Convert presentation mode to ES6 syntax
This commit is contained in:
Tim van der Meij
parent
3554a93c2b
commit
ccdc7ba3c8
@ -15,10 +15,19 @@
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import { normalizeWheelEventDelta } from './ui_utils';
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import { normalizeWheelEventDelta } from './ui_utils';
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var DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS = 1500; // in ms
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const DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS = 1500; // in ms
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var DELAY_BEFORE_HIDING_CONTROLS = 3000; // in ms
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const DELAY_BEFORE_HIDING_CONTROLS = 3000; // in ms
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var ACTIVE_SELECTOR = 'pdfPresentationMode';
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const ACTIVE_SELECTOR = 'pdfPresentationMode';
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var CONTROLS_SELECTOR = 'pdfPresentationModeControls';
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const CONTROLS_SELECTOR = 'pdfPresentationModeControls';
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const MOUSE_SCROLL_COOLDOWN_TIME = 50; // in ms
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const PAGE_SWITCH_THRESHOLD = 0.1;
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// Number of CSS pixels for a movement to count as a swipe.
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const SWIPE_MIN_DISTANCE_THRESHOLD = 50;
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// Swipe angle deviation from the x or y axis before it is not
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// considered a swipe in that direction any more.
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const SWIPE_ANGLE_THRESHOLD = Math.PI / 6;
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/**
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/**
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* @typedef {Object} PDFPresentationModeOptions
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* @typedef {Object} PDFPresentationModeOptions
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@ -30,15 +39,11 @@ var CONTROLS_SELECTOR = 'pdfPresentationModeControls';
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* to the context menu in Presentation Mode.
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* to the context menu in Presentation Mode.
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*/
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*/
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/**
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class PDFPresentationMode {
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* @class
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*/
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var PDFPresentationMode = (function PDFPresentationModeClosure() {
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/**
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/**
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* @constructs PDFPresentationMode
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* @param {PDFPresentationModeOptions} options
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* @param {PDFPresentationModeOptions} options
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*/
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*/
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function PDFPresentationMode(options) {
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constructor(options) {
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this.container = options.container;
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this.container = options.container;
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this.viewer = options.viewer || options.container.firstElementChild;
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this.viewer = options.viewer || options.container.firstElementChild;
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this.pdfViewer = options.pdfViewer;
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this.pdfViewer = options.pdfViewer;
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@ -53,457 +58,432 @@ var PDFPresentationMode = (function PDFPresentationModeClosure() {
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this.touchSwipeState = null;
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this.touchSwipeState = null;
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if (contextMenuItems) {
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if (contextMenuItems) {
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contextMenuItems.contextFirstPage.addEventListener('click',
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contextMenuItems.contextFirstPage.addEventListener('click', () => {
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function PDFPresentationMode_contextFirstPageClick(e) {
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this.contextMenuOpen = false;
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this.contextMenuOpen = false;
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this.eventBus.dispatch('firstpage');
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this.eventBus.dispatch('firstpage');
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}.bind(this));
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});
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contextMenuItems.contextLastPage.addEventListener('click',
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contextMenuItems.contextLastPage.addEventListener('click', () => {
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function PDFPresentationMode_contextLastPageClick(e) {
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this.contextMenuOpen = false;
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this.contextMenuOpen = false;
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this.eventBus.dispatch('lastpage');
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this.eventBus.dispatch('lastpage');
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}.bind(this));
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});
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contextMenuItems.contextPageRotateCw.addEventListener('click',
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contextMenuItems.contextPageRotateCw.addEventListener('click', () => {
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function PDFPresentationMode_contextPageRotateCwClick(e) {
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this.contextMenuOpen = false;
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this.contextMenuOpen = false;
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this.eventBus.dispatch('rotatecw');
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this.eventBus.dispatch('rotatecw');
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}.bind(this));
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});
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contextMenuItems.contextPageRotateCcw.addEventListener('click',
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contextMenuItems.contextPageRotateCcw.addEventListener('click', () => {
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function PDFPresentationMode_contextPageRotateCcwClick(e) {
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this.contextMenuOpen = false;
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this.contextMenuOpen = false;
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this.eventBus.dispatch('rotateccw');
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this.eventBus.dispatch('rotateccw');
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}.bind(this));
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});
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}
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}
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}
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}
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PDFPresentationMode.prototype = {
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/**
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/**
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* Request the browser to enter fullscreen mode.
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* Request the browser to enter fullscreen mode.
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* @returns {boolean} Indicating if the request was successful.
