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VALUES-4 defines the internal representation of `calc()` as a tree of
calculation nodes. ( https://www.w3.org/TR/css-values-4/#calc-internal )
VALUES-3 lacked any definition here, so we had our own ad-hoc
implementation based around the spec grammar. This commit replaces that
with CalculationNodes representing each possible node in the tree.
There are no intended functional changes, though we do now support
nested calc() which previously did not work. For example:
`width: calc( 42 * calc(3 + 7) );`
I have added an example of this to our test page.
A couple of the layout tests that used `calc()` now return values that
are 0.5px different from before. There's no visual difference, so I
have updated the tests to use the new results.
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This makes it possible to do arithmetic on them without having to
resolve to their canonical unit, which often requires context
information that is not available until the last minute. For example, a
Length cannot be resolved to px without knowing the font size, parent
element's size, etc.
Only Length currently requires such context, but treating all these
types the same means that code that manipulates them does not need to
know or care if a new unit gets added that does require contextual
information.
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Level 4 drops the limitations of what types can be a denominator, which
means `<calc-number-sum>`, `<calc-number-product>` and
`<calc-number-value>` all go away.
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I accidentally moved this when moving the CalculatedStyleValue methods,
and didn't notice because it was hidden in the middle. Oops!
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Upon opening already opened file, the cursor was previously not
set to the correct line and column. With this patch, it should
be correctly set.
Fixes a bug where ctrl+clicking a function declaration would not
jump to the line if the file containing the function is already
open.
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This is not documented yet, but the preferred style is getting both
upfront instead of inlining various kinds of calls in places that use
the realm and vm.
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This has the advantage of recognizing when the Stream reaches EOF and
avoids an endless loop.
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Some even user-visible!
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Linus says it should be a widget and not a window!
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Add 32px and 16px application icons for the Gradient screensaver
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This brings the name in-line with the naming convention used by the
other screensavers 'Starfield' and 'Tubes'.
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read_webp_first_chunk() sensibly assumes that if decode_webp_header()
succeeds, there are at least sizeof(WebPFileHeader) bytes available.
But if the file size in the header was less than the size of the header,
decode_webp_header() would truncate the data to less than that and
happily report success. Now it no longer does that.
Found by clusterfuzz:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57843&sort=-opened&can=1&q=proj%3Aserenity
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No behavior change.
(Well, technically mix() uses the other simple implementation of lerp
and the two have slightly different behavior if the arguments are of
very different magnitude and in various corner cases. But in practice,
for ICC profiles, it shouldn't matter. For a few profiles I tested, it
didn't have a measurable effect.)
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PR #18166 introduced the ability to parse ECC certificates. If we
now fail here the reason is mostlikely something new and we should
prevent this rabbit hole from happening.
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Some refactoring of our root ca loading process:
- Remove duplicate code
- Remove duplicate calls to `parse_root_ca`
- Load user imported certificates in Browser/RequestServer
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TextEditor, HackStudio and SQLStudio now print the current line and
column number, as well as the number of currently selected words, with
thousands separators.
TextEditor also uses thousands seperators for the current word and
character count.
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StartingStateHandler and SeekingStateHandler were declaring their own
`bool m_playing` fields (from previous code where there was no base
class).
In the case of SeekingStateHandler, this only made the logging wrong.
For StartingStateHandler, however, this meant that it was not using
the boolean passed as a parameter to the constructor to define the
state that would be transitioned to after the Starting state finished.
This meant that when the Stopping state replaced itself with the
Starting state, playback would not resume when Starting state exits.
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Otherwise, the Gfx::Painter will get choked up on NaNs and start
infinitely splitting paths till it OOMs.
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This is a bit if a hack, but without this unitless values for these
attributes fail to parse with <!DOCTYPE html>.
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This is needed for hit testing the directional arrows on the Street
View office tour, and generally makes SVG hit testing more precise.
Note: The rough bounding box is hit test first, so this should not
be a load more overhead.
