https://bugs.webkit.org/show_bug.cgi?id=123446

Reviewed by Andreas Kling.

By allowing multiple runs per line we can support text flows with consecutive whitespaces in the middle.

* rendering/SimpleLineLayout.cpp:
(WebCore::SimpleLineLayout::canUseFor):
        
    Remove space test.
    The improved test coverage found a few more cases that we need to disallow.

(WebCore::SimpleLineLayout::adjustRunOffsets):
            
    Round the run positions and widths so they match line boxes.
    Adjust for text-align.

(WebCore::SimpleLineLayout::create):
        
    Split lines with consecutive spaces into runs.

* rendering/SimpleLineLayout.h:
(WebCore::SimpleLineLayout::Run::Run):
* rendering/SimpleLineLayoutFunctions.cpp:
(WebCore::SimpleLineLayout::hitTestFlow):
(WebCore::SimpleLineLayout::collectFlowOverflow):
(WebCore::SimpleLineLayout::computeTextBoundingBox):
* rendering/SimpleLineLayoutResolver.h:
(WebCore::SimpleLineLayout::RunResolver::Iterator::resolver):
(WebCore::SimpleLineLayout::RunResolver::Iterator::lineIndex):
(WebCore::SimpleLineLayout::RunResolver::Run::Run):
(WebCore::SimpleLineLayout::RunResolver::Run::rect):
(WebCore::SimpleLineLayout::RunResolver::Run::baseline):
(WebCore::SimpleLineLayout::RunResolver::Run::text):
(WebCore::SimpleLineLayout::RunResolver::Run::lineIndex):
(WebCore::SimpleLineLayout::RunResolver::Iterator::Iterator):
(WebCore::SimpleLineLayout::RunResolver::Iterator::operator++):
        
    Removed unnecessary operators.

(WebCore::SimpleLineLayout::RunResolver::Iterator::operator==):
(WebCore::SimpleLineLayout::RunResolver::Iterator::operator!=):
(WebCore::SimpleLineLayout::RunResolver::Iterator::operator*):
(WebCore::SimpleLineLayout::RunResolver::Iterator::simpleRun):
(WebCore::SimpleLineLayout::RunResolver::RunResolver):
(WebCore::SimpleLineLayout::RunResolver::begin):
(WebCore::SimpleLineLayout::RunResolver::end):
        
    Resolver -> RunResolver

(WebCore::SimpleLineLayout::LineResolver::Iterator::Iterator):
(WebCore::SimpleLineLayout::LineResolver::Iterator::operator++):
(WebCore::SimpleLineLayout::LineResolver::Iterator::operator==):
(WebCore::SimpleLineLayout::LineResolver::Iterator::operator!=):
(WebCore::SimpleLineLayout::LineResolver::Iterator::operator*):
(WebCore::SimpleLineLayout::LineResolver::LineResolver):
(WebCore::SimpleLineLayout::LineResolver::begin):
(WebCore::SimpleLineLayout::LineResolver::end):
        
    Add LineResolver around RunResolver. It resolves the line rectangles.

(WebCore::SimpleLineLayout::runResolver):
(WebCore::SimpleLineLayout::lineResolver):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@158196 268f45cc-cd09-0410-ab3c-d52691b4dbfc