support gradients and stroke+fill

core/fpdfapi/fpdf_page/pageint.h

 // Copyright 2014 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_PAGEINT_H_
 #define CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 
 #include <map>
@@ skipping 365 matching lines @@
 };
 
 class CPDF_Function {
  public:
   static CPDF_Function* Load(CPDF_Object* pFuncObj);
   virtual ~CPDF_Function();
   FX_BOOL Call(FX_FLOAT* inputs,
                int ninputs,
                FX_FLOAT* results,
                int& nresults) const;
-  int CountInputs() { return m_nInputs; }
-  int CountOutputs() { return m_nOutputs; }
+  int CountInputs() const { return m_nInputs; }
+  int CountOutputs() const { return m_nOutputs; }
+  FX_FLOAT GetDomain(int i) const { return m_pDomains[i]; }
+  int GetType() const { return m_nType; }
 
  protected:
   CPDF_Function();

[Tom Sepez, 2016/03/24 18:07:07]

nit: probably should take the type as a parameter, then the various sub-class
ctors don't have to muck with m_nType.

[caryclark, 2016/03/25 20:47:56]

Done.

   int m_nInputs, m_nOutputs;

[Tom Sepez, 2016/03/24 18:07:07]

nit: one per line, also blank line between methods and members.

[caryclark, 2016/03/25 20:47:56]

Done.

   FX_FLOAT* m_pDomains;
   FX_FLOAT* m_pRanges;
+  int m_nType;

[Tom Sepez, 2016/03/24 18:07:08]

nit: I'd put this as the first member.

[caryclark, 2016/03/25 20:47:55]

Done.

   FX_BOOL Init(CPDF_Object* pObj);

[Tom Sepez, 2016/03/24 18:07:07]

nit: move these to line 393.

[caryclark, 2016/03/25 20:47:55]

Done.

   virtual FX_BOOL v_Init(CPDF_Object* pObj) = 0;
   virtual FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const = 0;
 };
+
+class CPDF_ExpIntFunc : public CPDF_Function {
+ public:
+  CPDF_ExpIntFunc();
+  ~CPDF_ExpIntFunc() override;
+
+  // CPDF_Function
+  FX_BOOL v_Init(CPDF_Object* pObj) override;
+  FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const override;
+
+  FX_FLOAT m_Exponent;
+  FX_FLOAT* m_pBeginValues;
+  FX_FLOAT* m_pEndValues;
+  int m_nOrigOutputs;

[Tom Sepez, 2016/03/24 18:07:08]

nit: may save 8 bytes per instance on 64 bits if this came before m_Exponent

[caryclark, 2016/03/25 20:47:55]

Done.

+};
+
+class CPDF_StitchFunc : public CPDF_Function {
+ public:
+  CPDF_StitchFunc();
+  ~CPDF_StitchFunc() override;
+
+  // CPDF_Function
+  FX_BOOL v_Init(CPDF_Object* pObj) override;
+  FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const override;
+
+  std::vector<CPDF_Function*> m_pSubFunctions;
+  FX_FLOAT* m_pBounds;
+  FX_FLOAT* m_pEncode;
+
+  static const int kRequiredNumInputs = 1;
+};
+
 class CPDF_IccProfile {
  public:
   CPDF_IccProfile(const uint8_t* pData, FX_DWORD dwSize);
   ~CPDF_IccProfile();
   FX_DWORD GetComponents() const { return m_nSrcComponents; }
   FX_BOOL m_bsRGB;
   void* m_pTransform;
 
  private:
   FX_DWORD m_nSrcComponents;
@@ skipping 50 matching lines @@
   CPDF_Pattern* m_pPattern;
   CPDF_CountedPattern* m_pCountedPattern;
   int m_nComps;
   FX_FLOAT m_Comps[MAX_PATTERN_COLORCOMPS];
 };
 
 void PDF_ReplaceAbbr(CPDF_Object* pObj);
 bool IsPathOperator(const uint8_t* buf, size_t len);
 
 #endif  // CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_