public void Parameters_ReturnsParameters()
{
var parameters = new CaptureParameters();
using (var grabber = new ScreenGrabber(parameters))
{
Assert.AreSame(parameters, grabber.Parameters);
}
}
public void ScreenshotWidth_ReturnsScaledWidth()
{
var parameters = new CaptureParameters() { Zoom = 0.25 };
using (var grabber = new ScreenGrabber(parameters))
{
Assert.AreApproximatelyEqual(ScreenGrabber.GetScreenSize().Width / 2, grabber.ScreenshotWidth, 1);
}
}
public void ScreenshotWidth_WhenDisposed_Throws()
{
var parameters = new CaptureParameters();
var grabber = new ScreenGrabber(parameters);
grabber.Dispose();
int x;
Assert.Throws<ObjectDisposedException>(() => x = grabber.ScreenshotWidth);
}
public void Grabber_ReturnsGrabber()
{
var grabber = new ScreenGrabber(new CaptureParameters());
var video = new FlashScreenVideo(new FlashScreenVideoParameters(grabber.ScreenshotWidth, grabber.ScreenshotHeight, 5));
using (var recorder = new ScreenRecorder(grabber, video))
{
Assert.AreSame(grabber, recorder.Grabber);
}
}
public void Grabber_WhenDisposed_Throws()
{
var grabber = new ScreenGrabber(new CaptureParameters());
var video = new FlashScreenVideo(new FlashScreenVideoParameters(grabber.ScreenshotWidth, grabber.ScreenshotHeight, 5));
var recorder = new ScreenRecorder(grabber, video);
recorder.Dispose();
ScreenGrabber x;
Assert.Throws<ObjectDisposedException>(() => x = recorder.Grabber);
}
/// <summary>
/// Captures an image of the entire desktop.
/// </summary>
/// <param name="parameters">The capture parameters.</param>
/// <returns>The screenshot.</returns>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="parameters"/> is null.</exception>
/// <exception cref="ScreenshotNotAvailableException">Thrown if a screenshot cannot be captured at this time.</exception>
public static Bitmap Screenshot(CaptureParameters parameters)
{
if (parameters == null)
throw new ArgumentNullException("parameters");
using (var grabber = new ScreenGrabber(parameters))
{
grabber.OverlayManager.AddOverlay(GetOverlayManager().ToOverlay());
return grabber.CaptureScreenshot(null);
}
}
public void Constructor_WhenVideoSizeDoesNotMatchGrabberScreenshotsSize_Throws()
{
var grabber = new ScreenGrabber(new CaptureParameters());
var video = new FlashScreenVideo(new FlashScreenVideoParameters(1, grabber.ScreenshotHeight, 5));
var ex = Assert.Throws<ArgumentException>(() => new ScreenRecorder(grabber, video));
Assert.Contains(ex.Message, "The video dimensions must be exactly the same as the screenshots obtained by the grabber.");
video = new FlashScreenVideo(new FlashScreenVideoParameters(grabber.ScreenshotWidth, 1, 5));
ex = Assert.Throws<ArgumentException>(() => new ScreenRecorder(grabber, video));
Assert.Contains(ex.Message, "The video dimensions must be exactly the same as the screenshots obtained by the grabber.");
}
/// <summary>
/// Creates a screen recorder.
/// </summary>
/// <param name="grabber">The screen grabber.</param>
/// <param name="video">The video to which frames are to be added.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="grabber"/> or
/// <paramref name="video"/> is null.</exception>
/// <exception cref="ArgumentException">Thrown if <paramref name="video"/> size
/// is not exactly equal to the <paramref name="grabber"/> screenshot size.</exception>
public ScreenRecorder(ScreenGrabber grabber, Video video)
{
if (grabber == null)
throw new ArgumentNullException("grabber");
if (video == null)
throw new ArgumentNullException("video");
if (video.Parameters.Width != grabber.ScreenshotWidth ||
video.Parameters.Height != grabber.ScreenshotHeight)
throw new ArgumentException("The video dimensions must be exactly the same as the screenshots obtained by the grabber.");
this.grabber = grabber;
this.video = video;
overlayManager = new OverlayManager();
}
/// <summary>
/// Disposes the screen recorder.
/// </summary>
/// <param name="disposing">True if <see cref="Dispose()"/> was called directly.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
Stop(false);
if (grabber != null)
{
grabber.Dispose();
}
}
grabber = null;
lastBitmap = null;
video = null;
}
/// <summary>
/// Creates a screen recorder.
/// </summary>
/// <param name="grabber">The screen grabber.</param>
/// <param name="video">The video to which frames are to be added.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="grabber"/> or
/// <paramref name="video"/> is null.</exception>
/// <exception cref="ArgumentException">Thrown if <paramref name="video"/> size
/// is not exactly equal to the <paramref name="grabber"/> screenshot size.</exception>
public ScreenRecorder(ScreenGrabber grabber, Video video)
{
if (grabber == null)
{
throw new ArgumentNullException("grabber");
}
if (video == null)
{
throw new ArgumentNullException("video");
}
if (video.Parameters.Width != grabber.ScreenshotWidth ||
video.Parameters.Height != grabber.ScreenshotHeight)
{
throw new ArgumentException("The video dimensions must be exactly the same as the screenshots obtained by the grabber.");
}
this.grabber = grabber;
this.video = video;
overlayManager = new OverlayManager();
}
/// <summary>
/// Disposes the screen recorder.
