UNPKG

@gravity-ui/graph

Version:

Modern graph editor component

github.com/gravity-ui/graph

gravity-ui/graph

22 lines (21 loc) • 1.03 kB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
/** * Applies alpha (opacity) to a color string. * This is useful as an alternative to using ctx.globalAlpha, which affects all drawing operations. * Instead, you can apply opacity directly to specific colors. * * @param color - Color in any valid CSS format (hex, rgb, rgba, hsl, hsla, named colors) * @param alpha - Alpha value between 0 (fully transparent) and 1 (fully opaque) * @returns Color string in rgba format with applied alpha * * @example * applyAlpha('#ff0000', 0.5) // returns 'rgba(255, 0, 0, 0.5)' * applyAlpha('rgb(255, 0, 0)', 0.5) // returns 'rgba(255, 0, 0, 0.5)' * applyAlpha('rgba(255, 0, 0, 0.8)', 0.5) // returns 'rgba(255, 0, 0, 0.4)' - multiplies existing alpha * applyAlpha('red', 0.5) // returns 'rgba(255, 0, 0, 0.5)' */ export declare function applyAlpha(color: string, alpha: number): string; /** * Clears the color cache to free up memory. * Use this if you've processed a large number of unique colors and want to reclaim memory. */ export declare function clearColorCache(): void;