public static bool IsValid(this IPdfBuildModel buildModel)
{
if (buildModel == null)
{
return(false);
}
if (string.IsNullOrWhiteSpace(buildModel.DocumentTitle))
{
return(false);
}
if (string.IsNullOrWhiteSpace(buildModel.HtmlContent))
{
return(false);
}
if (buildModel.UsePageCount &&
string.IsNullOrWhiteSpace(buildModel.HeaderCenterText) &&
string.IsNullOrWhiteSpace(buildModel.HeaderLeftText) &&
string.IsNullOrWhiteSpace(buildModel.HeaderRightText) &&
string.IsNullOrWhiteSpace(buildModel.FooterCenterText) &&
string.IsNullOrWhiteSpace(buildModel.FooterLeftText) &&
string.IsNullOrWhiteSpace(buildModel.FooterRightText))
{
return(false);
}
return(true);
}
private static WebSettings BuildDefaultWebSettings(IPdfBuildModel buildModel, IPdfPageSpecification pdfPageSpecification)
{
return(new WebSettings
{
DefaultEncoding = pdfPageSpecification.DefaultEncoding,
UserStyleSheet = pdfPageSpecification.UserStyleSheet,
});
}
private static HeaderSettings BuildDefaultHeaderSettings(IPdfBuildModel buildModel, IPdfPageSpecification pdfPageSpecification)
=> new HeaderSettings
{
FontName = pdfPageSpecification.FontName,
FontSize = pdfPageSpecification.FontSize,
Line = buildModel.UseHeaderLine,
Left = buildModel.HeaderLeftText ?? string.Empty,
Center = buildModel.HeaderCenterText ?? string.Empty,
Right = buildModel.HeaderRightText ?? string.Empty,
Spacing = pdfPageSpecification.PageSpacing
};
private static FooterSettings BuildDefaultFooterSettings(IPdfBuildModel buildModel, IPdfPageSpecification pdfPageSpecification)
=> new FooterSettings
{
FontName = pdfPageSpecification.FontName,
FontSize = pdfPageSpecification.FontSize,
Line = buildModel.UseFooterLine,
Left = buildModel.FooterLeftText ?? string.Empty,
Center = buildModel.FooterCenterText ?? string.Empty,
Right = buildModel.FooterRightText ?? string.Empty,
Spacing = pdfPageSpecification.PageSpacing,
HtmUrl = buildModel.HtmlUri ?? string.Empty
};
private Task <GlobalSettings> GetGlobalSettings(IPdfBuildModel buildModel, IPdfPageSpecification pdfPageSpecification)
{
if (!buildModel.IsValid())
{
throw new ArgumentNullException(nameof(BuildDefaultWebSettings));
}
var globalSettings = new GlobalSettings
{
ColorMode = pdfPageSpecification.PageColorMode,
Orientation = pdfPageSpecification.PageOrientation,
PaperSize = pdfPageSpecification.PaperSize,
Margins = pdfPageSpecification.PageMargins,
DocumentTitle = buildModel.DocumentTitle,
};
return(Task.FromResult(globalSettings));
}
public async Task <byte[]> CreatePdfDocument(IPdfBuildModel buildModel, IPdfPageSpecification pdfPageSpecification)
{
try
{
if (!buildModel.IsValid())
{
throw new ArgumentNullException(nameof(buildModel));
}
GlobalSettings globalSettings = await GetGlobalSettings(buildModel, pdfPageSpecification);
ObjectSettings objectSettings = await GetDefaultObjectSettings(buildModel, pdfPageSpecification);
HtmlToPdfDocument pdfDocument = await ConvertToPdf(globalSettings, objectSettings);
return(_converter.Convert(pdfDocument));
}
catch (Exception ex)
{
throw new ArgumentException(nameof(CreatePdfDocument), ex);
}
}
private Task <ObjectSettings> GetDefaultObjectSettings(IPdfBuildModel buildModel, IPdfPageSpecification pdfPageSpecification)
{
if (string.IsNullOrWhiteSpace(buildModel.HtmlContent))
{
throw new ArgumentNullException(nameof(GetDefaultObjectSettings));
}
var objectSettings = new ObjectSettings
{
FooterSettings = BuildDefaultFooterSettings(buildModel, pdfPageSpecification),
HeaderSettings = BuildDefaultHeaderSettings(buildModel, pdfPageSpecification),
HtmlContent = buildModel.HtmlContent,
PagesCount = buildModel.UsePageCount,
WebSettings = BuildDefaultWebSettings(pdfPageSpecification),
};
// Issue with libwkhtmltox if false is used
if (objectSettings.PagesCount.HasValue && objectSettings.PagesCount.Value.Equals(false))
{
objectSettings.PagesCount = null;
}
return(Task.FromResult(objectSettings));
}