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Not sure why this was not done before, not now it works easily :^)
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This also combines the viewbox mapping into the same transform and
reuses some code by using Path::copy_transformed() rather than manually
mapping each segment of the path.
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Previously, if you had an SVG with a viewbox and a definite width
and height, then all SVGGeometryBox boxes within that SVG would
have a width and height set to the size of the parent SVG.
This broke hit testing for SVG paths, and didn't make much sense.
It seems like the SVG sizing hack was patching over the incorrect
logic in viewbox_scaling() and the incorrect path sizing (which was
never reached).
Before this change the view box scaling was:
element_dimension / viewbox_dimension
Which only seemed to work because of the SVG sizing hack that made
all paths the size of the containing SVG.
After this change SVGGeometryBoxes are (in most cases) sized correctly
based on their bounding boxes, which allows hit testing to function,
and the view box scaling is updated now to:
containing_SVG_dimension / viewbox_dimension
Which works with one less hack :^)
This now also handles centering the viewbox within the parent SVG
element and applying any tranforms to the bounding box. This still
a bit ad-hoc, but much more closely matches other browsers now.
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This uses the new attribute parser functionality, and then resolves the
transform list into a single Gfx::AffineTransform.
This also adds a .get_transform() function which resolves the final
transform, by applying all parent transforms.
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This is needed to fix the rendering of the Street View directional
controls (which have paths with various levels of opacity set by
this attribute).
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This parses SVG transforms using the syntax from CSS Transforms
Module Level 1. Note: This looks very similar to CSS tranforms, but
the syntax is not compatible. For example, SVG rotate() is
rotate(<a> <x> <y>) where all parameters are unitless numbers whereas
CSS rotate() is rotate(<angle> unit) along with separate rotateX/Y/Z().
(At the same time AttributeParser is updated to use GenericLexer which
makes for easier string matching).
There is work needed for error handling (which AttributeParser does not
deal with very gracefully right now).
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This now applies clipping to the destination bounding box before
painting, which cuts out a load of clipped computation and allows
using the faster set_physical_pixel() method.
Alongside this it also combines the source_transform and
inverse_transform outside the hot loop (which might cut things down
a little).
The `destination_quad.contains()` check is also removed in favour
of just checking if the mapped point is inside the source rect,
which takes less work to compute than checking the bounding box.
This takes this method down from 98% of the time to 10% of the
time when painting Google Street View (with no obvious issues).
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As noted in serval comments doing this goes against the WC3 spec,
and breaks parsing then re-serializing URLs that contain percent
encoded data, that was not encoded using the same character set as
the serializer.
For example, previously if you had a URL like:
https:://foo.com/what%2F%2F (the path is what + '//' percent encoded)
Creating URL("https:://foo.com/what%2F%2F").serialize() would return:
https://foo.com/what//
Which is incorrect and not the same as the URL we passed. This is
because the re-serializing uses the PercentEncodeSet::Path which
does not include '/'.
Only doing the percent encoding in the setters fixes this, which
is required to navigate to Google Street View (which includes a
percent encoded URL in its URL).
Seems to fix #13477 too
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Previously, we would hit test positioned elements, then stacking
contexts with z-index 0, as two seperate steps. This did not really
follow the reverse paint order, where positioned elements and stacking
contexts with z-index 0 are painted during the same tree transversal.
This commit updates
for_each_in_subtree_of_type_within_same_stacking_context_in_reverse()
to return the stacking contexts it comes across too, but not recurse
into them. This more closely follows the paint order.
This fixes examples such as:
<div id="a" style="width: 10px; height: 10px">
<div id="b" style="position: absolute; width: 10px; height: 10px">
<div
style="position: absolute; width: 10px; height: 10px; z-index: 0"
>
<div id="c"
style="width: 100%; height: 100%; background-color:red;"
onclick="alert('You Win!')">
</div>
</div>
</div>
</div>
Where previously the onclick on #c would never fire as hit testing
always stopped at #b. This is reduced from Google Street View,
which becomes interactable after this commit.
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