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* @returns {boolean} Indicating if the request was successful.
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*/
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*/
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request() {
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request: function PDFPresentationMode_request() {
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if (this.switchInProgress || this.active || !this.viewer.hasChildNodes()) {
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if (this.switchInProgress || this.active ||
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return false;
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!this.viewer.hasChildNodes()) {
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}
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return false;
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this._addFullscreenChangeListeners();
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}
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this._setSwitchInProgress();
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this._addFullscreenChangeListeners();
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this._notifyStateChange();
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this._setSwitchInProgress();
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this._notifyStateChange();
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if (this.container.requestFullscreen) {
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if (this.container.requestFullscreen) {
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this.container.requestFullscreen();
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this.container.requestFullscreen();
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} else if (this.container.mozRequestFullScreen) {
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} else if (this.container.mozRequestFullScreen) {
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this.container.mozRequestFullScreen();
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this.container.mozRequestFullScreen();
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} else if (this.container.webkitRequestFullscreen) {
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} else if (this.container.webkitRequestFullscreen) {
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this.container.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
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this.container.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
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} else if (this.container.msRequestFullscreen) {
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} else if (this.container.msRequestFullscreen) {
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this.container.msRequestFullscreen();
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this.container.msRequestFullscreen();
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} else {
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} else {
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return false;
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return false;
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}
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}
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this.args = {
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this.args = {
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page: this.pdfViewer.currentPageNumber,
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page: this.pdfViewer.currentPageNumber,
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previousScale: this.pdfViewer.currentScaleValue,
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previousScale: this.pdfViewer.currentScaleValue,
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};
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};
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return true;
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return true;
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},
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}
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/**
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/**
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* @private
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* @private
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*/
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*/
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_mouseWheel: function PDFPresentationMode_mouseWheel(evt) {
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_mouseWheel(evt) {
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if (!this.active) {
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if (!this.active) {
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return;
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return;
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}
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}
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evt.preventDefault();
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evt.preventDefault();
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var delta = normalizeWheelEventDelta(evt);
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var delta = normalizeWheelEventDelta(evt);
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var currentTime = (new Date()).getTime();
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var storedTime = this.mouseScrollTimeStamp;
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var MOUSE_SCROLL_COOLDOWN_TIME = 50;
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// If we've already switched page, avoid accidentally switching again.
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var PAGE_SWITCH_THRESHOLD = 0.1;
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if (currentTime > storedTime &&
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currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME) {
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var currentTime = (new Date()).getTime();
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return;
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var storedTime = this.mouseScrollTimeStamp;
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}
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// If the scroll direction changed, reset the accumulated scroll delta.
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// If we've already switched page, avoid accidentally switching again.
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if ((this.mouseScrollDelta > 0 && delta < 0) ||
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if (currentTime > storedTime &&
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(this.mouseScrollDelta < 0 && delta > 0)) {
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currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME) {
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return;
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}
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// If the scroll direction changed, reset the accumulated scroll delta.
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if ((this.mouseScrollDelta > 0 && delta < 0) ||
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(this.mouseScrollDelta < 0 && delta > 0)) {
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this._resetMouseScrollState();
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}
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this.mouseScrollDelta += delta;
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if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) {
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var totalDelta = this.mouseScrollDelta;
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this._resetMouseScrollState();
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var success = totalDelta > 0 ? this._goToPreviousPage()
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: this._goToNextPage();
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if (success) {
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this.mouseScrollTimeStamp = currentTime;
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}
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}
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},
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get isFullscreen() {
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return !!(document.fullscreenElement ||
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document.mozFullScreen ||
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document.webkitIsFullScreen ||
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document.msFullscreenElement);
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},
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/**
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* @private
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*/
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_goToPreviousPage: function PDFPresentationMode_goToPreviousPage() {
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var page = this.pdfViewer.currentPageNumber;
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// If we're at the first page, we don't need to do anything.
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if (page <= 1) {
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return false;
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}
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this.pdfViewer.currentPageNumber = (page - 1);
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return true;
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},
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/**
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* @private
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*/
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_goToNextPage: function PDFPresentationMode_goToNextPage() {
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var page = this.pdfViewer.currentPageNumber;
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// If we're at the last page, we don't need to do anything.
