support gradients and stroke+fill

core/fpdfapi/fpdf_page/pageint.h

Index: core/fpdfapi/fpdf_page/pageint.h
diff --git a/core/fpdfapi/fpdf_page/pageint.h b/core/fpdfapi/fpdf_page/pageint.h
index d254477dc337fa094c0c86e5f8f4369fcdc0b0f3..8592616dfa65eeaa5fd8261cea5f32b503863afa 100644
--- a/core/fpdfapi/fpdf_page/pageint.h
+++ b/core/fpdfapi/fpdf_page/pageint.h
@@ -383,18 +383,53 @@ class CPDF_Function {
                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);