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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/179567">179567</a></dd>
<dt>Author</dt> <dd>enrica@apple.com</dd>
<dt>Date</dt> <dd>2015-02-03 13:37:56 -0800 (Tue, 03 Feb 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>Additional emoji support.
https://bugs.webkit.org/show_bug.cgi?id=141047
rdar://problem/19045135
Reviewed by Darin Adler.
Source/WebCore:
Adds support for emoji modifiers and group emoji.
Test: editing/deleting/delete-emoji.html
* platform/graphics/FontCascade.cpp:
(WebCore::FontCascade::characterRangeCodePath):
* platform/text/TextBreakIterator.cpp:
(WebCore::cursorMovementIterator):
* rendering/RenderText.cpp:
(WebCore::isEmojiGroupCandidate):
(WebCore::isEmojiModifier):
(WebCore::RenderText::previousOffsetForBackwardDeletion):
LayoutTests:
* editing/deleting/delete-emoji.html: Added.
* editing/deleting/delete-emoji-expected.txt: Added.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreplatformgraphicsFontCascadecpp">trunk/Source/WebCore/platform/graphics/FontCascade.cpp</a></li>
<li><a href="#trunkSourceWebCoreplatformtextTextBreakIteratorcpp">trunk/Source/WebCore/platform/text/TextBreakIterator.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderTextcpp">trunk/Source/WebCore/rendering/RenderText.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestseditingdeletingdeleteemojiexpectedtxt">trunk/LayoutTests/editing/deleting/delete-emoji-expected.txt</a></li>
<li><a href="#trunkLayoutTestseditingdeletingdeleteemojihtml">trunk/LayoutTests/editing/deleting/delete-emoji.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (179566 => 179567)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2015-02-03 21:29:02 UTC (rev 179566)
+++ trunk/LayoutTests/ChangeLog 2015-02-03 21:37:56 UTC (rev 179567)
</span><span class="lines">@@ -1,3 +1,14 @@
</span><ins>+2015-02-02 Enrica Casucci <enrica@apple.com>
+
+ Additional emoji support.
+ https://bugs.webkit.org/show_bug.cgi?id=141047
+ rdar://problem/19045135
+
+ Reviewed by Darin Adler.
+
+ * editing/deleting/delete-emoji.html: Added.
+ * editing/deleting/delete-emoji-expected.txt: Added.
+
</ins><span class="cx"> 2015-02-03 Brent Fulgham <bfulgham@apple.com>
</span><span class="cx">
</span><span class="cx"> [Win] Lint cleanup of Windows TestExpectations (Unreviewed)
</span></span></pre></div>
<a id="trunkLayoutTestseditingdeletingdeleteemojiexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/editing/deleting/delete-emoji-expected.txt (0 => 179567)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/editing/deleting/delete-emoji-expected.txt (rev 0)
+++ trunk/LayoutTests/editing/deleting/delete-emoji-expected.txt 2015-02-03 21:37:56 UTC (rev 179567)
</span><span class="lines">@@ -0,0 +1,17 @@
</span><ins>+This test verifies that emoji groups and emoji with variations are deleted correctly
+
+Dump of markup 1:
+| "π¦π»π¦πΎπ»π¦πΎπ¦π©βπ©βπ¦<#selection-caret>
+"
+
+Dump of markup 2:
+| "π¦π»π¦πΎπ»π¦πΎπ¦<#selection-caret>"
+
+Dump of markup 3:
+| "π¦π»π¦πΎπ»π¦πΎ<#selection-caret>"
+
+Dump of markup 4:
+| "π¦π»π¦πΎπ»<#selection-caret>"
+
+Dump of markup 5:
+| "π¦π»π¦πΎ<#selection-caret>"
</ins></span></pre></div>
<a id="trunkLayoutTestseditingdeletingdeleteemojihtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/editing/deleting/delete-emoji.html (0 => 179567)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/editing/deleting/delete-emoji.html (rev 0)
+++ trunk/LayoutTests/editing/deleting/delete-emoji.html 2015-02-03 21:37:56 UTC (rev 179567)
