102 lines
2.3 KiB
JavaScript
102 lines
2.3 KiB
JavaScript
Rickshaw.namespace('Rickshaw.Graph.Renderer.Area');
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Rickshaw.Graph.Renderer.Area = Rickshaw.Class.create( Rickshaw.Graph.Renderer, {
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name: 'area',
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defaults: function($super) {
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return Rickshaw.extend( $super(), {
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unstack: false,
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fill: false,
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stroke: false
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} );
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},
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seriesPathFactory: function() {
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var graph = this.graph;
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var factory = d3.svg.area()
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.x( function(d) { return graph.x(d.x) } )
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.y0( function(d) { return graph.y(d.y0) } )
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.y1( function(d) { return graph.y(d.y + d.y0) } )
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.interpolate(graph.interpolation).tension(this.tension);
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factory.defined && factory.defined( function(d) { return d.y !== null } );
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return factory;
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},
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seriesStrokeFactory: function() {
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var graph = this.graph;
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var factory = d3.svg.line()
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.x( function(d) { return graph.x(d.x) } )
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.y( function(d) { return graph.y(d.y + d.y0) } )
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.interpolate(graph.interpolation).tension(this.tension);
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factory.defined && factory.defined( function(d) { return d.y !== null } );
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return factory;
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},
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render: function(args) {
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args = args || {};
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var graph = this.graph;
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var series = args.series || graph.series;
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var vis = args.vis || graph.vis;
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vis.selectAll('*').remove();
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// insert or stacked areas so strokes lay on top of areas
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var method = this.unstack ? 'append' : 'insert';
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var data = series
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.filter(function(s) { return !s.disabled })
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.map(function(s) { return s.stack });
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var nodes = vis.selectAll("path")
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.data(data)
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.enter()[method]("svg:g", 'g');
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nodes.append("svg:path")
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.attr("d", this.seriesPathFactory())
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.attr("class", 'area');
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if (this.stroke) {
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nodes.append("svg:path")
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.attr("d", this.seriesStrokeFactory())
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.attr("class", 'line');
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}
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var i = 0;
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series.forEach( function(series) {
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if (series.disabled) return;
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series.path = nodes[0][i++];
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this._styleSeries(series);
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}, this );
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},
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_styleSeries: function(series) {
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if (!series.path) return;
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d3.select(series.path).select('.area')
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.attr('fill', series.color);
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if (this.stroke) {
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d3.select(series.path).select('.line')
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.attr('fill', 'none')
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.attr('stroke', series.stroke || d3.interpolateRgb(series.color, 'black')(0.125))
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.attr('stroke-width', this.strokeWidth);
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}
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if (series.className) {
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series.path.setAttribute('class', series.className);
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}
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}
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} );
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