457 lines
13 KiB
JavaScript
457 lines
13 KiB
JavaScript
/* eslint-disable no-var */
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/* globals $, svgEditor, svgedit, svgCanvas, DOMParser */
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/*
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* ext-imagelib.js
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*
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* Licensed under the MIT License
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*
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* Copyright(c) 2010 Alexis Deveria
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*
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*/
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svgEditor.addExtension('imagelib', function () {
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'use strict';
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var uiStrings = svgEditor.uiStrings;
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$.extend(uiStrings, {
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imagelib: {
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select_lib: 'Select an image library',
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show_list: 'Show library list',
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import_single: 'Import single',
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import_multi: 'Import multiple',
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open: 'Open as new document'
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}
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});
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var imgLibs = [
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{
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name: 'Demo library (local)',
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url: svgEditor.curConfig.extPath + 'imagelib/index.html',
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description: 'Demonstration library for SVG-edit on this server'
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},
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{
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name: 'IAN Symbol Libraries',
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url: 'https://ian.umces.edu/symbols/catalog/svgedit/album_chooser.php',
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description: 'Free library of illustrations'
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},
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{
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name: 'Openclipart',
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url: 'https://openclipart.org/svgedit',
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description: 'Share and Use Images. Over 50,000 Public Domain SVG Images and Growing.'
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}
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];
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function closeBrowser () {
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$('#imgbrowse_holder').hide();
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}
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function importImage (url) {
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var newImage = svgCanvas.addSvgElementFromJson({
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'element': 'image',
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'attr': {
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'x': 0,
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'y': 0,
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'width': 0,
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'height': 0,
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'id': svgCanvas.getNextId(),
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'style': 'pointer-events:inherit'
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}
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});
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svgCanvas.clearSelection();
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svgCanvas.addToSelection([newImage]);
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svgCanvas.setImageURL(url);
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}
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var mode = 's';
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var multiArr = [];
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var transferStopped = false;
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var pending = {};
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var preview, submit;
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window.addEventListener('message', function (evt) {
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// Receive postMessage data
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var response = evt.data;
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if (!response || typeof response !== 'string') { // Todo: Should namespace postMessage API for this extension and filter out here
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// Do nothing
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return;
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}
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try { // This block can be removed if embedAPI moves away from a string to an object (if IE9 support not needed)
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var res = JSON.parse(response);
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if (res.namespace) { // Part of embedAPI communications
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return;
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}
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} catch (e) {}
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var char1 = response.charAt(0);
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var id;
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var svgStr;
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var imgStr;
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if (char1 !== '{' && transferStopped) {
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transferStopped = false;
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return;
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}
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if (char1 === '|') {
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var secondpos = response.indexOf('|', 1);
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id = response.substr(1, secondpos - 1);
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response = response.substr(secondpos + 1);
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char1 = response.charAt(0);
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}
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// Hide possible transfer dialog box
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$('#dialog_box').hide();
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var entry, curMeta;
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switch (char1) {
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case '{':
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// Metadata
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transferStopped = false;
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curMeta = JSON.parse(response);
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pending[curMeta.id] = curMeta;
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var name = (curMeta.name || 'file');
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var message = uiStrings.notification.retrieving.replace('%s', name);
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if (mode !== 'm') {
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$.process_cancel(message, function () {
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transferStopped = true;
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// Should a message be sent back to the frame?
