Position grid items by row/column index
https://bugs.webkit.org/show_bug.cgi?id=91293
Reviewed by Ojan Vafai.
Source/WebCore:
Do some initial grid positioning. Only handle the simple case where tracks are
fixed values and don't properly size the grid items. This gives us something to
work with and starts implementing the "Grid Track Sizing Algorithm":
http://dev.w3.org/csswg/css3-grid-layout/#grid-track-sizing-algorithm0
Test: fast/css-grid-layout/place-cell-by-index.html
* rendering/RenderGrid.cpp:
(RenderGrid::GridTrack): Data structure for holding the track size. UsedBreadth matches the terminology
used in the spec.
(WebCore::RenderGrid::layoutBlock): Pull in some boiler plate code and put the
grid specific code in layoutGridItems.
(WebCore::RenderGrid::computedUsedBreadthOfGridTracks): Implement part of the grid track sizing algorithm.
(WebCore::RenderGrid::layoutGridItems): Compute the size of grid tracks, layout and position children.
(WebCore::RenderGrid::findChildLogicalPosition): Map track sizes to the actual position of the child.
* rendering/RenderGrid.h:
* rendering/style/RenderStyle.h: Just return a copy of Length rather than a reference to Length. This seems
more consistent with other getters that return a Length.
LayoutTests:
Add a test for grid layout in each writing mode direction. The height in vertical writing mode is incorrect for now.
* fast/css-grid-layout/containing-block-grids-expected.html: Scope <p> around text only.
* fast/css-grid-layout/containing-block-grids.html: Fix missing closing </div>.
* fast/css-grid-layout/place-cell-by-index-expected.txt: Added.
* fast/css-grid-layout/place-cell-by-index.html: Added.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@122747 268f45cc-cd09-0410-ab3c-d52691b4dbfc
9 files changed
