private Rectangle GetLineRectangle(Cell from, Cell to, WorkflowLineDirection direction)
{
Rectangle rectStartCell = GetCellRectangle(new Cell(null, from.RowIndex, from.ColumnIndex));
Rectangle rectEndCell = GetCellRectangle(new Cell(null, to.RowIndex, to.ColumnIndex));
Rectangle lineRectangle = Rectangle.Empty;
switch (direction)
{
case WorkflowLineDirection.LEFT:
case WorkflowLineDirection.RIGHT:
// Horizontal Line
Image hline = ParentWorkflow.LineImage.HLINE;
lineRectangle.X = rectStartCell.X + (rectStartCell.Width / 2);
lineRectangle.Y = rectStartCell.Y + (rectStartCell.Height / 2) - (hline.Height / 2);
lineRectangle.Height = hline.Height;
lineRectangle.Width = (rectEndCell.X + (rectEndCell.Width / 2)) - lineRectangle.X;
break;
case WorkflowLineDirection.TOP:
case WorkflowLineDirection.BOTTOM:
// Vertical Line
Image vline = ParentWorkflow.LineImage.VLINE;
lineRectangle.X = rectStartCell.X + (rectStartCell.Width / 2) - (vline.Width / 2);
lineRectangle.Y = rectStartCell.Y + (rectStartCell.Height / 2);
lineRectangle.Width = vline.Width;
lineRectangle.Height = rectEndCell.Y + (rectEndCell.Height / 2) - lineRectangle.Y;
break;
}
return(lineRectangle);
}
/// <summary>
/// Get image of line from line direction.
/// </summary>
/// <param name="direction"></param>
/// <returns></returns>
private Image GetImageFromLineDirection(WorkflowLineDirection direction)
{
switch (direction)
{
case WorkflowLineDirection.LEFT:
case WorkflowLineDirection.RIGHT:
return(ParentWorkflow.LineImage.HLINE);
case WorkflowLineDirection.TOP:
case WorkflowLineDirection.BOTTOM:
return(ParentWorkflow.LineImage.VLINE);
}
return(ParentWorkflow.LineImage.EMPTY);
}
private void GenerateArrowSpaceForEndPoint(List <WorkflowLineDetail> lineEndPoints)
{
for (int i = 0; i < lineEndPoints.Count(); i++)
{
WorkflowLineDetail line = lineEndPoints[i];
WorkflowLineDirection direction = line.GetLineDirection();
Cell cell = GetIndexWorkFlowButtonCell(line.ToCell.RowIndex, line.ToCell.ColumnIndex);
WorkflowColumnStyle columnStyle = null;
WorkflowRowStyle rowStyle = null;
switch (direction)
{
case WorkflowLineDirection.LEFT:
// add space on right side of Button cell.
columnStyle = new WorkflowColumnStyle(SizeType.Absolute, WorkflowColumnType.DisplayArrow);
columnStyle.Width = ARROW_SPACE;
ParentWorkflow.InsertColumn(cell.ColumnIndex + 1, columnStyle);
break;
case WorkflowLineDirection.TOP:
// add space on bottom side of Button cell.
rowStyle = new WorkflowRowStyle(SizeType.Absolute, WorkflowRowType.DisplayArrow);
rowStyle.Height = ARROW_SPACE;
ParentWorkflow.InsertRow(cell.RowIndex + 1, rowStyle);
break;
case WorkflowLineDirection.RIGHT:
// add space on left side of Button cell.
columnStyle = new WorkflowColumnStyle(SizeType.Absolute, WorkflowColumnType.DisplayArrow);
columnStyle.Width = ARROW_SPACE;
ParentWorkflow.InsertColumn(cell.ColumnIndex, columnStyle);
break;
case WorkflowLineDirection.BOTTOM:
// add space on top side of Button cell.
rowStyle = new WorkflowRowStyle(SizeType.Absolute, WorkflowRowType.DisplayArrow);
rowStyle.Height = ARROW_SPACE;
ParentWorkflow.InsertRow(cell.RowIndex, rowStyle);
break;
}
}
}
/// <summary>
/// Get image of arrow from line direction.
