Bug 191934 – Updating href on linearGradient and radialGradient doesn't update its rendering

• Component: SVG
• Status: RESOLVED FIXED

[Ryosuke Niwa]

Updating href content attribute on SVG radialGradient element doesn't update its rendering.

[Ryosuke Niwa]

Created attachment 355543 [details]
Reduction

[Ryosuke Niwa]

linearGradient has the same issue.

[Simon Fraser (smfr)]

A couple of issues here, by the look of it.

First, a radial gradient with r="0" doesn't seem to render a solid color, so even if the attribute changing worked, you'd see nothing.

Second, I think SVGGradientElement::svgAttributeChanged() needs to be like:

 void SVGGradientElement::svgAttributeChanged(const QualifiedName& attrName)
 {
-    if (isKnownAttribute(attrName)) {
+    if (isKnownAttribute(attrName) || SVGURIReference::isKnownAttribute(attrName)) {
         InstanceInvalidationGuard guard(*this);
         if (RenderObject* object = renderer())
             object->setNeedsLayout();

[Simon Fraser (smfr)]

For the zero radius thing, it seems that CGContextDrawRadialGradient() doesn't fill with the end color even though we pass kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation.

[Said Abou-Hallawa]

Created attachment 355897 [details]
Patch

[EWS Watchlist]

Comment on attachment 355897 [details]
Patch

Attachment 355897 [details] did not pass mac-ews (mac):
Output: https://webkit-queues.webkit.org/results/10185500

New failing tests:
svg/dynamic-updates/SVGRadialGradientElement-svgdom-href-prop.svg
svg/dynamic-updates/SVGLinearGradientElement-svgdom-href-prop.svg

[EWS Watchlist]

Created attachment 355902 [details]
Archive of layout-test-results from ews101 for mac-sierra

The attached test failures were seen while running run-webkit-tests on the mac-ews.
Bot: ews101  Port: mac-sierra  Platform: Mac OS X 10.12.6

[EWS Watchlist]

Comment on attachment 355897 [details]
Patch

Attachment 355897 [details] did not pass mac-wk2-ews (mac-wk2):
Output: https://webkit-queues.webkit.org/results/10185729

New failing tests:
svg/dynamic-updates/SVGRadialGradientElement-svgdom-href-prop.svg

[EWS Watchlist]

Created attachment 355906 [details]
Archive of layout-test-results from ews107 for mac-sierra-wk2

The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: ews107  Port: mac-sierra-wk2  Platform: Mac OS X 10.12.6

[EWS Watchlist]

Comment on attachment 355897 [details]
Patch

Attachment 355897 [details] did not pass win-ews (win):
Output: https://webkit-queues.webkit.org/results/10185869

New failing tests:
svg/dynamic-updates/SVGRadialGradientElement-svgdom-href-prop.svg
svg/dynamic-updates/SVGLinearGradientElement-svgdom-href-prop.svg

[EWS Watchlist]

Created attachment 355909 [details]
Archive of layout-test-results from ews204 for win-future

The attached test failures were seen while running run-webkit-tests on the win-ews.
Bot: ews204  Port: win-future  Platform: CYGWIN_NT-6.1-2.10.0-0.325-5-3-x86_64-64bit

[Said Abou-Hallawa]

Created attachment 355910 [details]
Patch

[Said Abou-Hallawa]

(In reply to Said Abou-Hallawa from comment #12)
> Created attachment 355910 [details]
> Patch

I forgot waitUntilDone()/notifyDone() in the tests.

[Ryosuke Niwa]

Comment on attachment 355910 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=355910&action=review

> LayoutTests/ChangeLog:9
> +        * svg/dynamic-updates/SVGLinearGradientElement-svgdom-href-prop-expected.svg: Added.
> +        * svg/dynamic-updates/SVGLinearGradientElement-svgdom-href-prop.svg: Added.

Could you add a test case for a shadow tree as I've done in https://trac.webkit.org/changeset/238524 ?

[Said Abou-Hallawa]

Created attachment 355921 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 355921 [details]
Patch

Clearing flags on attachment: 355921

Committed r238651: <https://trac.webkit.org/changeset/238651>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Radar WebKit Bug Importer]

<rdar://problem/46328013>