Bug 269477 – auto-start-reverse WPT is failing

• Status: NEW
• Component: SVG

[Karl Dubost]

In expose auto-start-reverse enum value
https://bugzilla.mozilla.org/show_bug.cgi?id=1685543

related to https://github.com/w3c/svgwg/issues/424

> RESOLVED: Where SVG 2 has added a new attribute value for an attribute that has an existing DOM enumeration, we will add matching new enumeration values
https://github.com/w3c/svgwg/issues/424#issuecomment-387176205

The spec is:
https://svgwg.org/svg2-draft/painting.html#InterfaceSVGMarkerElement

Currently Safari fails:
https://wpt.fyi/results/svg/types/scripted/SVGAnimatedEnumeration-SVGMarkerElement.html


What the test is doing. 

function createMarker() {
  let markerElement = document.createElementNS("http://www.w3.org/2000/svg", "marker");
  markerElement.setAttribute("markerUnits", "userSpaceOnUse");
  markerElement.setAttribute("orient", "auto");
  return markerElement;
}



  let markerElement = createMarker();
  // Switch to 'auto-start-reverse' value - by modifying orientType.
  markerElement.orientType.baseVal = SVGMarkerElement.SVG_MARKER_ORIENT_AUTO_START_REVERSE;
  assert_equals(markerElement.orientAngle.baseVal.value, 0);
  assert_equals(markerElement.orientAngle.baseVal.unitType, SVGAngle.SVG_ANGLETYPE_UNSPECIFIED);
  assert_equals(markerElement.orientType.baseVal, SVGMarkerElement.SVG_MARKER_ORIENT_AUTO_START_REVERSE);
  assert_equals(markerElement.getAttribute('orient'), "auto-start-reverse");
}, "Test auto-start-reverse");

[Karl Dubost]

but it seems the spec has not been updated yet?!
I don't see SVG_MARKER_ORIENT_AUTO_START_REVERSE

[Ahmad Saleem]

Some WPTs:

> marker-orient-001.svg
> SVGAnimatedEnumeration-SVGMarkerElement.html
> animate-marker-orient-from-auto-to-auto-start-reverse.html

___

NOTE - from `See Also` - we do support it but I think we don't have all the hooks configured properly or something else. Still need to investigate but adding information here as note keeping.

[Karl Dubost]

The goal is to add
  const unsigned short SVG_MARKER_ORIENT_AUTO_START_REVERSE = 3;
to the idl file
https://searchfox.org/wubkat/source/Source/WebCore/svg/SVGMarkerElement.idl

The equivalent on Gecko 
https://searchfox.org/mozilla-central/source/dom/webidl/SVGMarkerElement.webidl

But to make sure to not break anything too. So probably a couple of modifications in the process. 

Once it is done, all the tests from 
https://wpt.fyi/results/svg/types/scripted/SVGAnimatedEnumeration-SVGMarkerElement.html

will pass.

[Ahmad Saleem]

(In reply to Karl Dubost from comment #3)
> The goal is to add
>   const unsigned short SVG_MARKER_ORIENT_AUTO_START_REVERSE = 3;
> to the idl file
> https://searchfox.org/wubkat/source/Source/WebCore/svg/SVGMarkerElement.idl
> 
> The equivalent on Gecko 
> https://searchfox.org/mozilla-central/source/dom/webidl/SVGMarkerElement.
> webidl
> 
> But to make sure to not break anything too. So probably a couple of
> modifications in the process. 
> 
> Once it is done, all the tests from 
> https://wpt.fyi/results/svg/types/scripted/SVGAnimatedEnumeration-
> SVGMarkerElement.html
> 
> will pass.

Tried this:

> Source/WebCore/svg/SVGMarkerElement.idl:

const unsigned short SVG_MARKER_ORIENT_AUTO_START_REVERSE = 3;

> Source/WebCore/svg/SVGMarkerTypes.h (in enum - SVGMarkerOrientType):

Change:

 SVGMarkerOrientAutoStartReverse = SVGMarkerOrientUnknown

to:

    SVGMarkerOrientAutoStartReverse

> Source/WebCore/svg/SVGMarkerElement.h (in enum):

 SVG_MARKER_ORIENT_AUTO_START_REVERSE = SVGMarkerOrientAutoStartReverse

and (this might not be required):

void setOrientToAutoReverseAngle(const SVGAngle&);

> Source/WebCore/svg/SVGMarkerElement.cpp:

void SVGMarkerElement::setOrientToAutoReverseAngle(const SVGAngle& autoreverseangle)
{
    Ref { m_orientAngle } -> baseVal()->newValueSpecifiedUnits(autoreverseangle.unitType(), autoreverseangle.valueInSpecifiedUnits());
    invalidateMarkerResource();
}

(Similar to setOrientToAuto) - but need fixing.

___

This compiles but don't progress anything and get 'Type Error'.

Just initial start.

[Karl Dubost]

Ahmad,
This probably needs to be changed too. 

https://searchfox.org/wubkat/rev/c40451f6052e2805fb1c6abfb61fa322c67caf5b/Source/WebCore/svg/SVGMarkerTypes.h#40-48

[Radar WebKit Bug Importer]

<rdar://problem/123453058>