Attachment 372193 Details for Bug 198889 – Patch

[patch] Patch

bug-198889-20190615082712.patch (text/plain), 8.57 KB, created by zalan on 2019-06-15 08:27:12 PDT

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Creator: zalan

Created: 2019-06-15 08:27:12 PDT

Size: 8.57 KB

patch

obsolete

>Subversion Revision: 246456
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index 2328bca1c8d4e2dee032d57d5c70b9cd02c4211b..f389a0b17a5f265334b894ab1559a9ddf1d87273 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,18 @@
>+2019-06-15  Zalan Bujtas  <zalan@apple.com>
>+
>+        [LFC][Floats] Add bottom value to FloatingState::Constraints
>+        https://bugs.webkit.org/show_bug.cgi?id=198889
>+        <rdar://problem/51776730>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Constraints::left/right->y indicates where this particular constrain ends. This is going to be used by inline layout to figure where
>+        the next line should go (vertical position).
>+
>+        * layout/floats/FloatingState.cpp:
>+        (WebCore::Layout::FloatingState::constraints const):
>+        * layout/floats/FloatingState.h:
>+
> 2019-06-15  Zalan Bujtas  <zalan@apple.com>
> 
>         [LFC] Add Layout::Box::isContainingBlockDescendantOf
>diff --git a/Source/WebCore/layout/LayoutUnits.h b/Source/WebCore/layout/LayoutUnits.h
>index 08927bffb5f3a3c499e14e3c21e1cbf8ba3d6581..24193145f9a97ba1c4f3b6d330a7a1f7830dbb2d 100644
>--- a/Source/WebCore/layout/LayoutUnits.h
>+++ b/Source/WebCore/layout/LayoutUnits.h
>@@ -60,6 +60,7 @@ struct Point {
>     Point(LayoutUnit, LayoutUnit);
>     Point(LayoutPoint);
>     void moveBy(LayoutPoint);
>+    void moveBy(LayoutSize);
>     operator LayoutPoint() const { return { x, y }; }
> };
> 
>@@ -85,6 +86,12 @@ inline void Point::moveBy(LayoutPoint offset)
>     y += offset.y();
> }
> 
>+inline void Point::moveBy(LayoutSize offset)
>+{
>+    x += offset.width();
>+    y += offset.height();
>+}
>+
> // Margin, border, padding
> struct HorizontalEdges {
>     LayoutUnit left;
>diff --git a/Source/WebCore/layout/blockformatting/BlockFormattingContext.cpp b/Source/WebCore/layout/blockformatting/BlockFormattingContext.cpp
>index 13d636c27f8bfb2d7f8e7dd85ef65f27e04ffbbc..c49f9224164039b5481fa7e79562e6753e654e55 100644
>--- a/Source/WebCore/layout/blockformatting/BlockFormattingContext.cpp
>+++ b/Source/WebCore/layout/blockformatting/BlockFormattingContext.cpp
>@@ -148,8 +148,10 @@ Optional<LayoutUnit> BlockFormattingContext::usedAvailableWidthForFloatAvoider(c
>     auto containingBlockContentBoxRight = containingBlockRight - containingBlockDisplayBox.borderRight() + containingBlockDisplayBox.paddingRight().valueOr(0);
> 
>     // Shrink the available space if the floats are actually intruding at this vertical position.
>-    availableWidth -= (std::max<LayoutUnit>(0, constraints.left.valueOr(PositionInContextRoot { 0 }) - containingBlockContentBoxLeft)
>-        + std::max<LayoutUnit>(0, containingBlockContentBoxRight - constraints.right.valueOr(PositionInContextRoot { containingBlockContentBoxRight })));
>+    if (constraints.left)
>+        availableWidth -= std::max<LayoutUnit>(0, constraints.left->x - containingBlockContentBoxLeft);
>+    if (constraints.right)
>+        availableWidth -= std::max<LayoutUnit>(0, containingBlockContentBoxRight - constraints.right->x);
>     return availableWidth;
> }
> 
>diff --git a/Source/WebCore/layout/floats/FloatingState.cpp b/Source/WebCore/layout/floats/FloatingState.cpp
>index 7651ec696c6de27606b4d9916840e33c89c0c611..50d24ee26b8cc4643f0dbff5bfa1b8a9e3582ece 100644
>--- a/Source/WebCore/layout/floats/FloatingState.cpp
>+++ b/Source/WebCore/layout/floats/FloatingState.cpp
>@@ -119,9 +119,12 @@ FloatingState::Constraints FloatingState::constraints(PositionInContextRoot vert
>     // 3. Convert left/right positions back to formattingContextRoot's cooridnate system.
>     auto coordinateMappingIsRequired = &root() != &formattingContextRoot;
>     auto adjustedPosition = Point { 0, verticalPosition };
>+    LayoutSize adjustingDelta;
> 
>-    if (coordinateMappingIsRequired)
>+    if (coordinateMappingIsRequired) {
>         adjustedPosition = FormattingContext::mapPointToAncestor(m_layoutState, adjustedPosition, downcast<Container>(formattingContextRoot), downcast<Container>(root()));
>+        adjustingDelta = { adjustedPosition.x, adjustedPosition.y - verticalPosition };
>+    }
> 
>     Constraints constraints;
>     for (int index = m_floats.size() - 1; index >= 0; --index) {
>@@ -138,9 +141,9 @@ FloatingState::Constraints FloatingState::constraints(PositionInContextRoot vert
