Diff: STRATO-apps/wordpress_03/app/wp-includes/js/imgareaselect/jquery.imgareaselect.js
Keine Baseline-Datei – Diff nur gegen leer.
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/*
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* imgAreaSelect jQuery plugin
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* version 0.9.10-wp-6.2
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*
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* Copyright (c) 2008-2013 Michal Wojciechowski (odyniec.net)
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*
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* Dual licensed under the MIT (MIT-LICENSE.txt)
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* and GPL (GPL-LICENSE.txt) licenses.
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*
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* https://github.com/odyniec/imgareaselect
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*
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*/
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(function($) {
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/*
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* Math functions will be used extensively, so it's convenient to make a few
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* shortcuts
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*/
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var abs = Math.abs,
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max = Math.max,
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min = Math.min,
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floor = Math.floor;
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/**
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* Create a new HTML div element
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*
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* @return A jQuery object representing the new element
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*/
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function div() {
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return $('<div/>');
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}
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/**
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* imgAreaSelect initialization
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*
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* @param img
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* A HTML image element to attach the plugin to
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* @param options
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* An options object
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*/
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$.imgAreaSelect = function (img, options) {
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var
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/* jQuery object representing the image */
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$img = $(img),
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/* Has the image finished loading? */
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imgLoaded,
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/* Plugin elements */
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/* Container box */
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$box = div(),
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/* Selection area */
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$area = div(),
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/* Border (four divs) */
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$border = div().add(div()).add(div()).add(div()),
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/* Outer area (four divs) */
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$outer = div().add(div()).add(div()).add(div()),
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/* Handles (empty by default, initialized in setOptions()) */
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$handles = $([]),
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/*
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* Additional element to work around a cursor problem in Opera
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* (explained later)
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*/
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$areaOpera,
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/* Image position (relative to viewport) */
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left, top,
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/* Image offset (as returned by .offset()) */
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imgOfs = { left: 0, top: 0 },
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/* Image dimensions (as returned by .width() and .height()) */
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imgWidth, imgHeight,
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/*
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* jQuery object representing the parent element that the plugin
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* elements are appended to
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*/
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$parent,
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/* Parent element offset (as returned by .offset()) */
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parOfs = { left: 0, top: 0 },
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/* Base z-index for plugin elements */
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zIndex = 0,
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/* Plugin elements position */
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position = 'absolute',
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/* X/Y coordinates of the starting point for move/resize operations */
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startX, startY,
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+
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/* Horizontal and vertical scaling factors */
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scaleX, scaleY,
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/* Current resize mode ("nw", "se", etc.) */
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resize,
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/* Selection area constraints */
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minWidth, minHeight, maxWidth, maxHeight,
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/* Aspect ratio to maintain (floating point number) */
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aspectRatio,
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/* Are the plugin elements currently displayed? */
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shown,
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/* Current selection (relative to parent element) */
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x1, y1, x2, y2,
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/* Current selection (relative to scaled image) */
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selection = { x1: 0, y1: 0, x2: 0, y2: 0, width: 0, height: 0 },
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/* Document element */
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docElem = document.documentElement,
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/* User agent */
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ua = navigator.userAgent,
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/* Various helper variables used throughout the code */
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$p, d, i, o, w, h, adjusted;
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/*
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* Translate selection coordinates (relative to scaled image) to viewport
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* coordinates (relative to parent element)
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*/
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/**
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* Translate selection X to viewport X
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*
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* @param x
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* Selection X
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* @return Viewport X
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*/
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function viewX(x) {
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return x + imgOfs.left - parOfs.left;
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}
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/**
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* Translate selection Y to viewport Y
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*
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* @param y
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* Selection Y
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* @return Viewport Y
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*/
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function viewY(y) {
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return y + imgOfs.top - parOfs.top;
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}
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/*
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* Translate viewport coordinates to selection coordinates
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*/
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/**
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* Translate viewport X to selection X
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*
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* @param x
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* Viewport X
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* @return Selection X
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*/
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function selX(x) {
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return x - imgOfs.left + parOfs.left;
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}
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/**
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* Translate viewport Y to selection Y
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*
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* @param y
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* Viewport Y
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* @return Selection Y
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*/
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function selY(y) {
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return y - imgOfs.top + parOfs.top;
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}
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/*
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* Translate event coordinates (relative to document) to viewport
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* coordinates
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*/
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/**
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* Get event X and translate it to viewport X
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*
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* @param event
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* The event object
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* @return Viewport X
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*/
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function evX(event) {
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return max(event.pageX || 0, touchCoords(event).x) - parOfs.left;
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}
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/**
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* Get event Y and translate it to viewport Y
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*
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* @param event
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* The event object
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* @return Viewport Y
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*/
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function evY(event) {
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return max(event.pageY || 0, touchCoords(event).y) - parOfs.top;
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}
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/**
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* Get X and Y coordinates of a touch event
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*
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* @param event
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* The event object
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* @return Coordinates object
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*/
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function touchCoords(event) {
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var oev = event.originalEvent || {};
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if (oev.touches && oev.touches.length)
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return { x: oev.touches[0].pageX, y: oev.touches[0].pageY };
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else
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return { x: 0, y: 0 };
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}
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/**
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* Get the current selection
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*
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* @param noScale
