File 0003-Compensate-for-global-scale-factor-when-us... of Package krfb

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File 0003-Compensate-for-global-scale-factor-when-using-xcb-fb.patch of Package krfb (Revision d2f37e81c3284e82df906ab537ab26d0)

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From a5656776a21f8b6f893431f9e18327a24ad1fa9c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20Br=C3=BCns?= <stefan.bruens@rwth-aachen.de>
Date: Thu, 13 Aug 2020 09:30:06 +0200
Subject: [PATCH 3/3] Compensate for global scale factor when using xcb fb
 plugin

The screen geometry is reported in device independent pixels, so it has
to be multiplied by the devicePixelRatio to get the size of the underlying
framebuffer. Otherwise, only the top left of the screen will be captured.

This matches the behavior of QScreen::grabWindow(...), which also
returns a QPixmap of the given size scaled by devicePixelRatio.
---
 framebuffers/xcb/xcb_framebuffer.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/framebuffers/xcb/xcb_framebuffer.cpp b/framebuffers/xcb/xcb_framebuffer.cpp
index 07569bf..626b3ad 100644
--- a/framebuffers/xcb/xcb_framebuffer.cpp
+++ b/framebuffers/xcb/xcb_framebuffer.cpp
@@ -163,11 +163,15 @@ XCBFrameBuffer::XCBFrameBuffer(WId winid, QObject *parent):
 
     QScreen *primaryScreen = QGuiApplication::primaryScreen();
     if (primaryScreen) {
+        qreal scaleFactor = primaryScreen->devicePixelRatio();
+        d->area = { primaryScreen->geometry().topLeft() * scaleFactor,
+                    primaryScreen->geometry().bottomRight() * scaleFactor };
         qCDebug(KRFB_FB_XCB) << "xcb framebuffer: Primary screen: " << primaryScreen->name()
                  << ", geometry: " << primaryScreen->geometry()
+                 << ", device scaling: " << scaleFactor
+                 << ", native size: " << d->area
                  << ", depth: " << primaryScreen->depth();
         //
-        d->area = primaryScreen->geometry();
     } else {
         qWarning() << "xcb framebuffer: ERROR: Failed to get application's primary screen info!";
         return;
-- 
2.28.0

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File 0003-Compensate-for-global-scale-factor-when-using-xcb-fb.patch of Package krfb (Revision d2f37e81c3284e82df906ab537ab26d0)

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