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1 // Copyright 2016 PDFium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
6 | |
7 #ifndef CORE_FPDFAPI_FPDF_RENDER_CPDF_PROGRESSIVERENDERER_H_ | |
8 #define CORE_FPDFAPI_FPDF_RENDER_CPDF_PROGRESSIVERENDERER_H_ | |
9 | |
10 #include <memory> | |
11 | |
12 #include "core/fpdfapi/fpdf_render/cpdf_rendercontext.h" | |
13 #include "core/fpdfapi/page/cpdf_pageobjectlist.h" | |
14 #include "core/fxcrt/fx_coordinates.h" | |
15 #include "core/fxcrt/fx_system.h" | |
16 | |
17 class CPDF_RenderOptions; | |
18 class CPDF_RenderStatus; | |
19 class CFX_RenderDevice; | |
20 class IFX_Pause; | |
21 | |
22 class CPDF_ProgressiveRenderer { | |
23 public: | |
24 // Must match FDF_RENDER_* definitions in public/fpdf_progressive.h, but | |
25 // cannot #include that header. fpdfsdk/fpdf_progressive.cpp has | |
26 // static_asserts to make sure the two sets of values match. | |
27 enum Status { | |
28 Ready, // FPDF_RENDER_READER | |
29 ToBeContinued, // FPDF_RENDER_TOBECOUNTINUED | |
30 Done, // FPDF_RENDER_DONE | |
31 Failed // FPDF_RENDER_FAILED | |
32 }; | |
33 | |
34 static int ToFPDFStatus(Status status) { return static_cast<int>(status); } | |
35 | |
36 CPDF_ProgressiveRenderer(CPDF_RenderContext* pContext, | |
37 CFX_RenderDevice* pDevice, | |
38 const CPDF_RenderOptions* pOptions); | |
39 ~CPDF_ProgressiveRenderer(); | |
40 | |
41 Status GetStatus() const { return m_Status; } | |
42 void Start(IFX_Pause* pPause); | |
43 void Continue(IFX_Pause* pPause); | |
44 | |
45 private: | |
46 void RenderStep(); | |
47 | |
48 // Maximum page objects to render before checking for pause. | |
49 static const int kStepLimit = 100; | |
50 | |
51 Status m_Status; | |
52 CPDF_RenderContext* const m_pContext; | |
53 CFX_RenderDevice* const m_pDevice; | |
54 const CPDF_RenderOptions* const m_pOptions; | |
55 std::unique_ptr<CPDF_RenderStatus> m_pRenderStatus; | |
56 CFX_FloatRect m_ClipRect; | |
57 uint32_t m_LayerIndex; | |
58 CPDF_RenderContext::Layer* m_pCurrentLayer; | |
59 CPDF_PageObjectList::iterator m_LastObjectRendered; | |
60 }; | |
61 | |
62 #endif // CORE_FPDFAPI_FPDF_RENDER_CPDF_PROGRESSIVERENDERER_H_ | |
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