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1x | /* Copyright 2017 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.waitOnEventOrTimeout = exports.WaitOnType = exports.localized = exports.animationStarted = exports.normalizeWheelEventDelta = exports.binarySearchFirstItem = exports.watchScroll = exports.scrollIntoView = exports.getOutputScale = exports.approximateFraction = exports.roundToDivide = exports.getVisibleElements = exports.parseQueryString = exports.noContextMenuHandler = exports.getPDFFileNameFromURL = exports.ProgressBar = exports.EventBus = exports.NullL10n = exports.mozL10n = exports.RendererType = exports.PresentationModeState = exports.cloneObj = exports.isValidRotation = exports.VERTICAL_PADDING = exports.SCROLLBAR_PADDING = exports.MAX_AUTO_SCALE = exports.UNKNOWN_SCALE = exports.MAX_SCALE = exports.MIN_SCALE = exports.DEFAULT_SCALE = exports.DEFAULT_SCALE_VALUE = exports.CSS_UNITS = undefined;
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { Eif (protoProps) defineProperties(Constructor.prototype, protoProps); Iif (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
var _pdf = require('../pdf');
function _classCallCheck(instance, Constructor) { Iif (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var CSS_UNITS = 96.0 / 72.0;
var DEFAULT_SCALE_VALUE = 'auto';
var DEFAULT_SCALE = 1.0;
var MIN_SCALE = 0.10;
var MAX_SCALE = 10.0;
var UNKNOWN_SCALE = 0;
var MAX_AUTO_SCALE = 1.25;
var SCROLLBAR_PADDING = 40;
var VERTICAL_PADDING = 5;
var PresentationModeState = {
UNKNOWN: 0,
NORMAL: 1,
CHANGING: 2,
FULLSCREEN: 3
};
var RendererType = {
CANVAS: 'canvas',
SVG: 'svg'
};
function formatL10nValue(text, args) {
if (!args) {
return text;
}
return text.replace(/\{\{\s*(\w+)\s*\}\}/g, function (all, name) {
return name in args ? args[name] : '{{' + name + '}}';
});
}
var NullL10n = {
getDirection: function getDirection() {
return Promise.resolve('ltr');
},
get: function get(property, args, fallback) {
return Promise.resolve(formatL10nValue(fallback, args));
},
translate: function translate(element) {
return Promise.resolve();
}
};
_pdf.PDFJS.disableFullscreen = _pdf.PDFJS.disableFullscreen === undefined ? false : _pdf.PDFJS.disableFullscreen;
_pdf.PDFJS.useOnlyCssZoom = _pdf.PDFJS.useOnlyCssZoom === undefined ? false : _pdf.PDFJS.useOnlyCssZoom;
_pdf.PDFJS.maxCanvasPixels = _pdf.PDFJS.maxCanvasPixels === undefined ? 16777216 : _pdf.PDFJS.maxCanvasPixels;
_pdf.PDFJS.disableHistory = _pdf.PDFJS.disableHistory === undefined ? false : _pdf.PDFJS.disableHistory;
_pdf.PDFJS.disableTextLayer = _pdf.PDFJS.disableTextLayer === undefined ? false : _pdf.PDFJS.disableTextLayer;
{
_pdf.PDFJS.locale = _pdf.PDFJS.locale === undefined && typeof navigator !== 'undefined' ? navigator.language : _pdf.PDFJS.locale;
}
function getOutputScale(ctx) {
var devicePixelRatio = window.devicePixelRatio || 1;
var backingStoreRatio = ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1;
var pixelRatio = devicePixelRatio / backingStoreRatio;
return {
sx: pixelRatio,
sy: pixelRatio,
scaled: pixelRatio !== 1
};
}
function scrollIntoView(element, spot) {
var skipOverflowHiddenElements = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
var parent = element.offsetParent;
if (!parent) {
console.error('offsetParent is not set -- cannot scroll');
return;
}
var offsetY = element.offsetTop + element.clientTop;
var offsetX = element.offsetLeft + element.clientLeft;
while (parent.clientHeight === parent.scrollHeight || skipOverflowHiddenElements && getComputedStyle(parent).overflow === 'hidden') {
if (parent.dataset._scaleY) {
offsetY /= parent.dataset._scaleY;
offsetX /= parent.dataset._scaleX;
}
offsetY += parent.offsetTop;
offsetX += parent.offsetLeft;
