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myscript.js
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if (window.console == null) { window["console"] = { log: function () { } } }; // some browsers do not set console
var Application = function () {
// event constants
this.NAVIGATION_CHANGE = "viewChange";
this.VIEW_NOT_FOUND = "viewNotFound";
this.STATE_NOT_FOUND = "stateNotFound";
this.APPLICATION_COMPLETE = "applicationComplete";
this.SIZE_STATE_NAME = "data-is-view-scaled";
this.currentQuery = { index: 0, rule: null, mediaText: null, id: null };
this.inclusionQuery = "(min-width: 0px)";
this.exclusionQuery = "none and (min-width: 99999px)";
this.LastModifiedDateLabelName = "LastModifiedDateLabel";
this.viewScaleSliderId = "ViewScaleSliderInput";
this.pageRefreshedName = "showPageRefreshedNotification";
this.prefix = "--web-";
this.applicationStylesheet = null;
this.mediaQueryDictionary = {};
this.statesDictionary = {};
this.states = [];
this.views = {};
this.viewIds = [];
this.viewQueries = {};
this.numberOfViews = 0;
this.verticalPadding = 0;
this.horizontalPadding = 0;
this.stateName = null;
this.viewScale = 1;
this.viewLeft = 0;
this.viewTop = 0;
// view settings
this.showUpdateNotification = false;
this.showNavigationControls = false;
this.scaleViewsToFit = false;
this.scaleToFitOnDoubleClick = false;
this.actualSizeOnDoubleClick = false;
this.scaleViewsOnResize = false;
this.navigationOnKeypress = false;
this.showViewName = false;
this.enableDeepLinking = true;
this.refreshPageForChanges = false;
this.showRefreshNotifications = true;
// view controls
this.scaleViewSlider = null;
this.lastModifiedLabel = null;
this.supportsPopState = false; // window.history.pushState!=null;
this.initialized = false;
// refresh properties
this.refreshDuration = 250;
this.lastModifiedDate = null;
this.refreshRequest = null;
this.refreshInterval = null;
this.refreshContent = null;
this.refreshContentSize = null;
this.refreshCheckContent = false;
this.refreshCheckContentSize = false;
var self = this;
self.initialize = function (event) {
var view = self.getVisibleView();
if (view == null) view = self.getInitialView();
self.collectViews();
self.collectMediaQueries();
self.setViewOptions(view);
// sometimes the body size is 0 so we call this now and again later
if (self.initialized) {
window.addEventListener(self.NAVIGATION_CHANGE, self.viewChangeHandler);
window.addEventListener("keyup", self.keypressHandler);
window.addEventListener("keypress", self.keypressHandler);
window.addEventListener("resize", self.resizeHandler);
window.document.addEventListener("dblclick", self.doubleClickHandler);
if (self.supportsPopState) {
window.addEventListener('popstate', self.popStateHandler);
}
else {
window.addEventListener('hashchange', self.hashChangeHandler);
}
// we are ready to go
window.dispatchEvent(new Event(self.APPLICATION_COMPLETE));
}
if (self.initialized == false) {
if (self.showNavigationControls || (self.singlePageApplication && self.showByMediaQuery == false)) {
self.syncronizeViewToURL();
}
if (self.refreshPageForChanges) {
self.setupRefreshForChanges();
}
self.initialized = true;
}
if (self.scaleViewsToFit) {
self.viewScale = self.scaleViewToFit(view);
if (self.viewScale < 0) {
setTimeout(self.scaleViewToFit, 500, view);
}
}
else if (view) {
self.viewScale = self.getViewScaleValue(view);
self.updateSliderValue(self.viewScale);
}
else {
// no view found
}
if (self.showUpdateNotification) {
self.showNotification();
}
//"addEventListener" in window ? null : window.addEventListener = window.attachEvent;
//"addEventListener" in document ? null : document.addEventListener = document.attachEvent;
}
///////////////////////////////////////
// AUTO REFRESH
///////////////////////////////////////
self.setupRefreshForChanges = function () {
self.refreshRequest = new XMLHttpRequest();
if (!self.refreshRequest) {
return false;
}
// get document start values immediately
self.requestRefreshUpdate();
}
/**
* Attempt to check the last modified date by the headers
* or the last modified property from the byte array (experimental)
**/
self.requestRefreshUpdate = function () {
var url = document.location.href;
var protocol = window.location.protocol;
var method;
try {
if (self.refreshCheckContentSize) {
self.refreshRequest.open('HEAD', url, true);
}
else if (self.refreshCheckContent) {
self.refreshContent = document.documentElement.outerHTML;
self.refreshRequest.open('GET', url, true);
self.refreshRequest.responseType = "text";
}
else {
// get page last modified date for the first call to compare to later
if (self.lastModifiedDate == null) {
// File system does not send headers in FF so get blob if possible
if (protocol == "file:") {
self.refreshRequest.open("GET", url, true);
self.refreshRequest.responseType = "blob";
}
else {
self.refreshRequest.open("HEAD", url, true);
self.refreshRequest.responseType = "blob";
}
self.refreshRequest.onload = self.refreshOnLoadOnceHandler;
// In some browsers (Chrome & Safari) this error occurs at send:
//
// Chrome - Access to XMLHttpRequest at 'file:///index.html' from origin 'null'
// has been blocked by CORS policy:
// Cross origin requests are only supported for protocol schemes:
// http, data, chrome, chrome-extension, https.
