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'); this.$.wrap(this.$div).before(this.$c); this.$div = this.$.parent(); if (typeof G_vmlCanvasManager !== 'undefined') { G_vmlCanvasManager.initElement(this.$c[0]); } this.c = this.$c[0].getContext ? this.$c[0].getContext('2d') : null; if (!this.c) { throw { name: "CanvasNotSupportedException", message: "Canvas not supported. Please use excanvas on IE8.0.", toString: function(){return this.name + ": " + this.message} } } // hdpi support this.scale = (window.devicePixelRatio || 1) / ( this.c.webkitBackingStorePixelRatio || this.c.mozBackingStorePixelRatio || this.c.msBackingStorePixelRatio || this.c.oBackingStorePixelRatio || this.c.backingStorePixelRatio || 1 ); // detects relative width / height this.relativeWidth = this.o.width % 1 !== 0 && this.o.width.indexOf('%'); this.relativeHeight = this.o.height % 1 !== 0 && this.o.height.indexOf('%'); this.relative = this.relativeWidth || this.relativeHeight; // computes size and carves the component this._carve(); // prepares props for transaction if (this.v instanceof Object) { this.cv = {}; this.copy(this.v, this.cv); } else { this.cv = this.v; } // binds configure event this.$ .bind("configure", cf) .parent() .bind("configure", cf); // finalize init this._listen() ._configure() ._xy() .init(); this.isInit = true; this.$.val(this.o.format(this.v)); this._draw(); return this; }; this._carve = function() { if (this.relative) { var w = this.relativeWidth ? this.$div.parent().width() * parseInt(this.o.width) / 100 : this.$div.parent().width(), h = this.relativeHeight ? this.$div.parent().height() * parseInt(this.o.height) / 100 : this.$div.parent().height(); // apply relative this.w = this.h = Math.min(w, h); } else { this.w = this.o.width; this.h = this.o.height; } // finalize div this.$div.css({ 'width': this.w + 'px', 'height': this.h + 'px' }); // finalize canvas with computed width this.$c.attr({ width: this.w, height: this.h }); // scaling if (this.scale !== 1) { this.$c[0].width = this.$c[0].width * this.scale; this.$c[0].height = this.$c[0].height * this.scale; this.$c.width(this.w); this.$c.height(this.h); } return this; } this._draw = function () { // canvas pre-rendering var d = true; s.g = s.c; s.clear(); s.dH && (d = s.dH()); d !== false && s.draw(); }; this._touch = function (e) { var touchMove = function (e) { var v = s.xy2val( e.originalEvent.touches[s.t].pageX, e.originalEvent.touches[s.t].pageY ); if (v == s.cv) return; if (s.cH && s.cH(v) === false) return; s.change(s._validate(v)); s._draw(); }; // get touches index this.t = k.c.t(e); // First touch touchMove(e); // Touch events listeners k.c.d .bind("touchmove.k", touchMove) .bind( "touchend.k", function () { k.c.d.unbind('touchmove.k touchend.k'); s.val(s.cv); } ); return this; }; this._mouse = function (e) { var mouseMove = function (e) { var v = s.xy2val(e.pageX, e.pageY); if (v == s.cv) return; if (s.cH && (s.cH(v) === false)) return; s.change(s._validate(v)); s._draw(); }; // First click mouseMove(e); // Mouse events listeners k.c.d .bind("mousemove.k", mouseMove) .bind( // Escape key cancel current change "keyup.k", function (e) { if (e.keyCode === 27) { k.c.d.unbind("mouseup.k mousemove.k keyup.k"); if (s.eH && s.eH() === false) return; s.cancel(); } } ) .bind( "mouseup.k", function (e) { k.c.d.unbind('mousemove.k mouseup.k keyup.k'); s.val(s.cv); } ); return this; }; this._xy = function () { var o = this.$c.offset(); this.x = o.left; this.y = o.top; return this; }; this._listen = function () { if (!this.o.readOnly) { this.$c .bind( "mousedown", function (e) { e.preventDefault(); s._xy()._mouse(e); } ) .bind( "touchstart", function (e) { e.preventDefault(); s._xy()._touch(e); } ); this.listen(); } else { this.