bool CPDF_ImageRenderer::StartRenderDIBSource() { if (!m_Loader.m_pBitmap) return false; m_BitmapAlpha = FXSYS_round(255 * m_pImageObject->m_GeneralState.GetFillAlpha()); m_pDIBSource = m_Loader.m_pBitmap; if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_ALPHA && !m_Loader.m_pMask) { return StartBitmapAlpha(); } if (m_pImageObject->m_GeneralState.GetTR()) { if (!m_pImageObject->m_GeneralState.GetTransferFunc()) { m_pImageObject->m_GeneralState.SetTransferFunc( m_pRenderStatus->GetTransferFunc( m_pImageObject->m_GeneralState.GetTR())); } if (m_pImageObject->m_GeneralState.GetTransferFunc() && !m_pImageObject->m_GeneralState.GetTransferFunc()->m_bIdentity) { m_pDIBSource = m_Loader.m_pBitmap = m_pImageObject->m_GeneralState.GetTransferFunc()->TranslateImage( m_Loader.m_pBitmap, !m_Loader.m_bCached); if (m_Loader.m_bCached && m_Loader.m_pMask) m_Loader.m_pMask = m_Loader.m_pMask->Clone().release(); m_Loader.m_bCached = false; } } m_FillArgb = 0; m_bPatternColor = false; m_pPattern = nullptr; if (m_pDIBSource->IsAlphaMask()) { const CPDF_Color* pColor = m_pImageObject->m_ColorState.GetFillColor(); if (pColor && pColor->IsPattern()) { m_pPattern = pColor->GetPattern(); if (m_pPattern) m_bPatternColor = true; } m_FillArgb = m_pRenderStatus->GetFillArgb(m_pImageObject); } else if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_GRAY) { m_pClone = m_pDIBSource->Clone(); m_pClone->ConvertColorScale(m_pRenderStatus->m_Options.m_BackColor, m_pRenderStatus->m_Options.m_ForeColor); m_pDIBSource = m_pClone.get(); } m_Flags = 0; if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_DOWNSAMPLE) m_Flags |= RENDER_FORCE_DOWNSAMPLE; else if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_HALFTONE) m_Flags |= RENDER_FORCE_HALFTONE; if (m_pRenderStatus->m_pDevice->GetDeviceClass() != FXDC_DISPLAY) { CPDF_Object* pFilters = m_pImageObject->GetImage()->GetStream()->GetDict()->GetDirectObjectFor( "Filter"); if (pFilters) { if (pFilters->IsName()) { CFX_ByteString bsDecodeType = pFilters->GetString(); if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") m_Flags |= FXRENDER_IMAGE_LOSSY; } else if (CPDF_Array* pArray = pFilters->AsArray()) { for (size_t i = 0; i < pArray->GetCount(); i++) { CFX_ByteString bsDecodeType = pArray->GetStringAt(i); if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") { m_Flags |= FXRENDER_IMAGE_LOSSY; break; } } } } } if (m_pRenderStatus->m_Options.m_Flags & RENDER_NOIMAGESMOOTH) m_Flags |= FXDIB_NOSMOOTH; else if (m_pImageObject->GetImage()->IsInterpol()) m_Flags |= FXDIB_INTERPOL; if (m_Loader.m_pMask) return DrawMaskedImage(); if (m_bPatternColor) return DrawPatternImage(m_pObj2Device); if (m_BitmapAlpha != 255 || !m_pImageObject->m_GeneralState || !m_pImageObject->m_GeneralState.GetFillOP() || m_pImageObject->m_GeneralState.GetOPMode() != 0 || m_pImageObject->m_GeneralState.GetBlendType() != FXDIB_BLEND_NORMAL || m_pImageObject->m_GeneralState.GetStrokeAlpha() != 1.0f || m_pImageObject->m_GeneralState.GetFillAlpha() != 1.0f) { return StartDIBSource(); } CPDF_Document* pDocument = nullptr; CPDF_Page* pPage = nullptr; if (m_pRenderStatus->m_pContext->GetPageCache()) { pPage = m_pRenderStatus->m_pContext->GetPageCache()->GetPage(); pDocument = pPage->m_pDocument; } else { pDocument = m_pImageObject->GetImage()->GetDocument(); } CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr; CPDF_Object* pCSObj = m_pImageObject->GetImage()->GetStream()->GetDict()->GetDirectObjectFor( "ColorSpace"); CPDF_ColorSpace* pColorSpace = pDocument->LoadColorSpace(pCSObj, pPageResources); if (!pColorSpace) return StartDIBSource(); int format = pColorSpace->GetFamily(); if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || format == PDFCS_DEVICEN) { m_BlendType = FXDIB_BLEND_DARKEN; } pDocument->GetPageData()->ReleaseColorSpace(pCSObj); return StartDIBSource(); }
