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// Copyright (C) 2020 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
#ifndef QPDFDOCUMENT_P_H
#define QPDFDOCUMENT_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qpdfdocument.h"
#include "third_party/pdfium/public/fpdfview.h"
#include "third_party/pdfium/public/fpdf_dataavail.h"
#include <QtCore/qbuffer.h>
#include <QtCore/qmutex.h>
#include <QtCore/qpointer.h>
#include <QtNetwork/qnetworkreply.h>
#include <mutex>
QT_BEGIN_NAMESPACE
class QPdfMutexLocker : public std::unique_lock<QRecursiveMutex>
{
public:
QPdfMutexLocker();
};
class QPdfPageModel;
class Q_PDF_PRIVATE_EXPORT QPdfDocumentPrivate: public FPDF_FILEACCESS, public FX_FILEAVAIL, public FX_DOWNLOADHINTS
{
public:
QPdfDocumentPrivate();
~QPdfDocumentPrivate();
QPdfDocument *q;
QPdfPageModel *pageModel = nullptr;
FPDF_AVAIL avail;
FPDF_DOCUMENT doc;
bool loadComplete;
QPointer<QIODevice> device;
QScopedPointer<QIODevice> ownDevice;
QBuffer asyncBuffer;
QPointer<QIODevice> sequentialSourceDevice;
QByteArray password;
QPdfDocument::Status status;
QPdfDocument::Error lastError;
int pageCount;
void clear();
void load(QIODevice *device, bool ownDevice);
void loadAsync(QIODevice *device);
void _q_tryLoadingWithSizeFromContentHeader();
void initiateAsyncLoadWithTotalSizeKnown(quint64 totalSize);
void _q_copyFromSequentialSourceDevice();
void tryLoadDocument();
void checkComplete();
bool checkPageComplete(int page);
void setStatus(QPdfDocument::Status status);
static FPDF_BOOL fpdf_IsDataAvail(struct _FX_FILEAVAIL* pThis, size_t offset, size_t size);
static int fpdf_GetBlock(void* param, unsigned long position, unsigned char* pBuf, unsigned long size);
static void fpdf_AddSegment(struct _FX_DOWNLOADHINTS* pThis, size_t offset, size_t size);
void updateLastError();
QString getText(FPDF_TEXTPAGE textPage, int startIndex, int count);
QPointF getCharPosition(FPDF_TEXTPAGE textPage, double pageHeight, int charIndex);
QRectF getCharBox(FPDF_TEXTPAGE textPage, double pageHeight, int charIndex);
struct TextPosition {
QPointF position;
qreal height = 0;
int charIndex = -1;
};
TextPosition hitTest(int page, QPointF position);
};
QT_END_NAMESPACE
#endif // QPDFDOCUMENT_P_H
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