void OnMainPageLoaded(object sender, RoutedEventArgs args)
{
// Find the dimension of the square bitmap
if (ApplicationView.Value == ApplicationViewState.FullScreenPortrait)
{
dimension = (int)(this.ActualWidth - referencePanel.Margin.Left
- referencePanel.Margin.Right);
}
else
{
dimension = (int)(this.ActualHeight - referencePanel.Margin.Top
- referencePanel.Margin.Bottom);
}
// Set this size to the reference panel so it doesn't get distorted in Snapped view
referencePanel.Width = dimension;
referencePanel.Height = dimension;
// Create the SurfaceImageSource and renderer
SurfaceImageSource surfaceImageSource = new SurfaceImageSource(dimension, dimension);
surfaceImageSourceRenderer = new SurfaceImageSourceRenderer(surfaceImageSource,
dimension, dimension);
image.Source = surfaceImageSource;
// Set rotation centers
rotate.CenterX = dimension / 2;
rotate.CenterY = dimension / 2;
inverseRotate.CenterX = dimension / 2;
inverseRotate.CenterY = dimension / 2;
// Start the event
CompositionTarget.Rendering += OnCompositionTargetRendering;
}
void OnClearButtonClick(object sender, RoutedEventArgs e)
{
SurfaceImageSource surfaceImageSource = new SurfaceImageSource(dimension, dimension);
surfaceImageSourceRenderer = new SurfaceImageSourceRenderer(surfaceImageSource,
dimension, dimension);
image.Source = surfaceImageSource;
}
