ng2-charts
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Reactive, responsive, beautiful charts for Angular2 based on Chart.js
168 lines • 13.5 kB
JavaScript
/**
* @fileoverview added by tsickle
* Generated from: lib/get-colors.ts
* @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { defaultColors } from './default-colors';
/**
* Generate colors by chart type
* @param {?} chartType
* @param {?} index
* @param {?} count
* @return {?}
*/
export function getColors(chartType, index, count) {
if (chartType === 'pie' || chartType === 'doughnut') {
return formatPieColors(generateColors(count));
}
if (chartType === 'polarArea') {
return formatPolarAreaColors(generateColors(count));
}
if (chartType === 'line' || chartType === 'radar') {
return formatLineColor(generateColor(index));
}
if (chartType === 'bar' || chartType === 'horizontalBar') {
return formatBarColor(generateColor(index));
}
if (chartType === 'bubble') {
return formatPieColors(generateColors(count));
}
if (chartType === 'scatter') {
return formatPieColors(generateColors(count));
}
throw new Error(`getColors - Unsupported chart type ${chartType}`);
}
/**
* @param {?} colour
* @param {?} alpha
* @return {?}
*/
function rgba(colour, alpha) {
return 'rgba(' + colour.concat(alpha).join(',') + ')';
}
/**
* @param {?} min
* @param {?} max
* @return {?}
*/
function getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
/**
* @param {?} colors
* @return {?}
*/
function formatLineColor(colors) {
return {
backgroundColor: rgba(colors, 0.4),
borderColor: rgba(colors, 1),
pointBackgroundColor: rgba(colors, 1),
pointBorderColor: '#fff',
pointHoverBackgroundColor: '#fff',
pointHoverBorderColor: rgba(colors, 0.8)
};
}
/**
* @param {?} colors
* @return {?}
*/
function formatBarColor(colors) {
return {
backgroundColor: rgba(colors, 0.6),
borderColor: rgba(colors, 1),
hoverBackgroundColor: rgba(colors, 0.8),
hoverBorderColor: rgba(colors, 1)
};
}
/**
* @param {?} colors
* @return {?}
*/
function formatPieColors(colors) {
return {
backgroundColor: colors.map((/**
* @param {?} color
* @return {?}
*/
(color) => rgba(color, 0.6))),
borderColor: colors.map((/**
* @return {?}
*/
() => '#fff')),
pointBackgroundColor: colors.map((/**
* @param {?} color
* @return {?}
*/
(color) => rgba(color, 1))),
pointBorderColor: colors.map((/**
* @return {?}
*/
() => '#fff')),
pointHoverBackgroundColor: colors.map((/**
* @param {?} color
* @return {?}
*/
(color) => rgba(color, 1))),
pointHoverBorderColor: colors.map((/**
* @param {?} color
* @return {?}
*/
(color) => rgba(color, 1)))
};
}
/**
* @param {?} colors
* @return {?}
*/
function formatPolarAreaColors(colors) {
return {
backgroundColor: colors.map((/**
* @param {?} color
* @return {?}
*/
(color) => rgba(color, 0.6))),
borderColor: colors.map((/**
* @param {?} color
* @return {?}
*/
(color) => rgba(color, 1))),
hoverBackgroundColor: colors.map((/**
* @param {?} color
* @return {?}
*/
(color) => rgba(color, 0.8))),
hoverBorderColor: colors.map((/**
* @param {?} color
* @return {?}
*/
(color) => rgba(color, 1)))
};
}
/**
* @return {?}
*/
function getRandomColor() {
return [getRandomInt(0, 255), getRandomInt(0, 255), getRandomInt(0, 255)];
}
/**
* Generate colors for line|bar charts
* @param {?} index
* @return {?}
*/
function generateColor(index) {
return defaultColors[index] || getRandomColor();
}
/**
* Generate colors for pie|doughnut charts
* @param {?} count
* @return {?}
*/
function generateColors(count) {
/** @type {?} */
const colorsArr = new Array(count);
for (let i = 0; i < count; i++) {
colorsArr[i] = defaultColors[i] || getRandomColor();
}
return colorsArr;
}
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Unsupported chart type ${chartType}`);\r\n}\r\n\r\nfunction rgba(colour: Array<number>, alpha: number): string {\r\n  return 'rgba(' + colour.concat(alpha).join(',') + ')';\r\n}\r\n\r\nfunction getRandomInt(min: number, max: number): number {\r\n  return Math.floor(Math.random() * (max - min + 1)) + min;\r\n}\r\n\r\nfunction formatLineColor(colors: Array<number>): Color {\r\n  return {\r\n    backgroundColor: rgba(colors, 0.4),\r\n    borderColor: rgba(colors, 1),\r\n    pointBackgroundColor: rgba(colors, 1),\r\n    pointBorderColor: '#fff',\r\n    pointHoverBackgroundColor: '#fff',\r\n    pointHoverBorderColor: rgba(colors, 0.8)\r\n  };\r\n}\r\n\r\nfunction formatBarColor(colors: Array<number>): Color {\r\n  return {\r\n    backgroundColor: rgba(colors, 0.6),\r\n    borderColor: rgba(colors, 1),\r\n    hoverBackgroundColor: rgba(colors, 0.8),\r\n    hoverBorderColor: rgba(colors, 1)\r\n  };\r\n}\r\n\r\nfunction formatPieColors(colors: Array<number[]>): Colors {\r\n  return {\r\n    backgroundColor: colors.map((color: number[]) => rgba(color, 0.6)),\r\n    borderColor: colors.map(() => '#fff'),\r\n    pointBackgroundColor: colors.map((color: number[]) => rgba(color, 1)),\r\n    pointBorderColor: colors.map(() => '#fff'),\r\n    pointHoverBackgroundColor: colors.map((color: number[]) => rgba(color, 1)),\r\n    pointHoverBorderColor: colors.map((color: number[]) => rgba(color, 1))\r\n  };\r\n}\r\n\r\nfunction formatPolarAreaColors(colors: Array<number[]>): Color {\r\n  return {\r\n    backgroundColor: colors.map((color: number[]) => rgba(color, 0.6)),\r\n    borderColor: colors.map((color: number[]) => rgba(color, 1)),\r\n    hoverBackgroundColor: colors.map((color: number[]) => rgba(color, 0.8)),\r\n    hoverBorderColor: colors.map((color: number[]) => rgba(color, 1))\r\n  };\r\n}\r\n\r\nfunction getRandomColor(): number[] {\r\n  return [getRandomInt(0, 255), getRandomInt(0, 255), getRandomInt(0, 255)];\r\n}\r\n\r\n/**\r\n * Generate colors for line|bar charts\r\n */\r\nfunction generateColor(index: number): number[] {\r\n  return defaultColors[index] || getRandomColor();\r\n}\r\n\r\n/**\r\n * Generate colors for pie|doughnut charts\r\n */\r\nfunction generateColors(count: number): Array<number[]> {\r\n  const colorsArr: Array<number[]> = new Array(count);\r\n  for (let i = 0; i < count; i++) {\r\n    colorsArr[i] = defaultColors[i] || getRandomColor();\r\n  }\r\n  return colorsArr;\r\n}\r\n"]}