////////////////////////////////////////////////////////////////////
/// <summary>
/// Draw barcode
/// </summary>
/// <param name="PosX">Position X</param>
/// <param name="PosY">Position Y</param>
/// <param name="Justify">Barcode justify (using TextJustify enumeration)</param>
/// <param name="BarWidth">Narrow bar width</param>
/// <param name="BarHeight">Barcode height</param>
/// <param name="BarColor">Barcode color</param>
/// <param name="Barcode">Derived barcode class</param>
/// <param name="TextFont">Text font</param>
/// <param name="FontSize">Text font size</param>
/// <returns>Barcode width</returns>
/// <remarks>
/// <para>
/// PosX can be the left, centre or right side of the barcode.
/// The Justify argument controls the meaning of PosX.
/// PosY is the position of the bottom side of the barcode.
/// If optional text is displayed it will be
/// displayed below PosY. If optional text is wider than the
/// barcode it will be extended to the left and right sides
/// of the barcode.
/// </para>
/// <para>
/// The BarWidth argument is the width of the narrow bar.
/// </para>
/// <para>
/// The BarcodeHeight argument is the height of the barcode
/// excluding optional text.
/// </para>
/// <para>
/// Set Barcode to one of the derived classes.
/// This library supports: Barcode128, Barcode39 and BarcodeEAN13.
/// Note BarcodeEAN13 supports Barcode UPC-A.
/// </para>
/// <para>
/// Barcode text is optional. If TextFont and FontSize are omitted
/// no text will be drawn under the barcode. If TextFont and
/// FontSize are specified the barcode text will be displayed
/// under the barcode. It will be horizontally centered in relation
/// to the barcode.
/// </para>
/// <para>
/// Barcode text is displayed below PosY. Make sure to leave
/// space under the barcode.
/// </para>
/// <para>
/// If color other than black is given make sure there is
/// a good contrast to white.
/// </para>
/// </remarks>
////////////////////////////////////////////////////////////////////
public Double DrawBarcode(
Double PosX,
Double PosY,
TextJustify Justify,
Double BarWidth,
Double BarHeight,
Color BarColor,
Barcode Barcode,
PdfFont TextFont = null,
Double FontSize = 0.0
)
{
// save graphics state
SaveGraphicsState();
// set barcode color
SetColorNonStroking(BarColor);
// barcode width
Double TotalWidth = BarWidth * Barcode.TotalWidth;
// switch for adjustment
switch(Justify)
{
case TextJustify.Center:
PosX -= 0.5 * TotalWidth;
break;
case TextJustify.Right:
PosX -= TotalWidth;
break;
}
// initial bar position
Double BarPosX = PosX;
// initialize bar color to black
Boolean Bar = true;
// all barcodes except EAN-13 or UPC-A
if(Barcode.GetType() != typeof(BarcodeEAN13))
{
// loop for all bars
for(Int32 Index = 0; Index < Barcode.BarCount; Index++)
{
// bar width in user units
Double Width = BarWidth * Barcode.BarWidth(Index);
// draw black bars
if(Bar) DrawRectangle(BarPosX, PosY, Width, BarHeight, PaintOp.Fill);
// update bar position and color
BarPosX += Width;
Bar = !Bar;
}
// display text if font is specified
if(TextFont != null) DrawBarcodeText(TextFont, FontSize, PosX + 0.5 * TotalWidth, PosY, TextJustify.Center, Barcode.Text);
}
// EAN-13 or UPC-A
else
{
// loop for all bars
for(Int32 Index = 0; Index < Barcode.BarCount; Index++)
{
// bar width in user units
Double Width = BarWidth * Barcode.BarWidth(Index);
// adjust vertical position
Double DeltaY = Index < 7 || Index >= 27 && Index < 32 || Index >= 52 ? 0.0 : 5 * BarWidth;
