Help viewer: Add option for scroll wheel zooming

Fixes: QTCREATORBUG-14154
Change-Id: Ia6c4aedb78954614477f0228ba82c4dc476a2525
Reviewed-by: Leena Miettinen <[email protected]>
Reviewed-by: David Schulz <[email protected]>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/plugins/help/helpviewer.h b/src/plugins/help/helpviewer.h
index 0a24fb7222d..d502d7c6640 100644
--- a/src/plugins/help/helpviewer.h
+++ b/src/plugins/help/helpviewer.h
@@ -57,6 +57,9 @@ public:
     virtual qreal scale() const = 0;
     virtual void setScale(qreal scale) = 0;
 
+    void setScrollWheelZoomingEnabled(bool enabled);
+    bool isScrollWheelZoomingEnabled() const;
+
     virtual QString title() const = 0;
 
     virtual QUrl source() const = 0;
@@ -105,12 +108,15 @@ signals:
     void externalPageRequested(const QUrl &url);
 
 protected:
+    void wheelEvent(QWheelEvent *event) override;
+
     void slotLoadStarted();
     void slotLoadFinished();
 
     void restoreOverrideCursor();
 
     Actions m_visibleActions;
+    bool m_scrollWheelZoomingEnabled = true;
     int m_loadOverrideStack = 0;
 };