Unlike many users of HarfBuzz, the Skia shaper sets HB_BUFFER_FLAG_BOT
and HB_BUFFER_FLAG_EOT flags to inform HarfBuzz that the full context
contains the beginning and end of the paragraph so that it can treat the
beginning and end of the context specially. In reality, the EOT flag
currently does nothing and the BOT flag only has the effect of adding a
dotted circle (if the font provides it) if the first codepoint in the text
and context is a unicode mark. This behavior is generally unwanted, so
just remove it with a note to revisit this decision should HarfBuzz ever
change the effect of these flags.
Bug: skia:9618
Change-Id: I6cdf86ff3499e1321b1212d63192a4a9c5847e39
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/264686
Auto-Submit: Ben Wagner <bungeman@google.com>
Reviewed-by: Julia Lavrova <jlavrova@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Change-Id: I7c672ff6b8eb95ec8c1123a5bfdb202e1644f494
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259281
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Change-Id: I7adc1e01f4f9cec56e53e620ba4d04eae61f0b9e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/254899
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This reverts commit 1803f4ef6f.
And also fixes the primitive shaper.
Change-Id: Ieaeda5522c98d8a9e6f628b8a6cc30cf41278350
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/252929
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
This reverts commit 0f3a26dd18.
Reason for revert: Windows bots are broken
Original change's description:
> Fix empty run handling in trivial shaper iterators
>
> When the text run is of zero length the iterator starts at the end. The
> trivial itereators did not handle this case.
>
> Change-Id: Id41304500e33d821874f56ab20085cbc4b2d9b0b
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/252857
> Reviewed-by: Herb Derby <herb@google.com>
> Commit-Queue: Ben Wagner <bungeman@google.com>
TBR=bungeman@google.com,herb@google.com
Change-Id: Ia38e46ac4c04def5d374fbbce450538096d90d64
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/252923
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
When the text run is of zero length the iterator starts at the end. The
trivial itereators did not handle this case.
Change-Id: Id41304500e33d821874f56ab20085cbc4b2d9b0b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/252857
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
The intent is to allow the creation of a MakeFontMgrRunIterator which
uses the passed font's typeface as the primary typeface, but uses a
given family name and style as for the request for fallback fonts. This
allows the user to provide the actual request for the primary typeface
as opposed to making a request based on the resolved primary typeface
(which may not be the right thing to do).
To support this, the selection of language for fallback is also added.
Since this information is already in the language iterator, this change
makes the font iterator the lowest priority iterator for consume,
allowing the font iterator to rely on the current value of the language
iterator to provide the language.
In order to allow these changes to be exercised, this also adds a few
generic 'Make' methods for bidi and script. These new methods will use
the best available implementation. These are needed since the most
capable implementations may not always be available (such as on our
testing ios builds).
Change-Id: I1b8d9c9007058adcb2a26e0581d903b835a6118f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/245460
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
The CoreText version relies on undefined behavior and the DirectWrite
version makes an extra copy of the data. This fixes several issues
introduced in https://skia-review.googlesource.com/c/skia/+/229384 .
Change-Id: I29a2170465bafcf6fe7ae5ad107e85a9e882bd33
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/244721
Commit-Queue: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
The previous code always reported the runs on the lines as being full
runs even when they were actually partial runs.
Change-Id: Icc746a7bdeebdde6c4979d8cb438426d21246d57
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/241881
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
SkFunctionWrapper was made to be a simple abstraction over existing
resource release functions which generally follow a specific pattern of
returning void and taking a pointer to the underlying type. However,
this has been observed to be an unnecessary limit. This makes it more
generic while also making the call sites a little less brittle.
This change also uncovered an issue in msvc v19.20 to v19.22, see
https://developercommunity.visualstudio.com/content/problem/698192/in-templateusing-decltype-is-void.html
To work around this, several otherwise redundant '&' are used.
There was an attempt to take references to functions instead of pointers
to functions which greatly simplifies the intermediate wrappers.
However, that uncovered another issue in msvc, see
https://developercommunity.visualstudio.com/content/problem/699878/function-to-pointer.html
Change-Id: I54ab945ed9d9cfd0204d4d6650c2fde47cc9e175
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/235105
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
If the nominal_glyphs callback returns a value less than 'count'
HarfBuzz will process the rest of the buffer with the nominal_glyph
callback and attempt to find glyphs through NFC and space synthesis. It
may be preferable in the future to tweak this behavior, since this is
effectively modifying the font.
Change-Id: If2deeb643c5e636d18e914eb7ee32518f86077f5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/231110
Reviewed-by: Julia Lavrova <jlavrova@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Skottie already takes an optional client fontmgr at load time, but
SkShaper(HB) currently uses the default fontmgr for fallback.
Plumb the Skottie font manager all the way to SkShaper.
This should give clients more control over font fallback, instead of
relying on the default SkFontMgr.
Change-Id: I3df16b3924a68d232573e25f9e526f523fc1dc08
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/230122
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner aka dogben <benjaminwagner@google.com>
In addition to checking .fp files, this ought to make this bot now also
check that our .gn files are formatted and our #includes are consistent
with rewrite_includes.py.
Some .gn files needed formatting; you can see the failure caught on PS 4.
