Commit Graph

82 Commits

Author SHA1 Message Date
Tyler Denniston
04e03bc181 [svg] Convert stop-color and stop-opacity to presentation attrs
These are somewhat the first presentation attributes of their kind,
in that they are non-inherited but also not applied via canvas layers.

Implementation-wise the main difference is that these attributes are
not propagated through the fInherited field of the render context's
presentation attribute list.

Change-Id: I0909507b0ecbd21732b3f80c46a343f5a0a9bf7a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/340661
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
2020-12-09 21:37:17 +00:00
Tyler Denniston
7416571f4e [svg] Split out SkSVGColor from paint
This color type will be shared in paint, stop-color, and flood-color
attributes (mainly so they can use 'currentColor').

Change-Id: Ib4200ea729a91a0db5da069c68d64e5e8e3f5010
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/340617
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
2020-12-09 21:28:07 +00:00
Florin Malita
9c1f1be078 [svg] xml:space support
Add xml:space attribute and implement related white space filters.

(https://www.w3.org/TR/SVG11/text.html#WhiteSpace)

Bug: skia:10840
Change-Id: I52fda50fae1cd7cf8b0dd7c1a2ee2e667ffa947b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/342299
Reviewed-by: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
2020-12-09 20:07:25 +00:00
Florin Malita
7dc984aff0 [svg] Text shaping and layout
Introduce proper text shaping via SkShaper/drawTextBlob (to replace
SkTextUtils::DrawString).

Also add basic text layout support (text chunk alignment and default
fragment advances -- see [1]).

[1] https://www.w3.org/TR/SVG11/text.html#TextLayoutIntroduction

Bug: skia:10840
Change-Id: I246f899d2926d1e365dac06b414c8e1ab4371e1e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/341736
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
2020-12-08 20:48:43 +00:00
Florin Malita
512ff75a0b [svg] Initial <tspan> support
Introduce classes to support text node nesting:

  - TextContainer -- base class for nestable text containers
    (<text>, <tspan> etc)
  - TextLiteral -- actual text string/payload

Example structure mapping:

  <text>Foo<tspan>Bar</tspan>Baz</text>

  TextContainer[text]
    TextLiteral["Foo"]
    TextContainer[tspan]
      TextLiteral["Bar"]
    TextLiteral["Baz"]

Also add text layout state (SkSVGTextContenxt) to SkSVGRenderContext.
This will be used to track layout across a text subtree.

For now we don't touch rendering, so the output is quite garbled for
non-trivial text (no advance propagation -> things draw on top of each
other).

Bug: skia:10840
Change-Id: Ic6d3990ec8635b586f5d3d226be070fbf134e391
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/341236
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
2020-12-07 15:29:19 +00:00
Tyler Denniston
041f6656dc [svg] Remove kInherit from several SVG types
We can now remove kInherit from all of the SVG types, but this CL does
just a few to get us started / prove the concept.

SkSVGPaint, SkSVGClip and SkSVGLineCap now do not contain kInherit as an
enum value. Also, SkSVGLineCap (and eventually others) can be a bare
enum class now.

Change-Id: I7de001459bcb1f5586d66b975f92fecedb125dde
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/335827
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
2020-12-03 17:36:54 +00:00
Tyler Denniston
4c6f57a23e [svg] Use new code path for rest of presentation attrs
This is another necessary step in order to remove kInherit from all of
the base SVG type enums.

Change-Id: I2185e744f7b27369f7bad36591f896d3a9982b42
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/335817
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-11-30 21:27:04 +00:00
Florin Malita
9a5aa0a295 [svg] Handle zero-radius radial gradients
Per [1]:

"A value of zero will cause the area to be painted as a single color
using the color and opacity of the last gradient stop."

[1] https://www.w3.org/TR/SVG11/pservers.html#RadialGradientElementRAttribute

Bug: skia:10981
Change-Id: I5c4c8444c4dd72d2224b1d8b2536e7aa8c1f4712
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337180
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
2020-11-22 19:12:10 +00:00
Tyler Denniston
79832e3151 [svg] Parse "inherit" generically for SkSVGProperty
This generic parsing will allow us to later remove kInherit and
"inherit" parsing from all other specific SVG types.

