mirror of https://github.com/luileito/jsketch.git
2 lines
9.6 KiB
JavaScript
2 lines
9.6 KiB
JavaScript
/*! jSketch drawing lib (all in one) | v2.0.0 | 2017-11-12 */
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!function(a){var b=function(a,b){return new c(a,b)},c=function(a,b){return a?(this.context(a),this.stageWidth=a.width,this.stageHeight=a.height,this.data={},this.drawingDefaults(b),this):void 0};b.fn=c.prototype={context:function(a){if(null===a)throw"No canvas element specified.";return this.canvas=a,this.graphics=a.getContext("2d"),this},drawingDefaults:function(a){return"undefined"==typeof a&&(a={}),"undefined"==typeof a.fillStyle&&(a.fillStyle="#F00"),"undefined"==typeof a.strokeStyle&&(a.strokeStyle="#F0F"),"undefined"==typeof a.lineWidth&&(a.lineWidth=2),"undefined"==typeof a.lineCap&&(a.lineCap="round"),"undefined"==typeof a.lineJoin&&(a.lineJoin="round"),"undefined"==typeof a.miterLimit&&(a.miterLimit=10),this.saveGraphics(a),this.restoreGraphics(),this},size:function(a,b){return this.stageWidth=a,this.stageHeight=b,this.canvas.width=a,this.canvas.height=b,this.restoreGraphics(),this},background:function(a){return this.beginFill(a),this.graphics.fillRect(0,0,this.stageWidth,this.stageHeight),this.endFill(),this},stage:function(a,b,c){return this.size(a,b).background(c),this},beginFill:function(a){return this.saveGraphics(),this.graphics.fillStyle=a,this},endFill:function(){return this.restoreGraphics(),this},lineStyle:function(a,b,c,d,e){var f={strokeStyle:a||this.graphics.strokeStyle,lineWidth:b||this.graphics.lineWidth,lineCap:c||this.graphics.lineCap,lineJoin:d||this.graphics.lineJoin,miterLimit:e||this.graphics.miterLimit};return this.saveGraphics(f),this.restoreGraphics(),this},moveTo:function(a,b){return this.graphics.moveTo(a,b),this},lineTo:function(a,b){return this.graphics.lineTo(a,b),this},line:function(a,b,c,d){return this.graphics.moveTo(a,b),this.lineTo(c,d),this},curveTo:function(a,b,c,d){return this.graphics.quadraticCurveTo(c,d,a,b),this},curve:function(a,b,c,d,e,f){return this.graphics.moveTo(a,b),this.curveTo(c,d,e,f),this},stroke:function(){return this.graphics.stroke(),this},strokeRect:function(a,b,c,d){return this.graphics.beginPath(),this.graphics.strokeRect(a,b,c,d),this.graphics.closePath(),this},fillRect:function(a,b,c,d){return this.graphics.beginPath(),this.graphics.fillRect(a,b,c,d),this.graphics.closePath(),this},strokeCircle:function(a,b,c){return this.graphics.beginPath(),this.graphics.arc(a,b,c,0,2*Math.PI,!1),this.graphics.stroke(),this.graphics.closePath(),this},fillCircle:function(a,b,c){return this.graphics.beginPath(),this.graphics.arc(a,b,c,0,2*Math.PI,!1),this.graphics.fill(),this.graphics.closePath(),this},radialCircle:function(a,b,c,d,e){var f=this.graphics.createRadialGradient(a,b,c,a,b,d||5);if("array"!==e.constructor.name)e=[this.graphics.fillStyle,"white"];else for(var g=0;g<e.length;g++){var h=e[i];f.addColorStop(i,h)}return this.beginFill(f).fillCircle(a,b,c).endFill(),this},beginPath:function(){return this.saveGraphics(),this.graphics.beginPath(),this},closePath:function(){return this.graphics.closePath(),this.restoreGraphics(),this},eraser:function(a){return"undefined"==typeof a&&(a=15),this.graphics.globalCompositeOperation="destination-out",this.lineStyle(null,a),this},pencil:function(a){return"undefined"==typeof a&&(a=2),this.graphics.globalCompositeOperation="source-over",this.lineStyle(null,a),this},clear:function(){return this.graphics.clearRect(0,0,this.stageWidth,this.stageHeight),this},save:function(){return this.graphics.save(),this},restore:function(){return this.graphics.restore(),this},saveGraphics:function(a){return"undefined"!