fpdf_progressive.cpp revision ee451cb395940862dad63c85adfe8f2fd55e864c 
1// Copyright 2014 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#include "../include/fpdf_progressive.h"
8#include "../include/fsdk_define.h"
9#include "../include/fpdfview.h"
10#include "../include/fsdk_rendercontext.h"
11
12extern void (*Func_RenderPage)( CRenderContext*, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
13						int rotate, int flags,FX_BOOL bNeedToRestore, IFSDK_PAUSE_Adapter * pause );
14
15extern void DropContext(void* data);
16
17DLLEXPORT int STDCALL FPDF_RenderPageBitmap_Start( FPDF_BITMAP bitmap, FPDF_PAGE page,
18													int start_x, int start_y, int size_x,
19												    int size_y, int rotate, int flags,
20													IFSDK_PAUSE * pause )
21{
22	if (bitmap == NULL || page == NULL)
23		return FPDF_RENDER_FAILED;
24
25 	if (!pause)
26 		return FPDF_RENDER_FAILED;
27
28	if (pause->version !=1)
29		return FPDF_RENDER_FAILED;
30
31	CPDF_Page* pPage = (CPDF_Page*)page;
32
33//	FXMT_CSLOCK_OBJ(&pPage->m_PageLock);
34
35	CRenderContext* pContext = FX_NEW CRenderContext;
36	pPage->SetPrivateData((void*)1, pContext, DropContext );
37#ifdef _SKIA_SUPPORT_
38	pContext->m_pDevice = FX_NEW CFX_SkiaDevice;
39	if (flags & FPDF_REVERSE_BYTE_ORDER)
40		((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap,0,TRUE);
41	else
42		((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap);
43#else
44	pContext->m_pDevice = FX_NEW CFX_FxgeDevice;
45	if (flags & FPDF_REVERSE_BYTE_ORDER)
46		((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap,0,TRUE);
47	else
48		((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap);
49#endif
50	IFSDK_PAUSE_Adapter IPauseAdapter(pause);
51
52	if (flags & FPDF_NO_CATCH)
53		Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,FALSE, &IPauseAdapter);
54	else {
55		try {
56			Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,FALSE, &IPauseAdapter);
57			}
58		catch (...){}
59	}
60
61	if ( pContext->m_pRenderer )
62	{
63		CPDF_ProgressiveRenderer::RenderStatus status = CPDF_ProgressiveRenderer::Failed;
64		status = pContext->m_pRenderer->GetStatus();
65		return status;
66	}
67	return FPDF_RENDER_FAILED;
68}
69
70DLLEXPORT int STDCALL FPDF_RenderPage_Continue(FPDF_PAGE page,IFSDK_PAUSE * pause)
71{
72	if (page == NULL)
73		return FPDF_RENDER_FAILED;
74
75 	if (!pause)
76		return FPDF_RENDER_FAILED;
77
78	if (pause->version !=1)
79		return FPDF_RENDER_FAILED;
80
81	CPDF_Page* pPage = (CPDF_Page*)page;
82
83//	FXMT_CSLOCK_OBJ(&pPage->m_PageLock);
84
85	CRenderContext * pContext = (CRenderContext*)pPage->GetPrivateData((void*)1);
86	if (pContext && pContext->m_pRenderer)
87	{
88		IFSDK_PAUSE_Adapter IPauseAdapter(pause);
89		pContext->m_pRenderer->Continue(&IPauseAdapter);
90
91		CPDF_ProgressiveRenderer::RenderStatus status = CPDF_ProgressiveRenderer::Failed;
92		status = pContext->m_pRenderer->GetStatus();
93		return status;
94	}
95	return FPDF_RENDER_FAILED;
96}
97
98
99DLLEXPORT void STDCALL FPDF_RenderPage_Close(FPDF_PAGE page)
100{
101	if (page == NULL) return;
102	CPDF_Page* pPage = (CPDF_Page*)page;
103
104//	FXMT_CSLOCK_OBJ(&pPage->m_PageLock);
105
106	CRenderContext * pContext = (CRenderContext*)pPage->GetPrivateData((void*)1);
107	if (pContext)
108	{
109		pContext->m_pDevice->RestoreState();
110		delete pContext;
111		pPage->RemovePrivateData((void*)1);
112	}
113}
114
115