protected override void OnColorPointVisualDragDelta(ColorPointVisual colorPointVisual, Point position)
{
base.OnColorPointVisualDragDelta(colorPointVisual, position);
_dragOrginalPosition = new Point(_dragOrginalPosition.X + position.X, _dragOrginalPosition.Y + position.Y);
//Debug.WriteLine(_dragOrginalPosition.X + " " + _dragOrginalPosition.Y);
colorPointVisual.ColorPoint.HsvColor = GetColor(_dragOrginalPosition, colorPointVisual.ColorPoint.HsvColor);
}
/// <summary>
/// 将 DragDeltaCommand 依赖项属性的值设置为指定元素。
/// </summary>
/// <param name="obj">The element on which to set the property value.</param>
/// <param name="value">The property value to set.</param>
public static void SetDragDeltaCommand(ColorPointVisual obj, ICommand value)
{
obj.SetValue(DragDeltaCommandProperty, value);
}
/// <summary>
// 从指定元素获取 DragDeltaCommand 依赖项属性的值。
/// </summary>
/// <param name="obj">The element from which the property value is read.</param>
/// <returns>DragDeltaCommand 依赖项属性的值</returns>
public static ICommand GetDragDeltaCommand(ColorPointVisual obj)
{
return((ICommand)obj.GetValue(DragDeltaCommandProperty));
}
protected override void OnColorPointVisualDragStarted(ColorPointVisual colorPointVisual, Point position)
{
base.OnColorPointVisualDragStarted(colorPointVisual, position);
_dragOrginalPosition = position;
}
public DragDeltaCommandParameter(ColorPointVisual colorPointVisual, Point translation)
{
ColorPointVisual = colorPointVisual;
Translation = translation;
}
public DragStartedCommandParameter(ColorPointVisual colorPointVisual, Point position)
{
ColorPointVisual = colorPointVisual;
Position = position;
}
protected virtual void OnColorPointVisualDragDelta(ColorPointVisual colorPointVisual, Point position)
{
}
protected virtual void OnColorPointVisualDragStarted(ColorPointVisual colorPointVisual, Point position)
{
}