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ngx-extended-pdf-viewer

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Embedding PDF files in your Angular application. Highly configurable viewer including the toolbar, sidebar, and all the features you're used to.

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/** * @fileoverview added by tsickle * Generated from: lib/pinch-on-mobile-support.ts * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc */ var PinchOnMobileSupport = /** @class */ (function () { function PinchOnMobileSupport(_zone) { this._zone = _zone; this.startX = 0; this.startY = 0; this.initialPinchDistance = 0; this.pinchScale = 1; if (this.isMobile()) { this.initializePinchZoom(); } } /** * @private * @return {?} */ PinchOnMobileSupport.prototype.isMobile = /** * @private * @return {?} */ function () { return 'ontouchstart' in document.documentElement; }; /** * @private * @param {?} event * @return {?} */ PinchOnMobileSupport.prototype.onViewerTouchStart = /** * @private * @param {?} event * @return {?} */ function (event) { this.initialPinchDistance = 0; if (event.touches.length === 2) { /** @type {?} */ var rect = this.container.getBoundingClientRect(); // + this.container.scrollTop if (event.touches[0].pageX >= rect.left && event.touches[0].pageX <= rect.right) { if (event.touches[0].pageY >= rect.top /* && event.touches[0].pageY <= rect.bottom */) { if (event.touches[1].pageX >= rect.left && event.touches[1].pageX <= rect.right) { if (event.touches[1].pageY >= rect.top /* && event.touches[1].pageY <= rect.bottom */) { this.startX = (event.touches[0].pageX + event.touches[1].pageX) / 2; this.startY = (event.touches[0].pageY + event.touches[1].pageY) / 2; this.initialPinchDistance = Math.hypot(event.touches[1].pageX - event.touches[0].pageX, event.touches[1].pageY - event.touches[0].pageY); event.preventDefault(); event.stopPropagation(); } } } } } }; /** * @private * @param {?} event * @return {?} */ PinchOnMobileSupport.prototype.onViewerTouchMove = /** * @private * @param {?} event * @return {?} */ function (event) { if (this.initialPinchDistance <= 0 || event.touches.length !== 2) { return; } if (this.pinchScale !== 1) { event.preventDefault(); } /** @type {?} */ var pinchDistance = Math.hypot(event.touches[1].pageX - event.touches[0].pageX, event.touches[1].pageY - event.touches[0].pageY); /** @type {?} */ var originX = this.startX + this.container.scrollLeft; /** @type {?} */ var originY = this.startY + this.container.scrollTop; this.pinchScale = pinchDistance / this.initialPinchDistance; this.viewer.style.transform = "scale(" + this.pinchScale + ")"; this.viewer.style.transformOrigin = originX + "px " + originY + "px"; event.preventDefault(); event.stopPropagation(); }; /** * @private * @param {?} event * @return {?} */ PinchOnMobileSupport.prototype.onViewerTouchEnd = /** * @private * @param {?} event * @return {?} */ function (event) { /** @type {?} */ var PDFViewerApplication = ((/** @type {?} */ (window))).PDFViewerApplication; if (this.initialPinchDistance <= 0) { return; } this.viewer.style.transform = "none"; this.viewer.style.transformOrigin = "unset"; PDFViewerApplication.pdfViewer.currentScale *= this.pinchScale; /** @type {?} */ var rect = this.container.getBoundingClientRect(); /** @type {?} */ var dx = this.startX - rect.left; /** @type {?} */ var dy = this.startY - rect.top; this.container.scrollLeft += dx * (this.pinchScale - 1); this.container.scrollTop += dy * (this.pinchScale - 1); this.resetPinchZoomParams(); event.preventDefault(); event.stopPropagation(); }; /** * @private * @return {?} */ PinchOnMobileSupport.prototype.resetPinchZoomParams = /** * @private * @return {?} */ function () { this.startX = this.startY = this.initialPinchDistance = 0; this.pinchScale = 1; }; /** * @return {?} */ PinchOnMobileSupport.prototype.initializePinchZoom = /** * @return {?} */ function () { var _this = this; this.viewer = document.getElementById('viewer'); this.container = (/** @type {?} */ (document.getElementById('viewerContainer'))); this._zone.runOutsideAngular((/** * @return {?} */ function () { document.addEventListener('touchstart', _this.onViewerTouchStart.bind(_this)); document.addEventListener('touchmove', _this.onViewerTouchMove.bind(_this), { passive: false }); document.addEventListener('touchend', _this.onViewerTouchEnd.bind(_this)); })); }; /** * @return {?} */ PinchOnMobileSupport.prototype.destroyPinchZoom = /** * @return {?} */ function () { if (this.isMobile()) { document.removeEventListener('touchstart', this.onViewerTouchStart); document.removeEventListener('touchmove', this.onViewerTouchMove); document.removeEventListener('touchend', this.onViewerTouchEnd); } }; return PinchOnMobileSupport; }()); export { PinchOnMobileSupport }; if (false) { /** * @type {?