/// <summary>
/// Makes a transparent window which adjust it's size and position to fit the parent window
/// </summary>
/// <param name="parent">HWND/Handle of a window</param>
/// <param name="limitFps">VSync</param>
/// <exception cref="Exception">
/// The handle of the parent window isn't valid
/// or
/// Could not create OverlayWindow
/// </exception>
public DirectXOverlayWindow(IntPtr parent, bool limitFps = true)
{
if (parent == IntPtr.Zero)
{
throw new Exception("The handle of the parent window isn't valid");
}
NativeUtils.GetWindowRect(parent, out var bounds);
IsDisposing = false;
IsVisible = true;
IsTopMost = true;
ParentWindowExists = true;
X = bounds.Left;
Y = bounds.Top;
Width = bounds.Right - bounds.Left;
Height = bounds.Bottom - bounds.Top;
ParentWindow = parent;
if (!CreateWindow())
{
throw new Exception("Could not create OverlayWindow");
}
Graphics = new Direct2DRenderer(Handle, limitFps);
SetBounds(X, Y, Width, Height);
}
/// <summary>
/// Resize and set new position if the parent window's bounds change
/// </summary>
public void Update()
{
if (!ParentWindowExists)
{
return;
}
NativeUtils.GetWindowRect(ParentWindow, out var bounds);
if (X != bounds.Left || Y != bounds.Top || Width != bounds.Right - bounds.Left ||
Height != bounds.Bottom - bounds.Top)
{
SetBounds(bounds.Left, bounds.Top, bounds.Right - bounds.Left, bounds.Bottom - bounds.Top);
}
}
public void Highlight()
{
IntPtr windowDC;
RECT windowRect = new RECT(0, 0, 0, 0);
NativeUtils.GetWindowRect(detectedWindow, ref windowRect);
IntPtr parentWindow = NativeUtils.GetParent(detectedWindow);
windowDC = NativeUtils.GetWindowDC(detectedWindow);
if (windowDC != IntPtr.Zero)
{
Graphics graph = Graphics.FromHdc(windowDC, detectedWindow);
graph.DrawRectangle(drawPen, 1, 1, windowRect.Width - 2, windowRect.Height - 2);
graph.Dispose();
NativeUtils.ReleaseDC(detectedWindow, windowDC);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Direct2DRenderer" /> class.
/// </summary>
/// <param name="hwnd">The HWND.</param>
/// <param name="limitFps">if set to <c>true</c> [limit FPS].</param>
public Direct2DRenderer(IntPtr hwnd, bool limitFps)
{
factory = new SharpDX.Direct2D1.Factory();
fontFactory = new Factory();
NativeUtils.GetWindowRect(hwnd, out var bounds);
var targetProperties = new HwndRenderTargetProperties {
Hwnd = hwnd,
PixelSize = new Size2(bounds.Right - bounds.Left, bounds.Bottom - bounds.Top),
PresentOptions = limitFps ? PresentOptions.None : PresentOptions.Immediately
};
var prop = new RenderTargetProperties(RenderTargetType.Hardware,
new PixelFormat(Format.B8G8R8A8_UNorm, AlphaMode.Premultiplied), 0, 0, RenderTargetUsage.None,
FeatureLevel.Level_DEFAULT);
device = new WindowRenderTarget(factory, prop, targetProperties)
{
TextAntialiasMode = TextAntialiasMode.Aliased,
AntialiasMode = AntialiasMode.Aliased
};
}