private void DragLeft( double scale, DesignerItem item, DesignerCanvas canvas )
{
var groupItems = canvas.SelectionService.GetGroupMembers( canvas, item ).Cast<DesignerItem>();
double groupLeft = Canvas.GetLeft( item ) + item.Width;
foreach ( var groupItem in groupItems )
{
double groupItemLeft = Canvas.GetLeft( groupItem );
double delta = (groupLeft - groupItemLeft) * (scale - 1);
Canvas.SetLeft( groupItem, groupItemLeft - delta );
groupItem.Width = groupItem.ActualWidth * scale;
}
}
private XElement Serialize( DesignerItem item )
{
var contentXaml = XElement.Parse( XamlWriter.Save( item.Content ) );
RewriteImageSource( contentXaml );
return new XElement( "DesignerItem",
new XElement( "Left", Canvas.GetLeft( item ) ),
new XElement( "Top", Canvas.GetTop( item ) ),
new XElement( "Width", item.Width ),
new XElement( "Height", item.Height ),
new XElement( "ID", myIdTransformation.GetId( item.ID ) ),
new XElement( "zIndex", Canvas.GetZIndex( item ) ),
new XElement( "IsGroup", item.IsGroup ),
new XElement( "ParentID", myIdTransformation.GetId( item.ParentID ) ),
new XElement( "Content",
new XAttribute( "Version", "1" ),
contentXaml.ToString() )
);
}
private void Group_Executed( object sender, ExecutedRoutedEventArgs e )
{
var items = from item in this.SelectionService.CurrentSelection.OfType<DesignerItem>()
where item.ParentID == Guid.Empty
select item;
Rect rect = GetBoundingRectangle( items );
var groupItem = new DesignerItem();
groupItem.IsGroup = true;
groupItem.Width = rect.Width;
groupItem.Height = rect.Height;
Canvas.SetLeft( groupItem, rect.Left );
Canvas.SetTop( groupItem, rect.Top );
var itemContent = new ItemContent();
// TODO: copy does NOT work
// itemContent.Properties = new ItemPropertyCollection( items.SelectMany( item => ((ItemContent)item.Content).Properties ) );
groupItem.Content = itemContent;
Canvas.SetZIndex( groupItem, Children.Count );
Children.Add( groupItem );
foreach( var item in items )
{
item.ParentID = groupItem.ID;
}
SelectionService.SelectItem( this, groupItem );
}
private void DragTop( double scale, DesignerItem item, DesignerCanvas canvas )
{
var groupItems = canvas.SelectionService.GetGroupMembers( canvas, item ).Cast<DesignerItem>();
double groupBottom = Canvas.GetTop( item ) + item.Height;
foreach ( var groupItem in groupItems )
{
double groupItemTop = Canvas.GetTop( groupItem );
double delta = (groupBottom - groupItemTop) * (scale - 1);
Canvas.SetTop( groupItem, groupItemTop - delta );
groupItem.Height = groupItem.ActualHeight * scale;
}
}
private void DragBottom( double scale, DesignerItem item, DesignerCanvas canvas )
{
IEnumerable<DesignerItem> groupItems = canvas.SelectionService.GetGroupMembers( canvas, item ).Cast<DesignerItem>();
double groupTop = Canvas.GetTop( item );
foreach ( DesignerItem groupItem in groupItems )
{
double groupItemTop = Canvas.GetTop( groupItem );
double delta = (groupItemTop - groupTop) * (scale - 1);
Canvas.SetTop( groupItem, groupItemTop + delta );
groupItem.Height = groupItem.ActualHeight * scale;
}
}
private DesignerItem DeserializeDesignerItem( XElement itemXML, Guid id )
{
var item = new DesignerItem( id );
item.Width = Double.Parse( itemXML.Element( "Width" ).Value, CultureInfo.InvariantCulture );
item.Height = Double.Parse( itemXML.Element( "Height" ).Value, CultureInfo.InvariantCulture );
item.ParentID = new Guid( itemXML.Element( "ParentID" ).Value );
item.IsGroup = Boolean.Parse( itemXML.Element( "IsGroup" ).Value );
Canvas.SetLeft( item, Double.Parse( itemXML.Element( "Left" ).Value, CultureInfo.InvariantCulture ) );
Canvas.SetTop( item, Double.Parse( itemXML.Element( "Top" ).Value, CultureInfo.InvariantCulture ) );
Canvas.SetZIndex( item, Int32.Parse( itemXML.Element( "zIndex" ).Value ) );
DeserializeItemContent( itemXML, item );
return item;
}
private void DeserializeItemContent( XElement itemXML, DesignerItem item )
{
var contentContainerElement = itemXML.Element( "Content" );
var versionAttribute = contentContainerElement.Attribute( "Version" );
var contentText = ConvertBladeNamespaces(contentContainerElement.Value);
using (var reader = XmlReader.Create(new StringReader(contentText)))
{
var contentXml = XElement.Load(reader);
RewriteImageSource(contentXml);
var content = XamlReader.Load(contentXml.CreateReader());
if (versionAttribute == null)
{
UpgradeItemContent((ItemContent)content);
}
item.Content = content;
}
}