/// </summary>
/// <param name="direction"></param>
/// <returns></returns>
private Image GetArrowImageFromLineDirection(WorkflowLineDirection direction)
{
switch (direction)
{
case WorkflowLineDirection.LEFT:
return(ParentWorkflow.LineImage.ARROW_LEFT);
case WorkflowLineDirection.TOP:
return(ParentWorkflow.LineImage.ARROW_UP);
case WorkflowLineDirection.RIGHT:
return(ParentWorkflow.LineImage.ARROW_RIGHT);
case WorkflowLineDirection.BOTTOM:
return(ParentWorkflow.LineImage.ARROW_DOWN);
}
return(ParentWorkflow.LineImage.EMPTY);
}
private Rectangle GetArrowRectangle(Cell cell, WorkflowLineDirection direction)
{
Rectangle cellRect = GetCellRectangle(cell);
Image arrowImg = GetArrowImageFromLineDirection(direction);
Rectangle arrowRect = Rectangle.Empty;
arrowRect.Width = arrowImg.Width;
arrowRect.Height = arrowImg.Height;
switch (direction)
{
case WorkflowLineDirection.LEFT:
arrowRect.X = cellRect.X;
arrowRect.Y = cellRect.Y + (cellRect.Height / 2) - (arrowImg.Height / 2);
break;
case WorkflowLineDirection.TOP:
arrowRect.X = cellRect.X + (cellRect.Width / 2) - (arrowImg.Width / 2);
arrowRect.Y = cellRect.Y;
break;
case WorkflowLineDirection.RIGHT:
arrowRect.X = cellRect.Right - arrowRect.Width;
arrowRect.Y = cellRect.Y + (cellRect.Height / 2) - (arrowImg.Height / 2);
break;
case WorkflowLineDirection.BOTTOM:
arrowRect.X = cellRect.X + (cellRect.Width / 2) - (arrowImg.Width / 2);
arrowRect.Y = cellRect.Bottom - arrowImg.Height;
break;
case WorkflowLineDirection.NONE:
break;
default:
throw new ArgumentOutOfRangeException("direction");
}
return(arrowRect);
}
/// <summary>
/// Drawing line follow line detail direction.
/// </summary>
/// <param name="g"></param>
/// <param name="line">Line detail of start-end point that will drawing</param>
private void DrawLine(Graphics g, WorkflowLineDetail line)
{
Cell fromCell = GetIndexWorkFlowButtonCell(line.FromCell.RowIndex, line.FromCell.ColumnIndex);
Cell toCell = GetIndexWorkFlowButtonCell(line.ToCell.RowIndex, line.ToCell.ColumnIndex);
Cell startCell = null;
Cell endCell = null;
WorkflowLineDirection direction = line.GetLineDirection();
switch (direction)
{
case WorkflowLineDirection.LEFT:
if (line.Status == WorkflowLineStatus.EndPoint)
{
toCell.ColumnIndex += 1;
}
startCell = toCell;
endCell = fromCell;
break;
case WorkflowLineDirection.TOP:
if (line.Status == WorkflowLineStatus.EndPoint)
{
toCell.RowIndex += 1;
}
startCell = toCell;
endCell = fromCell;
break;
case WorkflowLineDirection.RIGHT:
if (line.Status == WorkflowLineStatus.EndPoint)
{
toCell.ColumnIndex -= 1;
}
startCell = fromCell;
endCell = toCell;
break;
case WorkflowLineDirection.BOTTOM:
if (line.Status == WorkflowLineStatus.EndPoint)
{
toCell.RowIndex -= 1;
}
startCell = fromCell;
endCell = toCell;
break;
case WorkflowLineDirection.NONE:
return;
}
if (startCell == null || endCell == null)
{
return;
}
// Draw Straight-Line (Without Arrow).
Rectangle lineRect = GetLineRectangle(startCell, endCell, direction);
Image img = GetImageFromLineDirection(direction);
//img = ImageHelper.GetThumbnailImage(img, lineRect.Width, lineRect.Height);
img = ImageHelper.ResizeImage(img, lineRect.Width, lineRect.Height);
g.DrawImage(img, lineRect);
img.Dispose();
if (line.Status == WorkflowLineStatus.EndPoint)
{
Image arrowImg = GetArrowImageFromLineDirection(direction);
Rectangle arrowRect = GetArrowRectangle(toCell, direction);
g.DrawImage(arrowImg, arrowRect);
}
}