Also convert "filter" presentation attribute to new-style parsing
for compatibility with the setter.

Change-Id: Id917e12d77cdefb1a8f1404cac1e0c4e486d8b53
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/335660
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
2020-11-18 16:51:55 +00:00
Tyler Denniston
75c38f94ef [svg] Add SkSVGProperty class for presentation attributes
This CL adds a new SkSVGProperty<T,B> class and uses it instead of
SkTLazy for the presentation attributes. Ideally this will form the
foundation for improvements to our presentation attribute parsing
as well as correctness for inherited/non-inherited properties.

Change-Id: Ie1cdb3db9674c55376e127cc1a8b8cb303a1bd13
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/334837
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-11-17 18:11:24 +00:00
Florin Malita
7006e15df5 [svg] Allow clients to pass a custom SkFontMgr
Introduce a Builder helper and plumb the client-provided SkFontMgr for
font resolution.

Also clean up some of the legacy SkSVGDom factories.

Bug: skia:10840
Change-Id: I6e1eabe7c257cb75dfdb5bf67054f93f25769027
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/333577
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
2020-11-11 01:51:44 +00:00
Tyler Denniston
a0a5146ba9 [svg] Use new parsing for gradient classes
- Added new SVG_OPTIONAL_ATTR macro for lazy properties
- Added SkSVGIRI type -- we need explicit types now to be able to
  dispatch via the templated parse function
- Converted several attribute parse functions to templated version

Change-Id: I270d35983083f368e36afd96a62c768161d49942
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/333518
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-11-10 19:04:49 +00:00
Tyler Denniston
b25caae788 [svg] Implement feComposite, basic filter result storage
- Plumbing to store filter results by id and resolve them as inputs
  when referenced
- Added implementation of feComposite filter
- Added call to resolve input in feColorMatrix
- Bugfix to SkSVGFilterType operator==

The tests filters-color-01-b and filters-composite-03-b should now be
passing.

Bug: skia:10841
Change-Id: I2cd099c60ac21710f25184806c5cc537656b42af
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/332723
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-11-10 14:00:56 +00:00
Florin Malita
8c42567377 [svg] Convert most presentation attributes to new style parsing
Change-Id: Ib430ce05f7e336ae82a51ee45194338e90d77c58
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/332751
Commit-Queue: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
2020-11-06 19:29:54 +00:00
Tyler Denniston
70bb18d7c9 [svg] Implement feColorMatrix filter
Supporting this filter will also allow us to start implementing and
testing the filter result DAG via the filters-color-01-b test. That test
is one of the simplest that involves filter result storage, so it's a
good candidate to start with.

Bug: skia:10841
Change-Id: Id8317ccfb78031cc6af83c9f3e3f382dcb6dee98
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/332599
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-11-06 18:40:24 +00:00
Florin Malita
401321d98e [svg] Minor parser tweaks
- remove the custom-func SkSVGAttributeParser::parse version and always
  dispatch via SkSVGAttributeParser::parse<T>(T*) - this should
  avoid adding any other parse helper declarations in the future
- relocate the turbulence parse helpers to SkSVGAttributeParser (while
  keeping the definition in SkSVGFETurbulence.cpp)
- update ParseResult initialization to use move semantics

Change-Id: I8ed9811671a6fbc5971f9d1f14e7b9c07da7dec0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/332540
Commit-Queue: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
2020-11-05 17:12:06 +00:00
Tyler Denniston
57154998a8 [svg] Add plumbing for bottom-up attribute parsing
One significant source of boilerplate in the SVG frontend is the
plumbing to ensure type safety all the way down from the XML layer to
the SkSVGNode layer. This is mostly an artifact of the top-down parsing
approach currently used by the SkDOM -> SkSVGDom building process.

One way to help remove some boilerplate is to perform attribute parsing
bottom-up, where each SVG node knows how to parse and populate its own
attribute values from a string-valued KV pair.