//
// Safari - XMLHttpRequest cannot load file:///Users/user/Public/index.html. Cross origin requests are only supported for HTTP.
//
// Solution is to run a local server, set local permissions or test in another browser
self.refreshRequest.send(null);
// In MS browsers the following behavior occurs possibly due to an AJAX call to check last modified date:
//
// DOM7011: The code on this page disabled back and forward caching.
// In Brave (Chrome) error when on the server
// index.js:221 HEAD https://www.example.com/ net::ERR_INSUFFICIENT_RESOURCES
// self.refreshRequest.send(null);
}
else {
self.refreshRequest = new XMLHttpRequest();
self.refreshRequest.onreadystatechange = self.refreshHandler;
self.refreshRequest.ontimeout = function () {
self.log("Couldn't find page to check for updates");
}
var method;
if (protocol == "file:") {
method = "GET";
}
else {
method = "HEAD";
}
//refreshRequest.open('HEAD', url, true);
self.refreshRequest.open(method, url, true);
self.refreshRequest.responseType = "blob";
self.refreshRequest.send(null);
}
}
}
catch (error) {
self.log("Refresh failed for the following reason:")
self.log(error);
}
}
self.refreshHandler = function () {
var contentSize;
try {
if (self.refreshRequest.readyState === XMLHttpRequest.DONE) {
if (self.refreshRequest.status === 2 ||
self.refreshRequest.status === 200) {
var pageChanged = false;
self.updateLastModifiedLabel();
if (self.refreshCheckContentSize) {
var lastModifiedHeader = self.refreshRequest.getResponseHeader("Last-Modified");
contentSize = self.refreshRequest.getResponseHeader("Content-Length");
//lastModifiedDate = refreshRequest.getResponseHeader("Last-Modified");
var headers = self.refreshRequest.getAllResponseHeaders();
var hasContentHeader = headers.indexOf("Content-Length") != -1;
if (hasContentHeader) {
contentSize = self.refreshRequest.getResponseHeader("Content-Length");
// size has not been set yet
if (self.refreshContentSize == null) {
self.refreshContentSize = contentSize;
// exit and let interval call this method again
return;
}
if (contentSize != self.refreshContentSize) {
pageChanged = true;
}
}
}
else if (self.refreshCheckContent) {
if (self.refreshRequest.responseText != self.refreshContent) {
pageChanged = true;
}
}
else {
lastModifiedHeader = self.getLastModified(self.refreshRequest);
if (self.lastModifiedDate != lastModifiedHeader) {
self.log("lastModifiedDate:" + self.lastModifiedDate + ",lastModifiedHeader:" + lastModifiedHeader);
pageChanged = true;
}
}
if (pageChanged) {
clearInterval(self.refreshInterval);
self.refreshUpdatedPage();
return;
}
}
else {
self.log('There was a problem with the request.');
}
}
}
catch (error) {
//console.log('Caught Exception: ' + error);
}
}
self.refreshOnLoadOnceHandler = function (event) {
// get the last modified date
if (self.refreshRequest.response) {
self.lastModifiedDate = self.getLastModified(self.refreshRequest);
if (self.lastModifiedDate != null) {
if (self.refreshInterval == null) {
self.refreshInterval = setInterval(self.requestRefreshUpdate, self.refreshDuration);
}
}
else {
self.log("Could not get last modified date from the server");
}
}
}
self.refreshUpdatedPage = function () {
if (self.showRefreshNotifications) {
var date = new Date().setTime((new Date().getTime() + 10000));
document.cookie = encodeURIComponent(self.pageRefreshedName) + "=true" + "; max-age=6000;" + " path=/";
}
document.location.reload(true);
}
self.showNotification = function (duration) {
var notificationID = self.pageRefreshedName + "ID";
var notification = document.getElementById(notificationID);
