Changeset 241243 in webkit


Ignore:
Timestamp:
Feb 9, 2019 12:37:03 PM (5 years ago)
Author:
Alan Bujtas
Message:

[LFC][IFC] Add intrinsic width support for basic inline containers
​https://bugs.webkit.org/show_bug.cgi?id=194473

Reviewed by Antti Koivisto.

Source/WebCore:

Preferred width computation logic is very similar to normal layout.
One of the main difference is that the preferred width codepath does not provide valid containing block width.
This patch implement basic inline container support by passing nullopt containing block width in UsedHorizontalValues.

  • layout/inlineformatting/InlineFormattingContext.cpp:

(WebCore::Layout::InlineFormattingContext::layout const):
(WebCore::Layout::InlineFormattingContext::instrinsicWidthConstraints const):
(WebCore::Layout::InlineFormattingContext::computeBorderAndPadding const):
(WebCore::Layout::InlineFormattingContext::computeMarginBorderAndPadding const):
(WebCore::Layout::InlineFormattingContext::computeWidthAndMargin const):
(WebCore::Layout::InlineFormattingContext::layoutFormattingContextRoot const):
(WebCore::Layout::InlineFormattingContext::computeWidthAndHeightForReplacedInlineBox const):

  • layout/inlineformatting/InlineFormattingContext.h:

Tools:

Expand tests coverage (11 new tests -> 798)

  • LayoutReloaded/misc/LFC-passing-tests.txt: not sure why run-singly keeps producing different ordering.
Location:
trunk
Files:
5 edited

Legend:

Unmodified
Added
Removed

  • trunk/Source/WebCore/ChangeLog

    r241231 r241243  
     12019-02-09  Zalan Bujtas  <zalan@apple.com>
     2
     3        [LFC][IFC] Add intrinsic width support for basic inline containers
     4        https://bugs.webkit.org/show_bug.cgi?id=194473
     5
     6        Reviewed by Antti Koivisto.
     7
     8        Preferred width computation logic is very similar to normal layout.
     9        One of the main difference is that the preferred width codepath does not provide valid containing block width.
     10        This patch implement basic inline container support by passing nullopt containing block width in UsedHorizontalValues.
     11
     12        * layout/inlineformatting/InlineFormattingContext.cpp:
     13        (WebCore::Layout::InlineFormattingContext::layout const):
     14        (WebCore::Layout::InlineFormattingContext::instrinsicWidthConstraints const):
     15        (WebCore::Layout::InlineFormattingContext::computeBorderAndPadding const):
     16        (WebCore::Layout::InlineFormattingContext::computeMarginBorderAndPadding const):
     17        (WebCore::Layout::InlineFormattingContext::computeWidthAndMargin const):
     18        (WebCore::Layout::InlineFormattingContext::layoutFormattingContextRoot const):
     19        (WebCore::Layout::InlineFormattingContext::computeWidthAndHeightForReplacedInlineBox const):
     20        * layout/inlineformatting/InlineFormattingContext.h:
     21
    1222019-02-08  Myles C. Maxfield  <mmaxfield@apple.com>
    223

