They are all heuristics. Not sure which one is more accurate. On Thu, Jun 30, 2016 at 9:15 PM, <[email protected]> wrote: > isn't that less accurate than what i’m doing here? since at least we are > accounting for changes in ligature width or kerning > >> On Jul 1, 2016, at 12:10 AM, Behdad Esfahbod <[email protected]> wrote: >> >>> On Thu, Jun 30, 2016 at 9:06 PM, <[email protected]> wrote: >>> >>> >>>> On Jun 30, 2016, at 11:41 PM, Behdad Esfahbod <[email protected]> wrote: >>>> >>>> No, it wouldn't be safe necessarily. That's exactly what the >>>> unsafe-to-break API is about, but that's not finished yet. For now, >>>> you have to reshape the entire new string. >>> >>> That’s O(n^2) in terms of the amount of shaping that has to be done per >>> paragraph based on the length of the paragraph text, and not workable in >>> practice >> >> What Pango (and possibly other systems) does is to shape the full >> paragraph, then find line-break location, then reshape the >> just-decided line but continue with the rest of the paragraph as if >> the shaping wouldn't change the width much. >> >>>>> On Thu, Jun 30, 2016 at 8:31 PM, Kelvin Ma <[email protected]> >>>>> wrote: >>>>> If I have the string A = 'affifibcd' and the master list of shaped glyphs >>>>> >>>>> [a 0] [ffi 1] [fi 4] [b 6] [c 7] [d 8] >>>>> >>>>> and I wanted to shape the substring A[2:] ('fifibcd'), could I simply take >>>>> my preshaped glyphs after the cluster at or above (ceiling) i = 2 and only >>>>> reshape the segment A[2:6]? >>>>> >>>>> So I would reuse the glyphs >>>>> >>>>> [fi 4] [b 6] [c 7] [d 8] >>>>> >>>>> and reshape the segment A[2:6] = 'fifi' to get >>>>> >>>>> [fi 2] [fi 4] >>>>> >>>>> and add them together (dropping the last glyph in the reshaped segment) to >>>>> get >>>>> >>>>> [fi 2] [fi 4] [b 6] [c 7] [d 8] >>>>> >>>>> ? >>>>> Would this be the same result as reshaping the entire segment A[2:]? Would >>>>> this still work for RTL text, or a substring that’s on the left-hand side >>>>> of >>>>> the parent string like A[:5] = 'affif'? >>>>> >>>>> _______________________________________________ >>>>> HarfBuzz mailing list >>>>> [email protected] >>>>> https://lists.freedesktop.org/mailman/listinfo/harfbuzz >>>>> >>>> >>>> >>>> >>>> -- >>>> behdad >>>> http://behdad.org/ >> >> >> >> -- >> behdad >> http://behdad.org/
-- behdad http://behdad.org/ _______________________________________________ HarfBuzz mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/harfbuzz
