| // 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_clippath.h" |
| |
| #include <utility> |
| |
| #include "core/fpdfapi/page/cpdf_path.h" |
| #include "core/fpdfapi/page/cpdf_textobject.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() {} |
| |
| size_t CPDF_ClipPath::GetPathCount() const { |
| return m_Ref.GetObject()->m_PathAndTypeList.size(); |
| } |
| |
| 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; |
| } |
| |
| size_t CPDF_ClipPath::GetTextCount() const { |
| return m_Ref.GetObject()->m_TextList.size(); |
| } |
| |
| 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; |
| bool bStarted = false; |
| if (GetPathCount() > 0) { |
| rect = GetPath(0).GetBoundingBox(); |
| for (size_t i = 1; i < GetPathCount(); ++i) { |
| CFX_FloatRect path_rect = GetPath(i).GetBoundingBox(); |
| rect.Intersect(path_rect); |
| } |
| bStarted = true; |
| } |
| |
| CFX_FloatRect layer_rect; |
| bool bLayerStarted = false; |
| for (size_t i = 0; i < GetTextCount(); ++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_PointF point0 = old_path.GetPoint(0); |
| CFX_PointF point2 = old_path.GetPoint(2); |
| CFX_FloatRect old_rect(point0.x, point0.y, point2.x, point2.y); |
| 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(nullptr); |
| } |
| 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] = that.m_TextList[i]->Clone(); |
| } |
| } |
| |
| CPDF_ClipPath::PathData::~PathData() {} |