if (duration == null) duration = 4000;
if (notification != null) { return; }
notification = document.createElement("div");
notification.id = notificationID;
notification.textContent = "PAGE UPDATED";
var styleRule = ""
styleRule = "position: fixed; padding: 7px 16px 6px 16px; font-family: Arial, sans-serif; font-size: 10px; font-weight: bold; left: 50%;";
styleRule += "top: 20px; background-color: rgba(0,0,0,.5); border-radius: 12px; color:rgb(235, 235, 235); transition: all 2s linear;";
styleRule += "transform: translateX(-50%); letter-spacing: .5px; filter: drop-shadow(2px 2px 6px rgba(0, 0, 0, .1))";
notification.setAttribute("style", styleRule);
notification.className = "PageRefreshedClass";
document.body.appendChild(notification);
setTimeout(function () {
notification.style.opacity = "0";
notification.style.filter = "drop-shadow( 0px 0px 0px rgba(0,0,0, .5))";
setTimeout(function () {
notification.parentNode.removeChild(notification);
}, duration)
}, duration);
document.cookie = encodeURIComponent(self.pageRefreshedName) + "=; max-age=1; path=/";
}
/**
* Get the last modified date from the header
* or file object after request has been received
**/
self.getLastModified = function (request) {
var date;
// file protocol - FILE object with last modified property
if (request.response && request.response.lastModified) {
date = request.response.lastModified;
}
// http protocol - check headers
if (date == null) {
date = request.getResponseHeader("Last-Modified");
}
return date;
}
self.updateLastModifiedLabel = function () {
var labelValue = "";
if (self.lastModifiedLabel == null) {
self.lastModifiedLabel = document.getElementById("LastModifiedLabel");
}
if (self.lastModifiedLabel) {
var seconds = parseInt(((new Date().getTime() - Date.parse(document.lastModified)) / 1000 / 60) * 100 + "");
var minutes = 0;
var hours = 0;
if (seconds < 60) {
seconds = Math.floor(seconds / 10) * 10;
labelValue = seconds + " seconds";
}
else {
minutes = parseInt((seconds / 60) + "");
if (minutes > 60) {
hours = parseInt((seconds / 60 / 60) + "");
labelValue += hours == 1 ? " hour" : " hours";
}
else {
labelValue = minutes + "";
labelValue += minutes == 1 ? " minute" : " minutes";
}
}
if (seconds < 10) {
labelValue = "Updated now";
}
else {
labelValue = "Updated " + labelValue + " ago";
}
if (self.lastModifiedLabel.firstElementChild) {
self.lastModifiedLabel.firstElementChild.textContent = labelValue;
}
else if ("textContent" in self.lastModifiedLabel) {
self.lastModifiedLabel.textContent = labelValue;
}
}
}
self.getShortString = function (string, length) {
if (length == null) length = 30;
string = string != null ? string.substr(0, length).replace(/\n/g, "") : "[String is null]";
return string;
}
self.getShortNumber = function (value, places) {
if (places == null || places < 1) places = 4;
value = Math.round(value * Math.pow(10, places)) / Math.pow(10, places);
return value;
}
///////////////////////////////////////
// NAVIGATION CONTROLS
///////////////////////////////////////
self.updateViewLabel = function () {
var viewNavigationLabel = document.getElementById("ViewNavigationLabel");
var view = self.getVisibleView();
var viewIndex = view ? self.getViewIndex(view) : -1;
var viewName = view ? self.getViewPreferenceValue(view, self.prefix + "view-name") : null;
var viewId = view ? view.id : null;
if (viewNavigationLabel && view) {
if (viewName && viewName.indexOf('"') != -1) {
viewName = viewName.replace(/"/g, "");
}
if (self.showViewName) {
viewNavigationLabel.textContent = viewName;
