private void Window_Loaded(object sender, RoutedEventArgs e)
{
BitmapImage bitmap;
FormatConvertedBitmap convertBitmap;
WriteableBitmap Writebitmap;
bitmap = new BitmapImage(new System.Uri(Environment.CurrentDirectory + "\\DVD-Logo.png"));
//Change to 32 bpp if needed
if (bitmap.Format.BitsPerPixel != 32)
{
convertBitmap = new FormatConvertedBitmap(bitmap, PixelFormats.Bgra32, null, 0);
Writebitmap = new WriteableBitmap(convertBitmap);
}
else
{
Writebitmap = new WriteableBitmap(bitmap);
}
//Show the picture in a WPF Image control
image1.Source = Writebitmap;
X = (canvas1.ActualWidth - ImgCanvas.ActualWidth) * Rnd.NextDouble();
Y = (canvas1.ActualHeight - ImgCanvas.ActualHeight) * Rnd.NextDouble();
dX = 2.0;
dY = 2.0;
ImgCanvas.Width = Writebitmap.PixelWidth;
ImgCanvas.Height = Writebitmap.PixelHeight;
ImgCanvas.SetValue(Canvas.LeftProperty, X);
ImgCanvas.SetValue(Canvas.TopProperty, Y);
Rnd.NextBytes(cb);
ImgCanvas.Background = new SolidColorBrush(Color.FromRgb(cb[0], cb[1], cb[2]));
CompositionTarget.Rendering += CompositionTarget_Rendering;
}
/// <summary>
/// Event raised on mouse down in the ZoomAndPanControl.
/// </summary>
private void ZoomAndPanControl_MouseDown(object sender, MouseButtonEventArgs e)
{
ImgCanvas.Focus();
mouseButtonDown = e.ChangedButton;
origZoomAndPanControlMouseDownPoint = e.GetPosition(zoomAndPanControl);
origContentMouseDownPoint = e.GetPosition(ImgCanvas);
if (mouseButtonDown == MouseButton.Left)
{
// Just a plain old left-down initiates panning mode.
mouseHandlingMode = MouseHandlingMode.Panning;
}
if (mouseHandlingMode != MouseHandlingMode.None)
{
// Capture the mouse so that we eventually receive the mouse up event.
zoomAndPanControl.CaptureMouse();
e.Handled = true;
}
}
private void CompositionTarget_Rendering(Object sender, EventArgs e)
{
bool colorchange = false;
X += dX;
Y += dY;
if (X < 0)
{
X = 0;
dX = -dX;
colorchange = true;
}
if (X > canvas1.ActualWidth - ImgCanvas.ActualWidth)
{
X = canvas1.ActualWidth - ImgCanvas.ActualWidth;
dX = -dX;
colorchange = true;
}
if (Y < 0)
{
Y = 0;
dY = -dY;
colorchange = true;
}
if (Y > canvas1.ActualHeight - ImgCanvas.ActualHeight)
{
Y = canvas1.ActualHeight - ImgCanvas.ActualHeight;
dY = -dY;
colorchange = true;
}
ImgCanvas.SetValue(Canvas.LeftProperty, X);
ImgCanvas.SetValue(Canvas.TopProperty, Y);
if (colorchange)
{
Rnd.NextBytes(cb);
ImgCanvas.Background = new SolidColorBrush(Color.FromRgb(cb[0], cb[1], cb[2]));
}
}