</span><span class="lines">@@ -0,0 +1,24 @@
</span><ins>+<!DOCTYPE html>
+<html>
+<body>
+<div id="test" contenteditable="true">&#x1F466;&#x1F3FB;&#x1F466;&#x1F3FE;&#x1F3FB;&#x1F466;&#x1F3FE;&#x1F466;&#x1F469;&#x200D;&#x1F469;&#x200D;&#x1F466;
+</div>
+<script src="../../resources/dump-as-markup.js"></script>
+<script>
+Markup.description("This test verifies that emoji groups and emoji with variations are deleted correctly");
+
+var selection = window.getSelection();
+var testElement = document.getElementById('test');
+selection.setBaseAndExtent(testElement.firstChild, 20, testElement.firstChild, 20);
+Markup.dump("test");
+document.execCommand("Delete");
+Markup.dump("test");
+document.execCommand("Delete");
+Markup.dump("test");
+document.execCommand("Delete");
+Markup.dump("test");
+document.execCommand("Delete");
+Markup.dump("test");
+</script>
+</body>
+</html>
</ins></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (179566 => 179567)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2015-02-03 21:29:02 UTC (rev 179566)
+++ trunk/Source/WebCore/ChangeLog 2015-02-03 21:37:56 UTC (rev 179567)
</span><span class="lines">@@ -1,3 +1,24 @@
</span><ins>+2015-02-02 Enrica Casucci <enrica@apple.com>
+
+ Additional emoji support.
+ https://bugs.webkit.org/show_bug.cgi?id=141047
+ rdar://problem/19045135
+
+ Reviewed by Darin Adler.
+
+ Adds support for emoji modifiers and group emoji.
+
+ Test: editing/deleting/delete-emoji.html
+
+ * platform/graphics/FontCascade.cpp:
+ (WebCore::FontCascade::characterRangeCodePath):
+ * platform/text/TextBreakIterator.cpp:
+ (WebCore::cursorMovementIterator):
+ * rendering/RenderText.cpp:
+ (WebCore::isEmojiGroupCandidate):
+ (WebCore::isEmojiModifier):
+ (WebCore::RenderText::previousOffsetForBackwardDeletion):
+
</ins><span class="cx"> 2015-02-03 Jer Noble <jer.noble@apple.com>
</span><span class="cx">
</span><span class="cx"> Passing invalid values to OfflineAudioContext's constructor should not crash.
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformgraphicsFontCascadecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/graphics/FontCascade.cpp (179566 => 179567)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/graphics/FontCascade.cpp 2015-02-03 21:29:02 UTC (rev 179566)
+++ trunk/Source/WebCore/platform/graphics/FontCascade.cpp 2015-02-03 21:37:56 UTC (rev 179567)
</span><span class="lines">@@ -640,8 +640,13 @@
</span><span class="cx"> // Alternatively, we may as well consider binary search over a sorted
</span><span class="cx"> // list of ranges.
</span><span class="cx"> CodePath result = Simple;
</span><ins>+ bool previousCharacterIsEmojiGroupCandidate = false;
</ins><span class="cx"> for (unsigned i = 0; i < len; i++) {
</span><span class="cx"> const UChar c = characters[i];
</span><ins>+ if (c == zeroWidthJoiner && previousCharacterIsEmojiGroupCandidate)
+ return Complex;
+
+ previousCharacterIsEmojiGroupCandidate = false;
</ins><span class="cx"> if (c < 0x2E5) // U+02E5 through U+02E9 (Modifier Letters : Tone letters)
</span><span class="cx"> continue;
</span><span class="cx"> if (c <= 0x2E9)
</span><span class="lines">@@ -762,6 +767,10 @@
</span><span class="cx"> if (supplementaryCharacter <= 0x1F1FF)
</span><span class="cx"> return Complex;
</span><span class="cx">
</span><ins>+ if (supplementaryCharacter >= 0x1F466 && supplementaryCharacter <= 0x1F469) {
+ previousCharacterIsEmojiGroupCandidate = true;
+ continue;
+ }
</ins><span class="cx"> if (supplementaryCharacter < 0xE0100) // U+E0100 through U+E01EF Unicode variation selectors.