=typeof a&&(this.data.options=a),this},restoreGraphics:function(a){"undefined"==typeof a&&(a=this.data.options);for(var b in a)this.graphics[b]=a[b];return this},drawImage:function(a,b,c){"undefined"==typeof b&&(b=0),"undefined"==typeof c&&(c=0);var d=this,e=new Image;return e.src=a,e.onload=function(){d.graphics.drawImage(e,b,c)},this}},a.jSketch=b}(this),function(a){function b(a,b){b||(b=a.data(o).options),b.cssCursors&&(a[0].style.cursor=b.interactive?"pointer":"not-allowed")}function c(b){var c=a(b.target),d=c.offset();return{x:Math.round(b.pageX-d.left),y:Math.round(b.pageY-d.top)}}function d(a,b,c){b.coords[a]||(b.coords[a]=[]);var d=(new Date).getTime();b.options.relTimestamps&&(0===b.strokes.length&&0===b.coords[a].length&&(b.timestamp=d),d-=b.timestamp),b.coords[a].push([c.x,c.y,d,+b.sketch.isDrawing])}function e(a){return a.originalEvent.touches?!1:void l(a)}function f(a){return a.originalEvent.touches?!1:void m(a)}function g(a){return a.originalEvent.touches?!1:void n(a)}function h(b,c){var d=a(b.target),e=d.data(o),f=e.options,g=b.originalEvent.touches;if(f.multitouch)for(var h=0;h<g.length;h++){var i=g[h];i.type=b.type,c(i)}else{var i=g[0];i.type=b.type,c(i)}}function i(a){h(a,l),a.preventDefault()}function j(a){h(a,m),a.preventDefault()}function k(a){h(a,n),a.preventDefault()}function l(b){if(3===b.which)return!1;var e=b.identifier||0,f=a(b.target),g=f.data(o),h=g.options;if(h.interactive){g.sketch.isDrawing=!0;var i=c(b);h.graphics.firstPointSize>0&&g.sketch.beginFill(h.graphics.fillStyle).fillCircle(i.x,i.y,h.graphics.firstPointSize).endFill(),g.coords[e]||(g.coords[e]=[]),g.coords[e].length>0&&(g.strokes.push(g.coords[e]),g.coords[e]=[]),d(e,g,i),"function"==typeof h.events.mousedown&&h.events.mousedown(f,g,b)}}function m(b){var e=b.identifier||0,f=a(b.target),g=f.data(o),h=g.options;if(h.interactive&&(h.mouseupMovements&&0!==g.strokes.length||g.sketch.isDrawing)){var i=c(b);if(g.sketch.isDrawing){var j=g.coords[e][g.coords[e].length-1];g.sketch.beginPath().line(j[0],j[1],i.x,i.y).stroke().closePath()}d(e,g,i),"function"==typeof h.events.mousemove&&h.events.mousemove(f,g,b)}}function n(b){var c=b.identifier||0,d=a(b.target),e=d.data(o),f=e.options;f.interactive&&(e.sketch.isDrawing=!1,e.strokes.push(e.coords[c]),e.coords[c]=[],"function"==typeof f.events.mouseup&&f.events.mouseup(d,e,b))}var o="sketchable",p={init:function(c){var d=a.extend(!0,{},a.fn.sketchable.defaults,c||{});return this.each(function(){var c=a(this),h=c.data(o);h||(c.bind("mousedown",e),c.bind("mousemove",f),c.bind("mouseup",g),c.bind("touchstart",i),c.bind("touchmove",j),c.bind("touchend",k),this.onselectstart=function(){return!1},b(c,d));var l=new jSketch(this,d.graphics);c.data(o,{strokes:[],coords:{},timestamp:(new Date).getTime(),sketch:l,options:d}),d.events&&"function"==typeof d.events.init&&d.events.init(c,c.data(o));for(var m in a.fn.sketchable.plugins)a.fn.sketchable.plugins[m](c)})},config:function(c){return c?this.each(function(){var