gecko-dev/layout/base/ScrollbarStyles.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef ScrollbarStyles_h
#define ScrollbarStyles_h
#include <stdint.h>
#include "nsStyleConsts.h"
#include "mozilla/dom/WindowBinding.h"
namespace mozilla {
struct ScrollbarStyles
{
// Always one of NS_STYLE_OVERFLOW_SCROLL, NS_STYLE_OVERFLOW_HIDDEN,
// or NS_STYLE_OVERFLOW_AUTO.
uint8_t mHorizontal;
uint8_t mVertical;
// Always one of NS_STYLE_SCROLL_BEHAVIOR_AUTO or
// NS_STYLE_SCROLL_BEHAVIOR_SMOOTH
uint8_t mScrollBehavior;
ScrollbarStyles(uint8_t aH, uint8_t aV, uint8_t aB) : mHorizontal(aH),
mVertical(aV),
mScrollBehavior(aB) {}
ScrollbarStyles() {}
bool operator==(const ScrollbarStyles& aStyles) const {
return aStyles.mHorizontal == mHorizontal && aStyles.mVertical == mVertical &&
aStyles.mScrollBehavior == mScrollBehavior;
}
bool operator!=(const ScrollbarStyles& aStyles) const {
return aStyles.mHorizontal != mHorizontal || aStyles.mVertical != mVertical ||
aStyles.mScrollBehavior != mScrollBehavior;
}
bool IsHiddenInBothDirections() const {
return mHorizontal == NS_STYLE_OVERFLOW_HIDDEN &&
mVertical == NS_STYLE_OVERFLOW_HIDDEN;
}
bool IsSmoothScroll(dom::ScrollBehavior aBehavior) const {
return aBehavior == dom::ScrollBehavior::Smooth ||
(aBehavior == dom::ScrollBehavior::Auto &&
mScrollBehavior == NS_STYLE_SCROLL_BEHAVIOR_SMOOTH);
}
};
}
#endif