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jquery支持图片连续裁剪插件

所属分类: 网页特效-图片特效&上传    2024-10-30 09:59:52

jquery支持图片连续裁剪插件 ie兼容11
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jquery支持图片连续裁剪插件(共6个文件)

    • index.html

使用方法

  • code
  • source
  1. var r;
  2. var move_offset=40;
  3. (function (factory) {
  4. if (typeof define === 'function' && define.amd) {
  5. define(['jquery'], factory);
  6. } else {
  7. factory(jQuery);
  8. }
  9. }(function ($) {
  10. var cropbox = function(options, el){
  11. var el = el || $(options.imageBox),
  12. obj =
  13. {
  14. state : {},
  15. ratio : 1,
  16. options : options,
  17. imageBox : el,
  18. thumbBox : el.find(options.thumbBox),
  19. spinner : el.find(options.spinner),
  20. image : new Image(),
  21. getDataURL: function ()
  22. {
  23. //1.设偏移量
  24. let coor_offset=200;//坐标轴偏移量
  25. // let p_offset_x=15;
  26. // let p_offset_y=18;
  27. //2.获取属性变量
  28. let le=$(".thumbBox").css("left").replace("px",".");
  29. let le2=le.substr(0,le.indexOf("."));
  30. let top=$(".thumbBox").css("top").replace("px",".")
  31. let top2=top.substr(0,top.indexOf("."));
  32. //3.获取截图框的x,y坐标
  33. let x,y,x2,y2,p_offset_x,p_offset_y;
  34. var width = this.thumbBox.width(),
  35. height = this.thumbBox.height(),
  36. canvas = document.createElement("canvas"),
  37. dim = el.css('background-position').split(' '),
  38. size = el.css('background-size').split(' '),
  39. //dx = parseInt(dim[0]) - el.width()/2 + width/2,
  40. //dy = parseInt(dim[1]) - el.height()/2 + height/2,
  41. dw = parseInt(size[0]),
  42. dh = parseInt(size[1]),
  43. sh = parseInt(this.image.height),
  44. sw = parseInt(this.image.width);
  45. if(dw>width || dh>height){
  46. x=le2-coor_offset;
  47. y=top2-coor_offset;
  48. x=x/r;
  49. y=y/r;
  50. x2=parseInt(dim[0])-100;
  51. y2=parseInt(dim[1])-100;
  52. }else{
  53. p_offset_x=15;
  54. p_offset_y=18;
  55. x=le2-coor_offset;
  56. y=top2-coor_offset
  57. x=x*r-p_offset_x;
  58. y=y*r-p_offset_y;
  59. x2=(parseInt(dim[0])-100)*r-p_offset_x;//100为margin
  60. y2=(parseInt(dim[1])-100)*r-p_offset_y;
  61. }
  62. //console.log(x2);
  63. //console.log(y2);
  64. canvas.width = width;
  65. canvas.height = height;
  66. var context = canvas.getContext("2d");
  67. //context.drawImage(this.image, -170, -150, sw, sh, dx, dy, dw, dh);
  68. context.drawImage(this.image, x, y, sw, sh, x2, y2, dw, dh);
  69. var imageData = canvas.toDataURL('image/png');
  70. return imageData;
  71. },
  72. getBlob: function()
  73. {
  74. var imageData = this.getDataURL();
  75. var b64 = imageData.replace('data:image/png;base64,','');
  76. var binary = atob(b64);
  77. var array = [];
  78. for (var i = 0; i < binary.length; i++) { array.push(binary.charCodeAt(i)); } return new Blob([new Uint8Array(array)], {type: 'image/png'}); }, zoomIn: function () { this.ratio*=1.1; setBackground(); }, zoomOut: function () { this.ratio*=0.9; setBackground(); } }, setBackground = function() { var w = parseInt(obj.image.width)*obj.ratio; var h = parseInt(obj.image.height)*obj.ratio; r=obj.ratio; var pw = (el.width() - w) / 2; var ph = (el.height() - h) / 2; el.css({ 'background-image': 'url(' + obj.image.src + ')', 'background-size': w +'px ' + h + 'px', 'background-position': pw + 'px ' + ph + 'px', 'background-repeat': 'no-repeat'}); }, imgMouseDown = function(e) { e.stopImmediatePropagation(); obj.state.dragable = true; obj.state.mouseX = e.clientX; obj.state.mouseY = e.clientY; }, imgMouseMove = function(e) { e.stopImmediatePropagation(); if (obj.state.dragable) { var x = e.clientX - obj.state.mouseX; var y = e.clientY - obj.state.mouseY; var bg = el.css('background-position').split(' '); var bgX = x + parseInt(bg[0]); var bgY = y + parseInt(bg[1]); el.css('background-position', bgX +'px ' + bgY + 'px'); obj.state.mouseX = e.clientX; obj.state.mouseY = e.clientY; } }, imgMouseUp = function(e) { e.stopImmediatePropagation(); obj.state.dragable = false; }, zoomImage = function(e) { e.originalEvent.wheelDelta > 0 || e.originalEvent.detail < 0 ? obj.ratio*=1.1 : obj.ratio*=0.9; setBackground(); } obj.spinner.show(); obj.image.onload = function() { obj.spinner.hide(); setBackground(); //el.bind('mousedown', imgMouseDown); //el.bind('mousemove', imgMouseMove); //$(window).bind('mouseup', imgMouseUp); el.bind('mousewheel DOMMouseScroll', zoomImage); }; obj.image.src = options.imgSrc; //el.on('remove', function(){$(window).unbind('mouseup', imgMouseUp)}); return obj; }; jQuery.fn.cropbox = function(options){ return new cropbox(options, this); }; })); $(function() { $(document).mousemove(function(e) { if (!!this.move) { var posix = !document.move_target ? {'x': 0, 'y': 0} : document.move_target.posix, callback = document.call_down || function() { $(this.move_target).css({ 'top': e.pageY - posix.y+move_offset, 'left': e.pageX - posix.x-move_offset }); }; callback.call(this, e, posix); } }).mouseup(function(e) { if (!!this.move) { var callback = document.call_up || function(){}; callback.call(this, e); $.extend(this, { 'move': false, 'move_target': null, 'call_down': false, 'call_up': false }); } }); var $box = $('.thumbBox').mousedown(function(e) { var offset = $(this).offset(); this.posix = {'x': e.pageX - offset.left, 'y': e.pageY - offset.top}; $.extend(document, {'move': true, 'move_target': this}); }).on('mousedown', '#coor', function(e) { var posix = { 'w': $box.width(), 'h': $box.height(), 'x': e.pageX, 'y': e.pageY }; $.extend(document, {'move': true, 'call_down': function(e) { wa=Math.max(30, e.pageX - posix.x + posix.w); ha=Math.max(30, e.pageY - posix.y + posix.h); $box.css({ 'width': wa, 'height': ha }); }}); return false; }); });
var r;
var move_offset=40;
(function (factory) {
    if (typeof define === 'function' && define.amd) {
        define(['jquery'], factory);
    } else {
        factory(jQuery);
    }
}(function ($) {
    var cropbox = function(options, el){
        var el = el || $(options.imageBox),
            obj =
            {
                state : {},
                ratio : 1,
                options : options,
                imageBox : el,
                thumbBox : el.find(options.thumbBox),
                spinner : el.find(options.spinner),
                image : new Image(),
                getDataURL: function ()
                {
                    //1.设偏移量
                    let coor_offset=200;//坐标轴偏移量
//                  let p_offset_x=15;
//                  let p_offset_y=18;
                    //2.获取属性变量
                    let le=$(".thumbBox").css("left").replace("px",".");
                    let le2=le.substr(0,le.indexOf("."));
                    let top=$(".thumbBox").css("top").replace("px",".")
                    let top2=top.substr(0,top.indexOf("."));
                       //3.获取截图框的x,y坐标
                       let x,y,x2,y2,p_offset_x,p_offset_y;
                       