} * @private */ PinchOnMobileSupport.prototype.viewer; /** * @type {?} * @private */ PinchOnMobileSupport.prototype.container; /** * @type {?} * @private */ PinchOnMobileSupport.prototype.startX; /** * @type {?} * @private */ PinchOnMobileSupport.prototype.startY; /** * @type {?} * @private */ PinchOnMobileSupport.prototype.initialPinchDistance; /** * @type {?} * @private */ PinchOnMobileSupport.prototype.pinchScale; /** * @type {?} * @private */ PinchOnMobileSupport.prototype._zone; } //# 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{ NgZone } from '@angular/core';\n\nexport class PinchOnMobileSupport {\n  private viewer: any;\n  private container: HTMLDivElement;\n  private startX = 0;\n  private startY = 0;\n  private initialPinchDistance = 0;\n  private pinchScale = 1;\n\n  constructor(private _zone: NgZone) {\n    if (this.isMobile()) {\n      this.initializePinchZoom();\n    }\n  }\n\n  private isMobile() {\n    return 'ontouchstart' in document.documentElement;\n  }\n\n  private onViewerTouchStart(event: TouchEvent): void {\n    this.initialPinchDistance = 0;\n    if (event.touches.length === 2) {\n      const rect = this.container.getBoundingClientRect();\n      // + this.container.scrollTop\n      if (event.touches[0].pageX >= rect.left && event.touches[0].pageX <= rect.right) {\n        if (event.touches[0].pageY >= rect.top  /* && event.touches[0].pageY <= rect.bottom */) {\n          if (event.touches[1].pageX >= rect.left && event.touches[1].pageX <= rect.right) {\n            if (event.touches[1].pageY >= rect.top /* && event.touches[1].pageY <= rect.bottom  */) {\n              this.startX = (event.touches[0].pageX + event.touches[1].pageX) / 2;\n              this.startY = (event.touches[0].pageY + event.touches[1].pageY) / 2;\n              this.initialPinchDistance = Math.hypot(event.touches[1].pageX - event.touches[0].pageX, event.touches[1].pageY - event.touches[0].pageY);\n              event.preventDefault();\n              event.stopPropagation();\n            }\n          }\n        }\n      }\n    }\n  }\n\n  private onViewerTouchMove(event: TouchEvent): void {\n    if (this.initialPinchDistance <= 0 || event.touches.length !== 2) {\n      return;\n    }\n    if (this.pinchScale !== 1) {\n      event.preventDefault();\n    }\n    const pinchDistance = Math.hypot(event.touches[1].pageX - event.touches[0].pageX, event.touches[1].pageY - event.touches[0].pageY);\n    const originX = this.startX + this.container.scrollLeft;\n    const originY = this.startY + this.container.scrollTop;\n    this.pinchScale = pinchDistance / this.initialPinchDistance;\n    this.viewer.style.transform = `scale(${this.pinchScale})`;\n    this.viewer.style.transformOrigin = `${originX}px ${originY}px`;\n    event.preventDefault();\n    event.stopPropagation();\n  }\n\n  private onViewerTouchEnd(event: TouchEvent): void {\n    const PDFViewerApplication: any = (window as any).PDFViewerApplication;\n    if (this.initialPinchDistance <= 0) {\n      return;\n    }\n    this.viewer.style.transform = `none`;\n    this.viewer.style.transformOrigin = `unset`;\n    PDFViewerApplication.pdfViewer.currentScale *= this.pinchScale;\n    const rect = this.container.getBoundingClientRect();\n    const dx = this.startX - rect.left;\n    const dy = this.startY - rect.top;\n    this.container.scrollLeft += dx * (this.pinchScale - 1);\n    this.container.scrollTop += dy * (this.pinchScale - 1);\n    this.resetPinchZoomParams();\n    event.preventDefault();\n    event.stopPropagation();\n  }\n\n  private resetPinchZoomParams(): void {\n    this.startX = this.startY = this.initialPinchDistance = 0;\n    this.pinchScale = 1;\n  }\n\n  public initializePinchZoom(): void {\n    this.viewer = document.getElementById('viewer');\n    this.container = document.getElementById('viewerContainer') as HTMLDivElement;\n    this._zone.runOutsideAngular(() => {\n      document.addEventListener('touchstart', this.onViewerTouchStart.bind(this));\n      document.addEventListener('touchmove', this.onViewerTouchMove.bind(this), { passive: false });\n      document.addEventListener('touchend', this.onViewerTouchEnd.bind(this));\n    });\n  }\n\n  public destroyPinchZoom(): void {\n    if (this.isMobile()) {\n      document.removeEventListener('touchstart', this.onViewerTouchStart);\n      document.removeEventListener('touchmove', this.onViewerTouchMove);\n      document.removeEventListener('touchend', this.onViewerTouchEnd);\n    }\n  }\n}\n"]}