mirror.html 3.3 KB

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  1. <!DOCTYPE html>
  2. <html lang="en-US">
  3. <head>
  4. <meta charset="utf-8">
  5. <meta http-equiv="X-UA-Compatible" content="IE=Edge">
  6. <meta name="viewport" content="width=device-width, initial-scale=1">
  7. <link rel="stylesheet" type="text/css" href="../style.css">
  8. <link rel="icon" type="image/ico" href="../favicon.ico">
  9. <script src="https://cdn.jsdelivr.net/npm/chart.js@2.7.0/dist/Chart.min.js"></script>
  10. <script src="../../dist/chartjs-plugin-datalabels.js"></script>
  11. <script src="../utils.js"></script>
  12. </head>
  13. <body>
  14. <div id="side">
  15. <div id="header"></div>
  16. <div id="actions">
  17. <button onclick="randomize(this)">Randomize</button>
  18. <button onclick="addData(this)">Add Data</button>
  19. <button onclick="removeData(this)">Remove Data</button>
  20. </div>
  21. </div>
  22. <div id="charts">
  23. <div class="wrapper"><canvas id="chart-0"></canvas></div>
  24. </div>
  25. <script>
  26. var SAMPLE_INFO = {
  27. group: 'Scriptable',
  28. name: 'Mirror',
  29. desc: 'The <em>anchor</em>, <em>align</em> and <em>rotation</em> ' +
  30. 'options are mirrored around the horizontal scale origin.'
  31. };
  32. </script>
  33. <script id="script-init">
  34. var DATA_COUNT = 16;
  35. var labels = [];
  36. Samples.srand(0);
  37. for (var i = 0; i < DATA_COUNT; ++i) {
  38. labels.push('' + i);
  39. }
  40. Chart.helpers.merge(Chart.defaults.global, {
  41. aspectRatio: 4/3,
  42. tooltips: false,
  43. layout: {
  44. padding: {
  45. top: 32,
  46. right: 24,
  47. bottom: 32,
  48. left: 0
  49. }
  50. },
  51. elements: {
  52. line: {
  53. fill: false
  54. },
  55. point: {
  56. hoverRadius: 7,
  57. radius: 5
  58. }
  59. },
  60. plugins: {
  61. legend: false,
  62. title: false
  63. }
  64. });
  65. </script>
  66. <script id="script-construct">
  67. var chart = new Chart('chart-0', {
  68. type: 'bar',
  69. data: {
  70. labels: labels,
  71. datasets: [{
  72. backgroundColor: Samples.color(0),
  73. borderColor: Samples.color(0),
  74. data: Samples.numbers({
  75. count: DATA_COUNT,
  76. min: -100,
  77. max: 100
  78. })
  79. }]
  80. },
  81. options: {
  82. plugins: {
  83. datalabels: {
  84. align: function(context) {
  85. var value = context.dataset.data[context.dataIndex];
  86. return value > 0 ? 'end' : 'start';
  87. },
  88. anchor: function(context) {
  89. var value = context.dataset.data[context.dataIndex];
  90. return value > 0 ? 'end' : 'start';
  91. },
  92. rotation: function(context) {
  93. var value = context.dataset.data[context.dataIndex];
  94. return value > 0 ? 45 : 180 - 45;
  95. },
  96. backgroundColor: function(context) {
  97. return context.dataset.backgroundColor;
  98. },
  99. borderRadius: 4,
  100. color: 'white',
  101. formatter: Math.round
  102. }
  103. }
  104. }
  105. });
  106. </script>
  107. <script id="script-actions">
  108. function randomize() {
  109. chart.data.datasets.forEach(function(dataset, i) {
  110. dataset.backgroundColor = dataset.borderColor = Samples.color();
  111. dataset.data = dataset.data.map(function(value) {
  112. return Samples.rand(-100, 100);
  113. });
  114. });
  115. chart.update();
  116. }
  117. function addData() {
  118. chart.data.labels.push(chart.data.labels.length);
  119. chart.data.datasets.forEach(function(dataset, i) {
  120. dataset.data.push(Samples.rand(-100, 100));
  121. });
  122. chart.update();
  123. }
  124. function removeData() {
  125. chart.data.labels.shift();
  126. chart.data.datasets.forEach(function(dataset, i) {
  127. dataset.data.shift();
  128. });
  129. chart.update();
  130. }
  131. </script>
  132. </body>
  133. </html>