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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// No-frills example of how to initialize and call into a PDFium environment,
// from C. The PDFium API is compatible with C (the C++ internals are hidden
// beneath it).
#include <string.h>
#include "public/fpdf_edit.h"
#include "public/fpdf_formfill.h"
#include "public/fpdfview.h"
int main(int argc, const char* argv[]) {
// The PDF library must be initialized before creating a document.
FPDF_LIBRARY_CONFIG config;
memset(&config, 0, sizeof(config));
config.version = 3;
FPDF_InitLibraryWithConfig(&config);
// The document must be created before creating a form-fill environment.
// Typically use FPDF_LoadDocument() for pre-existing documents. Here, we
// create a new blank document for simplicity.
FPDF_DOCUMENT doc = FPDF_CreateNewDocument();
FPDF_FORMFILLINFO formfillinfo;
memset(&formfillinfo, 0, sizeof(formfillinfo));
formfillinfo.version = 1;
FPDF_FORMHANDLE form_handle =
FPDFDOC_InitFormFillEnvironment(doc, &formfillinfo);
// Typically use FPDF_LoadPage() for pre-existing pages. Here, we
// create a new blank page for simplicity.
FPDF_PAGE page = FPDFPage_New(doc, 0, 640.0, 480.0);
FORM_OnAfterLoadPage(page, form_handle);
FORM_DoPageAAction(page, form_handle, FPDFPAGE_AACTION_OPEN);
// Do actual work with the page here.
FORM_DoPageAAction(page, form_handle, FPDFPAGE_AACTION_CLOSE);
FORM_OnBeforeClosePage(page, form_handle);
FPDF_ClosePage(page);
FORM_DoDocumentAAction(form_handle, FPDFDOC_AACTION_WC);
FPDFDOC_ExitFormFillEnvironment(form_handle);
FPDF_CloseDocument(doc);
FPDF_DestroyLibrary();
return 0;
}