| // 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_PAGE_CPDF_PAGE_H_ |
| #define CORE_FPDFAPI_PAGE_CPDF_PAGE_H_ |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "core/fpdfapi/page/cpdf_pageobjectholder.h" |
| #include "core/fpdfapi/page/ipdf_page.h" |
| #include "core/fxcrt/fx_coordinates.h" |
| #include "core/fxcrt/fx_system.h" |
| #include "core/fxcrt/observed_ptr.h" |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxcrt/unowned_ptr.h" |
| #include "third_party/base/optional.h" |
| |
| class CPDF_Dictionary; |
| class CPDF_Document; |
| class CPDF_Image; |
| class CPDF_Object; |
| |
| class CPDF_Page final : public IPDF_Page, public CPDF_PageObjectHolder { |
| public: |
| // Caller implements as desired, empty here due to layering. |
| class View : public Observable {}; |
| |
| // Data for the render layer to attach to this page. |
| class RenderContextIface { |
| public: |
| virtual ~RenderContextIface() {} |
| }; |
| |
| // Cache for the render layer to attach to this page. |
| class RenderCacheIface { |
| public: |
| virtual ~RenderCacheIface() {} |
| virtual void ResetBitmapForImage(const RetainPtr<CPDF_Image>& pImage) = 0; |
| }; |
| |
| class RenderContextClearer { |
| public: |
| explicit RenderContextClearer(CPDF_Page* pPage); |
| ~RenderContextClearer(); |
| |
| private: |
| UnownedPtr<CPDF_Page> const m_pPage; |
| }; |
| |
| CONSTRUCT_VIA_MAKE_RETAIN; |
| |
| // IPDF_Page: |
| CPDF_Page* AsPDFPage() override; |
| CPDFXFA_Page* AsXFAPage() override; |
| CPDF_Document* GetDocument() const override; |
| float GetPageWidth() const override; |
| float GetPageHeight() const override; |
| CFX_Matrix GetDisplayMatrix(const FX_RECT& rect, int iRotate) const override; |
| Optional<CFX_PointF> DeviceToPage( |
| const FX_RECT& rect, |
| int rotate, |
| const CFX_PointF& device_point) const override; |
| Optional<CFX_PointF> PageToDevice( |
| const FX_RECT& rect, |
| int rotate, |
| const CFX_PointF& page_point) const override; |
| |
| // CPDF_PageObjectHolder: |
| bool IsPage() const override; |
| |
| void ParseContent(); |
| const CFX_SizeF& GetPageSize() const { return m_PageSize; } |
| int GetPageRotation() const; |
| RenderCacheIface* GetRenderCache() const { return m_pRenderCache.get(); } |
| void SetRenderCache(std::unique_ptr<RenderCacheIface> pCache) { |
| m_pRenderCache = std::move(pCache); |
| } |
| |
| RenderContextIface* GetRenderContext() const { |
| return m_pRenderContext.get(); |
| } |
| void SetRenderContext(std::unique_ptr<RenderContextIface> pContext) { |
| m_pRenderContext = std::move(pContext); |
| } |
| |
| CPDF_Document* GetPDFDocument() const { return m_pPDFDocument.Get(); } |
| View* GetView() const { return m_pView.Get(); } |
| void SetView(View* pView) { m_pView.Reset(pView); } |
| void UpdateDimensions(); |
| |
| private: |
| CPDF_Page(CPDF_Document* pDocument, CPDF_Dictionary* pPageDict); |
| ~CPDF_Page() override; |
| |
| CPDF_Object* GetPageAttr(const ByteString& name) const; |
| CFX_FloatRect GetBox(const ByteString& name) const; |
| |
| CFX_SizeF m_PageSize; |
| CFX_Matrix m_PageMatrix; |
| UnownedPtr<CPDF_Document> m_pPDFDocument; |
| std::unique_ptr<RenderCacheIface> m_pRenderCache; |
| std::unique_ptr<RenderContextIface> m_pRenderContext; |
| ObservedPtr<View> m_pView; |
| }; |
| |
| #endif // CORE_FPDFAPI_PAGE_CPDF_PAGE_H_ |