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Fix Design tab not painting on hardware GL after a page switch

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request_repaint() only invalidates the canvas (Refresh()) on the hardware-GL
path and relies on a wxEVT_PAINT to follow. When the notebook re-shows the
Design page, that invalidation is issued mid-show and dropped: no paint event
arrives, the canvas never renders, and the pane stays blank until another tab
switch forces an expose. Software GL renders directly, so it never showed there.

force_repaint() defers past the show, then Refresh() + Update() for a
synchronous paint. Called from on_tab_shown().

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BVzKmX6Y1aEteit1HTXG4Q
This commit is contained in:
Tommaso Bianchi
2026-07-14 23:26:58 +02:00
co-authored by Claude Opus 4.8
parent 343a0439f1
commit 6d9368276c
3 changed files with 20 additions and 0 deletions
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src/slic3r/GUI/DesignPanel.cpp
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@@ -3196,6 +3196,7 @@ void DesignPanel::on_tab_shown()
}
}
update_reference_planes(); // entering the Design tab: show the XY/XZ/YZ planes if no object yet
if (m_viewport) m_viewport->force_repaint(); // the page was just re-shown: paint it for real
}
void DesignPanel::load_recipe(const std::string& blob)