</span><span class="cx"> continue;
</span><span class="cx"> if (supplementaryCharacter <= 0xE01EF)
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformtextTextBreakIteratorcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/text/TextBreakIterator.cpp (179566 => 179567)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/text/TextBreakIterator.cpp 2015-02-03 21:29:02 UTC (rev 179566)
+++ trunk/Source/WebCore/platform/text/TextBreakIterator.cpp 2015-02-03 21:37:56 UTC (rev 179567)
</span><span class="lines">@@ -207,6 +207,10 @@
</span><span class="cx"> "$MalV = \\u0D4D;" // Malayalam Sign Virama
</span><span class="cx"> "$Mal1 = [\\u0D15-\\u0D39];" // Malayalam Letter A,...,Ha
</span><span class="cx"> "$RI = [\\U0001F1E6-\\U0001F1FF];" // Emoji regional indicators
</span><ins>+ "$ZWJ = \\u200D;" // Zero width joiner
+ "$EmojiForModsAndSeqs = [\\U0001F466-\\U0001F469];" // Emoji that take Fitzpatrick modifiers AND participate in ZWJ sequences
+ "$EmojiForModsOnly = [\\u261D \\u270A-\\u270C \\U0001F385 \\U0001F3C3-\\U0001F3C4 \\U0001F3C7 \\U0001F3CA \\U0001F442-\\U0001F443 \\U0001F446-\\U0001F450 \\U0001F46E-\\U0001F478 \\U0001F47C \\U0001F481-\\U0001F483 \\U0001F485-\\U0001F487 \\U0001F4AA \\U0001F645-\\U0001F647 \\U0001F64B-\\U0001F64F \\U0001F6B4-\\U0001F6B6 \\U0001F6C0];" // Emoji that take Fitzpatrick modifiers
+ "$EmojiMods = [\\U0001F3FB-\\U0001F3FF];" // Fitzpatrick modifiers
</ins><span class="cx"> "!!chain;"
</span><span class="cx"> "!!forward;"
</span><span class="cx"> "$CR $LF;"
</span><span class="lines">@@ -225,6 +229,8 @@
</span><span class="cx"> "$Tel0 $TelV $Tel1;" // Telugu Virama (forward)
</span><span class="cx"> "$Kan0 $KanV $Kan1;" // Kannada Virama (forward)
</span><span class="cx"> "$Mal0 $MalV $Mal1;" // Malayalam Virama (forward)
</span><ins>+ "$ZWJ $EmojiForModsAndSeqs;" // Don't break in emoji ZWJ sequences
+ "[$EmojiForModsAndSeqs $EmojiForModsOnly] $EmojiMods;" // Don't break between relevant emoji and Fitzpatrick modifier
</ins><span class="cx"> "!!reverse;"
</span><span class="cx"> "$LF $CR;"
</span><span class="cx"> "($L | $V | $LV | $LVT) $L;"
</span><span class="lines">@@ -242,6 +248,8 @@
</span><span class="cx"> "$Tel1 $TelV $Tel0;" // Telugu Virama (backward)
</span><span class="cx"> "$Kan1 $KanV $Kan0;" // Kannada Virama (backward)
</span><span class="cx"> "$Mal1 $MalV $Mal0;" // Malayalam Virama (backward)
</span><ins>+ "$EmojiForModsAndSeqs $ZWJ;" // Don't break in emoji ZWJ sequences
+ "$EmojiMods [$EmojiForModsAndSeqs $EmojiForModsOnly];" // Don't break between relevant emoji and Fitzpatrick modifier
</ins><span class="cx"> "!!safe_reverse;"
</span><span class="cx"> "!!safe_forward;";
</span><span class="cx"> static TextBreakIterator* staticCursorMovementIterator = initializeIteratorWithRules(kRules);
</span><span class="lines">@@ -397,6 +405,10 @@
</span><span class="cx"> "$WJ = [:LineBreak = Word_Joiner:];"
</span><span class="cx"> "$XX = [:LineBreak = Unknown:];"
</span><span class="cx"> "$ZW = [:LineBreak = ZWSpace:];"
</span><ins>+ "$ZWJ = \\u200D;"
+ "$EmojiForModsAndSeqs = [\\U0001F466-\\U0001F469];"
+ "$EmojiForModsOnly = [\\u261D \\u270A-\\u270C \\U0001F385 \\U0001F3C3-\\U0001F3C4 \\U0001F3C7 \\U0001F3CA \\U0001F442-\\U0001F443 \\U0001F446-\\U0001F450 \\U0001F46E-\\U0001F478 \\U0001F47C \\U0001F481-\\U0001F483 \\U0001F485-\\U0001F487 \\U0001F4AA \\U0001F645-\\U0001F647 \\U0001F64B-\\U0001F64F \\U0001F6B4-\\U0001F6B6 \\U0001F6C0];"
