If the Document's navigable has been destroyed since we started this
timer, or it's no longer the active document of its navigable, we
shouldn't navigate to it.
We don't need intrinsic scale factors for Gfx::Bitmap in Ladybird,
as everything flows through the CSS / device pixel ratio mechanism.
This patch also removes various unused functions instead of adapting
them to the change.
The main intention of this change is to have a consistent look and
behavior across all scrollbars, including elements with
`overflow: scroll` and `overflow: auto`, iframes, and a page.
Before:
- Page's scrollbar is painted by Browser (Qt/AppKit) using the
corresponding UI framework style,
- Both WebContent and Browser know the scroll position offset.
- WebContent uses did_request_scroll_to() IPC call to send updates.
- Browser uses set_viewport_rect() to send updates.
After:
- Page's scrollbar is painted on WebContent side using the same style as
currently used for elements with `overflow: scroll` and
`overflow: auto`. A nice side effects: scrollbars are now painted for
iframes, and page's scrollbar respects scrollbar-width CSS property.
- Only WebContent knows scroll position offset.
- did_request_scroll_to() is no longer used.
- set_viewport_rect() is changed to set_viewport_size().
This is a hack needed to preserve current behaviour after making set
viewport_rect() being not async in upcoming changes.
For example both handle_mousedown and handle_mouseup should use the same
viewport scroll offset even though handle_mousedown runs focusing steps
that might cause scrolling to focused element:
- handle_mousedown({ 0, 0 })
- run_focusing_steps()
- set_focused_element()
- scroll_into_viewport() changes viewport scroll offset
- handle_mouseup({ 0, 0 })
This closes the window at WebContent process startup where we were
relying on Gfx::FontDatabase having some resolvable value in its default
font query.
The Encoding specification maps ISO-8859-1 to windows-1252 and expects
the windows-1252 translation table to be used, which differs from
ISO-8859-1 for 0x80-0x9F.
Other contexts expect to get the actual ISO-8859-1 encoding, with 1-to-1
mapping to U+0000-U+00FF, when requesting it.
`decoder_for_exact_name` is introduced, which skips the mapping from
aliases to the encoding name done by `get_standardized_encoding`.
This was used to convert markdown into HTML for display in the browser,
but no other browser behaves this way, so let's simplify things by
removing it.
(Yes, we could implement all kinds of "convert to HTML and display" for
every file format out there, but that's far outside the scope of a
browser engine.)
The DocumentTimeline constructor used the current millisecond time to
initialize its currentTime, but that means that a newly created timeline
would always have a different time value than other timelines that have
been through the update_animations_and_send_events function.
Implements `table.get`, `table.set`, `elem.drop`, `table.size`,
and `table.grow`. Also fixes a few issues when generating ref-related
spectests. Also changes the `TableInstance` type to use
`Vector<Reference>` instead of `Vector<Optional<Reference>>`, because
the ability to be null is already encoded in the `Reference` type.
This allows searching for text with case-insensitivity. As this is
probably what most users expect, the default behavior is changes to
perform case-insensitive lookups. Chromes may add UI to change the
behavior as they see fit.
This allows the browser to send a query to the WebContent process,
which will search the page for the given string and highlight any
occurrences of that string.
This adds a `--experimental-cpu-transforms` option to Ladybird and
WebContent (which defaults to false/off).
When enabled the AffineCommandExecutorCPU will be used to handle
painting transformed stacking contexts (i.e. stacking contexts where
the transform is something other than a simple translation). The regular
command executor will still handle the non-transformed cases.
This is hidden under a flag as the `AffineCommandExecutorCPU` is very
incomplete now. It missing support for clipping, text, and other basic
commands. Once most common commands have been implemented this flag
will be removed.
This CommandExecutor is intended to provide better support for painting
stacking contexts where the transform is not a simple translation. It
is not intended to replace the CPU command executor (as its methods of
painting will likely be slower for the non-transformed case), instead,
it will function as a companion executor to handle transformations.
This is only intended to properly handle 2D transformations (skews,
rotations, scaling, etc). Full support for 3D transformations would
need further changes in LibGfx.
As it stands this is (very) incomplete and experimental, but hopefully,
this can be fleshed out to the point where it supports most common
painting commands.
This adds two new CommandResults: ContinueWithNestedExecutor and
ContinueWithParentExecutor.
ContinueWithNestedExecutor switches the command executor to the result
of calling `.nested_executor()` on the current CommandExecutor.
ContinueWithParentExecutor returns to the previous command executor
(i.e. what it was before the last ContinueWithNestedExecutor).
`Painting::paint_all_borders()` only uses `.draw_line()` for simple
borders and `.fill_path()` for more complex cases. These are both
already supported by the `RecordingPainter` so removing this command
simplifies the painting API.
