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/* global imageEditL10n, ajaxurl, confirm */ /** * @summary The functions necessary for editing images. * * @since 2.9.0 */ (function($) { /** * Contains all the methods to initialise and control the image editor. * * @namespace imageEdit */ var imageEdit = window.imageEdit = { iasapi : {}, hold : {}, postid : '', _view : false, /** * @summary Converts a value to an integer. * * @memberof imageEdit * @since 2.9.0 * * @param {number} f The float value that should be converted. * * @return {number} The integer representation from the float value. */ intval : function(f) { /* * Bitwise OR operator: one of the obscure ways to truncate floating point figures, * worth reminding JavaScript doesn't have a distinct "integer" type. */ return f | 0; }, /** * @summary Adds the disabled attribute and class to a single form element * or a field set. * * @memberof imageEdit * @since 2.9.0 * * @param {jQuery} el The element that should be modified. * @param {bool|number} s The state for the element. If set to true * the element is disabled, * otherwise the element is enabled. * The function is sometimes called with a 0 or 1 * instead of true or false. * * @returns {void} */ setDisabled : function( el, s ) { /* * `el` can be a single form element or a fieldset. Before #28864, the disabled state on * some text fields was handled targeting $('input', el). Now we need to handle the * disabled state on buttons too so we can just target `el` regardless if it's a single * element or a fieldset because when a fieldset is disabled, its descendants are disabled too. */ if ( s ) { el.removeClass( 'disabled' ).prop( 'disabled', false ); } else { el.addClass( 'disabled' ).prop( 'disabled', true ); } }, /** * @summary Initializes the image editor. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * * @returns {void} */ init : function(postid) { var t = this, old = $('#image-editor-' + t.postid), x = t.intval( $('#imgedit-x-' + postid).val() ), y = t.intval( $('#imgedit-y-' + postid).val() ); if ( t.postid !== postid && old.length ) { t.close(t.postid); } t.hold.w = t.hold.ow = x; t.hold.h = t.hold.oh = y; t.hold.xy_ratio = x / y; t.hold.sizer = parseFloat( $('#imgedit-sizer-' + postid).val() ); t.postid = postid; $('#imgedit-response-' + postid).empty(); $('input[type="text"]', '#imgedit-panel-' + postid).keypress(function(e) { var k = e.keyCode; // Key codes 37 thru 40 are the arrow keys. if ( 36 < k && k < 41 ) { $(this).blur(); } // The key code 13 is the enter key. if ( 13 === k ) { e.preventDefault(); e.stopPropagation(); return false; } }); }, /** * @summary Toggles the wait/load icon in the editor. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {number} toggle Is 0 or 1, fades the icon in then 1 and out when 0. * * @returns {void} */ toggleEditor : function(postid, toggle) { var wait = $('#imgedit-wait-' + postid); if ( toggle ) { wait.fadeIn( 'fast' ); } else { wait.fadeOut('fast'); } }, /** * @summary Shows or hides the image edit help box. * * @memberof imageEdit * @since 2.9.0 * * @param {HTMLElement} el The element to create the help window in. * * @returns {boolean} Always returns false. */ toggleHelp : function(el) { var $el = $( el ); $el .attr( 'aria-expanded', 'false' === $el.attr( 'aria-expanded' ) ? 'true' : 'false' ) .parents( '.imgedit-group-top' ).toggleClass( 'imgedit-help-toggled' ).find( '.imgedit-help' ).slideToggle( 'fast' ); return false; }, /** * @summary Gets the value from the image edit target. * * The image edit target contains the image sizes where the (possible) changes * have to be applied to. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * * @returns {string} The value from the imagedit-save-target input field when available, * or 'full' when not available. */ getTarget : function(postid) { return $('input[name="imgedit-target-' + postid + '"]:checked', '#imgedit-save-target-' + postid).val() || 'full'; }, /** * @summary Recalculates the height or width and keeps the original aspect ratio. * * If the original image size is exceeded a red exclamation mark is shown. