private async void Accept_AppBarButton_Tapped(object sender, TappedRoutedEventArgs e)
{
#region Tyr
double sourceImageWidthScale = canvas.Width / this.sourceImagePixelWidth;
double sourceImageHeightScale = canvas.Height / this.sourceImagePixelHeight;
Size previewImageSize = new Size(
this.selectedRegion.SelectedRect.Width / sourceImageWidthScale,
this.selectedRegion.SelectedRect.Height / sourceImageHeightScale);
double previewImageScale = 1;
if (previewImageSize.Width <= canvas.Width &&
previewImageSize.Height <= canvas.Height)
{
this.previewImage.Stretch = Windows.UI.Xaml.Media.Stretch.None;
}
else
{
this.previewImage.Stretch = Windows.UI.Xaml.Media.Stretch.Uniform;
previewImageScale = Math.Min(canvas.Width / previewImageSize.Width,
canvas.Height / previewImageSize.Height);
}
ImageSource source = await CropBitmap.GetCroppedBitmap(
this.sourceImageFile,
new Point(this.selectedRegion.SelectedRect.X / sourceImageWidthScale, this.selectedRegion.SelectedRect.Y / sourceImageHeightScale),
previewImageSize,
previewImageScale);
#endregion
/*
*
*
* await CropBitmap.SaveCroppedBitmapAsync(
* sourceImageFile,
* croppedImageFile,
* new Point(this.selectedRegion.SelectedRect.X / widthScale, this.selectedRegion.SelectedRect.Y / heightScale),
* new Size(this.selectedRegion.SelectedRect.Width / widthScale, this.selectedRegion.SelectedRect.Height / heightScale));*/
}
private async void LoadImageFromSource(StorageFile imgFile)
{
if (imgFile != null)
{
this.previewImage.Source = null;
this.sourceImage.Source = null;
this.canvas.Visibility = Visibility.Collapsed;
using (IRandomAccessStream fileStream = await imgFile.OpenAsync(FileAccessMode.Read))
{
this.sourceImageFile = imgFile;
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(fileStream);
this.sourceImagePixelHeight = decoder.PixelHeight;
this.sourceImagePixelWidth = decoder.PixelWidth;
if (this.sourceImagePixelHeight < 2 * this.CornerSize || this.sourceImagePixelWidth < 2 * this.CornerSize)
{
return;
}
else
{
double sourceImageScale = 1;
if (this.sourceImagePixelHeight < this.sourceImageGrid.ActualHeight && this.sourceImagePixelWidth < this.sourceImageGrid.ActualWidth)
{
this.sourceImage.Stretch = Stretch.None;
}
else
{
sourceImageScale = Math.Min(this.sourceImageGrid.ActualWidth / this.sourceImagePixelWidth, this.sourceImageGrid.ActualHeight / this.sourceImagePixelHeight);
this.sourceImage.Stretch = Windows.UI.Xaml.Media.Stretch.Uniform;
}
this.sourceImage.Source = await CropBitmap.GetCroppedBitmap(
this.sourceImageFile,
new Point(0, 0),
new Size(this.sourceImagePixelWidth, this.sourceImagePixelHeight),
sourceImageScale);
}
}
}
}
private async void UpdatePreviewImage()
{
try
{
double sourceImageWidthScale = canvas.Width / this.sourceImagePixelWidth;
double sourceImageHeightScale = canvas.Height / this.sourceImagePixelHeight;
Size previewImageSize = new Size(
this.selectedRegion.SelectedRect.Width / sourceImageWidthScale,
this.selectedRegion.SelectedRect.Height / sourceImageHeightScale);
double previewImageScale = 1;
if (previewImageSize.Width <= canvas.Width &&
previewImageSize.Height <= canvas.Height)
{
this.previewImage.Stretch = Windows.UI.Xaml.Media.Stretch.None;
}
else
{
this.previewImage.Stretch = Windows.UI.Xaml.Media.Stretch.Uniform;
previewImageScale = Math.Min(canvas.Width / previewImageSize.Width,
canvas.Height / previewImageSize.Height);
}
this.previewImage.Source = await CropBitmap.GetCroppedBitmap(
this.sourceImageFile,
new Point(this.selectedRegion.SelectedRect.X / sourceImageWidthScale, this.selectedRegion.SelectedRect.Y / sourceImageHeightScale),
previewImageSize,
previewImageScale);
}
catch (Exception ex)
{
System.Diagnostics.Debug.Write(ex);
}
}