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$('#dialog_box').hide();
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});
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} else {
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entry = $('<div>' + message + '</div>').data('id', curMeta.id);
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preview.append(entry);
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curMeta.entry = entry;
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}
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return;
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case '<':
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svgStr = true;
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break;
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case 'd':
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if (response.indexOf('data:image/svg+xml') === 0) {
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var pre = 'data:image/svg+xml;base64,';
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var src = response.substring(pre.length);
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response = svgedit.utilities.decode64(src);
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svgStr = true;
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break;
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} else if (response.indexOf('data:image/') === 0) {
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imgStr = true;
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break;
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}
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// Else fall through
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default:
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// TODO: See if there's a way to base64 encode the binary data stream
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// var str = 'data:;base64,' + svgedit.utilities.encode64(response, true);
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// Assume it's raw image data
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// importImage(str);
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// Don't give warning as postMessage may have been used by something else
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if (mode !== 'm') {
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closeBrowser();
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} else {
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pending[id].entry.remove();
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}
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// $.alert('Unexpected data was returned: ' + response, function() {
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// if (mode !== 'm') {
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// closeBrowser();
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// } else {
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// pending[id].entry.remove();
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// }
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// });
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return;
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}
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switch (mode) {
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case 's':
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// Import one
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if (svgStr) {
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svgCanvas.importSvgString(response);
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} else if (imgStr) {
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importImage(response);
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}
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closeBrowser();
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break;
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case 'm':
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// Import multiple
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multiArr.push([(svgStr ? 'svg' : 'img'), response]);
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var title;
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curMeta = pending[id];
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if (svgStr) {
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if (curMeta && curMeta.name) {
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title = curMeta.name;
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} else {
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// Try to find a title
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var xml = new DOMParser().parseFromString(response, 'text/xml').documentElement;
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title = $(xml).children('title').first().text() || '(SVG #' + response.length + ')';
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}
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if (curMeta) {
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preview.children().each(function () {
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if ($(this).data('id') === id) {
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if (curMeta.preview_url) {
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$(this).html('<img src="' + curMeta.preview_url + '">' + title);
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} else {
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$(this).text(title);
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}
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submit.removeAttr('disabled');
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}
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});
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} else {
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preview.append('<div>' + title + '</div>');
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submit.removeAttr('disabled');
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}
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} else {
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if (curMeta && curMeta.preview_url) {
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title = curMeta.name || '';
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}
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if (curMeta && curMeta.preview_url) {
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entry = '<img src="' + curMeta.preview_url + '">' + title;
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} else {
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entry = '<img src="' + response + '">';
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}
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if (curMeta) {
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preview.children().each(function () {
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if ($(this).data('id') === id) {
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$(this).html(entry);
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submit.removeAttr('disabled');
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}
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});
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} else {
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preview.append($('<div>').append(entry));
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submit.removeAttr('disabled');
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}
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}
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break;
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case 'o':
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// Open
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if (!svgStr) { break; }
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svgEditor.openPrep(function (ok) {
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if (!ok) { return; }
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svgCanvas.clear();
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svgCanvas.setSvgString(response);
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// updateCanvas();
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});
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closeBrowser();
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break;
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}
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}, true);
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function toggleMulti (show) {
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$('#lib_framewrap, #imglib_opts').css({right: (show ? 200 : 10)});
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if (!preview) {
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preview = $('<div id=imglib_preview>').css({
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position: 'absolute',
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top: 45,
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right: 10,
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width: 180,
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bottom: 45,
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background: '#fff',
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overflow: 'auto'
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}).insertAfter('#lib_framewrap');
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submit = $('<button disabled>Import selected</button>')
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.appendTo('#imgbrowse')
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.on('click touchend', function () {
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$.each(multiArr, function (i) {
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var type = this[0];
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var data = this[1];
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if (type === 'svg') {
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svgCanvas.importSvgString(data);
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} else {
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importImage(data);
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}
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svgCanvas.moveSelectedElements(i * 20, i * 20, false);
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});
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preview.empty();
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multiArr = [];
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$('#imgbrowse_holder').hide();
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}).css({
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position: 'absolute',
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bottom: 10,
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right: -10
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});
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}
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preview.toggle(show);
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submit.toggle(show);
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}
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function showBrowser () {
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var browser = $('#imgbrowse');
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if (!browser.length) {
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$('<div id=imgbrowse_holder><div id=imgbrowse class=toolbar_button>' +
