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5f53a9bcdf
Differential Revision: https://phabricator.services.mozilla.com/D27782 --HG-- extra : moz-landing-system : lando
79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#include "mozilla/ScrollStyles.h"
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#include "mozilla/WritingModes.h"
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#include "nsStyleStruct.h" // for nsStyleDisplay & nsStyleBackground::Position
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namespace mozilla {
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void ScrollStyles::InitializeScrollSnapType(WritingMode aWritingMode,
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const nsStyleDisplay* aDisplay) {
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mScrollSnapTypeX = StyleScrollSnapStrictness::None;
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mScrollSnapTypeY = StyleScrollSnapStrictness::None;
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if (aDisplay->mScrollSnapType.strictness == StyleScrollSnapStrictness::None) {
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return;
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}
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switch (aDisplay->mScrollSnapType.axis) {
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case StyleScrollSnapAxis::X:
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mScrollSnapTypeX = aDisplay->mScrollSnapType.strictness;
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break;
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case StyleScrollSnapAxis::Y:
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mScrollSnapTypeY = aDisplay->mScrollSnapType.strictness;
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break;
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case StyleScrollSnapAxis::Block:
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if (aWritingMode.IsVertical()) {
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mScrollSnapTypeX = aDisplay->mScrollSnapType.strictness;
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} else {
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mScrollSnapTypeY = aDisplay->mScrollSnapType.strictness;
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}
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break;
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case StyleScrollSnapAxis::Inline:
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if (aWritingMode.IsVertical()) {
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mScrollSnapTypeY = aDisplay->mScrollSnapType.strictness;
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} else {
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mScrollSnapTypeX = aDisplay->mScrollSnapType.strictness;
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}
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break;
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case StyleScrollSnapAxis::Both:
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mScrollSnapTypeX = aDisplay->mScrollSnapType.strictness;
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mScrollSnapTypeY = aDisplay->mScrollSnapType.strictness;
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break;
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}
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}
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ScrollStyles::ScrollStyles(WritingMode aWritingMode, StyleOverflow aH,
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StyleOverflow aV, const nsStyleDisplay* aDisplay)
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: mHorizontal(aH),
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mVertical(aV),
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mScrollBehavior(aDisplay->mScrollBehavior),
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mOverscrollBehaviorX(aDisplay->mOverscrollBehaviorX),
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mOverscrollBehaviorY(aDisplay->mOverscrollBehaviorY),
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mScrollSnapPointsX(aDisplay->mScrollSnapPointsX),
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mScrollSnapPointsY(aDisplay->mScrollSnapPointsY),
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mScrollSnapDestinationX(aDisplay->mScrollSnapDestination.horizontal),
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mScrollSnapDestinationY(aDisplay->mScrollSnapDestination.vertical) {
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InitializeScrollSnapType(aWritingMode, aDisplay);
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}
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ScrollStyles::ScrollStyles(WritingMode aWritingMode,
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const nsStyleDisplay* aDisplay)
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: mHorizontal(aDisplay->mOverflowX),
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mVertical(aDisplay->mOverflowY),
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mScrollBehavior(aDisplay->mScrollBehavior),
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mOverscrollBehaviorX(aDisplay->mOverscrollBehaviorX),
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mOverscrollBehaviorY(aDisplay->mOverscrollBehaviorY),
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mScrollSnapPointsX(aDisplay->mScrollSnapPointsX),
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mScrollSnapPointsY(aDisplay->mScrollSnapPointsY),
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mScrollSnapDestinationX(aDisplay->mScrollSnapDestination.horizontal),
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mScrollSnapDestinationY(aDisplay->mScrollSnapDestination.vertical) {
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InitializeScrollSnapType(aWritingMode, aDisplay);
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}
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} // namespace mozilla
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