goo-pdf-testing/main.cpp at master · dacodas/goo-pdf-testing · GitHub

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#include "poppler/PDFDoc.h"
#include "goo/GooString.h"
#include "poppler/Link.h"

int main (int argc, char* argv[])
{
    // auto filename = GooString("/tmp/test.pdf");
    // auto filename = GooString("/tmp/blah.pdf");
    auto filename = GooString("/tmp/O3hcBbp9LFL1gLBvc3G5b3gNU1lORuuAPf08qpADjhM=/O3hcBbp9LFL1gLBvc3G5b3gNU1lORuuAPf08qpADjhM=.pdf");
    auto document = new PDFDoc(&filename);

    Page* page = document->getPage(1);
    Annots* annotations = page->getAnnots();
    Links* links = new Links(annotations);

    for (int i = 0; i < links->getNumLinks(); ++i)
    {
        AnnotLink* link = links->getLink(i);
        LinkAction* action = link->getAction();
        LinkActionKind action_kind = action->getKind();

        printf("This link has action %d\n", action_kind);

        switch (action_kind)
        {
            case actionGoTo:
            {
                LinkGoTo* goto_link = static_cast<LinkGoTo*>(action);
                const GooString* destination_name = goto_link->getNamedDest();
                printf("This is a GoTo link that goes to: %s\n", destination_name->getCString());

                PDFRectangle* original_rectangle = link->getRect();
                PDFRectangle new_rectangle = PDFRectangle(
                    original_rectangle->x1,
                    original_rectangle->y1,
                    original_rectangle->x2,
                    original_rectangle->y2);
                Array* rectangle_array = new Array(document->getXRef());
                rectangle_array->add(Object(new_rectangle.x1));
                rectangle_array->add(Object(new_rectangle.y1));
                rectangle_array->add(Object(new_rectangle.x2));
                rectangle_array->add(Object(new_rectangle.y2));

                Dict* annotation_dictionary = new Dict(document->getXRef());
                annotation_dictionary->set("Type", Object(objName, "Annot"));
                annotation_dictionary->set("Subtype", Object(objName, "Link"));
                annotation_dictionary->set("Rect", Object(rectangle_array));

                // A needs to be a dict
                // S: URI
                // URI: The destination
                Dict* action_dictionary = new Dict(document->getXRef());
                action_dictionary->set("S", Object(objName, "URI"));
                GooString* uri = new GooString("http://www.google.com");
                action_dictionary->set("URI", Object(uri));
                annotation_dictionary->set("A", Object(action_dictionary));

                Object* annotation_dictionary_object = new Object(annotation_dictionary);

                Ref ref = document->getXRef()->addIndirectObject(annotation_dictionary_object);
                Object* reference_object = new Object(ref.num, ref.gen);

                AnnotLink* new_link = new AnnotLink(document, annotation_dictionary_object, reference_object);

                page->removeAnnot(link);
                page->addAnnot(new_link);

                break;
            }
            case actionURI:
            {
                LinkURI* uri_link = static_cast<LinkURI*>(action);
                const GooString* uri = uri_link->getURI();
                printf("This is a URI link that goes to: %s\n", uri->getCString());

                // Array* destination_array = new Array(document->getXRef());

                // // Indirect reference to page
                // Page* destination_page = document->getPage(2);
                // Ref destination_page_reference = destination_page->getRef();
                // destination_array->add(Object(destination_page_reference.num, destination_page_reference.gen));
                // destination_array->add(Object(objName, "XYZ"));
                // destination_array->add(Object(objNull));
                // destination_array->add(Object(objNull));
                // destination_array->add(Object(objNull));

                // PDFRectangle* original_rectangle = link->getRect();
                // PDFRectangle new_rectangle = PDFRectangle(
                //     original_rectangle->x1,
                //     original_rectangle->y1,
                //     original_rectangle->x2,
                //     original_rectangle->y2);
                // Array* rectangle_array = new Array(document->getXRef());
                // rectangle_array->add(Object(new_rectangle.x1));
                // rectangle_array->add(Object(new_rectangle.y1));
                // rectangle_array->add(Object(new_rectangle.x2));
                // rectangle_array->add(Object(new_rectangle.y2));

                // Dict* annotation_dictionary = new Dict(document->getXRef());
                // annotation_dictionary->set("Type", Object(objName, "Annot"));
                // annotation_dictionary->set("Subtype", Object(objName, "Link"));
                // annotation_dictionary->set("Rect", Object(rectangle_array));

                // // A needs to be a dict
                // // S: URI
                // // URI: The destination
                // Dict* action_dictionary = new Dict(document->getXRef());
                // action_dictionary->set("S", Object(objName, "GoTo"));
                // action_dictionary->set("D", Object(destination_array));
                // annotation_dictionary->set("A", Object(action_dictionary));

                // Object* annotation_dictionary_object = new Object(annotation_dictionary);

                // Ref ref = document->getXRef()->addIndirectObject(annotation_dictionary_object);
                // Object* reference_object = new Object(ref.num, ref.gen);

                // AnnotLink* new_link = new AnnotLink(document, annotation_dictionary_object, reference_object);

                // page->removeAnnot(link);
                // page->addAnnot(new_link);

                break;
            }
            default:
            {
                printf("I don't know what to do with that action!\n");
                break;
            }
        }
    }

    auto output_filename = GooString("./output.pdf");
    document->saveAs(&output_filename);

    printf("Hello\n");
}