Make StateData private

core/fpdfapi/fpdf_page/cpdf_generalstate.cpp

 // 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
 
 #include "core/fpdfapi/fpdf_page/include/cpdf_generalstate.h"
 
+#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
+#include "core/fpdfapi/fpdf_render/render_int.h"
+
 namespace {
 
 int RI_StringToId(const CFX_ByteString& ri) {
   uint32_t id = ri.GetID();
   if (id == FXBSTR_ID('A', 'b', 's', 'o'))
     return 1;
 
   if (id == FXBSTR_ID('S', 'a', 't', 'u'))
     return 2;
 
   if (id == FXBSTR_ID('P', 'e', 'r', 'c'))
     return 3;
 
   return 0;
 }
 
+int GetBlendTypeInternal(const CFX_ByteString& mode) {
+  switch (mode.GetID()) {
+    case FXBSTR_ID('N', 'o', 'r', 'm'):
+    case FXBSTR_ID('C', 'o', 'm', 'p'):
+      return FXDIB_BLEND_NORMAL;
+    case FXBSTR_ID('M', 'u', 'l', 't'):
+      return FXDIB_BLEND_MULTIPLY;
+    case FXBSTR_ID('S', 'c', 'r', 'e'):
+      return FXDIB_BLEND_SCREEN;
+    case FXBSTR_ID('O', 'v', 'e', 'r'):
+      return FXDIB_BLEND_OVERLAY;
+    case FXBSTR_ID('D', 'a', 'r', 'k'):
+      return FXDIB_BLEND_DARKEN;
+    case FXBSTR_ID('L', 'i', 'g', 'h'):
+      return FXDIB_BLEND_LIGHTEN;
+    case FXBSTR_ID('C', 'o', 'l', 'o'):
+      if (mode.GetLength() == 10)
+        return FXDIB_BLEND_COLORDODGE;
+      if (mode.GetLength() == 9)
+        return FXDIB_BLEND_COLORBURN;
+      return FXDIB_BLEND_COLOR;
+    case FXBSTR_ID('H', 'a', 'r', 'd'):
+      return FXDIB_BLEND_HARDLIGHT;
+    case FXBSTR_ID('S', 'o', 'f', 't'):
+      return FXDIB_BLEND_SOFTLIGHT;
+    case FXBSTR_ID('D', 'i', 'f', 'f'):
+      return FXDIB_BLEND_DIFFERENCE;
+    case FXBSTR_ID('E', 'x', 'c', 'l'):
+      return FXDIB_BLEND_EXCLUSION;
+    case FXBSTR_ID('H', 'u', 'e', 0):
+      return FXDIB_BLEND_HUE;
+    case FXBSTR_ID('S', 'a', 't', 'u'):
+      return FXDIB_BLEND_SATURATION;
+    case FXBSTR_ID('L', 'u', 'm', 'i'):
+      return FXDIB_BLEND_LUMINOSITY;
+  }
+  return FXDIB_BLEND_NORMAL;
+}
+
 }  // namespace
 
 CPDF_GeneralState::CPDF_GeneralState() {}
 
 CPDF_GeneralState::CPDF_GeneralState(const CPDF_GeneralState& that)
     : m_Ref(that.m_Ref) {}
 
 CPDF_GeneralState::~CPDF_GeneralState() {}
 
 void CPDF_GeneralState::SetRenderIntent(const CFX_ByteString& ri) {
   m_Ref.GetPrivateCopy()->m_RenderIntent = RI_StringToId(ri);
 }
 
 int CPDF_GeneralState::GetBlendType() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
+  const StateData* pData = m_Ref.GetObject();
   return pData ? pData->m_BlendType : FXDIB_BLEND_NORMAL;
 }
 
 void CPDF_GeneralState::SetBlendType(int type) {
   m_Ref.GetPrivateCopy()->m_BlendType = type;
 }
 
 FX_FLOAT CPDF_GeneralState::GetFillAlpha() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
+  const StateData* pData = m_Ref.GetObject();
   return pData ? pData->m_FillAlpha : 1.0f;
 }
 
 void CPDF_GeneralState::SetFillAlpha(FX_FLOAT alpha) {
   m_Ref.GetPrivateCopy()->m_FillAlpha = alpha;
 }
 
