зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
1.6 KiB
C++
60 строки
1.6 KiB
C++
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/* -*- Mode: C++; tab-width: 20; 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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#include "DisplayItemClipChain.h"
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namespace mozilla {
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/* static */ const DisplayItemClip*
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DisplayItemClipChain::ClipForASR(const DisplayItemClipChain* aClipChain, const ActiveScrolledRoot* aASR)
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{
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while (aClipChain && !ActiveScrolledRoot::IsAncestor(aClipChain->mASR, aASR)) {
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aClipChain = aClipChain->mParent;
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}
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return (aClipChain && aClipChain->mASR == aASR) ? &aClipChain->mClip : nullptr;
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}
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bool
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DisplayItemClipChain::Equal(const DisplayItemClipChain* aClip1, const DisplayItemClipChain* aClip2)
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{
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if (aClip1 == aClip2) {
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return true;
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}
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if (!aClip1 || !aClip2) {
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return false;
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}
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return aClip1->mASR == aClip2->mASR &&
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aClip1->mClip == aClip2->mClip &&
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Equal(aClip1->mParent, aClip2->mParent);
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}
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/* static */ nsCString
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DisplayItemClipChain::ToString(const DisplayItemClipChain* aClipChain)
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{
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nsAutoCString str;
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for (auto* sc = aClipChain; sc; sc = sc->mParent) {
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if (sc->mASR) {
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str.AppendPrintf("<%s> [0x%p]", sc->mClip.ToString().get(), sc->mASR->mScrollableFrame);
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} else {
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str.AppendPrintf("<%s> [root asr]", sc->mClip.ToString().get());
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}
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if (sc->mParent) {
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str.Append(", ");
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}
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}
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return str;
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}
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bool
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DisplayItemClipChain::HasRoundedCorners() const
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{
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return mClip.GetRoundedRectCount() > 0 || (mParent && mParent->HasRoundedCorners());
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}
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} // namespace mozilla
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