Additionally, bottom-up parsing allows us to support the case of the
same SVG attribute name having different meanings on different nodes
(e.g. the "type" attribute has different meaning on <feTurbulence>
versus <feColorMatrix>).

This CL adds some initial work to start us down that road, and ports the
attributes previously added for <feTurbulence> to use the new code path.

Change-Id: I2973cfab96891475d05ebf1228117626ca48ef4d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/331477
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-11-04 21:48:03 +00:00
Tyler Denniston
dada960d79 [svg] Add feTurbulence filter (incomplete)
This was the simplest one to start with. I need to add support for the
"filter effect subregion" in order to handle tile stitching property,
so this isn't quite complete. But I believe this is enough for the
basic filters-turb-01-f test to pass, which gives us a baseline for
further filter work.

Summary of changes:
- Added attribute type and parsing for SVG integer datatype
- Added new node class for feTurbulence
- Added several new properties and parsing for feTurbulence

Bug: skia:10841
Change-Id: I8c877a5e1a837bfd527782253062eeb58febdde6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/330621
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-11-03 15:41:41 +00:00
Tyler Denniston
b5e29be9c4 [svg] New layer for image filter if one is set
Prior to rendering a node, check the filter presentation attribute and
create a new canvas layer with a corresponding SkImageFilter set.

Also added the computation of the filter effect region and added a naive
(and incomplete) construction of the image filter DAG for a
<filter> element.

Bug: skia:10841
Change-Id: Ie94299757e059c39540ad316cddf438df5726d97
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/330619
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-11-02 21:54:25 +00:00
Tyler Denniston
df208a341b [svg] Add several skeleton classes for filters
Added:

- SkSVGFilter: This corresponds to a <filter> element. Also added some
  of the attributes of this element.
- SkSVGFe: This will be the base class of all <fe*> elements.
- SkSVGFilterContext: This will hold the contextual mapping of string id
  -> image filter result, for constructing pipelines.

Bug: skia:10841
Change-Id: I15a29d39411a6255ab4e11f022baa10554b2bce6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/330618
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-10-30 20:41:41 +00:00
Tyler Denniston
b3cafbc45b [svg] Add 'filter' presentation attribute and parsing
Not yet used by anything.

Bug: skia:10841
Change-Id: I6ed0a434cf670d73f06eaf0bbfe70d727ffe4950
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/330617
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-10-30 19:50:11 +00:00
Tyler Denniston
30e327e19e [svg] Rename gradient units type to object bounding box units
It turns out that "userSpaceOnUse | objectBoundingBox" can be specified
as the unit type for multiple elements, such as clips, masks, filters
etc. and is not specific to gradients.

The full list:
https://www.w3.org/TR/SVG11/coords.html#ObjectBoundingBoxUnits

Bug: skia:10842
Change-Id: I995d588862fb43b9f130f0455d7af8de47046af4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/330616
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
2020-10-30 18:56:40 +00:00
Florin Malita
056385b1c6 [svg] Convert text-anchor to a presentation attribute
https://www.w3.org/TR/SVG11/text.html#TextAnchorProperty

Bug: skia:10840
Change-Id: Iff647b62243c42150e873f06215401b5e33705fd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/330125
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
2020-10-28 14:10:01 +00:00
Tyler Denniston
f548a028ce [svg] Implement gradientUnits="objectBoundingBox"
Currently only works properly when filling rects, since that is the only
node that implements bounds computation with this CL.

Summary of changes:

- Scale gradient coords by object bounds when units are
  kObjectBoundingBox.
- Make fGradientUnits protected instead of private.
- Change default value of fGradientUnits to kObjectBoundingBox, which
  is the default according to the spec.
- Change SkSVGNode::onObjectBoundingBox to take a full render context
  instead of length context.
- Implement bounds computation for SkSVGRect, SkSVGContainer and
  SkSVGUse.

Bug: skia:10842
Change-Id: I2e999985e67644e50da7f681fde190bcf4823eec
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/329223
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
2020-10-27 19:56:28 +00:00
Tyler Denniston
53281c7121 [svg] Add current node to render context
A couple of render-time decisions require knowledge of object bounding
boxes, such as gradients (whose default coordinate space is
"objectBoundingBox". This CL adds the current node being rendered to the
render context so that it can be accessed down-stack (for example, when
gradients are being resolved and added to the paint as Skia shaders).

