https://bugs.webkit.org/show_bug.cgi?id=118757

Patch by Bem Jones-Bey <bjonesbe@adobe.com> on 2013-07-17
Reviewed by Dean Jackson.

Refactor the left and right offset methods to reduce the number of
arguments by splitting the methods into smaller methods. This
refactoring was requested as part of porting support for stacked
floats with shape-outside to Blink.

Also add a variable when calling computeSegmentsForLine to make it
more readable and easier to follow the coordinate system change.

No new tests, no behavior change.

* rendering/RenderBlock.cpp:
(WebCore::RenderBlock::computeLogicalLocationForFloat): Update to use
    the refactored IgnoringShapeOutside methods.
(WebCore::RenderBlock::logicalLeftFloatOffsetForLine): New method to
    compute the offset contributed by left floats.
(WebCore::RenderBlock::adjustLogicalLeftOffsetForLine): New method to
    compute misc adjustments to the left offset.
(WebCore::RenderBlock::logicalRightFloatOffsetForLine): New method to
    compute the offset contributed by right floats.
(WebCore::RenderBlock::adjustLogicalRightOffsetForLine): New method to
    compute misc adjustments to the right offset.
* rendering/RenderBlock.h:
(WebCore::RenderBlock::logicalRightOffsetForLine): Implement original
    method in terms of the float offset computation method and the
    offset adjustment method. This method takes into account the
    shape-outside on any floats when computing the offset.
(WebCore::RenderBlock::logicalLeftOffsetForLine): Ditto.
(WebCore::RenderBlock::logicalRightOffsetForLineIgnoringShapeOutside):
    Compute the right offset as if there was no shape-outside on any
    of the floats.
(WebCore::RenderBlock::logicalLeftOffsetForLineIgnoringShapeOutside):
    Compute the left offset as if there was no shape-outside on any
    of the floats.
* rendering/RenderBlockLineLayout.cpp:
(WebCore::LineWidth::shrinkAvailableWidthForNewFloatIfNeeded): Update
    to use a variable to make the calls to computeSegmentsForLine more
    explicit about the coordinate system conversion.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@152794 268f45cc-cd09-0410-ab3c-d52691b4dbfc