<div dir="ltr">Thank you for your helping.<div>I didn't compile with UCDN. If I did that, Do I have to make any changes in the HBDrawText function?</div><div>Best regards.</div><div> </div><div> </div><div class="gmail_extra"><div class="gmail_quote">2014-11-29 6:58 GMT+09:00 Behdad Esfahbod <<a href="mailto:behdad@behdad.org" target="_blank">behdad@behdad.org</a>>: <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Humm. Re the shaping issue, you most probably don't have any Unicode callbacks set up. Did you compile with UCDN? You should. On 14-11-28 12:28 AM, aron wrote: > Hi > I use the latest version of HarfBuzz as a static library in VisualStudio, > The Mongolian string can't be rendered as I expected in my program > but rendered correctly in sh-view.exe. Could anyone tell me where is wrong in > my program. > > I found that the vaule -- glyph_info[i].codepoint is less than real glyph > index, the difference is always 87 in my case.What is the correct way to get > glyph index? > > void HBDrawText(HDC dc, int x, int y) > { > const char*fontFilePath = "./MongolianWhite.ttf"; > const wchar_t*text = L"ᠺᠣᠮᠫᠢᠦ᠋ᠲ᠋ᠧᠷ";//Mongolian string for render > > > FT_Libraryft_library; > FT_Faceft_face; > > FT_Init_FreeType(&ft_library); /* initialize library */ > FT_New_Face(ft_library, fontFilePath, 0, &ft_face); /* create face object */ > FT_Set_Pixel_Sizes(ft_face, 0, 40); /* set character size */ > > hb_font_t*font= hb_ft_font_create(ft_face, NULL); > hb_buffer_t*buffer= hb_buffer_create();; > > // > //set buffer > // > hb_buffer_add_utf16(buffer, (uint16_t *)text, lstrlen(text), 0, -1); > hb_buffer_set_direction(buffer, HB_DIRECTION_TTB); /* or LTR */ > hb_buffer_set_script(buffer, HB_SCRIPT_MONGOLIAN); /* see hb-unicode.h */ > hb_buffer_guess_segment_properties(buffer); > // > // > // > hb_shape(font, buffer, NULL, 0); > > intglyph_count= hb_buffer_get_length(buffer); > hb_glyph_info_t *glyph_info= hb_buffer_get_glyph_infos(buffer, 0); > > WCHARdbg_info[6]; > intpen_x= x; > intyBaseLine= y; > intglyphPosX= 0; > intglyphPosY= 0; > > for (int i = 0; i < glyph_count; ++i) > { > FT_UInt glyph_index = glyph_info[i].codepoint; > FT_Load_Glyph(ft_face, glyph_index, FT_LOAD_DEFAULT); > wsprintf(dbg_info, L"%d,", glyph_index + 87);//*why + 87?* > OutputDebugString(dbg_info); > > /* convert to an anti-aliased bitmap */ > FT_Render_Glyph(ft_face->glyph, FT_RENDER_MODE_NORMAL); > > FreeTypeDrawBitmap(dc, &ft_face->glyph->bitmap, pen_x + > ft_face->glyph->bitmap_left, > yBaseLine - ft_face->glyph->bitmap_top); > pen_x += ft_face->glyph->advance.x >> 6; > } > hb_buffer_destroy(buffer); > hb_font_destroy(font); > FT_Done_Face(ft_face); > FT_Done_FreeType(ft_library); > } > > this is the glyph index list generated by this program(incorrect). > 769,660,566,487,675,490,705 > hb-shape' s output(correct) is: > [769|660|566|484|678|492|705] > > > -- > Aron > > <div class=""><div class="h5">> _______________________________________________ > HarfBuzz mailing list > <a href="mailto:HarfBuzz@lists.freedesktop.org">HarfBuzz@lists.freedesktop.org</a> > <a href="http://lists.freedesktop.org/mailman/listinfo/harfbuzz" target="_blank">http://lists.freedesktop.org/mailman/listinfo/harfbuzz</a> > -- behdad <a href="http://behdad.org/" target="_blank">http://behdad.org/</a> </div></div></blockquote></div> <div> </div>-- <div class="gmail_signature"><div dir="ltr">Aron </div></div> </div></div>