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The current post id. * @param {number} x Is 0 when it applies the y-axis * and 1 when applicable for the x-axis. * @param {jQuery} el Element. * * @returns {void} */ scaleChanged : function( postid, x, el ) { var w = $('#imgedit-scale-width-' + postid), h = $('#imgedit-scale-height-' + postid), warn = $('#imgedit-scale-warn-' + postid), w1 = '', h1 = ''; if ( false === this.validateNumeric( el ) ) { return; } if ( x ) { h1 = ( w.val() !== '' ) ? Math.round( w.val() / this.hold.xy_ratio ) : ''; h.val( h1 ); } else { w1 = ( h.val() !== '' ) ? Math.round( h.val() * this.hold.xy_ratio ) : ''; w.val( w1 ); } if ( ( h1 && h1 > this.hold.oh ) || ( w1 && w1 > this.hold.ow ) ) { warn.css('visibility', 'visible'); } else { warn.css('visibility', 'hidden'); } }, /** * @summary Gets the selected aspect ratio. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * * @returns {string} The aspect ratio. */ getSelRatio : function(postid) { var x = this.hold.w, y = this.hold.h, X = this.intval( $('#imgedit-crop-width-' + postid).val() ), Y = this.intval( $('#imgedit-crop-height-' + postid).val() ); if ( X && Y ) { return X + ':' + Y; } if ( x && y ) { return x + ':' + y; } return '1:1'; }, /** * @summary Removes the last action from the image edit history * The history consist of (edit) actions performed on the image. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {number} setSize 0 or 1, when 1 the image resets to its original size. * * @returns {string} JSON string containing the history or an empty string if no history exists. */ filterHistory : function(postid, setSize) { // Apply undo state to history. var history = $('#imgedit-history-' + postid).val(), pop, n, o, i, op = []; if ( history !== '' ) { // Read the JSON string with the image edit history. history = JSON.parse(history); pop = this.intval( $('#imgedit-undone-' + postid).val() ); if ( pop > 0 ) { while ( pop > 0 ) { history.pop(); pop--; } } // Reset size to it's original state. if ( setSize ) { if ( !history.length ) { this.hold.w = this.hold.ow; this.hold.h = this.hold.oh; return ''; } // Restore original 'o'. o = history[history.length - 1]; // c = 'crop', r = 'rotate', f = 'flip' o = o.c || o.r || o.f || false; if ( o ) { // fw = Full image width this.hold.w = o.fw; // fh = Full image height this.hold.h = o.fh; } } // Filter the last step/action from the history. for ( n in history ) { i = history[n]; if ( i.hasOwnProperty('c') ) { op[n] = { 'c': { 'x': i.c.x, 'y': i.c.y, 'w': i.c.w, 'h': i.c.h } }; } else if ( i.hasOwnProperty('r') ) { op[n] = { 'r': i.r.r }; } else if ( i.hasOwnProperty('f') ) { op[n] = { 'f': i.f.f }; } } return JSON.stringify(op); } return ''; }, /** * @summary Binds the necessary events to the image. * * When the image source is reloaded the image will be reloaded. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {string} nonce The nonce to verify the request. * @param {function} callback Function to execute when the image is loaded. * * @returns {void} */ refreshEditor : function(postid, nonce, callback) { var t = this, data, img; t.toggleEditor(postid, 1); data = { 'action': 'imgedit-preview', '_ajax_nonce': nonce, 'postid': postid, 'history': t.filterHistory(postid, 1), 'rand': t.intval(Math.random() * 1000000) }; img = $( '<img id="image-preview-' + postid + '" alt="" />' ) .on( 'load', { history: data.history }, function( event ) { var max1, max2, parent = $( '#imgedit-crop-' + postid ), t = imageEdit, historyObj; // Checks if there already is some image-edit history. if ( '' !== event.data.history ) { historyObj = JSON.parse( event.data.history ); // If last executed action in history is a crop action. if ( historyObj[historyObj.length - 1].hasOwnProperty( 'c' ) ) { /* * A crop action has completed and the crop button gets disabled * ensure the undo button is enabled. */ t.setDisabled( $( '#image-undo-' + postid) , true ); // Move focus to the undo button to avoid a focus loss. $( '#image-undo-' + postid ).focus(); } } parent.empty().append(img); // w, h are the new full size dims max1 = Math.max( t.hold.w, t.hold.h ); max2 = Math.max( $(img).width(), $(img).height() ); t.hold.sizer = max1 > max2 ? max2 / max1 : 1; t.initCrop(postid, img, parent); t.setCropSelection(postid, 0); if ( (typeof callback !