CanvasInput.min.js

/*!
 *  CanvasInput v1.2.7
 *  http://goldfirestudios.com/blog/108/CanvasInput-HTML5-Canvas-Text-Input
 *
 *  (c) 2013-2017, James Simpson of GoldFire Studios
 *  goldfirestudios.com
 *
 *  MIT License
 */
!function(){var e=[],t=window.CanvasInput=function(t){var n=this;t=t?t:{},n._canvas=t.canvas||null,n._ctx=n._canvas?n._canvas.getContext("2d"):null,n._x=t.x||0,n._y=t.y||0,n._extraX=t.extraX||0,n._extraY=t.extraY||0,n._fontSize=t.fontSize||14,n._fontFamily=t.fontFamily||"Arial",n._fontColor=t.fontColor||"#000",n._placeHolderColor=t.placeHolderColor||"#bfbebd",n._fontWeight=t.fontWeight||"normal",n._fontStyle=t.fontStyle||"normal",n._fontShadowColor=t.fontShadowColor||"",n._fontShadowBlur=t.fontShadowBlur||0,n._fontShadowOffsetX=t.fontShadowOffsetX||0,n._fontShadowOffsetY=t.fontShadowOffsetY||0,n._readonly=t.readonly||!1,n._maxlength=t.maxlength||null,n._width=t.width||150,n._height=t.height||n._fontSize,n._padding=t.padding>=0?t.padding:5,n._borderWidth=t.borderWidth>=0?t.borderWidth:1,n._borderColor=t.borderColor||"#959595",n._borderRadius=t.borderRadius>=0?t.borderRadius:3,n._backgroundImage=t.backgroundImage||"",n._boxShadow=t.boxShadow||"1px 1px 0px rgba(255, 255, 255, 1)",n._innerShadow=t.innerShadow||"0px 0px 4px rgba(0, 0, 0, 0.4)",n._selectionColor=t.selectionColor||"rgba(179, 212, 253, 0.8)",n._placeHolder=t.placeHolder||"",n._value=(t.value||n._placeHolder)+"",n._onsubmit=t.onsubmit||function(){},n._onkeydown=t.onkeydown||function(){},n._onkeyup=t.onkeyup||function(){},n._onfocus=t.onfocus||function(){},n._onblur=t.onblur||function(){},n._cursor=!1,n._cursorPos=0,n._hasFocus=!1,n._selection=[0,0],n._wasOver=!1,n.boxShadow(n._boxShadow,!0),n._calcWH(),n._renderCanvas=document.createElement("canvas"),n._renderCanvas.setAttribute("width",n.outerW),n._renderCanvas.setAttribute("height",n.outerH),n._renderCtx=n._renderCanvas.getContext("2d"),n._shadowCanvas=document.createElement("canvas"),n._shadowCanvas.setAttribute("width",n._width+2*n._padding),n._shadowCanvas.setAttribute("height",n._height+2*n._padding),n._shadowCtx=n._shadowCanvas.getContext("2d"),"undefined"!=typeof t.backgroundGradient?(n._backgroundColor=n._renderCtx.createLinearGradient(0,0,0,n.outerH),n._backgroundColor.addColorStop(0,t.backgroundGradient[0]),n._backgroundColor.addColorStop(1,t.backgroundGradient[1])):n._backgroundColor=t.backgroundColor||"#fff",n._canvas&&(n._canvas.addEventListener("mousemove",function(e){e=e||window.event,n.mousemove(e,n)},!1),n._canvas.addEventListener("mousedown",function(e){e=e||window.event,n.mousedown(e,n)},!1),n._canvas.addEventListener("mouseup",function(e){e=e||window.event,n.mouseup(e,n)},!1));var o=function(e){e=e||window.event,n._hasFocus&&!n._mouseDown&&n.blur()};window.addEventListener("mouseup",o,!0),window.addEventListener("touchend",o,!0),n._hiddenInput=document.createElement("input"),n._hiddenInput.type="text",n._hiddenInput.style.position="absolute",n._hiddenInput.style.opacity=0,n._hiddenInput.style.pointerEvents="none",n._hiddenInput.style.zIndex=0,n._hiddenInput.style.transform="scale(0)",n._updateHiddenInput(),n._maxlength&&(n._hiddenInput.maxLength=n._maxlength),document.body.appendChild(n._hiddenInput),n._hiddenInput.value=n._value,n._hiddenInput.addEventListener("keydown",function(e){e=e||window.event,n._hasFocus&&(window.focus(),n._hiddenInput.focus(),n.keydown(e,n))}),n._hiddenInput.addEventListener("keyup",function(e){e=e||window.event,n._value=n._hiddenInput.value,n._cursorPos=n._hiddenInput.selectionStart,n._selection=[n._hiddenInput.selectionStart,n._hiddenInput.selectionEnd],n.render(),n._hasFocus&&n._onkeyup(e,n)}),e.push(n),n._inputsIndex=e.length-1,n.render()};t.prototype={canvas:function(e){var t=this;return"undefined"!