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* If set to <code>true</code>, scaling is not applied to the
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* returned selection
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* @return Selection object
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*/
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function getSelection(noScale) {
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var sx = noScale || scaleX, sy = noScale || scaleY;
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return { x1: floor(selection.x1 * sx),
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y1: floor(selection.y1 * sy),
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x2: floor(selection.x2 * sx),
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y2: floor(selection.y2 * sy),
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width: floor(selection.x2 * sx) - floor(selection.x1 * sx),
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height: floor(selection.y2 * sy) - floor(selection.y1 * sy) };
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}
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/**
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* Set the current selection
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*
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* @param x1
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* X coordinate of the upper left corner of the selection area
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* @param y1
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* Y coordinate of the upper left corner of the selection area
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* @param x2
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* X coordinate of the lower right corner of the selection area
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* @param y2
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* Y coordinate of the lower right corner of the selection area
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* @param noScale
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* If set to <code>true</code>, scaling is not applied to the
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* new selection
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*/
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function setSelection(x1, y1, x2, y2, noScale) {
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var sx = noScale || scaleX, sy = noScale || scaleY;
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selection = {
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x1: floor(x1 / sx || 0),
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y1: floor(y1 / sy || 0),
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x2: floor(x2 / sx || 0),
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y2: floor(y2 / sy || 0)
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};
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selection.width = selection.x2 - selection.x1;
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selection.height = selection.y2 - selection.y1;
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}
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/**
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* Recalculate image and parent offsets
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*/
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function adjust() {
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/*
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* Do not adjust if image has not yet loaded or if width is not a
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* positive number. The latter might happen when imgAreaSelect is put
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* on a parent element which is then hidden.
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*/
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if (!imgLoaded || !$img.width())
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return;
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/*
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* Get image offset. The .offset() method returns float values, so they
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* need to be rounded.
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*/
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imgOfs = { left: floor($img.offset().left), top: floor($img.offset().top) };
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/* Get image dimensions */
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imgWidth = $img.innerWidth();
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imgHeight = $img.innerHeight();
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imgOfs.top += ($img.outerHeight() - imgHeight) >> 1;
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imgOfs.left += ($img.outerWidth() - imgWidth) >> 1;
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/* Set minimum and maximum selection area dimensions */
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minWidth = floor(options.minWidth / scaleX) || 0;
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minHeight = floor(options.minHeight / scaleY) || 0;
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maxWidth = floor(min(options.maxWidth / scaleX || 1<<24, imgWidth));
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maxHeight = floor(min(options.maxHeight / scaleY || 1<<24, imgHeight));
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/*
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* Workaround for jQuery 1.3.2 incorrect offset calculation, originally
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* observed in Safari 3. Firefox 2 is also affected.
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*/
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if ($().jquery == '1.3.2' && position == 'fixed' &&
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!docElem['getBoundingClientRect'])
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{
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imgOfs.top += max(document.body.scrollTop, docElem.scrollTop);
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imgOfs.left += max(document.body.scrollLeft, docElem.scrollLeft);
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}
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/* Determine parent element offset */
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parOfs = /absolute|relative/.test($parent.css('position')) ?
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{ left: floor($parent.offset().left) - $parent.scrollLeft(),
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top: floor($parent.offset().top) - $parent.scrollTop() } :
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position == 'fixed' ?
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{ left: $(document).scrollLeft(), top: $(document).scrollTop() } :
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{ left: 0, top: 0 };
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left = viewX(0);
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top = viewY(0);
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/*
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* Check if selection area is within image boundaries, adjust if
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* necessary
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*/
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if (selection.x2 > imgWidth || selection.y2 > imgHeight)
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doResize();
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}
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/**
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* Update plugin elements
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*
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* @param resetKeyPress
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* If set to <code>false</code>, this instance's keypress
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* event handler is not activated
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*/
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function update(resetKeyPress) {
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/* If plugin elements are hidden, do nothing */
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if (!shown) return;
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+
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/*
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* Set the position and size of the container box and the selection area
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* inside it
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*/
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$box.css({ left: viewX(selection.x1), top: viewY(selection.y1) })
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.add($area).width(w = selection.width).height(h = selection.height);
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/*
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* Reset the position of selection area, borders, and handles (IE6/IE7
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* position them incorrectly if we don't do this)
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*/
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$area.add($border).add($handles).css({ left: 0, top: 0 });
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/* Set border dimensions */
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$border
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.width(max(w - $border.outerWidth() + $border.innerWidth(), 0))
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.height(max(h - $border.outerHeight() + $border.innerHeight(), 0));
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+
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/* Arrange the outer area elements */
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$($outer[0]).css({ left: left, top: top,
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width: selection.x1, height: imgHeight });
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$($outer[1]).css({ left: left + selection.x1, top: top,
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width: w, height: selection.y1 });
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$($outer[2]).css({ left: left + selection.x2, top: top,
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width: imgWidth - selection.x2, height: imgHeight });
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$($outer[3]).css({ left: left + selection.x1, top: top + selection.y2,
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width: w, height: imgHeight - selection.y2 });
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+
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w -= $handles.outerWidth();
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h -= $handles.outerHeight();
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/* Arrange handles */
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switch ($handles.length) {
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case 8:
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$($handles[4]).css({ left: w >> 1 });
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$($handles[5]).css({ left: w, top: h >> 1 });
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$($handles[6]).css({ left: w >> 1, top: h });
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$($handles[7]).css({ top: h >> 1 });
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case 4:
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$handles.slice(1,3).css({ left: w });
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$handles.slice(2,4).css({ top: h });
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}
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if (resetKeyPress !== false) {
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/*
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* Need to reset the document keypress event handler -- unbind the
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* current handler
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*/
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if ($.imgAreaSelect.onKeyPress != docKeyPress)
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$(document).off($.imgAreaSelect.keyPress,
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$.imgAreaSelect.onKeyPress);
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+
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if (options.keys)
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/*
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* Set the document keypress event handler to this instance's
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* docKeyPress() function
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*/
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$(document).on( $.imgAreaSelect.keyPress, function() {
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$.imgAreaSelect.onKeyPress = docKeyPress;
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});
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}
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+
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/*
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* Internet Explorer displays 1px-wide dashed borders incorrectly by
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* filling the spaces between dashes with white. Toggling the margin
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* property between 0 and "auto" fixes this in IE6 and IE7 (IE8 is still
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* broken). This workaround is not perfect, as it requires setTimeout()
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* and thus causes the border to flicker a bit, but I haven't found a
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* better solution.
