/// <summary>
/// Adds all defined <see cref="ImageFrame"/> sizes to the "Image Frame Sizes" <see
/// cref="ComboBox"/> on the <see cref="StructureTab"/> page.</summary>
/// <remarks><para>
/// <b>AddImageSizes</b> iterates through all <see cref="EntityImage.Frames"/> of every <see
/// cref="EntityImage"/> in the current <see cref="ImageSection"/>, and adds all unique <see
/// cref="ImageFrame.Bounds"/> sizes to the "Image Frame Sizes" combo box.
/// </para><para>
/// The combo box and the "Circumscribe" button are disabled if the <see
/// cref="ImageSection"/> does not define any <see cref="ImageFrame"/> objects.
/// </para></remarks>
private void AddImageSizes()
{
// extract all distinct sizes of image frames
List <SizeI> sizes = new List <SizeI>();
foreach (EntityImage image in MasterSection.Instance.Images.Collection.Values)
{
if (image != null)
{
for (int i = 0; i < image.Frames.Count; i++)
{
SizeI size = image.Frames[i].Bounds.Size;
if (!sizes.Contains(size))
{
sizes.Add(size);
}
}
}
}
if (sizes.Count == 0)
{
// disable controls if no image sizes defined
CircumscribeButton.IsEnabled = false;
ImageSizeCombo.IsEnabled = false;
ImageSizeCombo.Items.Add(Global.Strings.LabelNone);
}
else
{
// sort image sizes by width, then by height
sizes.Sort((x, y) => {
int delta = x.Width - y.Width;
return(delta != 0 ? delta : x.Height - y.Height);
});
// add image sizes to combo box
foreach (SizeI size in sizes)
{
ImageSizeItem item = new ImageSizeItem(size);
ImageSizeCombo.Items.Add(item);
}
}
Debug.Assert(ImageSizeCombo.Items.Count > 0);
ImageSizeCombo.SelectedIndex = 0;
}
/// <summary>
/// Handles the <see cref="ButtonBase.Click"/> event for the "Circumscribe" <see
/// cref="Button"/> on the <see cref="StructureTab"/> page.</summary>
/// <param name="sender">
/// The <see cref="Object"/> where the event handler is attached.</param>
/// <param name="args">
/// A <see cref="RoutedEventArgs"/> object containing event data.</param>
/// <remarks><para>
/// <b>OnCircumscribe</b> sets the "Side Length" control to a value that circumscribes <see
/// cref="PolygonGrid.Element"/> of the <see cref="MapGrid"/> around the selected item, if
/// any, in the "Image Frame Sizes" combo box.
/// </para><para>
/// Changing the "Side Length" control triggers <see cref="OnLengthChanged"/> which resizes
/// the <see cref="PolygonGrid.Element"/> accordingly and sets the <see cref="DataChanged"/>
/// flag.</para></remarks>
private void OnCircumscribe(object sender, RoutedEventArgs args)
{
args.Handled = true;
if (this._ignoreEvents)
{
return;
}
// get selected image size, if any
ImageSizeItem item = ImageSizeCombo.SelectedItem as ImageSizeItem;
if (item == null)
{
return;
}
// circumscribe polygon around image size
RegularPolygon element = MapGrid.Element;
var circumscribed = element.Circumscribe(item.Value.Width, item.Value.Height);
// restrict side length to legal range
double length = circumscribed.Length;
if (length < AreaSection.MinPolygonLength)
{
length = AreaSection.MinPolygonLength;
}
if (length > AreaSection.MaxPolygonLength)
{
length = AreaSection.MaxPolygonLength;
}
// show new side length if changed (triggers OnLengthChanged)
if (length != element.Length)
{
LengthUpDown.Value = (decimal)length;
}
}