=typeof e?(t._canvas=e,t._ctx=t._canvas.getContext("2d"),t.render()):t._canvas},x:function(e){var t=this;return"undefined"!=typeof e?(t._x=e,t._updateHiddenInput(),t.render()):t._x},y:function(e){var t=this;return"undefined"!=typeof e?(t._y=e,t._updateHiddenInput(),t.render()):t._y},extraX:function(e){var t=this;return"undefined"!=typeof e?(t._extraX=e,t._updateHiddenInput(),t.render()):t._extraX},extraY:function(e){var t=this;return"undefined"!=typeof e?(t._extraY=e,t._updateHiddenInput(),t.render()):t._extraY},fontSize:function(e){var t=this;return"undefined"!=typeof e?(t._fontSize=e,t.render()):t._fontSize},fontFamily:function(e){var t=this;return"undefined"!=typeof e?(t._fontFamily=e,t.render()):t._fontFamily},fontColor:function(e){var t=this;return"undefined"!=typeof e?(t._fontColor=e,t.render()):t._fontColor},placeHolderColor:function(e){var t=this;return"undefined"!=typeof e?(t._placeHolderColor=e,t.render()):t._placeHolderColor},fontWeight:function(e){var t=this;return"undefined"!=typeof e?(t._fontWeight=e,t.render()):t._fontWeight},fontStyle:function(e){var t=this;return"undefined"!=typeof e?(t._fontStyle=e,t.render()):t._fontStyle},fontShadowColor:function(e){var t=this;return"undefined"!=typeof e?(t._fontShadowColor=e,t.render()):t._fontShadowColor},fontShadowBlur:function(e){var t=this;return"undefined"!=typeof e?(t._fontShadowBlur=e,t.render()):t._fontShadowBlur},fontShadowOffsetX:function(e){var t=this;return"undefined"!=typeof e?(t._fontShadowOffsetX=e,t.render()):t._fontShadowOffsetX},fontShadowOffsetY:function(e){var t=this;return"undefined"!=typeof e?(t._fontShadowOffsetY=e,t.render()):t._fontShadowOffsetY},width:function(e){var t=this;return"undefined"!=typeof e?(t._width=e,t._calcWH(),t._updateCanvasWH(),t._updateHiddenInput(),t.render()):t._width},height:function(e){var t=this;return"undefined"!=typeof e?(t._height=e,t._calcWH(),t._updateCanvasWH(),t._updateHiddenInput(),t.render()):t._height},padding:function(e){var t=this;return"undefined"!=typeof e?(t._padding=e,t._calcWH(),t._updateCanvasWH(),t.render()):t._padding},borderWidth:function(e){var t=this;return"undefined"!=typeof e?(t._borderWidth=e,t._calcWH(),t._updateCanvasWH(),t.render()):t._borderWidth},borderColor:function(e){var t=this;return"undefined"!=typeof e?(t._borderColor=e,t.render()):t._borderColor},borderRadius:function(e){var t=this;return"undefined"!=typeof e?(t._borderRadius=e,t.render()):t._borderRadius},backgroundColor:function(e){var t=this;return"undefined"!=typeof e?(t._backgroundColor=e,t.render()):t._backgroundColor},backgroundGradient:function(e){var t=this;return"undefined"!=typeof e?(t._backgroundColor=t._renderCtx.createLinearGradient(0,0,0,t.outerH),t._backgroundColor.addColorStop(0,e[0]),t._backgroundColor.addColorStop(1,e[1]),t.render()):t._backgroundColor},boxShadow:function(e,t){var n=this;if("undefined"==typeof e)return n._boxShadow;var o=e.split("px ");return n._boxShadow={x:"none"===n._boxShadow?0:parseInt(o[0],10),y:"none"===n._boxShadow?0:parseInt(o[1],10),blur:"none"===n._boxShadow?0:parseInt(o[2],10),color:"none"===n._boxShadow?"":o[3]},n._boxShadow.x<0?