epubjs
Version:
Parse and Render Epubs
1 lines • 224 kB
JavaScript
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d=class{constructor(t){this.container=t,this._views=[],this.length=0,this.hidden=!1}all(){return this._views}first(){return this._views[0]}last(){return this._views[this._views.length-1]}indexOf(t){return this._views.indexOf(t)}slice(){return this._views.slice.apply(this._views,arguments)}get(t){return this._views[t]}append(t){return this._views.push(t),this.container&&this.container.appendChild(t.element),this.length++,t}prepend(t){return this._views.unshift(t),this.container&&this.container.insertBefore(t.element,this.container.firstChild),this.length++,t}insert(t,e){return this._views.splice(e,0,t),this.container&&(e<this.container.children.length?this.container.insertBefore(t.element,this.container.children[e]):this.container.appendChild(t.element)),this.length++,t}remove(t){var e=this._views.indexOf(t);e>-1&&this._views.splice(e,1),this.destroy(t),this.length--}destroy(t){t.displayed&&t.destroy(),this.container&&this.container.removeChild(t.element),t=null}forEach(){return this._views.forEach.apply(this._views,arguments)}clear(){var t,e=this.length;if(this.length){for(var i=0;i<e;i++)t=this._views[i],this.destroy(t);this._views=[],this.length=0}}find(t){for(var e,i=this.length,n=0;n<i;n++)if((e=this._views[n]).displayed&&e.section.index==t.index)return e}displayed(){for(var t,e=[],i=this.length,n=0;n<i;n++)(t=this._views[n]).displayed&&e.push(t);return e}show(){for(var t,e=this.length,i=0;i<e;i++)(t=this._views[i]).displayed&&t.show();this.hidden=!1}hide(){for(var t,e=this.length,i=0;i<e;i++)(t=this._views[i]).displayed&&t.hide();this.hidden=!0}},f=i(1);class p{constructor(t){this.name="default",this.optsSettings=t.settings,this.View=t.view,this.request=t.request,this.renditionQueue=t.queue,this.q=new h.a(this),this.settings=Object(r.extend)(this.settings||{},{infinite:!0,hidden:!1,width:void 0,height:void 0,axis:void 0,writingMode:void 0,flow:"scrolled",ignoreClass:"",fullsize:void 0,allowScriptedContent:!1,allowPopups:!1}),Object(r.extend)(this.settings,t.settings||{}),this.viewSettings={ignoreClass:this.settings.ignoreClass,axis:this.settings.axis,flow:this.settings.flow,layout:this.layout,method:this.settings.method,width:0,height:0,forceEvenPages:!0,allowScriptedContent:this.settings.allowScriptedContent,allowPopups:this.settings.allowPopups},this.rendered=!1}render(t,e){let i=t.tagName;void 0!==this.settings.fullsize||!i||"body"!=i.toLowerCase()&&"html"!=i.toLowerCase()||(this.settings.fullsize=!0),this.settings.fullsize&&(this.settings.overflow="visible",this.overflow=this.settings.overflow),this.settings.size=e,this.settings.rtlScrollType=o(),this.stage=new u({width:e.width,height:e.height,overflow:this.overflow,hidden:this.settings.hidden,axis:this.settings.axis,fullsize:this.settings.fullsize,direction:this.settings.direction}),this.stage.attachTo(t),this.container=this.stage.getContainer(),this.views=new d(this.container),this._bounds=this.bounds(),this._stageSize=this.stage.size(),this.viewSettings.width=this._stageSize.width,this.viewSettings.height=this._stageSize.height,this.stage.onResize(this.onResized.bind(this)),this.stage.onOrientationChange(this.onOrientationChange.bind(this)),this.addEventListeners(),this.layout&&this.updateLayout(),this.rendered=!0}addEventListeners(){var