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if (page >= this.pdfViewer.pagesCount) {
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return false;
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}
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this.pdfViewer.currentPageNumber = (page + 1);
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return true;
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},
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/**
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* @private
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*/
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_notifyStateChange: function PDFPresentationMode_notifyStateChange() {
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this.eventBus.dispatch('presentationmodechanged', {
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source: this,
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active: this.active,
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switchInProgress: !!this.switchInProgress
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});
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},
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/**
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* Used to initialize a timeout when requesting Presentation Mode,
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* i.e. when the browser is requested to enter fullscreen mode.
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* This timeout is used to prevent the current page from being scrolled
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* partially, or completely, out of view when entering Presentation Mode.
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* NOTE: This issue seems limited to certain zoom levels (e.g. page-width).
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* @private
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*/
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_setSwitchInProgress: function PDFPresentationMode_setSwitchInProgress() {
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if (this.switchInProgress) {
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clearTimeout(this.switchInProgress);
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}
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this.switchInProgress = setTimeout(function switchInProgressTimeout() {
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this._removeFullscreenChangeListeners();
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delete this.switchInProgress;
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this._notifyStateChange();
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}.bind(this), DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS);
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},
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/**
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* @private
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*/
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_resetSwitchInProgress:
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function PDFPresentationMode_resetSwitchInProgress() {
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if (this.switchInProgress) {
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clearTimeout(this.switchInProgress);
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delete this.switchInProgress;
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}
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},
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/**
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* @private
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*/
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_enter: function PDFPresentationMode_enter() {
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this.active = true;
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this._resetSwitchInProgress();
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this._notifyStateChange();
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this.container.classList.add(ACTIVE_SELECTOR);
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// Ensure that the correct page is scrolled into view when entering
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// Presentation Mode, by waiting until fullscreen mode in enabled.
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setTimeout(function enterPresentationModeTimeout() {
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this.pdfViewer.currentPageNumber = this.args.page;
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this.pdfViewer.currentScaleValue = 'page-fit';
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}.bind(this), 0);
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this._addWindowListeners();
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this._showControls();
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this.contextMenuOpen = false;
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this.container.setAttribute('contextmenu', 'viewerContextMenu');
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// Text selection is disabled in Presentation Mode, thus it's not possible
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// for the user to deselect text that is selected (e.g. with "Select all")
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// when entering Presentation Mode, hence we remove any active selection.
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window.getSelection().removeAllRanges();
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},
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/**
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* @private
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*/
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_exit: function PDFPresentationMode_exit() {
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var page = this.pdfViewer.currentPageNumber;
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this.container.classList.remove(ACTIVE_SELECTOR);
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// Ensure that the correct page is scrolled into view when exiting
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// Presentation Mode, by waiting until fullscreen mode is disabled.
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setTimeout(function exitPresentationModeTimeout() {
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this.active = false;
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this._removeFullscreenChangeListeners();
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this._notifyStateChange();
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this.pdfViewer.currentScaleValue = this.args.previousScale;
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this.pdfViewer.currentPageNumber = page;
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this.args = null;
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}.bind(this), 0);
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this._removeWindowListeners();
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this._hideControls();
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this._resetMouseScrollState();
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this._resetMouseScrollState();
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this.container.removeAttribute('contextmenu');
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}
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this.mouseScrollDelta += delta;
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if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) {
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var totalDelta = this.mouseScrollDelta;
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this._resetMouseScrollState();
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var success = totalDelta > 0 ? this._goToPreviousPage()
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: this._goToNextPage();
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if (success) {
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this.mouseScrollTimeStamp = currentTime;
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}
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}
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}
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get isFullscreen() {
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return !!(document.fullscreenElement || document.mozFullScreen ||
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document.webkitIsFullScreen || document.msFullscreenElement);
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}
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/**
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* @private
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*/
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_goToPreviousPage() {
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var page = this.pdfViewer.currentPageNumber;
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// If we're at the first page, we don't need to do anything.
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if (page <= 1) {
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return false;
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}
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this.pdfViewer.currentPageNumber = (page - 1);
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return true;
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}
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/**
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* @private
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*/
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_goToNextPage() {
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var page = this.pdfViewer.currentPageNumber;
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// If we're at the last page, we don't need to do anything.
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if (page >= this.pdfViewer.pagesCount) {
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return false;
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}
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this.pdfViewer.currentPageNumber = (page + 1);
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return true;
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}
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/**
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* @private
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*/
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_notifyStateChange() {
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this.eventBus.dispatch('presentationmodechanged', {
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source: this,
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active: this.active,
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switchInProgress: !!this.switchInProgress,
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});
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}
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/**
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* Used to initialize a timeout when requesting Presentation Mode,
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* i.e. when the browser is requested to enter fullscreen mode.