Each node will overload the bounds computation, for now it just returns
empty bounds for all nodes. TBD if we want to cache bounds somewhere,
either inside the node object or in a separate cache.

Bug: skia:10842
Change-Id: I40061ffedcb840e4dd28dba6351421f5b4fc904b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/329221
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-10-22 21:01:04 +00:00
Florin Malita
385e74470f [svg] Add support for preserveAspectRatio
This fixes the aspect ratio for pretty much all tests.

Since we're going to rebaseline everything, also have dm use a white
background (to match other user agents).

Bug: skia:10842
Change-Id: Iab2afd61560af540539c216d1c3673f19fe0fe51
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/328982
Commit-Queue: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
2020-10-21 22:10:33 +00:00
Tyler Denniston
ab76ab40d3 [svg] Add gradientUnits attribute, value, and parsing
Specifying gradientUnits will allow gradient coordinates to be specified
relative to object bounding boxes, as seen in test 'coords-units-01-b'.

Not yet used with this CL.

Bug: skia:10842
Change-Id: I6038cf3995a94c7e3a7ac73ad8305872353a403c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/328977
Reviewed-by: Florin Malita <fmalita@chromium.org>
Auto-Submit: Tyler Denniston <tdenniston@google.com>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
2020-10-21 20:00:43 +00:00
Florin Malita
39fe8c86fa [svg] Parse text attributes
Convert font-family, font-size, font-style and font-weight to
presentation attributes, and add parsing utils.

Bug: skia:10840
Change-Id: I1acdb59bc95fe46e67ed0f499dd0732420016663
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/328436
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
2020-10-20 16:04:41 +00:00
Mike Klein
8aa0edfed2 move SkTPin to include/private
Change-Id: Ib0dc823d331a7cddc5da1d1be83136ce803a7871
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/327783
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Reed <reed@google.com>
2020-10-16 19:45:11 +00:00
Florin Malita
b3418103e9 Reland "[svg] Relocate out of experimental"
Move the SVG rendering code to modules/svg, and componentize.
Also split into include/src/utils.

As external clients still reference the old header locations,
introduce temporary forwarding headers to facilitate the migration.

This reverts commit d6cf56fd34.

TBR=

Change-Id: Ibadd7c8dc0464ec0c27841530ade0c2098305d20
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/327344
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Florin Malita <fmalita@google.com>
2020-10-16 02:32:41 +00:00
Robert Phillips
d6cf56fd34 Revert "[svg] Relocate out of experimental"
This reverts commit 6fc4106a9d.

Reason for revert: Blocking the Android roll

Original change's description:
> [svg] Relocate out of experimental
>
> Move the SVG rendering code to modules/svg, and componentize.
> Also split into include/src/utils.
>
> As external clients still reference the old header locations,
> introduce temporary forwarding headers to facilitate the migration.
>
> Change-Id: Ib289dbdcd80c16a01c47805e7242f2e08bebc165
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/326948
> Reviewed-by: Tyler Denniston <tdenniston@google.com>
> Commit-Queue: Florin Malita <fmalita@google.com>

TBR=fmalita@chromium.org,fmalita@google.com,tdenniston@google.com

Change-Id: I386cf77a15a9e1d392029804abaf937dae53f435
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/327342
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2020-10-15 18:54:18 +00:00
Florin Malita
6fc4106a9d [svg] Relocate out of experimental
Move the SVG rendering code to modules/svg, and componentize.
Also split into include/src/utils.

As external clients still reference the old header locations,
introduce temporary forwarding headers to facilitate the migration.

Change-Id: Ib289dbdcd80c16a01c47805e7242f2e08bebc165
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/326948
Reviewed-by: Tyler Denniston <tdenniston@google.com>
Commit-Queue: Florin Malita <fmalita@google.com>
2020-10-15 14:36:06 +00:00