private void DrawLabel(Graphics g, LabelContent content, Rectangle paperRect)
{
var rightMargin = 0;
var leftMargin = 0;
// allow vertical binNumber to be written, if provided
if (!string.IsNullOrEmpty(PrinterSettings.PartLabelTemplate.Identifier.Content) && PrinterSettings.PartLabelTemplate.Identifier.Position == LabelPosition.Right)
{
rightMargin = 25;
}
if (!string.IsNullOrEmpty(PrinterSettings.PartLabelTemplate.Identifier.Content) && PrinterSettings.PartLabelTemplate.Identifier.Position == LabelPosition.Left)
{
leftMargin = 25;
}
var margins = new Margin(leftMargin, rightMargin, 0, 0);
// process template values
content.Line1 = content.Line1 ?? ReplaceTemplate(content.Part, PrinterSettings.PartLabelTemplate.Line1);
content.Line2 = content.Line2 ?? ReplaceTemplate(content.Part, PrinterSettings.PartLabelTemplate.Line2);
content.Line3 = content.Line3 ?? ReplaceTemplate(content.Part, PrinterSettings.PartLabelTemplate.Line3);
content.Line4 = content.Line4 ?? ReplaceTemplate(content.Part, PrinterSettings.PartLabelTemplate.Line4);
content.Identifier = content.Identifier ?? ReplaceTemplate(content.Part, PrinterSettings.PartLabelTemplate.Identifier);
// merge any adjascent template lines together
MergeLines(g, PrinterSettings.PartLabelTemplate, content, paperRect, margins);
var line1Position = DrawLine(g, new PointF(_labelStart[PrinterSettings.PartLabelTemplate.Line1.Label - 1].X, _labelStart[PrinterSettings.PartLabelTemplate.Line1.Label - 1].Y), content.Part, content.Line1, PrinterSettings.PartLabelTemplate.Line1, paperRect, margins);
var line2Position = DrawLine(g, line1Position, content.Part, content.Line2, PrinterSettings.PartLabelTemplate.Line2, paperRect, margins);
var line3Position = DrawLine(g, line2Position, content.Part, content.Line3, PrinterSettings.PartLabelTemplate.Line3, paperRect, margins);
var line4Position = DrawLine(g, line3Position, content.Part, content.Line4, PrinterSettings.PartLabelTemplate.Line4, paperRect, margins);
var identifierPosition = DrawLine(g, line4Position, content.Part, content.Identifier, PrinterSettings.PartLabelTemplate.Identifier, paperRect, margins);
}
/// <summary>
/// Merge all adjascent template lines
/// </summary>
/// <param name="template"></param>
/// <param name="content"></param>
/// <param name="paperRect"></param>
/// <param name="margins"></param>
private void MergeLines(Graphics g, PartLabelTemplate template, LabelContent content, Rectangle paperRect, Margin margins)
{
if (template.Line1.Content == template.Line2.Content)
{
MergeLines(g, content.Line1, content.Line2, paperRect, margins, out var newLine, out var newLine2);
content.Line1 = newLine;
content.Line2 = newLine2;
}
if (template.Line2.Content == template.Line3.Content)
{
MergeLines(g, content.Line2, content.Line3, paperRect, margins, out var newLine, out var newLine2);
content.Line2 = newLine;
content.Line3 = newLine2;
}
if (template.Line3.Content == template.Line4.Content)
{
MergeLines(g, content.Line3, content.Line4, paperRect, margins, out var newLine, out var newLine2);
content.Line3 = newLine;
content.Line4 = newLine2;
}
}
public Image PrintLabel(LabelContent content, PrinterOptions options)
{
if (content == null)
{
throw new ArgumentNullException(nameof(content));
}
_labelProperties = GetLabelDimensions(PrinterSettings.LabelName);
var doc = CreatePrinterDocument(options);
var g = Graphics.FromImage(_printImage);
DrawLabel(g, content, _paperRect);
// for debugging label layout
if (options.ShowDiagnostic)
{
DrawDebug(g);
}
if (!options.GenerateImageOnly)
{
doc.Print();
}
return(_printImage);
}
public Image PrintLabel(LabelContent content)
{
return(PrintLabel(content, PrinterOptions.None));
}