                    var width = this.thumbBox.width(),
                        height = this.thumbBox.height(),
                        canvas = document.createElement("canvas"),
                        dim = el.css('background-position').split(' '),
                        size = el.css('background-size').split(' '),
                        //dx = parseInt(dim[0]) - el.width()/2 + width/2,
                        //dy = parseInt(dim[1]) - el.height()/2 + height/2,
                        dw = parseInt(size[0]),
                        dh = parseInt(size[1]),
                        sh = parseInt(this.image.height),
                        sw = parseInt(this.image.width);
                        
                        if(dw>width || dh>height){
                            x=le2-coor_offset;
                            y=top2-coor_offset;
                            x=x/r;
                               y=y/r;
                               x2=parseInt(dim[0])-100;
                               y2=parseInt(dim[1])-100;
                        }else{
                            p_offset_x=15;
                            p_offset_y=18;
                            x=le2-coor_offset;
                            y=top2-coor_offset
                            x=x*r-p_offset_x;
                               y=y*r-p_offset_y;
                            x2=(parseInt(dim[0])-100)*r-p_offset_x;//100为margin
                               y2=(parseInt(dim[1])-100)*r-p_offset_y;
                        }
                        
                    //console.log(x2);
                       //console.log(y2);
                    canvas.width = width;
                    canvas.height = height;
                    var context = canvas.getContext("2d");
                       //context.drawImage(this.image, -170, -150, sw, sh, dx, dy, dw, dh);
                       context.drawImage(this.image, x, y, sw, sh, x2, y2, dw, dh);
                    var imageData = canvas.toDataURL('image/png');
                    return imageData;
                },
                getBlob: function()
                {
                    var imageData = this.getDataURL();
                    var b64 = imageData.replace('data:image/png;base64,','');
                    var binary = atob(b64);
                    var array = [];
                    for (var i = 0; i < binary.length; i++) { array.push(binary.charCodeAt(i)); } return new Blob([new Uint8Array(array)], {type: 'image/png'}); }, zoomIn: function () { this.ratio*=1.1; setBackground(); }, zoomOut: function () { this.ratio*=0.9; setBackground(); } }, setBackground = function() { var w = parseInt(obj.image.width)*obj.ratio; var h = parseInt(obj.image.height)*obj.ratio; r=obj.ratio; var pw = (el.width() - w) / 2; var ph = (el.height() - h) / 2; el.css({ 'background-image': 'url(' + obj.image.src + ')', 'background-size': w +'px ' + h + 'px', 'background-position': pw + 'px ' + ph + 'px', 'background-repeat': 'no-repeat'}); }, imgMouseDown = function(e) { e.stopImmediatePropagation(); obj.state.dragable = true; obj.state.mouseX = e.clientX; obj.state.mouseY = e.clientY; }, imgMouseMove = function(e) { e.stopImmediatePropagation(); if (obj.state.dragable) { var x = e.clientX - obj.state.mouseX; var y = e.clientY - obj.state.mouseY; var bg = el.css('background-position').split(' '); var bgX = x + parseInt(bg[0]); var bgY = y + parseInt(bg[1]); el.css('background-position', bgX +'px ' + bgY + 'px'); obj.state.mouseX = e.clientX; obj.state.mouseY = e.clientY; } }, imgMouseUp = function(e) { e.stopImmediatePropagation(); obj.state.dragable = false; }, zoomImage = function(e) { e.originalEvent.wheelDelta > 0 || e.originalEvent.detail < 0 ? obj.ratio*=1.1 : obj.ratio*=0.9; setBackground(); } obj.spinner.show(); obj.image.onload = function() { obj.spinner.hide(); setBackground(); //el.bind('mousedown', imgMouseDown); //el.bind('mousemove', imgMouseMove); //$(window).bind('mouseup', imgMouseUp); el.bind('mousewheel DOMMouseScroll', zoomImage); }; obj.image.src = options.imgSrc; //el.on('remove', function(){$(window).unbind('mouseup', imgMouseUp)}); return obj; }; jQuery.fn.cropbox = function(options){ return new cropbox(options, this); }; })); $(function() { $(document).mousemove(function(e) { if (!!this.move) { var posix = !document.move_target ? {'x': 0, 'y': 0} : document.move_target.posix, callback = document.call_down || function() { $(this.move_target).css({ 'top': e.pageY - posix.y+move_offset, 'left': e.pageX - posix.x-move_offset }); }; callback.call(this, e, posix); } }).mouseup(function(e) { if (!!this.move) { var callback = document.call_up || function(){}; callback.call(this, e); $.extend(this, { 'move': false, 'move_target': null, 'call_down': false, 'call_up': false }); } }); var $box = $('.thumbBox').mousedown(function(e) { var offset = $(this).offset(); this.posix = {'x': e.pageX - offset.left, 'y': e.pageY - offset.top}; $.extend(document, {'move': true, 'move_target': this}); }).on('mousedown', '#coor', function(e) { var posix = { 'w': $box.width(), 'h': $box.height(), 'x': e.pageX, 'y': e.pageY }; $.extend(document, {'move': true, 'call_down': function(e) { wa=Math.max(30, e.pageX - posix.x + posix.w); ha=Math.max(30, e.pageY - posix.y + posix.h); $box.css({ 'width': wa, 'height': ha }); }}); return false; }); }); 

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