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-rw-r--r--core/fpdfapi/page/cpdf_clippath.cpp130
1 files changed, 130 insertions, 0 deletions
diff --git a/core/fpdfapi/page/cpdf_clippath.cpp b/core/fpdfapi/page/cpdf_clippath.cpp
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index 0000000000..8c268a1b5e
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+++ b/core/fpdfapi/page/cpdf_clippath.cpp
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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/page/cpdf_clippath.h"
+
+#include <utility>
+
+#include "core/fpdfapi/page/cpdf_path.h"
+#include "core/fpdfapi/page/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() {}