public void BitmapStitcher_Default()
{
using (var bitmapStitcher = new BitmapStitcher())
{
bitmapStitcher
.AddBitmap(BitmapHelper.LoadBitmap(@"TestFiles\scroll0.png"))
.AddBitmap(BitmapHelper.LoadBitmap(@"TestFiles\scroll35.png"))
.AddBitmap(BitmapHelper.LoadBitmap(@"TestFiles\scroll70.png"))
.AddBitmap(BitmapHelper.LoadBitmap(@"TestFiles\scroll105.png"))
.AddBitmap(BitmapHelper.LoadBitmap(@"TestFiles\scroll124.png"));
using (var completedBitmap = bitmapStitcher.Result())
{
completedBitmap.Save("scroll.png", ImageFormat.Png);
}
}
}
/// <summary>
/// Start the capture
/// </summary>
/// <returns>Bitmap</returns>
public Bitmap Capture()
{
if (_windowScroller.NeedsFocus())
{
User32Api.SetForegroundWindow(_windowScroller.ScrollBarWindow.Handle);
Application.DoEvents();
Thread.Sleep(Delay);
Application.DoEvents();
}
// Find the area which is scrolling
// 1. Take the client bounds
var clientBounds = _windowScroller.ScrollBarWindow.GetInfo().ClientBounds;
// Use a region for steps 2 and 3
using (var region = new Region(clientBounds))
{
// 2. exclude the children, if any
foreach (var interopWindow in _windowScroller.ScrollBarWindow.GetChildren())
{
region.Exclude(interopWindow.GetInfo().Bounds);
}
// 3. exclude the scrollbar, if it can be found
if (_windowScroller.ScrollBar.HasValue)
{
region.Exclude(_windowScroller.ScrollBar.Value.Bounds);
}
// Get the bounds of the region
using (var screenGraphics = Graphics.FromHwnd(User32Api.GetDesktopWindow()))
{
var rectangleF = region.GetBounds(screenGraphics);
clientBounds = new NativeRect((int)rectangleF.X, (int)rectangleF.Y, (int)rectangleF.Width, (int)rectangleF.Height);
}
}
if (clientBounds.Width * clientBounds.Height <= 0)
{
return(null);
}
// Move the window to the start
_windowScroller.Start();
// Register a keyboard hook to make it possible to ESC the capturing
var breakScroll = false;
var keyboardHook = KeyboardHook.KeyboardEvents
.Where(args => args.Key == VirtualKeyCodes.ESCAPE)
.Subscribe(args =>
{
args.Handled = true;
breakScroll = true;
});
Bitmap resultImage = null;
try
{
// A delay to make the window move
Application.DoEvents();
Thread.Sleep(Delay);
Application.DoEvents();
if (_windowScroller.IsAtStart)
{
using (var bitmapStitcher = new BitmapStitcher())
{
bitmapStitcher.AddBitmap(WindowCapture.CaptureRectangle(clientBounds));
// Loop as long as we are not at the end yet
while (!_windowScroller.IsAtEnd && !breakScroll)
{
// Next "page"
_windowScroller.Next();
// Wait a bit, so the window can update
Application.DoEvents();
Thread.Sleep(Delay);
Application.DoEvents();
// Capture inside loop
bitmapStitcher.AddBitmap(WindowCapture.CaptureRectangle(clientBounds));
}
resultImage = bitmapStitcher.Result();
}
}
else
{
resultImage = WindowCapture.CaptureRectangle(clientBounds);
}
}
catch (Exception ex)
{
Log.Error().WriteLine(ex);
}
finally
{
// Remove hook for escape
keyboardHook.Dispose();
// Try to reset location
_windowScroller.Reset();
}
return(resultImage);
}
