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Correctly set script and direction.

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This commit is contained in:
Hermann Kraus 2012-06-30 18:03:31 +02:00
parent 2e50936b13
commit 89b727d2fc
3 changed files with 9 additions and 8 deletions
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7
include/mapnik/text/shaping.hpp
View file

@ -3,9 +3,8 @@
//ICU
#include <unicode/unistr.h>
class hb_font_t;
class hb_buffer_t;
class hb_glyph_info_t;
#include <unicode/uscript.h>
#include <harfbuzz/hb.h>
// freetype2
extern "C"
@ -24,7 +23,7 @@ public:
text_shaping(FT_Face face);
~text_shaping();
uint32_t process_text(UnicodeString const& text);
uint32_t process_text(UnicodeString const& text, bool rtl, UScriptCode script);
hb_buffer_t *get_buffer() { return buffer_; }
protected:

2
src/text/layout.cpp
View file

@ -32,7 +32,7 @@ void text_layout::shape_text()
face_ptr face = *(face_set->begin()); //TODO: Implement font sets correctly
text_shaping shaper(face->get_face()); //TODO: Make this more efficient by caching this object in font_face
uint32_t bytes = shaper.process_text(itr->str);
uint32_t bytes = shaper.process_text(itr->str, itr->rtl == UBIDI_DEFAULT_RTL, itr->script);
hb_buffer_t *buffer = shaper.get_buffer();
unsigned num_glyphs = hb_buffer_get_length(buffer);

8
src/text/shaping.cpp
View file

@ -9,6 +9,7 @@
#define HAVE_FREETYPE
#include <harfbuzz/hb.h>
#include <harfbuzz/hb-ft.h>
#include <harfbuzz/hb-icu.h>
namespace mapnik
@ -20,6 +21,7 @@ text_shaping::text_shaping(FT_Face face)
buffer_ (hb_buffer_create()),
face_(face)
{
hb_buffer_set_unicode_funcs(buffer_, hb_icu_get_unicode_funcs());
load_font();
}
@ -29,7 +31,7 @@ text_shaping::~text_shaping()
hb_font_destroy(font_);
}
uint32_t text_shaping::process_text(const UnicodeString &text)
uint32_t text_shaping::process_text(UnicodeString const& text, bool rtl, UScriptCode script)
{
if (!font_) return 0;
hb_buffer_reset(buffer_);
@ -37,9 +39,9 @@ uint32_t text_shaping::process_text(const UnicodeString &text)
std::string s;
text.toUTF8String(s);
hb_buffer_add_utf8(buffer_, s.c_str(), s.length(), 0, -1);
hb_buffer_set_direction(buffer_, rtl?HB_DIRECTION_RTL:HB_DIRECTION_LTR);
hb_buffer_set_script(buffer_, hb_icu_script_to_script(script));
#if 0
hb_buffer_set_direction(buffer, hb_direction_from_string (direction, -1));
hb_buffer_set_script(buffer, hb_script_from_string (script, -1));
hb_buffer_set_language(buffer, hb_language_from_string (language, -1));
#endif
hb_shape(font_, buffer_, 0 /*features*/, 0 /*num_features*/);