>             continue;
> 
>         if (floatItem.isLeftPositioned())
>-            constraints.left = PositionInContextRoot { rect.right() };
>+            constraints.left = PointInContextRoot { rect.right(), rect.bottom() };
>         else
>-            constraints.right = PositionInContextRoot { rect.left() };
>+            constraints.right = PointInContextRoot { rect.left(), rect.bottom() };
> 
>         if (constraints.left && constraints.right)
>             break;
>@@ -148,12 +151,11 @@ FloatingState::Constraints FloatingState::constraints(PositionInContextRoot vert
> 
>     if (coordinateMappingIsRequired) {
>         if (constraints.left)
>-            constraints.left = PositionInContextRoot { *constraints.left - adjustedPosition.x };
>+            constraints.left->moveBy(-adjustingDelta);
> 
>         if (constraints.right)
>-            constraints.right = PositionInContextRoot { *constraints.right - adjustedPosition.x };
>+            constraints.right->moveBy(-adjustingDelta);
>     }
>-
>     return constraints;
> }
> 
>diff --git a/Source/WebCore/layout/floats/FloatingState.h b/Source/WebCore/layout/floats/FloatingState.h
>index f253f2c3e4d8dece6a52e8c0a563e6a2a4d87f41..7e491dbb66484e2e88cf17b5ba51203f8afa70f0 100644
>--- a/Source/WebCore/layout/floats/FloatingState.h
>+++ b/Source/WebCore/layout/floats/FloatingState.h
>@@ -60,8 +60,8 @@ public:
>     Optional<PositionInContextRoot> bottom(const Box& formattingContextRoot) const;
> 
>     struct Constraints {
>-        Optional<PositionInContextRoot> left;
>-        Optional<PositionInContextRoot> right;
>+        Optional<PointInContextRoot> left;
>+        Optional<PointInContextRoot> right;
>     };
>     Constraints constraints(PositionInContextRoot verticalPosition, const Box& formattingContextRoot) const;
> 
>diff --git a/Source/WebCore/layout/inlineformatting/InlineFormattingContextLineLayout.cpp b/Source/WebCore/layout/inlineformatting/InlineFormattingContextLineLayout.cpp
>index 2032caf676ef336244b322697f0090524f562a02..62ce23b4d684a14c6513dd78e898b14fc99e3dcb 100644
>--- a/Source/WebCore/layout/inlineformatting/InlineFormattingContextLineLayout.cpp
>+++ b/Source/WebCore/layout/inlineformatting/InlineFormattingContextLineLayout.cpp
>@@ -230,23 +230,23 @@ void InlineFormattingContext::LineLayout::layout(LayoutUnit widthConstraint) con
>         auto lineLogicalLeft = lineHorizontalConstraint.logicalTopLeft.x();
>         auto floatConstraints = m_floatingState.constraints({ lineLogicalTop }, m_formattingRoot);
>         // Check if these constraints actually put limitation on the line.
>-        if (floatConstraints.left && *floatConstraints.left <= formattingRootDisplayBox.contentBoxLeft())
>+        if (floatConstraints.left && floatConstraints.left->x <= formattingRootDisplayBox.contentBoxLeft())
>             floatConstraints.left = { };
> 
>-        if (floatConstraints.right && *floatConstraints.right >= formattingRootDisplayBox.contentBoxRight())
>+        if (floatConstraints.right && floatConstraints.right->x >= formattingRootDisplayBox.contentBoxRight())
>             floatConstraints.right = { };
> 
>         if (floatConstraints.left && floatConstraints.right) {
>-            ASSERT(*floatConstraints.left < *floatConstraints.right);
>-            availableWidth = *floatConstraints.right - *floatConstraints.left;
>-            lineLogicalLeft = *floatConstraints.left;
>+            ASSERT(floatConstraints.left->x < floatConstraints.right->x);
>+            availableWidth = floatConstraints.right->x - floatConstraints.left->x;
>+            lineLogicalLeft = floatConstraints.left->x;
>         } else if (floatConstraints.left) {
>-            ASSERT(*floatConstraints.left > lineLogicalLeft);
>-            availableWidth -= (*floatConstraints.left - lineLogicalLeft);
>-            lineLogicalLeft = *floatConstraints.left;
>+            ASSERT(floatConstraints.left->x > lineLogicalLeft);
>+            availableWidth -= (floatConstraints.left->x - lineLogicalLeft);
>+            lineLogicalLeft = floatConstraints.left->x;
>         } else if (floatConstraints.right) {
>-            ASSERT(*floatConstraints.right > lineLogicalLeft);
>-            availableWidth = *floatConstraints.right - lineLogicalLeft;
>+            ASSERT(floatConstraints.right->x > lineLogicalLeft);
>+            availableWidth = floatConstraints.right->x - lineLogicalLeft;
>         }
>         lineHorizontalConstraint.availableLogicalWidth = availableWidth;
>         lineHorizontalConstraint.logicalTopLeft.setX(lineLogicalLeft);

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