cpdf_shadingobject.cpp

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// Copyright 2016 The PDFium Authors
// 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_shadingobject.h"
 
#include <utility>
 
#include "core/fpdfapi/page/cpdf_shadingpattern.h"
 
CPDF_ShadingObject::CPDF_ShadingObject(int32_t content_stream,
                                       RetainPtr<CPDF_ShadingPattern> pattern,
                                       const CFX_Matrix& matrix)
    : CPDF_PageObject(content_stream),
      m_pShading(std::move(pattern)),
      m_Matrix(matrix) {}
 
CPDF_ShadingObject::~CPDF_ShadingObject() = default;
 
CPDF_PageObject::Type CPDF_ShadingObject::GetType() const {
  return Type::kShading;
}
 
void CPDF_ShadingObject::Transform(const CFX_Matrix& matrix) {
  CPDF_ClipPath& clip_path = mutable_clip_path();
  if (clip_path.HasRef()) {
    clip_path.Transform(matrix);
  }
 
  m_Matrix.Concat(matrix);
  if (clip_path.HasRef()) {
    CalcBoundingBox();
  } else {
    SetRect(matrix.TransformRect(GetRect()));
  }
  SetDirty(true);
}
 
bool CPDF_ShadingObject::IsShading() const {
  return true;
}
 
CPDF_ShadingObject* CPDF_ShadingObject::AsShading() {
  return this;
}
 
const CPDF_ShadingObject* CPDF_ShadingObject::AsShading() const {
  return this;
}
 
void CPDF_ShadingObject::CalcBoundingBox() {
  if (!clip_path().HasRef()) {
    return;
  }
  SetRect(clip_path().GetClipBox());
}