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;
}
#include "moc_screen.cpp"
