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>
Add logic to adjust glyph positions based on animated tracking properties.
This adjustment is applied post-shaping (it doesn't observe the text box),
and requires line re-alignment - thus it is being processed per-line.
Change-Id: Id44a295032a48c7216f126cb02dd2d2d5cc18ae3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/220076
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Range selector's "Based On" property controls how range indices map
to glyphs: characters, characters-excluding-spaces, words, lines.
To support this feature:
- update SkottieShaper to track domain-relevant info per fragment
(fLineIndex, fIsWhitespace)
- update TextAdapter to build domain maps
(domain index -> fragment span)
- update RangeSelector to run its range indices through a domain map,
if present.
Change-Id: I80e713f6beaa2578aa0eae1d1ddae8e1e47d8d10
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/219859
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
Generalize the partial coverage logic to handle all three cases (left
edge, right edge, both edges), and remove the single-index
branch.
Also add some docs.
TBR=bungeman
Change-Id: I90af708f053d6d3eff154fc1309a5c1269a7eaed
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/219518
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
The current logic modulates the shape generator output by its fractional
coverage, ignoring constant lo/hi contributions.
But RampUp/RampDown have non-zero hi/lo constant coverage, which needs
to be accounted for.
The correct behavior is to perform a 3-way weighted average of the
lo/hi/generator, based on their relative weights.
Change-Id: Ide0ed2ae590bbce2b56c0c65008b64632b987905
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218962
Commit-Queue: Florin Malita <fmalita@chromium.org>
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
The current implementation applies constant coverage (outside selector
range) based on computed integral edges.
But the integral range is clamped to the valid index domain and its
extremes are always assumed to have partial coverage - so we never get
to constant-blit the full buffer when the interval is outside, which
can yield incorrect coverage for the first/last fragments.
Update the constant coverage logic to operate in full domain coordinates.
Change-Id: I23902674fe5e822081fb8262167511df1cc3463e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/219206
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Introduce square/ramp/triangle/round/smooth shape generators,
and use them to seed the range selector coverage pipeline.
Change-Id: Ib7b94ceecd2ccf66820f4dd2443fdd62e2ac6a1b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218828
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
Each animator can have multiple range selectors, whose combined "coverage"
modulates how the animator props compose with other/initial props.
Since there can be multiple animators with different/arbitrary selectors,
we compute independent property values for each fragment.
Supported features:
- start, end, offset, amount
- units: percentage, index
- based-on: characters-only for now
- mode: add-only for now
- shape: square-only for now
Change-Id: If7fee46ffb29e1f92542822481ed699fd0b0b521
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/218076
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
The interesting bit here is a change in glyph positioning:
AE text animator transforms are to be applied relative to the glyph position.
To support this behavior, update Shaper to externalize glyph positioning
when in fragmented mode. I.e. instead of baking glyph positions in blobs,
apply them at the scene graph transform level (such that they compose with
animated transforms correctly).
Change-Id: I9aeb5e6f8c1ec1a2c8b5351e8fc2a73d4bdf5cad
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/217556
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Limitations:
- no range selectors (applies to the whole text)
- only position, fill color and stroke color for now
Change-Id: I91e88a6107c5f66687c1c27f27a71be3914bde25
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/217386
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
In the presence of animated text properties, we want the Shaper result
glyphs to be split into separate fragments.
Add a Shaper flag to request this mode, and upate the logic to emit
one fragment per glyph, when active. Otherwise fall back to the
current/consolidated blob mode.
Change-Id: If7440e5fa1ae2f8855984d3ae4d6852b10b2316c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/216879
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Instead of committing glyphs directly to SkTextBlob buffers, accumulate
data for a full line before passing to the builder.
For now this doesn't have any effect (other than making a data copy),
but the intermediate buffer will be used for
a) post-shaping adjustments (justification, tracking?)
b) multi-blob/fragmented shape results
Change-Id: I45796ef2fd491a14322c32672137ac90138f36ef
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/216686
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
Also shuffle the search order to better match use frequency.
Change-Id: I8ba7f5474f0937aecb75215a1129b439f89a7dbf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/216357
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
In preparation for text range selectors, update Shaper and the text
adapter logic to deal with multiple text "fragments".
- Shaper::Result is now an array of (blob,pos) tuples
- TextAdapter builds an arbitrary number of scene graph nodes, based on
the Shaper fragments
Change-Id: I0f2ed86da77e9aaf22b9cb138c3a5f8f957393fe
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/216403
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
When fitting the shape result to a box, scale both the font size and
line height by the same factor.
This produces more intuitive results.
Bug: skia:9129
Change-Id: I742a952b9615216a2b68c0432b41026751099cbc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/216220
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Line height is always specified for JSON text values, there is no need
to treat as optional or have a fallback based on font metrics.
Change-Id: I468666e82dab74203fee985503c020217e0d4db8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/215829
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Introduce a new Shaper::Valign enum to support aligning the shaped text
visual bottom with the text box bottom.
This option corresponds to JSON prop sk_vj: 2.
kResizeToFit (used to be sk_vj: 2) is now bumped to sk_vj: 3.
Change-Id: Ib1621a21a42bfc21c99826e203c587a3fdc663dc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/215821
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
AE's valid frame range for a given composition/layer is
[inPoint,outPoint). That is, a given object is not active at outPoint.
https://skia-review.googlesource.com/c/skia/+/215432 started enforcing
this for layers, but the side effect is seek(1) now produces blank
frames.
This CL pins t in the [inPoint,outPoint) interval, to guarantee a valid
frame.
Change-Id: I6e0001f284b85fe733e30469a7a7947818c1e07e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/215681
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
The time argument to skottie::ImageAsset::getFrame() is expected to be relative to the in-point of the layer.
