File indexing completed on 2024-05-12 16:44:05

 /*
     SPDX-FileCopyrightText: 2021      Thomas Baumgart <tbaumgart@kde.org>
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "popuppositioner.h"
 
 // ----------------------------------------------------------------------------
 // QT Includes
 
 #include <QApplication>
 #include <QDesktopWidget>
 #include <QScreen>
 #include <QWidget>
 #include <QRect>
 
 // ----------------------------------------------------------------------------
 // KDE Includes
 
 // ----------------------------------------------------------------------------
 // Project Includes
 
 
 PopupPositioner::PopupPositioner(QWidget* baseWidget, QWidget* popupWidget, Anchor anchor)
 {
     // the following two lines use deprecated functions. I have not yet
     // found out how to obtain the same information with newer versions (> 5.14)
     auto screenNr = QApplication::desktop()->screenNumber(baseWidget);
     const auto screenRect = QApplication::desktop()->screenGeometry(screenNr);
 
     auto p = baseWidget->mapToGlobal(QPoint());
     // align the y coordinate
     switch(anchor) {
     case BottemLeft:
     case BottomRight:
         if (p.y() + baseWidget->height() + popupWidget->height() > screenRect.bottomLeft().y()) {
             p.setY(p.y() - popupWidget->height());
         } else {
             p.setY(p.y() + baseWidget->height());
         }
         break;
     case TopLeft:
     case TopRight:
         if (p.y() - popupWidget->height() < screenRect.topLeft().y()) {
             p.setY(p.y() + baseWidget->height());
         } else {
             p.setY(p.y() - popupWidget->height());
         }
         break;
     }
 
     // align the x coordinate
     switch(anchor) {
     case BottemLeft:
     case TopLeft:
         // if left aligning causes the widget to leave the screen area
         // then align it to the right edge of the base widget instead
         if (p.x() + popupWidget->width() > screenRect.topRight().x()) {
             p.setX(p.x() + baseWidget->width() - popupWidget->width());
         }
         break;
 
     case BottomRight:
     case TopRight:
         // align to the right
         p.setX(p.x() + baseWidget->width() - popupWidget->width());
 
         // if right aligning causes the widget to leave the screen area
         // then align it to the left edge of the base widget
         if (p.x() < screenRect.topLeft().x()) {
             p.setX(baseWidget->x());
         }
         break;
     }
 
     // if the popup widget leaves the screen to the left
     // then align it to the left side of the screen
     if (p.x() < screenRect.topLeft().x()) {
         p.setX(screenRect.topLeft().x());
     }
     // if the popup widget leaves the screen to the right
     // then align its right edge to the right side of the screen
     if (p.x() + popupWidget->width() > screenRect.topRight().x()) {
         p.setX(screenRect.topRight().x() - popupWidget->width());
     }
 
     // move the popup widget to its location
     popupWidget->move(p);
 }