self.setTooltip(viewNavigationLabel, viewIndex + 1 + " of " + self.numberOfViews);
}
else {
viewNavigationLabel.textContent = viewIndex + 1 + " of " + self.numberOfViews;
self.setTooltip(viewNavigationLabel, viewName);
}
}
}
self.updateURL = function (view) {
view = view == null ? self.getVisibleView() : view;
var viewId = view ? view.id : null
var viewFragment = view ? "#" + viewId : null;
if (viewId && self.viewIds.length > 1 && self.enableDeepLinking) {
if (self.supportsPopState == false) {
self.setFragment(viewId);
}
else {
if (viewFragment != window.location.hash) {
if (window.location.hash == null) {
window.history.replaceState({ name: viewId }, null, viewFragment);
}
else {
window.history.pushState({ name: viewId }, null, viewFragment);
}
}
}
}
}
self.setFragment = function (value) {
window.location.hash = "#" + value;
}
self.setTooltip = function (element, value) {
// setting the tooltip in edge causes a page crash on hover
if (/Edge/.test(navigator.userAgent)) { return; }
if ("title" in element) {
element.title = value;
}
}
self.getStylesheetRules = function (styleSheet) {
try {
if (styleSheet) return styleSheet.cssRules || styleSheet.rules;
return document.styleSheets[0]["cssRules"] || document.styleSheets[0]["rules"];
}
catch (error) {
// ERRORS:
// SecurityError: The operation is insecure.
// Errors happen when script loads before stylesheet or loading an external css locally
// InvalidAccessError: A parameter or an operation is not supported by the underlying object
// Place script after stylesheet
console.log(error);
if (error.toString().indexOf("The operation is insecure") != -1) {
console.log("Load the stylesheet before the script or load the stylesheet inline until it can be loaded on a server")
}
return [];
}
}
/**
* If single page application hide all of the views except first
**/
self.hideViews = function (selectIndex) {
var rules = self.getStylesheetRules();
var queryIndex = 0;
var numberOfRules = rules != null ? rules.length : 0;
// loop through rules and hide media queries except selected
for (var i = 0; i < numberOfRules; i++) {
var rule = rules[i];
if (rule.media != null) {
if (queryIndex == selectIndex) {
self.currentQuery.mediaText = rule.conditionText;
self.currentQuery.index = selectIndex;
self.currentQuery.rule = rule;
self.enableMediaQuery(rule);
}
else {
self.disableMediaQuery(rule);
}
queryIndex++;
}
}
self.numberOfViews = queryIndex;
self.updateViewLabel();
self.updateURL();
self.dispatchViewChange();
var view = self.getVisibleView();
var viewIndex = view ? self.getViewIndex(view) : -1;
return viewIndex == selectIndex ? view : null;
}
self.showView = function (view, setViewOptions) {
var id = view ? view.id : null;
var query = id ? self.mediaQueryDictionary[id] : null;
var display = null;
setViewOptions = setViewOptions == null ? true : setViewOptions;
if (query) {
self.enableMediaQuery(query);
if (view == null) view = self.getVisibleView();
if (view && setViewOptions) self.setViewOptions(view);
}
else if (id) {
display = window.getComputedStyle(view).getPropertyValue("display");
if (display == "" || display == "none") {
view.style.display = "block";
}
}
}
self.showViewById = function (id, setViewOptions) {
var view = id ? self.getViewById(id) : null;
var query = id ? self.mediaQueryDictionary[id] : null;
var display = null;
setViewOptions = setViewOptions == null ? true : setViewOptions;
if (query) {
self.enableMediaQuery(query);
if (setViewOptions && view) self.setViewOptions(view);
}
else if (id) {
display = window.getComputedStyle(view).getPropertyValue("display");
