Add image stamps to PDF in C++

Add image stamps with position, size, rotation, opacity, or quality settings and add a floating-box background image using Aspose.PDF for C++.

Add a positioned image stamp

  1. Open the input PDF as a Document.
  2. Create an ImageStamp from imageFile.
  3. Set background mode, position, dimensions, rotation, and opacity.
  4. Call AddStamp() on page 1.
  5. Save the result with Save().

#include <Aspose.PDF.Cpp/Document.h>
#include <Aspose.PDF.Cpp/ImageStamp.h>
#include <Aspose.PDF.Cpp/Page.h>
#include <Aspose.PDF.Cpp/PageCollection.h>
#include <Aspose.PDF.Cpp/Rotation.h>

using namespace System;
using namespace Aspose::Pdf;

// Port of StampingExamples.addImageStamp.
void AddImageStamp(System::String inputFile, System::String imageFile, System::String outputFile)
{
    auto document = MakeObject<Document>(inputFile);

    auto imageStamp = MakeObject<ImageStamp>(imageFile);
    imageStamp->set_Background(true);
    imageStamp->set_XIndent(100);
    imageStamp->set_YIndent(100);
    imageStamp->set_Height(300);
    imageStamp->set_Width(300);
    imageStamp->set_Rotate(Rotation::on270);
    imageStamp->set_Opacity(0.5);

    document->get_Pages()->idx_get(1)->AddStamp(imageStamp);
    document->Save(outputFile);
}

Set image stamp quality

The low quality setting can affect image appearance. Review the saved output.

  1. Open the input PDF as a Document.
  2. Create an ImageStamp from imageFile.
  3. Set Quality to 10.
  4. Call AddStamp() on page 1.
  5. Save the result with Save().

#include <Aspose.PDF.Cpp/Document.h>
#include <Aspose.PDF.Cpp/ImageStamp.h>
#include <Aspose.PDF.Cpp/Page.h>
#include <Aspose.PDF.Cpp/PageCollection.h>

using namespace System;
using namespace Aspose::Pdf;

// Port of StampingExamples.addImageStampWithQualityControl.
void AddImageStampWithQualityControl(System::String inputFile, System::String imageFile, System::String outputFile)
{
    auto document = MakeObject<Document>(inputFile);

    auto imageStamp = MakeObject<ImageStamp>(imageFile);
    imageStamp->set_Quality(10);
    document->get_Pages()->idx_get(1)->AddStamp(imageStamp);
    document->Save(outputFile);
}

Add a floating-box background image

This adds a paragraph-based floating box rather than calling AddStamp().

  1. Open the input PDF as a Document.
  2. Select page 1 and create a FloatingBox sized 200 by 100.
  3. Configure position, alignment, text, and border.
  4. Create an Image and assign it as BackgroundImage.
  5. Set the background color and add the box to the page paragraphs.
  6. Save the result with Save().

#include <Aspose.PDF.Cpp/Generator/BorderInfo.h>
#include <Aspose.PDF.Cpp/Generator/BorderSide.h>
#include <Aspose.PDF.Cpp/Color.h>
#include <Aspose.PDF.Cpp/Document.h>
#include <Aspose.PDF.Cpp/Generator/FloatingBox.h>
#include <Aspose.PDF.Cpp/Text/Font.h>
#include <Aspose.PDF.Cpp/HorizontalAlignment.h>
#include <Aspose.PDF.Cpp/Generator/Image.h>
#include <Aspose.PDF.Cpp/Page.h>
#include <Aspose.PDF.Cpp/PageCollection.h>
#include <Aspose.PDF.Cpp/Generator/Paragraphs.h>
#include <Aspose.PDF.Cpp/Text/TextFragment.h>
#include <Aspose.PDF.Cpp/Text/TextState.h>

using namespace System;
using namespace Aspose::Pdf;
using namespace Aspose::Pdf::Text;

// Port of StampingExamples.addImageAsBackgroundInFloatingBox.
void AddImageAsBackgroundInFloatingBox(System::String inputFile, System::String imageFile, System::String outputFile)
{
    auto document = MakeObject<Document>(inputFile);

    auto page = document->get_Pages()->idx_get(1);
    auto box = MakeObject<FloatingBox>(200.0f, 100.0f);
    box->set_Left(40);
    box->set_Top(80);
    box->set_HorizontalAlignment(HorizontalAlignment::Center);
    box->get_Paragraphs()->Add(MakeObject<TextFragment>(u"Text in Floating Box"));
    box->set_Border(MakeObject<BorderInfo>(BorderSide::All, Color::get_Red()));

    auto image = MakeObject<Image>();
    image->set_File(imageFile);
    box->set_BackgroundImage(image);
    box->set_BackgroundColor(Color::get_Yellow());
    page->get_Paragraphs()->Add(box);

    document->Save(outputFile);
}
Add text stamps to PDF in C++