Support ray() shape in offset-path
https://bugs.webkit.org/show_bug.cgi?id=233344
Reviewed by Simon Fraser.
Source/WebCore:
Add support for rendering ray path. Involves getting containing block and offset
of the element from the containing block. Using the size of the containing block
and offset, calculate the length of the ray and create a Line path using the length
and angle. Calculating closest/farthest-side and closest/farthest-corner are simple
but calculating side requires some explanation. First, we get the two possible sides of
the containing block the ray could be intersecting with, based on the angle. To calculate
which side is being intersected, if tan(theta) * top/bottom is outside of the containing
block, this means that the ray is intersecting with the other side. Finally, we calculate
the acute angle based on which side we intersected with. Using the length and angle, we
calculate the length of the hypotenuse, which corresponds with the length of the start point
of the ray to its intersection with a side of the containing block. Test 7 is still failing
due to getting incorrect width of containing block (doesn't happen when animating the path
for some reason). Will implement contain in another patch.
- WebCore.xcodeproj/project.pbxproj:
- rendering/PathOperation.cpp:
(WebCore::toPositiveAngle):
(WebCore::RayPathOperation::getLengthForPath const):
(WebCore::RayPathOperation::pathForReferenceRect const):
- rendering/PathOperation.h:
- rendering/RenderLayer.cpp:
(WebCore::RenderLayer::setReferenceBoxForPathOperations):
(WebCore::RenderLayer::updateTransform):
- rendering/RenderLayer.h:
- rendering/style/RenderStyle.cpp:
(WebCore::getPathFromPathOperation):
LayoutTests:
