mirror of https://github.com/luileito/jsketch.git
2 lines
15 KiB
JavaScript
2 lines
15 KiB
JavaScript
/*! jSketch drawing lib (all in one) | v2.0.1 | 2019-07-23 */
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!function(a){function b(a,b){if(!a)throw new Error("Sketchable requires a DOM element or selector.");return"string"==typeof a&&(a=document.querySelector(a)),this.setContext(a),this.stageWidth=a.offsetWidth,this.stageHeight=a.offsetHeight,this.data=b,this.callStack=[],this.setDefaults()}b.prototype={setContext:function(a){if(!a)throw new Error("No canvas element specified.");return this.canvas=a,this.context=a.getContext("2d"),this},setDefaults:function(){var a={fillStyle:this.data.fillStyle||"#F00",strokeStyle:this.data.strokeStyle||"#F0F",lineWidth:this.data.lineWidth||2,lineCap:this.data.lineCap||"round",lineJoin:this.data.lineJoin||"round",miterLimit:this.data.miterLimit||10};for(var b in a){var c=a[b];this.callStack.push({property:b,value:c})}return this.saveGraphics(a).restoreGraphics()},size:function(a,b){var c=parseFloat(a),d=parseFloat(b);return this.stageWidth=c,this.stageHeight=d,this.canvas.width=c,this.canvas.height=d,this.restoreGraphics(),this},background:function(a){var b=[0,0,this.stageWidth,this.stageHeight];return this.beginFill(a),this.context.fillRect.apply(this.context,b),this.endFill(),this.callStack.push({property:"fillStyle",value:a}),this.callStack.push({method:"fillRect",args:b}),this},stage:function(a,b,c){return this.size(a,b).background(c),this},beginFill:function(a){return this.saveGraphics({fillStyle:a}),this.context.fillStyle=a,this.callStack.push({property:"fillStyle",value:a}),this},endFill:function(){return this.restoreGraphics(),this},lineStyle:function(a,b,c,d,e){var f={strokeStyle:a,lineWidth:b,lineCap:c,lineJoin:d,miterLimit:e};return this.saveGraphics(f).restoreGraphics()},moveTo:function(a,b){var c=[].slice.call(arguments);return this.context.moveTo.apply(this.context,c),this.callStack.push({method:"moveTo",args:c}),this},lineTo:function(a,b){var c=[].slice.call(arguments);return this.context.lineTo.apply(this.context,c),this.callStack.push({method:"lineTo",args:c}),this},line:function(a,b,c,d){return this.moveTo(a,b),this.lineTo(c,d),this},curveTo:function(a,b,c,d){var e=[c,d,a,b];return this.context.quadraticCurveTo.apply(this.context,e),this.callStack.push({method:"quadraticCurveTo",args:e}),this},curve:function(a,b,c,d,e,f){return this.moveTo(a,b),this.curveTo(c,d,e,f),this},stroke:function(){return this.context.stroke(),this.callStack.push({method:"stroke"}),this},strokeRect:function(a,b,c,d){var e=[].slice.call(arguments);return this.context.beginPath(),this.context.strokeRect.apply(this.context,e),this.context.closePath(),this.callStack.push({method:"strokeRect",args:e}),this},fillRect:function(a,b,c,d){var e=[].slice.call(arguments);return this.context.beginPath(),this.context.fillRect.apply(this.context,e),this.context.closePath(),this.callStack.push({method:"fillRect",args:e}),this},rect:function(a,b,c,d){var e=[].slice.call(arguments);return this.fillRect.apply(this,e),this.strokeRect.apply(this,e),this},strokeCircle:function(a,b,c){var d=[a,b,c,0,2*Math.PI,!1];return this.context.beginPath(),this.context.arc.apply(this.context,d),this.context.stroke(),this.context.closePath(),this.callStack.push({method:"strokeCircle",args:d}),this},fillCircle:function(a,b,c){var d=[a,b,c,0,2*Math.PI,!1];return this.context.beginPath(),this.context.arc.apply(this.context,d),this.context.fill(),this.context.closePath(),this.callStack.push({method:"fillCircle",args:d}),this},circle:function(a,b,c){var d=[].slice.call(arguments);return this.fillCircle.apply(this,d),this.strokeCircle.apply(this,d),this},radialCircle:function(a,b,c,d,e){("undefined"==typeof d||0>d)&&(d=1);var f=this.context.createRadialGradient(a,b,c,a,b,d);e&&"array"===e.constructor.name.toLowerCase()||(e=[this.context.fillStyle,"white"]);for(var g=0;g<e.length;g++){var h=e[g];f.addColorStop(g,h)}return this.beginFill(f).fillCircle(a,b,c).endFill(),this},beginPath:function(){return this.context.beginPath(),this.callStack.push({method:"beginPath"}),this},closePath:function(){return this.context.closePath(),this.callStack.push({method:"closePath"}),this},eraser:function(){return this.context.globalCompositeOperation="destination-out",this.callStack.push({property:"comp-op",value:"dst_out"}),this},pencil:function(){return this.context.globalCompositeOperation="source-over",this.callStack.push({property:"comp-op",value:"src_over"}),this},clear:function(){var a=[0,0,this.stageWidth,this.stageHeight];return this.context.clearRect.apply(this.context,a),this.callStack.push({method:"clear"}),this},save:function(){return this.context.save(),this.callStack.push({method:"save"}),this},restore:function(){return this.context.restore(),this.callStack.push({method:"restore"}),this},saveGraphics:function(a){for(var b in a){var c=a[b];c&&c!==this.data[b]&&(this.data[b]=c,this.callStack.push({property:b,value:c}))}return this},restoreGraphics:function(){for(var a in this.data)this.context[a]=this.data[a];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.context.drawImage(e,b,c),d.callStack.push({method:"drawImage",args:[e,b,c]}),d.callStack.push({method:"removeAsync"})},e.onerror=function(){d.callStack.push({method:"removeAsync"})},d.callStack.push({method:"addAsync"}),this}},a.jSketch=b}(this),function(a){function b(a,b){b||(b=a.data(q).options);var c=a.get(0);b.cssCursors&&(c.style.cursor=b.interactive?"pointer":"not-allowed"),c.onselectstart=function(){return!1}}function c(a,b){b=b.split(".");for(var c=0;c<b.length;c++){var d=b[c];a=a[d]}return a}function d(b){var c=a(b.target),d=c.offset();return{x:Math.round(b.pageX-d.left),y:Math.round(b.pageY-d.top),time:Date.now()}}function e(a,b,c){var d=b.coords[a];if(b.options.relTimestamps&&(0===b.strokes.length&&0===d.length&&(b.timestamp=c.time),c.time-=b.timestamp),d.push([c.x,c.y,c.time,+b.sketch.isDrawing,a]),b.options.filterCoords&&d.length>1){var e=d.length-1,f=d[e],g=d[e-1];f[0]==g[0]&&f[1]==g[1]&&d.splice(e,1)}}function f(a){return a.originalEvent.touches?!1:void l(a)}function g(a){return a.originalEvent.touches?!1:void m(a)}function h(a){return a.originalEvent.touches?!1:void n(a)}function i(a){o(a,l),a.preventDefault()}function j(a){o(a,m),a.preventDefault()}function k(a){o(a,n),a.preventDefault()}function l(b){if(3===b.which)return!1;var c=Math.abs(b.identifier||0),f=a(b.target),g=f.data(q),h=g.options;if(h.interactive){var i=d(b);"function"==typeof h.events.mousedownBefore&&h.events.mousedownBefore(f,g,b),h.graphics.firstPointSize>0&&g.sketch.beginFill(h.graphics.fillStyle).fillCircle(i.x,i.y,h.graphics.firstPointSize).endFill(),g.sketch.isDrawing=!0,g.sketch.beginPath();var j=g.coords[c];j||(j=[]),j.length>0&&g.strokes.push(j),g.coords[c]=[],e(c,g,i),"function"==typeof h.events.mousedown&&h.events.mousedown(f,g,b)}}function m(b){var c=Math.abs(b.identifier||0),f=a(b.target),g=f.data(q),h=g.options;if(h.interactive&&(h.mouseupMovements&&0!==g.strokes.length||g.sketch.isDrawing)){var i=d(b);"function"==typeof h.events.mousemoveBefore&&h.events.mousemoveBefore(f,g,b);var j=g.coords[c],k=j[j.length-1];if(k){var l,m;g.sketch.isDrawing?(l=h.strokeStyle,m=h.lineWidth):h.mouseupMovements&&(l=h.mouseupMovements.strokeStyle||"#DDD",m=h.mouseupMovements.lineWidth||1),g.sketch.lineStyle(l,m).line(k[0],k[1],i.x,i.y).stroke()}e(c,g,i),"function"==typeof h.events.mousemove&&h.events.mousemove(f,g,b)}}function n(b){var c=Math.abs(b.identifier||0),d=a(b.target),e=d.data(q),f=e.options;f.interactive&&("function"==typeof f.events.mouseupBefore&&f.events.mouseupBefore(d,e,b),e.sketch.isDrawing=!1,e.sketch.closePath(),e.strokes.push(e.coords[c]),e.coords[c]=[],"function"==typeof f.events.mouseup&&f.events.mouseup(d,e,b))}function o(b,c){var d=a(b.target),e=d.data(q),f=e.options;if(f.multitouch)for(var g=b.originalEvent.changedTouches,h=0;h<g.length;h++){var i=g[h];c(i)}else{var i=b.originalEvent.touches[0];c(i)}}function p(a){var b=a.data(q),c=b.options,d=b.sketch;d.clear();for(var e=0;e<b.strokes.length;e++)for(var f=b.strokes[e],g=0;g<f.length;g++){var h=f[g],i=f[g+1],j=!0;if(h.length>3&&(j=1===h[3]),!j&&!c.mouseupMovements)break;if(0===g){c.graphics.firstPointSize>0&&d.beginFill(c.graphics.fillStyle).fillCircle(h[0],h[1],c.graphics.firstPointSize).endFill();var k,l;j?(k=c.strokeStyle,l=c.lineWidth):c.mouseupMovements&&(k=c.mouseupMovements.strokeStyle||"#DDD",l=c.mouseupMovements.lineWidth||1),d.lineStyle(k,l)}else i&&d.beginPath().line(h[0],h[1],i[0],i[1]).stroke().closePath()}}var q="sketchable",r={init:function(c){var d=a.extend(!0,{},a.fn.sketchable.defaults,c||{});return this.each(function(){var c=a(this),e=c.data(q);e||(c.bind("mousedown",f),c.bind("mousemove",g),c.bind("mouseup",h),c.bind("touchstart",i),c.bind("touchmove",j),c.bind("touchend",k),b(c,d));var l=new jSketch(this,d.graphics);c.data(q,{strokes:[],coords:{},timestamp:0,sketch:l,options:d}),"function"==typeof d.events.init&&d.events.init(c,c.data(q));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(q);e.options=a.extend(!0,{},a.fn.sketchable.defaults,e.options,c),b(d)}):a(this).data(q).options},data:function(b){var c=a(this).data(q);return b?c[b]:c},strokes:function(b){if(b)return this.each(function(){var c=a(this),d=c.data(q);d.strokes=b,p(c)});var c=a(this).data(q);return c.strokes},handler:function(b){return this.each(function(){var c=a(this),d=c.data(q);b(c,d)})},clear:function(b){return this.each(function(){var c=a(this),d=c.data(q),e=d.options;d.sketch.clear(),b||(d.strokes=[],d.coords={}),"function"==typeof e.events.clear&&e.events.clear(c,d)})},reset:function(b){return this.each(function(){var c=a(this),d=c.data(q),e=d.options;c.sketchable("destroy").sketchable(b),"function"==typeof e.events.reset&&e.events.reset(c,d)})},destroy:function(){return this.each(function(){var b=a(this),c=b.data(q),d=c.options;b.unbind("mouseup",h),b.unbind("mousemove",g),b.unbind("mousedown",f),b.unbind("touchstart",i),b.unbind("touchmove",j),b.unbind("touchend",k),b.removeData(q),d&&"function"==typeof d.events.destroy&&d.events.destroy(b,c)})},decorate:function(b,c,d){return this.each(function(){var e=a(this),f=e.data(q),g=f.options,h="_bound$"+b+"."+d;if(!f[h])if(f[h]=!0,g.events&&"function"==typeof g.events[b]){var i=g.events[b];g.events[b]=function(){i.apply(this,arguments),c.apply(this,arguments)}}else g.events[b]=c})}};a.fn.sketchable=function(b){var d=Array.prototype.slice.call(arguments,1);if("object"==typeof b||!b)return r.init.apply(this,arguments);if(b.indexOf(".")>-1){var e=c(r,b);return e.apply(this,d)}return r[b]?r[b].apply(this,d):(a.error("Unknown method: "+b),this)},a.fn.sketchable.api=r,a.fn.sketchable.plugins={},a.fn.sketchable.defaults={interactive:!0,mouseupMovements:!1,relTimestamps:!1,multitouch:!0,cssCursors:!0,filterCoords:!1,events:{},graphics:{firstPointSize:3,lineWidth:3,strokeStyle:"#F0F",fillStyle:"#F0F",lineCap:"round",lineJoin:"round",miterLimit:10}}}(jQuery),function(a){function b(b){function c(a,c){b.sketchable("handler",function(b,d){d.sketch.clear(),d.sketch.context.drawImage(a,0,0),d.strokes=c.strokes.slice(),d.sketch.callStack=c.callStack.slice()})}function d(a){if(a.ctrlKey)switch(a.which){case 26:a.shiftKey?g.redo():g.undo();break;case 25:g.redo()}}var e=[],f=-1,g=this;this.undo=function(){return f>0&&(f--,this.restore()),this},this.redo=function(){return