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*
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* Note: This only happens with CSS borders, set with the borderWidth,
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* borderOpacity, borderColor1, and borderColor2 options (which are now
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* deprecated). Borders created with GIF background images are fine.
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*/
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if (msie && $border.outerWidth() - $border.innerWidth() == 2) {
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$border.css('margin', 0);
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setTimeout(function () { $border.css('margin', 'auto'); }, 0);
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}
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}
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+
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/**
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* Do the complete update sequence: recalculate offsets, update the
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* elements, and set the correct values of x1, y1, x2, and y2.
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*
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* @param resetKeyPress
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* If set to <code>false</code>, this instance's keypress
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* event handler is not activated
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*/
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function doUpdate(resetKeyPress) {
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adjust();
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update(resetKeyPress);
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updateSelectionRelativeToParentElement();
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}
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+
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/**
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* Set the correct values of x1, y1, x2, and y2.
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*/
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function updateSelectionRelativeToParentElement() {
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x1 = viewX(selection.x1); y1 = viewY(selection.y1);
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x2 = viewX(selection.x2); y2 = viewY(selection.y2);
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}
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+
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/**
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* Hide or fade out an element (or multiple elements)
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*
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* @param $elem
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* A jQuery object containing the element(s) to hide/fade out
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* @param fn
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* Callback function to be called when fadeOut() completes
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*/
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function hide($elem, fn) {
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options.fadeSpeed ? $elem.fadeOut(options.fadeSpeed, fn) : $elem.hide();
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}
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+
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/**
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* Selection area mousemove event handler
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*
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* @param event
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* The event object
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*/
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function areaMouseMove(event) {
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var x = selX(evX(event)) - selection.x1,
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y = selY(evY(event)) - selection.y1;
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+
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if (!adjusted) {
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adjust();
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adjusted = true;
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+
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$box.one('mouseout', function () { adjusted = false; });
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}
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+
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/* Clear the resize mode */
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resize = '';
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+
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if (options.resizable) {
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/*
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* Check if the mouse pointer is over the resize margin area and set
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* the resize mode accordingly
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*/
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if (y <= options.resizeMargin)
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resize = 'n';
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else if (y >= selection.height - options.resizeMargin)
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resize = 's';
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if (x <= options.resizeMargin)
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resize += 'w';
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else if (x >= selection.width - options.resizeMargin)
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resize += 'e';
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}
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+
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$box.css('cursor', resize ? resize + '-resize' :
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options.movable ? 'move' : '');
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if ($areaOpera)
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$areaOpera.toggle();
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}
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+
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/**
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* Document mouseup event handler
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*
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* @param event
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* The event object
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*/
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function docMouseUp(event) {
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/* Set back the default cursor */
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$('body').css('cursor', '');
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/*
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* If autoHide is enabled, or if the selection has zero width/height,
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* hide the selection and the outer area
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*/
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if (options.autoHide || selection.width * selection.height == 0)
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hide($box.add($outer), function () { $(this).hide(); });
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+
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$(document).off('mousemove touchmove', selectingMouseMove);
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$box.on('mousemove touchmove', areaMouseMove);
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+
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options.onSelectEnd(img, getSelection());
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}
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+
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/**
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* Selection area mousedown event handler
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*
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* @param event
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* The event object
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* @return false
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*/
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function areaMouseDown(event) {
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if (event.type == 'mousedown' && event.which != 1) return false;
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+
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/*
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* With mobile browsers, there is no "moving the pointer over" action,
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* so we need to simulate one mousemove event happening prior to
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* mousedown/touchstart.
