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Fix incorrect cursor position under display scaling

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Issue:
When running Krfb on a computer with display scaling, the remote cursor position shown in the VNC client is incorrect.

Change:
Multiply the remote cursor position by devicePixelRatio.

BUG: 466276
This commit is contained in:
Wendi Gan
2025-04-29 01:25:16 +08:00
parent 8b2a7710e5
commit 6379e0169d
1 changed files with 12 additions and 1 deletions
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13
krfb/framebuffer.cpp
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@@ -8,6 +8,8 @@
#include <config-krfb.h>
#include <QCursor>
#include <QGuiApplication>
#include <QScreen>
FrameBuffer::FrameBuffer(QObject *parent)
@@ -72,5 +74,14 @@ void FrameBuffer::stopMonitor()
QPoint FrameBuffer::cursorPosition()
{
return QCursor::pos();
QPoint cursorPos = QCursor::pos();
QScreen *primaryScreen = QGuiApplication::primaryScreen();
if (primaryScreen) {
qreal scaleFactor = primaryScreen->devicePixelRatio();
cursorPos.setX(qRound(cursorPos.x() * scaleFactor));
cursorPos.setY(qRound(cursorPos.y() * scaleFactor));
} else {
qWarning() << "cursorPosition: ERROR: Failed to get application's primary screen info!";
}
return cursorPos;
}