forked from mirrors/gecko-dev
de1f51fa10
Linux can also have high contrast (and mac, if you tweak prefs, but let's assume that doesn't happen), so no reason we shouldn't share this code. One related simplification while I was doing this code move is that I managed to remove the scrollbar "border" code. Turns out that Windows was overriding ComputeScrollbarColors so that border and track colors were always the same, and Linux was ignoring the border anyways, so with this we can simplfiy the implementation a bit (as the Linux scrollbar track / corner code can be shared with Windows now). Differential Revision: https://phabricator.services.mozilla.com/D107863
36 lines
1.3 KiB
C++
36 lines
1.3 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef ScrollbarUtil_h
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#define ScrollbarUtil_h
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#include "nsITheme.h"
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#include "nsNativeTheme.h"
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class ScrollbarUtil {
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public:
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static bool IsScrollbarWidthThin(mozilla::ComputedStyle* aStyle);
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static bool IsScrollbarWidthThin(nsIFrame* aFrame);
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// Returns the style for custom scrollbar if the scrollbar part frame should
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// use the custom drawing path, nullptr otherwise.
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//
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// Optionally the caller can pass a pointer to aDarkScrollbar for whether
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// custom scrollbar may be drawn due to dark background.
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static mozilla::ComputedStyle* GetCustomScrollbarStyle(
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nsIFrame* aFrame, bool* aDarkScrollbar = nullptr);
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static nscolor GetScrollbarTrackColor(nsIFrame* aFrame);
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static nscolor GetScrollbarThumbColor(nsIFrame* aFrame,
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mozilla::EventStates aEventStates);
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static mozilla::Maybe<nsITheme::Transparency> GetScrollbarPartTransparency(
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nsIFrame* aFrame, mozilla::StyleAppearance aAppearance);
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protected:
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ScrollbarUtil() = default;
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virtual ~ScrollbarUtil() = default;
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};
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#endif
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