Split CPDF_PageObjectHolder off from CPDF_PageObjectList

core/src/fpdfapi/fpdf_render/fpdf_render.cpp

 // 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
 
 #include "core/src/fpdfapi/fpdf_render/render_int.h"
 
 #include "core/include/fpdfapi/fpdf_module.h"
 #include "core/include/fpdfapi/fpdf_render.h"
@@ skipping 219 matching lines @@
         pData->m_StrokeColor.Copy(&pParentData->m_StrokeColor);
       }
     }
   } else {
     m_InitialStates.DefaultStates();
   }
   m_pObjectRenderer.reset();
   m_Transparency = transparency;
   return TRUE;
 }
-void CPDF_RenderStatus::RenderObjectList(const CPDF_PageObjectList* pObjs,
-                                         const CFX_Matrix* pObj2Device) {
+void CPDF_RenderStatus::RenderObjectList(
+    const CPDF_PageObjectHolder* pObjectHolder,
+    const CFX_Matrix* pObj2Device) {
   CFX_FloatRect clip_rect = m_pDevice->GetClipBox();
   CFX_Matrix device2object;
   device2object.SetReverse(*pObj2Device);
   device2object.TransformRect(clip_rect);
   int index = 0;
-  FX_POSITION pos = pObjs->GetFirstObjectPosition();
+  FX_POSITION pos = pObjectHolder->GetPageObjectList()->GetHeadPosition();
   while (pos) {
     index++;
-    CPDF_PageObject* pCurObj = pObjs->GetNextObject(pos);
+    CPDF_PageObject* pCurObj =
+        pObjectHolder->GetPageObjectList()->GetNextObject(pos);
     if (pCurObj == m_pStopObj) {
       m_bStopped = TRUE;
       return;
     }
     if (!pCurObj) {
       continue;
     }
     if (!pCurObj || pCurObj->m_Left > clip_rect.right ||
         pCurObj->m_Right < clip_rect.left ||
         pCurObj->m_Bottom > clip_rect.top ||
@@ skipping 703 matching lines @@
 
 CPDF_RenderContext::CPDF_RenderContext(CPDF_Document* pDoc,
                                        CPDF_PageRenderCache* pPageCache)
     : m_pDocument(pDoc),
       m_pPageResources(nullptr),
       m_pPageCache(pPageCache),
       m_bFirstLayer(TRUE) {}
 
