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 "public/fpdf_progressive.h" 8 9 #include "fpdfsdk/include/fsdk_define.h" 10 #include "fpdfsdk/include/fsdk_rendercontext.h" 11 #include "public/fpdfview.h" 12 13 // These checks are here because core/ and public/ cannot depend on each other. 14 static_assert(CPDF_ProgressiveRenderer::Ready == FPDF_RENDER_READER, 15 "CPDF_ProgressiveRenderer::Ready value mismatch"); 16 static_assert(CPDF_ProgressiveRenderer::ToBeContinued == 17 FPDF_RENDER_TOBECOUNTINUED, 18 "CPDF_ProgressiveRenderer::ToBeContinued value mismatch"); 19 static_assert(CPDF_ProgressiveRenderer::Done == FPDF_RENDER_DONE, 20 "CPDF_ProgressiveRenderer::Done value mismatch"); 21 static_assert(CPDF_ProgressiveRenderer::Failed == FPDF_RENDER_FAILED, 22 "CPDF_ProgressiveRenderer::Failed value mismatch"); 23 24 DLLEXPORT int STDCALL FPDF_RenderPageBitmap_Start(FPDF_BITMAP bitmap, 25 FPDF_PAGE page, 26 int start_x, 27 int start_y, 28 int size_x, 29 int size_y, 30 int rotate, 31 int flags, 32 IFSDK_PAUSE* pause) { 33 if (!bitmap || !pause || pause->version != 1) 34 return FPDF_RENDER_FAILED; 35 36 CPDF_Page* pPage = CPDFPageFromFPDFPage(page); 37 if (!pPage) 38 return FPDF_RENDER_FAILED; 39 40 CRenderContext* pContext = new CRenderContext; 41 pPage->SetPrivateData((void*)1, pContext, DropContext); 42 #ifdef _SKIA_SUPPORT_ 43 pContext->m_pDevice = new CFX_SkiaDevice; 44 if (flags & FPDF_REVERSE_BYTE_ORDER) 45 ((CFX_SkiaDevice*)pContext->m_pDevice) 46 ->Attach((CFX_DIBitmap*)bitmap, 0, TRUE); 47 else 48 ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap); 49 #else 50 pContext->m_pDevice = new CFX_FxgeDevice; 51 if (flags & FPDF_REVERSE_BYTE_ORDER) 52 ((CFX_FxgeDevice*)pContext->m_pDevice) 53 ->Attach((CFX_DIBitmap*)bitmap, 0, TRUE); 54 else 55 ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap); 56 #endif 57 IFSDK_PAUSE_Adapter IPauseAdapter(pause); 58 59 FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y, 60 rotate, flags, FALSE, &IPauseAdapter); 61 62 if (pContext->m_pRenderer) { 63 return CPDF_ProgressiveRenderer::ToFPDFStatus( 64 pContext->m_pRenderer->GetStatus()); 65 } 66 return FPDF_RENDER_FAILED; 67 } 68 69 DLLEXPORT int STDCALL FPDF_RenderPage_Continue(FPDF_PAGE page, 70 IFSDK_PAUSE* pause) { 71 if (!pause || pause->version != 1) 72 return FPDF_RENDER_FAILED; 73 74 CPDF_Page* pPage = CPDFPageFromFPDFPage(page); 75 if (!pPage) 76 return FPDF_RENDER_FAILED; 77 78 CRenderContext* pContext = (CRenderContext*)pPage->GetPrivateData((void*)1); 79 if (pContext && pContext->m_pRenderer) { 80 IFSDK_PAUSE_Adapter IPauseAdapter(pause); 81 pContext->m_pRenderer->Continue(&IPauseAdapter); 82 return CPDF_ProgressiveRenderer::ToFPDFStatus( 83 pContext->m_pRenderer->GetStatus()); 84 } 85 return FPDF_RENDER_FAILED; 86 } 87 88 DLLEXPORT void STDCALL FPDF_RenderPage_Close(FPDF_PAGE page) { 89 CPDF_Page* pPage = CPDFPageFromFPDFPage(page); 90 if (!pPage) 91 return; 92 93 CRenderContext* pContext = (CRenderContext*)pPage->GetPrivateData((void*)1); 94 if (!pContext) 95 return; 96 97 pContext->m_pDevice->RestoreState(); 98 delete pContext; 99 pPage->RemovePrivateData((void*)1); 100 } 101
