// 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_RENDER_CPDF_PROGRESSIVERENDERER_H_ #define CORE_FPDFAPI_RENDER_CPDF_PROGRESSIVERENDERER_H_ #include <memory> #include "core/fpdfapi/page/cpdf_pageobjectlist.h" #include "core/fpdfapi/render/cpdf_rendercontext.h" #include "core/fxcrt/fx_coordinates.h" #include "core/fxcrt/fx_system.h" class CPDF_RenderOptions; class CPDF_RenderStatus; class CFX_RenderDevice; class IFX_Pause; class CPDF_ProgressiveRenderer { public: // Must match FDF_RENDER_* definitions in public/fpdf_progressive.h, but // cannot #include that header. fpdfsdk/fpdf_progressive.cpp has // static_asserts to make sure the two sets of values match. enum Status { Ready, // FPDF_RENDER_READER ToBeContinued, // FPDF_RENDER_TOBECOUNTINUED Done, // FPDF_RENDER_DONE Failed // FPDF_RENDER_FAILED }; static int ToFPDFStatus(Status status) { return static_cast<int>(status); } CPDF_ProgressiveRenderer(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, const CPDF_RenderOptions* pOptions); ~CPDF_ProgressiveRenderer(); Status GetStatus() const { return m_Status; } void Start(IFX_Pause* pPause); void Continue(IFX_Pause* pPause); private: void RenderStep(); // Maximum page objects to render before checking for pause. static const int kStepLimit = 100; Status m_Status; CPDF_RenderContext* const m_pContext; CFX_RenderDevice* const m_pDevice; const CPDF_RenderOptions* const m_pOptions; std::unique_ptr<CPDF_RenderStatus> m_pRenderStatus; CFX_FloatRect m_ClipRect; uint32_t m_LayerIndex; CPDF_RenderContext::Layer* m_pCurrentLayer; CPDF_PageObjectList::iterator m_LastObjectRendered; }; #endif // CORE_FPDFAPI_RENDER_CPDF_PROGRESSIVERENDERER_H_