At the moment, all it can do is read all image formats that LibGfx can
read and save to any image format that LibGfx can write (currently bmp,
png, qoi).
Currently, it drops all image metadata (including color profiles).
Over time, this could learn tricks like keeping color profiles,
converting an image to a different color profile, cropping out a part of
an image, and so on.
This makes all the code for fill_path() member functions of the painter,
and moves them into a new FillPathImplementation.cpp. This allows us
to avoid polluting Painter.h with implementation details, and makes
the edit, compile, retry loop much shorter.
This improves fill_path() performance by adding an API to the painter
that allows painting an entire scanline rather than just a pixel.
With this paths can be clipped a scanline at a time rather than each
pixel, removing a fair amount of checks.
Along with optimized clipping, this can now use a fast_u32_fill() to
paint all but the subpixels of a scanline if a solid color with no
alpha channel is used (which is quite common in SVGs).
This reduces scrolling around on svg.html from 21% in set_pixel() and
19% in fill_path() to just 7.8% in fill_path (with set_pixel()
eliminated). Now fill_path() is far from the slowest code when
scrolling the page.
Use FlyString::from_deprecated_fly_string() in these instances instead
of FlyString::from_utf8(). As we convert to new FlyString/String we want
to be aware of these potential unnecessary allocations.
This doesn't return a completion in the spec as it doesn't need to
propagate any errors. It's also unused right now, which is probably why
no one noticed.
Until now we were just creating a stacking context for the tree root,
which usually is the viewport element. This lead to weird painting
behaviour when negative z-index children of the html element that
established their own stacking context were drawn below the canvas
background.
Now we establish a stacking context for both, the root element and the
viewport.
The one behavior difference here is that the statusbar used to display
"Unknown" for unknown file types, and "Markdown" for md, but we now
display "Plain Text" for all file types without syntax highlighters.
Removal of dummy execution context in
9aca54091a caused a crash in
`execute_async_script` because of empty execution contexts stack
during `create_resolving_functions` call.
When using the flex shrink factor, the flexible length resolution
algorithm was incorrectly ignoring the `frozen` flag on items and would
update the same items again, causing overconsumption of the remaining
free space on the flex line.
In case flex items had `margin: auto` on the primary flex axis, we were
still also distributing remaining space according to `justify-content`
rules. This lead to duplicated spacing in various places and overflows.
It looks like this issue was observed previously but missidentified
because there was logic to ignore margins at the start and end which
would partially paper over the root cause. However this created other
bugs (like for example not having a margin at beginning and end ;-)) and
I can find nothing in the spec or other browser behaviour that indicates
that this is something that should be done.
Now we skip justify-content space distribution alltogether if it has
already been distributed to auto margins.
By default, JPEGs use YCbCr to encode colors however other encoding
exist. This patch adds the logic to determine which transformation is
needed and support for RGB encoded JPEGs :^).
This half-standardized application specific segment is used for color
transform information. It means that the decoder is know informed if the
image uses YCbCr, RGB, CMYK or even YCCK.
This fixes a bug in the CSS Grid when there is a column and/or row gap,
as previously it would take the index of the incorrect column when
finding the `AvailableSize`.
There is a mild complication in the GridFormattingContext as the
OccupationGrid does not take into account the gap columns and rows that
later appear in the `Vector<TemporaryTrack>` columns and rows. The
PositionedBoxes are kind of a connection between the two, and so it's
now more explicit whether you would like to refer to a column by its
position taking into the gap columns/rows or not.
The draft CSS-FLEXBOX-1 spec had a more detailed description of this
algorithm, so let's use that as our basis for the implementation.
Test by Aliaksandr. :^)
When resolving these constraints to CSS pixel sizes, we have to resolve
padding-top and padding-bottom against the flex container's *width*,
not its height.
The padding-top and padding-bottom properties are relative to the
*width* of the containing block, not the height.
It's funny how we keep making this same mistake again and again. :^)
Brought to you by the inventor of QOI, QOA is a lossy audio codec that
is, as the name says, quite okay in compressing audio data reasonably
well without frequency transformation, mostly introducing some white
noise in the background. This implementation of QOA is fully compatible
with the qoa.h reference implementation as of 2023-02-25. Note that
there may be changes to the QOA format before a specification is
finalized, and there is currently no information on when that will
happen and which changes will be made.
This implementation of QOA can handle varying sample rate and varying
channel count files. The reference implementation does not produce these
files and cannot handle them, so their implementation is untested.
The QOA loader is capable of seeking in constant-bitrate streams.
QOA links:
https://phoboslab.org/log/2023/02/qoa-time-domain-audio-compressionhttps://github.com/phoboslab/qoa
This was necessary in the past, because IFC would set the height of its
containing block after inline layout.
Now that IFC can properly communicate the automatic size to its parent
formatting context, this hack is no longer necessary.
Instead of putting every rule that matches a pseudo element in the
same bucket, let them go in the best ID/class/tag name bucket instead.
Then, add a flag to MatchingRule that says whether it contains a
pseudo element in the rightmost compound selector.
When deciding which selectors to run for an element, we can now simply
filter in/out pseudo element selectors as appropriate depending on what
we're trying to match.
This fixes an issue where pages using Font Awesome had 1700+ rules in the
pseudo-element rule cache. (This meant all those rules had to run
against every element twice or more while instantiating pseudo elements.)
"Specified" means something else in CSS, so let's not use this
overloaded word here. These helpers return the inner main/cross size of
a given box, so let's say "inner" instead.