if (display == "" || display == "none") {
view.style.display = "block";
}
}
}
self.setViewOptions = function (view) {
if (view) {
self.minimumScale = self.getViewPreferenceValue(view, self.prefix + "minimum-scale");
self.scaleViewsToFit = self.getViewPreferenceBoolean(view, self.prefix + "scale-to-fit");
self.scaleToFitType = self.getViewPreferenceValue(view, self.prefix + "scale-to-fit-type");
self.scaleToFitOnDoubleClick = self.getViewPreferenceBoolean(view, self.prefix + "scale-on-double-click");
self.actualSizeOnDoubleClick = self.getViewPreferenceBoolean(view, self.prefix + "actual-size-on-double-click");
self.scaleViewsOnResize = self.getViewPreferenceBoolean(view, self.prefix + "scale-on-resize");
self.enableScaleUp = self.getViewPreferenceBoolean(view, self.prefix + "enable-scale-up");
self.centerHorizontally = self.getViewPreferenceBoolean(view, self.prefix + "center-horizontally");
self.centerVertically = self.getViewPreferenceBoolean(view, self.prefix + "center-vertically");
self.navigationOnKeypress = self.getViewPreferenceBoolean(view, self.prefix + "navigate-on-keypress");
self.showViewName = self.getViewPreferenceBoolean(view, self.prefix + "show-view-name");
self.refreshPageForChanges = self.getViewPreferenceBoolean(view, self.prefix + "refresh-for-changes");
self.refreshPageForChangesInterval = self.getViewPreferenceValue(view, self.prefix + "refresh-interval");
self.showNavigationControls = self.getViewPreferenceBoolean(view, self.prefix + "show-navigation-controls");
self.scaleViewSlider = self.getViewPreferenceBoolean(view, self.prefix + "show-scale-controls");
self.enableDeepLinking = self.getViewPreferenceBoolean(view, self.prefix + "enable-deep-linking");
self.singlePageApplication = self.getViewPreferenceBoolean(view, self.prefix + "application");
self.showByMediaQuery = self.getViewPreferenceBoolean(view, self.prefix + "show-by-media-query");
self.showUpdateNotification = document.cookie != "" ? document.cookie.indexOf(self.pageRefreshedName) != -1 : false;
self.imageComparisonDuration = self.getViewPreferenceValue(view, self.prefix + "image-comparison-duration");
if (self.scaleViewsToFit) {
var newScaleValue = self.scaleViewToFit(view);
if (newScaleValue < 0) {
setTimeout(self.scaleViewToFit, 500, view);
}
}
else {
self.viewScale = self.getViewScaleValue(view);
self.updateSliderValue(self.viewScale);
}
if (self.imageComparisonDuration != null) {
// todo
}
if (self.refreshPageForChangesInterval != null) {
self.refreshDuration = Number(self.refreshPageForChangesInterval);
}
}
}
self.previousView = function (event) {
var rules = self.getStylesheetRules();
var view = self.getVisibleView()
var index = view ? self.getViewIndex(view) : -1;
var prevQueryIndex = index != -1 ? index - 1 : self.currentQuery.index - 1;
var queryIndex = 0;
var numberOfRules = rules != null ? rules.length : 0;
if (event) {
event.stopImmediatePropagation();
}
if (prevQueryIndex < 0) {
return;
}
// loop through rules and hide media queries except selected
for (var i = 0; i < numberOfRules; i++) {
var rule = rules[i];
if (rule.media != null) {
if (queryIndex == prevQueryIndex) {
self.currentQuery.mediaText = rule.conditionText;
self.currentQuery.index = prevQueryIndex;
self.currentQuery.rule = rule;
self.enableMediaQuery(rule);
self.updateViewLabel();
self.updateURL();
self.dispatchViewChange();
}
else {
self.disableMediaQuery(rule);
}
queryIndex++;
}
}
}
self.nextView = function (event) {
var rules = self.getStylesheetRules();
var view = self.getVisibleView();