parent = parent.offsetParent;
if (!parent) {
return;
}
}
if (spot) {
if (spot.top !== undefined) {
offsetY += spot.top;
}
if (spot.left !== undefined) {
offsetX += spot.left;
parent.scrollLeft = offsetX;
}
}
parent.scrollTop = offsetY;
}
function watchScroll(viewAreaElement, callback) {
var debounceScroll = function debounceScroll(evt) {
if (rAF) {
return;
}
rAF = window.requestAnimationFrame(function viewAreaElementScrolled() {
rAF = null;
var currentY = viewAreaElement.scrollTop;
var lastY = state.lastY;
if (currentY !== lastY) {
state.down = currentY > lastY;
}
state.lastY = currentY;
callback(state);
});
};
var state = {
down: true,
lastY: viewAreaElement.scrollTop,
_eventHandler: debounceScroll
};
var rAF = null;
viewAreaElement.addEventListener('scroll', debounceScroll, true);
return state;
}
function parseQueryString(query) {
var parts = query.split('&');
var params = Object.create(null);
for (var i = 0, ii = parts.length; i < ii; ++i) {
var param = parts[i].split('=');
var key = param[0].toLowerCase();
var value = param.length > 1 ? param[1] : null;
params[decodeURIComponent(key)] = decodeURIComponent(value);
}
return params;
}
function binarySearchFirstItem(items, condition) {
var minIndex = 0;
var maxIndex = items.length - 1;
if (items.length === 0 || !condition(items[maxIndex])) {
return items.length;
}
if (condition(items[minIndex])) {
return minIndex;
}
while (minIndex < maxIndex) {
var currentIndex = minIndex + maxIndex >> 1;
var currentItem = items[currentIndex];
if (condition(currentItem)) {
maxIndex = currentIndex;
} else {
minIndex = currentIndex + 1;
}
}
return minIndex;
}
function approximateFraction(x) {
if (Math.floor(x) === x) {
return [x, 1];
}
var xinv = 1 / x;
var limit = 8;
if (xinv > limit) {
return [1, limit];
} else if (Math.floor(xinv) === xinv) {
return [1, xinv];
}
var x_ = x > 1 ? xinv : x;
var a = 0,
b = 1,
c = 1,
d = 1;
while (true) {
var p = a + c,
q = b + d;
if (q > limit) {
break;
}
if (x_ <= p / q) {
c = p;
d = q;
} else {
a = p;
b = q;
}
}
var result = void 0;
if (x_ - a / b < c / d - x_) {
result = x_ === x ? [a, b] : [b, a];
} else {
result = x_ === x ? [c, d] : [d, c];
}
return result;
}
function roundToDivide(x, div) {
var r = x % div;
return r === 0 ? x : Math.round(x - r + div);
}
function getVisibleElements(scrollEl, views) {
var sortByVisibility = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
var top = scrollEl.scrollTop,
bottom = top + scrollEl.clientHeight;
var left = scrollEl.scrollLeft,
right = left + scrollEl.clientWidth;
function isElementBottomBelowViewTop(view) {
var element = view.div;
var elementBottom = element.offsetTop + element.clientTop + element.clientHeight;
return elementBottom > top;
}
var visible = [],
view = void 0,
element = void 0;
var currentHeight = void 0,
viewHeight = void 0,
hiddenHeight = void 0,
percentHeight = void 0;
var currentWidth = void 0,
viewWidth = void 0;
var firstVisibleElementInd = views.length === 0 ? 0 : binarySearchFirstItem(views, isElementBottomBelowViewTop);
for (var i = firstVisibleElementInd, ii = views.length; i < ii; i++) {
view = views[i];
element = view.div;
currentHeight = element.offsetTop + element.clientTop;
viewHeight = element.clientHeight;
if (currentHeight > bottom) {
break;
}
currentWidth = element.offsetLeft + element.clientLeft;
viewWidth = element.clientWidth;
if (currentWidth + viewWidth < left || currentWidth > right) {
continue;
}
hiddenHeight = Math.max(0, top - currentHeight) + Math.max(0, currentHeight + viewHeight - bottom);
percentHeight = (viewHeight - hiddenHeight) * 100 / viewHeight | 0;
visible.push({
id: view.id,
x: currentWidth,
y: currentHeight,
view: view,
percent: percentHeight
});
}
