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wumu

2024-10-09 d93a5a61f94ac4cf795ba4a8970d9eeba037f4c3

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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/cpdf_tilingpattern.h"
 
#include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_object.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_stream.h"
 
CPDF_TilingPattern::CPDF_TilingPattern(CPDF_Document* pDoc,
                                       CPDF_Object* pPatternObj,
                                       const CFX_Matrix& parentMatrix)
    : CPDF_Pattern(TILING, pDoc, pPatternObj, parentMatrix) {
  CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
  m_Pattern2Form = pDict->GetMatrixBy("Matrix");
  m_bColored = pDict->GetIntegerBy("PaintType") == 1;
  m_Pattern2Form.Concat(parentMatrix);
}
 
CPDF_TilingPattern::~CPDF_TilingPattern() {
}
 
CPDF_TilingPattern* CPDF_TilingPattern::AsTilingPattern() {
  return this;
}
 
CPDF_ShadingPattern* CPDF_TilingPattern::AsShadingPattern() {
  return nullptr;
}
 
FX_BOOL CPDF_TilingPattern::Load() {
  if (m_pForm)
    return TRUE;
 
  CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
  if (!pDict)
    return FALSE;
 
  m_bColored = pDict->GetIntegerBy("PaintType") == 1;
  m_XStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumberBy("XStep"));
  m_YStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumberBy("YStep"));
 
  CPDF_Stream* pStream = m_pPatternObj->AsStream();
  if (!pStream)
    return FALSE;
 
  m_pForm.reset(new CPDF_Form(m_pDocument, nullptr, pStream));
  m_pForm->ParseContent(nullptr, &m_ParentMatrix, nullptr);
  m_BBox = pDict->GetRectBy("BBox");
  return TRUE;
}