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* This timeout is used to prevent the current page from being scrolled
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* partially, or completely, out of view when entering Presentation Mode.
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* NOTE: This issue seems limited to certain zoom levels (e.g. page-width).
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*
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* @private
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*/
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_setSwitchInProgress() {
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if (this.switchInProgress) {
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clearTimeout(this.switchInProgress);
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}
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this.switchInProgress = setTimeout(() => {
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this._removeFullscreenChangeListeners();
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delete this.switchInProgress;
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this._notifyStateChange();
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}, DELAY_BEFORE_RESETTING_SWITCH_IN_PROGRESS);
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}
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/**
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* @private
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*/
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_resetSwitchInProgress() {
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if (this.switchInProgress) {
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clearTimeout(this.switchInProgress);
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delete this.switchInProgress;
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}
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}
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/**
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* @private
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*/
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_enter() {
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this.active = true;
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this._resetSwitchInProgress();
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this._notifyStateChange();
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this.container.classList.add(ACTIVE_SELECTOR);
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// Ensure that the correct page is scrolled into view when entering
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// Presentation Mode, by waiting until fullscreen mode in enabled.
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setTimeout(() => {
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||||||
|
this.pdfViewer.currentPageNumber = this.args.page;
|
||||||
|
this.pdfViewer.currentScaleValue = 'page-fit';
|
||||||
|
}, 0);
|
||||||
|
|
||||||
|
this._addWindowListeners();
|
||||||
|
this._showControls();
|
||||||
|
this.contextMenuOpen = false;
|
||||||
|
this.container.setAttribute('contextmenu', 'viewerContextMenu');
|
||||||
|
|
||||||
|
// Text selection is disabled in Presentation Mode, thus it's not possible
|
||||||
|
// for the user to deselect text that is selected (e.g. with "Select all")
|
||||||
|
// when entering Presentation Mode, hence we remove any active selection.
|
||||||
|
window.getSelection().removeAllRanges();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @private
|
||||||
|
*/
|
||||||
|
_exit() {
|
||||||
|
var page = this.pdfViewer.currentPageNumber;
|
||||||
|
this.container.classList.remove(ACTIVE_SELECTOR);
|
||||||
|
|
||||||
|
// Ensure that the correct page is scrolled into view when exiting
|
||||||
|
// Presentation Mode, by waiting until fullscreen mode is disabled.
|
||||||
|
setTimeout(() => {
|
||||||
|
this.active = false;
|
||||||
|
this._removeFullscreenChangeListeners();
|
||||||
|
this._notifyStateChange();
|
||||||
|
|
||||||
|
this.pdfViewer.currentScaleValue = this.args.previousScale;
|
||||||
|
this.pdfViewer.currentPageNumber = page;
|
||||||
|
this.args = null;
|
||||||
|
}, 0);
|
||||||
|
|
||||||
|
this._removeWindowListeners();
|
||||||
|
this._hideControls();
|
||||||
|
this._resetMouseScrollState();
|
||||||
|
this.container.removeAttribute('contextmenu');
|
||||||
|
this.contextMenuOpen = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @private
|
||||||
|
*/
|
||||||
|
_mouseDown(evt) {
|
||||||
|
if (this.contextMenuOpen) {
|
||||||
this.contextMenuOpen = false;
|
this.contextMenuOpen = false;
|
||||||
},
|
evt.preventDefault();
|
||||||
|
return;
|
||||||
/**
|
}
|
||||||
* @private
|
if (evt.button === 0) {
|
||||||
*/
|
// Enable clicking of links in presentation mode. Note: only links
|
||||||
_mouseDown: function PDFPresentationMode_mouseDown(evt) {
|
// pointing to destinations in the current PDF document work.
|
||||||
if (this.contextMenuOpen) {
|
var isInternalLink = (evt.target.href &&
|
||||||
this.contextMenuOpen = false;
|
evt.target.classList.contains('internalLink'));
|
||||||
|
if (!isInternalLink) {
|
||||||
|
// Unless an internal link was clicked, advance one page.
|
||||||
evt.preventDefault();
|
evt.preventDefault();
|
||||||
return;
|
this.pdfViewer.currentPageNumber += (evt.shiftKey ? -1 : 1);
|
||||||
}
|
}
|
||||||
if (evt.button === 0) {
|
}
|
||||||
// Enable clicking of links in presentation mode. Please note:
|
}
|
||||||
// Only links pointing to destinations in the current PDF document work.