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*/
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areaMouseMove(event);
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+
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adjust();
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+
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if (resize) {
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/* Resize mode is in effect */
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$('body').css('cursor', resize + '-resize');
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+
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x1 = viewX(selection[/w/.test(resize) ? 'x2' : 'x1']);
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y1 = viewY(selection[/n/.test(resize) ? 'y2' : 'y1']);
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+
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$(document).on('mousemove touchmove', selectingMouseMove)
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.one('mouseup touchend', docMouseUp);
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$box.off('mousemove touchmove', areaMouseMove);
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}
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else if (options.movable) {
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startX = left + selection.x1 - evX(event);
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startY = top + selection.y1 - evY(event);
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+
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$box.off('mousemove touchmove', areaMouseMove);
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+
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$(document).on('mousemove touchmove', movingMouseMove)
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+
.one('mouseup touchend', function () {
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options.onSelectEnd(img, getSelection());
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+
559
+
$(document).off('mousemove touchmove', movingMouseMove);
560
+
$box.on('mousemove touchmove', areaMouseMove);
561
+
});
562
+
}
563
+
else
564
+
$img.mousedown(event);
565
+
566
+
return false;
567
+
}
568
+
569
+
/**
570
+
* Adjust the x2/y2 coordinates to maintain aspect ratio (if defined)
571
+
*
572
+
* @param xFirst
573
+
* If set to <code>true</code>, calculate x2 first. Otherwise,
574
+
* calculate y2 first.
575
+
*/
576
+
function fixAspectRatio(xFirst) {
577
+
if (aspectRatio)
578
+
if (xFirst) {
579
+
x2 = max(left, min(left + imgWidth,
580
+
x1 + abs(y2 - y1) * aspectRatio * (x2 > x1 || -1)));
581
+
y2 = floor(max(top, min(top + imgHeight,
582
+
y1 + abs(x2 - x1) / aspectRatio * (y2 > y1 || -1))));
583
+
x2 = floor(x2);
584
+
}
585
+
else {
586
+
y2 = max(top, min(top + imgHeight,
587
+
y1 + abs(x2 - x1) / aspectRatio * (y2 > y1 || -1)));
588
+
x2 = floor(max(left, min(left + imgWidth,
589
+
x1 + abs(y2 - y1) * aspectRatio * (x2 > x1 || -1))));
590
+
y2 = floor(y2);
591
+
}
592
+
}
593
+
594
+
/**
595
+
* Resize the selection area respecting the minimum/maximum dimensions and
596
+
* aspect ratio
597
+
*/
598
+
function doResize() {
599
+
/*
600
+
* Make sure x1, x2, y1, y2 are initialized to avoid the following calculation
601
+
* getting incorrect results.
602
+
*/
603
+
if ( x1 == null || x2 == null || y1 == null || y2 == null ) {
604
+
updateSelectionRelativeToParentElement();
605
+
}
606
+
607
+
/*
608
+
* Make sure the top left corner of the selection area stays within
609
+
* image boundaries (it might not if the image source was dynamically
610
+
* changed).
611
+
*/
612
+
x1 = min(x1, left + imgWidth);
613
+
y1 = min(y1, top + imgHeight);
614
+
615
+
if (abs(x2 - x1) < minWidth) {
616
+
/* Selection width is smaller than minWidth */
617
+
x2 = x1 - minWidth * (x2 < x1 || -1);
618
+
619
+
if (x2 < left)
620
+
x1 = left + minWidth;
621
+
else if (x2 > left + imgWidth)
622
+
x1 = left + imgWidth - minWidth;
623
+
}
624
+
625
+
if (abs(y2 - y1) < minHeight) {
626
+
/* Selection height is smaller than minHeight */
627
+
y2 = y1 - minHeight * (y2 < y1 || -1);
628
+
629
+
if (y2 < top)
630
+
y1 = top + minHeight;
631
+
else if (y2 > top + imgHeight)
632
+
y1 = top + imgHeight - minHeight;
633
+
}
634
+
635
+
x2 = max(left, min(x2, left + imgWidth));
636
+
y2 = max(top, min(y2, top + imgHeight));
637
+
638
+
fixAspectRatio(abs(x2 - x1) < abs(y2 - y1) * aspectRatio);
639
+
640
+
if (abs(x2 - x1) > maxWidth) {
641
+
/* Selection width is greater than maxWidth */
642
+
x2 = x1 - maxWidth * (x2 < x1 || -1);
643
+
fixAspectRatio();
644
+
}
645
+
646
+
if (abs(y2 - y1) > maxHeight) {
