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C++ CPDF_Document::LoadColorSpace方法代码示例

本文整理汇总了C++中CPDF_Document::LoadColorSpace方法的典型用法代码示例。如果您正苦于以下问题：C++ CPDF_Document::LoadColorSpace方法的具体用法？C++ CPDF_Document::LoadColorSpace怎么用？C++ CPDF_Document::LoadColorSpace使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CPDF_Document的用法示例。


在下文中一共展示了CPDF_Document::LoadColorSpace方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: ProcessTransparency

FX_BOOL CPDF_RenderStatus::ProcessTransparency(CPDF_PageObject* pPageObj,
                                               const CFX_Matrix* pObj2Device) {
#if defined _SKIA_SUPPORT_
  DebugVerifyDeviceIsPreMultiplied();
#endif
  int blend_type = pPageObj->m_GeneralState.GetBlendType();
  if (blend_type == FXDIB_BLEND_UNSUPPORTED)
    return TRUE;

  CPDF_Dictionary* pSMaskDict =
      ToDictionary(pPageObj->m_GeneralState.GetSoftMask());
  if (pSMaskDict) {
    if (pPageObj->IsImage() &&
        pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) {
      pSMaskDict = nullptr;
    }
  }
  CPDF_Dictionary* pFormResource = nullptr;
  FX_FLOAT group_alpha = 1.0f;
  int Transparency = m_Transparency;
  FX_BOOL bGroupTransparent = FALSE;
  if (pPageObj->IsForm()) {
    const CPDF_FormObject* pFormObj = pPageObj->AsForm();
    group_alpha = pFormObj->m_GeneralState.GetFillAlpha();
    Transparency = pFormObj->m_pForm->m_Transparency;
    bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED);
    if (pFormObj->m_pForm->m_pFormDict) {
      pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictBy("Resources");
    }
  }
  bool bTextClip =
      (pPageObj->m_ClipPath && pPageObj->m_ClipPath.GetTextCount() &&
       m_pDevice->GetDeviceClass() == FXDC_DISPLAY &&
       !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP));
  if ((m_Options.m_Flags & RENDER_OVERPRINT) && pPageObj->IsImage() &&
      pPageObj->m_GeneralState.GetFillOP() &&
      pPageObj->m_GeneralState.GetStrokeOP()) {
    CPDF_Document* pDocument = nullptr;
    CPDF_Page* pPage = nullptr;
    if (m_pContext->GetPageCache()) {
      pPage = m_pContext->GetPageCache()->GetPage();
      pDocument = pPage->m_pDocument;
    } else {
      pDocument = pPageObj->AsImage()->GetImage()->GetDocument();
    }
    CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr;
    CPDF_Object* pCSObj = pPageObj->AsImage()
                              ->GetImage()
                              ->GetStream()
                              ->GetDict()
                              ->GetDirectObjectBy("ColorSpace");
    CPDF_ColorSpace* pColorSpace =
        pDocument->LoadColorSpace(pCSObj, pPageResources);
    if (pColorSpace) {
      int format = pColorSpace->GetFamily();
      if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION ||
          format == PDFCS_DEVICEN) {
        blend_type = FXDIB_BLEND_DARKEN;
      }
      pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
    }
  }
  if (!pSMaskDict && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL &&
      !bTextClip && !bGroupTransparent) {
    return FALSE;
  }
  bool isolated = !!(Transparency & PDFTRANS_ISOLATED);
  if (m_bPrint) {
    FX_BOOL bRet = FALSE;
    int rendCaps = m_pDevice->GetRenderCaps();
    if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) &&
        (rendCaps & FXRC_BLEND_MODE)) {
      int oldBlend = m_curBlend;
      m_curBlend = blend_type;
      bRet = DrawObjWithBlend(pPageObj, pObj2Device);
      m_curBlend = oldBlend;
    }
    if (!bRet) {
      DrawObjWithBackground(pPageObj, pObj2Device);
    }
    return TRUE;
  }
  FX_RECT rect = pPageObj->GetBBox(pObj2Device);
  rect.Intersect(m_pDevice->GetClipBox());
  if (rect.IsEmpty()) {
    return TRUE;
  }
  CFX_Matrix deviceCTM = m_pDevice->GetCTM();
  FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a);
  FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
  int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX);
  int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY);
  CFX_FxgeDevice bitmap_device;
  std::unique_ptr<CFX_DIBitmap> oriDevice;
  if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) {
    oriDevice.reset(new CFX_DIBitmap);
    if (!m_pDevice->CreateCompatibleBitmap(oriDevice.get(), width, height))
      return TRUE;
    m_pDevice->GetDIBits(oriDevice.get(), rect.left, rect.top);
  }
//.........这里部分代码省略.........
开发者ID:gradescope，项目名称:pdfium，代码行数:101，代码来源:fpdf_render.cpp

