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tx_dlf_utils-3e6cda8.js
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tx_dlf_utils-3e6cda8.js
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'use strict';
/**
* (c) Kitodo. Key to digital objects e.V. <[email protected]>
*
* This file is part of the Kitodo and TYPO3 projects.
*
* @license GNU General Public License version 3 or later.
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*/
/**
* Base namespace for utility functions used by the dlf module.
*
* @const
*/
var dlfUtils = dlfUtils || {};
/**
* @type {{ZOOMIFY: string}}
*/
dlfUtils.CUSTOM_MIMETYPE = {
IIIF: 'application/vnd.kitodo.iiif',
IIP: 'application/vnd.netfpx',
ZOOMIFY: 'application/vnd.kitodo.zoomify'
};
/**
* @type {number}
*/
dlfUtils.RUNNING_INDEX = 99999999;
/**
* @param imageSourceObjs
* @param {string} opt_origin
* @return {Array.<ol.layer.Layer>}
*/
dlfUtils.createOl3Layers = function (imageSourceObjs, opt_origin) {
var origin = opt_origin !== undefined ? opt_origin : null,
widthSum = 0,
offsetWidth = 0,
layers = [];
imageSourceObjs.forEach(function (imageSourceObj) {
var tileSize = void 0;
if (widthSum > 0) {
// set offset width in case of multiple images
offsetWidth = widthSum;
}
//
// Create layer
//
var extent = [offsetWidth, 0, imageSourceObj.width + offsetWidth, imageSourceObj.height],
layer = void 0;
if (imageSourceObj.mimetype === dlfUtils.CUSTOM_MIMETYPE.ZOOMIFY) {
// create zoomify layer
layer = new ol.layer.Tile({
source: new ol.source.Zoomify({
url: imageSourceObj.src,
size: [imageSourceObj.width, imageSourceObj.height],
crossOrigin: origin,
offset: [offsetWidth, 0]
})
});
} else if (imageSourceObj.mimetype === dlfUtils.CUSTOM_MIMETYPE.IIIF) {
var quality;
tileSize = imageSourceObj.tilesize !== undefined && imageSourceObj.tilesize.length > 0
? imageSourceObj.tilesize[0]
: 256,
quality = imageSourceObj.qualities !== undefined && imageSourceObj.qualities.length > 0
? $.inArray('color', imageSourceObj.qualities) >= 0
? 'color'
: $.inArray('native', imageSourceObj.qualities) >= 0
? 'native'
: 'default'
: 'default';
layer = new ol.layer.Tile({
source: new dlfViewerSource.IIIF({
url: imageSourceObj.src,
size: [imageSourceObj.width, imageSourceObj.height],
crossOrigin: origin,
resolutions: imageSourceObj.resolutions,
tileSize: tileSize,
format: 'jpg',
quality: quality,
offset: [offsetWidth, 0],
projection: new ol.proj.Projection({
code: 'kitodo-image',
units: 'pixels',
extent: extent
})
})
});
} else if (imageSourceObj.mimetype === dlfUtils.CUSTOM_MIMETYPE.IIP) {
tileSize = imageSourceObj.tilesize !== undefined && imageSourceObj.tilesize.length > 0
? imageSourceObj.tilesize[0]
: 256;
layer = new ol.layer.Tile({
source: new dlfViewerSource.IIP({
url: imageSourceObj.src,
size: [imageSourceObj.width, imageSourceObj.height],
crossOrigin: origin,
tileSize: tileSize,
offset: [offsetWidth, 0]
})
});
} else {
// create static image source
layer = new ol.layer.Image({
source: new ol.source.ImageStatic({
url: imageSourceObj.src,
projection: new ol.proj.Projection({
code: 'kitodo-image',
units: 'pixels',
extent: extent
}),
imageExtent: extent,
crossOrigin: origin
})
});
}
layers.push(layer);
// add to cumulative width
widthSum += imageSourceObj.width;
});
return layers;
};
/**
* @param {Array.<{src: *, width: *, height: *}>} images
* @return {ol.View}
*/
dlfUtils.createOl3View = function (images) {
//
// Calculate map extent
//
var maxLonX = images.reduce(function (prev, curr) {
return prev + curr.width;
}, 0),
maxLatY = images.reduce(function (prev, curr) {
return Math.max(prev, curr.height);
}, 0),
extent = images[0].mimetype !== dlfUtils.CUSTOM_MIMETYPE.ZOOMIFY &&
images[0].mimetype !== dlfUtils.CUSTOM_MIMETYPE.IIIF &&
images[0].mimetype !== dlfUtils.CUSTOM_MIMETYPE.IIP
? [0, 0, maxLonX, maxLatY]
: [0, -maxLatY, maxLonX, 0];
// globally define max zoom
window.OL3_MAX_ZOOM = 8;
// define map projection
var proj = new ol.proj.Projection({
code: 'kitodo-image',
units: 'pixels',
extent: extent
});
// define view
var viewParams = {
projection: proj,
center: ol.extent.getCenter(extent),
zoom: 1,
maxZoom: window.OL3_MAX_ZOOM,
extent: extent
};
return new ol.View(viewParams);
};
/**
* Returns true if the specified value is not undefiend
* @param {?} val
* @return {boolean}
*/
dlfUtils.exists = function (val) {
return val !== undefined;
};
/**
* Fetch image data for given image sources.
