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Merge pull request #484 from duanyao/workaround_spaces_webkit

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Workaround spaces issues of blink/webkit
This commit is contained in:
Lu Wang 2015-03-16 22:19:52 +08:00
commit 88e5fade10
3 changed files with 15 additions and 13 deletions
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12
share/base.css.in
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@ -161,13 +161,19 @@
/* Workaround for https://bugs.webkit.org/show_bug.cgi?id=35443 */
content: '';
}
.@CSS_LINE_CN@ span { /* text blocks within a line */
position:relative;
/* _<id> for spaces may need display:inline, which will override this */
.@CSS_LINE_CN@:before {
/* Workaround Blink(up to 41)/Webkit bug of word-spacing with leading spaces (chromium #404444 and pdf2htmlEX #412) */
content: '';
display: inline-block;
}
.@CSS_LINE_CN@ span { /* text blocks within a line */
/* Blink(up to 41)/Webkit have bug with negative word-spacing and inline-block (pdf2htmlEX #416), so keep normal span inline. */
position:relative;
unicode-bidi:bidi-override; /* For rtl languages, e.g. Hebrew, we don't want the default Unicode behaviour */
}
.@CSS_WHITESPACE_CN@ { /* text shift */
/* Blink(up to 41)/Webkit have bug with inline element, continuous spaces and word-spacing. Workaround by inline-block. */
display: inline-block;
color: transparent;
z-index: -1;
}

6
src/HTMLTextLine.cc
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@ -247,11 +247,7 @@ void HTMLTextLine::dump_text(ostream & out)
if(!(state_iter1->hash_umask & State::umask_by_id(State::WORD_SPACE_ID)))
{
double space_off = state_iter1->single_space_offset();
if((std::abs(target - space_off) <= param.h_eps)
// Chrome/webkit don't apply CSS word-spacing to leading spaces, so we don't
// convert leading offsets to spaces. See also issue #412 and chromium issue #404444.
// TODO after browsers having this bug have vanished, just remove the line below.
&& ((state_iter1->word_space == 0) || (cur_offset_iter->start_idx != 0)))
if(std::abs(target - space_off) <= param.h_eps)
{
Unicode u = ' ';
writeUnicodes(out, &u, 1);

8
src/StateManager.h
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@ -245,15 +245,15 @@ public:
static const char * get_css_class_name (void) { return CSS::WHITESPACE_CN; }
double default_value(void) { return 0; }
void dump_value(std::ostream & out, double value) {
out << ((value > 0) ? "display:inline-block;width:"
: "display:inline;margin-left:")
out << ((value > 0) ? "width:"
: "margin-left:")
<< round(value) << "px;";
}
void dump_print_value(std::ostream & out, double value, double scale)
{
value *= scale;
out << ((value > 0) ? "display:inline-block;width:"
: "display:inline;margin-left:")
out << ((value > 0) ? "width:"
: "margin-left:")
<< round(value) << "pt;";
}
};