f<e.length-1&&(f++,this.restore()),this},this.reset=function(){return e=[],f=-1,this.save()},this.save=function(a){return b.sketchable("handler",function(b,c){a&&a.identifier>0?e[f].strokes=c.strokes.slice():(e.push({image:b.get(0).toDataURL(),strokes:c.strokes.slice(),callStack:c.sketch.callStack.slice()}),f++)}),this},this.state=function(){return JSON.parse(JSON.stringify(e[f]))},this.restore=function(a){a||(a=e[f]);var b=new Image;return b.src=a.image,b.onload=function(){c(this,a)},this},this.init=function(){return a(document).off("keypress",d),a(document).on("keypress",d),this.save()},this.destroy=function(){return a(document).off("keypress",d),this.reset()}}var c="sketchable";a.fn.sketchable.plugins.memento=function(d){for(var e={clear:function(a,b){b.memento.reset()},mouseup:function(a,b,c){b.memento.save(c)},destroy:function(a,b){b.memento.destroy()}},f="mouseup clear destroy".split(" "),g=0;g<f.length;g++){var h=f[g];d.sketchable("decorate",h,e[h],"memento")}a.extend(a.fn.sketchable.api,{memento:{undo:function(){var b=a(this).data(c);return b.memento.undo(),d},redo:function(){var b=a(this).data(c);return b.memento.redo(),d},save:function(){var b=a(this).data(c);return b.memento.save(),d},state:function(){var b=a(this).data(c);return b.memento.state()},restore:function(b){var e=a(this).data(c);return e.memento.restore(b),d}}});var i=d.sketchable("data");i.memento=new b(d),i.memento.init()}}(jQuery),function(a){function b(a){function b(b,c,d){var f=c[d],g=c[d+1];if(0===d||f.strokeId!==g.strokeId){if(b.data.firstPointSize){var i=d>0?g:f;b.beginFill(b.data.strokeStyle).fillCircle(i.x,i.y,b.data.firstPointSize).endFill()}d>0&&"function"==typeof h.animationstep&&h.animationstep(a,e),b.closePath().beginPath()}f.strokeId===g.strokeId&&b.line(f.x,f.y,g.x,g.y).stroke()}function d(a){return a instanceof Array?{x:a[0],y:a[1],time:a[2],strokeId:a[4]}:a}for(var e=a.data(c),f=e.sketch,g=e.strokes,h=e.options.events,i=e.options.graphics,j=[],k=0;k<g.length;k++)for(var l=g[k],m=0;m<l.length;m++){var n=d(l[m]);n.strokeId||(n.strokeId=k),j.push(n)}"function"==typeof h.animationstart&&h.animationstart(a,e);var o,p=0;f.lineStyle(i.strokeStyle,i.lineWidth),function q(){o=requestAnimationFrame(q);try{b(f,j,p,i)}catch(c){console.error(c),cancelAnimationFrame(o)}++p===j.length-1&&(cancelAnimationFrame(o),"function"==typeof h.animationend&&h.animationend(a,e))}(),this.cancel=function(){return cancelAnimationFrame(o),this}}var c="sketchable";a.fn.sketchable.plugins.animate=function(d){for(var e={clear:function(a,b){b.animate&&b.animate.cancel()},destroy:function(a,b){b.animate&&b.animate.cancel()}},f="clear destroy".split(" "),g=0;g<f.length;g++){var h=f[g];d.sketchable("decorate",h,e[h],"animate")}a.extend(a.fn.sketchable.api,{animate:{strokes:function(){var e=a(this).data(c);return e.animate=new b(d),d}}})}}(jQuery),function(a){var b="sketchable";a.fn.sketchable.plugins.serializer=function(c){a.extend(a.fn.sketchable.api,{serializer:{save:function(){var c=a(this).data(b);return JSON.stringify({strokes:c.strokes,options:c.options,actions:c.sketch.callStack})},load:function(d){for(var e=a(this).data(b),f=JSON.parse(d),g=e.sketch,h=0;h<f.actions.length;h++){var i=f.actions[h];i.property&&"object"!=typeof i.value?g.data[i.property]=i.value:i.method?g[i.method].apply(g,i.args):console.warn("Unknown call:",i)}return e.sketch.callStack=f.actions.slice(),e.strokes=f.strokes.slice(),e.options=f.options,c}}})}}(jQuery),function(a){var b="sketchable";a.fn.sketchable.plugins.svg=function(c){for(var d={clear:function(a,b){b.sketch.callStack=[]},destroy:function(a,b){b.sketch.callStack=[]}},e="clear destroy".split(" "),f=0;f<e.length;f++){var g=e[f];c.sketchable("decorate",g,d[g],"svg")}a.extend(a.fn.sketchable.api,{svg:{create:function(d){var e=a(this).data(b);return e.sketch.toSVG(d),c}}})}}(jQuery); |