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Commit f551cd31 authored by Koji Ishii's avatar Koji Ishii Committed by Commit Bot
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Fix more CJK characters not to skip ink for text decorations 

The CL[1] disabled skipping inks for characters of
IsCJKIdeographOrSymbol(). This does not cover all characters in CJK.

This patch adds other CJK characters from Unicode blocks, in the
same way as WebKit does.

[1] https://codereview.chromium.org/2598393002

Bug: 793762
Change-Id: I20e10588adc988399c900b336d0c22ad984bb011
Reviewed-on: https://chromium-review.googlesource.com/820210
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: default avatarDominik Röttsches <drott@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523241}
parent bdf4ac0e
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Inline Side-by-side
Showing with 35 additions and 1 deletion
third_party/WebKit/LayoutTests/fast/css3-text/css3-text-decoration/text-decoration-skip-ink-ideograph-expected.html
View file @ f551cd31
<!DOCTYPE html>
<meta charset="utf-8">
<style>
p {
text-decoration: underline;
......@@ -16,3 +17,6 @@ p {
<p>aaa &#x696D;
<p>&#x696D; aaa &#x696D;
<p>&#x696D; aaa &#x696D; aaa &#x696D;
<p>바른정당 서울 지지율
<p>ㄱㄲㄳㄴㄵ
<p>ㄅㄆㄇㄈㄉ
third_party/WebKit/LayoutTests/fast/css3-text/css3-text-decoration/text-decoration-skip-ink-ideograph.html
View file @ f551cd31
<!DOCTYPE html>
<meta charset="utf-8">
<style>
p {
text-decoration: underline;
......@@ -15,3 +16,6 @@ p {
<p>aaa &#x696D;
<p>&#x696D; aaa &#x696D;
<p>&#x696D; aaa &#x696D; aaa &#x696D;
<p>바른정당 서울 지지율
<p>ㄱㄲㄳㄴㄵ
<p>ㄅㄆㄇㄈㄉ
third_party/WebKit/Source/platform/fonts/shaping/ShapeResultBloberizer.cpp
View file @ f551cd31
......@@ -171,7 +171,8 @@ inline bool IsSkipInkException(const ShapeResultBloberizer& bloberizer,
// CJK characters.
return bloberizer.GetType() == ShapeResultBloberizer::Type::kTextIntercepts &&
!text.Is8Bit() &&
Character::IsCJKIdeographOrSymbol(text.CodepointAt(character_index));
!Character::CanTextDecorationSkipInk(
text.CodepointAt(character_index));
}
template <typename TextContainerType>
......
third_party/WebKit/Source/platform/text/Character.cpp
View file @ f551cd31
......@@ -211,6 +211,30 @@ unsigned Character::ExpansionOpportunityCount(const UChar* characters,
return count;
}
bool Character::CanTextDecorationSkipInk(UChar32 codepoint) {
if (Character::IsCJKIdeographOrSymbol(codepoint))
return false;
UBlockCode block = ublock_getCode(codepoint);
switch (block) {
// These blocks contain CJK characters we don't want to skip ink, but are
// not ideograph that IsCJKIdeographOrSymbol() does not cover.
case UBLOCK_BOPOMOFO:
case UBLOCK_BOPOMOFO_EXTENDED:
case UBLOCK_HANGUL_JAMO:
case UBLOCK_HANGUL_COMPATIBILITY_JAMO:
case UBLOCK_HANGUL_SYLLABLES:
case UBLOCK_HANGUL_JAMO_EXTENDED_A:
case UBLOCK_HANGUL_JAMO_EXTENDED_B:
case UBLOCK_LINEAR_B_IDEOGRAMS:
case UBLOCK_TANGUT:
case UBLOCK_TANGUT_COMPONENTS:
return false;
default:
return true;
}
}
bool Character::CanReceiveTextEmphasis(UChar32 c) {
WTF::Unicode::CharCategory category = WTF::Unicode::Category(c);
if (category &
......
third_party/WebKit/Source/platform/text/Character.h
View file @ f551cd31
......@@ -122,6 +122,7 @@ class PLATFORM_EXPORT Character {
c == kZeroWidthNoBreakSpaceCharacter ||
c == kObjectReplacementCharacter;
}
static bool CanTextDecorationSkipInk(UChar32);
static bool CanReceiveTextEmphasis(UChar32);
static bool IsGraphemeExtended(UChar32 c) {
......
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