/// <summary>
/// Estimate the barcode width
/// </summary>
/// <param name="InputData"></param>
/// <param name="BarWeight"></param>
/// <param name="AddQuietZone"></param>
/// <returns></returns>
public static int EstimateWidth(string InputData, int BarWeight, bool AddQuietZone)
{
// get the Code128 codes to represent the message
Code128Content content = new Code128Content(InputData);
int[] codes = content.Codes;
int width;
width = ((codes.Length - 3) * 11 + 35) * BarWeight;
//height = Convert.ToInt32(System.Math.Ceiling(Convert.ToSingle(width) * .15F));
if (AddQuietZone)
{
width += 2 * cQuietWidth * BarWeight; // on both sides
}
// first we need to get the total width of barcode, to calculate scale value
float barcode_width = 0;
if (AddQuietZone)
{
barcode_width += 2 * cQuietWidth * BarWeight; // on both sides
}
for (int codeidx = 0; codeidx < codes.Length; codeidx++)
{
int code = codes[codeidx];
// take the bars two at a time: a black and a white
for (int bar = 0; bar < 8; bar += 2)
{
float barwidth = cPatterns[code, bar] * BarWeight;
float spcwidth = cPatterns[code, bar + 1] * BarWeight;
// advance cursor beyond this pair
barcode_width += (barwidth + spcwidth);
}
}
return((int)Math.Ceiling(barcode_width));
}
/// <summary>
/// Make an image of a Code128 barcode for a given string
/// </summary>
/// <param name="InputData">Message to be encoded</param>
/// <param name="BarWeight">Base thickness for bar width (1 or 2 works well)</param>
/// <param name="AddQuietZone">Add required horiz margins (use if output is tight)</param>
/// <returns>An Image of the Code128 barcode representing the message</returns>
public static int MakeBarcodeImage(string InputData, int BarWeight, bool AddQuietZone, ref Graphics gr, float y, float max_width)
{
float scale = 1f;
// get the Code128 codes to represent the message
Code128Content content = new Code128Content(InputData);
int[] codes = content.Codes;
int width, height;
width = ((codes.Length - 3) * 11 + 35) * BarWeight;
//height = Convert.ToInt32(System.Math.Ceiling(Convert.ToSingle(width) * .15F));
height = 40;
if (AddQuietZone)
{
width += 2 * cQuietWidth * BarWeight; // on both sides
}
// first we need to get the total width of barcode, to calculate scale value
float barcode_width = 0;
if (AddQuietZone)
{
barcode_width += 2 * cQuietWidth * BarWeight; // on both sides
}
for (int codeidx = 0; codeidx < codes.Length; codeidx++)
{
int code = codes[codeidx];
// take the bars two at a time: a black and a white
for (int bar = 0; bar < 8; bar += 2)
{
float barwidth = cPatterns[code, bar] * BarWeight;
float spcwidth = cPatterns[code, bar + 1] * BarWeight;
// advance cursor beyond this pair
barcode_width += (barwidth + spcwidth);
}
}
if (barcode_width > max_width)
{
//need to scale
scale = max_width / barcode_width;
}
// skip quiet zone
float cursor = 0;
cursor += gr.VisibleClipBounds.Width / 2 - barcode_width * scale / 2;
if (AddQuietZone)
{
cursor += cQuietWidth * BarWeight * scale;
}
for (int codeidx = 0; codeidx < codes.Length; codeidx++)
{
int code = codes[codeidx];
// take the bars two at a time: a black and a white
for (int bar = 0; bar < 8; bar += 2)
{
float barwidth = cPatterns[code, bar] * BarWeight * scale;
float spcwidth = cPatterns[code, bar + 1] * BarWeight * scale;
// if width is zero, don't try to draw it
if (barwidth > 0)
{
gr.FillRectangle(System.Drawing.Brushes.Black, cursor, y, barwidth, height);
}
// note that we never need to draw the space, since we
// initialized the graphics to all white
// advance cursor beyond this pair
cursor += (barwidth + spcwidth);
}
}
return(height);
}
