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authorTristan Zur <tzur@web.web.ccwn.org>2014-03-27 22:27:47 +0100
committerTristan Zur <tzur@web.web.ccwn.org>2014-03-27 22:27:47 +0100
commitb62676ca5d3d6f6ba3f019ea3f99722e165a98d8 (patch)
tree86722cb80f07d4569f90088eeaea2fc2f6e2ef94 /js/dojo-1.7.2/dojox/charting/action2d/_IndicatorElement.js
Initial commit of intern.ccwn.org contentsHEADmaster
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+//>>built
+define("dojox/charting/action2d/_IndicatorElement", ["dojo/_base/lang", "dojo/_base/declare", "../Element", "../plot2d/common",
+ "../axis2d/common", "dojox/gfx"],
+ function(lang, declare, Element, dcpc, dcac, gfx){
+
+ // all the code below should be removed when http://trac.dojotoolkit.org/ticket/11299 will be available
+ var getBoundingBox = function(shape){
+ return getTextBBox(shape, shape.getShape().text);
+ };
+ var getTextBBox = function(s, t){
+ var c = s.declaredClass;
+ if (c.indexOf("svg")!=-1){
+ // try/catch the FF native getBBox error. cheaper than walking up in the DOM
+ // hierarchy to check the conditions (bench show /10 )
+ try {
+ return lang.mixin({}, s.rawNode.getBBox());
+ }catch (e){
+ return null;
+ }
+ }else if(c.indexOf("vml")!=-1){
+ var rawNode = s.rawNode, _display = rawNode.style.display;
+ rawNode.style.display = "inline";
+ var w = gfx.pt2px(parseFloat(rawNode.currentStyle.width));
+ var h = gfx.pt2px(parseFloat(rawNode.currentStyle.height));
+ var sz = {x: 0, y: 0, width: w, height: h};
+ // in VML, the width/height we get are in view coordinates
+ // in our case we don't zoom the view so that is ok
+ // It's impossible to get the x/y from the currentStyle.left/top,
+ // because all negative coordinates are 'clipped' to 0.
+ // (x:0 + translate(-100) -> x=0
+ computeLocation(s, sz);
+ rawNode.style.display = _display;
+ return sz;
+ }else if(c.indexOf("silverlight")!=-1){
+ var bb = {width: s.rawNode.actualWidth, height: s.rawNode.actualHeight};
+ return computeLocation(s, bb, 0.75);
+ }else if(s.getTextWidth){
+ // canvas
+ var w = s.getTextWidth();
+ var font = s.getFont();
+ var fz = font ? font.size : gfx.defaultFont.size;
+ var h = gfx.normalizedLength(fz);
+ sz = {width: w, height: h};
+ computeLocation(s, sz, 0.75);
+ return sz;
+ }
+ };
+ var computeLocation = function(s, sz, coef){
+ var width = sz.width, height = sz.height, sh = s.getShape(), align = sh.align;
+ switch (align) {
+ case "end":
+ sz.x = sh.x - width;
+ break;
+ case "middle":
+ sz.x = sh.x - width / 2;
+ break;
+ case "start":
+ default:
+ sz.x = sh.x;
+ break;
+ }
+ coef = coef || 1;
+ sz.y = sh.y - height*coef; // rough approximation of the ascent!...
+ return sz;
+ };
+
+ return declare("dojox.charting.action2d._IndicatorElement",[Element], {
+ // summary:
+ // Internal element used by indicator actions.