$.attr('readonly', 'readonly'); } if (this.relative) { $(window).resize(function() { s._carve().init(); s._draw(); }); } return this; }; this._configure = function () { // Hooks if (this.o.draw) this.dH = this.o.draw; if (this.o.change) this.cH = this.o.change; if (this.o.cancel) this.eH = this.o.cancel; if (this.o.release) this.rH = this.o.release; if (this.o.displayPrevious) { this.pColor = this.h2rgba(this.o.fgColor, "0.4"); this.fgColor = this.h2rgba(this.o.fgColor, "0.6"); } else { this.fgColor = this.o.fgColor; } return this; }; this._clear = function () { this.$c[0].width = this.$c[0].width; }; this._validate = function (v) { var val = (~~ (((v < 0) ? -0.5 : 0.5) + (v/this.o.step))) * this.o.step; return Math.round(val * 100) / 100; }; // Abstract methods this.listen = function () {}; // on start, one time this.extend = function () {}; // each time configure triggered this.init = function () {}; // each time configure triggered this.change = function (v) {}; // on change this.val = function (v) {}; // on release this.xy2val = function (x, y) {}; // this.draw = function () {}; // on change / on release this.clear = function () { this._clear(); }; // Utils this.h2rgba = function (h, a) { var rgb; h = h.substring(1,7) rgb = [ parseInt(h.substring(0,2), 16), parseInt(h.substring(2,4), 16), parseInt(h.substring(4,6), 16) ]; return "rgba(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + "," + a + ")"; }; this.copy = function (f, t) { for (var i in f) { t[i] = f[i]; } }; }; /** * k.Dial */ k.Dial = function () { k.o.call(this); this.startAngle = null; this.xy = null; this.radius = null; this.lineWidth = null; this.cursorExt = null; this.w2 = null; this.PI2 = 2*Math.PI; this.extend = function () { this.o = $.extend({ bgColor: this.$.data('bgcolor') || '#EEEEEE', angleOffset: this.$.data('angleoffset') || 0, angleArc: this.$.data('anglearc') || 360, inline: true }, this.o); }; this.val = function (v, triggerRelease) { if (null != v) { // reverse format v = this.o.parse(v); if (triggerRelease !== false && v != this.v && this.rH && this.rH(v) === false) { return; } this.cv = this.o.stopper ? max(min(v, this.o.max), this.o.min) : v; this.v = this.cv; this.$.val(this.o.format(this.v)); this._draw(); } else { return this.v; } }; this.xy2val = function (x, y) { var a, ret; a = Math.atan2( x - (this.x + this.w2), - (y - this.y - this.w2) ) - this.angleOffset; if (this.o.flip) { a = this.angleArc - a - this.PI2; } if (this.angleArc != this.PI2 && (a < 0) && (a > -0.5)) { // if isset angleArc option, set to min if .5 under min a = 0; } else if (a < 0) { a += this.PI2; } ret = (a * (this.o.max - this.o.min) / this.angleArc) + this.o.min; this.o.stopper && (ret = max(min(ret, this.o.max), this.o.min)); return ret; }; this.listen = function () { // bind MouseWheel var s = this, mwTimerStop, mwTimerRelease, mw = function (e) { e.preventDefault(); var ori = e.originalEvent, deltaX = ori.detail || ori.wheelDeltaX, deltaY = ori.detail || ori.wheelDeltaY, v = s._validate(s.o.parse(s.$.val())) + ( deltaX > 0 || deltaY > 0 ? s.o.step : deltaX < 0 || deltaY < 0 ? -s.o.step : 0 ); v = max(min(v, s.o.max), s.o.min); s.val(v, false); if (s.rH) { // Handle mousewheel stop clearTimeout(mwTimerStop); mwTimerStop = setTimeout(function () { s.rH(v); mwTimerStop = null; }, 100); // Handle mousewheel releases if (!mwTimerRelease) { mwTimerRelease = setTimeout(function () { if (mwTimerStop) s.rH(v); mwTimerRelease = null; }, 200); } } }, kval, to, m = 1, kv = { 37: -s.o.step, 38: s.o.step, 39: s.o.step, 40: -s.o.step }; this.$ .bind( "keydown", function (e) { var kc = e.keyCode; // numpad support if (kc >= 96 && kc <= 105) { kc = e.keyCode = kc - 48; } kval = parseInt(String.fromCharCode(kc)); if (isNaN(kval)) { (kc !