public override void Run(
)
{
// 1. Opening the PDF file...
string filePath = PromptFileChoice("Please select a PDF file");
using (var file = new File(filePath))
{
Document document = file.Document;
PageStamper stamper = new PageStamper(); // NOTE: Page stamper is used to draw contents on existing pages.
// 2. Iterating through the document pages...
foreach (Page page in document.Pages)
{
Console.WriteLine("\nScanning page " + page.Number + "...\n");
stamper.Page = page;
Extract(
new ContentScanner(page), // Wraps the page contents into a scanner.
stamper.Foreground
);
stamper.Flush();
}
// 3. Decorated version serialization.
Serialize(file);
}
}
private void Stamp(
Document document
)
{
// 1. Instantiate the stamper!
/* NOTE: The PageStamper is optimized for dealing with pages. */
PageStamper stamper = new PageStamper();
// 2. Numbering each page...
StandardType1Font font = new StandardType1Font(
document,
StandardType1Font.FamilyEnum.Courier,
true,
false
);
DeviceRGBColor redColor = DeviceRGBColor.Get(SKColors.Red);
int margin = 32;
foreach (Page page in document.Pages)
{
// 2.1. Associate the page to the stamper!
stamper.Page = page;
// 2.2. Stamping the page number on the foreground...
{
PrimitiveComposer foreground = stamper.Foreground;
foreground.SetFont(font, 16);
foreground.SetFillColor(redColor);
SKSize pageSize = page.Size;
int pageNumber = page.Number;
bool pageIsEven = (pageNumber % 2 == 0);
foreground.ShowText(
pageNumber.ToString(),
new SKPoint(
(pageIsEven
? margin
: pageSize.Width - margin),
pageSize.Height - margin
),
(pageIsEven
? XAlignmentEnum.Left
: XAlignmentEnum.Right),
YAlignmentEnum.Bottom,
0
);
}
// 2.3. End the stamping!
stamper.Flush();
}
}
private void ApplyWatermark(FormXObject watermark)
{
// 1. Instantiate the stamper!
/* NOTE: The PageStamper is optimized for dealing with pages. */
PageStamper stamper = new PageStamper();
// 2. Inserting the watermark into each page of the document...
foreach (Page page in watermark.Document.Pages)
{
// 2.1. Associate the page to the stamper!
stamper.Page = page;
// 2.2. Stamping the watermark on the foreground...
// Get the content composer!
PrimitiveComposer composer = stamper.Foreground;
// Show the watermark into the page background!
composer.ShowXObject(watermark);
// 2.3. End the stamping!
stamper.Flush();
}
}
