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Danny Milosavljevic
b2ec280cb7
* gnu/packages/patches/qtwayland-5.15.18-0056-redraw-hidpi.patch: New file. * gnu/local.mk (dist_patch_DATA): Register it. * gnu/packages/qt.scm (qtwayland-5)[source]: Use it. Change-Id: Iaa2c85b7f17728836465f1ae50f65a1b8dea60ef Merges: #7127
36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
From 30ed491e1ea190591260f1b73b9dad2a5926e113 Mon Sep 17 00:00:00 2001
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From: Danny Milosavljevic <dannym@friendly-machines.com>
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Date: Mon, 16 Feb 2026 00:00:00 +0100
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Subject: [PATCH] Client: Force full repaint after output scale change
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See: <https://invent.kde.org/qt/qt/qtwayland/-/merge_requests/89>
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In handleScreensChanged(), after ensureSize(), call
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requestUpdate() and sendExposeEvent() for the entire window.
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This forces a full repaint at the new scale.
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---
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src/client/qwaylandwindow.cpp | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/src/client/qwaylandwindow.cpp b/src/client/qwaylandwindow.cpp
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index 7c338d27a..a8d5fe2e4 100644
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--- a/src/client/qwaylandwindow.cpp
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+++ b/src/client/qwaylandwindow.cpp
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@@ -1075,6 +1075,14 @@ void QWaylandWindow::handleScreensChanged()
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if (mSurface && mDisplay->compositorVersion() >= 3)
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mSurface->set_buffer_scale(mScale);
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ensureSize();
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+ // The buffer was recreated at the new scale but no widgets
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+ // are marked dirty, so it is uninitialized (black). Force a
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+ // full repaint by requesting an update and sending an expose
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+ // event for the entire window.
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+ if (isExposed()) {
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+ window()->requestUpdate();
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+ sendExposeEvent(QRect(QPoint(), geometry().size()));
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+ }
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}
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}
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--
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GitLab
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