Bug 20068 – adding animation property support to RenderStyle

• Component: CSS
• Status: RESOLVED FIXED

[Dean Jackson]

RenderStyle and its Transition class needs to be extended to support the animation properties:
- direction
- iterationCount
- playState
- name

This patch adds these properties, but doesn't actually set them (ie. does not implement the CSS parsing part).

[Dean Jackson]

Created attachment 22327 [details]
adds animation properties into RenderStyle and Transition

[Dave Hyatt]

Comment on attachment 22327 [details]
adds animation properties into RenderStyle and Transition

-    setStyle(style);
+    if (style)
+        setStyle(style);

setAnimatableStyle should never be called with a null style.   This smacks of working around some other problem.  If you have a test case where a null style was set, then we should be debugging how that happened and stop it rather than throwing in an unnecessary null check.

I think "Transition" could ultimately be split up into multiple classes (it seems gross to have all the animation and transition properties together in a single class that is still called "Transition").  I think this could be done later though.

Keyframes are all wrong, but I have promised to look the other way for this initial landing.

EAnimPlayState is only 2 bits so could really be part of the "isSet" bitfield properties if you moved it to after the keyframe list and made it into:

unsigned m_playState : 2;

(unsigned for Windows compiler's benefit)

That would save a bit of memory.

r=me without making these changes, but I'd like to see the null check removed.

[Dave Hyatt]

Comment on attachment 22327 [details]
adds animation properties into RenderStyle and Transition

Oh I also forgot that KeyframeList needs to be updated to the new refcounting model (with a create function).  That's probably enough to tip this over into needing a new patch.

[Simon Fraser (smfr)]

Filed bug 20148 on fixing keyframes to not live in RenderStyle.

[Dave Hyatt]

Comment on attachment 22327 [details]
adds animation properties into RenderStyle and Transition

Ok, r=me assuming cleanup is done.

[Dean Jackson]

Created attachment 22489 [details]
updated patch

Updated patch with review fixes. It won't be committed until a blocking patch lands.

[Dean Jackson]

Created attachment 22579 [details]
Second update to patch

Second update to patch. Hyatt already gave a review+. This is waiting on the blocking bug before it can be landed.

[Dean Jackson]

Committed r35568
	M	WebCore/rendering/style/RenderStyle.cpp
	M	WebCore/rendering/style/RenderStyle.h
	M	WebCore/ChangeLog
	M	WebCore/css/CSSStyleSelector.cpp
	M	WebCore/css/CSSComputedStyleDeclaration.cpp
	M	WebCore/page/AnimationController.cpp