  • trunk/Source/WebCore/layout/inlineformatting/InlineFormattingContext.cpp

    r241194 r241243  
    7272    LOG_WITH_STREAM(FormattingContextLayout, stream << "[Start] -> inline formatting context -> formatting root(" << &root() << ")");
    7373    auto& root = downcast<Container>(this->root());
     74    auto usedValues = UsedHorizontalValues { layoutState().displayBoxForLayoutBox(root).contentBoxWidth(), { }, { } };
    7475    auto* layoutBox = root.firstInFlowOrFloatingChild();
    7576    // Compute width/height for non-text content and margin/border/padding for inline containers.
    7677    while (layoutBox) {
    7778        if (layoutBox->establishesFormattingContext())
    78             layoutFormattingContextRoot(*layoutBox);
     79            layoutFormattingContextRoot(*layoutBox, usedValues);
    7980        else if (is<Container>(*layoutBox))
    80             computeMarginBorderAndPadding(downcast<InlineContainer>(*layoutBox));
     81            computeMarginBorderAndPadding(downcast<InlineContainer>(*layoutBox), usedValues);
    8182        else if (layoutBox->isReplaced())
    82             computeWidthAndHeightForReplacedInlineBox(*layoutBox);
     83            computeWidthAndHeightForReplacedInlineBox(*layoutBox, usedValues);
    8384        layoutBox = nextInPreOrder(*layoutBox, root);
    8485    }
    … …  
    9091}
    9192
    92 void InlineFormattingContext::computeMarginBorderAndPadding(const InlineContainer& inlineContainer) const
     93FormattingContext::InstrinsicWidthConstraints InlineFormattingContext::instrinsicWidthConstraints() const
     94{
     95    ASSERT(!layoutState().formattingStateForBox(root()).instrinsicWidthConstraints(root()));
     96    ASSERT(is<Container>(root()));
     97
     98    auto& layoutState = this->layoutState();
     99    auto& root = downcast<Container>(this->root());
     100
     101    auto usedValues = UsedHorizontalValues { { }, { }, { } };
     102    auto* layoutBox = root.firstInFlowOrFloatingChild();
     103    while (layoutBox) {
     104        if (layoutBox->establishesFormattingContext() || layoutBox->isReplaced())
     105            ASSERT_NOT_IMPLEMENTED_YET();
     106        else if (is<Container>(*layoutBox))
     107            computeMarginBorderAndPadding(downcast<InlineContainer>(*layoutBox), usedValues);
     108        layoutBox = nextInPreOrder(*layoutBox, root);
     109    }
     110
     111    InlineRunProvider inlineRunProvider;
     112    collectInlineContent(inlineRunProvider);
     113
     114    auto maximumLineWidth = [&](auto availableWidth) {
     115        LayoutUnit maxContentLogicalRight;
     116        auto lineBreaker = InlineLineBreaker { layoutState, formattingState().inlineContent(), inlineRunProvider.runs() };
     117        LayoutUnit lineLogicalRight;
     118        while (auto run = lineBreaker.nextRun(lineLogicalRight, availableWidth, !lineLogicalRight)) {
     119            if (run->position == InlineLineBreaker::Run::Position::LineBegin)
     120                lineLogicalRight = 0;
     121            lineLogicalRight += run->width;
     122
     123            maxContentLogicalRight = std::max(maxContentLogicalRight, lineLogicalRight);
     124        }
     125        return maxContentLogicalRight;
     126    };
     127
     128    auto instrinsicWidthConstraints = FormattingContext::InstrinsicWidthConstraints { maximumLineWidth(0), maximumLineWidth(LayoutUnit::max()) };
     129    layoutState.formattingStateForBox(root).setInstrinsicWidthConstraints(root, instrinsicWidthConstraints);
     130    return instrinsicWidthConstraints;
     131}
     132
     133void InlineFormattingContext::computeBorderAndPadding(const Box& layoutBox, UsedHorizontalValues usedValues) const
     134{
     135    auto& displayBox = layoutState().displayBoxForLayoutBox(layoutBox);
     136    displayBox.setBorder(Geometry::computedBorder(layoutBox));
     137    displayBox.setPadding(Geometry::computedPadding(layoutBox, usedValues));
     138}
     139
     140void InlineFormattingContext::computeMarginBorderAndPadding(const InlineContainer& inlineContainer, UsedHorizontalValues usedValues) const
    93141{
    94142    // Non-replaced, non-formatting root containers (<span></span>) don't have width property -> non width computation.
    … …  
    96144    ASSERT(!inlineContainer.establishesFormattingContext());
    97145
    98     computeBorderAndPadding(inlineContainer);
     146    computeBorderAndPadding(inlineContainer, usedValues);
    99147    auto& displayBox = layoutState().displayBoxForLayoutBox(inlineContainer);
    100     auto containingBlockWidth = layoutState().displayBoxForLayoutBox(*inlineContainer.containingBlock()).contentBoxWidth();
    101     auto computedHorizontalMargin = Geometry::computedHorizontalMargin(inlineContainer, UsedHorizontalValues { containingBlockWidth, { }, { } });
     148    auto computedHorizontalMargin = Geometry::computedHorizontalMargin(inlineContainer, usedValues);
    102149    displayBox.setHorizontalComputedMargin(computedHorizontalMargin);
    103150    displayBox.setHorizontalMargin({ computedHorizontalMargin.start.valueOr(0), computedHorizontalMargin.end.valueOr(0) });
    104151}
    105152
    106 void InlineFormattingContext::computeWidthAndMargin(const Box& layoutBox) const
     153void InlineFormattingContext::computeWidthAndMargin(const Box& layoutBox, UsedHorizontalValues usedValues) const
    107154{
    108155    auto& layoutState = this->layoutState();
    109     auto containingBlockWidth = layoutState.displayBoxForLayoutBox(*layoutBox.containingBlock()).contentBoxWidth();
    110 
    111156    WidthAndMargin widthAndMargin;
    112     auto usedValues = UsedHorizontalValues { containingBlockWidth, { }, { } };
    113157    if (layoutBox.isFloatingPositioned())
    114158        widthAndMargin = Geometry::floatingWidthAndMargin(layoutState, layoutBox, usedValues);
    … …  
    145189}
    146190
    147 void InlineFormattingContext::layoutFormattingContextRoot(const Box& root) const
     191void InlineFormattingContext::layoutFormattingContextRoot(const Box& root, UsedHorizontalValues usedValues) const
    148192{
    149193    ASSERT(root.isFloatingPositioned() || root.isInlineBlockBox());
    150194
    151     computeBorderAndPadding(root);
    152     computeWidthAndMargin(root);
     195    computeBorderAndPadding(root, usedValues);
     196    computeWidthAndMargin(root, usedValues);
    153197    // Swich over to the new formatting context (the one that the root creates).
    154198    auto formattingContext = layoutState().createFormattingContext(root);
    … …  
    160204}
    161205
    162 void InlineFormattingContext::computeWidthAndHeightForReplacedInlineBox(const Box& layoutBox) const
     206void InlineFormattingContext::computeWidthAndHeightForReplacedInlineBox(const Box& layoutBox, UsedHorizontalValues usedValues) const
    163207{
    164208    ASSERT(!layoutBox.isContainer());
    … …  
    166210    ASSERT(layoutBox.replaced());
    167211
    168     computeBorderAndPadding(layoutBox);
    169     computeWidthAndMargin(layoutBox);
     212    computeBorderAndPadding(layoutBox, usedValues);
     213    computeWidthAndMargin(layoutBox, usedValues);
    170214    computeHeightAndMargin(layoutBox);
    171215}
    … …  
    293337}
    294338
    295 FormattingContext::InstrinsicWidthConstraints InlineFormattingContext::instrinsicWidthConstraints() const
    296 {
    297     auto& formattingStateForRoot = layoutState().formattingStateForBox(root());
    298     if (auto instrinsicWidthConstraints = formattingStateForRoot.instrinsicWidthConstraints(root()))
    299         return *instrinsicWidthConstraints;
    300 
    301     auto& inlineFormattingState = formattingState();
    302     InlineRunProvider inlineRunProvider;
    303     collectInlineContent(inlineRunProvider);
    304 
    305     // Compute width for non-text content.
    306     for (auto& inlineRun : inlineRunProvider.runs()) {
    307         if (inlineRun.isText())
    308             continue;
    309 
    310         computeWidthAndMargin(inlineRun.inlineItem().layoutBox());
    311     }
    312 
    313     auto maximumLineWidth = [&](auto availableWidth) {
    314         LayoutUnit maxContentLogicalRight;
    315         InlineLineBreaker lineBreaker(layoutState(), inlineFormattingState.inlineContent(), inlineRunProvider.runs());
    316         LayoutUnit lineLogicalRight;
    317         while (auto run = lineBreaker.nextRun(lineLogicalRight, availableWidth, !lineLogicalRight)) {
    318             if (run->position == InlineLineBreaker::Run::Position::LineBegin)
    319                 lineLogicalRight = 0;
    320             lineLogicalRight += run->width;
    321 
    322             maxContentLogicalRight = std::max(maxContentLogicalRight, lineLogicalRight);
    323         }
    324         return maxContentLogicalRight;
    325     };
    326 
    327     return FormattingContext::InstrinsicWidthConstraints { maximumLineWidth(0), maximumLineWidth(LayoutUnit::max()) };
    328 }
    329 
    330339}
    331340}

