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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "pdfium_document_wrapper_qt.h"
#include <QtCore/qhash.h>
#include <QtGui/qimage.h>
#include <QtGui/qpainter.h>
#include "third_party/pdfium/public/fpdf_doc.h"
#include "third_party/pdfium/public/fpdfview.h"
namespace QtWebEngineCore {
int PdfiumDocumentWrapperQt::m_libraryUsers = 0;
PdfiumDocumentWrapperQt::PdfiumDocumentWrapperQt(const void *pdfData, size_t size,
const char *password)
{
Q_ASSERT(pdfData);
Q_ASSERT(size);
if (m_libraryUsers++ == 0)
FPDF_InitLibrary();
m_documentHandle = (void *)FPDF_LoadMemDocument(pdfData, static_cast<int>(size), password);
m_pageCount = FPDF_GetPageCount((FPDF_DOCUMENT)m_documentHandle);
}
QImage PdfiumDocumentWrapperQt::pageAsQImage(size_t pageIndex,int width , int height)
{
if (!m_documentHandle || !m_pageCount) {
qWarning("Failure to generate QImage from invalid or empty PDF document.");
return QImage();
}
if (static_cast<int>(pageIndex) >= m_pageCount) {
qWarning("Failure to generate QImage from PDF data: index out of bounds.");
return QImage();
}
FPDF_PAGE pageData(FPDF_LoadPage((FPDF_DOCUMENT)m_documentHandle, pageIndex));
QImage image(width, height, QImage::Format_ARGB32);
Q_ASSERT(!image.isNull());
image.fill(0xFFFFFFFF);
FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(width, height,
FPDFBitmap_BGRA,
image.scanLine(0), image.bytesPerLine());
Q_ASSERT(bitmap);
FPDF_RenderPageBitmap(bitmap, pageData,
0, 0, width, height,
0, 0);
FPDFBitmap_Destroy(bitmap);
bitmap = nullptr;
FPDF_ClosePage(pageData);
return image;
}
QSizeF PdfiumDocumentWrapperQt::pageSize(size_t index)
{
QSizeF size;
FPDF_GetPageSizeByIndex((FPDF_DOCUMENT)m_documentHandle, index, &size.rwidth(), &size.rheight());
return size;
}
PdfiumDocumentWrapperQt::~PdfiumDocumentWrapperQt()
{
FPDF_CloseDocument((FPDF_DOCUMENT)m_documentHandle);
if (--m_libraryUsers == 0)
FPDF_DestroyLibrary();
}
}
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