Two test changes:
css-background-clip-text: Borders are now drawn via the AA painter
(which makes them closer to how they appear in other browsers).
corner-clip-inside-scrollable: Borders removed (does not change test)
due to imperceptible sub-pixel changes.
...instead of scheduling repaint timer in PageClient.
This change fixes flickering on Discord that happened because:
- Event loop schedules repainting by activating repaint timer
- `Document::tear_down_layout_tree()` destroys paintable tree
- Repaint timer invokes callback and renders an empty frame because
paintable tree was destroyed
Although refreshing is cheap, it was performed before each hit-testing
and was 2-4% in profiles on Discord and Twitter.
Now clip and scroll states are refreshed only if scroll offset has
changed.
Previously, we always cast to a HTMLInputElement when getting the value
of an auto directionality form associated element. This caused
undefined behavior when determining the directionality of an element
that wasn't a HTMLInputElement.
Previously, we assumed that all label control paintables were of type
`LabelablePaintable`. This caused a crash when clicking on a label with
a text input control.
As with all other current audio nodes we still need to wire up the
inputs and outputs so it can be properly used in an audio context - but
this is enough to implement the public IDL interface.
...instead of allocating separate BorderRadiusCornerClipper for each
executed sample/blit commands pair.
With this change a vector of BorderRadiusCornerClipper has far fewer
items. For example on twitter profile page its size goes down from
~3000 to ~3 items.
Before, this check was needed to prevent crashing when attempting to
allocate zero-size bitmap for sampled corners, which could have happened
if a corner had 0 radius in one axis.
Now, since SampleUnderCorners command is not emmited when radius is 0
in one axis, this check is no longer needed.
This reverts commit 6b7b9ca1c4b32e76e0afef6bca0cb300e615b576.
The whole corner radius is invisible if it has 0 radius in any axis, so
the reverted commit was a mistake that led to error checking during
painting command execution b61aab66d9 to
avoid crashing on attempt to allocate 0 size bitmap.
EventSource allows opening a persistent HTTP connection to a server over
which events are continuously streamed.
Unfortunately, our test infrastructure does not allow for automating any
tests of this feature yet. It only works with HTTP connections.
Supporting unbuffered fetches is actually part of the fetch spec in its
HTTP-network-fetch algorithm. We had previously implemented this method
in a very ad-hoc manner as a simple wrapper around ResourceLoader. This
is still the case, but we now implement a good amount of these steps
according to spec, using ResourceLoader's unbuffered API. The response
data is forwarded through to the fetch response using streams.
This will eventually let us remove the use of ResourceLoader's buffered
API, as all responses should just be streamed this way. The streams spec
then supplies ways to wait for completion, thus allowing fully buffered
responses. However, we have more work to do to make the other parts of
our fetch implementation (namely, Body::fully_read) use streams before
we can do this.
This adds an alternate API to ResourceLoader to load HTTP/HTTPS/Gemini
requests unbuffered. Most of the changes here are moving parts of the
existing ResourceLoader::load method to helper methods so they can be
re-used by the new ResourceLoader::load_unbuffered.
LibWeb will need to use unbuffered requests to support server-sent
events. Connection for such events remain open and the remote end sends
data as HTTP bodies at its leisure. The browser needs to be able to
handle this data as it arrives, as the request essentially never
finishes.
To support this, this make Protocol::Request operate in one of two
modes: buffered or unbuffered. The existing mechanism for setting up a
buffered request was a bit awkward; you had to set specific callbacks,
but be sure not to set some others, and then set a flag. The new
mechanism is to set the mode and the callbacks that the mode needs in
one API.
This is to avoid including any LibProtocol header in Objective-C source
files, which will cause a conflict between the Protocol namespace and a
@Protocol interface.
See Ladybird/AppKit/Application/ApplicationBridge.cpp for why this
conflict unfortunately cannot be worked around.
All painting commands except SetClipRect are shifted by scroll offset
before command list execution. This change removes scroll offset
translation for sample/blit corner commands in
`PaintableWithLines::paint` so it is only applied once in
`CommandList::apply_scroll_offsets()`.
Currently, these only work when there are no CSS transforms (as the
stacking context painting is not set up to handle that case yet). This
is still enough to get most chat/comment markers working on GitHub
though :^)
- Less allocations
- Optimization pass that skips unnecessary sample/blit corner commands
could be more effecient by ignoring corner radius clipping for empty
painting commands
Both page target bitmap and mask bitmap are always BGRA8888, so we can
use `get_pixel<StorageFormat::BGRA8888>` and
`set_pixel<StorageFormat::BGRA8888>` to avoid branching by not
checking a bitmap format.
The if statement in the dispatch implies we are in the idle state, so of
course the active time will always be undefined. If this was cancelled
via a call to cancel(), we can save the time at that point. Otherwise,
just send 0.
