// 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_pageobjectholder.h"
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#include "core/fpdfapi/fpdf_page/include/cpdf_pageobject.h"
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#include "core/fpdfapi/fpdf_page/pageint.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
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CPDF_PageObjectHolder::CPDF_PageObjectHolder()
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: m_pFormDict(nullptr),
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m_pFormStream(nullptr),
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m_pDocument(nullptr),
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m_pPageResources(nullptr),
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m_pResources(nullptr),
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m_Transparency(0),
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m_bBackgroundAlphaNeeded(FALSE),
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m_bHasImageMask(FALSE),
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m_ParseState(CONTENT_NOT_PARSED) {}
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CPDF_PageObjectHolder::~CPDF_PageObjectHolder() {}
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void CPDF_PageObjectHolder::ContinueParse(IFX_Pause* pPause) {
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if (!m_pParser) {
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return;
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}
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m_pParser->Continue(pPause);
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if (m_pParser->GetStatus() == CPDF_ContentParser::Done) {
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m_ParseState = CONTENT_PARSED;
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m_pParser.reset();
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}
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}
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void CPDF_PageObjectHolder::Transform(const CFX_Matrix& matrix) {
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for (auto& pObj : m_PageObjectList)
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pObj->Transform(matrix);
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}
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CFX_FloatRect CPDF_PageObjectHolder::CalcBoundingBox() const {
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if (m_PageObjectList.empty())
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return CFX_FloatRect(0, 0, 0, 0);
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FX_FLOAT left = 1000000.0f;
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FX_FLOAT right = -1000000.0f;
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FX_FLOAT bottom = 1000000.0f;
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FX_FLOAT top = -1000000.0f;
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for (const auto& pObj : m_PageObjectList) {
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left = std::min(left, pObj->m_Left);
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right = std::max(right, pObj->m_Right);
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bottom = std::min(bottom, pObj->m_Bottom);
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top = std::max(top, pObj->m_Top);
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}
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return CFX_FloatRect(left, bottom, right, top);
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}
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void CPDF_PageObjectHolder::LoadTransInfo() {
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if (!m_pFormDict) {
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return;
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}
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CPDF_Dictionary* pGroup = m_pFormDict->GetDictBy("Group");
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if (!pGroup) {
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return;
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}
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if (pGroup->GetStringBy("S") != "Transparency") {
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return;
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}
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m_Transparency |= PDFTRANS_GROUP;
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if (pGroup->GetIntegerBy("I")) {
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m_Transparency |= PDFTRANS_ISOLATED;
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}
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if (pGroup->GetIntegerBy("K")) {
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m_Transparency |= PDFTRANS_KNOCKOUT;
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}
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}
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