how to use puppeteer-sharp touchStart and touchEnd and touch move

Question

The Touchscreen in puppeteer-sharp API just gives one method: TapAsync. but I need drag(touchStart and touchEnd and touch move). How can I do that?

Answer 1

PuppeteerSharp doesn't have those APIs (because Pupppeteer doesn't have them). But, you could try sending those messages to the browser in the same way TapAsync does.

This is the TapAsync code:

// Touches appear to be lost during the first frame after navigation.
// This waits a frame before sending the tap.
// @see https://crbug.com/613219
await _client.SendAsync("Runtime.evaluate", new RuntimeEvaluateRequest
{
    Expression = "new Promise(x => requestAnimationFrame(() => requestAnimationFrame(x)))",
    AwaitPromise = true
}).ConfigureAwait(false);

var touchPoints = new[] { new TouchPoint { X = Math.Round(x), Y = Math.Round(y) } };
await _client.SendAsync("Input.dispatchTouchEvent", new InputDispatchTouchEventRequest
{
    Type = "touchStart",
    TouchPoints = touchPoints,
    Modifiers = _keyboard.Modifiers
}).ConfigureAwait(false);

await _client.SendAsync("Input.dispatchTouchEvent", new InputDispatchTouchEventRequest
{
    Type = "touchEnd",
    TouchPoints = Array.Empty<TouchPoint>(),
    Modifiers = _keyboard.Modifiers
}).ConfigureAwait(false);

Page has a public property Client. You can use that Client to perform these calls.

As you can check here, Type supports: touchStart, touchEnd, touchMove and touchCancel.