Bug 1676057 - Test. r=spohl

Differential Revision: https://phabricator.services.mozilla.com/D96499
2020-11-10 22:15:25 +00:00 · 2020-11-10 22:15:25 +00:00 · 7d5661d677
--- a/widget/nsXPLookAndFeel.cpp
+++ b/widget/nsXPLookAndFeel.cpp
@ -98,6 +98,7 @@ nsLookAndFeelIntPref nsXPLookAndFeel::sIntPrefs[] = {
     6 /* fine and hover-capable pointer, i.e. mouse-type */},
    {"ui.allPointerCapabilities", IntID::AllPointerCapabilities, false,
     6 /* fine and hover-capable pointer, i.e. mouse-type */},
+    {"ui.scrollArrowStyle", IntID::ScrollArrowStyle, false, 0},
 };

 nsLookAndFeelFloatPref nsXPLookAndFeel::sFloatPrefs[] = {
--- a/widget/reftests/reftest.list
+++ b/widget/reftests/reftest.list
@ -4,3 +4,6 @@ skip-if(!cocoaWidget) == meter-vertical-native-style.html meter-vertical-native-
 == meter-fallback-default-style.html meter-fallback-default-style-ref.html
 load 664925.xhtml
 pref(apz.allow_zooming,true) pref(ui.useOverlayScrollbars,0) skip-if(!cocoaWidget) != scaled-scrollbar.html about:blank
+
+# Test that scrollbar buttons are inhibited on Linux using the non-native theme.
+skip-if(!gtkWidget) pref(widget.disable-native-theme-for-content,true) test-pref(ui.scrollArrowStyle,4097) ref-pref(ui.scrollArrowStyle,0) == scrollbar-buttons.html scrollbar-buttons.html
--- a/widget/reftests/scrollbar-buttons.html
+++ b/widget/reftests/scrollbar-buttons.html
@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<div style="width: 200px; height: 200px; overflow: scroll;">
+  <div style="width: 400px; height: 400px;"></div>
+</div>