JQuery-图片剪裁
imageselect.jsp<%@ page contentType="text/html; charset=UTF-8" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><base href="http://localhost:8080/dojodemo/" /><title>剪裁</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><style type="text/css">em {background: url(http://static.l99.com/skin/default/images/miniblog/hover.png) no-repeat;width:180px;height:60px;position:absolute;top:-85px;left:-85px;text-align:center;padding: 10px 12px 10px;font-style:normal;z-index:2;display:none;}em button {background-color:#CCCCCC;border:1px solid #999999;color:#000000;cursor:pointer;font-size:12px;height:20px;width:50px;}.adelete{position:relative;}div.imgcutDiv {margin: 30px auto;width: 320px;text-align: center;}div.imgcutDiv a {margin:0 10px;float:left;}</style></head><body><div class="tagBt_down"><div class="con_title">剪裁头像</div><div class="con_fill"><div class="container"><p><img id="ferret" src="http://blog.btbbt.com/attachments/2008/07/1510243_200807062233495.jpg"alt="loading IMG ......"title="image select"style="float: left; margin-right: 10px;"/></p></div><div class="clear"></div> <div class="imgcutDiv"><form action="cutImg.action" method="post" id="cutImgForm"><input type="hidden" id="cutImageW"name="imgWidth" /><input type="hidden" id="cutImageH"name="imgHeight" /><input type="hidden" id="cutImageX"name="imgTop" /><input type="hidden" id="cutImageY"name="imgLeft" /><input type="hidden" value="avatars.id" name="avatarsId" /><a id="img_cut_fb" href="javascript:void(0);" class="bt_22">确认剪裁</a><a href="javascript:history.go(-1);" class="bt_2">取消剪裁</a></form></div></div></div><script type="text/javascript" src="js/jquery-1.2.6.pack.js?ver=20080814"></script><script type="text/javascript" src="js/jquery.imgareaselect-0.5.js?ver=20080913"></script><script type="text/javascript">var imageW = 537;var imageH = 681;function preview(img, selection){ showCut(selection.width,selection.height,selection.x1,selection.y1);}function showCut(w,h,x,y){var scaleX = 200 / w;var scaleY = 222 / h;$('#ferret + div > img').css({ width: Math.round(scaleX * imageW) + 'px', height: Math.round(scaleY * imageH) + 'px', marginLeft: '-' + Math.round(scaleX * x) + 'px', marginTop: '-' + Math.round(scaleY * y) + 'px' }); $('input#cutImageW').val(w);$('input#cutImageH').val(h);$('input#cutImageX').val(x);$('input#cutImageY').val(y);}$(document).ready(function () {$('<div><img src="http://blog.btbbt.com/attachments/2008/07/1510243_200807062233495.jpg" style="position: relative;" /></div>').css({ float: 'left', position: 'relative', overflow: 'hidden', width: '200px', height: '222px' }).insertAfter($('#ferret'));imageW = $('#ferret + div > img').width();imageH = $('#ferret + div > img').height();$("form > a#img_cut_fb").click(function(){ if(confirm('确任剪切吗？')){ alert("width: " + $('input#cutImageW').val() + "height: " + $('input#cutImageH').val() + "left: " + $('input#cutImageX').val() + "top: " + $('input#cutImageY').val()); }});});$(window).load(function () { $('img#ferret').imgAreaSelect({ selectionOpacity: 0,minWidth:90,minHeight:100,outerOpacity:'0.5', selectionColor: 'blue', aspectRatio:'9:10',x1: 10, y1: 10, x2: 100, y2: 110,onSelectChange: preview }); showCut(90,100,10,10); });</script></body></html>
jquery.imgareaselect-0.5.js