647
+
/* Selection height is greater than maxHeight */
648
+
y2 = y1 - maxHeight * (y2 < y1 || -1);
649
+
fixAspectRatio(true);
650
+
}
651
+
652
+
selection = { x1: selX(min(x1, x2)), x2: selX(max(x1, x2)),
653
+
y1: selY(min(y1, y2)), y2: selY(max(y1, y2)),
654
+
width: abs(x2 - x1), height: abs(y2 - y1) };
655
+
656
+
update();
657
+
658
+
options.onSelectChange(img, getSelection());
659
+
}
660
+
661
+
/**
662
+
* Mousemove event handler triggered when the user is selecting an area
663
+
*
664
+
* @param event
665
+
* The event object
666
+
* @return false
667
+
*/
668
+
function selectingMouseMove(event) {
669
+
x2 = /w|e|^$/.test(resize) || aspectRatio ? evX(event) : viewX(selection.x2);
670
+
y2 = /n|s|^$/.test(resize) || aspectRatio ? evY(event) : viewY(selection.y2);
671
+
672
+
doResize();
673
+
674
+
return false;
675
+
}
676
+
677
+
/**
678
+
* Move the selection area
679
+
*
680
+
* @param newX1
681
+
* New viewport X1
682
+
* @param newY1
683
+
* New viewport Y1
684
+
*/
685
+
function doMove(newX1, newY1) {
686
+
x2 = (x1 = newX1) + selection.width;
687
+
y2 = (y1 = newY1) + selection.height;
688
+
689
+
$.extend(selection, { x1: selX(x1), y1: selY(y1), x2: selX(x2),
690
+
y2: selY(y2) });
691
+
692
+
update();
693
+
694
+
options.onSelectChange(img, getSelection());
695
+
}
696
+
697
+
/**
698
+
* Mousemove event handler triggered when the selection area is being moved
699
+
*
700
+
* @param event
701
+
* The event object
702
+
* @return false
703
+
*/
704
+
function movingMouseMove(event) {
705
+
x1 = max(left, min(startX + evX(event), left + imgWidth - selection.width));
706
+
y1 = max(top, min(startY + evY(event), top + imgHeight - selection.height));
707
+
708
+
doMove(x1, y1);
709
+
710
+
event.preventDefault();
711
+
return false;
712
+
}
713
+
714
+
/**
715
+
* Start selection
716
+
*/
717
+
function startSelection() {
718
+
$(document).off('mousemove touchmove', startSelection);
719
+
adjust();
720
+
721
+
x2 = x1;
722
+
y2 = y1;
723
+
doResize();
724
+
725
+
resize = '';
726
+
727
+
if (!$outer.is(':visible'))
728
+
/* Show the plugin elements */
729
+
$box.add($outer).hide().fadeIn(options.fadeSpeed||0);
730
+
731
+
shown = true;
732
+
733
+
$(document).off('mouseup touchend', cancelSelection)
734
+
.on('mousemove touchmove', selectingMouseMove)
735
+
.one('mouseup touchend', docMouseUp);
736
+
$box.off('mousemove touchmove', areaMouseMove);
737
+
738
+
options.onSelectStart(img, getSelection());
739
+
}
740
+
741
+
/**
742
+
* Cancel selection
743
+
*/
744
+
function cancelSelection() {
745
+
$(document).off('mousemove touchmove', startSelection)
746
+
.off('mouseup touchend', cancelSelection);
747
+
hide($box.add($outer));
748
+
749
+
setSelection(selX(x1), selY(y1), selX(x1), selY(y1));
750
+
751
+
/* If this is an API call, callback functions should not be triggered */
752
+
if (!(this instanceof $.imgAreaSelect)) {
753
+
options.onSelectChange(img, getSelection());
754
+
options.onSelectEnd(img, getSelection());
755
+
}
756
+
}
757
+
758
+
/**
759
+
* Image mousedown event handler
760
+
*
761
+
* @param event
762
+
* The event object
763
+
* @return false
764
+
*/
765
+
function imgMouseDown(event) {
766
+
/* Ignore the event if animation is in progress */
767
+
if (event.which > 1 || $outer.is(':animated')) return false;
768
+
769
+
adjust();
770
+
startX = x1 = evX(event);
771
+
startY = y1 = evY(event);
772
+
773
+
/* Selection will start when the mouse is moved */
774
+
$(document).on({ 'mousemove touchmove': startSelection,
775
+
'mouseup touchend': cancelSelection });
776
+
777
+
return false;
778
+
}
779
+
780
+
/**
781
+
* Window resize event handler
782
+
*/
783
+
function windowResize() {
784
+
doUpdate(false);
785
+
}
786
+
787
+
/**
788
+
* Image load event handler. This is the final part of the initialization
789
+
* process.
790
+
*/
791
+
function imgLoad() {
792
+
imgLoaded = true;
793
+
794
+
/* Set options */
795
+
setOptions(options = $.extend({
796
+
classPrefix: 'imgareaselect',
797
+
movable: true,
798
+
parent: 'body',
799
+
resizable: true,
800
+
resizeMargin: 10,
801
+
onInit: function () {},
802
+
onSelectStart: function () {},
803
+
onSelectChange: function () {},
804
+
onSelectEnd: function () {}
805
+
}, options));
806
+
807
+
$box.add($outer).css({ visibility: '' });
808
+
809
+
if (options.show) {
810
+
shown = true;
811
+
adjust();
812
+
update();
813
+
$box.add($outer).hide().fadeIn(options.fadeSpeed||0);
814
+
}
815
+
816
+
/*
817
+
* Call the onInit callback. The setTimeout() call is used to ensure
818
+
* that the plugin has been fully initialized and the object instance is
819
+
* available (so that it can be obtained in the callback).
