File indexing completed on 2024-04-21 05:46:37

 // SPDX-License-Identifier: GPL-3.0-or-later
 /*
   Copyright 2017, 2018 Martin Koller, kollix@aon.at
 
   This file is part of liquidshell.
 
   liquidshell 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 3 of the License, or
   (at your option) any later version.
 
   liquidshell 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 liquidshell.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include <Pager.hxx>
 #include <PagerButton.hxx>
 #include <DesktopPanel.hxx>
 #include <KWinCompat.hxx>
 
 #include <QGridLayout>
 #include <QButtonGroup>
 #include <QPushButton>
 #include <QX11Info>
 #include <QAction>
 #include <QWheelEvent>
 #include <QDebug>
 
 #include <KLocalizedString>
 #include <KCMultiDialog>
 #include <KConfig>
 #include <KConfigGroup>
 #include <KPluginMetaData>
 #include <kcmutils_version.h>
 #include <netwm.h>
 
 //--------------------------------------------------------------------------------
 
 Pager::Pager(DesktopPanel *parent)
   : QWidget(parent)
 {
   group = new QButtonGroup(this);
 
   QGridLayout *grid = new QGridLayout(this);
   grid->setSpacing(2);
   grid->setContentsMargins(QMargins());
 
   connect(KWinCompat::self(), &KWinCompat::numberOfDesktopsChanged, this, &Pager::fill);
 
   connect(KWinCompat::self(), &KWinCompat::currentDesktopChanged,
           [this]()
           {
             if ( KWinCompat::currentDesktop() <= buttons.count() )
               buttons[KWinCompat::currentDesktop() - 1]->setChecked(true);
           }
          );
 
   connect(parent, &DesktopPanel::rowsChanged, this, &Pager::fill);
 
   KConfig config;
   KConfigGroup group = config.group("Pager");
   if ( !group.hasKey("showIcons") )  // create config entry so that one knows it exists
     group.writeEntry("showIcons", true);
 
   showIcons  = group.readEntry("showIcons", true);
 
   fill();
 
   QAction *action = new QAction(this);
   action->setIcon(QIcon::fromTheme("configure"));
   action->setText(i18n("Configure Virtual Desktops..."));
   addAction(action);
   connect(action, &QAction::triggered,
           [this]()
           {
             auto dialog = new KCMultiDialog(parentWidget());
             dialog->setAttribute(Qt::WA_DeleteOnClose);
             dialog->setWindowTitle(i18n("Configure Virtual Desktops"));
 
 #if KCMUTILS_VERSION >= QT_VERSION_CHECK(5, 85, 0)
             KPluginMetaData data("plasma/kcms/systemsettings/kcm_kwin_virtualdesktops");
 
             if ( !data.isValid() )
               data = KPluginMetaData::findPluginById("kcms", "kcm_kwin_virtualdesktops");
 
             if ( data.isValid() )
               dialog->addModule(data);
 #else
             {
               KCModuleInfo module("kcm_kwin_virtualdesktops");
               if ( module.service() )
                 dialog->addModule("kcm_kwin_virtualdesktops");
               else
                 dialog->addModule("desktop");  // in older KDE versions
             }
 #endif
 
             dialog->adjustSize();
             dialog->show();
           }
          );
   setContextMenuPolicy(Qt::ActionsContextMenu);
 }
 
 //--------------------------------------------------------------------------------
 
 void Pager::fill()
 {
   qDeleteAll(buttons);
   buttons.clear();
 
 #if QT_VERSION >= QT_VERSION_CHECK(5,15,0)
   NETRootInfo ri(QX11Info::connection(), NET::Property(), NET::WM2DesktopLayout);
 #else
   NETRootInfo ri(QX11Info::connection(), 0, NET::WM2DesktopLayout);
 #endif
 
   int row = 0, col = 0;
   const int MAX_COLUMNS = std::max(1, ri.desktopLayoutColumnsRows().width());
 
   for (int i = 1; i <= KWinCompat::numberOfDesktops(); i++)
   {
     PagerButton *b = new PagerButton(i, qobject_cast<DesktopPanel *>(parentWidget()), showIcons);
 
     b->setCheckable(true);
     b->setFocusPolicy(Qt::NoFocus);
     group->addButton(b);
     buttons.append(b);
 
     if ( i == KWinCompat::currentDesktop() )
       b->setChecked(true);
 
     connect(b, &PagerButton::clicked, this, &Pager::changeDesktop);
 
     static_cast<QGridLayout *>(layout())->addWidget(b, row, col);
     col = (col + 1) % MAX_COLUMNS;
     if ( col == 0 ) row++;
   }
 }
 
 //--------------------------------------------------------------------------------
 
 void Pager::changeDesktop(bool checked)
 {
   if ( !checked )
     return;
 
   int desktopNum = qobject_cast<PagerButton *>(sender())->getDesktop();
 
   if ( KWinCompat::currentDesktop() == desktopNum )
     KWindowSystem::setShowingDesktop(!KWindowSystem::showingDesktop());
   else
     KWinCompat::setCurrentDesktop(desktopNum);
 }
 
 //--------------------------------------------------------------------------------
 
 void Pager::wheelEvent(QWheelEvent *event)
 {
   int desktopNum = KWinCompat::currentDesktop() - 1 + KWinCompat::numberOfDesktops();
 
   if ( event->angleDelta().y() > 0 )
     desktopNum++;
   else
     desktopNum--;
 
   KWinCompat::setCurrentDesktop((desktopNum % KWinCompat::numberOfDesktops()) + 1);
 }
 
 //--------------------------------------------------------------------------------