[css-grid] Use transferred size over content size for automatic minim…

…um size

https://bugs.webkit.org/show_bug.cgi?id=176688

Reviewed by Sergio Villar Senin.

LayoutTests/imported/w3c:

Import changes on the tests related to the new behavior.

* web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-006.html:
* web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-007.html:
* web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-008.html:
* web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-009.html:
* web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-021.html:
* web-platform-tests/css/css-grid-1/grid-items/support/100x50-green.png: Removed.
* web-platform-tests/css/css-grid-1/grid-items/support/25x50-green.png: Added.
* web-platform-tests/css/css-grid-1/grid-items/support/50x100-green.png: Removed.
* web-platform-tests/css/css-grid-1/grid-items/support/50x25-green.png: Added.
* web-platform-tests/css/css-grid-1/grid-items/support/w3c-import.log:

Source/WebCore:

CSS WG has agreed to modify the spec so now the transferred size is used
(if it exists) independently if it's bigger or smaller
than the content size.
See: w3c/csswg-drafts#1149

The spec text (https://drafts.csswg.org/css-grid/#min-size-auto):
  "The automatic minimum size for a grid item in a given dimension is
   its specified size if it exists, otherwise its transferred size
   if that exists, else its content size"

This patch use the WPT tests updated to check the new behavior.

* rendering/GridTrackSizingAlgorithm.cpp:
(WebCore::GridTrackSizingAlgorithmStrategy::minSizeForChild const):
Modified so it always returns the transferred size (if any).


Canonical link: https://commits.webkit.org/193251@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@221910 268f45cc-cd09-0410-ab3c-d52691b4dbfc

LayoutTests/imported/w3c/ChangeLog

@@ -1,3 +1,23 @@
+2017-09-12  Manuel Rego Casasnovas  <rego@igalia.com>
+
+        [css-grid] Use transferred size over content size for automatic minimum size
+        https://bugs.webkit.org/show_bug.cgi?id=176688
+
+        Reviewed by Sergio Villar Senin.
+
+        Import changes on the tests related to the new behavior.
+
+        * web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-006.html:
+        * web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-007.html:
+        * web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-008.html:
+        * web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-009.html:
+        * web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-021.html:
+        * web-platform-tests/css/css-grid-1/grid-items/support/100x50-green.png: Removed.
+        * web-platform-tests/css/css-grid-1/grid-items/support/25x50-green.png: Added.
+        * web-platform-tests/css/css-grid-1/grid-items/support/50x100-green.png: Removed.
+        * web-platform-tests/css/css-grid-1/grid-items/support/50x25-green.png: Added.
+        * web-platform-tests/css/css-grid-1/grid-items/support/w3c-import.log:
+
 2017-09-11  Joseph Pecoraro  <pecoraro@apple.com>
 
         Make the WPT entry point for LayoutTests/http/wpt more discoverable

LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-006.html

@@ -5,7 +5,7 @@
 <link rel="help" href="http://www.w3.org/TR/css-grid-1/#min-size-auto" title="6.6. Implied Minimum Size of Grid Items">
 <link rel="match" href="ref-filled-green-100px-square-image.html">
 <meta name="flags" content="image">
-<meta name="assert" content="Checks that minimum size for grid items is the specified size for width (regardless the content size) and the transferred size for height (as it's smaller than the content size of the image).">
+<meta name="assert" content="Checks that minimum size for grid items is the specified size for width (regardless the content size) and the transferred size of the image for height (even when content size is bigger).">
 <style>
   #reference-overlapped-red {
     position: absolute;

LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-007.html

@@ -5,7 +5,7 @@
 <link rel="help" href="http://www.w3.org/TR/css-grid-1/#min-size-auto" title="6.6. Implied Minimum Size of Grid Items">
 <link rel="match" href="ref-filled-green-100px-square-image.html">
 <meta name="flags" content="image">
-<meta name="assert" content="Checks that minimum size for grid items is the specified size for width (regardless the content size) and the content size for height (as it's smaller than the transferred size of the image).">
+<meta name="assert" content="Checks that minimum size for grid items is the specified size for width (regardless the content size) and the transferred size of the image for height (even when content size is smaller).">
 <style>
   #reference-overlapped-red {
     position: absolute;
@@ -17,12 +17,13 @@
 