// draw black bars
if(Bar) DrawRectangle(BarPosX, PosY + DeltaY, Width, BarHeight - DeltaY, PaintOp.Fill);
// update bar position and color
BarPosX += Width;
Bar = !Bar;
}
// display text if font is specified
if(TextFont != null)
{
// substrings positions
Double PosX1 = PosX - 2.0 * BarWidth;
Double PosX2 = PosX + 27.5 * BarWidth;
Double PosX3 = PosX + 67.5 * BarWidth;
Double PosX4 = PosX + 97.0 * BarWidth;
Double PosY1 = PosY + 5.0 * BarWidth;
// UPC-A
if(Barcode.Text.Length == 12)
{
DrawBarcodeText(TextFont, FontSize, PosX1, PosY1, TextJustify.Right, Barcode.Text.Substring(0, 1));
DrawBarcodeText(TextFont, FontSize, PosX2, PosY1, TextJustify.Center, Barcode.Text.Substring(1, 5));
DrawBarcodeText(TextFont, FontSize, PosX3, PosY1, TextJustify.Center, Barcode.Text.Substring(6, 5));
DrawBarcodeText(TextFont, FontSize, PosX4, PosY1, TextJustify.Left, Barcode.Text.Substring(11));
}
// EAN-13
else
{
DrawBarcodeText(TextFont, FontSize, PosX1, PosY1, TextJustify.Right, Barcode.Text.Substring(0, 1));
DrawBarcodeText(TextFont, FontSize, PosX2, PosY1, TextJustify.Center, Barcode.Text.Substring(1, 6));
DrawBarcodeText(TextFont, FontSize, PosX3, PosY1, TextJustify.Center, Barcode.Text.Substring(7));
}
}
}
// restore graphics state
RestoreGraphicsState();
// return width
return(TotalWidth);
}
////////////////////////////////////////////////////////////////////
/// <summary>
/// Draw barcode
/// </summary>
/// <param name="PosX">Position X</param>
/// <param name="PosY">Position Y</param>
/// <param name="Justify">Barcode justify (using TextJustify enumeration)</param>
/// <param name="BarWidth">Narrow bar width</param>
/// <param name="BarcodeHeight">Barcode height</param>
/// <param name="Barcode">Derived barcode class</param>
/// <param name="TextFont">Text font</param>
/// <param name="FontSize">Text font size</param>
/// <returns>Barcode width</returns>
/// <remarks>
/// <para>
/// PosX can be the left, centre or right side of the barcode.
/// The Justify argument controls the meaning of PosX.
/// PosY is the position of the bottom side of the barcode.
/// If optional text is displayed it will be
/// displayed below PosY. If optional text is wider than the
/// barcode it will be extended to the left and right sides
/// of the barcode.
/// </para>
/// <para>
/// The BarWidth argument is the width of the narrow bar.
/// </para>
/// <para>
/// The BarcodeHeight argument is the height of the barcode
/// excluding optional text.
/// </para>
/// <para>
/// Set Barcode to one of the derived classes.
/// This library supports: Barcode128, Barcode39 and BarcodeEAN13.
/// Note BarcodeEAN13 supports Barcode UPC-A.
/// </para>
/// <para>
/// Barcode text is optional. If TextFont and FontSize are omitted
/// no text will be drawn under the barcode. If TextFont and
/// FontSize are specified the barcode text will be displayed
/// under the barcode. It will be horizontally centered in relation
/// to the barcode.
/// </para>
/// <para>
/// Barcode text is displayed below PosY. Make sure to leave
/// space under the barcode.
/// </para>
/// </remarks>
////////////////////////////////////////////////////////////////////
public Double DrawBarcode(
Double PosX,
Double PosY,
TextJustify Justify,
Double BarWidth,
Double BarcodeHeight,
Barcode Barcode,
PdfFont TextFont = null,
Double FontSize = 0.0
)
{
return(DrawBarcode(PosX, PosY, Justify, BarWidth, BarcodeHeight, Color.Black, Barcode, TextFont, FontSize));
}