*
* @param {Array.<{url: *, mimetype: *}>} imageSourceObjs
* @return {JQueryStatic.Deferred}
*/
dlfUtils.fetchImageData = function (imageSourceObjs) {
// use deferred for async behavior
var deferredResponse = new $.Deferred();
/**
* This holds information about the loading state of the images
* @type {Array.<number>}
*/
var imageSourceData = [],
loadCount = 0,
finishLoading = function finishLoading() {
loadCount += 1;
if (loadCount === imageSourceObjs.length) {
deferredResponse.resolve(imageSourceData);
}
};
imageSourceObjs.forEach(function (imageSourceObj, index) {
if (imageSourceObj.mimetype === dlfUtils.CUSTOM_MIMETYPE.ZOOMIFY) {
dlfUtils.fetchZoomifyData(imageSourceObj)
.done(function (imageSourceDataObj) {
imageSourceData[index] = imageSourceDataObj;
finishLoading();
});
} else if (imageSourceObj.mimetype === dlfUtils.CUSTOM_MIMETYPE.IIIF) {
dlfUtils.getIIIFResource(imageSourceObj)
.done(function (imageSourceDataObj) {
imageSourceData[index] = imageSourceDataObj;
finishLoading();
});
} else if (imageSourceObj.mimetype === dlfUtils.CUSTOM_MIMETYPE.IIP) {
dlfUtils.fetchIIPData(imageSourceObj)
.done(function (imageSourceDataObj) {
imageSourceData[index] = imageSourceDataObj;
finishLoading();
});
} else {
// In the worse case expect static image file
dlfUtils.fetchStaticImageData(imageSourceObj)
.done(function (imageSourceDataObj) {
imageSourceData[index] = imageSourceDataObj;
finishLoading();
});
}
});
return deferredResponse;
};
/**
* Fetches the image data for static images source.
*
* @param {{url: *, mimetype: *}} imageSourceObj
* @return {JQueryStatic.Deferred}
*/
dlfUtils.fetchStaticImageData = function (imageSourceObj) {
// use deferred for async behavior
var deferredResponse = new $.Deferred();
// Create new Image object.
var image = new Image();
// Register onload handler.
image.onload = function () {
var imageDataObj = {
src: this.src,
mimetype: imageSourceObj.mimetype,
width: this.width,
height: this.height
};
deferredResponse.resolve(imageDataObj);
};
// Initialize image loading.
