{"id":81072,"date":"2020-05-10T19:42:00","date_gmt":"2020-05-10T17:42:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/razrabotchiki-steka-shriftov-linux-otkazalis-ot-podderzhki-myagkogo-sglazhivaniya"},"modified":"2020-05-10T19:42:00","modified_gmt":"2020-05-10T17:42:00","slug":"razrabotchiki-steka-shriftov-linux-otkazalis-ot-podderzhki-myagkogo-sglazhivaniya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/razrabotchiki-steka-shriftov-linux-otkazalis-ot-podderzhki-myagkogo-sglazhivaniya","title":{"rendered":"Linuxi fontide kogu arendajad loobusid pehmest silumisest","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

M\u00f5ned kasutajad, kes kasutavad «hintfull» hinda, on v\u00f5inud m\u00e4rgata, et Pango versioonilt 1.43 versioonile 1.44 \u00fclemisel kerning<\/a><\/noindex> m\u00f5nede fontide perekondade halvenes<\/a><\/noindex> v\u00f5i t\u00e4ielikult<\/a><\/noindex> katkestus<\/a><\/noindex>.<\/p>\n

\"Linuxi<\/a><\/noindex><\/center><\/p>\n

Probleemi p\u00f5hjuseks on see, et Pango<\/a><\/noindex> l\u00fclitus FreeType'ist<\/a><\/noindex> fontide keringen (glaifide vahelise kauguse) teabe saamiseks HarfBuzz<\/a><\/noindex>, mille arendajad otsustasid mitte toetada<\/a><\/noindex> toimub kirjutiste sujuvuse loomine meetodil «hintfull». On m\u00e4rgitud, et k\u00f5rge pikslitiheduse (Hi-DPI) ekraanidel ei esine probleeme kirjutiste kuvamisega, kui kasutatakse muid hinda meetodeid peale «hintfull».<\/p>\n

Vastus<\/a><\/noindex> HarfBuzzi arendaja (Behdad Esfahbod) vastava probleemide arutelu k\u00e4igus:<\/p>\n

\n

Ma proovisin kasutada muid hindestusstiile peale hintfull, kuid ainult see annab fontide kuvatamise, mis on Windows 7-s l\u00e4h\u8fd1 ClearType v2-le, mis minu arvates on parim renderdus olemasolevate lahenduste seas.<\/i><\/p>\n

T\u00f5ene. Seet\u00f5ttu otsustasime seda enam mitte toetada. V\u00f5ite proovida harjuda «uduse» renderimisega v\u00f5i proovida leida midagi muud. Te kasutate ju Open Source'i, kas pole?<\/p><\/blockquote>\n<\/blockquote>\n

T\u00e4iendav teave edasise arutelu p\u00f5hjal: <\/p>\n

J\u00e4rgmistes kommentaarides arendaja selgitas<\/a><\/noindex>, et avatud l\u00e4htekoodiga tarkvara (\u00d6S) annab valikuv\u00f5imaluse ning need, kellele praegune seisund ei sobi, saavad luua Pango forki. HarfBuzzi arendajad ei saa aga m\u00f5jutada selle hooldamist ja seal tehtavaid otsuseid. Behdad Esfahbod, praegune HarfBuzzi hooldaja, kes on komiteerimiste arvu poolest esikohal m\u00f5lemas<\/a><\/noindex>
\nprojektis<\/a><\/noindex>, mainis, et ta ei ole \u00fcle 10 aasta olnud seotud Red Hatiga ja ei ole Pango hooldaja. Alates 2010. aastast on ta l\u00e4inud Google'i ja tegeleb seal ainult HarfBuzziga, mis oli varem tema isiklik projekt. HarfBuzz ei kontrolli<\/a><\/noindex> kujundusprotsessi ning Pango v\u00f5ib oma poolel k\u00fcsitud hinnatava re\u017eiime \u00fcle kirjutada. <\/p>\n

Teine HarfBuzzi arendaja toetas<\/a><\/noindex>, et probleem on Pango poolel, kuna HarfBuzz ei ole fontide renderdamise s\u00fcsteem ega toeta arhitektuuriliselt hinnatavat. Kui Pango vajab hinnatava s\u00e4ilitamist, ei ole HarfBuzzile \u00fcleminek see valik, mis tagab selle toe. kui<\/a><\/noindex> HarfBuzz'i hindaamise p\u00f5hjustena on m\u00e4rgitud, et m\u00f5ned hindaamise re\u017eiimid toovad kaasa algse gl\u00fc\u00fcfi laiuse muutumise ja see muutumine s\u00f5ltub pikslisuurusest. Varem tegi Pango sarnaseid operatsioone FreeType'i kaudu, mis toetas hindaamist, kuid seej\u00e4rel l\u00fclitus HarfBuzz'i, mis pakub gl\u00fc\u00fcfide t\u00f6\u00f6tlemist s\u00f5ltumatult nende suurusest. Seet\u00f5ttu on Pango kasutamisega seotud probleemide lahendamine Pango vastutusalas, mitte HarfBuzz'is.<\/p>\n

