Start @xterm scope with core and webgl addons

2023-11-01 06:44:26 -07:00
parent 4245283e05
commit add7f8133e
32 changed files with 34 additions and 34 deletions
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { ICursorRenderModel, IRenderModel } from './Types';
+import { ISelectionRenderModel } from 'browser/renderer/shared/Types';
+import { createSelectionRenderModel } from 'browser/renderer/shared/SelectionRenderModel';
+
+export const RENDER_MODEL_INDICIES_PER_CELL = 4;
+export const RENDER_MODEL_BG_OFFSET = 1;
+export const RENDER_MODEL_FG_OFFSET = 2;
+export const RENDER_MODEL_EXT_OFFSET = 3;
+
+export const COMBINED_CHAR_BIT_MASK = 0x80000000;
+
+export class RenderModel implements IRenderModel {
+  public cells: Uint32Array;
+  public lineLengths: Uint32Array;
+  public selection: ISelectionRenderModel;
+  public cursor?: ICursorRenderModel;
+
+  constructor() {
+    this.cells = new Uint32Array(0);
+    this.lineLengths = new Uint32Array(0);
+    this.selection = createSelectionRenderModel();
+  }
+
+  public resize(cols: number, rows: number): void {
+    const indexCount = cols * rows * RENDER_MODEL_INDICIES_PER_CELL;
+    if (indexCount !== this.cells.length) {
+      this.cells = new Uint32Array(indexCount);
+      this.lineLengths = new Uint32Array(rows);
+    }
+  }
+
+  public clear(): void {
+    this.cells.fill(0, 0);
+    this.lineLengths.fill(0, 0);
+  }
+}