private void OnRegionChanged(object sender, EventArgs e)
{
RegionEditorControl regionControl = (RegionEditorControl)sender;
RegionEditorViewModel regionEditorViewModel = (RegionEditorViewModel)regionControl.DataContext;
ImageRegion regionObject = regionEditorViewModel.Region;
// Update size in case is changed
regionObject.Left = EnsureValidNormalizedValue(regionControl.Margin.Left / imageControl.ActualWidth);
regionObject.Top = EnsureValidNormalizedValue(regionControl.Margin.Top / imageControl.ActualHeight);
regionObject.Width = EnsureValidNormalizedValue(regionControl.ActualWidth / imageControl.ActualWidth);
regionObject.Height = EnsureValidNormalizedValue(regionControl.ActualHeight / imageControl.ActualHeight);
if (regionObject.Width + regionObject.Left > 1)
{
regionObject.Width = 1 - regionObject.Left;
}
if (regionObject.Height + regionObject.Top > 1)
{
regionObject.Height = 1 - regionObject.Top;
}
needsSaving = true;
}
private void AddRegionToUI(ImageRegion region)
{
var editor = new RegionEditorControl
{
Width = imageControl.ActualWidth * region.Width,
Height = imageControl.ActualHeight * region.Height,
Margin = new Thickness(region.Left * imageControl.ActualWidth, region.Top * imageControl.ActualHeight, 0, 0),
DataContext = new RegionEditorViewModel
{
Region = region,
AvailableTags = this.imageViewModel.AvailableTags,
TagHintForNewRegions = this.imageViewModel.TagHintForNewRegions
}
};
editor.RegionChanged += OnRegionChanged;
editor.RegionDeleted += OnRegionDeleted;
imageRegionsCanvas.Children.Add(editor);
}
private void OnRegionDeleted(object sender, EventArgs e)
{
RegionEditorControl regionControl = (RegionEditorControl)sender;
this.imageRegionsCanvas.Children.Remove(regionControl);
var regionBeingDeleted = ((RegionEditorViewModel)regionControl.DataContext).Region;
ImageViewModel imgViewModel = (ImageViewModel)this.DataContext;
if (imgViewModel.Image.Regions != null && imgViewModel.Image.Regions.Contains(regionBeingDeleted))
{
imgViewModel.DeletedImageRegions.Add(regionBeingDeleted);
}
else if (imgViewModel.AddedImageRegions.Contains(regionBeingDeleted))
{
imgViewModel.AddedImageRegions.Remove(regionBeingDeleted);
}
needsSaving = true;
}