var index = view ? self.getViewIndex(view) : -1;
var nextQueryIndex = index != -1 ? index + 1 : self.currentQuery.index + 1;
var queryIndex = 0;
var numberOfRules = rules != null ? rules.length : 0;
var numberOfMediaQueries = self.getNumberOfMediaRules();
if (event) {
event.stopImmediatePropagation();
}
if (nextQueryIndex >= numberOfMediaQueries) {
return;
}
// loop through rules and hide media queries except selected
for (var i = 0; i < numberOfRules; i++) {
var rule = rules[i];
if (rule.media != null) {
if (queryIndex == nextQueryIndex) {
self.currentQuery.mediaText = rule.conditionText;
self.currentQuery.index = nextQueryIndex;
self.currentQuery.rule = rule;
self.enableMediaQuery(rule);
self.updateViewLabel();
self.updateURL();
self.dispatchViewChange();
}
else {
self.disableMediaQuery(rule);
}
queryIndex++;
}
}
}
self.enableMediaQuery = function (rule) {
try {
rule.media.mediaText = self.inclusionQuery;
}
catch (error) {
//self.log(error);
rule.conditionText = self.inclusionQuery;
}
}
self.disableMediaQuery = function (rule) {
try {
rule.media.mediaText = self.exclusionQuery;
}
catch (error) {
rule.conditionText = self.exclusionQuery;
}
}
self.dispatchViewChange = function () {
try {
var event = new Event(self.NAVIGATION_CHANGE);
window.dispatchEvent(event);
}
catch (error) {
// In IE 11: Object doesn't support this action
}
}
self.getNumberOfMediaRules = function () {
var rules = self.getStylesheetRules();
var numberOfRules = rules ? rules.length : 0;
var numberOfQueries = 0;
for (var i = 0; i < numberOfRules; i++) {
if (rules[i].media != null) { numberOfQueries++; }
}
return numberOfQueries;
}
/////////////////////////////////////////
// VIEW SCALE
/////////////////////////////////////////
self.sliderChangeHandler = function (event) {
var value = self.getShortNumber(event.currentTarget.value / 100);
var view = self.getVisibleView();
self.setViewScaleValue(view, false, value, true);
}
self.updateSliderValue = function (scale) {
var slider = document.getElementById(self.viewScaleSliderId);
var tooltip = parseInt(scale * 100 + "") + "%";
var inputType;
var inputValue;
if (slider) {
inputValue = self.getShortNumber(scale * 100);
if (inputValue != slider["value"]) {
slider["value"] = inputValue;
}
inputType = slider.getAttributeNS(null, "type");
if (inputType != "range") {
// input range is not supported
slider.style.display = "none";
}
self.setTooltip(slider, tooltip);
}
}
self.viewChangeHandler = function (event) {
var view = self.getVisibleView();
var matrix = view ? getComputedStyle(view).transform : null;
if (matrix) {
self.viewScale = self.getViewScaleValue(view);
var scaleNeededToFit = self.getViewFitToViewportScale(view);
var isViewLargerThanViewport = scaleNeededToFit < 1;
// scale large view to fit if scale to fit is enabled
if (self.scaleViewsToFit) {
self.scaleViewToFit(view);
}
else {
self.updateSliderValue(self.viewScale);
}
}
}
self.getViewScaleValue = function (view) {
var matrix = getComputedStyle(view).transform;
if (matrix) {
var matrixArray = matrix.replace("matrix(", "").split(",");
var scaleX = parseFloat(matrixArray[0]);
var scaleY = parseFloat(matrixArray[3]);
var scale = Math.min(scaleX, scaleY);
}
return scale;
}
self.getViewTranslateYValue = function (view) {
var matrix = getComputedStyle(view).transform;
if (matrix) {
var matrixArray = matrix.replace("matrix(", "").split(",");
var translateY = parseFloat(matrixArray[5]);
}
return translateY;
}
self.getViewTop = function (view) {
var top = getComputedStyle(view).top;
return top;
}
/**
* Scales view to scale.
