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// 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 "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/observable.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_Object;
class CPDF_Page;
class CPDF_PageRenderCache;
class CPDF_PageRenderContext;
// Small layering violation, incomplete type and always null if non-XFA.
class CPDFXFA_Page;
class CPDF_Page : public IPDF_Page,
public Observable<CPDF_Page>,
public CPDF_PageObjectHolder {
public:
class View {}; // Caller implements as desired, empty here due to layering.
template <typename T, typename... Args>
friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
// 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; }
const CFX_FloatRect& GetPageBBox() const { return m_BBox; }
int GetPageRotation() const;
CPDF_PageRenderCache* GetRenderCache() const { return m_pPageRender.get(); }
CPDF_PageRenderContext* GetRenderContext() const {
return m_pRenderContext.get();
}
void SetRenderContext(std::unique_ptr<CPDF_PageRenderContext> pContext);
CPDF_Document* GetPDFDocument() const { return m_pPDFDocument.Get(); }
View* GetView() const { return m_pView.Get(); }
void SetView(View* pView) { m_pView = pView; }
private:
CPDF_Page(CPDF_Document* pDocument,
CPDF_Dictionary* pPageDict,
bool bUseRenderCache);
~CPDF_Page() override;
void StartParse();
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<CPDF_PageRenderCache> m_pPageRender;
std::unique_ptr<CPDF_PageRenderContext> m_pRenderContext;
UnownedPtr<View> m_pView;
};
#endif // CORE_FPDFAPI_PAGE_CPDF_PAGE_H_
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