private void _DragItemDrop(GDragActionArgs e, ResizeItem resizeItem)
{
if (this._DragOwnerBoundsTarget.HasValue)
{
this._DragOwnerCall(e, this._DragOwnerBoundsTarget.Value);
}
}
private void _DragItemCancel(GDragActionArgs e, ResizeItem resizeItem)
{
if (this._DragOwnerBoundsOriginal.HasValue)
{
this._DragOwnerCall(e, this._DragOwnerBoundsOriginal.Value);
}
}
private void _DragItemStart(GDragActionArgs e, ResizeItem resizeItem)
{
this._DragOwnerBoundsOriginal = this._InteractiveOwner.Bounds;
this._DragOwnerMouseOriginal = e.MouseDownAbsolutePoint;
this._DragOwnerItemSide = resizeItem.Side;
this._DragOwnerCall(e, this._DragOwnerBoundsOriginal.Value);
}
/// <summary>
/// Tato metoda řídí proces Resize svého controlu s pomocí konkrétního <see cref="ResizeItem"/> prvku
/// </summary>
/// <param name="e"></param>
/// <param name="resizeItem"></param>
internal void DragItemAction(GDragActionArgs e, ResizeItem resizeItem)
{
switch (e.DragAction)
{
case DragActionType.DragThisStart:
this._DragItemStart(e, resizeItem);
break;
case DragActionType.DragThisMove:
this._DragItemMove(e, resizeItem);
break;
case DragActionType.DragThisCancel:
this._DragItemCancel(e, resizeItem);
break;
case DragActionType.DragThisDrop:
this._DragItemDrop(e, resizeItem);
break;
case DragActionType.DragThisEnd:
this._DragItemEnd();
break;
}
}
private void _DragItemMove(GDragActionArgs e, ResizeItem resizeItem)
{
Rectangle?bounds = this._DragItemGetBounds(e.MouseCurrentAbsolutePoint);
if (bounds.HasValue)
{
this._DragOwnerBoundsTarget = bounds;
this._DragOwnerCall(e, bounds.Value);
}
}
/// <summary>
/// Připraví jeden prvek <see cref="ResizeItem"/> pro jednu stranu "currentSide"
/// </summary>
/// <param name="requestSides">Požadované strany</param>
/// <param name="currentSide">Strana tohoto konkrétního prvku</param>
/// <param name="realSides">Souhrn viditelných stran</param>
/// <param name="item">Vizuální prvek</param>
private void _SetResizeSide(RectangleSide requestSides, RectangleSide currentSide, ref RectangleSide realSides, ref ResizeItem item)
{
bool isVisible = ((requestSides & currentSide) != 0);
if (!isVisible)
{ // Nemá být vidět:
if (item != null)
{
item.Is.Visible = false;
}
}
else
{ // Má být vidět:
if (item == null)
{
item = new ResizeItem(this, currentSide);
}
item.Is.Visible = true;
realSides |= currentSide;
this._ChildList.Add(item);
}
}
