public void CancelDrag(IInputModeContext inputModeContext, PointD originalLocation)
{
// restore original value
ClipboardBusinessObject clipboardBusinessObject = node.Tag as ClipboardBusinessObject;
if (clipboardBusinessObject != null)
{
clipboardBusinessObject.Value = originalValue;
}
}
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;
}
}
public void HandleMove(IInputModeContext inputModeContext, PointD originalLocation, PointD newLocation)
{
double minVal = node.Layout.X + 10;
double maxVal = node.Layout.X + node.Layout.Width - 10;
double currentVal = newLocation.X;
double ratio = ((currentVal - minVal) / (maxVal - minVal));
ClipboardBusinessObject clipboardBusinessObject = node.Tag as ClipboardBusinessObject;
if (clipboardBusinessObject != null)
{
double oldValue = clipboardBusinessObject.Value;
clipboardBusinessObject.Value = ratio;
}
}
public void Paint(IRenderContext renderContext, Graphics graphics)
{
var node = Node;
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 vizualize 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);
}
}