820
+
*/
821
+
setTimeout(function () { options.onInit(img, getSelection()); }, 0);
822
+
}
823
+
824
+
/**
825
+
* Document keypress event handler
826
+
*
827
+
* @param event
828
+
* The event object
829
+
* @return false
830
+
*/
831
+
var docKeyPress = function(event) {
832
+
var k = options.keys, d, t, key = event.keyCode;
833
+
834
+
d = !isNaN(k.alt) && (event.altKey || event.originalEvent.altKey) ? k.alt :
835
+
!isNaN(k.ctrl) && event.ctrlKey ? k.ctrl :
836
+
!isNaN(k.shift) && event.shiftKey ? k.shift :
837
+
!isNaN(k.arrows) ? k.arrows : 10;
838
+
839
+
if (k.arrows == 'resize' || (k.shift == 'resize' && event.shiftKey) ||
840
+
(k.ctrl == 'resize' && event.ctrlKey) ||
841
+
(k.alt == 'resize' && (event.altKey || event.originalEvent.altKey)))
842
+
{
843
+
/* Resize selection */
844
+
845
+
switch (key) {
846
+
case 37:
847
+
/* Left */
848
+
d = -d;
849
+
case 39:
850
+
/* Right */
851
+
t = max(x1, x2);
852
+
x1 = min(x1, x2);
853
+
x2 = max(t + d, x1);
854
+
fixAspectRatio();
855
+
break;
856
+
case 38:
857
+
/* Up */
858
+
d = -d;
859
+
case 40:
860
+
/* Down */
861
+
t = max(y1, y2);
862
+
y1 = min(y1, y2);
863
+
y2 = max(t + d, y1);
864
+
fixAspectRatio(true);
865
+
break;
866
+
default:
867
+
return;
868
+
}
869
+
870
+
doResize();
871
+
}
872
+
else {
873
+
/* Move selection */
874
+
875
+
x1 = min(x1, x2);
876
+
y1 = min(y1, y2);
877
+
878
+
switch (key) {
879
+
case 37:
880
+
/* Left */
881
+
doMove(max(x1 - d, left), y1);
882
+
break;
883
+
case 38:
884
+
/* Up */
885
+
doMove(x1, max(y1 - d, top));
886
+
break;
887
+
case 39:
888
+
/* Right */
889
+
doMove(x1 + min(d, imgWidth - selX(x2)), y1);
890
+
break;
891
+
case 40:
892
+
/* Down */
893
+
doMove(x1, y1 + min(d, imgHeight - selY(y2)));
894
+
break;
895
+
default:
896
+
return;
897
+
}
898
+
}
899
+
900
+
return false;
901
+
};
902
+
903
+
/**
904
+
* Apply style options to plugin element (or multiple elements)
905
+
*
906
+
* @param $elem
907
+
* A jQuery object representing the element(s) to style
908
+
* @param props
909
+
* An object that maps option names to corresponding CSS
910
+
* properties
911
+
*/
912
+
function styleOptions($elem, props) {
913
+
for (var option in props)
914
+
if (options[option] !== undefined)
915
+
$elem.css(props[option], options[option]);
916
+
}
917
+
918
+
/**
919
+
* Set plugin options
920
+
*
921
+
* @param newOptions
922
+
* The new options object
923
+
*/
924
+
function setOptions(newOptions) {
925
+
if (newOptions.parent)
926
+
($parent = $(newOptions.parent)).append($box.add($outer));
927
+
928
+
/* Merge the new options with the existing ones */
929
+
$.extend(options, newOptions);
930
+
931
+
adjust();
932
+
933
+
if (newOptions.handles != null) {
934
+
/* Recreate selection area handles */
935
+
$handles.remove();
936
+
$handles = $([]);
937
+
938
+
i = newOptions.handles ? newOptions.handles == 'corners' ? 4 : 8 : 0;
939
+
940
+
while (i--)
941
+
$handles = $handles.add(div());
942
+
943
+
/* Add a class to handles and set the CSS properties */
944
+
$handles.addClass(options.classPrefix + '-handle').css({
945
+
position: 'absolute',
946
+
/*
947
+
* The font-size property needs to be set to zero, otherwise
948
+
* Internet Explorer makes the handles too large
949
+
*/
950
+
fontSize: '0',
951
+
zIndex: zIndex + 1 || 1
952
+
});
953
+
954
+
/*
955
+
* If handle width/height has not been set with CSS rules, set the
956
+
* default 5px
957
+
*/
958
+
if (!parseInt($handles.css('width')) >= 0)
959
+
$handles.width(10).height(10);
960
+
961
+
/*
962
+
* If the borderWidth option is in use, add a solid border to
963
+
* handles
964
+
*/
965
+
if (o = options.borderWidth)
966
+
$handles.css({ borderWidth: o, borderStyle: 'solid' });
967
+
968
+
/* Apply other style options */
969
+
styleOptions($handles, { borderColor1: 'border-color',
970
+
borderColor2: 'background-color',
971
+
borderOpacity: 'opacity' });
972
+
}
973
+
974
+
/* Calculate scale factors */
975
+
scaleX = options.imageWidth / imgWidth || 1;
976
+
scaleY = options.imageHeight / imgHeight || 1;
977
+
978
+
/* Set selection */
979
+
if (newOptions.x1 != null) {
980
+
setSelection(newOptions.x1, newOptions.y1, newOptions.x2,
981
+
newOptions.y2);
982
+
newOptions.show = !newOptions.hide;
983
+
}
984
+
985
+
if (newOptions.keys)
986
+
/* Enable keyboard support */
987
+
options.keys = $.extend({ shift: 1, ctrl: 'resize' },
