chromedp full screen shot

fullscreenshot.go

func FullScreenshot(quality int64, result *[]byte) chromedp.Action {
	return chromedp.ActionFunc(func(ctx context.Context) error {
		// get layout metrics
		_, _, contentSize, err := page.GetLayoutMetrics().Do(ctx)
		if err != nil {
			return err
		}

		width, height := int64(math.Ceil(contentSize.Width)), int64(math.Ceil(contentSize.Height))

		// force viewport emulation
		err = emulation.SetDeviceMetricsOverride(width, height, 1, false).
			WithScreenOrientation(&emulation.ScreenOrientation{
				Type:  emulation.OrientationTypePortraitPrimary,
				Angle: 0,
			}).
			Do(ctx)
		if err != nil {
			return err
		}

		// capture screenshot
		*result, err = page.CaptureScreenshot().
			WithQuality(quality).
			WithClip(&page.Viewport{
				X:      contentSize.X,
				Y:      contentSize.Y,
				Width:  contentSize.Width,
				Height: contentSize.Height,
				Scale:  1,
			}).Do(ctx)
		if err != nil {
			return err
		}
		return nil
	})
}