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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.
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/observed_ptr.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxcrt/unowned_ptr.h"
class CPDF_Document;
class CPDF_Object;
class CPDF_ShadingPattern;
class CPDF_TilingPattern;
class CPDF_Pattern : public Retainable, public Observable {
// Values used in PDFs. Do not change.
enum PatternType { kTiling = 1, kShading = 2 };
~CPDF_Pattern() override;
virtual CPDF_TilingPattern* AsTilingPattern();
virtual CPDF_ShadingPattern* AsShadingPattern();
// All the getters that return pointers return non-NULL pointers.
CPDF_Document* document() const { return m_pDocument.Get(); }
CPDF_Object* pattern_obj() const { return m_pPatternObj.Get(); }
const CFX_Matrix& pattern_to_form() const { return m_Pattern2Form; }
const CFX_Matrix& parent_matrix() const { return m_ParentMatrix; }
CPDF_Pattern(CPDF_Document* pDoc,
CPDF_Object* pObj,
const CFX_Matrix& parentMatrix);
void SetPatternToFormMatrix();
UnownedPtr<CPDF_Document> const m_pDocument;
RetainPtr<CPDF_Object> const m_pPatternObj;
CFX_Matrix m_Pattern2Form;
const CFX_Matrix m_ParentMatrix;