xterm

[VSoRC/.git] / node_modules / xterm / src / common / buffer / AttributeData.ts

diff --git a/node_modules/xterm/src/common/buffer/AttributeData.ts b/node_modules/xterm/src/common/buffer/AttributeData.ts
new file mode 100644 (file)
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+++ b/node_modules/xterm/src/common/buffer/AttributeData.ts
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+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { IAttributeData, IColorRGB } from 'common/Types';
+import { Attributes, FgFlags, BgFlags } from 'common/buffer/Constants';
+
+export class AttributeData implements IAttributeData {
+  static toColorRGB(value: number): IColorRGB {
+    return [
+      value >>> Attributes.RED_SHIFT & 255,
+      value >>> Attributes.GREEN_SHIFT & 255,
+      value & 255
+    ];
+  }
+  static fromColorRGB(value: IColorRGB): number {
+    return (value[0] & 255) << Attributes.RED_SHIFT | (value[1] & 255) << Attributes.GREEN_SHIFT | value[2] & 255;
+  }
+
+  public clone(): IAttributeData {
+    const newObj = new AttributeData();
+    newObj.fg = this.fg;
+    newObj.bg = this.bg;
+    return newObj;
+  }
+
+  // data
+  public fg: number = 0;
+  public bg: number = 0;
+
+  // flags
+  public isInverse(): number   { return this.fg & FgFlags.INVERSE; }
+  public isBold(): number      { return this.fg & FgFlags.BOLD; }
+  public isUnderline(): number { return this.fg & FgFlags.UNDERLINE; }
+  public isBlink(): number     { return this.fg & FgFlags.BLINK; }
+  public isInvisible(): number { return this.fg & FgFlags.INVISIBLE; }
+  public isItalic(): number    { return this.bg & BgFlags.ITALIC; }
+  public isDim(): number       { return this.bg & BgFlags.DIM; }
+
+  // color modes
+  public getFgColorMode(): number { return this.fg & Attributes.CM_MASK; }
+  public getBgColorMode(): number { return this.bg & Attributes.CM_MASK; }
+  public isFgRGB(): boolean       { return (this.fg & Attributes.CM_MASK) === Attributes.CM_RGB; }
+  public isBgRGB(): boolean       { return (this.bg & Attributes.CM_MASK) === Attributes.CM_RGB; }
+  public isFgPalette(): boolean   { return (this.fg & Attributes.CM_MASK) === Attributes.CM_P16 || (this.fg & Attributes.CM_MASK) === Attributes.CM_P256; }
+  public isBgPalette(): boolean   { return (this.bg & Attributes.CM_MASK) === Attributes.CM_P16 || (this.bg & Attributes.CM_MASK) === Attributes.CM_P256; }
+  public isFgDefault(): boolean   { return (this.fg & Attributes.CM_MASK) === 0; }
+  public isBgDefault(): boolean   { return (this.bg & Attributes.CM_MASK) === 0; }
+
+  // colors
+  public getFgColor(): number {
+    switch (this.fg & Attributes.CM_MASK) {
+      case Attributes.CM_P16:
+      case Attributes.CM_P256:  return this.fg & Attributes.PCOLOR_MASK;
+      case Attributes.CM_RGB:   return this.fg & Attributes.RGB_MASK;
+      default:                  return -1;  // CM_DEFAULT defaults to -1
+    }
+  }
+  public getBgColor(): number {
+    switch (this.bg & Attributes.CM_MASK) {
+      case Attributes.CM_P16:
+      case Attributes.CM_P256:  return this.bg & Attributes.PCOLOR_MASK;
+      case Attributes.CM_RGB:   return this.bg & Attributes.RGB_MASK;
+      default:                  return -1;  // CM_DEFAULT defaults to -1
+    }
+  }
+}