   #constrained-grid {
     display: grid;
+    grid-template-columns: auto auto;
     width: 10px;
     height: 10px;
   }
 
-  #test-grid-item-overlapping-green {
-    width: 100px;
+  .test-grid-item-overlapping-green {
+    width: 50px;
     justify-self: stretch;
     align-self: stretch;
   }
@@ -31,6 +32,7 @@
 
 <div id="reference-overlapped-red"></div>
 <div id="constrained-grid">
-  <img id="test-grid-item-overlapping-green" src="support/50x100-green.png" alt="Image download support must be enabled" />
+  <img class="test-grid-item-overlapping-green" src="support/25x50-green.png" alt="Image download support must be enabled" />
+  <img class="test-grid-item-overlapping-green" src="support/25x50-green.png" alt="Image download support must be enabled" />
 </div>
 

LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-008.html

@@ -5,7 +5,7 @@
 <link rel="help" href="http://www.w3.org/TR/css-grid-1/#min-size-auto" title="6.6. Implied Minimum Size of Grid Items">
 <link rel="match" href="ref-filled-green-100px-square-image.html">
 <meta name="flags" content="image">
-<meta name="assert" content="Checks that minimum size for grid items is the specified size for height (regardless the content size) and the transferred size for width (as it's smaller than the content size of the image).">
+<meta name="assert" content="Checks that minimum size for grid items is the specified size for height (regardless the content size) and the transferred size of the image for width (even when content size is bigger).">
 <style>
   #reference-overlapped-red {
     position: absolute;

LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-009.html

@@ -5,7 +5,7 @@
 <link rel="help" href="http://www.w3.org/TR/css-grid-1/#min-size-auto" title="6.6. Implied Minimum Size of Grid Items">
 <link rel="match" href="ref-filled-green-100px-square-image.html">
 <meta name="flags" content="image">
-<meta name="assert" content="Checks that minimum size for grid items is the specified size for height (regardless the content size) and the content size for width (as it's smaller than the transferred size of the image).">
+<meta name="assert" content="Checks that minimum size for grid items is the specified size for height (regardless the content size) and the transferred size for width of the image (even when content size is smaller).">
 <style>
   #reference-overlapped-red {
     position: absolute;
@@ -21,8 +21,8 @@
     height: 10px;
   }
 
-  #test-grid-item-overlapping-green {
-    height: 100px;
+  .test-grid-item-overlapping-green {
+    height: 50px;
     justify-self: stretch;
     align-self: stretch;
   }
@@ -31,6 +31,7 @@
 
 <div id="reference-overlapped-red"></div>
 <div id="constrained-grid">
-  <img id="test-grid-item-overlapping-green" src="support/100x50-green.png" alt="Image download support must be enabled" />
+  <img class="test-grid-item-overlapping-green" src="support/50x25-green.png" alt="Image download support must be enabled" />
+  <img class="test-grid-item-overlapping-green" src="support/50x25-green.png" alt="Image download support must be enabled" />
 </div>
 

LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/grid-minimum-size-grid-items-021.html

