public void InitializeDrag(IInputModeContext inputModeContext)
{
// remember the original value so the drag can be cancelled correctly
ClipboardBusinessObject clipboardBusinessObject = node.Tag as ClipboardBusinessObject;
if (clipboardBusinessObject != null)
{
originalValue = clipboardBusinessObject.Value;
}
}
private static object CreateBusinessObjectFromTagCopyItem(object tag)
{
TagCopyItem copyItem = (TagCopyItem)tag;
copyItem.incPasteCount();
ClipboardBusinessObject origObject = (ClipboardBusinessObject)copyItem.Tag;
string name;
if (copyItem.PasteCount < 2)
{
name = "Copy of " + origObject.Name;
}
else
{
name = "Copy (" + copyItem.PasteCount + ") of " + origObject.Name;
}
return(new ClipboardBusinessObject {
Name = name, Value = origObject.Value
});
}
public void Paint(IRenderContext context, Graphics graphics)
{
var layout = node.Layout;
// Draw a rounded rectangle
double roundingX = layout.Width * roundingFactor;
double roundingY = layout.Height * roundingFactor;
ClipboardBusinessObject businessObject = node.Tag as ClipboardBusinessObject;
GraphicsPath upperPath = new GraphicsPath();
GraphicsPath lowerPath = new GraphicsPath();
upperPath.AddBezier((float)layout.X, (float)(layout.Y + roundingY), (float)layout.X,
(float)(layout.Y + (roundingY / 2)),
(float)(layout.X + (roundingX / 2)), (float)layout.Y, (float)(layout.X + roundingX), (float)layout.Y);
upperPath.AddLine((float)(layout.X + roundingX), (float)layout.Y,
(float)(layout.X + layout.Width - roundingX), (float)layout.Y);
upperPath.AddBezier((float)(layout.X + layout.Width - roundingX), (float)(layout.Y),
(float)(layout.X + layout.Width - (roundingX / 2)), (float)(layout.Y),
(float)(layout.X + layout.Width), (float)(layout.Y + (roundingY / 2)), (float)(layout.X + layout.Width),
(float)(layout.Y + roundingY));
upperPath.AddLine((float)(layout.X + layout.Width), (float)(layout.Y + roundingY),
(float)(layout.X + layout.Width), (float)(layout.Y + layout.Height / 2));
upperPath.AddLine((float)(layout.X + layout.Width), (float)(layout.Y + layout.Height / 2), (float)(layout.X),
(float)(layout.Y + layout.Height / 2));
upperPath.AddLine((float)(layout.X), (float)(layout.Y + layout.Height / 2), (float)layout.X,
(float)(layout.Y + roundingY));
lowerPath.AddBezier((float)(layout.X + layout.Width), (float)(layout.Y + layout.Height - roundingY),
(float)(layout.X + layout.Width), (float)(layout.Y + layout.Height - (roundingY / 2)),
(float)(layout.X + layout.Width - (roundingX / 2)), (float)(layout.Y + layout.Height),
(float)(layout.X + layout.Width - roundingX), (float)(layout.Y + layout.Height));
lowerPath.AddLine((float)(layout.X + layout.Width - roundingX), (float)(layout.Y + layout.Height),
(float)(layout.X + roundingX), (float)(layout.Y + layout.Height));
lowerPath.AddBezier((float)(layout.X + roundingX), (float)(layout.Y + layout.Height),
(float)(layout.X + (roundingX / 2)), (float)(layout.Y + layout.Height),
(float)(layout.X), (float)(layout.Y + layout.Height - (roundingY / 2)), (float)(layout.X),
(float)(layout.Y + layout.Height - roundingY));
lowerPath.AddLine((float)layout.X, (float)(layout.Y + layout.Height - roundingY), (float)(layout.X),
(float)(layout.Y + (layout.Height / 2)));
lowerPath.AddLine((float)layout.X, (float)(layout.Y + (layout.Height / 2)), (float)(layout.X + layout.Width),
(float)(layout.Y + (layout.Height / 2)));
lowerPath.AddLine((float)(layout.X + layout.Width), (float)(layout.Y + (layout.Height / 2)),
(float)(layout.X + layout.Width), (float)(layout.Y + layout.Height - roundingY));
graphics.FillPath(
new LinearGradientBrush(
new RectangleF((float)layout.X, (float)layout.Y, (float)layout.Width, (float)layout.Height),
Mix(Color.SkyBlue, Color.White, 0.5), Mix(Color.DodgerBlue, Color.White, 0.5), 90f), upperPath);
graphics.FillPath(
new LinearGradientBrush(
new RectangleF((float)layout.X, (float)layout.Y, (float)layout.Width, (float)layout.Height),
Color.SkyBlue, Color.DodgerBlue, 90f), lowerPath);
if (businessObject != null)
{
// Draw a line to visualize the business object's value
graphics.DrawLine(Pens.Black, (float)(layout.X + 10), (float)(layout.Y + (layout.Height * 3 / 4)),
(float)(layout.X + 10 + (layout.Width - 20) * businessObject.Value),
(float)(layout.Y + (layout.Height * 3 / 4)));
// Display the business object's name
graphics.DrawString(businessObject.Name, new Font("Arial", 8), Brushes.Black, (float)(layout.X + 10),
(float)layout.Y + 10);
}
}
/// <summary>
/// Creates an instance for the given business object which restores the given <paramref name="oldValue"/> upon undo.
/// </summary>
/// <param name="obj">The business object to handle.</param>
/// <param name="oldValue">The original value which will be restored upon undo.</param>
public BusinessValueUndoUnit(ClipboardBusinessObject obj, double oldValue) : base("Change Value")
{
this.obj = obj;
this.oldValue = oldValue;
}