+ // tags:
+ // private
+ constructor: function(chart, kwArgs){
+ if(!kwArgs){ kwArgs = {}; }
+ this.inter = kwArgs.inter;
+ },
+ _updateVisibility: function(cp, limit, attr){
+ var axis = attr=="x"?this.inter.plot._hAxis:this.inter.plot._vAxis;
+ var scale = axis.getWindowScale();
+ this.chart.setAxisWindow(axis.name, scale, axis.getWindowOffset() + (cp[attr] - limit[attr]) / scale);
+ this._noDirty = true;
+ this.chart.render();
+ this._noDirty = false;
+ if(!this._tracker){
+ this.initTrack();
+ }
+ },
+ _trackMove: function(){
+ // let's update the selector
+ this._updateIndicator(this.pageCoord);
+ // if we reached that point once, then we don't stop until mouse up
+ if(this._initTrackPhase){
+ this._initTrackPhase = false;
+ this._tracker = setInterval(lang.hitch(this, this._trackMove), 100);
+ }
+ },
+ initTrack: function(){
+ this._initTrackPhase = true;
+ this._tracker = setTimeout(lang.hitch(this, this._trackMove), 500);
+ },
+ stopTrack: function(){
+ if(this._tracker){
+ if(this._initTrackPhase){
+ clearTimeout(this._tracker);
+ }else{
+ clearInterval(this._tracker);
+ }
+ this._tracker = null;
+ }
+ },
+ render: function(){
+ if(!this.isDirty()){
+ return;
+ }
+
+ this.cleanGroup();
+
+ if (!this.pageCoord){
+ return;
+ }
+
+ this._updateIndicator(this.pageCoord, this.secondCoord);
+ },
+ _updateIndicator: function(cp1, cp2){
+ var inter = this.inter, plot = inter.plot, v = inter.opt.vertical;
+ var hAxis = this.chart.getAxis(plot.hAxis), vAxis = this.chart.getAxis(plot.vAxis);
+ var hn = hAxis.name, vn = vAxis.name, hb = hAxis.getScaler().bounds, vb = vAxis.getScaler().bounds;
+ var attr = v?"x":"y", n = v?hn:vn, bounds = v?hb:vb;
+
+ // sort data point
+ if(cp2){
+ var tmp;
+ if(v){
+ if(cp1.x>cp2.x){
+ tmp = cp2;
+ cp2 = cp1;
+ cp1 = tmp;
+ }
+ }else{
+ if(cp1.y>cp2.y){
+ tmp = cp2;
+ cp2 = cp1;
+ cp1 = tmp;
+ }
+ }
+ }
+
+ var cd1 = plot.toData(cp1), cd2;
+ if(cp2){
+ cd2 = plot.toData(cp2);
+ }
+
+ var o = {};
+ o[hn] = hb.from;
+ o[vn] = vb.from;
+ var min = plot.toPage(o);
+ o[hn] = hb.to;
+ o[vn] = vb.to;
+ var max = plot.toPage(o);
+
+ if(cd1[n] < bounds.from){
+ // do not autoscroll if dual indicator
+ if(!cd2 && inter.opt.autoScroll){
+ this._updateVisibility(cp1, min, attr);
+ return;
+ }else{
+ cp1[attr] = min[attr];
+ }
+ // cp1 might have changed, let's update cd1
+ cd1 = plot.toData(cp1);
+ }else if(cd1[n] > bounds.to){
+ if(!cd2 && inter.opt.autoScroll){
+ this._updateVisibility(cp1, max, attr);
+ return;
+ }else{
+ cp1[attr] = max[attr];
+ }
+ // cp1 might have changed, let's update cd1
+ cd1 = plot.toData(cp1);
+ }
+
+ var c1 = this._getData(cd1, attr, v), c2;
+
+ if(c1.y == null){
+ // we have no data for that point let's just return
+ return;
+ }
+
+ if(cp2){
+ if(cd2[n] < bounds.from){
+ cp2[attr] = min[attr];
+ cd2 = plot.toData(cp2);
+ }else if(cd2[n] > bounds.to){
+ cp2[attr] = max[attr];
+ cd2 = plot.toData(cp2);
+ }
+ c2 = this._getData(cd2, attr, v);
+ if(c2.y == null){
