Index: third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc |
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc b/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc |
index c9b65792a51ee43716898deb1b9603697c680471..b55cd1859332f5a9c872350cdba06cbaa2e8bef8 100644 |
--- a/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc |
+++ b/third_party/WebKit/Source/core/layout/ng/ng_writing_mode.cc |
@@ -4,6 +4,7 @@ |
#include "core/layout/ng/ng_writing_mode.h" |
+#include "core/layout/LayoutObject.h" |
#include "wtf/Assertions.h" |
namespace blink { |
@@ -22,4 +23,17 @@ NGWritingMode FromPlatformWritingMode(WritingMode mode) { |
} |
} |
+bool IsParallelWritingMode(NGWritingMode a, NGWritingMode b) { |
+ return (a == kHorizontalTopBottom) == (b == kHorizontalTopBottom); |
+} |
+ |
+bool IsParallelWritingMode(const LayoutObject* layoutObject, |
+ const ComputedStyle& style) { |
+ if (!layoutObject) |
+ return true; |
+ return IsParallelWritingMode( |
+ FromPlatformWritingMode(layoutObject->styleRef().getWritingMode()), |
+ FromPlatformWritingMode(style.getWritingMode())); |
+} |
+ |
} // namespace blink |