FX_BOOL CPDF_ImageRenderer::StartRenderDIBSource() { if (m_Loader.m_pBitmap == NULL) { return FALSE; } m_BitmapAlpha = 255; const CPDF_GeneralStateData* pGeneralState = m_pImageObject->m_GeneralState; if (pGeneralState) { m_BitmapAlpha = FXSYS_round(pGeneralState->m_FillAlpha * 255); } m_pDIBSource = m_Loader.m_pBitmap; if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_ALPHA && m_Loader.m_pMask == NULL) { return StartBitmapAlpha(); } if (pGeneralState && pGeneralState->m_pTR) { if (!pGeneralState->m_pTransferFunc) { ((CPDF_GeneralStateData*)pGeneralState)->m_pTransferFunc = m_pRenderStatus->GetTransferFunc(pGeneralState->m_pTR); } if (pGeneralState->m_pTransferFunc && !pGeneralState->m_pTransferFunc->m_bIdentity) { m_pDIBSource = m_Loader.m_pBitmap = pGeneralState->m_pTransferFunc->TranslateImage(m_Loader.m_pBitmap, !m_Loader.m_bCached); if (m_Loader.m_bCached && m_Loader.m_pMask) { m_Loader.m_pMask = m_Loader.m_pMask->Clone(); } m_Loader.m_bCached = FALSE; } } m_FillArgb = 0; m_bPatternColor = FALSE; m_pPattern = NULL; if (m_pDIBSource->IsAlphaMask()) { CPDF_Color* pColor = m_pImageObject->m_ColorState.GetFillColor(); if (pColor && pColor->IsPattern()) { m_pPattern = pColor->GetPattern(); if (m_pPattern != NULL) { m_bPatternColor = TRUE; } } m_FillArgb = m_pRenderStatus->GetFillArgb(m_pImageObject); } else if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_GRAY) { m_pClone = m_pDIBSource->Clone(); m_pClone->ConvertColorScale(m_pRenderStatus->m_Options.m_BackColor, m_pRenderStatus->m_Options.m_ForeColor); m_pDIBSource = m_pClone; } m_Flags = 0; if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_DOWNSAMPLE) { m_Flags |= RENDER_FORCE_DOWNSAMPLE; } else if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_HALFTONE) { m_Flags |= RENDER_FORCE_HALFTONE; } if (m_pRenderStatus->m_pDevice->GetDeviceClass() != FXDC_DISPLAY) { CPDF_Object* pFilters = m_pImageObject->m_pImage->GetStream()->GetDict()->GetElementValue( FX_BSTRC("Filter")); if (pFilters) { if (pFilters->IsName()) { CFX_ByteStringC bsDecodeType = pFilters->GetConstString(); if (bsDecodeType == FX_BSTRC("DCTDecode") || bsDecodeType == FX_BSTRC("JPXDecode")) { m_Flags |= FXRENDER_IMAGE_LOSSY; } } else if (CPDF_Array* pArray = pFilters->AsArray()) { for (FX_DWORD i = 0; i < pArray->GetCount(); i++) { CFX_ByteStringC bsDecodeType = pArray->GetConstString(i); if (bsDecodeType == FX_BSTRC("DCTDecode") || bsDecodeType == FX_BSTRC("JPXDecode")) { m_Flags |= FXRENDER_IMAGE_LOSSY; break; } } } } } if (m_pRenderStatus->m_Options.m_Flags & RENDER_NOIMAGESMOOTH) { m_Flags |= FXDIB_NOSMOOTH; } else if (m_pImageObject->m_pImage->IsInterpol()) { m_Flags |= FXDIB_INTERPOL; } if (m_Loader.m_pMask) { return DrawMaskedImage(); } if (m_bPatternColor) { return DrawPatternImage(m_pObj2Device); } if (m_BitmapAlpha == 255 && pGeneralState && pGeneralState->m_FillOP && pGeneralState->m_OPMode == 0 && pGeneralState->m_BlendType == FXDIB_BLEND_NORMAL && pGeneralState->m_StrokeAlpha == 1 && pGeneralState->m_FillAlpha == 1) { CPDF_Document* pDocument = NULL; CPDF_Page* pPage = NULL; if (m_pRenderStatus->m_pContext->m_pPageCache) { pPage = m_pRenderStatus->m_pContext->m_pPageCache->GetPage(); pDocument = pPage->m_pDocument; } else { pDocument = m_pImageObject->m_pImage->GetDocument(); } CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL; CPDF_Object* pCSObj = m_pImageObject->m_pImage->GetStream()->GetDict()->GetElementValue( FX_BSTRC("ColorSpace")); CPDF_ColorSpace* pColorSpace = pDocument->LoadColorSpace(pCSObj, pPageResources); if (pColorSpace) { int format = pColorSpace->GetFamily(); if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || format == PDFCS_DEVICEN) { m_BlendType = FXDIB_BLEND_DARKEN; } pDocument->GetPageData()->ReleaseColorSpace(pCSObj); } } return StartDIBSource(); }