d=a(this),e=d.data(o);e.options=a.extend(!0,{},a.fn.sketchable.defaults,e.options,c),b(d)}):a(this).data(o)},strokes:function(b){if(b)return this.each(function(){var c=a(this),d=c.data(o);d.strokes=b});var c=a(this).data(o);return c.strokes},handler:function(b){return this.each(function(){var c=a(this),d=c.data(o);b(c,d)})},clear:function(){return this.each(function(){var b=a(this),c=b.data(o)||{},d=c.options;c.sketch&&(c.sketch.clear(),c.strokes=[],c.coords={}),d&&"function"==typeof d.events.clear&&d.events.clear(b,c)})},reset:function(b){return this.each(function(){var c=a(this),d=c.data(o)||{},e=d.options;c.sketchable("destroy").sketchable(b),e&&"function"==typeof e.events.reset&&e.events.reset(c,d)})},destroy:function(){return this.each(function(){var b=a(this),c=b.data(o)||{},d=c.options;b.unbind("mouseup",g),b.unbind("mousemove",f),b.unbind("mousedown",e),b.unbind("touchstart",i),b.unbind("touchmove",j),b.unbind("touchend",k),b.removeData(o),d&&"function"==typeof d.events.destroy&&d.events.destroy(b,c)})}};a.fn.sketchable=function(b){return"object"!=typeof b&&b?p[b]?p[b].apply(this,Array.prototype.slice.call(arguments,1)):(a.error("Unknown method: "+b),this):p.init.apply(this,arguments)},a.fn.sketchable.api=p,a.fn.sketchable.plugins={},a.fn.sketchable.defaults={interactive:!0,mouseupMovements:!1,relTimestamps:!1,multitouch:!0,cssCursors:!0,events:{},graphics:{firstPointSize:3,lineWidth:3,strokeStyle:"#F0F",fillStyle:"#F0F",lineCap:"round",lineJoin:"round",miterLimit:10}}}(jQuery),function(a){function b(b){function c(){if(h>0){h--;var a=new Image;a.src=g[h].image,a.onload=function(){e(this)}}}function d(){if(h<g.length-1){h++;var a=new Image;a.src=g[h].image,a.onload=function(){e(this)}}}function e(a){b.sketchable("handler",function(b,c){c.sketch.clear(),c.sketch.graphics.drawImage(a,0,0)})}function f(a){if(a.ctrlKey)switch(a.which){case 26:a.shiftKey?i.redo():i.undo();break;case 25:i.redo()}}var g=[],h=-1,i=this;this.undo=function(){return c(),b.sketchable("handler",function(a,b){g[h]&&(b.strokes=g[h].strokes.slice())}),this},this.redo=function(){return d(),b.sketchable("handler",function(a,b){g[h]&&(b.strokes=g[h].strokes.slice())}),this},this.reset=function(){return g=[],h=-1,this},this.save=function(){return h++,h<g.length&&(g.length=h),b.sketchable("handler",function(a,b){g.push({image:a[0].toDataURL(),strokes:b.strokes.slice()})}),this},this.init=function(){return a(document).off("keypress",f),a(document).on("keypress",f),this},this.destroy=function(){return a(document).off("keypress",f),this.reset()}}var c="sketchable";a.fn.sketchable.plugins.memento=function(d){function e(a){if(!f.options.$$bound)if(f.options.$$bound=!0,f.options.events&&"function"==typeof f.options.events[a]){var b=f.options.events[a];f.options.events[a]=function(){b.apply(d,arguments),g[a].apply(d,arguments)}}else f.options.events[a]=g[a]}for(var f=d.sketchable("config"),g={clear:function(a,b){b.memento.reset()},mouseup:function(a,b,c){b.memento.save()},destroy:function(a,b){b.memento.destroy()}},h="mouseup clear destroy".split(" "),i=0;i<h.length;i++)e(h[i]);a.extend(a.fn.sketchable.api,{undo:function(){var b=a(this),d=b.data(c);d.memento.undo()},redo:function(){var b=a(this),d=b.data(c);d.memento.redo()},save:function(){var b=a(this),d=b.data(c);d.memento.save()}}),f.memento=new b(d),f.memento.init().save()}}(jQuery); |