* @param {Object} view view to scale. views are in views array
* @param {Boolean} scaleToFit set to true to scale to fit. set false to use desired scale value
* @param {Number} desiredScale scale to define. not used if scale to fit is false
* @param {Boolean} isSliderChange indicates if slider is callee
*/
self.setViewScaleValue = function (view, scaleToFit, desiredScale, isSliderChange) {
var enableScaleUp = self.enableScaleUp;
var scaleToFitType = self.scaleToFitType;
var minimumScale = self.minimumScale;
var hasMinimumScale = !isNaN(minimumScale) && minimumScale != ""
var scaleNeededToFit = self.getViewFitToViewportScale(view, enableScaleUp);
var scaleNeededToFitWidth = self.getViewFitToViewportWidthScale(view, enableScaleUp);
var scaleNeededToFitHeight = self.getViewFitToViewportHeightScale(view, enableScaleUp);
var scaleToFitFull = self.getViewFitToViewportScale(view, true);
var scaleToFitFullWidth = self.getViewFitToViewportWidthScale(view, true);
var scaleToFitFullHeight = self.getViewFitToViewportHeightScale(view, true);
var scaleToWidth = scaleToFitType == "width";
var scaleToHeight = scaleToFitType == "height";
var shrunkToFit = false;
var topPosition = null;
var leftPosition = null;
var translateY = null;
var translateX = null;
var transformValue = "";
var canCenterVertically = true;
var canCenterHorizontally = true;
//console.log("height:"+scaleNeededToFitHeight+",width:"+scaleNeededToFitWidth+",fit:"+scaleNeededToFit,"desired:"+desiredScale);
if (scaleToFit && isSliderChange != true) {
if (scaleToFitType == "fit") {
desiredScale = scaleNeededToFit;
}
else if (scaleToFitType == "width") {
desiredScale = scaleNeededToFitWidth;
}
else if (scaleToFitType == "height") {
desiredScale = scaleNeededToFitHeight;
}
}
else {
if (isNaN(desiredScale)) {
desiredScale = 1;
}
}
self.updateSliderValue(desiredScale);
// scale to fit width
if (scaleToWidth && scaleToHeight == false) {
canCenterVertically = scaleNeededToFitHeight >= scaleNeededToFitWidth;
canCenterHorizontally = scaleNeededToFitWidth >= 1 && enableScaleUp == false;
if (isSliderChange) {
canCenterHorizontally = desiredScale < scaleToFitFullWidth;
}
else if (scaleToFit) {
desiredScale = scaleNeededToFitWidth;
}
if (hasMinimumScale) {
desiredScale = Math.max(desiredScale, Number(minimumScale));
}
//desiredScale = self.getShortNumber(desiredScale);
desiredScale = self.getShortNumber(desiredScale);
if (desiredScale > 1 && (enableScaleUp || isSliderChange)) {
transformValue = "scale(" + desiredScale + ")";
}
else if (desiredScale >= 1 && enableScaleUp == false) {
transformValue = "scale(" + 1 + ")";
}
else {
transformValue = "scale(" + desiredScale + ")";
}
if (self.centerVertically) {
if (canCenterVertically) {
translateY = "-50%";
topPosition = "50%";
}
else {
translateY = "0";
topPosition = "0";
}
if (view.style.top != topPosition) {
view.style.top = topPosition + "";
}
if (canCenterVertically) {
transformValue += " translateY(" + translateY + ")";
}
}
if (self.centerHorizontally) {
if (canCenterHorizontally) {
translateX = "-50%";
leftPosition = "50%";
}
else {
translateX = "0";
leftPosition = "0";
}
if (view.style.left != leftPosition) {
view.style.left = leftPosition + "";
}
if (canCenterHorizontally) {
transformValue += " translateX(" + translateX + ")";
}
}
view.style.transformOrigin = "0 0";
view.style.transform = transformValue;
self.viewScale = desiredScale;
self.viewLeft = leftPosition;
self.viewTop = topPosition;
return desiredScale;
}
// scale to fit height
if (scaleToHeight && scaleToWidth == false) {
//canCenterVertically = scaleNeededToFitHeight>=scaleNeededToFitWidth;
//canCenterHorizontally = scaleNeededToFitHeight<=scaleNeededToFitWidth && enableScaleUp==false;
canCenterVertically = scaleNeededToFitHeight >= scaleNeededToFitWidth;
canCenterHorizontally = scaleNeededToFitWidth >= 1 && enableScaleUp == false;
if (isSliderChange) {
canCenterHorizontally = desiredScale < scaleToFitFullHeight;
}
else if (scaleToFit) {
desiredScale = scaleNeededToFitHeight;
}
if (hasMinimumScale) {
desiredScale = Math.max(desiredScale, Number(minimumScale));
}
desiredScale = self.getShortNumber(desiredScale);
if (desiredScale > 1 && (enableScaleUp || isSliderChange)) {
transformValue = "scale(" + desiredScale + ")";
}
else if (desiredScale >= 1 && enableScaleUp == false) {
transformValue = "scale(" + 1 + ")";
}