t;window.addEventListener("unload",function(t){this.destroy()}.bind(this)),t=this.settings.fullsize?window:this.container,this._onScroll=this.onScroll.bind(this),t.addEventListener("scroll",this._onScroll)}removeEventListeners(){(this.settings.fullsize?window:this.container).removeEventListener("scroll",this._onScroll),this._onScroll=void 0}destroy(){clearTimeout(this.orientationTimeout),clearTimeout(this.resizeTimeout),clearTimeout(this.afterScrolled),this.clear(),this.removeEventListeners(),this.stage.destroy(),this.rendered=!1}onOrientationChange(t){let{orientation:e}=window;this.optsSettings.resizeOnOrientationChange&&this.resize(),clearTimeout(this.orientationTimeout),this.orientationTimeout=setTimeout(function(){this.orientationTimeout=void 0,this.optsSettings.resizeOnOrientationChange&&this.resize(),this.emit(f.c.MANAGERS.ORIENTATION_CHANGE,e)}.bind(this),500)}onResized(t){this.resize()}resize(t,e,i){let n=this.stage.size(t,e);this.winBounds=Object(r.windowBounds)(),this.orientationTimeout&&this.winBounds.width===this.winBounds.height?this._stageSize=void 0:this._stageSize&&this._stageSize.width===n.width&&this._stageSize.height===n.height||(this._stageSize=n,this._bounds=this.bounds(),this.clear(),this.viewSettings.width=this._stageSize.width,this.viewSettings.height=this._stageSize.height,this.updateLayout(),this.emit(f.c.MANAGERS.RESIZED,{width:this._stageSize.width,height:this._stageSize.height},i))}createView(t,e){return new this.View(t,Object(r.extend)(this.viewSettings,{forceRight:e}))}handleNextPrePaginated(t,e,i){let n;if("pre-paginated"===this.layout.name&&this.layout.divisor>1){if(t||0===e.index)return;if(n=e.next(),n&&!n.properties.includes("page-spread-left"))return i.call(this,n)}}display(t,e){var i=new r.defer,n=i.promise;(e===t.href||Object(r.isNumber)(e))&&(e=void 0);var s=this.views.find(t);if(s&&t&&"pre-paginated"!==this.layout.name){let t=s.offset();if("ltr"===this.settings.direction)this.scrollTo(t.left,t.top,!0);else{let e=s.width();this.scrollTo(t.left+e,t.top,!0)}if(e){let t=s.locationOf(e),i=s.width();this.moveTo(t,i)}return i.resolve(),n}this.clear();let o=!1;return"pre-paginated"===this.layout.name&&2===this.layout.divisor&&t.properties.includes("page-spread-right")&&(o=!0),this.add(t,o).then(function(t){if(e){let i=t.locationOf(e),n=t.width();this.moveTo(i,n)}}.bind(this),t=>{i.reject(t)}).then(function(){return this.handleNextPrePaginated(o,t,this.add)}.bind(this)).then(function(){this.views.show(),i.resolve()}.bind(this)),n}afterDisplayed(t){this.emit(f.c.MANAGERS.ADDED,t)}afterResized(t){this.emit(f.c.MANAGERS.RESIZE,t.section)}moveTo(t,e){var i=0,n=0;this.isPaginated?((i=Math.floor(t.left/this.layout.delta)*this.layout.delta)+this.layout.delta>this.container.scrollWidth&&(i=this.container.scrollWidth-this.layout.delta),(n=Math.floor(t.top/this.layout.delta)*this.layout.delta)+this.layout.delta>this.container.scrollHeight&&(n=this.container.scrollHeight-this.layout.delta)):n=t.top,"rtl"===this.settings.direction&&(i+=this.layout.delta,i-=e),this.scrollTo(i,n,!0)}add(t,e){var i=this.createView(t,e);return this.views.append(i),i.onDisplayed=this.afterDisplayed.bind(this),i.onResize=this.afterResized.bind(this),i.on(f.c.VIEWS.AXIS,t=>{this.updateAxis(t)}),i.on(f.c.VIEWS.WRITING_MODE,t=>{this.updateWritingMode(t)}),i.display(this.request)}append(t,e){var i=this.createView(t,e);return