//private void SelectedLayerChangedCommandDo(int? layerIndex)
//{
// if (layerIndex == null || layerIndex == SelectedLayer)
// return;
// _selectedLayer = (int)layerIndex;
// //GridMapItems.Clear();
// for (int i = 0; i < _map.RackCount; i++)
// {
// for(int j = 0; j < _map.ColumnCount; j++)
// {
// GridMapItems[i * _map.ColumnCount + j].SingleStorage = _map[_selectedLayer, i, j];
// string color = "#";
// Random random = new Random();
// for(int c = 0; c < 3; c++)
// {
// if (random.NextDouble() > 0.5)
// color += "ff";
// else
// color += "00";
// }
// GridMapItems[i * _map.ColumnCount + j].Color = color;
// }
// }
//}
private void ExcuteAreaCanvasLeftButtonDownCommandDo(Models.ExParameters p)
{
//Canvas canvas = p.Parameter as Canvas;
//MouseButtonEventArgs e = p.EventArgs as MouseButtonEventArgs;
//Point point = e.GetPosition(canvas);
//DownPoint = point;
}
private void ExcuteAreaCanvasLeftButtonUpCommandDo(Models.ExParameters p)
{
if (!CanGridMapSelect)
{
return;
}
Canvas canvas = p.Parameter as Canvas;
MouseButtonEventArgs e = p.EventArgs as MouseButtonEventArgs;
Point point = e.GetPosition(canvas);
if (!(DownPoint.X == 0 && DownPoint.Y == 0) &&
Math.Abs(DownPoint.X - point.X) > AreaThreshold && Math.Abs(DownPoint.Y - point.Y) > AreaThreshold)
{
//To set Selected ListBox Item
for (int i = 0; i < gridMapItems.Count; i++)
{
if ((gridMapItems[i].TopPad + gridMapItems[i].Height > AreaRectTopPad && gridMapItems[i].TopPad < AreaRectTopPad + AreaRectHeight) &&
(gridMapItems[i].LeftPad + gridMapItems[i].Width > AreaRectLeftPad && gridMapItems[i].LeftPad < AreaRectLeftPad + AreaRectWidth))
{
gridMapItems[i].IsSelected = true;
}
else
{
gridMapItems[i].IsSelected = false;
}
}
}
ExecuteModifyCommand.RaiseCanExecuteChanged();
AreaRectHeight = 0;
AreaRectLeftPad = 0;
AreaRectWidth = 0;
AreaRectHeight = 0;
DownPoint = new Point();
}
/// <summary>
/// 调用操作。
/// </summary>
/// <param name="parameter">操作的参数。如果操作不需要参数，则可以将参数设置为空引用。</param>
protected override void Invoke(object parameter)
{
if (base.AssociatedObject != null)
{
ICommand command = this.ResolveCommand();
/*
* ★★★★★★★★★★★★★★★★★★★★★★★★
* 注意这里添加了事件触发源和事件参数
* ★★★★★★★★★★★★★★★★★★★★★★★★
*/
Models.ExParameters exParameter = new Models.ExParameters
{
Sender = base.AssociatedObject,
Parameter = GetValue(CommandParameterProperty),
EventArgs = parameter as EventArgs
};
if (command != null && command.CanExecute(exParameter))
{
/*
* ★★★★★★★★★★★★★★★★★★★★★★★★
* 注意将扩展的参数传递到Execute方法中
* ★★★★★★★★★★★★★★★★★★★★★★★★
*/
command.Execute(exParameter);
}
}
}
private void ExcuteAreaCanvasMoveCommandDo(Models.ExParameters p)
{
if (!CanGridMapSelect)
{
return;
}
Canvas canvas = p.Parameter as Canvas;
MouseEventArgs e = p.EventArgs as MouseEventArgs;
Point point = e.GetPosition(canvas);
//System.Diagnostics.Debug.WriteLine(point.X + "--" + point.Y + "=================" + DownPoint.X + "--" + DownPoint.Y);
if (e.LeftButton == MouseButtonState.Pressed)
{
if (DownPoint.X == 0 && DownPoint.Y == 0)
{
DownPoint = point;
}
AreaRectWidth = Math.Abs(point.X - DownPoint.X);
AreaRectHeight = Math.Abs(point.Y - DownPoint.Y);
AreaRectLeftPad = Math.Min(point.X, DownPoint.X);
AreaRectTopPad = Math.Min(point.Y, DownPoint.Y);
}
}
