src/third_party/pdfium/fpdfsdk/src/fpdf_progressive.cpp

   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
  12 extern 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
  15 extern void DropContext(void* data);
  16
  17 DLLEXPORT 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         Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,FALSE, &IPauseAdapter);
  53
  54         if ( pContext->m_pRenderer )
  55         {
  56                 CPDF_ProgressiveRenderer::RenderStatus status = CPDF_ProgressiveRenderer::Failed;
  57                 status = pContext->m_pRenderer->GetStatus();
  58                 return status;
  59         }
  60         return FPDF_RENDER_FAILED;
  61 }
  62
  63 DLLEXPORT int STDCALL FPDF_RenderPage_Continue(FPDF_PAGE page,IFSDK_PAUSE * pause)
  64 {
  65         if (page == NULL)
  66                 return FPDF_RENDER_FAILED;
  67
  68         if (!pause)
  69                 return FPDF_RENDER_FAILED;
  70
  71         if (pause->version !=1)
  72                 return FPDF_RENDER_FAILED;
  73
  74         CPDF_Page* pPage = (CPDF_Page*)page;
  75
  76 //      FXMT_CSLOCK_OBJ(&pPage->m_PageLock);
  77
  78         CRenderContext * pContext = (CRenderContext*)pPage->GetPrivateData((void*)1);
  79         if (pContext && pContext->m_pRenderer)
  80         {
  81                 IFSDK_PAUSE_Adapter IPauseAdapter(pause);
  82                 pContext->m_pRenderer->Continue(&IPauseAdapter);
  83
  84                 CPDF_ProgressiveRenderer::RenderStatus status = CPDF_ProgressiveRenderer::Failed;
  85                 status = pContext->m_pRenderer->GetStatus();
  86                 return status;
  87         }
  88         return FPDF_RENDER_FAILED;
  89 }
  90
  91
  92 DLLEXPORT void STDCALL FPDF_RenderPage_Close(FPDF_PAGE page)
  93 {
  94         if (page == NULL) return;
  95         CPDF_Page* pPage = (CPDF_Page*)page;
  96
  97 //      FXMT_CSLOCK_OBJ(&pPage->m_PageLock);
  98
  99         CRenderContext * pContext = (CRenderContext*)pPage->GetPrivateData((void*)1);
 100         if (pContext)
 101         {
 102                 pContext->m_pDevice->RestoreState();
 103                 delete pContext;
 104                 pPage->RemovePrivateData((void*)1);
 105         }
 106 }
 107