988
+
newOptions.keys);
989
+
990
+
/* Add classes to plugin elements */
991
+
$outer.addClass(options.classPrefix + '-outer');
992
+
$area.addClass(options.classPrefix + '-selection');
993
+
for (i = 0; i++ < 4;)
994
+
$($border[i-1]).addClass(options.classPrefix + '-border' + i);
995
+
996
+
/* Apply style options */
997
+
styleOptions($area, { selectionColor: 'background-color',
998
+
selectionOpacity: 'opacity' });
999
+
styleOptions($border, { borderOpacity: 'opacity',
1000
+
borderWidth: 'border-width' });
1001
+
styleOptions($outer, { outerColor: 'background-color',
1002
+
outerOpacity: 'opacity' });
1003
+
if (o = options.borderColor1)
1004
+
$($border[0]).css({ borderStyle: 'solid', borderColor: o });
1005
+
if (o = options.borderColor2)
1006
+
$($border[1]).css({ borderStyle: 'dashed', borderColor: o });
1007
+
1008
+
/* Append all the selection area elements to the container box */
1009
+
$box.append($area.add($border).add($areaOpera)).append($handles);
1010
+
1011
+
if (msie) {
1012
+
if (o = ($outer.css('filter')||'').match(/opacity=(\d+)/))
1013
+
$outer.css('opacity', o[1]/100);
1014
+
if (o = ($border.css('filter')||'').match(/opacity=(\d+)/))
1015
+
$border.css('opacity', o[1]/100);
1016
+
}
1017
+
1018
+
if (newOptions.hide)
1019
+
hide($box.add($outer));
1020
+
else if (newOptions.show && imgLoaded) {
1021
+
shown = true;
1022
+
$box.add($outer).fadeIn(options.fadeSpeed||0);
1023
+
doUpdate();
1024
+
}
1025
+
1026
+
/* Calculate the aspect ratio factor */
1027
+
aspectRatio = (d = (options.aspectRatio || '').split(/:/))[0] / d[1];
1028
+
1029
+
$img.add($outer).off('mousedown', imgMouseDown);
1030
+
1031
+
if (options.disable || options.enable === false) {
1032
+
/* Disable the plugin */
1033
+
$box.off({ 'mousemove touchmove': areaMouseMove,
1034
+
'mousedown touchstart': areaMouseDown });
1035
+
$(window).off('resize', windowResize);
1036
+
}
1037
+
else {
1038
+
if (options.enable || options.disable === false) {
1039
+
/* Enable the plugin */
1040
+
if (options.resizable || options.movable)
1041
+
$box.on({ 'mousemove touchmove': areaMouseMove,
1042
+
'mousedown touchstart': areaMouseDown });
1043
+
1044
+
$(window).on( 'resize', windowResize);
1045
+
}
1046
+
1047
+
if (!options.persistent)
1048
+
$img.add($outer).on('mousedown touchstart', imgMouseDown);
1049
+
}
1050
+
1051
+
options.enable = options.disable = undefined;
1052
+
}
1053
+
1054
+
/**
1055
+
* Remove plugin completely
1056
+
*/
1057
+
this.remove = function () {
1058
+
/*
1059
+
* Call setOptions with { disable: true } to unbind the event handlers
1060
+
*/
1061
+
setOptions({ disable: true });
1062
+
$box.add($outer).remove();
1063
+
};
1064
+
1065
+
/*
1066
+
* Public API
1067
+
*/
1068
+
1069
+
/**
1070
+
* Get current options
1071
+
*
1072
+
* @return An object containing the set of options currently in use
1073
+
*/
1074
+
this.getOptions = function () { return options; };
1075
+
1076
+
/**
1077
+
* Set plugin options
1078
+
*
1079
+
* @param newOptions
1080
+
* The new options object
1081
+
*/
1082
+
this.setOptions = setOptions;
1083
+
1084
+
/**
1085
+
* Get the current selection
1086
+
*
1087
+
* @param noScale
1088
+
* If set to <code>true</code>, scaling is not applied to the
1089
+
* returned selection
1090
+
* @return Selection object
1091
+
*/
1092
+
this.getSelection = getSelection;
1093
+
1094
+
/**
1095
+
* Set the current selection
1096
+
*
1097
+
* @param x1
1098
+
* X coordinate of the upper left corner of the selection area
1099
+
* @param y1
1100
+
* Y coordinate of the upper left corner of the selection area
1101
+
* @param x2
1102
+
* X coordinate of the lower right corner of the selection area
1103
+
* @param y2
1104
+
* Y coordinate of the lower right corner of the selection area
1105
+
* @param noScale
1106
+
* If set to <code>true</code>, scaling is not applied to the
1107
+
* new selection
1108
+
*/
1109
+
this.setSelection = setSelection;
1110
+
1111
+
/**
1112
+
* Cancel selection
1113
+
*/
1114
+
this.cancelSelection = cancelSelection;
1115
+
1116
+
/**
1117
+
* Update plugin elements
1118
+
*
1119
+
* @param resetKeyPress
1120
+
* If set to <code>false</code>, this instance's keypress
1121
+
* event handler is not activated
1122
+
*/
1123
+
this.update = doUpdate;
1124
+
1125
+
/* Do the dreaded browser detection */
1126
+
var msie = (/msie ([\w.]+)/i.exec(ua)||[])[1],