+ "$EmojiMods = [\\U0001F3FB-\\U0001F3FF];"
</ins><span class="cx"> "$dictionary = [:LineBreak = Complex_Context:];"
</span><span class="cx"> "$ALPlus = [$AL $AI $SA $SG $XX];"
</span><span class="cx"> "$ALcm = $ALPlus $CM*;"
</span><span class="lines">@@ -473,6 +485,7 @@
</span><span class="cx"> "$LB4NonBreaks [$SP $ZW];"
</span><span class="cx"> "$CAN_CM $CM* [$SP $ZW];"
</span><span class="cx"> "$CM+ [$SP $ZW];"
</span><ins>+ "[$EmojiForModsAndSeqs $EmojiMods] $ZWJ $EmojiForModsAndSeqs;"
</ins><span class="cx"> "$CAN_CM $CM+;"
</span><span class="cx"> "$CM+;"
</span><span class="cx"> "$CAN_CM $CM* $WJcm;"
</span><span class="lines">@@ -539,7 +552,8 @@
</span><span class="cx"> "$IScm ($ALcm | $HLcm);"
</span><span class="cx"> "($ALcm | $HLcm | $NUcm) $OPcm;"
</span><span class="cx"> "$CM+ $OPcm;"
</span><del>- "$CPcm ($ALcm | $HLcm | $NUcm);";
</del><ins>+ "$CPcm ($ALcm | $HLcm | $NUcm);"
+ "[$EmojiForModsAndSeqs $EmojiForModsOnly] $EmojiMods;";
</ins><span class="cx">
</span><span class="cx"> static const char* uax14Reverse =
</span><span class="cx"> "!!reverse;"
</span><span class="lines">@@ -577,6 +591,7 @@
</span><span class="cx"> "$LF $CR;"
</span><span class="cx"> "[$SP $ZW] [$LB4NonBreaks-$CM];"
</span><span class="cx"> "[$SP $ZW] $CM+ $CAN_CM;"
</span><ins>+ "$EmojiForModsAndSeqs $ZWJ [$EmojiForModsAndSeqs $EmojiMods];"
</ins><span class="cx"> "$CM+ $CAN_CM;"
</span><span class="cx"> "$CM* $WJ $CM* $CAN_CM;"
</span><span class="cx"> "$CM* $WJ [$LB8NonBreaks-$CM];"
</span><span class="lines">@@ -633,7 +648,8 @@
</span><span class="cx"> "$CM* ($ALPlus | $HL) $CM* ($ALPlus | $HL);"
</span><span class="cx"> "$CM* ($ALPlus | $HL) $CM* $IS;"
</span><span class="cx"> "$CM* $OP $CM* ($ALPlus | $HL | $NU);"
</span><del>- "$CM* ($ALPlus | $HL | $NU) $CM* $CP;";
</del><ins>+ "$CM* ($ALPlus | $HL | $NU) $CM* $CP;"
+ "$EmojiMods [$EmojiForModsAndSeqs $EmojiForModsOnly];";
</ins><span class="cx">
</span><span class="cx"> static const char* uax14SafeForward =
</span><span class="cx"> "!!safe_forward;"
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderTextcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderText.cpp (179566 => 179567)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderText.cpp 2015-02-03 21:29:02 UTC (rev 179566)
+++ trunk/Source/WebCore/rendering/RenderText.cpp 2015-02-03 21:37:56 UTC (rev 179567)
</span><span class="lines">@@ -1421,23 +1421,33 @@
</span><span class="cx"> HangulStateBreak
</span><span class="cx"> };
</span><span class="cx">
</span><del>-inline bool isHangulLVT(UChar32 character)
</del><ins>+static inline bool isHangulLVT(UChar32 character)
</ins><span class="cx"> {
</span><span class="cx"> return (character - HANGUL_SYLLABLE_START) % HANGUL_JONGSEONG_COUNT;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-inline bool isMark(UChar32 c)
</del><ins>+static inline bool isMark(UChar32 character)
</ins><span class="cx"> {
</span><del>- int8_t charType = u_charType(c);
</del><ins>+ int8_t charType = u_charType(character);
</ins><span class="cx"> return charType == U_NON_SPACING_MARK || charType == U_ENCLOSING_MARK || charType == U_COMBINING_SPACING_MARK;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-inline bool isRegionalIndicator(UChar32 c)
</del><ins>+static inline bool isRegionalIndicator(UChar32 character)
</ins><span class="cx"> {
</span><span class="cx"> // National flag emoji each consists of a pair of regional indicator symbols.
