/// <summary>
/// Checks if a <see cref="DragEventArgs.Data"/> is valid to be dropped to the check list box.
/// </summary>
/// <param name="e">A <see cref="T:System.Windows.Forms.DragEventArgs" /> that contains the event data.</param>
/// <returns><c>true</c> if the <see cref="DragEventArgs.Data"/> is valid to be dropped to the check list box, <c>false</c> otherwise.</returns>
private bool CheckListCanDrop(DragEventArgs e)
{
var data = (SortText)e.Data.GetData(typeof(SortText));
if (DragDropOrigin != null && DragDropOrigin.Equals(listCheckSortStyles))
{
var checkListBox = listCheckSortStyles;
int index = checkListBox.IndexFromPoint(checkListBox.PointToClient(new Point(e.X, e.Y)));
if (checkListBox.Items.IndexOf(data) == index)
{
return(false);
}
return(true);
}
if (e.Data.GetDataPresent(typeof(SortText)))
{
if (!e.Data.GetDataPresent(typeof(SortText)))
{
return(false);
}
if (SortStyleExists(data))
{
return(false);
}
}
return(true);
}
//Draw generic cell for drag or drop. Used when dragging items
void drawCell(DragDropOrigin origin, Rect cellPos, Rect iconPos, int Index)
{
if (origin == DragDropOrigin.DragBox)
{
drawDragCell(cellPos, iconPos, Index);
}
if (origin == DragDropOrigin.DropBox)
{
drawDropCell(cellPos, iconPos, Index);
}
}
//Draw and manage drag and drop icons
void DrawDragDropIcons()
{
Rect cellPos = new Rect(); //Background cell rect
cellPos.width = cellSize;
cellPos.height = cellSize;
Rect iconPos = new Rect(); //Icon cell rect
iconPos.width = cellSize * iconScale;
iconPos.height = cellSize * iconScale;
float delta = (cellPos.width - iconPos.width) / 2f;
for (int i = 0; i < dragRows; i++)
{
cellPos.y = dragTitleSize + dragRect.y + cellPadding + (i * (cellSize + cellPadding));
iconPos.y = cellPos.y + delta;
for (int j = 0; j < dragCols; j++)
{
cellPos.x = dragRect.x + cellPadding + (j * (cellSize + cellPadding));
iconPos.x = cellPos.x + delta;
if (cellPos.Contains(Event.current.mousePosition) && Event.current.isMouse && Event.current.type == EventType.mouseUp && draggingItem)
{
dropItemInDrag((i * dragCols) + j);
if (autosave)
{
saveSong(dragDropName);
}
draggingItem = false;
draggedSlotIndex = -1;
draggedIndex = -1;
itemOrigin = DragDropOrigin.None;
}
//If dragging this item => draw empty and continue
if (draggedSlotIndex == (i * dragCols) + j && itemOrigin == DragDropOrigin.DragBox)
{
GUI.DrawTexture(cellPos, dragEmptySlot);
continue;
}
//If start dragging set the proper variables
if (cellPos.Contains(Event.current.mousePosition) && dragSlots[(i * dragCols) + j] != -1)
{
if (Event.current.isMouse && Event.current.button == 0 && Event.current.type == EventType.mouseDrag && !draggingItem)
{
draggingItem = true;
draggedSlotIndex = (i * dragCols) + j;
draggedIndex = dragSlots[draggedSlotIndex];
itemOrigin = DragDropOrigin.DragBox;
//Trigger variables
}
}
//Draw the drag cell
drawDragCell(cellPos, iconPos, (i * dragCols) + j);
if (!draggingItem && cellPos.Contains(Event.current.mousePosition) && dragSlots[(i * dragCols) + j] != -1 && showHints)
{
tooltip = CreateTooltip(dragDropItems[dragSlots[(i * dragCols) + j]]);
showTooltip = true;
}
if (tooltip == "")
{
showTooltip = false;
}
}
}
//Goes for drop slots
for (int i = 0; i < dropRows; i++)
{
cellPos.y = dropTitleSize + dropRect.y + cellPadding + (i * (cellSize + cellPadding));
iconPos.y = cellPos.y + delta;
for (int j = 0; j < dropCols; j++)
{
cellPos.x = dropRect.x + cellPadding + (j * (cellSize + cellPadding));
iconPos.x = cellPos.x + delta;
if (cellPos.Contains(Event.current.mousePosition) && Event.current.isMouse && Event.current.type == EventType.mouseUp && draggingItem)
{
dropItemInDrop((i * dropCols) + j);
if (autosave)
{
saveSong(dragDropName);
}
draggingItem = false;
draggedSlotIndex = -1;
draggedIndex = -1;
itemOrigin = DragDropOrigin.None;
}
//If dragging this item => draw empty and continue
if (draggedSlotIndex == (i * dropCols) + j && itemOrigin == DragDropOrigin.DropBox)
{
GUI.DrawTexture(cellPos, dropEmptySlot);
continue;
}
//If start dragging set the proper variables
if (cellPos.Contains(Event.current.mousePosition) && dropSlots[(i * dragCols) + j] != -1)
{
if (Event.current.isMouse && Event.current.button == 0 && Event.current.type == EventType.mouseDrag && !draggingItem)
{
draggingItem = true;
draggedSlotIndex = (i * dropCols) + j;
draggedIndex = dropSlots[draggedSlotIndex];
itemOrigin = DragDropOrigin.DropBox;
}
}
//Draw the drop cell
drawDropCell(cellPos, iconPos, (i * dropCols) + j);
if (!draggingItem && cellPos.Contains(Event.current.mousePosition) && dropSlots[(i * dropCols) + j] != -1 && showHints)
{
tooltip = CreateTooltip(dragDropItems[dropSlots[(i * dropCols) + j]]);
showTooltip = true;
}
if (tooltip == "")
{
showTooltip = false;
}
}
}
//Draw the dragged itemS
if (draggingItem)
{
cellPos.x = Event.current.mousePosition.x - (cellSize / 2);
cellPos.y = Event.current.mousePosition.y - (cellSize / 2);
iconPos.x = cellPos.x + delta;
iconPos.y = cellPos.y + delta;
drawCell(itemOrigin, cellPos, iconPos, draggedSlotIndex);
}
//Mouse up in clear area... stops dragging
if (Event.current.isMouse && Event.current.type == EventType.mouseUp && draggingItem)
{
//Setting trigger variables
originSlot = draggedSlotIndex;
destinationSlot = -1;
droppedItemIndex = draggedIndex;
originIsDrag = (itemOrigin == DragDropOrigin.DragBox)?true:false;
destinationIsDrag = false;
dropErrorCode = DropErrorCode.notAllowedArea;
gameObject.SendMessage("DropTrigger", this);
draggingItem = false;
draggedSlotIndex = -1;
draggedIndex = -1;
itemOrigin = DragDropOrigin.None;
}
}
