private void Thumbnail_MouseWheel(object sender, MouseWheelEventArgs e)
{
if (e.Delta == 0)
{
return;
}
Thumbnail thumbnail = sender as Thumbnail;
if (thumbnail == null)
{
return;
}
if (e.Delta > 0)
{
thumbnail.Scale += ScaleDelta;
}
else
{
thumbnail.Scale = Math.Max(ScaleDelta, thumbnail.Scale - ScaleDelta);
}
}
private void SetContextMenu(Thumbnail thumbnail)
{
ContextMenu contextMenu = new ContextMenu();
MenuItem toggleItem = new MenuItem()
{
Header = Globalization.UIMessages.ToggleClientOnlyMenuItem,
IsCheckable = true,
};
Binding checkedBinding = new Binding("IsChecked")
{
Source = toggleItem,
};
thumbnail.SetBinding(Thumbnail.ClientAreaOnlyProperty, checkedBinding);
contextMenu.Items.Add(toggleItem);
MenuItem selectorItem = new MenuItem()
{
Header = Globalization.UIMessages.SelectRegionMenuItem,
};
Binding enabledBinding = new Binding("IsEnabled")
{
Source = selectorItem,
Converter = Converters.BooleanToggleConverter.Instance,
Mode = BindingMode.OneWayToSource,
};
toggleItem.SetBinding(MenuItem.IsCheckedProperty, enabledBinding);
selectorItem.Click += (sender, e) =>
{
Rect region = thumbnail.DrawnRegion;
RegionSelector selector = new RegionSelector();
selector.thumbnail.Scale = Math.Min(RegionSelector.ViewerWidth / region.Width, RegionSelector.ViewerHeight / region.Height);
selector.thumbnail.ClientAreaOnly = thumbnail.ClientAreaOnly;
selector.Loaded += (a, b) =>
{
selector.Background = Brushes.Transparent;
selector.ExtendFrame(RegionSelector.AeroRegion, Colors.Transparent);
selector.thumbnail.SetWindow(thumbnail.Target);
selector.SourceX = region.X;
selector.SourceY = region.Y;
selector.SourceWidth = region.Width;
selector.SourceHeight = region.Height;
};
selector.ContentRendered += (a, b) =>
{
selector.thumbnail.DrawnRegion = region;
};
if (selector.ShowDialog().GetValueOrDefault(false) == true)
{
thumbnail.DrawnRegion = selector.thumbnail.DrawnRegion;
}
};
contextMenu.Items.Add(selectorItem);
contextMenu.Items.Add(new Separator());
MenuItem removeItem = new MenuItem()
{
Header = Globalization.UIMessages.RemoveMenuItem,
};
removeItem.Click += (sender, e) =>
{
thumbnail.Dispose();
canvas.Children.Remove(thumbnail);
};
contextMenu.Items.Add(removeItem);
thumbnail.ContextMenu = contextMenu;
}
private void BringToFront(Thumbnail thumbnail)
{
thumbnail.BringToFront();
canvas.Children.Remove(thumbnail);
canvas.Children.Add(thumbnail);
}