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LibWeb: Support <svg> elements with display: block

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There are a couple of things that went into this:

- We now calculate the intrinsic width/height and aspect ratio of <svg>
  elements based on the spec algorithm instead of our previous ad-hoc
  guesswork solution.

- Replaced elements with automatic size and intrinsic aspect ratio but
  no intrinsic dimensions are now sized with the stretch-fit width
  formula.

- We take care to assign both used width and used height to <svg>
  elements before running their SVG formatting contexts. This ensures
  that the inside SVG content is laid out with knowledge of its
  viewport geometry.

- We avoid infinite recursion in tentative_height_for_replaced_element()
  by using the already-calculated used width instead of calling the
  function that calculates the used width (since that may call us right
  back again).
This commit is contained in:
Andreas Kling 2023-05-19 18:14:37 +02:00
parent 28d2e26678
commit f0560fd087
11 changed files with 107 additions and 74 deletions
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12
Tests/LibWeb/Layout/expected/svg/svg-fill-with-bogus-url.txt
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@ -1,7 +1,7 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (0,0) content-size 800x37.835937 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x21.835937 children: inline
line 0 width: 0, height: 21.835937, bottom: 21.835937, baseline: 100
frag 0 from SVGSVGBox start: 0, length: 0, rect: [8,8 0x0]
SVGSVGBox <svg> at (8,8) content-size 0x0 [SVG] children: not-inline
SVGGeometryBox <rect> at (8,8) content-size 100x100 children: not-inline
BlockContainer <html> at (0,0) content-size 800x800 [BFC] children: not-inline
BlockContainer <body> at (8,8) content-size 784x784 children: inline
line 0 width: 784, height: 784, bottom: 784, baseline: 784
frag 0 from SVGSVGBox start: 0, length: 0, rect: [8,8 784x784]
SVGSVGBox <svg> at (8,8) content-size 784x784 [SVG] children: not-inline
SVGGeometryBox <rect> at (8,8) content-size 784x784 children: not-inline