  • trunk/Source/WebCore/layout/inlineformatting/InlineFormattingContext.h

    r241194 r241243  
    8686    };
    8787
    88     void layoutFormattingContextRoot(const Box&) const;
    89     void computeWidthAndHeightForReplacedInlineBox(const Box&) const;
    90     void computeMarginBorderAndPadding(const InlineContainer&) const;
     88    void layoutFormattingContextRoot(const Box&, UsedHorizontalValues) const;
     89    void computeWidthAndHeightForReplacedInlineBox(const Box&, UsedHorizontalValues) const;
     90    void computeBorderAndPadding(const Box&, UsedHorizontalValues) const;
     91    void computeMarginBorderAndPadding(const InlineContainer&, UsedHorizontalValues) const;
    9192    void computeHeightAndMargin(const Box&) const;
    92     void computeWidthAndMargin(const Box&) const;
     93    void computeWidthAndMargin(const Box&, UsedHorizontalValues) const;
    9394
    9495    void collectInlineContent(InlineRunProvider&) const;

  • trunk/Tools/ChangeLog

    r241238 r241243  
     12019-02-09  Zalan Bujtas  <zalan@apple.com>
     2
     3        [LFC][IFC] Add intrinsic width support for basic inline containers
     4        https://bugs.webkit.org/show_bug.cgi?id=194473
     5
     6        Reviewed by Antti Koivisto.
     7
     8        Expand tests coverage (11 new tests -> 798)
     9
     10        * LayoutReloaded/misc/LFC-passing-tests.txt: not sure why run-singly keeps producing different ordering.
     11
    1122019-02-09  Benjamin Poulain  <benjamin@webkit.org>
    213

  • trunk/Tools/LayoutReloaded/misc/LFC-passing-tests.txt

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