зеркало из https://github.com/mozilla/gecko-dev.git
37 строки
1.3 KiB
C++
37 строки
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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