 FX_FLOAT CPDF_GeneralState::GetStrokeAlpha() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
+  const StateData* pData = m_Ref.GetObject();
   return pData ? pData->m_StrokeAlpha : 1.0f;
 }
 
 void CPDF_GeneralState::SetStrokeAlpha(FX_FLOAT alpha) {
   m_Ref.GetPrivateCopy()->m_StrokeAlpha = alpha;
 }
 
 CPDF_Object* CPDF_GeneralState::GetSoftMask() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
+  const StateData* pData = m_Ref.GetObject();
   return pData ? pData->m_pSoftMask : nullptr;
 }
 
 void CPDF_GeneralState::SetSoftMask(CPDF_Object* pObject) {
   m_Ref.GetPrivateCopy()->m_pSoftMask = pObject;
 }
 
 CPDF_Object* CPDF_GeneralState::GetTR() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
+  const StateData* pData = m_Ref.GetObject();
   return pData ? pData->m_pTR : nullptr;
 }
 
 void CPDF_GeneralState::SetTR(CPDF_Object* pObject) {
   m_Ref.GetPrivateCopy()->m_pTR = pObject;
 }
 
 CPDF_TransferFunc* CPDF_GeneralState::GetTransferFunc() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
+  const StateData* pData = m_Ref.GetObject();
   return pData ? pData->m_pTransferFunc : nullptr;
 }
 
 void CPDF_GeneralState::SetTransferFunc(CPDF_TransferFunc* pFunc) {
   m_Ref.GetPrivateCopy()->m_pTransferFunc = pFunc;
 }
 
-void CPDF_GeneralState::SetBlendMode(const CFX_ByteStringC& mode) {
-  m_Ref.GetPrivateCopy()->SetBlendMode(mode);
+void CPDF_GeneralState::SetBlendMode(const CFX_ByteString& mode) {
+  StateData* pData = m_Ref.GetPrivateCopy();
+  pData->m_BlendMode = mode;
+  pData->m_BlendType = GetBlendTypeInternal(mode);
 }
 
-const FX_FLOAT* CPDF_GeneralState::GetSMaskMatrix() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
-  return pData ? pData->m_SMaskMatrix : nullptr;
+const CFX_Matrix* CPDF_GeneralState::GetSMaskMatrix() const {
+  const StateData* pData = m_Ref.GetObject();
+  return pData ? &pData->m_SMaskMatrix : nullptr;
 }
 
-FX_FLOAT* CPDF_GeneralState::GetMutableSMaskMatrix() {
-  return m_Ref.GetPrivateCopy()->m_SMaskMatrix;
+void CPDF_GeneralState::SetSMaskMatrix(const CFX_Matrix& matrix) {
+  m_Ref.GetPrivateCopy()->m_SMaskMatrix = matrix;
 }
 
 bool CPDF_GeneralState::GetFillOP() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
+  const StateData* pData = m_Ref.GetObject();
   return pData && pData->m_FillOP;
 }
 
 void CPDF_GeneralState::SetFillOP(bool op) {
   m_Ref.GetPrivateCopy()->m_FillOP = op;
 }
 
 void CPDF_GeneralState::SetStrokeOP(bool op) {
   m_Ref.GetPrivateCopy()->m_StrokeOP = op;
 }
 
 bool CPDF_GeneralState::GetStrokeOP() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
+  const StateData* pData = m_Ref.GetObject();
   return pData && pData->m_StrokeOP;
 }
 
 int CPDF_GeneralState::GetOPMode() const {
   return m_Ref.GetObject()->m_OPMode;
 }
 
 void CPDF_GeneralState::SetOPMode(int mode) {
   m_Ref.GetPrivateCopy()->m_OPMode = mode;
 }
@@ skipping 12 matching lines @@
 
 void CPDF_GeneralState::SetFlatness(FX_FLOAT flatness) {
   m_Ref.GetPrivateCopy()->m_Flatness = flatness;
 }
 
