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体验新版 GitCode,发现更多精彩内容 >>
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d2a46a5e
编写于
3月 31, 2016
作者:
B
Belleve Invis
浏览文件
操作
浏览文件
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电子邮件补丁
差异文件
Add CJK breaking mechanism
上级
b92c86cc
变更
1
显示空白变更内容
内联
并排
Showing
1 changed file
with
36 addition
and
3 deletion
+36
-3
src/vs/editor/common/viewModel/characterHardWrappingLineMapper.ts
...ditor/common/viewModel/characterHardWrappingLineMapper.ts
+36
-3
未找到文件。
src/vs/editor/common/viewModel/characterHardWrappingLineMapper.ts
浏览文件 @
d2a46a5e
...
...
@@ -17,6 +17,7 @@ var throwawayIndexOfResult = {
var
BREAK_BEFORE_CLASS
=
1
;
var
BREAK_AFTER_CLASS
=
2
;
var
BREAK_OBTRUSIVE_CLASS
=
3
;
var
BREAK_IDEOGRAPHIC
=
4
;
// for Han and Kana.
function
buildCharacterClassesMap
(
BREAK_BEFORE
:
string
,
BREAK_AFTER
:
string
,
BREAK_OBTRUSIVE
:
string
):
number
[]
{
var
result
:
number
[]
=
[],
...
...
@@ -32,6 +33,14 @@ function buildCharacterClassesMap(BREAK_BEFORE:string, BREAK_AFTER:string, BREAK
result
[
i
]
=
0
;
}
// Initialize BREAK_IDEOGRAPHIC for these Unicode ranges:
// 1. CJK Unified Ideographs (0x4E00 -- 0x9FFF)
// 2. CJK Unified Ideographs Extension A (0x3400 -- 0x4DBF)
// 3. Hiragana and Katakana (0x3040 -- 0x30FF)
for
(
i
=
0x3040
;
i
<=
0x30FF
;
i
++
)
result
[
i
]
=
BREAK_IDEOGRAPHIC
;
for
(
i
=
0x3400
;
i
<=
0x4DBF
;
i
++
)
result
[
i
]
=
BREAK_IDEOGRAPHIC
;
for
(
i
=
0x4E00
;
i
<=
0x9FFF
;
i
++
)
result
[
i
]
=
BREAK_IDEOGRAPHIC
;
for
(
i
=
0
;
i
<
BREAK_BEFORE
.
length
;
i
++
)
{
result
[
BREAK_BEFORE
.
charCodeAt
(
i
)]
=
BREAK_BEFORE_CLASS
;
}
...
...
@@ -102,7 +111,11 @@ export class CharacterHardWrappingLineMapperFactory implements ILineMapperFactor
charCodeIsTab
:
boolean
,
charCodeClass
:
number
,
breakBeforeOffset
:
number
,
// 0-based offset in the lineText before which breaking
restoreVisibleColumnFrom
:
number
;
// visible column used to re-establish a correct `visibleColumn`
restoreVisibleColumnFrom
:
number
,
// visible column used to re-establish a correct `visibleColumn`
prevCode
:
number
,
// CJK kinsoku shori: character and class before current one
prevClass
:
number
,
nextCode
:
number
,
// CJK kinsoku shori: character and class after current one
nextClass
:
number
;
var
niceBreakOffset
=
-
1
,
// Last index of a character that indicates a break should happen before it (more desirable)
niceBreakVisibleColumn
=
0
,
// visible column if a break were to be later introduced before `niceBreakOffset`
...
...
@@ -126,6 +139,16 @@ export class CharacterHardWrappingLineMapperFactory implements ILineMapperFactor
niceBreakVisibleColumn
=
0
;
}
// CJK breaking : before break
if
(
charCodeClass
===
BREAK_IDEOGRAPHIC
&&
i
>
0
)
{
var
prevCode
:
number
=
lineText
.
charCodeAt
(
i
-
1
);
var
prevClass
:
number
=
nextCode
<
characterClasses
.
length
?
characterClasses
[
nextCode
]
:
0
;
if
(
prevClass
!==
BREAK_BEFORE_CLASS
)
{
// Kinsoku Shori: Don't break before a trailing character
niceBreakOffset
=
i
;
niceBreakVisibleColumn
=
0
;
}
}
var
charColumnSize
=
1
;
if
(
strings
.
isFullWidthCharacter
(
charCode
))
{
charColumnSize
=
columnsForFullWidthChar
;
...
...
@@ -191,6 +214,16 @@ export class CharacterHardWrappingLineMapperFactory implements ILineMapperFactor
niceBreakVisibleColumn
=
0
;
}
// CJK breaking : after break
if
(
charCodeClass
===
BREAK_IDEOGRAPHIC
&&
i
<
len
-
1
)
{
var
nextCode
:
number
=
lineText
.
charCodeAt
(
i
+
1
);
var
nextClass
:
number
=
nextCode
<
characterClasses
.
length
?
characterClasses
[
nextCode
]
:
0
;
if
(
nextClass
!==
BREAK_AFTER_CLASS
)
{
// Kinsoku Shori: Don't break before a trailing character
niceBreakOffset
=
i
+
1
;
niceBreakVisibleColumn
=
0
;
}
}
if
(
charCodeClass
===
BREAK_OBTRUSIVE_CLASS
)
{
// This is an obtrusive character that indicates that a break should happen after it
obtrusiveBreakOffset
=
i
+
1
;
...
...
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