Change-Id: I9299e07af2254353e0799a827813c1bd75bdec26
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/213800
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Florin Malita <fmalita@google.com>
Introduce a new SkottieShaper VAlign option (kResizeToFit), to scale the text
size for the best box fit.
The basic idea is to perform a binary search on the font size, until
the shaped text fits snuggly within the specified box. The search is
focused on height, as horizontal fitting is assumed to be handled in
SkShaper.
Change-Id: I56269e02dda7a34e4ef3b79c205ea651b909f370
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212962
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Noticed that there was an include for <array> in there that didn't make
a lot of sense, so cleaned up the others which are hanging around from
older code which was in there.
Change-Id: I77acbb0914989e9bf67ab74dfd842a798ea592f3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206172
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
There is still a bit of manual mucking about with iwyu output to get
things nice, but the checker seems to be doing ok and the process is now
a bit easier. Will see how it goes.
This also pointed out the amount of code behind ifdefs should be
minimized by using the build system and 'constexpr if' when possible.
Change-Id: Ic63fa33c65e5ff40b58858e15fc51f27d862e20d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211349
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Parent camera layer transforms apply to the camera itself, thus
T_camera' = T_camera x Inv(T_parent)
To support this composition:
- introduce sksg::Transform::MakeInverse()
- allow selectable pre/post parent composition in
AnimationBuilder::attachMatrix3D()
Change-Id: Ie70b36e4e9bb1b32e60893df5695bdc6c0dc0d00
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/210422
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Now that no one is using the linear metrics flag directly, change the
meaning from 'no-hinting and subpixel positioning at an odd size when
measuring and just no-hinting when drawing' to meaning 'use linear
metrics'.
This also changes the font hosts to no longer use subpixel positioning
as a proxy for this value. This fixes outstanding bugs in Chromium about
getting the right metrics for hinted fonts.
Change-Id: I033b3d5ad431eba906a89cc0fefc59cd6702a02c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209174
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Herb Derby <herb@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>
Introduce sksg::LevelsColorFilter and hook into Skottie's effects builder.
Limitations:
- BM/Lottie does not export animated paramaters (static values only)
- BM/Lottie only exports the first modified channel
Change-Id: I9ef389478c2eaa0d13794abe6a8089a8b3c0c62e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206269
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
Skottie doesn't currently build with is_component_build=true. Trying to
build a DLL with skia_enable_skottie=false failed, because we ended up
with a component("skottie") that had no sources. That led to fallback
linker behavior, but no DllMain.
To solve this, and simplify things, move the skia_enable_skottie checks
to the outer scope, and simply replace all the referenced components
with empty groups when it's not enabled. Also fix some fm code that was
assuming it was always enabled.
Change-Id: I4a47d80d882e6c557ee14b34255e22e09292cc8c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/207302
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Brian Osman <brianosman@google.com>
This reverts commit 7ef3e14516.
Reason for revert: TSAN failures (HB?)
Original change's description:
> [skottie] More snug kTop Shaper alignment
>
> The current implementation relies on SkShaper ascent values for top
> text box alignment, but the results are not as visually accurate as AE
> (or Lottie).
>
> Use the computed tight bounds instead.
>
> Change-Id: I4447a834fe3cae398fc887766daa68802e7f50a5
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206684
> Reviewed-by: Ben Wagner <bungeman@google.com>
> Commit-Queue: Florin Malita <fmalita@chromium.org>
TBR=bungeman@google.com,fmalita@chromium.org
Change-Id: Icdcca2f6a7b33c8366c1118be2e842ff3978c8bd
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206911
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
The current implementation relies on SkShaper ascent values for top
text box alignment, but the results are not as visually accurate as AE
(or Lottie).
Use the computed tight bounds instead.
Change-Id: I4447a834fe3cae398fc887766daa68802e7f50a5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206684
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Some animations use humongous images which thrash Skia's resource caches
at raster time.
To avoid that, we can
1) force decoding upfront, when the animation is loaded
2) clamp the image size to something reasonable (2K^2)
Add a flag to support this operation mode, and enable for Skottie/WASM.
Change-Id: Id2f127a5200b812b87e588904393d82c80452aa1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206179
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Two issues:
1) Empirically (per AE's model), only solid layers transform the effect space.
All other layer types implement their effects ignoring the layer xform.
2) Due to the effect deferral mechanism in sksg, shader effects are
sometimes applied with a different transform than intended.
To address #1, tweak the layer builder logic to attach the effects
before/after the transform node, depending on the layer type.
For #2, track the CTM active when the shader effect is attached and undo
any intervening transformations via a local matrix when the shader is
actually applied to SkPaint.
Change-Id: I29b5a4df3b223e7da9dfc36b0d7d40055d192ac0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/205922
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Introduce a Skottie JSON extension for controlling vertical text
alignment ("sk_vj"), with a single public value for now: 1 (centered).
Refactor SkottieShaper to handle vertical adjustments based on a VAlign
enum:
kTop - the topmost line is ascent-aligned with the box top
(AE text-box behavior)
kTopBaseline - the topmost line is baseline-aligned with the top box
(AE text-point behavior)
kCenter - the text center is aligned with the box center
("sk_vj": 1, Skottie extension)
Also externalize the vertical adjustment as a text blob offset (instead
of baking into blob glyph offsets).
Change-Id: I29a414d4c6ccfafc534ca7b61f48ef96d8cff86e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/205590
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
This differed from the separate versions in that it snapped to zero.
It was also strictly worse than calling the two separate versions.
Most clients don't need the snapping, so just call the two existing
functions. For clients that need the snapping, call new variants of
each that do snap.
Change-Id: Ia4e09fd9651932fe15caeab1399df7f6281bdc17
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/205303
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Reed <reed@google.com>