 void CPDF_GeneralState::SetSmoothness(FX_FLOAT smoothness) {
   m_Ref.GetPrivateCopy()->m_Smoothness = smoothness;
 }
 
 bool CPDF_GeneralState::GetStrokeAdjust() const {
-  const CPDF_GeneralStateData* pData = m_Ref.GetObject();
+  const StateData* pData = m_Ref.GetObject();
   return pData && pData->m_StrokeAdjust;
 }
 
 void CPDF_GeneralState::SetStrokeAdjust(bool adjust) {
   m_Ref.GetPrivateCopy()->m_StrokeAdjust = adjust;
 }
 
 void CPDF_GeneralState::SetAlphaSource(bool source) {
   m_Ref.GetPrivateCopy()->m_AlphaSource = source;
 }
 
 void CPDF_GeneralState::SetTextKnockout(bool knockout) {
   m_Ref.GetPrivateCopy()->m_TextKnockout = knockout;
 }
 
 void CPDF_GeneralState::SetMatrix(const CFX_Matrix& matrix) {
   m_Ref.GetPrivateCopy()->m_Matrix = matrix;
 }
 
 CFX_Matrix* CPDF_GeneralState::GetMutableMatrix() {
   return &m_Ref.GetPrivateCopy()->m_Matrix;
 }
+
+CPDF_GeneralState::StateData::StateData()
+    : m_BlendMode("Normal"),
+      m_BlendType(0),
+      m_pSoftMask(nullptr),
+      m_StrokeAlpha(1.0),
+      m_FillAlpha(1.0f),
+      m_pTR(nullptr),
+      m_pTransferFunc(nullptr),
+      m_RenderIntent(0),
+      m_StrokeAdjust(false),
+      m_AlphaSource(false),
+      m_TextKnockout(false),
+      m_StrokeOP(false),
+      m_FillOP(false),
+      m_OPMode(0),
+      m_pBG(nullptr),
+      m_pUCR(nullptr),
+      m_pHT(nullptr),
+      m_Flatness(1.0f),
+      m_Smoothness(0.0f) {
+  m_SMaskMatrix.SetIdentity();
+  m_Matrix.SetIdentity();
+}
+
+CPDF_GeneralState::StateData::StateData(const StateData& that)
+    : m_BlendMode(that.m_BlendMode),
+      m_BlendType(that.m_BlendType),
+      m_pSoftMask(that.m_pSoftMask),
+      m_StrokeAlpha(that.m_StrokeAlpha),
+      m_FillAlpha(that.m_FillAlpha),
+      m_pTR(that.m_pTR),
+      m_pTransferFunc(that.m_pTransferFunc),
+      m_RenderIntent(that.m_RenderIntent),
+      m_StrokeAdjust(that.m_StrokeAdjust),
+      m_AlphaSource(that.m_AlphaSource),
+      m_TextKnockout(that.m_TextKnockout),
+      m_StrokeOP(that.m_StrokeOP),
+      m_FillOP(that.m_FillOP),
+      m_OPMode(that.m_OPMode),
+      m_pBG(that.m_pBG),
+      m_pUCR(that.m_pUCR),
+      m_pHT(that.m_pHT),
+      m_Flatness(that.m_Flatness),
+      m_Smoothness(that.m_Smoothness) {
+  m_Matrix = that.m_Matrix;
+  m_SMaskMatrix = that.m_SMaskMatrix;
+
+  if (that.m_pTransferFunc && that.m_pTransferFunc->m_pPDFDoc) {
+    CPDF_DocRenderData* pDocCache =
+        that.m_pTransferFunc->m_pPDFDoc->GetRenderData();
+    if (pDocCache)
+      m_pTransferFunc = pDocCache->GetTransferFunc(m_pTR);
+  }
+}
+
+CPDF_GeneralState::StateData::~StateData() {
+  if (m_pTransferFunc && m_pTransferFunc->m_pPDFDoc) {
+    CPDF_DocRenderData* pDocCache = m_pTransferFunc->m_pPDFDoc->GetRenderData();
+    if (pDocCache)
+      pDocCache->ReleaseTransferFunc(m_pTR);
+  }
+}