image.src = imageSourceObj.url;
return deferredResponse;
};
/**
* @param imageSourceObj
* @returns {JQueryStatic.Deferred}
*/
dlfUtils.getIIIFResource = function getIIIFResource(imageSourceObj) {
var deferredResponse = new $.Deferred();
var type = 'GET';
$.ajax({
url: dlfViewerSource.IIIF.getMetdadataURL(imageSourceObj.url),
type: type,
dataType: 'json'
}).done(cb).fail(error);
function cb(data) {
var mimetype = imageSourceObj.mimetype;
if (dlfUtils.supportsIIIF(data)) {
if (data.protocol && data.protocol === 'http://iiif.io/api/image') {
var uri = decodeURI(data['@id']);
uri = dlfUtils.removeInfoJson(uri);
var imageResource = dlfUtils.buildImageV2(mimetype, uri, data);
deferredResponse.resolve(imageResource);
} else {
var _uri = imageSourceObj.url;
_uri = dlfUtils.removeInfoJson(_uri);
var _imageResource = dlfUtils.buildImageV1(mimetype, _uri, data);
deferredResponse.resolve(_imageResource);
}
}
}
function error(jqXHR, errorThrown) {
console.log("error", jqXHR.status);
console.log("status: " + errorThrown);
}
return deferredResponse;
};
/**
* @param uri
* @returns {*}
*/
dlfUtils.removeInfoJson = function removeInfoJson(uri) {
if (uri.endsWith('/info.json')) {
uri = uri.substr(0, uri.lastIndexOf('/'));
}
return uri;
};
/**
*
* @param data
* @param data.protocol
* @param data.identifier
* @param data.width
* @param data.height
* @param data.profile
* @param data.documentElement
* @returns {boolean}
*/
dlfUtils.supportsIIIF = function supportsIIIF(data) {
// Version 2.0 and forwards
if (data.protocol && data.protocol === 'http://iiif.io/api/image') {
return true;
// Version 1.1
} else if (data['@context'] && (
data['@context'] === "http://library.stanford.edu/iiif/image-api/1.1/context.json" ||
data['@context'] === "http://iiif.io/api/image/1/context.json")) {
return true;
// Version 1.0
} else if (data.profile &&
data.profile.indexOf("http://library.stanford.edu/iiif/image-api/compliance.html") === 0) {
return true;
} else if (data.identifier && data.width && data.height) {
return true;
} else return data.documentElement && "info" === data.documentElement.tagName &&
"http://library.stanford.edu/iiif/image-api/ns/" === data.documentElement.namespaceURI;
};
dlfUtils.iiifProfiles = {
'http://iiif.io/api/image/2/level1.json': {
formats: ['jpg'],
qualities: ['default']
},
'http://iiif.io/api/image/2/level2.json': {
formats: ['jpg', 'png'],
qualities: ['default', 'bitonal']
},
'http://library.stanford.edu/iiif/image-api/1.1/compliance.html#level1': {
formats: ['jpg'],
qualities: ['native']
},
'http://library.stanford.edu/iiif/image-api/1.1/compliance.html#level2': {
formats: ['jpg', 'png'],
qualities: ['native', 'color', 'grey', 'bitonal']
},
'http://library.stanford.edu/iiif/image-api/compliance.html#level1': {
formats: ['jpg'],
qualities: ['native']
},
'http://library.stanford.edu/iiif/image-api/compliance.html#level2': {
formats: ['jpg', 'png'],
qualities: ['native', 'color', 'grey', 'bitonal']
},
'none' : {
formats: [],
qualities: []
}
};
/**
*
* @param mimetype
* @param uri
* @param jsonld
* @param jsonld.tiles
* @param jsonld.width
* @param jsonld.height
* @param jsonld.profile
* @param jsonld.scaleFactors
* @returns {{src: *, width, height, tilesize: [*,*], qualities: *, formats: *, resolutions: *, mimetype: *}}
*/
dlfUtils.buildImageV2 = function buildImageV2(mimetype, uri, jsonld) {
var levelProfile = jsonld.profile === undefined || dlfUtils.iiifProfiles[jsonld.profile[0]] === undefined ? dlfUtils.iiifProfiles['none'] : dlfUtils.iiifProfiles[jsonld.profile[0]];
return {
src: uri,
width: jsonld.width,
height: jsonld.height,
tilesize: jsonld.tiles !== undefined ? [jsonld.tiles.map(function (a) {
return a.width;
})[0], jsonld.tiles.map(function (a) {
return a.height;
})[0]] : [256,256],
qualities: ['default'].concat(levelProfile.qualities).concat(jsonld.profile[1].qualities === undefined ? [] : jsonld.profile[1].qualities),
formats: ['jpg'].concat(levelProfile.formats).concat(jsonld.profile[1].formats === undefined ? [] : jsonld.profile[1].formats),
resolutions: jsonld.tiles !== undefined ? jsonld.tiles.map(function (a) {
return a.scaleFactors;
})[0] : [],
mimetype: mimetype
};
};
/**
*
* @param mimetype
* @param uri
* @param jsonld
* @param jsonld.width
* @param jsonld.height
* @param jsonld.scale_factors
* @param jsonld.tile_width
* @param jsonld.tile_height
* @param jsonld.qualities
* @param jsonld.formats
* @returns {{src: *, width, height, tilesize: [*,*], qualities: *, formats: *, resolutions: *, mimetype: *}}
*/
dlfUtils.buildImageV1 = function buildImageV1(mimetype, uri, jsonld) {
var levelProfile = jsonld.profile === undefined || dlfUtils.iiifProfiles[jsonld.profile] === undefined ? dlfUtils.iiifProfiles['none'] : dlfUtils.iiifProfiles[jsonld.profile];
return {
src: uri,
width: jsonld.width,
height: jsonld.height,
tilesize: [jsonld.tile_width, jsonld.tile_height],
qualities: ['native'].concat(levelProfile.qualities).concat(jsonld.qualities === undefined ? [] : jsonld.qualities),
formats: ['jpg'].concat(levelProfile.formats).concat(jsonld.formats === undefined ? [] : jsonld.formats),
resolutions: jsonld.scale_factors,
mimetype: mimetype
};
};
/**
* Fetches the image data for iip images source.
