File indexing completed on 2024-05-12 15:28:21

 /***************************************************************************
     File                 : ThemesWidget.cpp
     Project              : LabPlot
     Description          : widget for selecting themes
     --------------------------------------------------------------------
     Copyright            : (C) 2016 Prakriti Bhardwaj (p_bhardwaj14@informatik.uni-kl.de)
     Copyright            : (C) 2016 Alexander Semke (alexander.semke@web.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, write to the Free Software           *
  *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
  *   Boston, MA  02110-1301  USA                                           *
  *                                                                         *
  ***************************************************************************/
 #include "ThemesWidget.h"
 #include "kdefrontend/ThemeHandler.h"
 
 #include <QApplication>
 #include <QDesktopWidget>
 #include <QFile>
 #include <QListWidgetItem>
 #include <QPainter>
 #include <QStandardItemModel>
 #include <QStandardPaths>
 
 #include <KLocalizedString>
 #include <KMessageBox>
 // #include <knewstuff3/downloaddialog.h>
 
 #include <cmath>
 
 /*!
     \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(3.0/2.54 * QApplication::desktop()->physicalDpiX());
     setIconSize(QSize(themeIconSize, themeIconSize));
     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
 
     //show preview pixmaps
     auto* mContentItemModel = new QStandardItemModel(this);
     QStringList themeList = ThemeHandler::themes();
     QStringList themeImgPathList = QStandardPaths::locateAll(QStandardPaths::DataLocation, "themes/screenshots/", QStandardPaths::LocateDirectory);
     if (themeImgPathList.isEmpty()) {
         delete mContentItemModel;
         return;
     }
 
     const QString& themeImgPath = themeImgPathList.first();
     QString tempPath;
 
     for (int i = 0; i < themeList.size(); ++i) {
         auto* listItem = new QStandardItem();
 
         tempPath = themeImgPath + themeList.at(i) + ".png";
         if (!QFile::exists(tempPath))
             tempPath = themeImgPath + "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
 //  QStandardItem* 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)
         emit themeSelected(QString()); //item with the string "None" was selected -> no theme
     else
         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(3.0/2.54 * QApplication::desktop()->physicalDpiX());
     QSize widgetSize(themeIconSize + style()->pixelMetric(QStyle::PM_ScrollBarExtent) + frameWidth*2,
                      3*(themeIconSize + fm.height() + 2* frameWidth) + fm.height() + frameWidth);
     setMinimumSize(widgetSize);
     setMaximumSize(widgetSize);
 }