File indexing completed on 2024-11-17 05:01:08

 /*
     SPDX-FileCopyrightText: 2014 Weng Xuetian <wengxt@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 #include "screen.h"
 #include <QGuiApplication>
 #include <QScreen>
 #include <limits.h>
 
 int pointToRect(int x, int y, const QRect &r)
 {
     int dx = 0;
     int dy = 0;
     if (x < r.left()) {
         dx = r.left() - x;
     } else if (x > r.right()) {
         dx = x - r.right();
     }
     if (y < r.top()) {
         dy = r.top() - y;
     } else if (y > r.bottom()) {
         dy = y - r.bottom();
     }
     return dx + dy;
 }
 
 Screen::Screen(QObject *parent)
     : QObject(parent)
 {
 }
 
 Screen::~Screen()
 {
 }
 
 QScreen *screenForPoint(int x, int y)
 {
     const QList<QScreen *> screens = qApp->screens();
     QScreen *closestScreen = nullptr;
     int shortestDistance = INT_MAX;
     for (QScreen *screen : screens) {
         QRect rect = screen->availableGeometry();
         rect.setSize(rect.size() * screen->devicePixelRatio());
         int thisDistance = pointToRect(x, y, rect);
         if (thisDistance < shortestDistance) {
             shortestDistance = thisDistance;
             closestScreen = screen;
         }
     }
 
     if (!closestScreen) {
         closestScreen = qApp->primaryScreen();
     }
 
     return closestScreen;
 }
 
 QRect Screen::geometryForPoint(int x, int y)
 {
     auto closestScreen = screenForPoint(x, y);
 
     if (closestScreen) {
         auto rect = closestScreen->availableGeometry();
         rect.setSize(rect.size() * closestScreen->devicePixelRatio());
         return rect;
     }
     return QRect();
 }
 
 qreal Screen::devicePixelRatioForPoint(int x, int y)
 {
     auto closestScreen = screenForPoint(x, y);
 
     if (closestScreen) {
         return closestScreen->devicePixelRatio();
     }
     return 1.0;
 }