/// <summary>
/// Gets the screen-relative point for a point within the coordinate
/// space of the specified element.
/// </summary>
/// <param name='element'>Element relative to which the point is specified.</param>
/// <param name='point'>Point to translate.</param>
/// <returns>The point in screen-relative coordinates.</returns>
public static LHPoint GetScreenRelativePoint(UIElement element, LHPoint point)
{
PresentationSource source;
if (element == null)
{
throw new ArgumentNullException("element");
}
LHPoint result = GetClientRelativePoint(element, point);
source = PresentationSource.FromVisual(element);
if (source == null)
{
throw new InvalidOperationException("element is not connected to visual tree");
}
// Offset from client area origin.
Microsoft.Test.Win32.NativeStructs.POINT p = new Microsoft.Test.Win32.NativeStructs.POINT(0, 0);
NativeMethods.ClientToScreen(((HwndSource)source).Handle, ref p);
// Adjust to High DPI.
float hFactor, vFactor;
HighDpiScaleFactors(out hFactor, out vFactor);
result.X = (int)Math.Round(result.X * hFactor) + p.x;
result.Y = (int)Math.Round(result.Y * vFactor) + p.y;
return(result);
}
/// <summary>
/// Gets the rectangle that bounds the specified element, relative
/// to the top-left corner of the screen.
/// </summary>
/// <param name='element'>Element to get rectangle for.</param>
/// <returns>The rectangle that bounds the element.</returns>
public static Rect GetScreenRelativeRect(UIElement element)
{
Microsoft.Test.Win32.NativeStructs.POINT topLeft;
Rect clientRect;
PresentationSource source;
if (element == null)
{
throw new ArgumentNullException("element");
}
source = PresentationSource.FromVisual(element);
if (source == null)
{
throw new InvalidOperationException("Element is not connected to visual tree");
}
clientRect = GetClientRelativeRect(element);
// Adjust to High DPI.
float hFactor, vFactor;
HighDpiScaleFactors(out hFactor, out vFactor);
topLeft = new Microsoft.Test.Win32.NativeStructs.POINT((int)Math.Round(clientRect.Left * hFactor), (int)Math.Round(clientRect.Top * vFactor));
NativeMethods.ClientToScreen(((HwndSource)source).Handle, ref topLeft);
return(new Rect(topLeft.x, topLeft.y, clientRect.Width * vFactor, clientRect.Height * vFactor));
}
private static Bitmap CreateBitmapFromWindowHandle(IntPtr windowHandle,
Microsoft.Test.Win32.NativeStructs.RECT r)
{
WaitForCompleteRender();
//System.Diagnostics.Trace.WriteLine(String.Format(
// "Capturing bitmap for window in rectangle [{0};{1} - {2};{3}]",
// r.left, r.top, r.right, r.bottom));
GlobalLog.LogStatus(String.Format(
"Capturing bitmap for window in rectangle [{0};{1} - {2};{3}]",
r.left, r.top, r.right, r.bottom));
new SecurityPermission(PermissionState.Unrestricted).Assert();
int cx = r.Width;
int cy = r.Height;
if (cx <= 0)
{
throw new Exception("Window to create bitmap for has <= 0 width.");
}
if (cy <= 0)
{
throw new Exception("Window to create bitmap for has <= 0 height.");
}
IntPtr sourceDC = NativeMethods.GetDC(new HandleRef(new object(), (IntPtr)null));
Microsoft.Test.Win32.NativeStructs.POINT topLeft = new Microsoft.Test.Win32.NativeStructs.POINT(0, 0); //Get the screen co-ordinates of the client origin.
NativeMethods.ClientToScreen(windowHandle, ref topLeft);
if ((int)sourceDC == 0)
{
string message = String.Format(
"Unable to retrieve device context for window handle {0}.",
(int)windowHandle);
throw new Exception(message);
}
try
{
Bitmap bitmap = new Bitmap(cx, cy,
System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Graphics graphics = Graphics.FromImage(bitmap);
IntPtr destination = graphics.GetHdc();
const int SRCCOPY = 0x00CC0020;
NativeMethods.SafeBitBlt(destination, 0, 0, cx, cy, sourceDC, topLeft.x, topLeft.y,
SRCCOPY);
graphics.ReleaseHdc(destination);
graphics.Dispose();
return(bitmap);
}
finally
{
// Win32.ReleaseDC(windowHandle, sourceDC);
NativeMethods.ReleaseDC(new HandleRef(new object(), windowHandle), new HandleRef(new object(), sourceDC));
}
}