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'</div></div>').insertAfter('#svg_docprops');
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browser = $('#imgbrowse');
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var allLibs = uiStrings.imagelib.select_lib;
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var libOpts = $('<ul id=imglib_opts>').appendTo(browser);
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var frame = $('<iframe/>').prependTo(browser).hide().wrap('<div id=lib_framewrap>');
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var header = $('<h1>').prependTo(browser).text(allLibs).css({
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position: 'absolute',
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top: 0,
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left: 0,
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width: '100%'
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});
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var cancel = $('<button>' + uiStrings.common.cancel + '</button>')
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.appendTo(browser)
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.on('click touchend', function () {
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$('#imgbrowse_holder').hide();
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}).css({
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position: 'absolute',
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top: 5,
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right: -10
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});
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var leftBlock = $('<span>').css({position: 'absolute', top: 5, left: 10}).appendTo(browser);
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var back = $('<button hidden>' + uiStrings.imagelib.show_list + '</button>')
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.appendTo(leftBlock)
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.on('click touchend', function () {
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frame.attr('src', 'about:blank').hide();
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libOpts.show();
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header.text(allLibs);
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back.hide();
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}).css({
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'margin-right': 5
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}).hide();
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/* var type = */ $('<select><option value=s>' +
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uiStrings.imagelib.import_single + '</option><option value=m>' +
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uiStrings.imagelib.import_multi + '</option><option value=o>' +
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uiStrings.imagelib.open + '</option></select>').appendTo(leftBlock).change(function () {
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mode = $(this).val();
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switch (mode) {
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case 's':
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case 'o':
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toggleMulti(false);
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break;
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case 'm':
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// Import multiple
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toggleMulti(true);
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break;
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}
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}).css({
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'margin-top': 10
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});
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cancel.prepend($.getSvgIcon('cancel', true));
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back.prepend($.getSvgIcon('tool_imagelib', true));
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$.each(imgLibs, function (i, opts) {
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$('<li>')
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.appendTo(libOpts)
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.text(opts.name)
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.on('click touchend', function () {
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frame.attr('src', opts.url).show();
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header.text(opts.name);
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libOpts.hide();
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back.show();
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}).append('<span>' + opts.description + '</span>');
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});
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} else {
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$('#imgbrowse_holder').show();
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}
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}
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return {
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svgicons: svgEditor.curConfig.extPath + 'ext-imagelib.xml',
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buttons: [{
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id: 'tool_imagelib',
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type: 'app_menu', // _flyout
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position: 4,
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title: 'Image library',
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events: {
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'mouseup': showBrowser
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}
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}],
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callback: function () {
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$('<style>').text(
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'#imgbrowse_holder {' +
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'position: absolute;' +
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'top: 0;' +
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'left: 0;' +
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'width: 100%;' +
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'height: 100%;' +
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'background-color: rgba(0, 0, 0, .5);' +
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'z-index: 5;' +
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'}' +
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'#imgbrowse {' +
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'position: absolute;' +
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'top: 25px;' +
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'left: 25px;' +
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'right: 25px;' +
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'bottom: 25px;' +
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'min-width: 300px;' +
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'min-height: 200px;' +
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'background: #B0B0B0;' +
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'border: 1px outset #777;' +
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'}' +
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'#imgbrowse h1 {' +
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'font-size: 20px;' +
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'margin: .4em;' +
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'text-align: center;' +
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'}' +
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'#lib_framewrap,' +
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'#imgbrowse > ul {' +
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'position: absolute;' +
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'top: 45px;' +
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'left: 10px;' +
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'right: 10px;' +
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'bottom: 10px;' +
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'background: white;' +
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'margin: 0;' +
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'padding: 0;' +
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'}' +
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'#imgbrowse > ul {' +
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'overflow: auto;' +
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'}' +
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'#imgbrowse > div {' +
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'border: 1px solid #666;' +
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'}' +
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'#imglib_preview > div {' +
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'padding: 5px;' +
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'font-size: 12px;' +
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'}' +
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'#imglib_preview img {' +
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'display: block;' +
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'margin: 0 auto;' +
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'max-height: 100px;' +
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'}' +
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'#imgbrowse li {' +
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'list-style: none;' +
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'padding: .5em;' +
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'background: #E8E8E8;' +
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'border-bottom: 1px solid #B0B0B0;' +
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'line-height: 1.2em;' +
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'font-style: sans-serif;' +
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'}' +
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'#imgbrowse li > span {' +
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'color: #666;' +
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'font-size: 15px;' +
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'display: block;' +
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'}' +
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'#imgbrowse li:hover {' +
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'background: #FFC;' +
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'cursor: pointer;' +
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'}' +
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'#imgbrowse iframe {' +
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'width: 100%;' +
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'height: 100%;' +
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'border: 0;' +
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'}'
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).appendTo('head');
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}
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};
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});
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