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1 line
2.9 KiB
Plaintext
9 months ago
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/*! jq-signature.min.js, v1.0.0, minified 2015-05-25 */!function(a,b,c){"use strict";function d(a,b){this.element=a,this.$element=c(this.element),this.canvas=!1,this.$canvas=!1,this.ctx=!1,this.drawing=!1,this.currentPos={x:0,y:0},this.lastPos=this.currentPos,this._data=this.$element.data(),this.settings=c.extend({},f,b,this._data),this.init()}a.requestAnimFrame=function(b){return a.requestAnimationFrame||a.webkitRequestAnimationFrame||a.mozRequestAnimationFrame||a.oRequestAnimationFrame||a.msRequestAnimaitonFrame||function(b){a.setTimeout(b,1e3/60)}}();var e="jqSignature",f={lineColor:"#222222",lineWidth:1,border:"1px dashed #AAAAAA",background:"#FFFFFF",width:300,height:100,autoFit:!1},g="<canvas></canvas>";d.prototype={init:function(){this.$canvas=c(g).appendTo(this.$element),this.$canvas.attr({width:this.settings.width,height:this.settings.height}),this.$canvas.css({boxSizing:"border-box",width:this.settings.width+"px",height:this.settings.height+"px",border:this.settings.border,background:this.settings.background,cursor:"crosshair"}),this.settings.autoFit===!0&&this._resizeCanvas(),this.canvas=this.$canvas[0],this._resetCanvas(),this.$canvas.on("mousedown touchstart",c.proxy(function(a){this.drawing=!0,this.lastPos=this.currentPos=this._getPosition(a)},this)),this.$canvas.on("mousemove touchmove",c.proxy(function(a){this.currentPos=this._getPosition(a)},this)),this.$canvas.on("mouseup touchend",c.proxy(function(a){this.drawing=!1;var b=c.Event("jq.signature.changed");this.$element.trigger(b)},this)),c(b).on("touchstart touchmove touchend",c.proxy(function(a){a.target===this.canvas&&a.preventDefault()},this));var d=this;!function e(){a.requestAnimFrame(e),d._renderCanvas()}()},clearCanvas:function(){this.canvas.width=this.canvas.width,this._resetCanvas()},getDataURL:function(){return this.canvas.toDataURL()},_getPosition:function(a){var b,c,d;return d=this.canvas.getBoundingClientRect(),a=a.originalEvent,-1!==a.type.indexOf("touch")?(b=a.touches[0].clientX-d.left,c=a.touches[0].clientY-d.top):(b=a.clientX-d.left,c=a.clientY-d.top),{x:b,y:c}},_renderCanvas:function(){this.drawing&&(this.ctx.moveTo(this.lastPos.x,this.lastPos.y),this.ctx.lineTo(this.currentPos.x,this.currentPos.y),this.ctx.stroke(),this.lastPos=this.currentPos)},_resetCanvas:function(){this.ctx=this.canvas.getContext("2d"),this.ctx.strokeStyle=this.settings.lineColor,this.ctx.lineWidth=this.settings.lineWidth},_resizeCanvas:function(){var a=this.$element.outerWidth();this.$canvas.attr("width",a),this.$canvas.css("width",a+"px")}},c.fn[e]=function(a){var b=arguments;if(void 0===a||"object"==typeof a)return this.each(function(){c.data(this,"plugin_"+e)||c.data(this,"plugin_"+e,new d(this,a))});if("string"==typeof a&&"_"!==a[0]&&"init"!==a){var f;return this.each(function(){var g=c.data(this,"plugin_"+e);g instanceof d&&"function"==typeof g[a]&&(f=g[a].apply(g,Array.prototype.slice.call(b,1))),"destroy"===a&&c.data(this,"plugin_"+e,null)}),void 0!==f?f:this}}}(window,document,jQuery);
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