*
* @param {{url: *, mimetype: *}} imageSourceObj
* @return {JQueryStatic.Deferred}
*/
dlfUtils.fetchIIPData = function (imageSourceObj) {
// use deferred for async behavior
var deferredResponse = new $.Deferred();
$.ajax({
url: dlfViewerSource.IIP.getMetdadataURL(imageSourceObj.url) //'http://localhost:8000/fcgi-bin/iipsrv.fcgi?FIF=F4713/HD7.tif&obj=IIP,1.0&obj=Max-size&obj=Tile-size&obj=Resolution-number',
}).done(cb);
function cb(response, type) {
if (type !== 'success') throw new Error('Problems while fetching ImageProperties.xml');
var imageDataObj = $.extend({
src: imageSourceObj.url,
mimetype: imageSourceObj.mimetype
}, dlfViewerSource.IIP.parseMetadata(response));
deferredResponse.resolve(imageDataObj);
}
return deferredResponse;
};
/**
* Fetch image data for zoomify source.
*
* @param {{url: *, mimetype: *}} imageSourceObj
* @return {JQueryStatic.Deferred}
*/
dlfUtils.fetchZoomifyData = function (imageSourceObj) {
// use deferred for async behavior
var deferredResponse = new $.Deferred();
$.ajax({
url: imageSourceObj.url
}).done(cb);
function cb(response, type) {
if (type !== 'success') {
throw new Error('Problems while fetching ImageProperties.xml');
}
var properties = $(response).find('IMAGE_PROPERTIES');
var imageDataObj = {
src: response.URL.substring(0, response.URL.lastIndexOf("/") + 1),
width: parseInt(properties.attr('WIDTH')),
height: parseInt(properties.attr('HEIGHT')),
tilesize: parseInt(properties.attr('TILESIZE')),
mimetype: imageSourceObj.mimetype
};
deferredResponse.resolve(imageDataObj);
}
return deferredResponse;
};
/**
* @param {string} name Name of the cookie
* @return {string|null} Value of the cookie
* @TODO replace unescape function
*/
dlfUtils.getCookie = function (name) {
var results = document.cookie.match("(^|;) ?" + name + "=([^;]*)(;|$)");
if (results) {
return decodeURI(results[2]);
} else {
return null;
}
};
/**
* Returns url parameters
* @returns {Object|undefined}
*/
dlfUtils.getUrlParams = function () {
if (Object.prototype.hasOwnProperty.call(location, 'search')) {
var search = decodeURIComponent(location.search).slice(1).split('&'),
params = {};
search.forEach(function (item) {
var s = item.split('=');
params[s[0]] = s[1];
});
return params;
}
return undefined;
};
/**
* Returns true if the specified value is null.
* @param {?} val
* @return {boolean}
*/
dlfUtils.isNull = function (val) {
return val === null;
};
/**
* Returns true if the specified value is null, empty or undefined.
