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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_FPDF_RENDER_INCLUDE_CPDF_PROGRESSIVERENDERER_H_
#define CORE_FPDFAPI_FPDF_RENDER_INCLUDE_CPDF_PROGRESSIVERENDERER_H_
#include <memory>
#include "core/fpdfapi/fpdf_page/cpdf_pageobjectlist.h"
#include "core/fpdfapi/fpdf_render/include/cpdf_rendercontext.h"
#include "core/fxcrt/include/fx_coordinates.h"
#include "core/fxcrt/include/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;
FX_DWORD m_LayerIndex;
CPDF_RenderContext::Layer* m_pCurrentLayer;
CPDF_PageObjectList::iterator m_LastObjectRendered;
};
#endif // CORE_FPDFAPI_FPDF_RENDER_INCLUDE_CPDF_PROGRESSIVERENDERER_H_
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