== 'undefined') && callback !== null ) { callback(); } if ( $('#imgedit-history-' + postid).val() && $('#imgedit-undone-' + postid).val() === '0' ) { $('input.imgedit-submit-btn', '#imgedit-panel-' + postid).removeAttr('disabled'); } else { $('input.imgedit-submit-btn', '#imgedit-panel-' + postid).prop('disabled', true); } t.toggleEditor(postid, 0); }) .on('error', function() { $('#imgedit-crop-' + postid).empty().append('<div class="error"><p>' + imageEditL10n.error + '</p></div>'); t.toggleEditor(postid, 0); }) .attr('src', ajaxurl + '?' + $.param(data)); }, /** * @summary Performs an image edit action. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {string} nonce The nonce to verify the request. * @param {string} action The action to perform on the image. * The possible actions are: "scale" and "restore". * * @returns {boolean|void} Executes a post request that refreshes the page * when the action is performed. * Returns false if a invalid action is given, * or when the action cannot be performed. */ action : function(postid, nonce, action) { var t = this, data, w, h, fw, fh; if ( t.notsaved(postid) ) { return false; } data = { 'action': 'image-editor', '_ajax_nonce': nonce, 'postid': postid }; if ( 'scale' === action ) { w = $('#imgedit-scale-width-' + postid), h = $('#imgedit-scale-height-' + postid), fw = t.intval(w.val()), fh = t.intval(h.val()); if ( fw < 1 ) { w.focus(); return false; } else if ( fh < 1 ) { h.focus(); return false; } if ( fw === t.hold.ow || fh === t.hold.oh ) { return false; } data['do'] = 'scale'; data.fwidth = fw; data.fheight = fh; } else if ( 'restore' === action ) { data['do'] = 'restore'; } else { return false; } t.toggleEditor(postid, 1); $.post(ajaxurl, data, function(r) { $('#image-editor-' + postid).empty().append(r); t.toggleEditor(postid, 0); // refresh the attachment model so that changes propagate if ( t._view ) { t._view.refresh(); } }); }, /** * @summary Stores the changes that are made to the image. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id to get the image from the database. * @param {string} nonce The nonce to verify the request. * * @returns {boolean|void} If the actions are successfully saved a response message is shown. * Returns false if there is no image editing history, * thus there are not edit-actions performed on the image. */ save : function(postid, nonce) { var data, target = this.getTarget(postid), history = this.filterHistory(postid, 0), self = this; if ( '' === history ) { return false; } this.toggleEditor(postid, 1); data = { 'action': 'image-editor', '_ajax_nonce': nonce, 'postid': postid, 'history': history, 'target': target, 'context': $('#image-edit-context').length ? $('#image-edit-context').val() : null, 'do': 'save' }; // Post the image edit data to the backend. $.post(ajaxurl, data, function(r) { // Read the response. var ret = JSON.parse(r); // If a response is returned, close the editor and show an error. if ( ret.error ) { $('#imgedit-response-' + postid).html('<div class="error"><p>' + ret.error + '</p></div>'); imageEdit.close(postid); return; } if ( ret.fw && ret.fh ) { $('#media-dims-' + postid).html( ret.fw + ' × ' + ret.fh ); } if ( ret.thumbnail ) { $('.thumbnail', '#thumbnail-head-' + postid).attr('src', ''+ret.thumbnail); } if ( ret.msg ) { $('#imgedit-response-' + postid).html('<div class="updated"><p>' + ret.msg + '</p></div>'); } if ( self._view ) { self._view.save(); } else { imageEdit.close(postid); } }); }, /** * @summary Creates the image edit window. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id for the image. * @param {string} nonce The nonce to verify the request. * @param {object} view The image editor view to be used for the editing. * * @returns {void|promise} Either returns void if the button was already activated * or returns an instance of the image editor, wrapped in a promise. */ open : function( postid, nonce, view ) { this._view = view; var dfd, data, elem = $('#image-editor-' + postid), head = $('#media-head-' + postid), btn = $('#imgedit-open-btn-' + postid), spin = btn.siblings('.spinner'); /* * Instead of disabling the button, which causes a focus loss and makes screen * readers announce "unavailable", return if the button was already clicked. */ if ( btn.hasClass( 'button-activated' ) ) { return; } spin.addClass( 'is-active' ); data = { 'action': 'image-editor', '_ajax_nonce': nonce, 'postid': postid, 'do': 'open' }; dfd = $.ajax({ url: ajaxurl, type: 'post', data: data, beforeSend: function() { btn.addClass( 'button-activated' ); } }).done(function( html ) { elem.html( html ); head.fadeOut('fast', function(){ elem.fadeIn('fast'); btn.removeClass( 'button-activated' ); spin.removeClass( 'is-active' ); }); // Initialise the Image Editor now that everything is ready. imageEdit.init( postid ); }); return dfd; }, /** * @summary Initializes the cropping tool and sets a default cropping selection. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * * @returns {void} */ imgLoaded : function(postid) { var img = $('#image-preview-' + postid), parent = $('#imgedit-crop-' + postid); // Ensure init has run even when directly loaded. if ( 'undefined' === typeof this.hold.sizer ) { this.init( postid ); } this.initCrop(postid, img, parent); this.setCropSelection(postid, 0); this.toggleEditor(postid, 0); // Editor is ready, move focus to the first focusable element. $( '.imgedit-wrap .imgedit-help-toggle' ).eq( 0 ).focus(); }, /** * @summary Initializes the cropping tool. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {HTMLElement} image The preview image. * @param {HTMLElement} parent The preview image container. * * @returns {void} */ initCrop : function(postid, image, parent) { var t = this, selW = $('#imgedit-sel-width-' + postid), selH = $('#imgedit-sel-height-' + postid), $img; t.iasapi = $(image).imgAreaSelect({ parent: parent, instance: true, handles: true, keys: true, minWidth: 3, minHeight: 3, /** * @summary Sets the CSS styles and binds events for locking the aspect ratio. * * @param {jQuery} img The preview image. */ onInit: function( img ) { // Ensure that the imgAreaSelect wrapper elements are position:absolute. // (even if we're in a position:fixed modal) $img = $( img ); $img.next().css( 'position', 'absolute' ) .nextAll( '.imgareaselect-outer' ).css( 'position', 'absolute' ); /** * @summary Binds mouse down event to the cropping container. * * @returns {void} */ parent.children().on( 'mousedown, touchstart', function(e){ var ratio = false, sel, defRatio; if ( e.shiftKey ) { sel = t.iasapi.getSelection(); defRatio = t.getSelRatio(postid); ratio = ( sel && sel.width && sel.height ) ? sel.width + ':' + sel.height : defRatio; } t.iasapi.setOptions({ aspectRatio: ratio }); }); }, /** * @summary Event triggered when starting a selection. * * @returns {void} */ onSelectStart: function() { imageEdit.setDisabled($('#imgedit-crop-sel-' + postid), 1); }, /** * @summary Event triggered when the selection is ended. * * @param {object} img jQuery object representing the image. * @param {object} c The selection. * * @returns {object} */ onSelectEnd: function(img, c) { imageEdit.setCropSelection(postid, c); }, /** * @summary Event triggered when the selection changes. * * @param {object} img jQuery object representing the image. * @param {object} c The selection. * * @returns {void} */ onSelectChange: function(img, c) { var sizer = imageEdit.hold.sizer; selW.val( imageEdit.round(c.width / sizer) ); selH.val( imageEdit.round(c.height / sizer) ); } }); }, /** * @summary Stores the current crop selection. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {object} c The selection. * * @returns {boolean} */ setCropSelection : function(postid, c) { var sel; c = c || 0; if ( !c || ( c.width < 3 && c.height < 3 ) ) { this.setDisabled($('.imgedit-crop', '#imgedit-panel-' + postid), 0); this.setDisabled($('#imgedit-crop-sel-' + postid), 0); $('#imgedit-sel-width-' + postid).val(''); $('#imgedit-sel-height-' + postid).val(''); $('#imgedit-selection-' + postid).val(''); return false; } sel = { 'x': c.x1, 'y': c.y1, 'w': c.width, 'h': c.height }; this.setDisabled($('.imgedit-crop', '#imgedit-panel-' + postid), 1); $('#imgedit-selection-' + postid).val( JSON.stringify(sel) ); }, /** * @summary Closes the image editor. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {bool} warn Warning message. * * @returns {void|bool} Returns false if there is a warning. */ close : function(postid, warn) { warn = warn || false; if ( warn && this.notsaved(postid) ) { return false; } this.iasapi = {}; this.hold = {}; // If we've loaded the editor in the context of a Media Modal, then switch to the previous view, // whatever that might have been. if ( this._view ){ this._view.back(); } // In case we are not accessing the image editor in the context of a View, close the editor the old-skool way else { $('#image-editor-' + postid).fadeOut('fast', function() { $( '#media-head-' + postid ).fadeIn( 'fast', function() { // Move focus back to the Edit Image button. Runs also when saving. $( '#imgedit-open-btn-' + postid ).focus(); }); $(this).empty(); }); } }, /** * @summary Checks if the image edit history is saved. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * * @returns {boolean} Returns true if the history is not saved. */ notsaved : function(postid) { var h = $('#imgedit-history-' + postid).val(), history = ( h !== '' ) ? JSON.parse(h) : [], pop = this.intval( $('#imgedit-undone-' + postid).val() ); if ( pop < history.length ) { if ( confirm( $('#imgedit-leaving-' + postid).html() ) ) { return false; } return true; } return false; }, /** * @summary Adds an image edit action to the history. * * @memberof imageEdit * @since 2.9.0 * * @param {object} op The original position. * @param {number} postid The post id. * @param {string} nonce The nonce. * * @returns {void} */ addStep : function(op, postid, nonce) { var t = this, elem = $('#imgedit-history-' + postid), history = ( elem.val() !== '' ) ? JSON.parse( elem.val() ) : [], undone = $( '#imgedit-undone-' + postid ), pop = t.intval( undone.val() ); while ( pop > 0 ) { history.pop(); pop--; } undone.val(0); // reset history.push(op); elem.val( JSON.stringify(history) ); t.refreshEditor(postid, nonce, function() { t.setDisabled($('#image-undo-' + postid), true); t.setDisabled($('#image-redo-' + postid), false); }); }, /** * @summary Rotates the image. * * @memberof imageEdit * @since 2.9.0 * * @param {string} angle The angle the image is rotated with. * @param {number} postid The post id. * @param {string} nonce The nonce. * @param {object} t The target element. * * @returns {boolean} */ rotate : function(angle, postid, nonce, t) { if ( $(t).hasClass('disabled') ) { return false; } this.addStep({ 'r': { 'r': angle, 'fw': this.hold.h, 'fh': this.hold.w }}, postid, nonce); }, /** * @summary Flips the image. * * @memberof imageEdit * @since 2.9.0 * * @param {number} axis The axle the image is flipped on. * @param {number} postid The post id. * @param {string} nonce The nonce. * @param {object} t The target element. * * @returns {boolean} */ flip : function (axis, postid, nonce, t) { if ( $(t).hasClass('disabled') ) { return false; } this.addStep({ 'f': { 'f': axis, 'fw': this.hold.w, 'fh': this.hold.h }}, postid, nonce); }, /** * @summary Crops the image. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {string} nonce The nonce. * @param {object} t The target object. * * @returns {void|boolean} Returns false if the crop button is disabled. */ crop : function (postid, nonce, t) { var sel = $('#imgedit-selection-' + postid).val(), w = this.intval( $('#imgedit-sel-width-' + postid).val() ), h = this.intval( $('#imgedit-sel-height-' + postid).val() ); if ( $(t).hasClass('disabled') || sel === '' ) { return false; } sel = JSON.parse(sel); if ( sel.w > 0 && sel.h > 0 && w > 0 && h > 0 ) { sel.fw = w; sel.fh = h; this.addStep({ 'c': sel }, postid, nonce); } }, /** * @summary Undoes an image edit action. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {string} nonce The nonce. * * @returns {void|false} Returns false if the undo button is disabled. */ undo : function (postid, nonce) { var t = this, button = $('#image-undo-' + postid), elem = $('#imgedit-undone-' + postid), pop = t.intval( elem.val() ) + 1; if ( button.hasClass('disabled') ) { return; } elem.val(pop); t.refreshEditor(postid, nonce, function() { var elem = $('#imgedit-history-' + postid), history = ( elem.val() !== '' ) ? JSON.parse( elem.val() ) : []; t.setDisabled($('#image-redo-' + postid), true); t.setDisabled(button, pop < history.length); // When undo gets disabled, move focus to the redo button to avoid a focus loss. if ( history.length === pop ) { $( '#image-redo-' + postid ).focus(); } }); }, /** * Reverts a undo action. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {string} nonce The nonce. * * @returns {void} */ redo : function(postid, nonce) { var t = this, button = $('#image-redo-' + postid), elem = $('#imgedit-undone-' + postid), pop = t.intval( elem.val() ) - 1; if ( button.hasClass('disabled') ) { return; } elem.val(pop); t.refreshEditor(postid, nonce, function() { t.setDisabled($('#image-undo-' + postid), true); t.setDisabled(button, pop > 0); // When redo gets disabled, move focus to the undo button to avoid a focus loss. if ( 0 === pop ) { $( '#image-undo-' + postid ).focus(); } }); }, /** * @summary Sets the selection for the height and width in pixels. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {jQuery} el The element containing the values. * * @returns {void|boolean} Returns false when the x or y value is lower than 1, * void when the value is not numeric or when the operation * is successful. */ setNumSelection : function( postid, el ) { var sel, elX = $('#imgedit-sel-width-' + postid), elY = $('#imgedit-sel-height-' + postid), x = this.intval( elX.val() ), y = this.intval( elY.val() ), img = $('#image-preview-' + postid), imgh = img.height(), imgw = img.width(), sizer = this.hold.sizer, x1, y1, x2, y2, ias = this.iasapi; if ( false === this.validateNumeric( el ) ) { return; } if ( x < 1 ) { elX.val(''); return false; } if ( y < 1 ) { elY.val(''); return false; } if ( x && y && ( sel = ias.getSelection() ) ) { x2 = sel.x1 + Math.round( x * sizer ); y2 = sel.y1 + Math.round( y * sizer ); x1 = sel.x1; y1 = sel.y1; if ( x2 > imgw ) { x1 = 0; x2 = imgw; elX.val( Math.round( x2 / sizer ) ); } if ( y2 > imgh ) { y1 = 0; y2 = imgh; elY.val( Math.round( y2 / sizer ) ); } ias.setSelection( x1, y1, x2, y2 ); ias.update(); this.setCropSelection(postid, ias.getSelection()); } }, /** * Rounds a number to a whole. * * @memberof imageEdit * @since 2.9.0 * * @param {number} num The number. * * @returns {number} The number rounded to a whole number. */ round : function(num) { var s; num = Math.round(num); if ( this.hold.sizer > 0.6 ) { return num; } s = num.toString().slice(-1); if ( '1' === s ) { return num - 1; } else if ( '9' === s ) { return num + 1; } return num; }, /** * Sets a locked aspect ratio for the selection. * * @memberof imageEdit * @since 2.9.0 * * @param {number} postid The post id. * @param {number} n The ratio to set. * @param {jQuery} el The element containing the values. * * @returns {void} */ setRatioSelection : function(postid, n, el) { var sel, r, x = this.intval( $('#imgedit-crop-width-' + postid).val() ), y = this.intval( $('#imgedit-crop-height-' + postid).val() ), h = $('#image-preview-' + postid).height(); if ( false === this.validateNumeric( el ) ) { return; } if ( x && y ) { this.iasapi.setOptions({ aspectRatio: x + ':' + y }); if ( sel = this.iasapi.getSelection(true) ) { r = Math.ceil( sel.y1 + ( ( sel.x2 - sel.x1 ) / ( x / y ) ) ); if ( r > h ) { r = h; if ( n ) { $('#imgedit-crop-height-' + postid).val(''); } else { $('#imgedit-crop-width-' + postid).val(''); } } this.iasapi.setSelection( sel.x1, sel.y1, sel.x2, r ); this.iasapi.update(); } } }, /** * Validates if a value in a jQuery.HTMLElement is numeric. * * @memberof imageEdit * @since 4.6 * * @param {jQuery} el The html element. * * @returns {void|boolean} Returns false if the value is not numeric, * void when it is. */ validateNumeric: function( el ) { if ( ! this.intval( $( el ).val() ) ) { $( el ).val( '' ); return false; } } }; })(jQuery);
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