var first = visible[0];
var last = visible[visible.length - 1];
if (sortByVisibility) {
visible.sort(function (a, b) {
var pc = a.percent - b.percent;
if (Math.abs(pc) > 0.001) {
return -pc;
}
return a.id - b.id;
});
}
return {
first: first,
last: last,
views: visible
};
}
function noContextMenuHandler(evt) {
evt.preventDefault();
}
function isDataSchema(url) {
var i = 0,
ii = url.length;
while (i < ii && url[i].trim() === '') {
i++;
}
return url.substr(i, 5).toLowerCase() === 'data:';
}
function getPDFFileNameFromURL(url) {
var defaultFilename = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'document.pdf';
if (isDataSchema(url)) {
console.warn('getPDFFileNameFromURL: ' + 'ignoring "data:" URL for performance reasons.');
return defaultFilename;
}
var reURI = /^(?:(?:[^:]+:)?\/\/[^\/]+)?([^?#]*)(\?[^#]*)?(#.*)?$/;
var reFilename = /[^\/?#=]+\.pdf\b(?!.*\.pdf\b)/i;
var splitURI = reURI.exec(url);
var suggestedFilename = reFilename.exec(splitURI[1]) || reFilename.exec(splitURI[2]) || reFilename.exec(splitURI[3]);
if (suggestedFilename) {
suggestedFilename = suggestedFilename[0];
if (suggestedFilename.indexOf('%') !== -1) {
try {
suggestedFilename = reFilename.exec(decodeURIComponent(suggestedFilename))[0];
} catch (ex) {}
}
}
return suggestedFilename || defaultFilename;
}
function normalizeWheelEventDelta(evt) {
var delta = Math.sqrt(evt.deltaX * evt.deltaX + evt.deltaY * evt.deltaY);
var angle = Math.atan2(evt.deltaY, evt.deltaX);
if (-0.25 * Math.PI < angle && angle < 0.75 * Math.PI) {
delta = -delta;
}
var MOUSE_DOM_DELTA_PIXEL_MODE = 0;
var MOUSE_DOM_DELTA_LINE_MODE = 1;
var MOUSE_PIXELS_PER_LINE = 30;
var MOUSE_LINES_PER_PAGE = 30;
if (evt.deltaMode === MOUSE_DOM_DELTA_PIXEL_MODE) {
delta /= MOUSE_PIXELS_PER_LINE * MOUSE_LINES_PER_PAGE;
} else if (evt.deltaMode === MOUSE_DOM_DELTA_LINE_MODE) {
delta /= MOUSE_LINES_PER_PAGE;
}
return delta;
}
function isValidRotation(angle) {
return Number.isInteger(angle) && angle % 90 === 0;
}
function cloneObj(obj) {
var result = Object.create(null);
for (var i in obj) {
if (Object.prototype.hasOwnProperty.call(obj, i)) {
result[i] = obj[i];
}
}
return result;
}
var WaitOnType = {
EVENT: 'event',
TIMEOUT: 'timeout'
};
function waitOnEventOrTimeout(_ref) {
var target = _ref.target,
name = _ref.name,
_ref$delay = _ref.delay,
delay = _ref$delay === undefined ? 0 : _ref$delay;
if ((typeof target === 'undefined' ? 'undefined' : _typeof(target)) !== 'object' || !(name && typeof name === 'string') || !(Number.isInteger(delay) && delay >= 0)) {
return Promise.reject(new Error('waitOnEventOrTimeout - invalid paramaters.'));
}
var capability = (0, _pdf.createPromiseCapability)();
function handler(type) {
if (target instanceof EventBus) {
target.off(name, eventHandler);
} else {
target.removeEventListener(name, eventHandler);
}
if (timeout) {
clearTimeout(timeout);
}
capability.resolve(type);
}
var eventHandler = handler.bind(null, WaitOnType.EVENT);
if (target instanceof EventBus) {
target.on(name, eventHandler);
} else {
target.addEventListener(name, eventHandler);
}
var timeoutHandler = handler.bind(null, WaitOnType.TIMEOUT);
var timeout = setTimeout(timeoutHandler, delay);
return capability.promise;
}
var animationStarted = new Promise(function (resolve) {
window.requestAnimationFrame(resolve);
});
var mozL10n = void 0;
var localized = Promise.resolve();
var EventBus = function () {
function EventBus() {
_classCallCheck(this, EventBus);
this._listeners = Object.create(null);
}
_createClass(EventBus, [{
key: 'on',
value: function on(eventName, listener) {
var eventListeners = this._listeners[eventName];
if (!eventListeners) {
eventListeners = [];
this._listeners[eventName] = eventListeners;
}
