/// <summary>
/// Takes place when the control is initialized or invalidated.
/// </summary>
/// <param name="e">The event args.</param>
protected override void OnInitialize(PaintEventArgs e)
{
if (_cellSize.Width == 0)
{
_cellSize.Width = 50;
_cellSize.Height = 50;
}
if (TextFont == null)
{
TextFont = new Font("Arial", 9);
}
DocumentRectangle = new Rectangle(0, 0, (NumColumns * _cellSize.Width) + 1, (NumRows * _cellSize.Height) + 1);
if (DynamicColumns)
{
int newColumns = (Width - 20) / _cellSize.Width;
if (newColumns != NumColumns)
{
e.Graphics.FillRectangle(Brushes.White, e.ClipRectangle);
NumColumns = newColumns;
Invalidate();
return;
}
}
if (NumColumns == 0)
{
NumColumns = 1;
}
for (int i = 0; i < SymbolizerList.Count; i++)
{
int row = i / NumColumns;
int col = i % NumColumns;
CustomSymbolizer sym = SymbolizerList[i];
Point pointLocation = new(col * _cellSize.Width, row *_cellSize.Height);
Rectangle rect = new(pointLocation, _cellSize);
DrawSymbolizer(e.Graphics, rect, sym);
}
Brush backBrush = new SolidBrush(SelectionBackColor);
Brush foreBrush = new SolidBrush(SelectionForeColor);
if (_isSelected)
{
Rectangle sRect = GetSelectedRectangle();
e.Graphics.FillRectangle(backBrush, sRect);
if (SelectedSymbolizer != null)
{
DrawSymbolizer(e.Graphics, sRect, SelectedSymbolizer);
OnSymbolSelected();
}
}
backBrush.Dispose();
foreBrush.Dispose();
}
/// <summary>
/// Creates the new custom symbolizer with the specified name and category
/// </summary>
/// <returns>the custom symbolizer</returns>
private CustomSymbolizer CreateCustomSymbolizer()
{
CustomSymbolizer custSym = null;
if (_symbolizer is PointSymbolizer)
{
custSym = new CustomPointSymbolizer();
}
else if (_symbolizer is LineSymbolizer)
{
custSym = new CustomLineSymbolizer();
}
else if (_symbolizer is PolygonSymbolizer)
{
custSym = new CustomPolygonSymbolizer();
}
if (custSym != null)
{
custSym.Symbolizer = _symbolizer;
custSym.Name = _txtSymbolName.Text;
custSym.Category = _cmbSymbolCategory.Text;
return(custSym);
}
return(null);
}
private void btnOK_Click(object sender, EventArgs e)
{
//creates the new custom symbolizer
CustomSymbolizer newCustSym = CreateCustomSymbolizer();
if (newCustSym != null)
{
_customSymbolizer = newCustSym;
}
Close();
}
private void btnOK_Click(object sender, EventArgs e)
{
//creates the new custom symbolizer
CustomSymbolizer newCustSym = CreateCustomSymbolizer();
if (newCustSym != null)
{
_customSymbolizer = newCustSym;
}
Close();
}