</span><del>- return 0x1F1E6 <= c && c <= 0x1F1FF;
</del><ins>+ return 0x1F1E6 <= character && character <= 0x1F1FF;
</ins><span class="cx"> }
</span><span class="cx">
</span><ins>+static inline bool isEmojiGroupCandidate(UChar32 character)
+{
+ return character >= 0x1F466 && character <= 0x1F469;
+}
+
+static inline bool isEmojiModifier(UChar32 character)
+{
+ return character >= 0x1F3FB && character <= 0x1F3FF;
+}
+
</ins><span class="cx"> #endif
</span><span class="cx">
</span><span class="cx"> int RenderText::previousOffsetForBackwardDeletion(int current) const
</span><span class="lines">@@ -1447,6 +1457,9 @@
</span><span class="cx"> StringImpl& text = *m_text.impl();
</span><span class="cx"> UChar32 character;
</span><span class="cx"> bool sawRegionalIndicator = false;
</span><ins>+ bool sawEmojiGroupCandidate = false;
+ bool sawEmojiModifier = false;
+
</ins><span class="cx"> while (current > 0) {
</span><span class="cx"> if (U16_IS_TRAIL(text[--current]))
</span><span class="cx"> --current;
</span><span class="lines">@@ -1455,6 +1468,22 @@
</span><span class="cx">
</span><span class="cx"> UChar32 character = text.characterStartingAt(current);
</span><span class="cx">
</span><ins>+ if (sawEmojiGroupCandidate) {
+ sawEmojiGroupCandidate = false;
+ if (character == zeroWidthJoiner)
+ continue;
+ // We could have two emoji group candidates without a joiner in between.
+ // Those should not be treated as a group.
+ U16_FWD_1_UNSAFE(text, current);
+ break;
+ }
+
+ if (sawEmojiModifier) {
+ if (isEmojiModifier(character))
+ U16_FWD_1_UNSAFE(text, current);
+ break;
+ }
+
</ins><span class="cx"> if (sawRegionalIndicator) {
</span><span class="cx"> // We don't check if the pair of regional indicator symbols before current position can actually be combined
</span><span class="cx"> // into a flag, and just delete it. This may not agree with how the pair is rendered in edge cases,
</span><span class="lines">@@ -1473,7 +1502,17 @@
</span><span class="cx"> sawRegionalIndicator = true;
</span><span class="cx"> continue;
</span><span class="cx"> }
</span><ins>+
+ if (isEmojiModifier(character)) {
+ sawEmojiModifier = true;
+ continue;
+ }
</ins><span class="cx">
</span><ins>+ if (isEmojiGroupCandidate(character)) {
+ sawEmojiGroupCandidate = true;
+ continue;
+ }
+
</ins><span class="cx"> if (!isMark(character) && (character != 0xFF9E) && (character != 0xFF9F))
</span><span class="cx"> break;
</span><span class="cx"> }
</span></span></pre>
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