(n.shadowL=Math.abs(n._boxShadow.x)+n._boxShadow.blur,n.shadowR=n._boxShadow.blur+n._boxShadow.x):(n.shadowL=Math.abs(n._boxShadow.blur-n._boxShadow.x),n.shadowR=n._boxShadow.blur+n._boxShadow.x),n._boxShadow.y<0?(n.shadowT=Math.abs(n._boxShadow.y)+n._boxShadow.blur,n.shadowB=n._boxShadow.blur+n._boxShadow.y):(n.shadowT=Math.abs(n._boxShadow.blur-n._boxShadow.y),n.shadowB=n._boxShadow.blur+n._boxShadow.y),n.shadowW=n.shadowL+n.shadowR,n.shadowH=n.shadowT+n.shadowB,n._calcWH(),t?void 0:(n._updateCanvasWH(),n.render())},innerShadow:function(e){var t=this;return"undefined"!=typeof e?(t._innerShadow=e,t.render()):t._innerShadow},selectionColor:function(e){var t=this;return"undefined"!=typeof e?(t._selectionColor=e,t.render()):t._selectionColor},placeHolder:function(e){var t=this;return"undefined"!=typeof e?(t._placeHolder=e,t.render()):t._placeHolder},value:function(e){var t=this;return"undefined"!=typeof e?(t._value=e+"",t._hiddenInput.value=e+"",t._cursorPos=t._clipText().length,t.render(),t):t._value===t._placeHolder?"":t._value},onsubmit:function(e){var t=this;return"undefined"!=typeof e?(t._onsubmit=e,t):void t._onsubmit()},onkeydown:function(e){var t=this;return"undefined"!=typeof e?(t._onkeydown=e,t):void t._onkeydown()},onkeyup:function(e){var t=this;return"undefined"!=typeof e?(t._onkeyup=e,t):void t._onkeyup()},focus:function(t){var n=this;if(!n._hasFocus){n._onfocus(n);for(var o=0;o<e.length;o++)e[o]._hasFocus&&e[o].blur()}n._selectionUpdated?delete n._selectionUpdated:n._selection=[0,0],n._hasFocus=!0,n._readonly?n._hiddenInput.readOnly=!0:(n._hiddenInput.readOnly=!1,n._cursorPos="number"==typeof t?t:n._clipText().length,n._placeHolder===n._value&&(n._value="",n._hiddenInput.value=""),n._cursor=!0,n._cursorInterval&&clearInterval(n._cursorInterval),n._cursorInterval=setInterval(function(){n._cursor=!n._cursor,n.render()},500));var r=n._selection[0]>0||n._selection[1]>0;return n._hiddenInput.focus(),n._hiddenInput.selectionStart=r?n._selection[0]:n._cursorPos,n._hiddenInput.selectionEnd=r?n._selection[1]:n._cursorPos,n.render()},blur:function(e){var t=e||this;return t._onblur(t),t._cursorInterval&&clearInterval(t._cursorInterval),t._hasFocus=!1,t._cursor=!1,t._selection=[0,0],t._hiddenInput.blur(),""===t._value&&(t._value=t._placeHolder),t.render()},keydown:function(t,n){var o=t.which;t.shiftKey;if(!n._readonly&&n._hasFocus){if(n._onkeydown(t,n),65===o&&(t.ctrlKey||t.metaKey))return n.selectText(),t.preventDefault(),n.render();if(17===o||t.metaKey||t.ctrlKey)return n;if(13===o)t.preventDefault(),n._onsubmit(t,n);else if(9===o&&(t.preventDefault(),e.length>1)){var r=e[n._inputsIndex+1]?n._inputsIndex+1:0;n.blur(),setTimeout(function(){e[r].focus()},10)}return n._value=n._hiddenInput.value,n._cursorPos=n._hiddenInput.selectionStart,n._selection=[0,0],n.render()}},click:function(e,t){var n=t._mousePos(e),o=n.x,r=n.y;return t._endSelection?(delete t._endSelection,void delete t._selectionUpdated):t._canvas&&t._overInput(o,r)||!t._canvas?t._mouseDown?(t._mouseDown=!1,t.click(e,t),t.focus(t._clickPos(o,r))):void 0:t.blur()},mousemove:function(e,t){var n=t._mousePos(e),o=n.x,r=n.y,d=t._overInput(o,r);if(d&&t._canvas?