eventListeners.push(listener);
}
}, {
key: 'off',
value: function off(eventName, listener) {
var eventListeners = this._listeners[eventName];
var i = void 0;
if (!eventListeners || (i = eventListeners.indexOf(listener)) < 0) {
return;
}
eventListeners.splice(i, 1);
}
}, {
key: 'dispatch',
value: function dispatch(eventName) {
var eventListeners = this._listeners[eventName];
if (!eventListeners || eventListeners.length === 0) {
return;
}
var args = Array.prototype.slice.call(arguments, 1);
eventListeners.slice(0).forEach(function (listener) {
listener.apply(null, args);
});
}
}]);
return EventBus;
}();
function clamp(v, min, max) {
return Math.min(Math.max(v, min), max);
}
var ProgressBar = function () {
function ProgressBar(id) {
var _ref2 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
height = _ref2.height,
width = _ref2.width,
units = _ref2.units;
_classCallCheck(this, ProgressBar);
this.visible = true;
this.div = document.querySelector(id + ' .progress');
this.bar = this.div.parentNode;
this.height = height || 100;
this.width = width || 100;
this.units = units || '%';
this.div.style.height = this.height + this.units;
this.percent = 0;
}
_createClass(ProgressBar, [{
key: '_updateBar',
value: function _updateBar() {
if (this._indeterminate) {
this.div.classList.add('indeterminate');
this.div.style.width = this.width + this.units;
return;
}
this.div.classList.remove('indeterminate');
var progressSize = this.width * this._percent / 100;
this.div.style.width = progressSize + this.units;
}
}, {
key: 'setWidth',
value: function setWidth(viewer) {
if (!viewer) {
return;
}
var container = viewer.parentNode;
var scrollbarWidth = container.offsetWidth - viewer.offsetWidth;
if (scrollbarWidth > 0) {
this.bar.setAttribute('style', 'width: calc(100% - ' + scrollbarWidth + 'px);');
}
}
}, {
key: 'hide',
value: function hide() {
if (!this.visible) {
return;
}
this.visible = false;
this.bar.classList.add('hidden');
document.body.classList.remove('loadingInProgress');
}
}, {
key: 'show',
value: function show() {
if (this.visible) {
return;
}
this.visible = true;
document.body.classList.add('loadingInProgress');
this.bar.classList.remove('hidden');
}
}, {
key: 'percent',
get: function get() {
return this._percent;
},
set: function set(val) {
this._indeterminate = isNaN(val);
this._percent = clamp(val, 0, 100);
this._updateBar();
}
}]);
return ProgressBar;
}();
exports.CSS_UNITS = CSS_UNITS;
exports.DEFAULT_SCALE_VALUE = DEFAULT_SCALE_VALUE;
exports.DEFAULT_SCALE = DEFAULT_SCALE;
exports.MIN_SCALE = MIN_SCALE;
exports.MAX_SCALE = MAX_SCALE;
exports.UNKNOWN_SCALE = UNKNOWN_SCALE;
exports.MAX_AUTO_SCALE = MAX_AUTO_SCALE;
exports.SCROLLBAR_PADDING = SCROLLBAR_PADDING;
exports.VERTICAL_PADDING = VERTICAL_PADDING;
exports.isValidRotation = isValidRotation;
exports.cloneObj = cloneObj;
exports.PresentationModeState = PresentationModeState;
exports.RendererType = RendererType;
exports.mozL10n = mozL10n;
exports.NullL10n = NullL10n;
exports.EventBus = EventBus;
exports.ProgressBar = ProgressBar;
exports.getPDFFileNameFromURL = getPDFFileNameFromURL;
exports.noContextMenuHandler = noContextMenuHandler;
exports.parseQueryString = parseQueryString;
exports.getVisibleElements = getVisibleElements;
exports.roundToDivide = roundToDivide;
exports.approximateFraction = approximateFraction;
exports.getOutputScale = getOutputScale;
exports.scrollIntoView = scrollIntoView;
exports.watchScroll = watchScroll;
exports.binarySearchFirstItem = binarySearchFirstItem;
exports.normalizeWheelEventDelta = normalizeWheelEventDelta;
exports.animationStarted = animationStarted;
exports.localized = localized;
exports.WaitOnType = WaitOnType;
exports.waitOnEventOrTimeout = waitOnEventOrTimeout; |