* @param {?} val
* @return {boolean}
*/
dlfUtils.isNullEmptyUndefinedOrNoNumber = function (val) {
return val === null || val === undefined || val === '' || isNaN(val);
};
/**
* @param {Array.<{url: *, mimetype: *}>} imageObjs
* @return {boolean}
*/
dlfUtils.isCorsEnabled = function (imageObjs) {
// fix for proper working with ie
if (!window.location.origin) {
window.location.origin = window.location.protocol + '//' + window.location.hostname +
(window.location.port ? ':' + window.location.port : '');
}
// fetch data from server
// with access control allowed
var response = true;
imageObjs.forEach(function (imageObj) {
var url = imageObj.mimetype === dlfUtils.CUSTOM_MIMETYPE.ZOOMIFY
? imageObj.url.replace('ImageProperties.xml', 'TileGroup0/0-0-0.jpg')
:
imageObj.mimetype === dlfUtils.CUSTOM_MIMETYPE.IIIF
? dlfViewerSource.IIIF.getMetdadataURL(imageObj.url)
: imageObj.mimetype === dlfUtils.CUSTOM_MIMETYPE.IIP
? dlfViewerSource.IIP.getMetdadataURL(imageObj.url)
: imageObj.url;
url = window.location.origin + window.location.pathname + '?eID=tx_dlf_geturl_eid&url=' + encodeURIComponent(url) + '&header=2';
$.ajax({
url: url,
async: false
}).done(function (data, type) {
response = type === 'success' && data.indexOf('Access-Control-Allow-Origin') !== -1;
}).error(function (data, type) {
response = false;
});
});
return response;
};
/**
* Functions checks if WebGL is enabled in the browser
* @return {boolean}
*/
dlfUtils.isWebGLEnabled = function () {
if (!!window.WebGLRenderingContext) {
var canvas = document.createElement("canvas"),
rendererNames = ["webgl", "experimental-webgl", "moz-webgl", "webkit-3d"],
context = false;
for (var i = 0; i < rendererNames.length; i++) {
try {
context = canvas.getContext(rendererNames[i]);
if (context && typeof context.getParameter === "function") {
// WebGL is enabled;
return true;
}
} catch (e) {}
}
// WebGL not supported
return false;
}
// WebGL not supported
return false;
};
/**
* @param {Element} element
* @return {Object}
*/
dlfUtils.parseDataDic = function (element) {
var dataDicString = $(element).attr('data-dic'),
dataDicRecords = dataDicString.split(';'),
dataDic = {};
for (var i = 0, ii = dataDicRecords.length; i < ii; i++) {
var key = dataDicRecords[i].split(':')[0],
value = dataDicRecords[i].split(':')[1];
dataDic[key] = value;
}
return dataDic;
};
/**
* Set a cookie value
*
* @param {string} name The key of the value
* @param {?} value The value to save
*/
dlfUtils.setCookie = function (name, value) {
document.cookie = name + "=" + decodeURI(value) + "; path=/";
};
/**
* Scales down the given features geometries. as a further improvement this function
* adds a unique id to every feature
* @param {Array.<ol.Feature>} features
* @param {Object} imageObj
* @param {number} width
* @param {number} height
* @param {number=} opt_offset
* @deprecated
* @return {Array.<ol.Feature>}
*/
dlfUtils.scaleToImageSize = function (features, imageObj, width, height, opt_offset) {
// update size / scale settings of imageObj
var image = void 0;
if (width && height) {
image = {
'width': width,
'height': height,
'scale': imageObj.width / width
};
}
if (image === undefined) return [];
var scale = image.scale,
displayImageHeight = imageObj.height,
offset = opt_offset !== undefined ? opt_offset : 0;
// do rescaling and set a id
for (var i in features) {
var oldCoordinates = features[i].getGeometry().getCoordinates()[0],
newCoordinates = [];
for (var j = 0; j < oldCoordinates.length; j++) {
newCoordinates.push(
[offset + scale * oldCoordinates[j][0], displayImageHeight - scale * oldCoordinates[j][1]]);
}
features[i].setGeometry(new ol.geom.Polygon([newCoordinates]));
// set index
dlfUtils.RUNNING_INDEX += 1;
features[i].setId('' + dlfUtils.RUNNING_INDEX);
}
return features;
};
/**
* Search a feature collcetion for a feature with the given text
* @param {Array.<ol.Feature>} featureCollection
* @param {string} text
* @return {Array.<ol.Feature>|undefined}
*/
dlfUtils.searchFeatureCollectionForText = function (featureCollection, text) {
var features = [];
featureCollection.forEach(function (ft) {
if (ft.get('fulltext') !== undefined) {
if (ft.get('fulltext').toLowerCase().indexOf(text.toLowerCase()) > -1) features.push(ft);
}
});
return features.length > 0 ? features : undefined;
};