+ // we have no data for that point let's pretend we have a single touch point
+ cp2 = null;
+ }
+ }
+
+ var t1 = this._renderIndicator(c1, cp2?1:0, hn, vn, min, max);
+ if(cp2){
+ var t2 = this._renderIndicator(c2, 2, hn, vn, min, max);
+ var delta = v?c2.y-c1.y:c2.x-c1.y;
+ var text = inter.opt.labelFunc?inter.opt.labelFunc(c1, c2, inter.opt.fixed, inter.opt.precision):
+ (dcpc.getLabel(delta, inter.opt.fixed, inter.opt.precision)+" ("+dcpc.getLabel(100*delta/(v?c1.y:c1.x), true, 2)+"%)");
+ this._renderText(text, inter, this.chart.theme, v?(t1.x+t2.x)/2:t1.x, v?t1.y:(t1.y+t2.y)/2, c1, c2);
+ };
+
+ },
+ _renderIndicator: function(coord, index, hn, vn, min, max){
+ var t = this.chart.theme, c = this.chart.getCoords(), inter = this.inter, plot = inter.plot, v = inter.opt.vertical;
+
+ var mark = {};
+ mark[hn] = coord.x;
+ mark[vn] = coord.y;
+ mark = plot.toPage(mark);
+
+ var cx = mark.x - c.x, cy = mark.y - c.y;
+ var x1 = v?cx:min.x - c.x, y1 = v?min.y - c.y:cy, x2 = v?x1:max.x - c.x, y2 = v?max.y - c.y:y1;
+ var sh = inter.opt.lineShadow?inter.opt.lineShadow:t.indicator.lineShadow,
+ ls = inter.opt.lineStroke?inter.opt.lineStroke:t.indicator.lineStroke,
+ ol = inter.opt.lineOutline?inter.opt.lineOutline:t.indicator.lineOutline;
+ if(sh){
+ this.group.createLine({x1: x1 + sh.dx, y1: y1 + sh.dy, x2: x2 + sh.dx, y2: y2 + sh.dy}).setStroke(sh);
+ }
+ if(ol){
+ ol = dcpc.makeStroke(ol);
+ ol.width = 2 * ol.width + ls.width;
+ this.group.createLine({x1: x1, y1: y1, x2: x2, y2: y2}).setStroke(ol);
+ }
+ this.group.createLine({x1: x1, y1: y1, x2: x2, y2: y2}).setStroke(ls);
+
+ var ms = inter.opt.markerSymbol?inter.opt.markerSymbol:t.indicator.markerSymbol,
+ path = "M" + cx + " " + cy + " " + ms;
+ sh = inter.opt.markerShadow?inter.opt.markerShadow:t.indicator.markerShadow;
+ ls = inter.opt.markerStroke?inter.opt.markerStroke:t.indicator.markerStroke;
+ ol = inter.opt.markerOutline?inter.opt.markerOutline:t.indicator.markerOutline;
+ if(sh){
+ var sp = "M" + (cx + sh.dx) + " " + (cy + sh.dy) + " " + ms;
+ this.group.createPath(sp).setFill(sh.color).setStroke(sh);
+ }
+ if(ol){
+ ol = dcpc.makeStroke(ol);
+ ol.width = 2 * ol.width + ls.width;
+ this.group.createPath(path).setStroke(ol);
+ }
+
+ var shape = this.group.createPath(path);
+ var sf = this._shapeFill(inter.opt.markerFill?inter.opt.markerFill:t.indicator.markerFill, shape.getBoundingBox());
+ shape.setFill(sf).setStroke(ls);
+
+ if(index==0){
+ var text = inter.opt.labelFunc?inter.opt.labelFunc(coord, null, inter.opt.fixed, inter.opt.precision):
+ dcpc.getLabel(v?coord.y:coord.x, inter.opt.fixed, inter.opt.precision);
+ this._renderText(text, inter, t, v?x1:x2+5, v?y2+5:y1, coord);
+ }else{
+ return v?{x: x1, y: y2+5}:{x: x2+5, y: y1};
+ }
+
+ },
+ _renderText: function(text, inter, t, x, y, c1, c2){
+ var label = dcac.createText.gfx(
+ this.chart,
+ this.group,
+ x, y,
+ "middle",
+ text, inter.opt.font?inter.opt.font:t.indicator.font, inter.opt.fontColor?inter.opt.fontColor:t.indicator.fontColor);
