Chart.js/docs/samples/advanced/programmatic-events.md
Evert Timberg 66ee0fecaf
Vuepress samples (#8756)
* Generate API docs with vuepress-plugin-typedoc

* Links, fixes, cleanup

* Convert bar samples to Vuepress

* Some line chart samples moved over

* Fix lint issues

* Derived axis type sample

* LineAreaStacked chart created in vuepress

* added radar area axample

* Line dataset added sample

* final area example added

* Add derived-chart-type

* Bar scriptable sample

* Scriptable samples

* Clean lint errors

* added linear axis samples to vuepress

* change tab to spaces to fix lint error

* Convert the rest of the scale samples

* Scale option samples

* Fix typo

* Fixes

* Legend samples

* Title samples

* Change the title of the tip block to Note (#8758)

* Convert bar samples to Vuepress

* Some line chart samples moved over

* Fix lint issues

* Derived axis type sample

* LineAreaStacked chart created in vuepress

* added radar area axample

* Line dataset added sample

* final area example added

* Add derived-chart-type

* Bar scriptable sample

* Scriptable samples

* Clean lint errors

* added linear axis samples to vuepress

* change tab to spaces to fix lint error

* Convert the rest of the scale samples

* Scale option samples

* Fix typo

* Fixes

* Legend samples

* Advanced samples

* Remove extra section

* Animation samples

* Hide legend from progressive line

* Add a comment on what `from` does

* Tooltip samples

* Ädd other charts to vuepress samples

* enable plugin again since all samples have been converted

* fix skip radar example, middle skip was not calculated correctly

* lint error

* Progressive-line: add 2nd line

* Fix lint errors

Co-authored-by: Jukka Kurkela <jukka.kurkela@gmail.com>
Co-authored-by: Jacco van den Berg <jaccoberg2281@gmail.com>
Co-authored-by: Jacco van den Berg <39033624+LeeLenaleee@users.noreply.github.com>
2021-04-02 08:04:39 -04:00

2.0 KiB

Programmatic Event Triggers

// <block:hover:0>
function triggerHover(chart) {
  if (chart.getActiveElements().length > 0) {
    chart.setActiveElements([]);
  } else {
    chart.setActiveElements([
      {
        datasetIndex: 0,
        index: 0,
      }, {
        datasetIndex: 1,
        index: 0,
      }
    ]);
  }
  chart.update();
}
// </block:hover>

// <block:tooltip:1>
function triggerTooltip(chart) {
  const tooltip = chart.tooltip;
  if (tooltip.getActiveElements().length > 0) {
    tooltip.setActiveElements([], {x: 0, y: 0});
  } else {
    const chartArea = chart.chartArea;
    tooltip.setActiveElements([
      {
        datasetIndex: 0,
        index: 2,
      }, {
        datasetIndex: 1,
        index: 2,
      }
    ],
    {
      x: (chartArea.left + chartArea.right) / 2,
      y: (chartArea.top + chartArea.bottom) / 2,
    });
  }

  chart.update();
}
// </block:tooltip>

// <block:actions:2>
const actions = [
  {
    name: 'Trigger Hover',
    handler: triggerHover
  },
  {
    name: 'Trigger Tooltip',
    handler: triggerTooltip
  }
];
// </block:actions>

// <block:setup:4>
const DATA_COUNT = 7;
const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100};

const labels = Utils.months({count: 7});
const data = {
  labels: labels,
  datasets: [
    {
      label: 'Dataset 1',
      data: Utils.numbers(NUMBER_CFG),
      borderColor: Utils.CHART_COLORS.red,
      backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5),
      hoverBorderWidth: 5,
      hoverBorderColor: 'green',
    },
    {
      label: 'Dataset 2',
      data: Utils.numbers(NUMBER_CFG),
      borderColor: Utils.CHART_COLORS.blue,
      backgroundColor: Utils.transparentize(Utils.CHART_COLORS.blue, 0.5),
      hoverBorderWidth: 5,
      hoverBorderColor: 'green',
    }
  ]
};
// </block:setup>

// <block:config:3>
const config = {
  type: 'bar',
  data: data,
  options: {
  },
};
// </block:config>

module.exports = {
  actions: actions,
  config: config,
};