " << e.name();
 //      }
 //  }
 
 void ThemesWidget::setFixedMode() {
     // resize the widget to show three items only
     int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
     QFont font;
     QFontMetrics fm(font);
     static const int themeIconSize = std::ceil(3.0 / GSL_CONST_CGS_INCH * QApplication::primaryScreen()->physicalDotsPerInchX());
     QSize widgetSize(themeIconSize + style()->pixelMetric(QStyle::PM_ScrollBarExtent) + frameWidth * 2,
                      3 * (themeIconSize + fm.height() + 2 * frameWidth) + fm.height() + frameWidth);
     setMinimumSize(widgetSize);
     setMaximumSize(widgetSize);
 }