1// Copyright 2016 PDFium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7#ifndef CORE_FPDFAPI_PAGE_CPDF_PATTERN_H_
8#define CORE_FPDFAPI_PAGE_CPDF_PATTERN_H_
9
10#include "core/fpdfapi/page/cpdf_countedobject.h"
11#include "core/fxcrt/fx_coordinates.h"
12#include "core/fxcrt/fx_system.h"
13#include "core/fxcrt/unowned_ptr.h"
14
15class CPDF_Document;
16class CPDF_Object;
17class CPDF_ShadingPattern;
18class CPDF_TilingPattern;
19
20class CPDF_Pattern {
21 public:
22  enum PatternType { TILING = 1, SHADING };
23
24  virtual ~CPDF_Pattern();
25
26  virtual CPDF_TilingPattern* AsTilingPattern() = 0;
27  virtual CPDF_ShadingPattern* AsShadingPattern() = 0;
28
29  // All the getters that return pointers return non-NULL pointers.
30  CPDF_Document* document() const { return m_pDocument.Get(); }
31  CPDF_Object* pattern_obj() const { return m_pPatternObj.Get(); }
32  CFX_Matrix* pattern_to_form() { return &m_Pattern2Form; }
33  const CFX_Matrix& parent_matrix() const { return m_ParentMatrix; }
34
35 protected:
36  CPDF_Pattern(CPDF_Document* pDoc,
37               CPDF_Object* pObj,
38               const CFX_Matrix& parentMatrix);
39
40  void SetPatternToFormMatrix();
41
42 private:
43  UnownedPtr<CPDF_Document> const m_pDocument;
44  UnownedPtr<CPDF_Object> const m_pPatternObj;
45  CFX_Matrix m_Pattern2Form;
46  const CFX_Matrix m_ParentMatrix;
47};
48using CPDF_CountedPattern = CPDF_CountedObject<CPDF_Pattern>;
49
50#endif  // CORE_FPDFAPI_PAGE_CPDF_PATTERN_H_
51