this.views.append(i),i.onDisplayed=this.afterDisplayed.bind(this),i.onResize=this.afterResized.bind(this),i.on(f.c.VIEWS.AXIS,t=>{this.updateAxis(t)}),i.on(f.c.VIEWS.WRITING_MODE,t=>{this.updateWritingMode(t)}),i.display(this.request)}prepend(t,e){var i=this.createView(t,e);return i.on(f.c.VIEWS.RESIZED,t=>{this.counter(t)}),this.views.prepend(i),i.onDisplayed=this.afterDisplayed.bind(this),i.onResize=this.afterResized.bind(this),i.on(f.c.VIEWS.AXIS,t=>{this.updateAxis(t)}),i.on(f.c.VIEWS.WRITING_MODE,t=>{this.updateWritingMode(t)}),i.display(this.request)}counter(t){"vertical"===this.settings.axis?this.scrollBy(0,t.heightDelta,!0):this.scrollBy(t.widthDelta,0,!0)}next(){var t;let e=this.settings.direction;if(this.views.length){if(!this.isPaginated||"horizontal"!==this.settings.axis||e&&"ltr"!==e)if(this.isPaginated&&"horizontal"===this.settings.axis&&"rtl"===e)this.scrollLeft=this.container.scrollLeft,"default"===this.settings.rtlScrollType?this.container.scrollLeft>0?this.scrollBy(this.layout.delta,0,!0):t=this.views.last().section.next():this.container.scrollLeft+-1*this.layout.delta>-1*this.container.scrollWidth?this.scrollBy(this.layout.delta,0,!0):t=this.views.last().section.next();else if(this.isPaginated&&"vertical"===this.settings.axis){this.scrollTop=this.container.scrollTop,this.container.scrollTop+this.container.offsetHeight<this.container.scrollHeight?this.scrollBy(0,this.layout.height,!0):t=this.views.last().section.next()}else t=this.views.last().section.next();else this.scrollLeft=this.container.scrollLeft,this.container.scrollLeft+this.container.offsetWidth+this.layout.delta<=this.container.scrollWidth?this.scrollBy(this.layout.delta,0,!0):t=this.views.last().section.next();if(t){this.clear(),this.updateLayout();let e=!1;return"pre-paginated"===this.layout.name&&2===this.layout.divisor&&t.properties.includes("page-spread-right")&&(e=!0),this.append(t,e).then(function(){return this.handleNextPrePaginated(e,t,this.append)}.bind(this),t=>t).then(function(){this.isPaginated||"horizontal"!==this.settings.axis||"rtl"!==this.settings.direction||"default"!==this.settings.rtlScrollType||this.scrollTo(this.container.scrollWidth,0,!0),this.views.show()}.bind(this))}}}prev(){var t;let e=this.settings.direction;if(this.views.length){if(!this.isPaginated||"horizontal"!==this.settings.axis||e&&"ltr"!==e)if(this.isPaginated&&"horizontal"===this.settings.axis&&"rtl"===e)this.scrollLeft=this.container.scrollLeft,"default"===this.settings.rtlScrollType?this.container.scrollLeft+this.container.offsetWidth<this.container.scrollWidth?this.scrollBy(-this.layout.delta,0,!0):t=this.views.first().section.prev():this.container.scrollLeft<0?this.scrollBy(-this.layout.delta,0,!0):t=this.views.first().section.prev();else if(this.isPaginated&&"vertical"===this.settings.axis){this.scrollTop=this.container.scrollTop,this.container.scrollTop>0?this.scrollBy(0,-this.layout.height,!0):t=this.views.first().section.prev()}else t=this.views.first().section.prev();else this.scrollLeft=this.container.scrollLeft,this.container.scrollLeft>0?this.scrollBy(-this.layout.delta,0,!0):t=this.views.first().section.prev();if(t){this.clear(),this.updateLayout();let e=!1;return"pre-paginated"===this.layout.name&&2===this.layout.divisor&&"object"!