コード例 #1
0
ファイル: TVDragDrop.cs プロジェクト: tcd1nc/AssetManager
        private static void Control_PreviewMouseDown(object sender, MouseButtonEventArgs e)
        {
            //if (IsMouseOverScrollbar)
            //{
            //    // 4/13/2007 - Set the flag to false when cursor is over scrollbar.
            //    canInitiateDrag = false;
            //    return;
            //}

            //int index = IndexUnderDragCursor;
            //canInitiateDrag = index > -1;

            //if (canInitiateDrag)
            //{
            // Remember the location - PARENT and index of the treeViewItem the user clicked on for later.
            if (SelectedTreeViewItem != null)
            {
                ptMouseDown = MouseUtilities.GetMousePosition(ThisTreeView);
                //indexToSelect = index;

                //MessageBox.Show(ptMouseDown.X.ToString() + " " + ptMouseDown.Y.ToString());
                //e.Handled = true;
            }

            else
            {
                ptMouseDown   = new Point(-10000, -10000);
                indexToSelect = null;// -1;

                // e.Handled = true;
            }
        }
コード例 #2
0
ファイル: TVDragDrop.cs プロジェクト: tcd1nc/AssetManager
        static bool IsMouseOver(Visual target)
        {
            // We need to use MouseUtilities to figure out the cursor
            // coordinates because, during a drag-drop operation, the WPF
            // mechanisms for getting the coordinates behave strangely.

            Rect  bounds   = VisualTreeHelper.GetDescendantBounds(target);
            Point mousePos = MouseUtilities.GetMousePosition(target);

            return(bounds.Contains(mousePos));
        }
コード例 #3
0
ファイル: TVDragDrop.cs プロジェクト: tcd1nc/AssetManager
        static void UpdateDragAdornerLocation()
        {
            if (dragAdorner != null)
            {
                Point ptCursor = MouseUtilities.GetMousePosition(ThisTreeView);

                double left = ptCursor.X - ptMouseDown.X;

                // 4/13/2007 - Made the top offset relative to the item being dragged.
                TreeViewItem itemBeingDragged = GettreeViewItem(indexToSelect);
                Point        itemLoc          = itemBeingDragged.TranslatePoint(new Point(0, 0), ThisTreeView);
                double       top = itemLoc.Y + ptCursor.Y - ptMouseDown.Y;

                dragAdorner.SetOffsets(left, top);
            }
        }
コード例 #4
0
ファイル: TVDragDrop.cs プロジェクト: tcd1nc/AssetManager
        static AdornerLayer InitializeAdornerLayer(TreeViewItem itemToDrag)
        {
            // Create a brush which will paint the treeViewItem onto
            // a visual in the adorner layer.
            VisualBrush brush = new VisualBrush(SelectedTreeViewItem);

            // Create an element which displays the source item while it is dragged.
            dragAdorner = new DragAdorner(SelectedTreeViewItem, SelectedTreeViewItem.RenderSize, brush)
            {
                // Set the drag adorner's opacity.
                Opacity = 0.7// DragAdornerOpacity
            };

            AdornerLayer layer = AdornerLayer.GetAdornerLayer(ThisTreeView);

            layer.Add(dragAdorner);

            // Save the location of the cursor when the left mouse button was pressed.
            ptMouseDown = MouseUtilities.GetMousePosition(ThisTreeView);

            return(layer);
        }