(t._canvas.style.cursor="text",t._wasOver=!0):t._wasOver&&t._canvas&&(t._canvas.style.cursor="default",t._wasOver=!1),t._hasFocus&&t._selectionStart>=0){var a=t._clickPos(o,r),i=Math.min(t._selectionStart,a),_=Math.max(t._selectionStart,a);if(!d)return t._selectionUpdated=!0,t._endSelection=!0,delete t._selectionStart,void t.render();t._selection[0]===i&&t._selection[1]===_||(t._selection=[i,_],t.render())}},mousedown:function(e,t){var n=t._mousePos(e),o=n.x,r=n.y,d=t._overInput(o,r);t._mouseDown=d,t._hasFocus&&d&&(t._selectionStart=t._clickPos(o,r))},mouseup:function(e,t){var n=t._mousePos(e),o=n.x,r=n.y,d=t._clickPos(o,r)!==t._selectionStart;t._hasFocus&&t._selectionStart>=0&&t._overInput(o,r)&&d?(t._selectionUpdated=!0,delete t._selectionStart,t.render()):delete t._selectionStart,t.click(e,t)},selectText:function(e){var t=this,e=e||[0,t._value.length];return setTimeout(function(){t._selection=[e[0],e[1]],t._hiddenInput.selectionStart=e[0],t._hiddenInput.selectionEnd=e[1],t.render()},1),t},renderCanvas:function(){return this._renderCanvas},render:function(){var e=this,t=e._renderCtx,n=e.outerW,o=e.outerH,r=e._borderRadius,d=e._borderWidth,a=e.shadowW,i=e.shadowH;t&&(t.clearRect(0,0,t.canvas.width,t.canvas.height),t.shadowOffsetX=e._boxShadow.x,t.shadowOffsetY=e._boxShadow.y,t.shadowBlur=e._boxShadow.blur,t.shadowColor=e._boxShadow.color,e._borderWidth>0&&(t.fillStyle=e._borderColor,e._roundedRect(t,e.shadowL,e.shadowT,n-a,o-i,r),t.fill(),t.shadowOffsetX=0,t.shadowOffsetY=0,t.shadowBlur=0),e._drawTextBox(function(){t.shadowOffsetX=0,t.shadowOffsetY=0,t.shadowBlur=0;var _=e._clipText(),u=e._padding+e._borderWidth+e.shadowT;if(e._selection[1]>0){var s=e._textWidth(_.substring(0,e._selection[0])),l=e._textWidth(_.substring(e._selection[0],e._selection[1]));t.fillStyle=e._selectionColor,t.fillRect(u+s,u,l,e._height)}if(e._cursor){var h=e._textWidth(_.substring(0,e._cursorPos));t.fillStyle=e._fontColor,t.fillRect(u+h,u,1,e._height)}var c=e._padding+e._borderWidth+e.shadowL,f=Math.round(u+e._height/2);_=""===_&&e._placeHolder?e._placeHolder:_,t.fillStyle=""!==e._value&&e._value!==e._placeHolder?e._fontColor:e._placeHolderColor,t.font=e._fontStyle+" "+e._fontWeight+" "+e._fontSize+"px "+e._fontFamily,t.shadowColor=e._fontShadowColor,t.shadowBlur=e._fontShadowBlur,t.shadowOffsetX=e._fontShadowOffsetX,t.shadowOffsetY=e._fontShadowOffsetY,t.textAlign="left",t.textBaseline="middle",t.fillText(_,c,f);var p=e._innerShadow.split("px "),v="none"===e._innerShadow?0:parseInt(p[0],10),w="none"===e._innerShadow?0:parseInt(p[1],10),x="none"===e._innerShadow?0:parseInt(p[2],10),b="none"===e._innerShadow?"":p[3];if(x>0){var g=e._shadowCtx,y=g.canvas.width,S=g.canvas.height;g.clearRect(0,0,y,S),g.shadowBlur=x,g.shadowColor=b,g.shadowOffsetX=0,g.shadowOffsetY=w,g.fillRect(-1*n,-100,3*n,100),g.shadowOffsetX=v,g.shadowOffsetY=0,g.fillRect(y,-1*o,100,3*o),g.shadowOffsetX=0,g.shadowOffsetY=w,g.fillRect(-1*n,S,3*n,100),g.shadowOffsetX=v,g.shadowOffsetY=0,g.fillRect(-100,-1*o,100,3*o),e._roundedRect(t,d+e.shadowL,d+e.shadowT,n-2*d-a,o-2*d-i,r),t.clip(),t.drawImage(e._shadowCanvas,0,0,y,S,d+e.shadowL,d+e.shadowT,y,S)}return e._ctx&&(e._ctx.clearRect(e._x,e._y,t.canvas.width,t.canvas.height),e._ctx.drawImage(e._renderCanvas,e._x,e._y)),e}))},destroy:function(){var t=this,n=e.indexOf(t);-1!