1127
+
opera = /opera/i.test(ua),
1128
+
safari = /webkit/i.test(ua) && !/chrome/i.test(ua);
1129
+
1130
+
/*
1131
+
* Traverse the image's parent elements (up to <body>) and find the
1132
+
* highest z-index
1133
+
*/
1134
+
$p = $img;
1135
+
1136
+
while ($p.length) {
1137
+
zIndex = max(zIndex,
1138
+
!isNaN($p.css('z-index')) ? $p.css('z-index') : zIndex);
1139
+
/* Also check if any of the ancestor elements has fixed position */
1140
+
if ($p.css('position') == 'fixed')
1141
+
position = 'fixed';
1142
+
1143
+
$p = $p.parent(':not(body)');
1144
+
}
1145
+
1146
+
/*
1147
+
* If z-index is given as an option, it overrides the one found by the
1148
+
* above loop
1149
+
*/
1150
+
zIndex = options.zIndex || zIndex;
1151
+
1152
+
if (msie)
1153
+
$img.attr('unselectable', 'on');
1154
+
1155
+
/*
1156
+
* In MSIE and WebKit, we need to use the keydown event instead of keypress
1157
+
*/
1158
+
$.imgAreaSelect.keyPress = msie || safari ? 'keydown' : 'keypress';
1159
+
1160
+
/*
1161
+
* There is a bug affecting the CSS cursor property in Opera (observed in
1162
+
* versions up to 10.00) that prevents the cursor from being updated unless
1163
+
* the mouse leaves and enters the element again. To trigger the mouseover
1164
+
* event, we're adding an additional div to $box and we're going to toggle
1165
+
* it when mouse moves inside the selection area.
1166
+
*/
1167
+
if (opera)
1168
+
$areaOpera = div().css({ width: '100%', height: '100%',
1169
+
position: 'absolute', zIndex: zIndex + 2 || 2 });
1170
+
1171
+
/*
1172
+
* We initially set visibility to "hidden" as a workaround for a weird
1173
+
* behaviour observed in Google Chrome 1.0.154.53 (on Windows XP). Normally
1174
+
* we would just set display to "none", but, for some reason, if we do so
1175
+
* then Chrome refuses to later display the element with .show() or
1176
+
* .fadeIn().
1177
+
*/
1178
+
$box.add($outer).css({ visibility: 'hidden', position: position,
1179
+
overflow: 'hidden', zIndex: zIndex || '0' });
1180
+
$box.css({ zIndex: zIndex + 2 || 2 });
1181
+
$area.add($border).css({ position: 'absolute', fontSize: '0' });
1182
+
1183
+
/*
1184
+
* If the image has been fully loaded, or if it is not really an image (eg.
1185
+
* a div), call imgLoad() immediately; otherwise, bind it to be called once
1186
+
* on image load event.
1187
+
*/
1188
+
img.complete || img.readyState == 'complete' || !$img.is('img') ?
1189
+
imgLoad() : $img.one('load', imgLoad);
1190
+
1191
+
/*
1192
+
* MSIE 9.0 doesn't always fire the image load event -- resetting the src
1193
+
* attribute seems to trigger it. The check is for version 7 and above to
1194
+
* accommodate for MSIE 9 running in compatibility mode.
1195
+
*/
1196
+
if (!imgLoaded && msie && msie >= 7)
1197
+
img.src = img.src;
1198
+
};
1199
+
1200
+
/**
1201
+
* Invoke imgAreaSelect on a jQuery object containing the image(s)
1202
+
*
1203
+
* @param options
1204
+
* Options object
1205
+
* @return The jQuery object or a reference to imgAreaSelect instance (if the
1206
+
* <code>instance</code> option was specified)
1207
+
*/
1208
+
$.fn.imgAreaSelect = function (options) {
1209
+
options = options || {};
1210
+
1211
+
this.each(function () {
1212
+
/* Is there already an imgAreaSelect instance bound to this element? */
1213
+
if ($(this).data('imgAreaSelect')) {
1214
+
/* Yes there is -- is it supposed to be removed? */
1215
+
if (options.remove) {
1216
+
/* Remove the plugin */
1217
+
$(this).data('imgAreaSelect').remove();
1218
+
$(this).removeData('imgAreaSelect');
1219
+
}
1220
+
else
1221
+
/* Reset options */
1222
+
$(this).data('imgAreaSelect').setOptions(options);
1223
+
}
1224
+
else if (!options.remove) {
1225
+
/* No exising instance -- create a new one */
1226
+
1227
+
/*
1228
+
* If neither the "enable" nor the "disable" option is present, add
1229
+
* "enable" as the default
1230
+
*/
1231
+
if (options.enable === undefined && options.disable === undefined)
1232
+
options.enable = true;
1233
+
1234
+
$(this).data('imgAreaSelect', new $.imgAreaSelect(this, options));
1235
+
}
1236
+
});
1237
+
1238
+
if (options.instance)
1239
+
/*
1240
+
* Return the imgAreaSelect instance bound to the first element in the
1241
+
* set
1242
+
*/
1243
+
return $(this).data('imgAreaSelect');
1244
+
1245
+
return this;
1246
+
};
1247
+
1248
+
})(jQuery);
1249
+