core/include/fdpfapi cleanup Part I.

core/fpdfapi/fpdf_render/include/cpdf_rendercontext.h

+// 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
+
+#ifndef CORE_FPDFAPI_FPDF_RENDER_INCLUDE_CPDF_RENDERCONTEXT_H_
+#define CORE_FPDFAPI_FPDF_RENDER_INCLUDE_CPDF_RENDERCONTEXT_H_
+
+#include "core/include/fxcrt/fx_basic.h"
+#include "core/include/fxcrt/fx_coordinates.h"
+
+class CPDF_Dictionary;
+class CPDF_Document;
+class CPDF_Page;
+class CPDF_PageObject;
+class CPDF_PageObjectHolder;
+class CPDF_PageRenderCache;
+class CPDF_RenderOptions;
+class CFX_DIBitmap;
+class CFX_Matrix;
+class CFX_RenderDevice;
+
+class CPDF_RenderContext {
+ public:
+  class Layer {
+   public:
+    CPDF_PageObjectHolder* m_pObjectHolder;
+    CFX_Matrix m_Matrix;
+  };
+
+  explicit CPDF_RenderContext(CPDF_Page* pPage);
+  CPDF_RenderContext(CPDF_Document* pDoc, CPDF_PageRenderCache* pPageCache);
+  ~CPDF_RenderContext();
+
+  void AppendLayer(CPDF_PageObjectHolder* pObjectHolder,
+                   const CFX_Matrix* pObject2Device);
+
+  void Render(CFX_RenderDevice* pDevice,
+              const CPDF_RenderOptions* pOptions,
+              const CFX_Matrix* pFinalMatrix);
+
+  void Render(CFX_RenderDevice* pDevice,
+              const CPDF_PageObject* pStopObj,
+              const CPDF_RenderOptions* pOptions,
+              const CFX_Matrix* pFinalMatrix);
+
+  void GetBackground(CFX_DIBitmap* pBuffer,
+                     const CPDF_PageObject* pObj,
+                     const CPDF_RenderOptions* pOptions,
+                     CFX_Matrix* pFinalMatrix);
+
+  FX_DWORD CountLayers() const { return m_Layers.GetSize(); }
+  Layer* GetLayer(FX_DWORD index) { return m_Layers.GetDataPtr(index); }
+
+  CPDF_Document* GetDocument() const { return m_pDocument; }
+  CPDF_Dictionary* GetPageResources() const { return m_pPageResources; }
+  CPDF_PageRenderCache* GetPageCache() const { return m_pPageCache; }
+
+ protected:
+  CPDF_Document* const m_pDocument;
+  CPDF_Dictionary* m_pPageResources;
+  CPDF_PageRenderCache* m_pPageCache;
+  FX_BOOL m_bFirstLayer;
+  CFX_ArrayTemplate<Layer> m_Layers;
+};
+
+#endif  // CORE_FPDFAPI_FPDF_RENDER_INCLUDE_CPDF_RENDERCONTEXT_H_