== 13) // enter && kc !== 8 // bs && kc !== 9 // tab && kc !== 189 // - && (kc !== 190 || s.$.val().match(/\./)) // . allowed once && e.preventDefault(); // arrows if ($.inArray(kc,[37,38,39,40]) > -1) { e.preventDefault(); var v = s.o.parse(s.$.val()) + kv[kc] * m; s.o.stopper && (v = max(min(v, s.o.max), s.o.min)); s.change(s._validate(v)); s._draw(); // long time keydown speed-up to = window.setTimeout(function () { m *= 2; }, 30); } } } ) .bind( "keyup", function (e) { if (isNaN(kval)) { if (to) { window.clearTimeout(to); to = null; m = 1; s.val(s.$.val()); } } else { // kval postcond (s.$.val() > s.o.max && s.$.val(s.o.max)) || (s.$.val() < s.o.min && s.$.val(s.o.min)); } } ); this.$c.bind("mousewheel DOMMouseScroll", mw); this.$.bind("mousewheel DOMMouseScroll", mw) }; this.init = function () { if (this.v < this.o.min || this.v > this.o.max) { this.v = this.o.min; } this.$.val(this.v); this.w2 = this.w / 2; this.cursorExt = this.o.cursor / 100; this.xy = this.w2 * this.scale; this.lineWidth = this.xy * this.o.thickness; this.lineCap = this.o.lineCap; this.radius = this.xy - this.lineWidth / 2; this.o.angleOffset && (this.o.angleOffset = isNaN(this.o.angleOffset) ? 0 : this.o.angleOffset); this.o.angleArc && (this.o.angleArc = isNaN(this.o.angleArc) ? this.PI2 : this.o.angleArc); // deg to rad this.angleOffset = this.o.angleOffset * Math.PI / 180; this.angleArc = this.o.angleArc * Math.PI / 180; // compute start and end angles this.startAngle = 1.5 * Math.PI + this.angleOffset; this.endAngle = 1.5 * Math.PI + this.angleOffset + this.angleArc; var s = max( String(Math.abs(this.o.max)).length, String(Math.abs(this.o.min)).length, 2 ) + 2; this.o.displayInput && this.i.css({ 'width' : ((this.w / 2 + 4) >> 0) + 'px', 'height' : ((this.w / 3) >> 0) + 'px', 'position' : 'absolute', 'vertical-align' : 'middle', 'margin-top' : ((this.w / 3) >> 0) + 'px', 'margin-left' : '-' + ((this.w * 3 / 4 + 2) >> 0) + 'px', 'border' : 0, 'background' : 'none', 'font' : this.o.fontWeight + ' ' + ((this.w / s) >> 0) + 'px ' + this.o.font, 'text-align' : 'center', 'color' : this.o.inputColor || this.o.fgColor, 'padding' : '0px', '-webkit-appearance': 'none' }) || this.i.css({ 'width': '0px', 'visibility': 'hidden' }); }; this.change = function (v) { this.cv = v; this.$.val(this.o.format(v)); }; this.angle = function (v) { return (v - this.o.min) * this.angleArc / (this.o.max - this.o.min); }; this.arc = function (v) { var sa, ea; v = this.angle(v); if (this.o.flip) { sa = this.endAngle + 0.00001; ea = sa - v - 0.00001; } else { sa = this.startAngle - 0.00001; ea = sa + v + 0.00001; } this.o.cursor && (sa = ea - this.cursorExt) && (ea = ea + this.cursorExt); return { s: sa, e: ea, d: this.o.flip && !this.o.cursor }; }; this.draw = function () { var c = this.g, // context a = this.arc(this.cv), // Arc pa, // Previous arc r = 1; c.lineWidth = this.lineWidth; c.lineCap = this.lineCap; if (this.o.bgColor !== "none") { c.beginPath(); c.strokeStyle = this.o.bgColor; c.arc(this.xy, this.xy, this.radius, this.endAngle - 0.00001, this.startAngle + 0.00001, true); c.stroke(); } if (this.o.displayPrevious) { pa = this.arc(this.v); c.beginPath(); c.strokeStyle = this.pColor; c.arc(this.xy, this.xy, this.radius, pa.s, pa.e, pa.d); c.stroke(); r = this.cv == this.v; } c.beginPath(); c.strokeStyle = r ? this.o.fgColor : this.fgColor ; c.arc(this.xy, this.xy, this.radius, a.s, a.e, a.d); c.stroke(); }; this.cancel = function () { this.val(this.v); }; }; $.fn.dial = $.fn.knob = function (o) { return this.each( function () { var d = new k.Dial(); d.o = o; d.$ = $(this); d.run(); } ).parent(); }; }));