/// <summary>
/// Prints the page.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="PrintPageEventArgs" /> instance containing the event data.</param>
private void PrintPageHandler(object sender, PrintPageEventArgs e)
{
const int LineHeight = 10;
const string TextFontName = "Courier New";
const int TextFontSize = 7;
e.HasMorePages = false;
using (Font textFont = new Font(TextFontName, TextFontSize, FontStyle.Regular))
using (Font textFontBold = new Font(TextFontName, TextFontSize, FontStyle.Bold))
{
float y = 0;
float dpiXRatio = e.Graphics.DpiX / 96f; // 96dpi = 100%
float dpiYRatio = e.Graphics.DpiY / 96f; // 96dpi = 100%
// This calculation isn't exactly the width of the rendered text.
// All the calculations occurring in the rendering code of PrintTextLine. It almost needs to run that code and use e.Graphics.MeasureString()
// the first time to get the true contentWidth, then re-run the same logic using the true contentWidth for rendering.
//
// For now, the rendering is close, but it's not 'exact' center due to the mismatch in estimated vs. true size
float contentWidth = this.parts.Where(x => x.TextType == TextType.Text).Select(p => p.Value).Max(str => str.Replace(NormalTextMarker, string.Empty).Replace(BoldTextMarker, string.Empty).Length) * dpiXRatio; // Line with max length = content width
for (; this.printLine < this.parts.Count; this.printLine++)
{
var part = this.parts[this.printLine];
if (part.TextType == TextType.Text)
{
if (!this.PrintTextLine(e, LineHeight, textFont, textFontBold, dpiYRatio, contentWidth, dpiXRatio, part.Value, ref y))
{
return;
}
}
else if (part.TextType == TextType.LegacyLogo)
{
byte[] defaultLogoBytes = this.defaultLogo.GetBytes();
if (!DrawBitmapImage(e, defaultLogoBytes, contentWidth, ref y))
{
return;
}
}
else if (part.TextType == TextType.LogoWithBytes)
{
byte[] image = TextLogoParser.GetLogoImageBytes(part.Value);
if (!DrawBitmapImage(e, image, contentWidth, ref y))
{
return;
}
}
}
}
}
/// <summary>
/// Prints the logo embedded in a logo tag via base64 encoding.
/// </summary>
/// <param name="logoText">The logo text.</param>
private void PrintLogo(string logoText)
{
byte[] image = TextLogoParser.GetLogoImageBytes(logoText);
this.PrintLogoBytes(image);
}
/// <summary>
/// Appends the logo embedded in a logo tag via base64 encoding.
/// </summary>
/// <param name="receipt">The receipt content builder.</param>
/// <param name="logoText">The logo text.</param>
private void AppendLogo(StringBuilder receipt, string logoText)
{
byte[] image = TextLogoParser.GetLogoImageBytes(logoText);
this.AppendLogoBytes(receipt, image);
}
