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2e869d8f3d
nsReflowStatus::IsEmpty() assertions are added after DISPLAY_REFLOW in the beginning of the Reflow(). A few Reflow() implementations have Reset() calls at the end which are left in place by this patch (with an explanatory comment added to each). These ending Reset()s are only needed for cases where a non-splittable frame passes its own nsReflowStatus to a child's reflow method. Just in case the child leaves a "not fully complete" value in the nsReflowStatus, the non-splittable parent frame must clear out the nsReflowStatus before returning, so that its own parent doesn't then try to split it. MozReview-Commit-ID: 6Jj3jfMAqj4 --HG-- extra : rebase_source : e1fe6a775ad97e16a6d7cc224634ff962ccb0fbf
90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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// vim:cindent:ts=2:et:sw=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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/* rendering object for CSS "::backdrop" */
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#include "nsBackdropFrame.h"
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#include "nsDisplayList.h"
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using namespace mozilla;
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NS_IMPL_FRAMEARENA_HELPERS(nsBackdropFrame)
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#ifdef DEBUG_FRAME_DUMP
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nsresult
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nsBackdropFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("Backdrop"), aResult);
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}
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#endif
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/* virtual */ nsStyleContext*
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nsBackdropFrame::GetParentStyleContext(nsIFrame** aProviderFrame) const
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{
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// Style context of backdrop pseudo-element does not inherit from
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// any element, per the Fullscreen API spec.
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*aProviderFrame = nullptr;
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return nullptr;
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}
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/* virtual */ void
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nsBackdropFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists)
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{
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DO_GLOBAL_REFLOW_COUNT_DSP("nsBackdropFrame");
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// We want this frame to always be there even if its display value is
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// none or contents so that we can respond to style change on it. To
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// support those values, we skip painting ourselves in those cases.
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auto display = StyleDisplay()->mDisplay;
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if (display == mozilla::StyleDisplay::None ||
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display == mozilla::StyleDisplay::Contents) {
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return;
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}
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DisplayBorderBackgroundOutline(aBuilder, aLists);
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}
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/* virtual */ LogicalSize
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nsBackdropFrame::ComputeAutoSize(gfxContext* aRenderingContext,
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WritingMode aWM,
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const LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const LogicalSize& aMargin,
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const LogicalSize& aBorder,
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const LogicalSize& aPadding,
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ComputeSizeFlags aFlags)
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{
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// Note that this frame is a child of the viewport frame.
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LogicalSize result(aWM, 0xdeadbeef, NS_UNCONSTRAINEDSIZE);
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if (aFlags & ComputeSizeFlags::eShrinkWrap) {
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result.ISize(aWM) = 0;
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} else {
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result.ISize(aWM) = aAvailableISize - aMargin.ISize(aWM) -
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aBorder.ISize(aWM) - aPadding.ISize(aWM);
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}
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return result;
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}
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/* virtual */ void
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nsBackdropFrame::Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus)
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{
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MarkInReflow();
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DO_GLOBAL_REFLOW_COUNT("nsBackdropFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
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MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
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// Note that this frame is a child of the viewport frame.
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WritingMode wm = aReflowInput.GetWritingMode();
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LogicalMargin borderPadding = aReflowInput.ComputedLogicalBorderPadding();
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nscoord isize = aReflowInput.ComputedISize() + borderPadding.IStartEnd(wm);
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nscoord bsize = aReflowInput.ComputedBSize() + borderPadding.BStartEnd(wm);
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aDesiredSize.SetSize(wm, LogicalSize(wm, isize, bsize));
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}
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