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-rw-r--r--src/core/render_widget_host_view_qt.cpp21
1 files changed, 18 insertions, 3 deletions
diff --git a/src/core/render_widget_host_view_qt.cpp b/src/core/render_widget_host_view_qt.cpp
index 6568398a..72abe04a 100644
--- a/src/core/render_widget_host_view_qt.cpp
+++ b/src/core/render_widget_host_view_qt.cpp
@@ -237,6 +237,19 @@ private:
float dpiScale;
};
+bool isAccessibilityEnabled() {
+ // On Linux accessibility is disabled by default due to performance issues,
+ // and can be re-enabled by setting the QTWEBENGINE_ENABLE_LINUX_ACCESSIBILITY environment
+ // variable. For details, see QTBUG-59922.
+#ifdef Q_OS_LINUX
+ static bool accessibility_enabled
+ = qEnvironmentVariableIsSet("QTWEBENGINE_ENABLE_LINUX_ACCESSIBILITY");
+#else
+ const bool accessibility_enabled = true;
+#endif
+ return accessibility_enabled;
+}
+
RenderWidgetHostViewQt::RenderWidgetHostViewQt(content::RenderWidgetHost* widget)
: m_host(content::RenderWidgetHostImpl::From(widget))
, m_gestureProvider(QtGestureProviderConfig(), this)
@@ -260,9 +273,11 @@ RenderWidgetHostViewQt::RenderWidgetHostViewQt(content::RenderWidgetHost* widget
{
m_host->SetView(this);
#ifndef QT_NO_ACCESSIBILITY
- QAccessible::installActivationObserver(this);
- if (QAccessible::isActive())
- content::BrowserAccessibilityStateImpl::GetInstance()->EnableAccessibility();
+ if (isAccessibilityEnabled()) {
+ QAccessible::installActivationObserver(this);
+ if (QAccessible::isActive())
+ content::BrowserAccessibilityStateImpl::GetInstance()->EnableAccessibility();
+ }
#endif // QT_NO_ACCESSIBILITY
auto* task_runner = base::ThreadTaskRunnerHandle::Get().get();
m_beginFrameSource.reset(new cc::DelayBasedBeginFrameSource(