Servo 0.2

Bylo zveřejněno vydání Servo 0.2.0 — nové verzi experimentálního prohlížečového enginu napsaného v Rustu. Vydání bylo 31. května 2026 a obsahuje změny provedené v dubnu: vývojáři napočítali celkem 534 commitů, což se stalo novým měsíčním rekordem projektu. Servo se vyvíjí jako nezávislý projekt pod záštitou Linux Foundation Europe a je zaměřeno na vytvoření lehkého vestavěného webového enginu pro aplikace, mobilní platformy a experimentální prohlížečová rozhraní.

Hlavní změny

• Bylo přepracováno uživatelské rozhraní servoshell pro Android.
  Ve verzi pro Android byla aktualizována prohlížečová rozhraní a přidána nová obrazovka historie. APK se zmenšil přibližně o 30 % a byl opraven problém s černou obrazovkou při uzavírání nastavení nebo při návratu z jiné aplikace. Pro OpenHarmony je nyní možné zavírat karty.

• Byla zlepšena podpora čínštiny, japonštiny a korejštiny.
  V enginu rozložení byla opravena manipulace s přenášecími pravidly pro CJK jazyky a v uživatelském rozhraní servoshell na Windows, Linux a FreeBSD byly zahrnuty CJK písma. To je důležité pro skutečné zobrazení stránek v jazycích, kde se pravidla přenosu a výběru písem liší od latinky.

• Byl přidán interaktivní náhled JSON.
  Pokud otevřete JSON soubor jako hlavní dokument, Servo ho nyní zobrazuje prostřednictvím interaktivního pretty-printeru. To dělá motor pohodlnějším nejen pro běžné prohlížení stránek, ale i pro vývojáře, kteří musí otevírat API odpovědi a strukturovaná data přímo v prohlížeči.

• Byla rozšířena podpora Web Platform.
  V Servu se objevily , , přehrávání

• Byly přidány nové DOM API.
  Byly implementovány události selectionchange pro a , experimentální StorageManager, activeElement pro Document a ShadowRoot, crypto.subtle.supports(), vlastnosti cellPadding, cellSpacing a align u HTMLTableElement, relatedTarget pro události focus a blur, a také transferFromImageBitmap() pro ImageBitmapRenderingContext. Vývojáři zvlášť upozorňují, že Servo se stalo prvním velkým prohlížečovým enginem s podporou crypto.subtle.supports().</p> </li> <li><p><strong>Byla zlepšena navigace pomocí klávesnice a práce s fokusem.</strong><br> Záložka nyní umí přecházet přes hranice , a Ctrl+Backspace — nebo Option+Backspace na macOS — vymaže celé slovo v textových polích. Byly také opraveny chyby zaostření a IME v desktopové verzi servoshell.</p> </li> <li><p><strong>Nástroje pro vývojáře byly rozšířeny.</strong><br> Ve spolupráci s Firefox DevTools byly vylepšeny karty Inspector, Console a Debugger. Panel Rules nyní zobrazuje prohlášení z @layer, v Console a Debugger je k dispozici více informací o funkcích, polích, objektech a dalších hodnotách, byla přidána inspekce lokálních a globálních proměnných přes Scopes, ladění worker skriptů a počáteční podpora Style Editor.</p> </li> <li><p><strong>Zabezpečení bylo posíleno.</strong><br> CryptoKey nyní přepisuje buffery s klíčovým materiálem po použití. Byly opraveny problémy s přístupem k DOM API mezi dokumenty s různými originy, chyby izolace localStorage a sessionStorage v sandboxovaném iframe a iframe srcdoc, nesprávná dostupnost IndexedDB v sandboxovaném iframe a workeru z data: URL, možnost přepsání cookies mezi některými IP-origin, čtení paměti za hranicemi bufferu v texImage3D() pro WebGL2, a také nejasné chování v obsluze signálů servoshell.</p> </li> <li><p><strong>Pokrok byl učiněn v rámci IndexedDB a úložiště.</strong><br> IndexedDB je nyní zahrnut v experimentálním režimu servoshell a byl přenesen na nový systém "client storage", který by měl Servo poskytnout jednotný formát úložiště na disku a společné řízení kvót pro webové funkce ukládající data. Byly také vylepšeny dotazy podle klíčových rozsahů, zpracování transakcí, klíčů, hodnot a výjimek.</p> </li> <li><p><strong>API pro integraci Serva bylo aktualizováno.</strong><br> Jelikož se jedná o druhé měsíční vydání knihovny Servo, vývojáři objasnili politiku kompatibility: verze 0.2.0 se považuje za rozbitou aktualizaci vůči 0.1.x. Bylo přidáno načítání URL s vlastními HTTP hlavičkami přes WebView::load_request, asynchronní získání cookies, čištění pouze session cookies bez odstranění trvalých cookies, předávání destination a referrer_url při zachycení požadavků a také režim dočasného uložiště pro izolaci dat relace.</p> </li> <li><p><strong>Byly opraveny chyby zobrazení a chování stránek.</strong><br> Vývojáři zmiňují opravy pro console.log, CSS animace, box-shadow, display: contents, display: inline-flex, display: table-cell, overflow: clip, absolutní pozicování uvnitř grid, word-spacing, removeChild() na Document a URL.revokeObjectURL(). Také byl vylepšen vzhled a placeholder u <textarea>.</p> </li> <li><p><strong>Výkon byl zvýšen a spotřeba paměti snížena.</strong><br> Opraveny byly velké neefektivity: zrychlilo se načítání specifikace ECMAScript díky přepracování zpracování atributů id a name, první TLS relace se zrychlila o 30–60 ms, došlo k poklesu IPC provozu mezi vlákny, snížena byla paměťová náročnost DOM uzlů Attr, Text a CharacterData o 16 bajtů na uzel, byla opravena únik paměti při odstraňování <video controls> a <audio controls>. Stránka about:memory nyní přesněji zaznamenává alokace paměti, včetně libc alokací na Linuxu.</p> </li></ul><p>Servo 0.2 je tedy dalším krokem k přeměně projektu na použitelný webový engine pro vestavěné zařízení: zlepšuje se mobilní rozhraní, roste kompatibilita s moderními webovými standardy, jsou odstraňovány bezpečnostní chyby a postupně se stabilizuje API pro vývojáře aplikací.</p><p>Zdroj: <a content=nofollow rel=nofollow href=https://www.linux.org.ru/news/internet/18307376>linux.org.ru</a></p></div></article><div style="width: 100%; text-align: center; margin: 0; padding: 31px 0 0 0;"> <a href=https://prohoster.info/cs/vps/ > <img class=lazy src=data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20700%2086%22%3E%3C%2Fsvg%3E data-src=https://prohoster.info/wp-content/uploads/2025/10/photo_2025-10-27_14-51-22.webp data-srcset=" https://prohoster.info/wp-content/uploads/2025/10/photo_2025-10-27_14-51-22-350.webp 350w, 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