When upsampling e.g. the 4-bit value 0b1101 to 8-bit, we used to repeat
the value to fill the full 8-bits, e.g. 0b11011101. This maps RGB colors
to 8-bit nicely, but is the wrong thing to do for palette indices.
Stop doing this for palette indices.
Fixes "Indexed color space index out of range" for 11 files in the
PDF/A 0000.zip test set now that we correctly handle palette indices
as of the previous commit:
Malformed PDF file: Indexed color space lookup table doesn't match
size, in 4 files, on 8 pages, 73 times
path/to/0000/0000206.pdf 2 4 (2x) 5 (3x) 6 (4x)
path/to/0000/0000364.pdf 5 6
path/to/0000/0000918.pdf 5
path/to/0000/0000683.pdf 8
Previously, we were scaling palette indices from 0..(palette_size - 1)
to 0..255 before using them as index into the palette. Instead, do not
scale palette indices before using them as indices.
(Renderer::load_image() uses `component_value_decoders.empend(
.0f, 255.0f, dmin, dmax)`, so to get an identity mapping, we have to
return `0, 255` from IndexedColorSpace::default_decode()).
Fixes rendering of the gradient on page 5 of 0000277.pdf.
BorderRadiusCornerClipper usage to clip border radius is specific to
CPU painter so it should not be stored in painting commands.
Also with this change bitmaps for corner sampling are allocated during
painting commands replaying instead of commands recording.
The FIXME added to ConnectionFromClient::remove_dom_node is copied from
Web::EditEventHandler. The same behavior is observed here, with many
lingering Layout::TextNodes, for example.
The Inspector will have context menu support to manipulate the DOM, e.g.
adding or removing nodes/attributes. This context menu will require some
detailed knowledge about what element in the Inspector has been clicked.
To support this, we intercept the `contextmenu` event and collect the
required information to be sent to the Inspector client over IPC.
First, we had a logic typo where we were checking parse errors for
non-empty instead of non-null. Fixing this caused more modules to
actually start executing.
As usual, this tripped on some "empty backup incumbent settings object
stack" bugs, so this patch also pushes a module execution context in
two places where it makes sense.
Co-Authored-By: networkException <networkexception@serenityos.org>
For now, we handle this by creating a synthetic async function to wrap
the top-level module code. This allows us to piggyback on the async
function driver wrapper mechanism.
Gfx::ICC::Profile's current API takes bytes, so we need to do some
contortions for LAB values to go through.
This will probably become nicer once we implement all the backward
transforms in Gfx::ICC::Profile, but for now let's hack it in
on the LibPDF side.
Makes colors in 0000651.pdf looks good, especially on pages 1 and 7-12.
Other browsers have a nice little feature where right-clicking on a
`mailto` or `tel` link will let you copy the email address or telephone
number, instead of the full URL. So let's do that!
mft1 and mft2 tags are very similar. The only difference is that
mft1 uses an u8 lookup table, while mft2 uses a u16 lookup table.
This means their PCS lookup encodings are different, and mft2 uses a
PCSLAB encoding that's different from other places in the v4 spec.
There were two bugs here, one of which hid the other:
- Only one offset would have a value, but we dereferenced both.
- We consumed a token whether it was a valid offset or not.
This allows us to remove one raw Web::Page& member. Or rather, it
becomes a JS::NonnullGCPtr that we trace like anything else. :^)
Co-Authored-By: Andreas Kling <kling@serenityos.org>
This is a first step towards removing the various Page& and Page*
we have littering the engine with "trust me bro" safety guarantees.
Co-Authored-By: Andreas Kling <kling@serenityos.org>
This is a first step towards simplifying the ownership model of
Web::Page. Soon Web::Page will store its WebClient as a
NonnullGCPtr to help solve lifetime issues of the client being
destroyed before the page.
Given that we have a glyph run where the position of each glyph is
calculated for text fragments during layout, we can reuse it to avoid
this work during painting.
Pages like the new tab page, error page, etc. all belong solely to
Ladybird, but are scattered across a couple of subfolders in Base. This
moves them all to Base/res/ladybird.
If one profile uses PCSXYZ and the other PCSLAB as connection space,
we now do the necessary XYZ/LAB conversion.
With this and the previous commits, we can now convert from profiles
that use PCSLAB with mAB, such as stress.jpeg from
https://littlecms.com/blog/2020/09/09/browser-check/ :
% Build/lagom/icc --name sRGB --reencode-to serenity-sRGB.icc
% Build/lagom/bin/image -o out.png \
--convert-to-color-profile serenity-sRGB.icc \
~/src/jpegfiles/stress.jpeg
ICC profiles work by transforming from the input color space
(one of many: RGB, CMYK, YUV, etc) to a "profile connection space" (PCS)
and then from there to the output color space.
However, there's not one but two possible profile connection spaces,
PCSXYZ and PCSLAB. The matrix/curve tags can only be used with PCSXYZ,
but the mAB, mBA, mft1, mft2 tags can be used with PCSLAB as well.
The PCSLAB encoding has L going from 0 to 100 and ab from -128 to 127,
instead of from 0 to 1. So they need to be scaled up at the end.
That's also the reason for the "mystery conversion factor": PCSXYZ
doesn't go from 0 to 1 either, but from 0 to 65535/32768, per ICC v4
6.3.4.2 General PCS encoding, Table 11 - PCSXYZ X, Y or Z encoding.
Between input and output are various curves (and the CLUT) that
have domain and range of 0..1. For these, the color has to be linearly
scaled to 0..1 before the curve and back to the actual range after
the curve. Doing that back-to-back is a no-op, so scaling back at
the very end is sufficient.
We will need to use ColorSpace in TagTypes.h, and it can't include
Profile.h.
Also makes Profile.cpp a bit smaller.
No behavior change, pure code move.
This allows a limited amount of DOM manipulation through the Inspector.
Users may edit node tag names, text content, and attributes. To initiate
an edit, double-click the tag/text/attribute of interest.
To remove an attribute, begin editing the attribute and remove all of
its text. To add an attribute, begin editing an existing attribute and
add the new attribute's text before or after the existing attribute's
text. This isn't going to be the final UX, but works for now just as a
consequence of how attribute changes are implemented. A future patch
will add more explicit add/delete actions.
This adds APIs to allow Ispector clients to:
* Change a DOM text or comment node's text data.
* Add, replace, or remove a DOM element's attribute.
* Change a DOM element's tag.
After commit ff48b7333c, we remove shadow
roots from elements that are removed from the DOM. Setting a node's
shadow root to null also sets that shadow root's host to null. Thus, the
comment in Node::is_shadow_including_descendant_of that assumes the host
is always non-null is not true.
The test added here would previously crash when interacting with a node
that is a descendant of a removed shadow root.