=typeof t.prev()&&(e=!0),this.prepend(t,e).then(function(){var e;if("pre-paginated"===this.layout.name&&this.layout.divisor>1&&(e=t.prev()))return this.prepend(e)}.bind(this),t=>t).then(function(){this.isPaginated&&"horizontal"===this.settings.axis&&("rtl"===this.settings.direction?"default"===this.settings.rtlScrollType?this.scrollTo(0,0,!0):this.scrollTo(-1*this.container.scrollWidth+this.layout.delta,0,!0):this.scrollTo(this.container.scrollWidth-this.layout.delta,0,!0)),this.views.show()}.bind(this))}}}current(){var t=this.visible();return t.length?t[t.length-1]:null}clear(){this.views&&(this.views.hide(),this.scrollTo(0,0,!0),this.views.clear())}currentLocation(){return this.updateLayout(),this.isPaginated&&"horizontal"===this.settings.axis?this.location=this.paginatedLocation():this.location=this.scrolledLocation(),this.location}scrolledLocation(){let t=this.visible(),e=this.container.getBoundingClientRect(),i=e.height<window.innerHeight?e.height:window.innerHeight,n=e.width<window.innerWidth?e.width:window.innerWidth,s="vertical"===this.settings.axis,r=(this.settings.direction,0);return this.settings.fullsize&&(r=s?window.scrollY:window.scrollX),t.map(t=>{let o,a,h,l,{index:c,href:u}=t.section,d=t.position(),f=t.width(),p=t.height();s?(o=r+e.top-d.top+0,a=o+i-0,l=this.layout.count(p,i).pages,h=i):(o=r+e.left-d.left+0,a=o+n-0,l=this.layout.count(f,n).pages,h=n);let g=Math.ceil(o/h),m=[],v=Math.ceil(a/h);if("rtl"===this.settings.direction&&!s){let t=g;g=l-v,v=l-t}m=[];for(var y=g;y<=v;y++){let t=y+1;m.push(t)}return{index:c,href:u,pages:m,totalPages:l,mapping:this.mapping.page(t.contents,t.section.cfiBase,o,a)}})}paginatedLocation(){let t=this.visible(),e=this.container.getBoundingClientRect(),i=0,n=0;return this.settings.fullsize&&(i=window.scrollX),t.map(t=>{let s,r,o,a,{index:h,href:l}=t.section,c=t.position(),u=t.width();"rtl"===this.settings.direction?(s=e.right-i,a=Math.min(Math.abs(s-c.left),this.layout.width)-n,o=c.width-(c.right-s)-n,r=o-a):(s=e.left+i,a=Math.min(c.right-s,this.layout.width)-n,r=s-c.left+n,o=r+a),n+=a;let d=this.mapping.page(t.contents,t.section.cfiBase,r,o),f=this.layout.count(u).pages,p=Math.floor(r/this.layout.pageWidth),g=[],m=Math.floor(o/this.layout.pageWidth);if(p<0&&(p=0,m+=1),"rtl"===this.settings.direction){let t=p;p=f-m,m=f-t}for(var v=p+1;v<=m;v++){let t=v;g.push(t)}return{index:h,href:l,pages:g,totalPages:f,mapping:d}})}isVisible(t,e,i,n){var s=t.position(),r=n||this.bounds();return"horizontal"===this.settings.axis&&s.right>r.left-e&&s.left<r.right+i||"vertical"===this.settings.axis&&s.bottom>r.top-e&&s.top<r.bottom+i}visible(){for(var t,e=this.bounds(),i=this.views.displayed(),n=i.length,s=[],r=0;r<n;r++)t=i[r],!0===this.isVisible(t,0,0,e)&&s.push(t);return s}scrollBy(t,e,i){let n="rtl"===this.settings.direction?-1:1;i&&(this.ignore=!0),this.settings.fullsize?window.scrollBy(t*n,e*n):(t&&(this.container.scrollLeft+=t*n),e&&(this.container.scrollTop+=e)),this.scrolled=!0}scrollTo(t,e,i){i&&(this.ignore=!0),this.settings.fullsize?window.scrollTo(t,e):(this.container.scrollLeft=t,this.container.scrollTop=e),this.scrolled=!0}onScroll(){let t,e;this.settings.fullsize?(t=window.scrollY,e=window.scrollX):(t=this.container.scrollTop,e=this.container.scrollLeft),this.scrollTop=t,this.scrollLeft=e,this.ignore?this.ignore=!1:(this.emit(f.c.MANAGERS.SCROLL,{top:t,left:e}),clearTimeout(this.afterScrolled),this.afterScrolled=setTimeout(function(){this.emit(f.c.MANAGERS.SCROLLED,{top:this.scrollTop,left:this.scrollLeft})}.bind(this),20))}bounds(){return this.stage.bounds()}applyLayout(t){this.layout=t,this.updateLayout(),this.views&&this.vie