|
|
||||||
var isInternalLink = (evt.target.href &&
|
|
||||||
evt.target.classList.contains('internalLink'));
|
|
||||||
if (!isInternalLink) {
|
|
||||||
// Unless an internal link was clicked, advance one page.
|
|
||||||
evt.preventDefault();
|
|
||||||
this.pdfViewer.currentPageNumber += (evt.shiftKey ? -1 : 1);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @private
|
* @private
|
||||||
*/
|
*/
|
||||||
_contextMenu: function PDFPresentationMode_contextMenu() {
|
_contextMenu() {
|
||||||
this.contextMenuOpen = true;
|
this.contextMenuOpen = true;
|
||||||
},
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @private
|
* @private
|
||||||
*/
|
*/
|
||||||
_showControls: function PDFPresentationMode_showControls() {
|
_showControls() {
|
||||||
if (this.controlsTimeout) {
|
if (this.controlsTimeout) {
|
||||||
clearTimeout(this.controlsTimeout);
|
|
||||||
} else {
|
|
||||||
this.container.classList.add(CONTROLS_SELECTOR);
|
|
||||||
}
|
|
||||||
this.controlsTimeout = setTimeout(function showControlsTimeout() {
|
|
||||||
this.container.classList.remove(CONTROLS_SELECTOR);
|
|
||||||
delete this.controlsTimeout;
|
|
||||||
}.bind(this), DELAY_BEFORE_HIDING_CONTROLS);
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @private
|
|
||||||
*/
|
|
||||||
_hideControls: function PDFPresentationMode_hideControls() {
|
|
||||||
if (!this.controlsTimeout) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
clearTimeout(this.controlsTimeout);
|
clearTimeout(this.controlsTimeout);
|
||||||
|
} else {
|
||||||
|
this.container.classList.add(CONTROLS_SELECTOR);
|
||||||
|
}
|
||||||
|
this.controlsTimeout = setTimeout(() => {
|
||||||
this.container.classList.remove(CONTROLS_SELECTOR);
|
this.container.classList.remove(CONTROLS_SELECTOR);
|
||||||
delete this.controlsTimeout;
|
delete this.controlsTimeout;
|
||||||
},
|
}, DELAY_BEFORE_HIDING_CONTROLS);
|
||||||
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Resets the properties used for tracking mouse scrolling events.
|
* @private
|
||||||
* @private
|
*/
|
||||||
*/
|
_hideControls() {
|
||||||
_resetMouseScrollState:
|
if (!this.controlsTimeout) {
|
||||||
function PDFPresentationMode_resetMouseScrollState() {
|
return;
|
||||||
this.mouseScrollTimeStamp = 0;
|
|
||||||
this.mouseScrollDelta = 0;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @private
|
|
||||||
*/
|
|
||||||
_touchSwipe: function PDFPresentationMode_touchSwipe(evt) {
|
|
||||||
if (!this.active) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Must move at least these many CSS pixels for it to count as a swipe
|
|
||||||
var SWIPE_MIN_DISTANCE_THRESHOLD = 50;
|
|
||||||
// The swipe angle is allowed to deviate from the x or y axis by this much
|
|
||||||
// before it is not considered a swipe in that direction any more.
|
|
||||||
var SWIPE_ANGLE_THRESHOLD = Math.PI / 6;
|
|
||||||
|
|
||||||
if (evt.touches.length > 1) {
|
|
||||||
// Multiple touch points detected, cancel the swipe.
|
|
||||||
this.touchSwipeState = null;
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
switch (evt.type) {
|
|
||||||
case 'touchstart':
|
|
||||||
this.touchSwipeState = {
|
|
||||||
startX: evt.touches[0].pageX,
|
|
||||||
startY: evt.touches[0].pageY,
|
|
||||||
endX: evt.touches[0].pageX,
|
|
||||||
endY: evt.touches[0].pageY
|
|
||||||
};
|
|
||||||
break;
|
|
||||||
case 'touchmove':
|
|
||||||
if (this.touchSwipeState === null) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
this.touchSwipeState.endX = evt.touches[0].pageX;
|
|
||||||
this.touchSwipeState.endY = evt.touches[0].pageY;
|
|
||||||
// Do a preventDefault to avoid the swipe from triggering browser
|
|
||||||
// gestures (Chrome in particular has some sort of swipe gesture in
|
|
||||||
// fullscreen mode).
