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         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
  70 DLLEXPORT 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
  99 DLLEXPORT 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