/// <summary>
/// Loads and processes an image from the filesystem.
/// </summary>
/// <param name="ImagePath">The path on the filesystem of the image to load</param>
private void LoadImage(string ImagePath)
{
// Clear the previous image if there was one
Image preview = this.FindControl <Image>("Preview");
preview.Source = null;
preview.InvalidateVisual();
// Process and draw the new image
ImageToEtch = new EtchableImage(ImagePath);
Slider luminanceSlider = this.FindControl <Slider>("LuminanceSlider");
ImageToEtch.ProcessImage(1.0 - luminanceSlider.Value);
preview.Source = ImageToEtch.Bitmap;
preview.InvalidateVisual();
// Set the image dimension labels
TextBlock imageWidthLabel = this.FindControl <TextBlock>("ImageWidthLabel");
TextBlock imageHeightLabel = this.FindControl <TextBlock>("ImageHeightLabel");
imageWidthLabel.Text = $"{ImageToEtch.Width} px";
imageHeightLabel.Text = $"{ImageToEtch.Height} px";
// Route it
RecalculateRoute();
}
/// <summary>
/// Updates the luminance threshold when the brightness slider's value changes.
/// </summary>
/// <param name="sender">Not used</param>
/// <param name="e">The args containing the new slider value</param>
public void LuminanceSlider_Changed(object sender, AvaloniaPropertyChangedEventArgs e)
{
if (e.Property.Name != "Value")
{
return;
}
double newThreshold = (double)e.NewValue;
if (ImageToEtch != null)
{
Image preview = this.FindControl <Image>("Preview");
ImageToEtch.ProcessImage(1.0 - newThreshold);
preview.InvalidateVisual();
Button exportButton = this.FindControl <Button>("ExportButton");
exportButton.IsEnabled = false;
}
}
