fabric
Version:
Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.
1 lines • 2.74 kB
Source Map (JSON)
{"version":3,"file":"dom_misc.min.mjs","sources":["../../../src/util/dom_misc.ts"],"sourcesContent":["/**\n * Returns element scroll offsets\n * @param {HTMLElement} element Element to operate on\n * @return {Object} Object with left/top values\n */\nexport function getScrollLeftTop(element: HTMLElement | null) {\n const doc = element && getDocumentFromElement(element);\n let left = 0,\n top = 0;\n if (!element || !doc) {\n return { left, top };\n }\n\n const docElement = doc.documentElement,\n body = doc.body || {\n scrollLeft: 0,\n scrollTop: 0,\n };\n // While loop checks (and then sets element to) .parentNode OR .host\n // to account for ShadowDOM. We still want to traverse up out of ShadowDOM,\n // but the .parentNode of a root ShadowDOM node will always be null, instead\n // it should be accessed through .host. See http://stackoverflow.com/a/24765528/4383938\n // @ts-expect-error Set element to element parent, or 'host' in case of ShadowDOM\n while (element && (element.parentNode || element.host)) {\n // @ts-expect-error Set element to element parent, or 'host' in case of ShadowDOM\n element = element.parentNode || element.host;\n // @ts-expect-error because element is typed as HTMLElement but it can go up to document\n if (element === doc) {\n left = body.scrollLeft || docElement.scrollLeft || 0;\n top = body.scrollTop || docElement.scrollTop || 0;\n } else {\n left += element!.scrollLeft || 0;\n top += element!.scrollTop || 0;\n }\n\n if (element!.nodeType === 1 && element!.style.position === 'fixed') {\n break;\n }\n }\n\n return { left, top };\n}\n\nexport const getDocumentFromElement = (el: HTMLElement) =>\n el.ownerDocument || null;\n\nexport const getWindowFromElement = (el: HTMLElement) =>\n el.ownerDocument?.defaultView || null;\n"],"names":["getScrollLeftTop","element","doc","getDocumentFromElement","left","top","docElement","documentElement","body","scrollLeft","scrollTop","parentNode","host","nodeType","style","position","el","ownerDocument","getWindowFromElement","_el$ownerDocument","defaultView"],"mappings":"AAKO,SAASA,EAAiBC,GAC/B,MAAMC,EAAMD,GAAWE,EAAuBF,GAC9C,IAAIG,EAAO,EACTC,EAAM,EACR,IAAKJ,IAAYC,EACf,MAAO,CAAEE,OAAMC,OAGjB,MAAMC,EAAaJ,EAAIK,gBACrBC,EAAON,EAAIM,MAAQ,CACjBC,WAAY,EACZC,UAAW,GAOf,KAAOT,IAAYA,EAAQU,YAAcV,EAAQW,SAE/CX,EAAUA,EAAQU,YAAcV,EAAQW,QAExBV,GACdE,EAAOI,EAAKC,YAAcH,EAAWG,YAAc,EACnDJ,EAAMG,EAAKE,WAAaJ,EAAWI,WAAa,IAEhDN,GAAQH,EAASQ,YAAc,EAC/BJ,GAAOJ,EAASS,WAAa,GAGL,IAAtBT,EAASY,UAA8C,UAA5BZ,EAASa,MAAMC,YAKhD,MAAO,CAAEX,OAAMC,MACjB,CAEO,MAAMF,EAA0Ba,GACrCA,EAAGC,eAAiB,KAETC,EAAwBF,IAAe,IAAAG,EAAA,OAClCA,QAAhBA,EAAAH,EAAGC,qBAAHE,IAAgBA,OAAhBA,EAAAA,EAAkBC,cAAe,IAAI"}