This fixes two problems that could cause scanned text fragments to end up with
incorrect LAST_FRAGMENT_OF_ELEMENT or FIRST_FRAGMENT_OF_ELEMENT flags:
1. If a single unscanned fragment was split into multiple scanned fragments,
then all of them would inherit its flags. We need to clear these flags,
except for the first and last scanned fragment.
2. When an unscanned fragment generated zero scanned fragments, we correctly
called `meld_with_next_inline_fragment` to transfer LAST_FRAGMENT flags to
the preceding fragment, but we didn't do anything to transfer
FIRST_FRAGMENT flags to the following fragment. We can fix this by calling
`meld_with_prev_inline_fragment` on the following fragment.
Factor out a new `meld_with_prev_inline_fragment` method that mirrors the
existing `meld_with_next_inline_fragment`.
This also fixes a bug in `meld_with_next` that was already fixed in the
`meld_with_prev` by @notriddle in #10419. The bug is that it was traversing
the inline context nodes in the wrong order. It should start at the outermost
enclosing node, since the fragments might be at different nesting levels under
some common ancestor.
Added panic message to failures.
Added the panic message to failures. This is a step towards #10334, since it gives us access to the panic error message when we fire a `mozbrowsererror` event. The remaining steps are also to record the backtrace, and to report the failure in the event.
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Take transform:translate into account when computing clipping regions.
Note that this only works for translation; a more general fix would
require major changes to how display lists work.
Closes#10431?
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layout: Make child stacking contexts of fixed position stacking contexts also fixed position.
Improves YouTube.
Improves the Washington Post.
Closes#10526.
r? @glennw
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Correct x and y input for origin_rect
Fix error in construction of the `origin_rect` for `UnioningFragmentBorderBoxIterator`.
r? @asajeffrey
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Before this fix, if a TextRun containing an insertion point was split into
multiple ScannedText fragments, text layout would draw an insertion point
inside of each of the fragments. This patch records the insertion point
position at most once per TextRun, and copies it only into the appropriate
ScannedText fragment.
set to be scrolled.
This makes them establish stacking contexts, which is a CSS 2.1 spec
violation. However, we were already violating the spec here for
absolutely-positioned elements with `overflow: scroll`. It will probably
be easier to fix this spec violation once we either switch entirely to
WebRender or we have multiple layers per stacking context.
Closes#2742.
Move some CSS properties to match Gecko's representation
Fixes#10403. Animation had an extra transition-delay property, which was also moved to Box. Let me know if I should squash the commits.
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