Expose texture atlas change event and use in demo

2022-07-31 11:16:12 -07:00
parent 266d795179
commit 75ca5006a2
3 changed files with 14 additions and 3 deletions
@@ -46,6 +46,8 @@ export class WebglRenderer extends Disposable implements IRenderer {
  private _core: ITerminal;
  private _isAttached: boolean;

+  private _onChangeTextureAtlas = new EventEmitter<HTMLCanvasElement>();
+  public get onChangeTextureAtlas(): IEvent<HTMLCanvasElement> { return this._onChangeTextureAtlas.event; }
  private _onRequestRedraw = new EventEmitter<IRequestRedrawEvent>();
  public get onRequestRedraw(): IEvent<IRequestRedrawEvent> { return this._onRequestRedraw.event; }

@@ -240,7 +242,10 @@ export class WebglRenderer extends Disposable implements IRenderer {
    if (!('getRasterizedGlyph' in atlas)) {
      throw new Error('The webgl renderer only works with the webgl char atlas');
    }
-    this._charAtlas = atlas as WebglCharAtlas;
+    if (this._charAtlas !== atlas) {
+      this._onChangeTextureAtlas.fire(atlas.cacheCanvas);
+    }
+    this._charAtlas = atlas;
    this._charAtlas.warmUp();
    this._glyphRenderer.setAtlas(this._charAtlas);
  }