/// </summary>
/// <param name="disposing">True if <see cref="Dispose()"/> was called directly.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
Stop(false);
if (grabber != null)
grabber.Dispose();
}
grabber = null;
lastBitmap = null;
video = null;
}
public void CaptureScreenshot_WhenDisposed_Throws()
{
var parameters = new CaptureParameters();
var grabber = new ScreenGrabber(parameters);
grabber.Dispose();
Assert.Throws<ObjectDisposedException>(() => grabber.CaptureScreenshot(null));
}
public void Constructor_WhenVideoIsNull_Throws()
{
var grabber = new ScreenGrabber(new CaptureParameters());
Assert.Throws<ArgumentNullException>(() => new ScreenRecorder(grabber, null));
}
public void CaptureScreenshot_WhenBitmapIsNotNull_CapturesScreenshotIntoProvidedBitmap()
{
var parameters = new CaptureParameters() { Zoom = 0.25 };
using (var grabber = new ScreenGrabber(parameters))
{
using (Bitmap bitmap = new Bitmap(grabber.ScreenshotWidth, grabber.ScreenshotHeight))
{
if (ScreenGrabber.CanCaptureScreenshot())
{
Bitmap returnedBitmap = grabber.CaptureScreenshot(bitmap);
TestLog.EmbedImage("Screenshot with 0.25x zoom", bitmap);
Assert.AreSame(bitmap, returnedBitmap);
}
else
{
Assert.Throws<ScreenshotNotAvailableException>(() => grabber.CaptureScreenshot(bitmap),
"CanCaptureScreenshot returned false so expected an exception to be thrown.");
}
}
}
}
public void CaptureScreenshot_WhenBitmapIsNullAndZoomed_CapturesScaledScreenshotIntoNewBitmap()
{
var parameters = new CaptureParameters() { Zoom = 0.25 };
using (var grabber = new ScreenGrabber(parameters))
{
if (ScreenGrabber.CanCaptureScreenshot())
{
using (Bitmap bitmap = grabber.CaptureScreenshot(null))
{
TestLog.EmbedImage("Screenshot with 0.25x zoom", bitmap);
Assert.Multiple(() =>
{
Assert.AreApproximatelyEqual(ScreenGrabber.GetScreenSize().Width / 2,
grabber.ScreenshotWidth, 1);
Assert.AreApproximatelyEqual(ScreenGrabber.GetScreenSize().Height / 2,
grabber.ScreenshotHeight, 1);
Assert.AreEqual(grabber.ScreenshotWidth, bitmap.Width);
Assert.AreEqual(grabber.ScreenshotHeight, bitmap.Height);
});
}
}
else
{
Assert.Throws<ScreenshotNotAvailableException>(() => grabber.CaptureScreenshot(null),
"CanCaptureScreenshot returned false so expected an exception to be thrown.");
}
}
}
/// <summary>
/// Starts recording a screen capture video of the entire desktop.
/// </summary>
/// <remarks>
/// <para>
/// Recording a screen capture video can be very CPU and space intensive particularly
/// when running tests on a single-core CPU. We recommend calling
/// <see cref="StartRecording(CaptureParameters, double)" /> with
/// a <see cref="CaptureParameters.Zoom" /> factor of 0.25 or less and a frame rate
/// of no more than 5 to 10 frames per second.
/// </para>
/// </remarks>
/// <param name="parameters">The capture parameters.</param>
/// <param name="framesPerSecond">The number of frames per second to capture.</param>
/// <returns>The recorder.</returns>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="parameters"/> is null.</exception>
/// <exception cref="ScreenshotNotAvailableException">Thrown if a screenshot cannot be captured at this time.</exception>
public static ScreenRecorder StartRecording(CaptureParameters parameters, double framesPerSecond)
{
if (parameters == null)
throw new ArgumentNullException("parameters");
ScreenGrabber.ThrowIfScreenshotNotAvailable();
ScreenGrabber grabber = new ScreenGrabber(parameters);
try
{
FlashScreenVideo video = new FlashScreenVideo(new FlashScreenVideoParameters(
grabber.ScreenshotWidth, grabber.ScreenshotHeight, framesPerSecond));
ScreenRecorder recorder = new ScreenRecorder(grabber, video);
try
{
recorder.OverlayManager.AddOverlay(GetOverlayManager().ToOverlay());
recorder.Start();
return recorder;
}
catch
{
recorder.Dispose();
throw;
}
}
catch
{
grabber.Dispose();
throw;
}
}
public void CaptureScreenshot_WhenBitmapIsNotTheRightSize_Throws()
{
var parameters = new CaptureParameters() { Zoom = 0.25 };
using (var grabber = new ScreenGrabber(parameters))
{
var ex = Assert.Throws<ArgumentException>(() => grabber.CaptureScreenshot(new Bitmap(1, grabber.ScreenshotHeight)));
Assert.Contains(ex.Message, "The bitmap dimensions must exactly match the screenshot dimensions.");
ex = Assert.Throws<ArgumentException>(() => grabber.CaptureScreenshot(new Bitmap(grabber.ScreenshotWidth, 1)));
Assert.Contains(ex.Message, "The bitmap dimensions must exactly match the screenshot dimensions.");
}
}
public void Start_CapturesVideoUntilStopped()
{
var grabber = new ScreenGrabber(new CaptureParameters() { Zoom = 0.25 });
var video = new FlashScreenVideo(new FlashScreenVideoParameters(grabber.ScreenshotWidth, grabber.ScreenshotHeight, 5));
using (var recorder = new ScreenRecorder(grabber, video))
{
recorder.Start();
Thread.Sleep(2000);
recorder.Stop();
TestLog.EmbedVideo("Video", recorder.Video);
}
}