 CPDF_RenderContext::~CPDF_RenderContext() {}
 
-void CPDF_RenderContext::AppendLayer(CPDF_PageObjectList* pObjs,
+void CPDF_RenderContext::AppendLayer(CPDF_PageObjectHolder* pObjectHolder,
                                      const CFX_Matrix* pObject2Device) {
   Layer* pLayer = m_Layers.AddSpace();
-  pLayer->m_pObjectList = pObjs;
+  pLayer->m_pObjectHolder = pObjectHolder;
   if (pObject2Device) {
     pLayer->m_Matrix = *pObject2Device;
   } else {
     pLayer->m_Matrix.SetIdentity();
   }
 }
 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice,
                                 const CPDF_RenderOptions* pOptions,
                                 const CFX_Matrix* pLastMatrix) {
   Render(pDevice, NULL, pOptions, pLastMatrix);
 }
 void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice,
                                 const CPDF_PageObject* pStopObj,
                                 const CPDF_RenderOptions* pOptions,
                                 const CFX_Matrix* pLastMatrix) {
   int count = m_Layers.GetSize();
   for (int j = 0; j < count; j++) {
     pDevice->SaveState();
     Layer* pLayer = m_Layers.GetDataPtr(j);
     if (pLastMatrix) {
       CFX_Matrix FinalMatrix = pLayer->m_Matrix;
       FinalMatrix.Concat(*pLastMatrix);
       CPDF_RenderStatus status;
       status.Initialize(this, pDevice, pLastMatrix, pStopObj, NULL, NULL,
-                        pOptions, pLayer->m_pObjectList->m_Transparency, FALSE,
-                        NULL);
-      status.RenderObjectList(pLayer->m_pObjectList, &FinalMatrix);
+                        pOptions, pLayer->m_pObjectHolder->m_Transparency,
+                        FALSE, NULL);
+      status.RenderObjectList(pLayer->m_pObjectHolder, &FinalMatrix);
       if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
         m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
       }
       if (status.m_bStopped) {
         pDevice->RestoreState();
         break;
       }
     } else {
       CPDF_RenderStatus status;
       status.Initialize(this, pDevice, NULL, pStopObj, NULL, NULL, pOptions,
-                        pLayer->m_pObjectList->m_Transparency, FALSE, NULL);
-      status.RenderObjectList(pLayer->m_pObjectList, &pLayer->m_Matrix);
+                        pLayer->m_pObjectHolder->m_Transparency, FALSE, NULL);
+      status.RenderObjectList(pLayer->m_pObjectHolder, &pLayer->m_Matrix);
       if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
         m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
       }
       if (status.m_bStopped) {
         pDevice->RestoreState();
         break;
       }
     }
     pDevice->RestoreState();
   }
@@ skipping 30 matching lines @@
     if (!m_pCurrentLayer) {
       if (m_LayerIndex >= m_pContext->CountLayers()) {
         m_Status = Done;
         return;
       }
       m_pCurrentLayer = m_pContext->GetLayer(m_LayerIndex);
       m_LastObjectRendered = nullptr;
       m_pRenderStatus.reset(new CPDF_RenderStatus());
       m_pRenderStatus->Initialize(
           m_pContext, m_pDevice, NULL, NULL, NULL, NULL, m_pOptions,
-          m_pCurrentLayer->m_pObjectList->m_Transparency, FALSE, NULL);
+          m_pCurrentLayer->m_pObjectHolder->m_Transparency, FALSE, NULL);
       m_pDevice->SaveState();
       m_ClipRect = m_pDevice->GetClipBox();
       CFX_Matrix device2object;
       device2object.SetReverse(m_pCurrentLayer->m_Matrix);
       device2object.TransformRect(m_ClipRect);
     }
     FX_POSITION pos;
     if (m_LastObjectRendered) {
       pos = m_LastObjectRendered;
-      m_pCurrentLayer->m_pObjectList->GetNextObject(pos);
+      m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->GetNextObject(pos);
     } else {
-      pos = m_pCurrentLayer->m_pObjectList->GetFirstObjectPosition();
+      pos = m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()
+                ->GetHeadPosition();
     }
     int nObjsToGo = kStepLimit;
     while (pos) {
       CPDF_PageObject* pCurObj =
-          m_pCurrentLayer->m_pObjectList->GetObjectAt(pos);
+          m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->GetObjectAt(
+              pos);
       if (pCurObj && pCurObj->m_Left <= m_ClipRect.right &&
           pCurObj->m_Right >= m_ClipRect.left &&
           pCurObj->m_Bottom <= m_ClipRect.top &&
           pCurObj->m_Top >= m_ClipRect.bottom) {
         if (m_pRenderStatus->ContinueSingleObject(
                 pCurObj, &m_pCurrentLayer->m_Matrix, pPause)) {
           return;
         }
         if (pCurObj->m_Type == CPDF_PageObject::IMAGE &&
             m_pRenderStatus->m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) {
           m_pContext->GetPageCache()->CacheOptimization(
               m_pRenderStatus->m_Options.m_dwLimitCacheSize);
         }
         if (pCurObj->m_Type == CPDF_PageObject::FORM ||
             pCurObj->m_Type == CPDF_PageObject::SHADING) {
           nObjsToGo = 0;
         } else {
           --nObjsToGo;
         }
       }
       m_LastObjectRendered = pos;
       if (nObjsToGo == 0) {
         if (pPause && pPause->NeedToPauseNow())
           return;
         nObjsToGo = kStepLimit;
       }
-      m_pCurrentLayer->m_pObjectList->GetNextObject(pos);
+      m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->GetNextObject(pos);
     }
-    if (m_pCurrentLayer->m_pObjectList->IsParsed()) {
+    if (m_pCurrentLayer->m_pObjectHolder->IsParsed()) {
       m_pRenderStatus.reset();
       m_pDevice->RestoreState();
       m_pCurrentLayer = nullptr;
       m_LastObjectRendered = nullptr;
       m_LayerIndex++;
       if (pPause && pPause->NeedToPauseNow()) {
         return;
       }
     } else {
-      m_pCurrentLayer->m_pObjectList->ContinueParse(pPause);
-      if (!m_pCurrentLayer->m_pObjectList->IsParsed())
+      m_pCurrentLayer->m_pObjectHolder->ContinueParse(pPause);
+      if (!m_pCurrentLayer->m_pObjectHolder->IsParsed())
         return;
     }
   }
 }
 
 CPDF_TransferFunc* CPDF_DocRenderData::GetTransferFunc(CPDF_Object* pObj) {
   if (!pObj)
     return nullptr;
 
   auto it = m_TransferFuncMap.find(pObj);
@@ skipping 202 matching lines @@
   for (int i = 0; i < nItems; i++) {
     CPDF_ContentMarkItem& item = pData->GetItem(i);
     if (item.GetName() == "OC" &&
         item.GetParamType() == CPDF_ContentMarkItem::PropertiesDict &&
         !CheckOCGVisible(item.GetParam())) {
       return FALSE;
     }
   }
   return TRUE;
 }