|
|
||||||
evt.preventDefault();
|
|
||||||
break;
|
|
||||||
case 'touchend':
|
|
||||||
if (this.touchSwipeState === null) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
var delta = 0;
|
|
||||||
var dx = this.touchSwipeState.endX - this.touchSwipeState.startX;
|
|
||||||
var dy = this.touchSwipeState.endY - this.touchSwipeState.startY;
|
|
||||||
var absAngle = Math.abs(Math.atan2(dy, dx));
|
|
||||||
if (Math.abs(dx) > SWIPE_MIN_DISTANCE_THRESHOLD &&
|
|
||||||
(absAngle <= SWIPE_ANGLE_THRESHOLD ||
|
|
||||||
absAngle >= (Math.PI - SWIPE_ANGLE_THRESHOLD))) {
|
|
||||||
// horizontal swipe
|
|
||||||
delta = dx;
|
|
||||||
} else if (Math.abs(dy) > SWIPE_MIN_DISTANCE_THRESHOLD &&
|
|
||||||
Math.abs(absAngle - (Math.PI / 2)) <= SWIPE_ANGLE_THRESHOLD) {
|
|
||||||
// vertical swipe
|
|
||||||
delta = dy;
|
|
||||||
}
|
|
||||||
if (delta > 0) {
|
|
||||||
this._goToPreviousPage();
|
|
||||||
} else if (delta < 0) {
|
|
||||||
this._goToNextPage();
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @private
|
|
||||||
*/
|
|
||||||
_addWindowListeners: function PDFPresentationMode_addWindowListeners() {
|
|
||||||
this.showControlsBind = this._showControls.bind(this);
|
|
||||||
this.mouseDownBind = this._mouseDown.bind(this);
|
|
||||||
this.mouseWheelBind = this._mouseWheel.bind(this);
|
|
||||||
this.resetMouseScrollStateBind = this._resetMouseScrollState.bind(this);
|
|
||||||
this.contextMenuBind = this._contextMenu.bind(this);
|
|
||||||
this.touchSwipeBind = this._touchSwipe.bind(this);
|
|
||||||
|
|
||||||
window.addEventListener('mousemove', this.showControlsBind);
|
|
||||||
window.addEventListener('mousedown', this.mouseDownBind);
|
|
||||||
window.addEventListener('wheel', this.mouseWheelBind);
|
|
||||||
window.addEventListener('keydown', this.resetMouseScrollStateBind);
|
|
||||||
window.addEventListener('contextmenu', this.contextMenuBind);
|
|
||||||
window.addEventListener('touchstart', this.touchSwipeBind);
|
|
||||||
window.addEventListener('touchmove', this.touchSwipeBind);
|
|
||||||
window.addEventListener('touchend', this.touchSwipeBind);
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @private
|
|
||||||
*/
|
|
||||||
_removeWindowListeners:
|
|
||||||
function PDFPresentationMode_removeWindowListeners() {
|
|
||||||
window.removeEventListener('mousemove', this.showControlsBind);
|
|
||||||
window.removeEventListener('mousedown', this.mouseDownBind);
|
|
||||||
window.removeEventListener('wheel', this.mouseWheelBind);
|
|
||||||
window.removeEventListener('keydown', this.resetMouseScrollStateBind);
|
|
||||||
window.removeEventListener('contextmenu', this.contextMenuBind);
|
|
||||||
window.removeEventListener('touchstart', this.touchSwipeBind);
|
|
||||||
window.removeEventListener('touchmove', this.touchSwipeBind);
|
|
||||||
window.removeEventListener('touchend', this.touchSwipeBind);
|
|
||||||
|
|
||||||
delete this.showControlsBind;
|
|
||||||
delete this.mouseDownBind;
|
|
||||||
delete this.mouseWheelBind;
|
|
||||||
delete this.resetMouseScrollStateBind;
|
|
||||||
delete this.contextMenuBind;
|
|
||||||
delete this.touchSwipeBind;
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @private
|
|
||||||
*/
|
|
||||||
_fullscreenChange: function PDFPresentationMode_fullscreenChange() {
|
|
||||||
if (this.isFullscreen) {
|
|
||||||
this._enter();
|
|
||||||
} else {
|
|
||||||
this._exit();
|
|
||||||
}
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @private
|
|
||||||
*/
|
|
||||||
_addFullscreenChangeListeners:
|
|
||||||
function PDFPresentationMode_addFullscreenChangeListeners() {
|
|
||||||
this.fullscreenChangeBind = this._fullscreenChange.bind(this);