/* * imgAreaSelect jQuery plugin * version 0.5 * * Copyright (c) 2008 Michal Wojciechowski (odyniec.net) * * Dual licensed under the MIT (MIT-LICENSE.txt)* and GPL (GPL-LICENSE.txt) licenses. * * http://odyniec.net/projects/imgareaselect/ * */jQuery.imgAreaSelect = function (img, options) { var $area = jQuery('<div></div>'), $border1 = jQuery('<div></div>'), $border2 = jQuery('<div></div>'), $outLeft = jQuery('<div></div>'), $outTop = jQuery('<div></div>'), $outRight = jQuery('<div></div>'), $outBottom = jQuery('<div></div>'), left, top, imgOfs, imgWidth, imgHeight, parent, parOfs, adjusted, zIndex = 0, fixed, $p, startX, startY, moveX, moveY, resizeMargin = 10, resize = [ ], V = 0, H = 1, d, aspectRatio, x1, x2, y1, y2, x, y, selection = { x1: 0, y1: 0, x2: 0, y2: 0, width: 0, height: 0 }; var $a = $area.add($border1).add($border2); var $o = $outLeft.add($outTop).add($outRight).add($outBottom); function viewX(x) { return x + imgOfs.left + parent.scrollLeft - parOfs.left; } function viewY(y) { return y + imgOfs.top + parent.scrollTop - parOfs.top; } function selX(x) { return x - imgOfs.left - parent.scrollLeft + parOfs.left; } function selY(y) { return y - imgOfs.top - parent.scrollTop + parOfs.top; } function evX(event) { return event.pageX + parent.scrollLeft - parOfs.left; } function evY(event) { return event.pageY + parent.scrollTop - parOfs.top; } function adjust() { imgOfs = jQuery(img).offset(); imgWidth = jQuery(img).width(); imgHeight = jQuery(img).height(); parOfs = jQuery(parent).is('body') ? { left: 0, top: 0 } : jQuery(parent).offset(); left = viewX(0); top = viewY(0); } function update() { $a.css({ left: viewX(selection.x1) + 'px', top: viewY(selection.y1) + 'px', width: Math.max(selection.width - options.borderWidth * 2, 0) + 'px', height: Math.max(selection.height - options.borderWidth * 2, 0) + 'px' }); $outLeft.css({ left: left + 'px', top: top + 'px', width: selection.x1 + 'px', height: imgHeight + 'px' }); $outTop.css({ left: left + selection.x1 + 'px', top: top + 'px', width: selection.width + 'px', height: selection.y1 + 'px' }); $outRight.css({ left: left + selection.x2 + 'px', top: top + 'px', width: imgWidth - selection.x2 + 'px', height: imgHeight + 'px' }); $outBottom.css({ left: left + selection.x1 + 'px', top: top + selection.y2 + 'px', width: selection.width + 'px', height: imgHeight - selection.y2 + 'px' }); } function areaMouseMove(event) { if (!adjusted) { adjust(); adjusted = true; $a.one('mouseout', function () { adjusted = false; }); } x = selX(evX(event)) - selection.x1; y = selY(evY(event)) - selection.y1; resize = [ ]; if (options.resizable) { if (y <= resizeMargin) resize = 'n'; else if (y >= selection.height - resizeMargin) resize = 's'; if (x <= resizeMargin) resize = 'w'; else if (x >= selection.width - resizeMargin) resize = 'e'; } $border2.css('cursor', resize.length ? resize.join('') + '-resize' : options.movable ? 'move' : ''); } function areaMouseDown(event) { if (event.which != 1) return false; adjust(); if (options.resizable && resize.length > 0) { jQuery('body').css('cursor', resize.join('') + '-resize'); x1 = viewX(resize == 'w' ? selection.x2 : selection.x1); y1 = viewY(resize == 'n' ? selection.y2 : selection.y1); jQuery(document).mousemove(selectingMouseMove); $border2.unbind('mousemove', areaMouseMove); jQuery(document).one('mouseup', function () { resize = [ ]; jQuery('body').css('cursor', ''); if (options.autoHide) $a.add($o).hide(); options.onSelectEnd(img, selection); jQuery(document).unbind('mousemove', selectingMouseMove); $border2.mousemove(areaMouseMove); }); } else if (options.movable) { moveX = selection.x1 + left; moveY = selection.y1 + top; startX = evX(event); startY = evY(event); jQuery(document) .mousemove(movingMouseMove) .one('mouseup', function () { options.onSelectEnd(img, selection); jQuery(document).unbind('mousemove', movingMouseMove); }); } else jQuery(img).mousedown(event); return false; } function aspectRatioXY() { x2 = Math.max(left, Math.min(left + imgWidth, x1 + Math.abs(y2 - y1) * aspectRatio * (x2 > x1 ? 1 : -1))); y2 = Math.round(Math.max(top, Math.min(top + imgHeight, y1 + Math.abs(x2 - x1) / aspectRatio * (y2 > y1 ? 1 : -1)))); x2 = Math.round(x2); } function aspectRatioYX() { y2 = Math.max(top, Math.min(top + imgHeight, y1 + Math.abs(x2 - x1) / aspectRatio * (y2 > y1 ? 1 : -1))); x2 = Math.round(Math.max(left, Math.min(left + imgWidth, x1 + Math.abs(y2 - y1) * aspectRatio * (x2 > x1 ? 1 : -1)))); y2 = Math.round(y2); } function selectingMouseMove(event) { x2 = !resize.length || resize || aspectRatio ? evX(event) : viewX(selection.x2); y2 = !resize.length || resize || aspectRatio ? evY(event) : viewY(selection.y2); if (options.minWidth && Math.abs(x2 - x1) < options.minWidth) { x2 = x1 - options.minWidth * (x2 < x1 ? 1 : -1); if (x2 < left) x1 = left + options.minWidth; else if (x2 > left + imgWidth) x1 = left + imgWidth - options.minWidth; } if (options.minHeight && Math.abs(y2 - y1) < options.minHeight) { y2 = y1 - options.minHeight * (y2 < y1 ? 1 : -1); if (y2 < top) y1 = top + options.minHeight; else if (y2 > top + imgHeight) y1 = top + imgHeight - options.minHeight; } x2 = Math.max(left, Math.min(x2, left + imgWidth)); y2 = Math.max(top, Math.min(y2, top + imgHeight)); if (aspectRatio) if (Math.abs(x2 - x1) / aspectRatio > Math.abs(y2 - y1)) aspectRatioYX(); else aspectRatioXY(); if (options.maxWidth && Math.abs(x2 - x1) > options.maxWidth) { x2 = x1 - options.maxWidth * (x2 < x1 ? 1 : -1); if (aspectRatio) aspectRatioYX(); } if (options.maxHeight && Math.abs(y2 - y1) > options.maxHeight) { y2 = y1 - options.maxHeight * (y2 < y1 ? 1 : -1); if (aspectRatio) aspectRatioXY(); } selection.x1 = selX(Math.min(x1, x2)); selection.x2 = selX(Math.max(x1, x2)); selection.y1 = selY(Math.min(y1, y2)); selection.y2 = selY(Math.max(y1, y2)); selection.width = Math.abs(x2 - x1); selection.height = Math.abs(y2 - y1); update(); options.onSelectChange(img, selection); return false; } function movingMouseMove(event) { x1 = Math.max(left, Math.min(moveX + evX(event) - startX, left + imgWidth - selection.width)); y1 = Math.max(top, Math.min(moveY + evY(event) - startY, top + imgHeight - selection.height)); x2 = x1 + selection.width; y2 = y1 + selection.height; selection.x1 = selX(x1); selection.y1 = selY(y1); selection.x2 = selX(x2); selection.y2 = selY(y2); update(); options.onSelectChange(img, selection); event.preventDefault(); return false; } function imgMouseDown(event) { if (event.which != 1) return false; adjust(); selection.x1 = selection.x2 = selX(startX = x1 = x2 = evX(event)); selection.y1 = selection.y2 = selY(startY = y1 = y2 = evY(event)); selection.width = 0; selection.height = 0; resize = [ ]; update(); $a.add($o).show(); jQuery(document).mousemove(selectingMouseMove); $border2.unbind('mousemove', areaMouseMove); options.onSelectStart(img, selection); jQuery(document).one('mouseup', function () { if (options.autoHide) $a.add($o).hide(); options.onSelectEnd(img, selection); jQuery(document).unbind('mousemove', selectingMouseMove); $border2.mousemove(areaMouseMove); }); return false; } function windowResize() { adjust(); update(); } this.setOptions = function(newOptions) { options = jQuery.extend(options, newOptions); if (newOptions.x1 != null) { selection.x1 = newOptions.x1; selection.y1 = newOptions.y1; selection.x2 = newOptions.x2; selection.y2 = newOptions.y2; newOptions.show = true; } parent = jQuery(options.parent).get(0); adjust(); $p = jQuery(img); while ($p.length && !$p.is('body')) { if (!isNaN($p.css('z-index')) && $p.css('z-index') > zIndex) zIndex = $p.css('z-index'); if ($p.css('position') == 'fixed') fixed = true; $p = $p.parent(); } x1 = viewX(selection.x1); y1 = viewY(selection.y1); x2 = viewX(selection.x2); y2 = viewY(selection.y2); selection.width = x2 - x1; selection.height = y2 - y1; update(); if (newOptions.hide) $a.add($o).hide(); else if (newOptions.show) $a.add($o).show(); $o.addClass(options.classPrefix + '-outer'); $area.addClass(options.classPrefix + '-selection'); $border1.addClass(options.classPrefix + '-border1'); $border2.addClass(options.classPrefix + '-border2'); $a.css({ borderWidth: options.borderWidth + 'px' }); $area.css({ backgroundColor: options.selectionColor, opacity: options.selectionOpacity }); $border1.css({ borderStyle: 'solid', borderColor: options.borderColor1 }); $border2.css({ borderStyle: 'dashed', borderColor: options.borderColor2 }); $o.css({ opacity: options.outerOpacity, backgroundColor: options.outerColor }); aspectRatio = options.aspectRatio && (d = options.aspectRatio.split(/:/)) ? d / d : null; if (options.disable || options.enable === false) { $a.unbind('mousemove', areaMouseMove).unbind('mousedown', areaMouseDown); jQuery(img).add($o).unbind('mousedown', imgMouseDown); jQuery(window).unbind('resize', windowResize); } else if (options.enable || options.disable === false) { if (options.resizable || options.movable) $a.mousemove(areaMouseMove).mousedown(areaMouseDown); jQuery(img).add($o).mousedown(imgMouseDown); jQuery(window).resize(windowResize); } jQuery(options.parent).append($o.add($a)); options.enable = options.disable = undefined; }; if (jQuery.browser.msie) jQuery(img).attr('unselectable', 'on'); $a.add($o).css({ display: 'none', position: fixed ? 'fixed' : 'absolute', overflow: 'hidden', zIndex: zIndex > 0 ? zIndex : null }); $area.css({ borderStyle: 'solid' }); initOptions = { borderColor1: '#000', borderColor2: '#fff', borderWidth: 1, classPrefix: 'imgareaselect', movable: true, resizable: true, selectionColor: '#fff', selectionOpacity: 0.2, outerColor: '#000', outerOpacity: 0.2, parent: 'body', onSelectStart: function () {}, onSelectChange: function () {}, onSelectEnd: function () {} }; options = jQuery.extend(initOptions, options); this.setOptions(options);};jQuery.fn.imgAreaSelect = function (options) { options = options || {}; this.each(function () { if (jQuery(this).data('imgAreaSelect')) jQuery(this).data('imgAreaSelect').setOptions(options); else { if (options.enable === undefined && options.disable === undefined) options.enable = true; jQuery(this).data('imgAreaSelect', new jQuery.imgAreaSelect(this, options)); } }); return this;};
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