| <!DOCTYPE html> |
| <!-- |
| Copyright (c) 2014 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <link rel="import" href="/tracing/base/raf.html"> |
| <link rel="import" href="/tracing/ui/base/bar_chart.html"> |
| <link rel="import" href="/tracing/ui/base/d3.html"> |
| |
| <script> |
| 'use strict'; |
| |
| tr.exportTo('tr.ui.b', function() { |
| var NameBarChart = tr.ui.b.define('name-bar-chart', tr.ui.b.BarChart); |
| |
| var Y_AXIS_PADDING = 2; |
| |
| NameBarChart.prototype = { |
| __proto__: tr.ui.b.BarChart.prototype, |
| |
| getDataPointAtChartPoint_(chartPoint) { |
| return { |
| x: tr.ui.b.BarChart.prototype.getDataPointAtChartPoint_.call( |
| this, chartPoint).x, |
| y: parseInt(Math.floor( |
| (this.graphHeight - chartPoint.y) / this.barHeight)) |
| }; |
| }, |
| |
| getXForDatum_(datum, index) { |
| return index; |
| }, |
| |
| get yAxisWidth() { |
| if (this.data.length === 0) return 0; |
| return Y_AXIS_PADDING + tr.b.math.Statistics.max( |
| this.data_, d => tr.ui.b.getSVGTextSize(this, d.x).width); |
| }, |
| |
| get defaultGraphHeight() { |
| return (3 + this.textHeightPx_) * this.data.length; |
| }, |
| |
| updateYAxis_(yAxis) { |
| // Building the y-axis requires measuring text. |
| // If necessary, wait for this element to be displayed. |
| if (tr.ui.b.getSVGTextSize(this, 'test').width === 0) { |
| tr.b.requestAnimationFrame(() => this.updateYAxis_(yAxis)); |
| return; |
| } |
| |
| // When we can measure text, we're ready to build the y-axis. |
| yAxis.selectAll('*').remove(); |
| var nameTexts = yAxis.selectAll('text').data(this.data_); |
| nameTexts |
| .enter() |
| .append('text') |
| .attr('x', d => -( |
| tr.ui.b.getSVGTextSize(this, d.x).width + Y_AXIS_PADDING)) |
| .attr('y', (d, index) => this.verticalScale_(index)) |
| .text(d => d.x); |
| nameTexts.exit().remove(); |
| |
| var previousTop = undefined; |
| for (var text of nameTexts[0]) { |
| var bbox = text.getBBox(); |
| if ((previousTop === undefined) || |
| (previousTop > (bbox.y + bbox.height))) { |
| previousTop = bbox.y; |
| } else { |
| text.style.opacity = 0; |
| } |
| } |
| } |
| }; |
| |
| return { |
| NameBarChart, |
| }; |
| }); |
| </script> |
