public DraggedItem(ItemVisualizer sourceItemVisualizer)
{
DropOnStashEffect = DragDropEffects.Move;
DropOnInventoryEffect = DragDropEffects.Copy;
DropOnBinEffect = DragDropEffects.Move;
SourceItemVisualizer = sourceItemVisualizer;
var mainWindow = (MetroWindow) Application.Current.MainWindow;
var dragScope = (UIElement)mainWindow.Content;
var imageSource = sourceItemVisualizer.Item.Image.ImageSource.Result;
var brush = new ImageBrush(imageSource) { Opacity = 0.5 };
_dragAdorner = new DragAdorner(dragScope, new Size(imageSource.Width, imageSource.Height), brush);
DragStart = Mouse.GetPosition(SourceItemVisualizer);
// DragStart is subtracted for the cursor to be on the item image at the same position as where the drag
// was initiated.
// The window position is subtracted because the cursor position is retrieved as an absolute value.
// The title bar height is subtracted because the content used for the adorner does not include it.
var winPos = GetWindowPosition(mainWindow);
_offset.X = -DragStart.X - winPos.X;
_offset.Y = -DragStart.Y - winPos.Y - mainWindow.TitlebarHeight;
_adornerLayer = AdornerLayer.GetAdornerLayer(dragScope);
_adornerLayer.Add(_dragAdorner);
DragDrop.AddGiveFeedbackHandler(sourceItemVisualizer, GiveFeedback);
}
public DraggedItem(ItemVisualizer sourceItemVisualizer)
{
DropOnStashEffect = DragDropEffects.Move;
DropOnInventoryEffect = DragDropEffects.Copy;
DropOnBinEffect = DragDropEffects.Move;
SourceItemVisualizer = sourceItemVisualizer;
var mainWindow = (MetroWindow)Application.Current.MainWindow;
var dragScope = (UIElement)mainWindow.Content;
var imageSource = sourceItemVisualizer.Item.Image.ImageSource.Result;
var brush = new ImageBrush(imageSource)
{
Opacity = 0.5
};
_dragAdorner = new DragAdorner(dragScope, new Size(imageSource.Width, imageSource.Height), brush);
DragStart = Mouse.GetPosition(SourceItemVisualizer);
// DragStart is subtracted for the cursor to be on the item image at the same position as where the drag
// was initiated.
// The window position is subtracted because the cursor position is retrieved as an absolute value.
// The title bar height is subtracted because the content used for the adorner does not include it.
var winPos = GetWindowPosition(mainWindow);
_offset.X = -DragStart.X - winPos.X;
_offset.Y = -DragStart.Y - winPos.Y - mainWindow.TitlebarHeight;
_adornerLayer = AdornerLayer.GetAdornerLayer(dragScope);
_adornerLayer.Add(_dragAdorner);
// Win32.GetCursorPos() returns logical pixels, WPF uses physical/device pixels.
// Need to scale from logical to physical if user has a custom UI scaling.
_uiScaling = PresentationSource.FromVisual(_dragAdorner).CompositionTarget.TransformToDevice;
DragDrop.AddGiveFeedbackHandler(sourceItemVisualizer, GiveFeedback);
}
private void InitialiseAdorner(UIElement listViewItem)
{
var brush = new VisualBrush(listViewItem);
_adorner = new DragAdorner(listViewItem, listViewItem.RenderSize, brush) { Opacity = 0.5 };
_layer = AdornerLayer.GetAdornerLayer(lvSavedBuilds);
_layer.Add(_adorner);
}
private void BeginDrag(MouseEventArgs e)
{
var listView = lvSavedBuilds;
var listViewItem = ((DependencyObject)e.OriginalSource).FindAnchestor<ListViewItem>();
if (listViewItem == null)
return;
// get the data for the ListViewItem
var item = listView.ItemContainerGenerator.ItemFromContainer(listViewItem);
//setup the drag adorner.
InitialiseAdorner(listViewItem);
//add handles to update the adorner.
listView.PreviewDragOver += ListViewDragOver;
listView.DragLeave += ListViewDragLeave;
listView.DragEnter += ListViewDragEnter;
var data = new DataObject("myFormat", item);
DragDrop.DoDragDrop(lvSavedBuilds, data, DragDropEffects.Move);
//cleanup
listView.PreviewDragOver -= ListViewDragOver;
listView.DragLeave -= ListViewDragLeave;
listView.DragEnter -= ListViewDragEnter;
if (_adorner != null)
{
AdornerLayer.GetAdornerLayer(listView).Remove(_adorner);
_adorner = null;
SaveBuildsToFile();
}
}