private static void UpdateCornerImage(Image image, Grid imageHolder, BitmapSource bitmap, RegionChooser regionChooser, bool isRetry = false)
{
// Image dimensions
int imageWidth = bitmap.PixelWidth;
int imageHeight = bitmap.PixelHeight;
double availableWidth = imageHolder.ActualWidth;
double availableHeight = imageHolder.ActualHeight;
if (availableWidth == 0 || availableHeight == 0)
{
// Intermittent bug causing this. In this case we queue it up to go again after a layout pass has been done.
if (!isRetry)
{
DispatchUtilities.BeginInvoke(() =>
{
UpdateCornerImage(image, imageHolder, bitmap, regionChooser, isRetry: true);
});
}
return;
}
int cornerWidthPixels = (int)(availableWidth / ZoomedPixelSize);
int cornerHeightPixels = (int)(availableHeight / ZoomedPixelSize);
// Make sure the subsection of the image is not larger than the image itself
cornerWidthPixels = Math.Min(cornerWidthPixels, imageWidth);
cornerHeightPixels = Math.Min(cornerHeightPixels, imageHeight);
double cornerWidth = cornerWidthPixels * ZoomedPixelSize;
double cornerHeight = cornerHeightPixels * ZoomedPixelSize;
var croppedBitmap = new CroppedBitmap();
croppedBitmap.BeginInit();
croppedBitmap.SourceRect = regionChooser(imageWidth, imageHeight, cornerWidthPixels, cornerHeightPixels);
croppedBitmap.Source = bitmap;
croppedBitmap.EndInit();
image.Source = croppedBitmap;
image.Width = cornerWidth;
image.Height = cornerHeight;
}
private static void UpdateCornerImage(Image image, Grid imageHolder, BitmapSource bitmap, RegionChooser regionChooser, bool isRetry = false)
{
// Image dimensions
int imageWidth = bitmap.PixelWidth;
int imageHeight = bitmap.PixelHeight;
double availableWidth = imageHolder.ActualWidth;
double availableHeight = imageHolder.ActualHeight;
if (availableWidth == 0 || availableHeight == 0)
{
// Intermittent bug causing this. In this case we queue it up to go again after a layout pass has been done.
if (!isRetry)
{
DispatchService.BeginInvoke(() =>
{
UpdateCornerImage(image, imageHolder, bitmap, regionChooser, isRetry: true);
});
}
return;
}
int cornerWidthPixels = (int)(availableWidth / ZoomedPixelSize);
int cornerHeightPixels = (int)(availableHeight / ZoomedPixelSize);
// Make sure the subsection of the image is not larger than the image itself
cornerWidthPixels = Math.Min(cornerWidthPixels, imageWidth);
cornerHeightPixels = Math.Min(cornerHeightPixels, imageHeight);
double cornerWidth = cornerWidthPixels * ZoomedPixelSize;
double cornerHeight = cornerHeightPixels * ZoomedPixelSize;
var croppedBitmap = new CroppedBitmap();
croppedBitmap.BeginInit();
croppedBitmap.SourceRect = regionChooser(imageWidth, imageHeight, cornerWidthPixels, cornerHeightPixels);
croppedBitmap.Source = bitmap;
croppedBitmap.EndInit();
image.Source = croppedBitmap;
image.Width = cornerWidth;
image.Height = cornerHeight;
}
