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// 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/fpdf_page/include/cpdf_clippath.h"
#include <utility>
#include "core/fpdfapi/fpdf_page/include/cpdf_path.h"
#include "core/fpdfapi/fpdf_page/include/cpdf_textobject.h"
#include "third_party/base/stl_util.h"
#define FPDF_CLIPPATH_MAX_TEXTS 1024
CPDF_ClipPath::CPDF_ClipPath() {}
CPDF_ClipPath::CPDF_ClipPath(const CPDF_ClipPath& that) : m_Ref(that.m_Ref) {}
CPDF_ClipPath::~CPDF_ClipPath() {}
uint32_t CPDF_ClipPath::GetPathCount() const {
return pdfium::CollectionSize<uint32_t>(m_Ref.GetObject()->m_PathAndTypeList);
}
CPDF_Path CPDF_ClipPath::GetPath(size_t i) const {
return m_Ref.GetObject()->m_PathAndTypeList[i].first;
}
uint8_t CPDF_ClipPath::GetClipType(size_t i) const {
return m_Ref.GetObject()->m_PathAndTypeList[i].second;
}
uint32_t CPDF_ClipPath::GetTextCount() const {
return pdfium::CollectionSize<uint32_t>(m_Ref.GetObject()->m_TextList);
}
CPDF_TextObject* CPDF_ClipPath::GetText(size_t i) const {
return m_Ref.GetObject()->m_TextList[i].get();
}
CFX_FloatRect CPDF_ClipPath::GetClipBox() const {
CFX_FloatRect rect;
FX_BOOL bStarted = FALSE;
int count = GetPathCount();
if (count) {
rect = GetPath(0).GetBoundingBox();
for (int i = 1; i < count; i++) {
CFX_FloatRect path_rect = GetPath(i).GetBoundingBox();
rect.Intersect(path_rect);
}
bStarted = TRUE;
}
count = GetTextCount();
if (count) {
CFX_FloatRect layer_rect;
FX_BOOL bLayerStarted = FALSE;
for (int i = 0; i < count; i++) {
CPDF_TextObject* pTextObj = GetText(i);
if (!pTextObj) {
if (!bStarted) {
rect = layer_rect;
bStarted = TRUE;
} else {
rect.Intersect(layer_rect);
}
bLayerStarted = FALSE;
} else {
if (!bLayerStarted) {
layer_rect = CFX_FloatRect(pTextObj->GetBBox(nullptr));
bLayerStarted = TRUE;
} else {
layer_rect.Union(CFX_FloatRect(pTextObj->GetBBox(nullptr)));
}
}
}
}
return rect;
}
void CPDF_ClipPath::AppendPath(CPDF_Path path, uint8_t type, bool bAutoMerge) {
PathData* pData = m_Ref.GetPrivateCopy();
if (!pData->m_PathAndTypeList.empty() && bAutoMerge) {
const CPDF_Path& old_path = pData->m_PathAndTypeList.back().first;
if (old_path.IsRect()) {
CFX_FloatRect old_rect(old_path.GetPointX(0), old_path.GetPointY(0),
old_path.GetPointX(2), old_path.GetPointY(2));
CFX_FloatRect new_rect = path.GetBoundingBox();
if (old_rect.Contains(new_rect))
pData->m_PathAndTypeList.pop_back();
}
}
pData->m_PathAndTypeList.push_back(std::make_pair(path, type));
}
void CPDF_ClipPath::AppendTexts(
std::vector<std::unique_ptr<CPDF_TextObject>>* pTexts) {
PathData* pData = m_Ref.GetPrivateCopy();
if (pData->m_TextList.size() + pTexts->size() <= FPDF_CLIPPATH_MAX_TEXTS) {
for (size_t i = 0; i < pTexts->size(); i++)
pData->m_TextList.push_back(std::move((*pTexts)[i]));
pData->m_TextList.push_back(std::unique_ptr<CPDF_TextObject>());
}
pTexts->clear();
}
void CPDF_ClipPath::Transform(const CFX_Matrix& matrix) {
PathData* pData = m_Ref.GetPrivateCopy();
for (auto& obj : pData->m_PathAndTypeList)
obj.first.Transform(&matrix);
for (auto& text : pData->m_TextList) {
if (text)
text->Transform(matrix);
}
}
CPDF_ClipPath::PathData::PathData() {}
CPDF_ClipPath::PathData::PathData(const PathData& that) {
m_PathAndTypeList = that.m_PathAndTypeList;
m_TextList.resize(that.m_TextList.size());
for (size_t i = 0; i < that.m_TextList.size(); ++i) {
if (that.m_TextList[i])
m_TextList[i].reset(that.m_TextList[i]->Clone());
}
}
CPDF_ClipPath::PathData::~PathData() {}
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