In order to reduce our reliance on __builtin_{ffs, clz, ctz, popcount},
this commit removes all calls to these functions and replaces them with
the equivalent functions in AK/BuiltinWrappers.h.
Now indexes by total bytes per glyph to account for changes made
to row's pointer type in 3ca00c8. Fixes glyphs not showing and
saving correctly in FontEditor.
Removes the concept of Type enumeration in favor of a bitmask which
represents 544 potential byte ranges of 256 characters per bit,
supporting the current unicode code point set (0x0000-0x10FFFF).
Range positions are indexed in a vector for code point lookup and
conversion.
Co-authored-by: Lynn <lynn@foldr.moe>
This adds the ALWAYS_INLINE attribute to unicode_view_width. Also, it
cleans up the BitmapFont::view() code a little bit. This should help
performance of this hot code. Because the call to the width() methods is
a virtual dispatch, it doesn't help to inline the width() methods
themselves.
Previously calculating multiline text width would return invalid value,
this change makes it so that we are returning the longest line width.
We are now also reusing same width() implementation for both UTF-8 and
UTF-32 strings.
When building userland with UBSAN enabled (#7434), we were getting
spammed to death by unaligned access errors.
Fix these by adding 2 bytes of padding to the FontFileHeader struct,
and adjusting all our font files to match the new format. :^)
SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
Since we were always saving the glyph widths array to the font file, we
now also always load it, even on (which also simplifies the logic a bit)
fixed width fonts. We also set it initially to 0 instead of the default
fixed width, which allows us to use it to check for glyph presence in
both fixed width and variable width fonts.
This prevents the undefined behaviour that would come up as a result of
doing so. (For example: opening "infinite" devices like /dev/full will
result in an infinite loop until exhaustion of memory)
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED)
Since all of these checks are done in release builds as well,
let's rename them to VERIFY to prevent confusion, as everyone is
used to assertions being compiled out in release.
We can introduce a new ASSERT macro that is specifically for debug
checks, but I'm doing this wholesale conversion first since we've
accumulated thousands of these already, and it's not immediately
obvious which ones are suitable for ASSERT.
This adds a new structure 'Typeface' to the FontDatabase that
represents all fonts of the same family and variant.
It can contain a list of BitmapFonts with varying size but of
the same family and weight or a pointer to a single TTF font
for all sizes of this Typeface.