Cq-Include-Trybots: skia.primary:Housekeeper-PerCommit-CheckGeneratedFiles
Change-Id: Ia6669581406212c986da81f2521e4e9d8d3eadb4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/229802
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
This is a reland of 10ad0b9b01
Original change's description:
> SkParagraph
>
> Change-Id: I0a4be75fd0c18021c201bcc1edfdfad8556edeff
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/192100
> Reviewed-by: Ben Wagner <bungeman@google.com>
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Julia Lavrova <jlavrova@google.com>
Change-Id: I46cf43eae693edf68e45345acd0eb39e04e02bfc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/219863
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Julia Lavrova <jlavrova@google.com>
This at least documents the current behavior. There exists tension between
users who just want positions and those who also want advances, which
requires this to be overly clever. Perhaps a better solution can be
found.
Change-Id: Ic2166ca294003da3325a0fe068ef84cdef9f804d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/217259
Commit-Queue: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Change-Id: I928ba956c1ff038332d7c7497fe5fc0c297f4f22
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/217140
Commit-Queue: Ben Wagner <bungeman@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
The assert here was intended to catch the case where a font run iterator
produced a font without specifying a typeface. This should never happen.
However, it is currently fine for the user to pass in a font without
specifying a typeface, which really means they don't care.
Change-Id: Ib63430142b9a05b4f2f8603e7a56a0ac09fa219f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/216874
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
This adds and SkShaper which doesn't wrap or re-order. This allows for
users to write their own implementations of shape-then-wrap logic.
Change-Id: I8bd8931ac9534c33883fc303be25f379c02da4b0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/213829
Reviewed-by: Julia Lavrova <jlavrova@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Current strategy: everything from the top
Things to look at first are the manual changes:
- added tools/rewrite_includes.py
- removed -Idirectives from BUILD.gn
- various compile.sh simplifications
- tweak tools/embed_resources.py
- update gn/find_headers.py to write paths from the top
- update gn/gn_to_bp.py SkUserConfig.h layout
so that #include "include/config/SkUserConfig.h" always
gets the header we want.
No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
These changes let us build a non-official component build on Windows,
using either MSVC or clang
Change-Id: Ia3279aa19e007e70ff28925ff70a0bfe8144d96f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/207307
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Similar to the Skottie refactor that just landed, this avoids having an
empty component when shaper is disabled (which turns into a DLL with no
sources, and a missing DllMain). I think this pattern of having modules
expose the same components as empty groups is simpler (and also fixes
the fact that only two of N references in top-level BUILD.gn were
guarded). Also, no one is using the define?
Change-Id: I9d25c1cfbd42336874f4428bf61f3e34a4a18d3c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/207303
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This provides a way to re-use the existing basic shaping iterators.
Change-Id: I148dd513dcd01381301e7835672d0d605c1c462b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/205933
Reviewed-by: Julia Lavrova <jlavrova@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
This allows for using non-contiguous input in a future api for shaper.
This change forces cleanup of error handling when doing low level
shaping, which prompts cleaning up the correct shaper code to make the
control flow more obvious.
Bug: skia:8906
Change-Id: If084e0dd88e2f3a9651551ceeff87480e87fb998
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/203465
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Ben Wagner <bungeman@google.com>
`gn check` passes. We will work towards removing `check_includes = false`.
Change-Id: I0ab396fadaf31a166921bdea334b2cfedca23dcd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/195363
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
This should allow shaper to run on the no-deps bot.
Change-Id: I2515875d4e9b428681c20877630b904c3229ecc5
Reviewed-on: https://skia-review.googlesource.com/c/194420
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Depends on https://skia-review.googlesource.com/c/skia/+/186870
It's optional at build time, which is good given that
it adds about 2MB of uncompressed size (from 4.3 MB to 6.4 MB)
Bug: skia:
Change-Id: I5f54ad628b735c3bc880e917394fb27d16849ebe
Reviewed-on: https://skia-review.googlesource.com/c/187924
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
The interface here is not ideal, but there will need to be some build
clean-up before it can be changed.
Change-Id: Ic4d55634405f4c8d9c194e4e6f368287c9669dcd
Reviewed-on: https://skia-review.googlesource.com/c/193036
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
This makes a user check some postconditions of shaping.
Change-Id: Ifa34bbb9bd8baf18c830d58d99eee9c82811125a
Reviewed-on: https://skia-review.googlesource.com/c/193038
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Need and 'in range' operator.
Change-Id: I57cd6631376a6e857054b4712a70b2aa75a53223
Reviewed-on: https://skia-review.googlesource.com/c/192823
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
It isn't used anymore.
Change-Id: I4079ff9944aa2483a0cd42130d0e69fb98935731
Reviewed-on: https://skia-review.googlesource.com/c/192820
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
This allows for SkTypefaces not backed by OpenType data to get minimal
shaping through HarfBuzz.
Change-Id: I0e4d69627500e0aff40c8989d3734597bfa1f8d6
Reviewed-on: https://skia-review.googlesource.com/c/192681
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Still some code hanging on from optimizing for SkTextBlob.
Bug: skia:8420
Change-Id: I947a9ff691fb1fbcb82934c5597e5db11c12f013
Reviewed-on: https://skia-review.googlesource.com/c/192683
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
New tests that use skshaper should hide behind SK_USING_SKSHAPER define.
Change-Id: Ifcd726d931e3eb1ff209085a63e8129c9cd5596d
Reviewed-on: https://skia-review.googlesource.com/c/192026
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
In the event that no fallback font can be found to handle a character,
just keep using the current font.
Change-Id: I93c852dc8ee5eaa868e48a5ce3e8298a642b15c7
Reviewed-on: https://skia-review.googlesource.com/c/191661
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
This essentially resurects the old SkTextBox code into a primitive
shaper.
Change-Id: Ia4d1a5ab3d1c7d410962b49ac3891298655c7dc4
Reviewed-on: https://skia-review.googlesource.com/c/191562
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
