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dwrite: Update line breaking logic with Unicode 11.0.0 changes. 

Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Nikolay Sivov 2018-11-06 18:01:37 +03:00 committed by Alexandre Julliard
parent c296a21cdb
commit 41cba1dcd5
1 changed files with 3 additions and 4 deletions
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7
dlls/dwrite/analyzer.c
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@ -517,7 +517,7 @@ static HRESULT analyze_linebreaks(const WCHAR *text, UINT32 count, DWRITE_LINE_B
{
switch (break_class[i])
{
/* LB7 - do not break before spaces */
/* LB7 - do not break before spaces or zero-width space */
case b_SP:
set_break_condition(i, BreakConditionBefore, DWRITE_BREAK_CONDITION_MAY_NOT_BREAK, &state);
break;
@ -531,10 +531,9 @@ static HRESULT analyze_linebreaks(const WCHAR *text, UINT32 count, DWRITE_LINE_B
if (j < count-1 && break_class[j+1] != b_ZW)
set_break_condition(j, BreakConditionAfter, DWRITE_BREAK_CONDITION_CAN_BREAK, &state);
break;
/* LB8a - do not break between ZWJ and an ideograph, emoji base or emoji modifier */
/* LB8a - do not break after ZWJ */
case b_ZWJ:
if (i < count-1 && (break_class[i+1] == b_ID || break_class[i+1] == b_EB || break_class[i+1] == b_EM))
set_break_condition(i, BreakConditionAfter, DWRITE_BREAK_CONDITION_MAY_NOT_BREAK, &state);
set_break_condition(i, BreakConditionAfter, DWRITE_BREAK_CONDITION_MAY_NOT_BREAK, &state);
break;
}
}