L\u00f5puks Behdad Esfahbod avaldas<\/a><\/noindex> suur tagasivaatav \u00fclevaade Linuxi fontide virna arengust. P\u00e4rast tema lahkumist Google'isse j\u00e4id Pango ja Cairo raamatukogud praktiliselt t\u00e4helepanuta ja langesid stagnatsiooni. HarfBuzz'is keskenduti adaptiivsete muutuva fondi toetamisele, samas kui Red Hat suunas oma t\u00e4helepanu peamiselt GTK ja Glib'i peale. Aja jooksul kantakse muutuva fondi alased arengud FreeType'i, fontconfig'i ja Cairo'sse, kuid j\u00e4id Pango's tegemata arendajate puudumise t\u00f5ttu. Uutele Pango API-dele p\u00e4\u00e4semine oli tagatud FontMap'i abstraktsiooni kaudu ja seda toetati ainult FreeType'i p\u00f5hinevatele tagapindadele. Windowsi ja macOS'i tagapindade hooldust ei ole enam \u00fcle 10 aasta tehtud. <\/p>\n

P\u00e4rast mobiilseadmete ja brauserite laienemist l\u00f5petas Microsoft Windows 8-s subpikslite renderimise toetamise ja GDI-stiilis joonistamise. macOS on aga alati toetanud joonistamist, mida antud arutelus nimetatakse «uduseks». Alates 2018. aastast on mitu HarfBuzz'i arendajat proovinud tuua viimaste aastate funktsioonid HarfBuzz'ist Pango'le. Samal ajal GTK4 arendamisel viidi l\u00e4bi \u00fcleminek OpenGL-p\u00f5hisele joonistusele, mis h\u00f5lmab teksti lineaarset skaleerimist, mis teravdas konflikti pikslijoonistamise ja skaleeritava paigutuse vahel.<\/p>\n

LibreOffice, Chrome ja Firefox on l\u00e4inud \u00fcle HarfBuzz'i kasutamisele \u00fchtse shaping-mootorina, mis on t\u00e4hendanud rasterfondide ja Type1 formaadi toe l\u00f5petamist. Need, kellele rasterfondid on vajalikud, soovitati need teisendada OpenType konteineriks. Adobe'le esitati taotlus Type1 rakendamiseks HarfBuzz'is, kuid nad vastasid, et selles pole m\u00f5tet, kuna nad l\u00f5petavad ise Type1 toe sel aastal. <\/p>\n

Tehnoloogia edasil\u00fckkamiseks tehti sarnane otsus \u00fcleminekuks HarfBuzzile ka Pango teeki. Hind oli m\u00f5nede 20 aasta vanuste vanade tehnoloogiate toe l\u00f5petamine. Arvestades arendajate piiratud ressursse, on selge, et k\u00f5igega ei j\u00f5ua tegeleda ja vanade tehnoloogiate s\u00e4ilitamise huvides v\u00f5ivad inimesed proovida leida kedagi, kes oleks valmis puuduvate funktsionaalsuste hooldamisega tegelema. V\u00f5rdluseks tuuakse GNOME3, mille ilmumisega said rahulolematud j\u00e4tkata vanade GNOME2 tehnoloogiate arendamist Mate ja Cinnamon projektide raames. Sama kehtib ka Pango kohta, kuid huvilisi pole seni leitud.<\/p>\n

<\/a><\/noindex><\/p>\n

Allikas: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0442\u0435\u043c, \u0447\u0442\u043e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 Pango \u043f\u0435\u0440\u0435\u0448\u043b\u0430 \u043e\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f FreeType \u0434\u043b\u044f \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043e \u043a\u0451\u0440\u043d\u0438\u043d\u0433\u0435 (\u0440\u0430\u0441\u0441\u0442\u043e\u044f\u043d\u0438\u0438 \u043c\u0435\u0436\u0434\u0443 \u0433\u043b\u0438\u0444\u0430\u043c\u0438) \u0448\u0440\u0438\u0444\u0442\u043e\u0432 \u043a HarfBuzz, \u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043f\u0440\u0438\u043d\u044f\u043b\u0438 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c 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