From 2ec58eac25e2c58b84d96ada85ef727d4a6685ef Mon Sep 17 00:00:00 2001
From: Andre Hartmann <aha_1980@gmx.de>
Date: Mon, 15 Jul 2019 19:59:30 +0200
Subject: [PATCH] OutputWindow: Fix freeze when zooming out very far

Task-number: QTCREATORBUG-22721
Change-Id: I5a3bc8d1aa677614bd7fdc5e5094b589721e378d
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
---
 src/plugins/coreplugin/outputwindow.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/plugins/coreplugin/outputwindow.cpp b/src/plugins/coreplugin/outputwindow.cpp
index e89f999a478..6c33b8dafe2 100644
--- a/src/plugins/coreplugin/outputwindow.cpp
+++ b/src/plugins/coreplugin/outputwindow.cpp
@@ -232,6 +232,12 @@ void OutputWindow::wheelEvent(QWheelEvent *e)
     if (d->zoomEnabled) {
         if (e->modifiers() & Qt::ControlModifier) {
             float delta = e->angleDelta().y() / 120.f;
+
+            // Workaround for QTCREATORBUG-22721, remove when properly fixed in Qt
+            const float newSize = float(font().pointSizeF()) + delta;
+            if (delta < 0.f && newSize < 4.f)
+                return;
+
             zoomInF(delta);
             emit wheelZoom();
             return;