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25 commits

Author SHA1 Message Date
Nico Weber
41eca52b50 LibGfx/OpenType: Tweak Font::try_load_from_externally_owned_memory()
It now takes an Options object instead of passing several default
parameters.

No behavior change.
2024-02-21 13:38:33 +01:00
Ali Mohammad Pur
5e1499d104 Everywhere: Rename {Deprecated => Byte}String
This commit un-deprecates DeprecatedString, and repurposes it as a byte
string.
As the null state has already been removed, there are no other
particularly hairy blockers in repurposing this type as a byte string
(what it _really_ is).

This commit is auto-generated:
  $ xs=$(ack -l \bDeprecatedString\b\|deprecated_string AK Userland \
    Meta Ports Ladybird Tests Kernel)
  $ perl -pie 's/\bDeprecatedString\b/ByteString/g;
    s/deprecated_string/byte_string/g' $xs
  $ clang-format --style=file -i \
    $(git diff --name-only | grep \.cpp\|\.h)
  $ gn format $(git ls-files '*.gn' '*.gni')
2023-12-17 18:25:10 +03:30
Sam Atkins
54d0aafff0 LibGfx: Use FourCC as OpenType::Tag type
The one deviation from the spec here is to use this in the WOFF
TableDirectoryEntry's tag field. However, *not* making that a Tag made
a lot of things more complicated than they need to be.
2023-11-24 08:42:46 +01:00
Tim Schumacher
a2f60911fe AK: Rename GenericTraits to DefaultTraits
This feels like a more fitting name for something that provides the
default values for Traits.
2023-11-09 10:05:51 -05:00
MacDue
50d33f79fa LibGfx: Allow extracting paths from fonts and add Gfx::Path::text()
This updates fonts so rather than rastering directly to a bitmap, you
can extract paths for glyphs. This is then used to implement a
Gfx::Path::text("some text", font) API, that if given a vector font
appends the path of the text to your Gfx::Path. This then allows
arbitrary manipulation of the text (rotation, skewing, etc), paving the
way for Word Art in Serenity.
2023-11-05 02:46:46 +01:00
Andrew Kaster
86ce502ae2 LibGfx+Utilities: Add helpers to load vector fonts from Core::Resources 2023-10-29 13:12:28 -06:00
Tim Ledbetter
4b5b8fc564 LibGfx: Use safe version of count_leading_zeroes() in WOFF parsers
This guards against undefined behavior when zero is given as an
argument.
2023-10-27 07:13:51 +02:00
Tim Ledbetter
7096ea82f9 LibGfx: Use count_leading_zeroes to calculate nearest power of 2
This removes the possibility of an infinite loop.
2023-10-26 08:39:26 +02:00
Tim Ledbetter
6e4c97a328 LibGfx/WOFF: Return error if numTables is 0
This is consistent with WOFF2.
2023-10-26 08:39:26 +02:00
Tim Ledbetter
c2112cde76 LibGfx/WOFF: Ensure header totalSfntSize matches expected value 2023-10-24 07:29:09 +02:00
Tim Ledbetter
7ee09ca49d LibGfx/WOFF: Avoid overflow in table directory search range
This commit limits `WOFF::Header::num_tables` to 4096. This limitation
is not explicitly mentioned in the specification, but allowing numbers
larger than this results in an overflow when calculating
`search_range` and `range_shift`.
2023-10-24 07:29:09 +02:00
Sam Atkins
9f93ae4bfc LibGfx: Use offset table structs when reading WOFF font data 2023-10-22 19:42:22 +02:00
Sam Atkins
e7fe377501 LibGfx: Use a Stream to read WOFF font data
This lets us read structs directly from the data, instead of having to
construct them from manual offsets.
2023-10-22 19:42:22 +02:00
Andreas Kling
545d8336b8 LibGfx: Convert Font APIs to return String instead of DeprecatedString 2023-09-06 11:29:03 -04:00
Tim Schumacher
8a853278d0 LibCompress: Port ZlibDecompressor to AK::Stream 2023-08-23 12:03:37 +01:00
Andreas Kling
924d23353e LibGfx/OpenType: Support one specific type of embedded color bitmaps
This patch adds support for index format 1 and image format 17.
This is enough to get Noto Color Emoji working.
2023-03-06 10:52:55 +01:00
Andreas Kling
e8cc1a4373 LibGfx: Prepare the paint code for fonts whose glyphs are color bitmaps
This patch does three things:
- Font::has_color_bitmaps() (true if CBLC and CBDT are present)
- Glyph now knows when its bitmap comes from a color bitmap font
- Painter draws color bitmap glyphs with the appropriate scaling etc
2023-03-06 10:52:55 +01:00
Andreas Kling
bfe081caad LibGfx: Fix const-correctness issues 2023-02-21 00:54:04 +01:00
Aliaksandr Kalenik
1f4106842d LibGfx: Pass font width to FontDatabase::get()
Width need to be passed to `FontDatabase::get()` to resolve font name
unambiguously.
2023-02-05 08:06:06 +00:00
MacDue
ada48a1daf LibGfx: Add ability to request glyphs at subpixel offsets to fonts
This adds the option to pass a subpixel offset when fetching a glyph
from a font, this offset is currently snapped to thirds of a pixel
(i.e. 0, 0.33, 0.66). This is then used when rasterizing the glyph,
which is then cached like usual.

Note that when using subpixel offsets you're trading a bit of space
for accuracy. With the current third of a pixel offsets you can end
up with up to 9 bitmaps per glyph.
2023-01-05 12:09:35 +01:00
Tim Schumacher
23a9d62f39 LibCompress: Rename Compress::Zlib to Compress::ZlibDecompressor
Because that's what it is, even if it mainly relies on
`DeflateDecompressor` to do the heavy lifting.
2023-01-03 10:01:09 +00:00
Andreas Kling
f982400063 LibGfx: Rename TTF/TrueType to OpenType
OpenType is the backwards-compatible successor to TrueType, and the
format we're actually parsing in LibGfx. So let's call it that.
2022-12-21 08:44:22 +01:00
Linus Groh
6e19ab2bbc AK+Everywhere: Rename String to DeprecatedString
We have a new, improved string type coming up in AK (OOM aware, no null
state), and while it's going to use UTF-8, the name UTF8String is a
mouthful - so let's free up the String name by renaming the existing
class.
Making the old one have an annoying name will hopefully also help with
quick adoption :^)
2022-12-06 08:54:33 +01:00
sin-ack
e5f09ea170 Everywhere: Split Error::from_string_literal and Error::from_string_view
Error::from_string_literal now takes direct char const*s, while
Error::from_string_view does what Error::from_string_literal used to do:
taking StringViews. This change will remove the need to insert `sv`
after error strings when returning string literal errors once
StringView(char const*) is removed.

No functional changes.
2022-07-12 23:11:35 +02:00
Simon Wanner
bf6d64c199 LibGfx: Add a loader the Web Open Font Format (WOFF)
This format is 'just' a zlib compressed wrapper for TrueType/OpenType
which makes implementing it rather convenient. :^)
2022-04-09 23:48:18 +02:00