+ var b = getBoundingBox(label);
+ b.x-=2; b.y-=1; b.width+=4; b.height+=2; b.r = inter.opt.radius?inter.opt.radius:t.indicator.radius;
+ sh = inter.opt.shadow?inter.opt.shadow:t.indicator.shadow;
+ ls = inter.opt.stroke?inter.opt.stroke:t.indicator.stroke;
+ ol = inter.opt.outline?inter.opt.outline:t.indicator.outline;
+ if(sh){
+ this.group.createRect(b).setFill(sh.color).setStroke(sh);
+ }
+ if(ol){
+ ol = dcpc.makeStroke(ol);
+ ol.width = 2 * ol.width + ls.width;
+ this.group.createRect(b).setStroke(ol);
+ }
+ var f = inter.opt.fillFunc?inter.opt.fillFunc(c1, c2):(inter.opt.fill?inter.opt.fill:t.indicator.fill);
+ this.group.createRect(b).setFill(this._shapeFill(f, b)).setStroke(ls);
+ label.moveToFront();
+ },
+ _getData: function(cd, attr, v){
+ // we need to find which actual data point is "close" to the data value
+ var data = this.chart.getSeries(this.inter.opt.series).data;
+ // let's consider data are sorted because anyway rendering will be "weird" with unsorted data
+ // i is an index in the array, which is different from a x-axis value even for index based data
+ var i, r, l = data.length;
+ for (i = 0; i < l; ++i){
+ r = data[i];
+ if(r == null){
+ // move to next item
+ }else if(typeof r == "number"){
+ if(i + 1 > cd[attr]){
+ break;
+ }
+ }else if(r[attr] > cd[attr]){
+ break;
+ }
+ }
+ var x,y,px,py;
+ if(typeof r == "number"){
+ x = i+1;
+ y = r;
+ if(i>0){
+ px = i;
+ py = data[i-1];
+ }
+ }else{
+ x = r.x;
+ y = r.y;
+ if(i>0){
+ px = data[i-1].x;
+ py = data[i-1].y;
+ }
+ }
+ if(i>0){
+ var m = v?(x+px)/2:(y+py)/2;
+ if(cd[attr]<=m){
+ x = px;
+ y = py;
+ }
+ }
+ return {x: x, y: y};
+ },
+ cleanGroup: function(creator){
+ // summary:
+ // Clean any elements (HTML or GFX-based) out of our group, and create a new one.
+ // creator: dojox.gfx.Surface?
+ // An optional surface to work with.
+ // returns: dojox.charting.Element
+ // A reference to this object for functional chaining.
+ this.inherited(arguments);
+ // we always want to be above regular plots and not clipped
+ this.group.moveToFront();
+ return this; // dojox.charting.Element
+ },
+ clear: function(){
+ // summary:
+ // Clear out any parameters set on this plot.
+ // returns: dojox.charting.action2d._IndicatorElement
+ // The reference to this plot for functional chaining.
+ this.dirty = true;
+ return this; // dojox.charting.plot2d._IndicatorElement
+ },
+ getSeriesStats: function(){
+ // summary:
+ // Returns default stats (irrelevant for this type of plot).
+ // returns: Object
+ // {hmin, hmax, vmin, vmax} min/max in both directions.
+ return lang.delegate(dcpc.defaultStats);
+ },
+ initializeScalers: function(){
+ // summary:
+ // Does nothing (irrelevant for this type of plot).
+ return this;
+ },
+ isDirty: function(){
+ // summary:
+ // Return whether or not this plot needs to be redrawn.
+ // returns: Boolean
+ // If this plot needs to be rendered, this will return true.
+ return !this._noDirty && (this.dirty || this.inter.plot.isDirty());
+ }
+ });
+});