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From 6b400e3147dcfd8cc3a393ace1bd118c93762e0c Mon Sep 17 00:00:00 2001
From: Eirik Aavitsland <eirik.aavitsland@qt.io>
Date: Fri, 23 Jul 2021 15:53:56 +0200
Subject: [PATCH] Improve fix for avoiding huge number of tiny dashes
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Some pathological cases were not caught by the previous fix.
Fixes: QTBUG-95239
Pick-to: 6.2 6.1 5.15
Change-Id: I0337ee3923ff93ccb36c4d7b810a9c0667354cc5
Reviewed-by: Robert Löhning <robert.loehning@qt.io>
---
src/gui/painting/qpaintengineex.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/gui/painting/qpaintengineex.cpp b/src/gui/painting/qpaintengineex.cpp
index 9fe51082..22e1b18f 100644
--- a/src/gui/painting/qpaintengineex.cpp
+++ b/src/gui/painting/qpaintengineex.cpp
@@ -426,7 +426,7 @@ void QPaintEngineEx::stroke(const QVectorPath &path, const QPen &inPen)
patternLength *= pw;
if (qFuzzyIsNull(patternLength)) {
pen.setStyle(Qt::NoPen);
- } else if (extent / patternLength > 10000) {
+ } else if (qFuzzyIsNull(extent) || extent / patternLength > 10000) {
// approximate stream of tiny dashes with semi-transparent solid line
pen.setStyle(Qt::SolidLine);
QColor color(pen.color());