core/fpdfapi/fpdf_page/include/cpdf_colorspace.h

// 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

#ifndef CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_COLORSPACE_H_
#define CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_COLORSPACE_H_

#include "core/fxcrt/include/fx_string.h"
#include "core/fxcrt/include/fx_system.h"

#define PDFCS_DEVICEGRAY 1
#define PDFCS_DEVICERGB 2
#define PDFCS_DEVICECMYK 3
#define PDFCS_CALGRAY 4
#define PDFCS_CALRGB 5
#define PDFCS_LAB 6
#define PDFCS_ICCBASED 7
#define PDFCS_SEPARATION 8
#define PDFCS_DEVICEN 9
#define PDFCS_INDEXED 10
#define PDFCS_PATTERN 11

class CPDF_Array;
class CPDF_Document;
class CPDF_Object;

class CPDF_ColorSpace {
 public:
  static CPDF_ColorSpace* GetStockCS(int Family);
  static CPDF_ColorSpace* Load(CPDF_Document* pDoc, CPDF_Object* pCSObj);
  static CPDF_ColorSpace* ColorspaceFromName(const CFX_ByteString& name);

  void ReleaseCS();

  int GetBufSize() const;
  FX_FLOAT* CreateBuf();
  void GetDefaultColor(FX_FLOAT* buf) const;
  uint32_t CountComponents() const { return m_nComponents; }
  int GetFamily() const { return m_Family; }
  virtual void GetDefaultValue(int iComponent,
                               FX_FLOAT& value,
                               FX_FLOAT& min,
                               FX_FLOAT& max) const {
    value = 0;
    min = 0;
    max = 1.0f;
  }

  FX_BOOL sRGB() const;
  virtual FX_BOOL GetRGB(FX_FLOAT* pBuf,
                         FX_FLOAT& R,
                         FX_FLOAT& G,
                         FX_FLOAT& B) const = 0;
  virtual FX_BOOL SetRGB(FX_FLOAT* pBuf,
                         FX_FLOAT R,
                         FX_FLOAT G,
                         FX_FLOAT B) const {
    return FALSE;
  }

  FX_BOOL GetCMYK(FX_FLOAT* pBuf,
                  FX_FLOAT& c,
                  FX_FLOAT& m,
                  FX_FLOAT& y,
                  FX_FLOAT& k) const;
  FX_BOOL SetCMYK(FX_FLOAT* pBuf,
                  FX_FLOAT c,
                  FX_FLOAT m,
                  FX_FLOAT y,
                  FX_FLOAT k) const;

  virtual void TranslateImageLine(uint8_t* dest_buf,
                                  const uint8_t* src_buf,
                                  int pixels,
                                  int image_width,
                                  int image_height,
                                  FX_BOOL bTransMask = FALSE) const;

  CPDF_Array*& GetArray() { return m_pArray; }
  int GetMaxIndex() const;
  virtual CPDF_ColorSpace* GetBaseCS() const { return NULL; }

  virtual void EnableStdConversion(FX_BOOL bEnabled);

  CPDF_Document* const m_pDocument;

 protected:
  CPDF_ColorSpace(CPDF_Document* pDoc, int family, uint32_t nComponents)
      : m_pDocument(pDoc),
        m_Family(family),
        m_nComponents(nComponents),
        m_pArray(nullptr),
        m_dwStdConversion(0) {}
  virtual ~CPDF_ColorSpace() {}

  virtual FX_BOOL v_Load(CPDF_Document* pDoc, CPDF_Array* pArray) {
    return TRUE;
  }
  virtual FX_BOOL v_GetCMYK(FX_FLOAT* pBuf,
                            FX_FLOAT& c,
                            FX_FLOAT& m,
                            FX_FLOAT& y,
                            FX_FLOAT& k) const {
    return FALSE;
  }
  virtual FX_BOOL v_SetCMYK(FX_FLOAT* pBuf,
                            FX_FLOAT c,
                            FX_FLOAT m,
                            FX_FLOAT y,
                            FX_FLOAT k) const {
    return FALSE;
  }

  int m_Family;
  uint32_t m_nComponents;
  CPDF_Array* m_pArray;
  uint32_t m_dwStdConversion;
};

#endif  // CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_COLORSPACE_H_