// Copyright 2016 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "core/fpdfapi/fpdf_page/include/cpdf_clippath.h"
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#include <utility>
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#include "core/fpdfapi/fpdf_page/include/cpdf_textobject.h"
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#include "third_party/base/stl_util.h"
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#define FPDF_CLIPPATH_MAX_TEXTS 1024
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uint32_t CPDF_ClipPath::GetPathCount() const {
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return pdfium::CollectionSize<uint32_t>(m_pObject->m_PathAndTypeList);
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}
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CPDF_Path CPDF_ClipPath::GetPath(size_t i) const {
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return m_pObject->m_PathAndTypeList[i].first;
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}
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uint8_t CPDF_ClipPath::GetClipType(size_t i) const {
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return m_pObject->m_PathAndTypeList[i].second;
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}
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uint32_t CPDF_ClipPath::GetTextCount() const {
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return pdfium::CollectionSize<uint32_t>(m_pObject->m_TextList);
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}
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CPDF_TextObject* CPDF_ClipPath::GetText(size_t i) const {
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return m_pObject->m_TextList[i].get();
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}
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CFX_FloatRect CPDF_ClipPath::GetClipBox() const {
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CFX_FloatRect rect;
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FX_BOOL bStarted = FALSE;
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int count = GetPathCount();
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if (count) {
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rect = GetPath(0).GetBoundingBox();
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for (int i = 1; i < count; i++) {
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CFX_FloatRect path_rect = GetPath(i).GetBoundingBox();
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rect.Intersect(path_rect);
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}
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bStarted = TRUE;
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}
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count = GetTextCount();
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if (count) {
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CFX_FloatRect layer_rect;
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FX_BOOL bLayerStarted = FALSE;
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for (int i = 0; i < count; i++) {
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CPDF_TextObject* pTextObj = GetText(i);
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if (!pTextObj) {
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if (!bStarted) {
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rect = layer_rect;
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bStarted = TRUE;
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} else {
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rect.Intersect(layer_rect);
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}
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bLayerStarted = FALSE;
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} else {
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if (!bLayerStarted) {
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layer_rect = CFX_FloatRect(pTextObj->GetBBox(nullptr));
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bLayerStarted = TRUE;
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} else {
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layer_rect.Union(CFX_FloatRect(pTextObj->GetBBox(nullptr)));
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}
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}
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}
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}
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return rect;
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}
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void CPDF_ClipPath::AppendPath(CPDF_Path path, uint8_t type, bool bAutoMerge) {
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CPDF_ClipPathData* pData = GetModify();
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if (!pData->m_PathAndTypeList.empty() && bAutoMerge) {
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const CPDF_Path& old_path = pData->m_PathAndTypeList.back().first;
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if (old_path.IsRect()) {
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CFX_FloatRect old_rect(old_path.GetPointX(0), old_path.GetPointY(0),
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old_path.GetPointX(2), old_path.GetPointY(2));
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CFX_FloatRect new_rect = path.GetBoundingBox();
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if (old_rect.Contains(new_rect))
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pData->m_PathAndTypeList.pop_back();
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}
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}
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pData->m_PathAndTypeList.push_back(std::make_pair(path, type));
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}
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void CPDF_ClipPath::AppendTexts(
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std::vector<std::unique_ptr<CPDF_TextObject>>* pTexts) {
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CPDF_ClipPathData* pData = GetModify();
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if (pData->m_TextList.size() + pTexts->size() <= FPDF_CLIPPATH_MAX_TEXTS) {
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for (size_t i = 0; i < pTexts->size(); i++)
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pData->m_TextList.push_back(std::move((*pTexts)[i]));
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pData->m_TextList.push_back(std::unique_ptr<CPDF_TextObject>());
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}
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pTexts->clear();
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}
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void CPDF_ClipPath::Transform(const CFX_Matrix& matrix) {
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CPDF_ClipPathData* pData = GetModify();
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for (auto& obj : pData->m_PathAndTypeList)
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obj.first.Transform(&matrix);
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for (auto& text : pData->m_TextList) {
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if (text)
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text->Transform(matrix);
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}
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}
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