The name-to-section lookup table was only used in a handful of places,
and none of them were calling it nearly enough to justify building
a cache for it in the first place. So let's get rid of it and reduce
startup time by a little bit. :^)
It's a lot faster to iterate the GNU hash tables if we don't have to
compute the length of every symbol name before rejecting it anyway while
comparing the first character. :^)
When performing a global symbol lookup, we were recomputing the symbol
hashes once for every dynamic object searched. The hash function was
at the very top of a profile (15%) of program startup.
With this change, the hash function is no longer visible among the top
stacks in the profile. :^)
This logging mode was unusable anyway since it spams way too much.
The dynamic loader is in a pretty good place now anyway, so I think
it's okay for us to drop some of the bring-up debug logging. :^)
Also, we have to be careful with dbgln_if(FOO_DEBUG, "{}", foo())
where foo() is something expensive, since it might get evaluated
even if !FOO_DEBUG.
We implement this by adding a BlockBox::is_scrollable() helper,
and then ignoring wheel events for non-scrollable boxes.
Thanks to FireFox317 for pointing this out! :^)
This is rather crude, but you can now use the mouse wheel to scroll up
and down in block-level boxes with clipped overflowing content.
There's no limit to how far you can scroll in either direction, since
we don't yet track how much overflow there is. But it's a start. :^)
We now apply a paint-time clip to the padding rect of a BlockBox before
painting its inline-level children. This covers some of the behavior
we want from "overflow: hidden" etc but is far from a complete solution.
Handling crashes synchronously is finicky since we're modifying the
m_client_state struct while in a callback lambda owned by it.
Let's avoid all the footguns here by simply using deferred_invoke()
and handling the crash on next event loop iteration instead.
For example, navigating File Manager to a directory that contains a vaild BMP file that
uses a palette, this code would end up trying to create an indexed thumbnail.
However, Painter asserts that the thumbnail that we paint on is *not* indexed,
usually crashing File Manager.
Partially fixes#5299, as it now crashes somewhere else.
This should really be a WindowProxy? but since we don't have anything
representing that concept yet, let's just expose the Window object
directly so document.defaultView.foo works. :^)
FileManager, cp, mv, rm had some duplicated code, implementing basic
file management operations. This patch creates adds functions that try
to provide an interface suited for all these programs, but this patch
does not make them be used throughout the Userland.
They are added to Core::File following the example of functions such as
read_link/real_path_for.
Don't fire the on_terminal_size hook while we're in relayout.
This fixes the terminal window flopping around during interactive
resizing. (It was mostly noticeable if something else was hogging
the CPU at the same time.)
These were forgotten in the last LibLine commit, any changes to m_buffer
not going through insert() and remove_at_index() should also be updating
these.
Fixes#5440.
Route the ScrollBar's wheel event to the ScrollableWidget so it can
handle it itself. This allows it to handle it consistently (e.g.
speed) when the cursor is hovering the scroll bars rather than the
widget's contents.
Fixes#5419
Let's use a stronger type than void* for this since we're talking
specifically about a virtual address and not necessarily a pointer
to something actually in memory (yet).
It was very confusing how these functions used the "undefined" state
of Symbol to signal lookup failure. Let's use Optional<T> to make things
a bit more understandable.
