--- /dev/null
+/**
+ * Copyright (c) 2017 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { ICharAtlasConfig } from 'browser/renderer/atlas/Types';
+import { DEFAULT_COLOR } from 'common/buffer/Constants';
+import { IColorSet, IPartialColorSet } from 'browser/Types';
+import { ITerminalOptions } from 'common/services/Services';
+
+export function generateConfig(scaledCharWidth: number, scaledCharHeight: number, options: ITerminalOptions, colors: IColorSet): ICharAtlasConfig {
+ // null out some fields that don't matter
+ const clonedColors = <IPartialColorSet>{
+ foreground: colors.foreground,
+ background: colors.background,
+ cursor: undefined,
+ cursorAccent: undefined,
+ selection: undefined,
+ // For the static char atlas, we only use the first 16 colors, but we need all 256 for the
+ // dynamic character atlas.
+ ansi: colors.ansi.slice(0, 16)
+ };
+ return {
+ devicePixelRatio: window.devicePixelRatio,
+ scaledCharWidth,
+ scaledCharHeight,
+ fontFamily: options.fontFamily,
+ fontSize: options.fontSize,
+ fontWeight: options.fontWeight,
+ fontWeightBold: options.fontWeightBold,
+ allowTransparency: options.allowTransparency,
+ colors: clonedColors
+ };
+}
+
+export function configEquals(a: ICharAtlasConfig, b: ICharAtlasConfig): boolean {
+ for (let i = 0; i < a.colors.ansi.length; i++) {
+ if (a.colors.ansi[i].rgba !== b.colors.ansi[i].rgba) {
+ return false;
+ }
+ }
+ return a.devicePixelRatio === b.devicePixelRatio &&
+ a.fontFamily === b.fontFamily &&
+ a.fontSize === b.fontSize &&
+ a.fontWeight === b.fontWeight &&
+ a.fontWeightBold === b.fontWeightBold &&
+ a.allowTransparency === b.allowTransparency &&
+ a.scaledCharWidth === b.scaledCharWidth &&
+ a.scaledCharHeight === b.scaledCharHeight &&
+ a.colors.foreground === b.colors.foreground &&
+ a.colors.background === b.colors.background;
+}
+
+export function is256Color(colorCode: number): boolean {
+ return colorCode < DEFAULT_COLOR;
+}