blob: b49b403a75b0f0547b15449e6d42e03cbfe55bd5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
// Copyright 2018 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CORE_FPDFAPI_EDIT_CPDF_PAGECONTENTMANAGER_H_
#define CORE_FPDFAPI_EDIT_CPDF_PAGECONTENTMANAGER_H_
#include <set>
#include <sstream>
#include "core/fxcrt/unowned_ptr.h"
class CPDF_Array;
class CPDF_Document;
class CPDF_Object;
class CPDF_Stream;
class CPDF_PageObjectHolder;
class CPDF_PageContentManager {
public:
explicit CPDF_PageContentManager(const CPDF_PageObjectHolder* pObjHolder);
~CPDF_PageContentManager();
// Gets the Content stream at a given index. If Contents is a single stream
// rather than an array, it is considered to be at index 0.
CPDF_Stream* GetStreamByIndex(size_t stream_index);
// Adds a new Content stream. Its index in the array will be returned, or 0
// if Contents is not an array, but only a single stream.
size_t AddStream(std::ostringstream* buf);
// Schedule the removal of the Content stream at a given index. It will be
// removed when ExecuteScheduledRemovals() is called.
void ScheduleRemoveStreamByIndex(size_t stream_index);
// Remove all Content streams for which ScheduleRemoveStreamByIndex() was
// called. Update the content stream of all page objects with the shifted
// indexes.
void ExecuteScheduledRemovals();
private:
UnownedPtr<const CPDF_PageObjectHolder> const obj_holder_;
UnownedPtr<CPDF_Document> const doc_;
UnownedPtr<CPDF_Array> contents_array_;
UnownedPtr<CPDF_Stream> contents_stream_;
std::set<size_t> streams_to_remove_;
};
#endif // CORE_FPDFAPI_EDIT_CPDF_PAGECONTENTMANAGER_H_
|