示例2: ProcessTransparency

FX_BOOL CPDF_RenderStatus::ProcessTransparency(
    const CPDF_PageObject* pPageObj,
    const CFX_AffineMatrix* pObj2Device) {
  const CPDF_GeneralStateData* pGeneralState = pPageObj->m_GeneralState;
  int blend_type =
      pGeneralState ? pGeneralState->m_BlendType : FXDIB_BLEND_NORMAL;
  if (blend_type == FXDIB_BLEND_UNSUPPORTED) {
    return TRUE;
  }
  CPDF_Dictionary* pSMaskDict =
      pGeneralState ? ToDictionary(pGeneralState->m_pSoftMask) : NULL;
  if (pSMaskDict) {
    if (pPageObj->m_Type == PDFPAGE_IMAGE &&
        ((CPDF_ImageObject*)pPageObj)
            ->m_pImage->GetDict()
            ->KeyExist(FX_BSTRC("SMask"))) {
      pSMaskDict = NULL;
    }
  }
  CPDF_Dictionary* pFormResource = NULL;
  FX_FLOAT group_alpha = 1.0f;
  int Transparency = m_Transparency;
  FX_BOOL bGroupTransparent = FALSE;
  if (pPageObj->m_Type == PDFPAGE_FORM) {
    CPDF_FormObject* pFormObj = (CPDF_FormObject*)pPageObj;
    const CPDF_GeneralStateData* pStateData =
        pFormObj->m_GeneralState.GetObject();
    if (pStateData) {
      group_alpha = pStateData->m_FillAlpha;
    }
    Transparency = pFormObj->m_pForm->m_Transparency;
    bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED);
    if (pFormObj->m_pForm->m_pFormDict) {
      pFormResource = pFormObj->m_pForm->m_pFormDict->GetDict("Resources");
    }
  }
  FX_BOOL bTextClip = FALSE;
  if (pPageObj->m_ClipPath.NotNull() && pPageObj->m_ClipPath.GetTextCount() &&
      m_pDevice->GetDeviceClass() == FXDC_DISPLAY &&
      !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) {
    bTextClip = TRUE;
  }
  if ((m_Options.m_Flags & RENDER_OVERPRINT) &&
      pPageObj->m_Type == PDFPAGE_IMAGE && pGeneralState &&
      pGeneralState->m_FillOP && pGeneralState->m_StrokeOP) {
    CPDF_Document* pDocument = NULL;
    CPDF_Page* pPage = NULL;
    if (m_pContext->m_pPageCache) {
      pPage = m_pContext->m_pPageCache->GetPage();
      pDocument = pPage->m_pDocument;
    } else {
      pDocument = ((CPDF_ImageObject*)pPageObj)->m_pImage->GetDocument();
    }
    CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL;
    CPDF_Object* pCSObj = ((CPDF_ImageObject*)pPageObj)
                              ->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) {
        blend_type = FXDIB_BLEND_DARKEN;
      }
      pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
    }
  }
  if (pSMaskDict == NULL && group_alpha == 1.0f &&
      blend_type == FXDIB_BLEND_NORMAL && !bTextClip && !bGroupTransparent) {
    return FALSE;
  }
  FX_BOOL isolated = Transparency & PDFTRANS_ISOLATED;
  if (m_bPrint) {
    FX_BOOL bRet = FALSE;
    int rendCaps = m_pDevice->GetRenderCaps();
    if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) &&
        (rendCaps & FXRC_BLEND_MODE)) {
      int oldBlend = m_curBlend;
      m_curBlend = blend_type;
      bRet = DrawObjWithBlend(pPageObj, pObj2Device);
      m_curBlend = oldBlend;
    }
    if (!bRet) {
      DrawObjWithBackground(pPageObj, pObj2Device);
    }
    return TRUE;
  }
  FX_RECT rect = pPageObj->GetBBox(pObj2Device);
  rect.Intersect(m_pDevice->GetClipBox());
  if (rect.IsEmpty()) {
    return TRUE;
  }
  CFX_Matrix deviceCTM = m_pDevice->GetCTM();
  FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a);
  FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
  int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX);
  int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY);
  CFX_FxgeDevice bitmap_device;
//.........这里部分代码省略.........
开发者ID:，项目名称:，代码行数:101，代码来源:

示例3: StartRenderDIBSource


//.........这里部分代码省略.........
  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();
}
开发者ID:MIPS，项目名称:external-pdfium，代码行数:101，代码来源:cpdf_imagerenderer.cpp

示例4: StartRenderDIBSource


//.........这里部分代码省略.........
                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();
}
开发者ID:，项目名称:，代码行数:101，代码来源:


注：本文中的CPDF_Document::LoadColorSpace方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。