Clean up CPDF_Page.

core/fpdfapi/fpdf_render/fpdf_render_image.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/fpdfapi/fpdf_render/render_int.h"
 
 #include <utility>
 #include <vector>
 
-#include "core/fpdfapi/fpdf_page/cpdf_parseoptions.h"
 #include "core/fpdfapi/fpdf_page/cpdf_shadingpattern.h"
 #include "core/fpdfapi/fpdf_page/cpdf_tilingpattern.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_image.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_imageobject.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
 #include "core/fpdfapi/fpdf_page/pageint.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
@@ skipping 504 matching lines @@
     return TRUE;
   }
   bitmap_device1.GetBitmap()->Clear(0xffffff);
   {
     CPDF_RenderStatus bitmap_render;
     bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1, NULL,
                              NULL, NULL, NULL, &m_pRenderStatus->m_Options, 0,
                              m_pRenderStatus->m_bDropObjects, NULL, TRUE);
     CFX_Matrix patternDevice = *pObj2Device;
     patternDevice.Translate((FX_FLOAT)-rect.left, (FX_FLOAT)-rect.top);
-    if (m_pPattern->m_PatternType == CPDF_Pattern::TILING) {
-      bitmap_render.DrawTilingPattern(
-          static_cast<CPDF_TilingPattern*>(m_pPattern), m_pImageObject,
-          &patternDevice, FALSE);
-    } else {
-      bitmap_render.DrawShadingPattern(
-          static_cast<CPDF_ShadingPattern*>(m_pPattern), m_pImageObject,
-          &patternDevice, FALSE);
+    if (CPDF_TilingPattern* pTilingPattern = m_pPattern->AsTilingPattern()) {
+      bitmap_render.DrawTilingPattern(pTilingPattern, m_pImageObject,
+                                      &patternDevice, FALSE);
+    } else if (CPDF_ShadingPattern* pShadingPattern =
+                   m_pPattern->AsShadingPattern()) {
+      bitmap_render.DrawShadingPattern(pShadingPattern, m_pImageObject,
+                                       &patternDevice, FALSE);
     }
   }
   {
     CFX_FxgeDevice bitmap_device2;
     if (!bitmap_device2.Create(rect.Width(), rect.Height(), FXDIB_8bppRgb)) {
       return TRUE;
     }
     bitmap_device2.GetBitmap()->Clear(0);
     CPDF_RenderStatus bitmap_render;
     bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2, NULL,
@@ skipping 332 matching lines @@
   std::unique_ptr<CPDF_Function> pFunc;
   CPDF_Object* pFuncObj = pSMaskDict->GetDirectObjectBy("TR");
   if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream()))
     pFunc.reset(CPDF_Function::Load(pFuncObj));
 
   CFX_Matrix matrix = *pMatrix;
   matrix.TranslateI(-pClipRect->left, -pClipRect->top);
 
   CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(),
                  pGroup);
-  form.ParseContent(NULL, NULL, NULL, NULL);
+  form.ParseContent(nullptr, nullptr, nullptr);
 
   CFX_FxgeDevice bitmap_device;
   FX_BOOL bLuminosity = pSMaskDict->GetStringBy("S") != "Alpha";
   int width = pClipRect->right - pClipRect->left;
   int height = pClipRect->bottom - pClipRect->top;
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
   if (!bitmap_device.Create(width, height,
                             bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask)) {
     return NULL;
   }
@@ skipping 90 matching lines @@
   } else if (pFunc) {
     int size = dest_pitch * height;
     for (int i = 0; i < size; i++) {
       dest_buf[i] = transfers[src_buf[i]];
     }
   } else {
     FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height);
   }
   return pMask.release();
 }