=n&&e.splice(n,1),t._hasFocus&&t.blur(),document.body.removeChild(t._hiddenInput),t._renderCanvas=null,t._shadowCanvas=null,t._renderCtx=null},_drawTextBox:function(e){var t=this,n=t._renderCtx,o=t.outerW,r=t.outerH,d=t._borderRadius,a=t._borderWidth,i=t.shadowW,_=t.shadowH;if(""===t._backgroundImage)n.fillStyle=t._backgroundColor,t._roundedRect(n,a+t.shadowL,a+t.shadowT,o-2*a-i,r-2*a-_,d),n.fill(),e();else{var u=new Image;u.src=t._backgroundImage,u.onload=function(){n.drawImage(u,0,0,u.width,u.height,a+t.shadowL,a+t.shadowT,o,r),e()}}},_clearSelection:function(){var e=this;if(e._selection[1]>0){var t=e._selection[0],n=e._selection[1];return e._value=e._value.substr(0,t)+e._value.substr(n),e._cursorPos=t,e._cursorPos=e._cursorPos<0?0:e._cursorPos,e._selection=[0,0],!0}return!1},_clipText:function(e){var t=this;e="undefined"==typeof e?t._value:e;var n=t._textWidth(e),o=n/(t._width-t._padding),r=o>1?e.substr(-1*Math.floor(e.length/o)):e;return r+""},_textWidth:function(e){var t=this,n=t._renderCtx;return n.font=t._fontStyle+" "+t._fontWeight+" "+t._fontSize+"px "+t._fontFamily,n.textAlign="left",n.measureText(e).width},_calcWH:function(){var e=this;e.outerW=e._width+2*e._padding+2*e._borderWidth+e.shadowW,e.outerH=e._height+2*e._padding+2*e._borderWidth+e.shadowH},_updateCanvasWH:function(){var e=this,t=e._renderCanvas.width,n=e._renderCanvas.height;e._renderCanvas.setAttribute("width",e.outerW),e._renderCanvas.setAttribute("height",e.outerH),e._shadowCanvas.setAttribute("width",e._width+2*e._padding),e._shadowCanvas.setAttribute("height",e._height+2*e._padding),e._ctx&&e._ctx.clearRect(e._x,e._y,t,n)},_updateHiddenInput:function(){var e=this;e._hiddenInput.style.left=e._x+e._extraX+(e._canvas?e._canvas.offsetLeft:0)+"px",e._hiddenInput.style.top=e._y+e._extraY+(e._canvas?e._canvas.offsetTop:0)+"px",e._hiddenInput.style.width=e._width+2*e._padding+"px",e._hiddenInput.style.height=e._height+2*e._padding+"px"},_roundedRect:function(e,t,n,o,r,d){2*d>o&&(d=o/2),2*d>r&&(d=r/2),e.beginPath(),e.moveTo(t+d,n),e.lineTo(t+o-d,n),e.quadraticCurveTo(t+o,n,t+o,n+d),e.lineTo(t+o,n+r-d),e.quadraticCurveTo(t+o,n+r,t+o-d,n+r),e.lineTo(t+d,n+r),e.quadraticCurveTo(t,n+r,t,n+r-d),e.lineTo(t,n+d),e.quadraticCurveTo(t,n,t+d,n),e.closePath()},_overInput:function(e,t){var n=this,o=e>=n._x+n._extraX,r=e<=n._x+n._extraX+n._width+2*n._padding,d=t>=n._y+n._extraY,a=t<=n._y+n._extraY+n._height+2*n._padding;return o&&r&&d&&a},_clickPos:function(e){var t=this,n=t._value;t._value===t._placeHolder&&(n="");var o=t._clipText(n),r=0,d=o.length;if(e-(t._x+t._extraX)<t._textWidth(o))for(var a=0;a<o.length;a++)if(r+=t._textWidth(o[a]),r>=e-(t._x+t._extraX)){d=a;break}return d},_mousePos:function(e){var t=e.target,n=e.pageX,o=e.pageY;e.touches&&e.touches.length?(t=e.touches[0].target,n=e.touches[0].pageX,o=e.touches[0].pageY):e.changedTouches&&e.changedTouches.length&&(t=e.changedTouches[0].target,n=e.changedTouches[0].pageX,o=e.changedTouches[0].pageY);var r=document.defaultView.getComputedStyle(t,void 0),d=parseInt(r.paddingLeft,10)||0,a=parseInt(r.paddingLeft,10)||0,i=parseInt(r.borderLeftWidth,10)||0,_=parseInt(r.borderLeftWidth,10)||0,u=document.body.parentNode.offsetTop||0,s=document.body.parentNode.offsetLeft||0,l=0,h=0;if("undefined"!=typeof t.offsetParent)do l+=t.offsetLeft,h+=t.offsetTop;while(t=t.offsetParent);return l+=d+i+s,h+=a+_+u,{x:n-l,y:o-h}}}}();