@@ -67,17 +67,17 @@
 
   function runTests() {
     checkGridSizeTracksAndImageSize("grid-1", "img-1", "200px", "200px", "200px", "200px", "200px", "200px");
-    checkGridSizeTracksAndImageSize("grid-2", "img-2", "10px", "10px", "200px", "50px", "200px", "200px");
+    checkGridSizeTracksAndImageSize("grid-2", "img-2", "10px", "10px", "200px", "200px", "200px", "200px");
     checkGridSizeTracksAndImageSize("grid-3", "img-3", "200px", "50px", "200px", "50px", "200px", "200px");
     checkGridSizeTracksAndImageSize("grid-4", "img-4", "200px", "10px", "200px", "50px", "200px", "200px");
     checkGridSizeTracksAndImageSize("grid-5", "img-5", "200px", "50px", "50px", "50px", "50px", "50px");
     checkGridSizeTracksAndImageSize("grid-6", "img-6", "200px", "10px", "50px", "50px", "50px", "50px");
     checkGridSizeTracksAndImageSize("grid-7", "img-7", "200px", "225px", "200px", "200px 25px", "200px", "200px");
-    checkGridSizeTracksAndImageSize("grid-8", "img-8", "10px", "10px", "200px", "50px 25px", "200px", "200px");
+    checkGridSizeTracksAndImageSize("grid-8", "img-8", "10px", "10px", "200px", "200px 25px", "200px", "200px");
     checkGridSizeTracksAndImageSize("grid-9", "img-9", "200px", "125px", "200px", "100px 25px", "200px", "200px");
-    checkGridSizeTracksAndImageSize("grid-10", "img-10", "200px", "10px", "200px", "50px 25px", "200px", "200px");
+    checkGridSizeTracksAndImageSize("grid-10", "img-10", "200px", "10px", "200px", "100px 25px", "200px", "200px");
     checkGridSizeTracksAndImageSize("grid-11", "img-11", "200px", "125px", "100px", "100px 25px", "100px", "100px");
-    checkGridSizeTracksAndImageSize("grid-12", "img-12", "200px", "10px", "100px", "50px 25px", "100px", "100px");
+    checkGridSizeTracksAndImageSize("grid-12", "img-12", "200px", "10px", "100px", "100px 25px", "100px", "100px");
     checkGridSizeTracksAndImageSize("grid-13", "img-13", "200px", "200px", "200px", "200px", "200px", "200px");
     checkGridSizeTracksAndImageSize("grid-14", "img-14", "10px", "10px", "200px", "200px", "200px", "200px");
     checkGridSizeTracksAndImageSize("grid-15", "img-15", "200px", "200px", "200px", "200px", "200px", "200px");

LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/support/w3c-import.log

@@ -15,8 +15,8 @@ None
 ------------------------------------------------------------------------
 List of files:
 /LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/support/100x100-green.png
-/LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/support/100x50-green.png
 /LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/support/200x200-green.png
+/LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/support/25x50-green.png
 /LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/support/500x500-green.png
-/LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/support/50x100-green.png
+/LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/support/50x25-green.png
 /LayoutTests/imported/w3c/web-platform-tests/css/css-grid-1/grid-items/support/50x50-green.png

Source/WebCore/ChangeLog

@@ -1,3 +1,26 @@
+2017-09-12  Manuel Rego Casasnovas  <rego@igalia.com>
+
+        [css-grid] Use transferred size over content size for automatic minimum size
+        https://bugs.webkit.org/show_bug.cgi?id=176688
+
+        Reviewed by Sergio Villar Senin.
+
+        CSS WG has agreed to modify the spec so now the transferred size is used
+        (if it exists) independently if it's bigger or smaller
+        than the content size.
+        See: https://github.com/w3c/csswg-drafts/issues/1149
+
+        The spec text (https://drafts.csswg.org/css-grid/#min-size-auto):
+          "The automatic minimum size for a grid item in a given dimension is
+           its specified size if it exists, otherwise its transferred size
+           if that exists, else its content size"
+
+        This patch use the WPT tests updated to check the new behavior.
+
+        * rendering/GridTrackSizingAlgorithm.cpp:
+        (WebCore::GridTrackSizingAlgorithmStrategy::minSizeForChild const):
+        Modified so it always returns the transferred size (if any).
+
 2017-09-12  Fujii Hironori  <Hironori.Fujii@sony.com>
 
         [Freetype] Doesn't support coloured fonts

Source/WebCore/rendering/GridTrackSizingAlgorithm.cpp

@@ -786,15 +786,8 @@ LayoutUnit GridTrackSizingAlgorithmStrategy::minSizeForChild(RenderBox& child) c
     const Length& childSize = isRowAxis ? child.style().logicalWidth() : child.style().logicalHeight();
 
     bool overflowIsVisible = isRowAxis ? child.style().overflowInlineDirection() == OVISIBLE : child.style().overflowBlockDirection() == OVISIBLE;
-    if (!childSize.isAuto() || (childMinSize.isAuto() && overflowIsVisible)) {
-        if (child.isRenderReplaced() && childSize.isAuto()) {
-            // If the box has an aspect ratio and no specified size, its automatic
-            // minimum size is the smaller of its content size and its transferred
-            // size.
-            return isRowAxis ? std::min(child.intrinsicLogicalWidth(), minContentForChild(child)) : std::min(child.intrinsicLogicalHeight(), minContentForChild(child));
-        }
+    if (!childSize.isAuto() || (childMinSize.isAuto() && overflowIsVisible))
         return minContentForChild(child);
-    }
 
     bool overrideSizeHasChanged = updateOverrideContainingBlockContentSizeForChild(child, childInlineDirection);