|
|
||||||
|
|
||||||
window.addEventListener('fullscreenchange', this.fullscreenChangeBind);
|
|
||||||
window.addEventListener('mozfullscreenchange', this.fullscreenChangeBind);
|
|
||||||
if (typeof PDFJSDev === 'undefined' ||
|
|
||||||
!PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
||||||
window.addEventListener('webkitfullscreenchange',
|
|
||||||
this.fullscreenChangeBind);
|
|
||||||
window.addEventListener('MSFullscreenChange',
|
|
||||||
this.fullscreenChangeBind);
|
|
||||||
}
|
|
||||||
},
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @private
|
|
||||||
*/
|
|
||||||
_removeFullscreenChangeListeners:
|
|
||||||
function PDFPresentationMode_removeFullscreenChangeListeners() {
|
|
||||||
window.removeEventListener('fullscreenchange', this.fullscreenChangeBind);
|
|
||||||
window.removeEventListener('mozfullscreenchange',
|
|
||||||
this.fullscreenChangeBind);
|
|
||||||
if (typeof PDFJSDev === 'undefined' ||
|
|
||||||
!PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
|
||||||
window.removeEventListener('webkitfullscreenchange',
|
|
||||||
this.fullscreenChangeBind);
|
|
||||||
window.removeEventListener('MSFullscreenChange',
|
|
||||||
this.fullscreenChangeBind);
|
|
||||||
}
|
|
||||||
|
|
||||||
delete this.fullscreenChangeBind;
|
|
||||||
}
|
}
|
||||||
};
|
clearTimeout(this.controlsTimeout);
|
||||||
|
this.container.classList.remove(CONTROLS_SELECTOR);
|
||||||
|
delete this.controlsTimeout;
|
||||||
|
}
|
||||||
|
|
||||||
return PDFPresentationMode;
|
/**
|
||||||
})();
|
* Resets the properties used for tracking mouse scrolling events.
|
||||||
|
*
|
||||||
|
* @private
|
||||||
|
*/
|
||||||
|
_resetMouseScrollState() {
|
||||||
|
this.mouseScrollTimeStamp = 0;
|
||||||
|
this.mouseScrollDelta = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @private
|
||||||
|
*/
|
||||||
|
_touchSwipe(evt) {
|
||||||
|
if (!this.active) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
if (evt.touches.length > 1) {
|
||||||
|
// Multiple touch points detected; cancel the swipe.
|
||||||
|
this.touchSwipeState = null;
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
switch (evt.type) {
|
||||||
|
case 'touchstart':
|
||||||
|
this.touchSwipeState = {
|
||||||
|
startX: evt.touches[0].pageX,
|
||||||
|
startY: evt.touches[0].pageY,
|
||||||
|
endX: evt.touches[0].pageX,
|
||||||
|
endY: evt.touches[0].pageY,
|
||||||
|
};
|
||||||
|
break;
|
||||||
|
case 'touchmove':
|
||||||
|
if (this.touchSwipeState === null) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
this.touchSwipeState.endX = evt.touches[0].pageX;
|
||||||
|
this.touchSwipeState.endY = evt.touches[0].pageY;
|
||||||
|
// Avoid the swipe from triggering browser gestures (Chrome in
|
||||||
|
// particular has some sort of swipe gesture in fullscreen mode).
|
||||||
|
evt.preventDefault();
|
||||||
|
break;
|
||||||
|
case 'touchend':
|
||||||
|
if (this.touchSwipeState === null) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
var delta = 0;
|
||||||
|
var dx = this.touchSwipeState.endX - this.touchSwipeState.startX;
|
||||||
|
var dy = this.touchSwipeState.endY - this.touchSwipeState.startY;
|
||||||
|
var absAngle = Math.abs(Math.atan2(dy, dx));
|
||||||
|
if (Math.abs(dx) > SWIPE_MIN_DISTANCE_THRESHOLD &&
|
||||||
|
(absAngle <= SWIPE_ANGLE_THRESHOLD ||
|
||||||
|
absAngle >= (Math.PI - SWIPE_ANGLE_THRESHOLD))) {
|
||||||
|
// Horizontal swipe.
|
||||||
|
delta = dx;
|
||||||
|
} else if (Math.abs(dy) > SWIPE_MIN_DISTANCE_THRESHOLD &&
|
||||||
|
Math.abs(absAngle - (Math.PI / 2)) <= SWIPE_ANGLE_THRESHOLD) {
|
||||||
|
// Vertical swipe.
