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re register intersection observer on window change

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jeanp413
2023-12-12 05:55:30 -05:00
parent 97750f672f
commit 2592e1e84d
1 changed files with 13 additions and 5 deletions
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src/browser/services/RenderService.ts
+13 -5
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@@ -3,12 +3,13 @@
* @license MIT
*/
import { IDisposable } from 'common/Types';
import { RenderDebouncer } from 'browser/RenderDebouncer';
import { IRenderDebouncerWithCallback } from 'browser/Types';
import { IRenderDimensions, IRenderer } from 'browser/renderer/shared/Types';
import { ICharSizeService, ICoreBrowserService, IRenderService, IThemeService } from 'browser/services/Services';
import { EventEmitter } from 'common/EventEmitter';
import { Disposable, MutableDisposable } from 'common/Lifecycle';
import { Disposable, MutableDisposable, toDisposable } from 'common/Lifecycle';
import { DebouncedIdleTask } from 'common/TaskQueue';
import { IBufferService, IDecorationService, IOptionsService } from 'common/services/Services';
@@ -24,6 +25,7 @@ export class RenderService extends Disposable implements IRenderService {
private _renderer: MutableDisposable<IRenderer> = this.register(new MutableDisposable());
private _renderDebouncer: IRenderDebouncerWithCallback;
private _pausedResizeTask = new DebouncedIdleTask();
private _observerDisposable: IDisposable | undefined;
private _isPaused: boolean = false;
private _needsFullRefresh: boolean = false;
@@ -38,7 +40,7 @@ export class RenderService extends Disposable implements IRenderService {
};
private readonly _onDimensionsChange = this.register(new EventEmitter<IRenderDimensions>());
public readonly onDimensionsChange = this._onDimensionsChange.event;
public readonly onDimensionsChange = this._onDimensionsChange.event;
private readonly _onRenderedViewportChange = this.register(new EventEmitter<{ start: number, end: number }>());
public readonly onRenderedViewportChange = this._onRenderedViewportChange.event;
private readonly _onRender = this.register(new EventEmitter<{ start: number, end: number }>());
@@ -101,12 +103,18 @@ export class RenderService extends Disposable implements IRenderService {
this.register(themeService.onChangeColors(() => this._fullRefresh()));
this._registerIntersectionObserver(coreBrowserService.window, screenElement);
this.register(coreBrowserService.onWindowChange((w) => this._registerIntersectionObserver(w, screenElement)));
}
private _registerIntersectionObserver(w: Window & typeof globalThis, screenElement: HTMLElement): void {
// Detect whether IntersectionObserver is detected and enable renderer pause
// and resume based on terminal visibility if so
if ('IntersectionObserver' in coreBrowserService.window) {
const observer = new coreBrowserService.window.IntersectionObserver(e => this._handleIntersectionChange(e[e.length - 1]), { threshold: 0 });
this._observerDisposable?.dispose();
if ('IntersectionObserver' in w) {
const observer = new w.IntersectionObserver(e => this._handleIntersectionChange(e[e.length - 1]), { threshold: 0 });
observer.observe(screenElement);
this.register({ dispose: () => observer.disconnect() });
this._observerDisposable = toDisposable(() => observer.disconnect());
}
}