1 files changed, 98 insertions, 0 deletions
diff --git a/core/fpdfapi/render/cpdf_rendercontext.cpp b/core/fpdfapi/render/cpdf_rendercontext.cpp
new file mode 100644
index 0000000000..2efdb81f8a
--- /dev/null
+++ b/core/fpdfapi/render/cpdf_rendercontext.cpp
@@ -0,0 +1,98 @@
+// 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/render/cpdf_rendercontext.h"
+
+#include "core/fpdfapi/page/cpdf_page.h"
+#include "core/fpdfapi/page/cpdf_pageobject.h"
+#include "core/fpdfapi/page/cpdf_pageobjectholder.h"
+#include "core/fpdfapi/parser/cpdf_dictionary.h"
+#include "core/fpdfapi/parser/cpdf_document.h"
+#include "core/fpdfapi/render/cpdf_pagerendercache.h"
+#include "core/fpdfapi/render/cpdf_progressiverenderer.h"
+#include "core/fpdfapi/render/cpdf_renderoptions.h"
+#include "core/fpdfapi/render/cpdf_renderstatus.h"
+#include "core/fpdfapi/render/cpdf_textrenderer.h"
+#include "core/fxge/cfx_renderdevice.h"
+#include "core/fxge/fx_dib.h"
+
+CPDF_RenderContext::CPDF_RenderContext(CPDF_Page* pPage)
+    : m_pDocument(pPage->m_pDocument),
+      m_pPageResources(pPage->m_pPageResources),
+      m_pPageCache(pPage->GetRenderCache()) {}
+
+CPDF_RenderContext::CPDF_RenderContext(CPDF_Document* pDoc,
+                                       CPDF_PageRenderCache* pPageCache)
+    : m_pDocument(pDoc), m_pPageResources(nullptr), m_pPageCache(pPageCache) {}
+
+CPDF_RenderContext::~CPDF_RenderContext() {}
+
+void CPDF_RenderContext::GetBackground(CFX_DIBitmap* pBuffer,
+                                       const CPDF_PageObject* pObj,
+                                       const CPDF_RenderOptions* pOptions,
+                                       CFX_Matrix* pFinalMatrix) {
+  CFX_FxgeDevice device;
+  device.Attach(pBuffer, false, nullptr, false);
+
+  FX_RECT rect(0, 0, device.GetWidth(), device.GetHeight());
+  device.FillRect(&rect, 0xffffffff);
+  Render(&device, pObj, pOptions, pFinalMatrix);
+}
+
+void CPDF_RenderContext::AppendLayer(CPDF_PageObjectHolder* pObjectHolder,
+                                     const CFX_Matrix* pObject2Device) {
+  Layer* pLayer = m_Layers.AddSpace();
+  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, nullptr, 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, nullptr, nullptr,
+                        pOptions, pLayer->m_pObjectHolder->m_Transparency,
+                        false, nullptr);
+      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(false);
+        break;
+      }
+    } else {
+      CPDF_RenderStatus status;
+      status.Initialize(this, pDevice, nullptr, pStopObj, nullptr, nullptr,
+                        pOptions, pLayer->m_pObjectHolder->m_Transparency,
+                        false, nullptr);
+      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(false);
+        break;
+      }
+    }
+    pDevice->RestoreState(false);
+  }
+}