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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
// Copyright 2016 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.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "core/fpdfapi/page/cpdf_pageobjectholder.h"
#include <algorithm>
#include <utility>
#include "core/fpdfapi/page/cpdf_allstates.h"
#include "core/fpdfapi/page/cpdf_contentparser.h"
#include "core/fpdfapi/page/cpdf_pageobject.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
CPDF_PageObjectHolder::CPDF_PageObjectHolder(CPDF_Document* pDoc,
CPDF_Dictionary* pFormDict)
: m_pFormDict(pFormDict),
m_pFormStream(nullptr),
m_pDocument(pDoc),
m_pPageResources(nullptr),
m_pResources(nullptr),
m_iTransparency(0),
m_bBackgroundAlphaNeeded(false),
m_ParseState(CONTENT_NOT_PARSED) {
// TODO(thestig): Check if |m_pFormDict| is never a nullptr and simplify
// callers that checks for that.
}
CPDF_PageObjectHolder::~CPDF_PageObjectHolder() {}
bool CPDF_PageObjectHolder::IsPage() const {
return false;
}
void CPDF_PageObjectHolder::ContinueParse(PauseIndicatorIface* pPause) {
if (!m_pParser) {
m_ParseState = CONTENT_PARSED;
return;
}
if (m_pParser->Continue(pPause))
return;
m_ParseState = CONTENT_PARSED;
if (m_pParser->GetCurStates())
m_LastCTM = m_pParser->GetCurStates()->m_CTM;
m_pParser.reset();
}
void CPDF_PageObjectHolder::AddImageMaskBoundingBox(const CFX_FloatRect& box) {
m_MaskBoundingBoxes.push_back(box);
}
void CPDF_PageObjectHolder::Transform(const CFX_Matrix& matrix) {
for (auto& pObj : m_PageObjectList)
pObj->Transform(matrix);
}
CFX_FloatRect CPDF_PageObjectHolder::CalcBoundingBox() const {
if (m_PageObjectList.empty())
return CFX_FloatRect();
float left = 1000000.0f;
float right = -1000000.0f;
float bottom = 1000000.0f;
float top = -1000000.0f;
for (const auto& pObj : m_PageObjectList) {
left = std::min(left, pObj->m_Left);
right = std::max(right, pObj->m_Right);
bottom = std::min(bottom, pObj->m_Bottom);
top = std::max(top, pObj->m_Top);
}
return CFX_FloatRect(left, bottom, right, top);
}
void CPDF_PageObjectHolder::LoadTransInfo() {
if (!m_pFormDict) {
return;
}
CPDF_Dictionary* pGroup = m_pFormDict->GetDictFor("Group");
if (!pGroup) {
return;
}
if (pGroup->GetStringFor("S") != "Transparency") {
return;
}
m_iTransparency |= PDFTRANS_GROUP;
if (pGroup->GetIntegerFor("I")) {
m_iTransparency |= PDFTRANS_ISOLATED;
}
if (pGroup->GetIntegerFor("K")) {
m_iTransparency |= PDFTRANS_KNOCKOUT;
}
}
size_t CPDF_PageObjectHolder::GetPageObjectCount() const {
return pdfium::CollectionSize<size_t>(m_PageObjectList);
}
CPDF_PageObject* CPDF_PageObjectHolder::GetPageObjectByIndex(
size_t index) const {
return m_PageObjectList.GetPageObjectByIndex(index);
}
void CPDF_PageObjectHolder::AppendPageObject(
std::unique_ptr<CPDF_PageObject> pPageObj) {
m_PageObjectList.push_back(std::move(pPageObj));
}
bool CPDF_PageObjectHolder::RemovePageObject(CPDF_PageObject* pPageObj) {
pdfium::FakeUniquePtr<CPDF_PageObject> p(pPageObj);
auto it =
std::find(std::begin(m_PageObjectList), std::end(m_PageObjectList), p);
if (it == std::end(m_PageObjectList))
return false;
it->release();
m_PageObjectList.erase(it);
return true;
}
bool CPDF_PageObjectHolder::ErasePageObjectAtIndex(size_t index) {
if (index >= m_PageObjectList.size())
return false;
m_PageObjectList.erase(m_PageObjectList.begin() + index);
return true;
}
|