|
||||||
|
delta = dy;
|
||||||
|
}
|
||||||
|
if (delta > 0) {
|
||||||
|
this._goToPreviousPage();
|
||||||
|
} else if (delta < 0) {
|
||||||
|
this._goToNextPage();
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @private
|
||||||
|
*/
|
||||||
|
_addWindowListeners() {
|
||||||
|
this.showControlsBind = this._showControls.bind(this);
|
||||||
|
this.mouseDownBind = this._mouseDown.bind(this);
|
||||||
|
this.mouseWheelBind = this._mouseWheel.bind(this);
|
||||||
|
this.resetMouseScrollStateBind = this._resetMouseScrollState.bind(this);
|
||||||
|
this.contextMenuBind = this._contextMenu.bind(this);
|
||||||
|
this.touchSwipeBind = this._touchSwipe.bind(this);
|
||||||
|
|
||||||
|
window.addEventListener('mousemove', this.showControlsBind);
|
||||||
|
window.addEventListener('mousedown', this.mouseDownBind);
|
||||||
|
window.addEventListener('wheel', this.mouseWheelBind);
|
||||||
|
window.addEventListener('keydown', this.resetMouseScrollStateBind);
|
||||||
|
window.addEventListener('contextmenu', this.contextMenuBind);
|
||||||
|
window.addEventListener('touchstart', this.touchSwipeBind);
|
||||||
|
window.addEventListener('touchmove', this.touchSwipeBind);
|
||||||
|
window.addEventListener('touchend', this.touchSwipeBind);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @private
|
||||||
|
*/
|
||||||
|
_removeWindowListeners() {
|
||||||
|
window.removeEventListener('mousemove', this.showControlsBind);
|
||||||
|
window.removeEventListener('mousedown', this.mouseDownBind);
|
||||||
|
window.removeEventListener('wheel', this.mouseWheelBind);
|
||||||
|
window.removeEventListener('keydown', this.resetMouseScrollStateBind);
|
||||||
|
window.removeEventListener('contextmenu', this.contextMenuBind);
|
||||||
|
window.removeEventListener('touchstart', this.touchSwipeBind);
|
||||||
|
window.removeEventListener('touchmove', this.touchSwipeBind);
|
||||||
|
window.removeEventListener('touchend', this.touchSwipeBind);
|
||||||
|
|
||||||
|
delete this.showControlsBind;
|
||||||
|
delete this.mouseDownBind;
|
||||||
|
delete this.mouseWheelBind;
|
||||||
|
delete this.resetMouseScrollStateBind;
|
||||||
|
delete this.contextMenuBind;
|
||||||
|
delete this.touchSwipeBind;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @private
|
||||||
|
*/
|
||||||
|
_fullscreenChange() {
|
||||||
|
if (this.isFullscreen) {
|
||||||
|
this._enter();
|
||||||
|
} else {
|
||||||
|
this._exit();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @private
|
||||||
|
*/
|
||||||
|
_addFullscreenChangeListeners() {
|
||||||
|
this.fullscreenChangeBind = this._fullscreenChange.bind(this);
|
||||||
|
|
||||||
|
window.addEventListener('fullscreenchange', this.fullscreenChangeBind);
|
||||||
|
window.addEventListener('mozfullscreenchange', this.fullscreenChangeBind);
|
||||||
|
if (typeof PDFJSDev === 'undefined' ||
|
||||||
|
!PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
||||||
|
window.addEventListener('webkitfullscreenchange',
|
||||||
|
this.fullscreenChangeBind);
|
||||||
|
window.addEventListener('MSFullscreenChange',
|
||||||
|
this.fullscreenChangeBind);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @private
|
||||||
|
*/
|
||||||
|
_removeFullscreenChangeListeners() {
|
||||||
|
window.removeEventListener('fullscreenchange', this.fullscreenChangeBind);
|
||||||
|
window.removeEventListener('mozfullscreenchange',
|
||||||
|
this.fullscreenChangeBind);
|
||||||
|
if (typeof PDFJSDev === 'undefined' ||
|
||||||
|
!PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
|
||||||
|
window.removeEventListener('webkitfullscreenchange',
|
||||||
|
this.fullscreenChangeBind);
|
||||||
|
window.removeEventListener('MSFullscreenChange',
|
||||||
|
this.fullscreenChangeBind);
|
||||||
|
}
|
||||||
|
|
||||||
|
delete this.fullscreenChangeBind;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
export {
|
export {
|
||||||
PDFPresentationMode,
|
PDFPresentationMode,
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user