C++ FX_RECT::IsEmpty方法代码示例

bool CPDF_ImageRenderer::DrawMaskedImage() {
  if (NotDrawing()) {
    m_Result = false;
    return false;
  }

  FX_RECT rect = GetDrawRect();
  if (rect.IsEmpty())
    return false;

  CFX_Matrix new_matrix = GetDrawMatrix(rect);
  CFX_FxgeDevice bitmap_device1;
  if (!bitmap_device1.Create(rect.Width(), rect.Height(), FXDIB_Rgb32, nullptr))
    return true;

#if defined _SKIA_SUPPORT_
  bitmap_device1.Clear(0xffffff);
#else
  bitmap_device1.GetBitmap()->Clear(0xffffff);
#endif
  CPDF_RenderStatus bitmap_render;
  bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1,
                           nullptr, nullptr, nullptr, nullptr, nullptr, 0,
                           m_pRenderStatus->m_bDropObjects, nullptr, true);
  CPDF_ImageRenderer image_render;
  if (image_render.Start(&bitmap_render, m_pDIBSource, 0, 255, &new_matrix,
                         m_Flags, true, FXDIB_BLEND_NORMAL)) {
    image_render.Continue(nullptr);
  }
  CFX_FxgeDevice bitmap_device2;
  if (!bitmap_device2.Create(rect.Width(), rect.Height(), FXDIB_8bppRgb,
                             nullptr))
    return true;

#if defined _SKIA_SUPPORT_
  bitmap_device2.Clear(0);
#else
  bitmap_device2.GetBitmap()->Clear(0);
#endif
  CalculateDrawImage(&bitmap_device1, &bitmap_device2, m_Loader.m_pMask,
                     &new_matrix, rect);
#ifdef _SKIA_SUPPORT_
  m_pRenderStatus->m_pDevice->SetBitsWithMask(
      bitmap_device1.GetBitmap(), bitmap_device2.GetBitmap(), rect.left,
      rect.top, m_BitmapAlpha, m_BlendType);
#else
  bitmap_device2.GetBitmap()->ConvertFormat(FXDIB_8bppMask);
  bitmap_device1.GetBitmap()->MultiplyAlpha(bitmap_device2.GetBitmap());
  if (m_BitmapAlpha < 255)
    bitmap_device1.GetBitmap()->MultiplyAlpha(m_BitmapAlpha);
  m_pRenderStatus->m_pDevice->SetDIBitsWithBlend(
      bitmap_device1.GetBitmap(), rect.left, rect.top, m_BlendType);
#endif  //  _SKIA_SUPPORT_
  return false;
}

FX_BOOL CPDF_RenderStatus::ProcessShading(CPDF_ShadingObject* pShadingObj,
                                          const CFX_Matrix* pObj2Device) {
  FX_RECT rect = pShadingObj->GetBBox(pObj2Device);
  FX_RECT clip_box = m_pDevice->GetClipBox();
  rect.Intersect(clip_box);
  if (rect.IsEmpty()) {
    return TRUE;
  }
  CFX_Matrix matrix = pShadingObj->m_Matrix;
  matrix.Concat(*pObj2Device);
  DrawShading(pShadingObj->m_pShading, &matrix, rect,
              pShadingObj->m_GeneralState.GetAlpha(FALSE),
              m_Options.m_ColorMode == RENDER_COLOR_ALPHA);
  return TRUE;
}

bool CPDF_ImageRenderer::DrawPatternImage(const CFX_Matrix* pObj2Device) {
  if (NotDrawing()) {
    m_Result = false;
    return false;
  }

  FX_RECT rect = GetDrawRect();
  if (rect.IsEmpty())
    return false;

  CFX_Matrix new_matrix = GetDrawMatrix(rect);
  CFX_FxgeDevice bitmap_device1;
  if (!bitmap_device1.Create(rect.Width(), rect.Height(), FXDIB_Rgb32, nullptr))
    return true;

  bitmap_device1.GetBitmap()->Clear(0xffffff);
  CPDF_RenderStatus bitmap_render;
  bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1,
                           nullptr, nullptr, nullptr, nullptr,
                           &m_pRenderStatus->m_Options, 0,
                           m_pRenderStatus->m_bDropObjects, nullptr, true);
  CFX_Matrix patternDevice = *pObj2Device;
  patternDevice.Translate((FX_FLOAT)-rect.left, (FX_FLOAT)-rect.top);
  if (CPDF_TilingPattern* pTilingPattern = m_pPattern->AsTilingPattern()) {
    bitmap_render.DrawTilingPattern(pTilingPattern, m_pImageObject,
                                    &patternDevice, false);
  } else if (CPDF_ShadingPattern* pShadingPattern =
                 m_pPattern->AsShadingPattern()) {
    bitmap_render.DrawShadingPattern(pShadingPattern, m_pImageObject,
                                     &patternDevice, false);
  }

  CFX_FxgeDevice bitmap_device2;
  if (!bitmap_device2.Create(rect.Width(), rect.Height(), FXDIB_8bppRgb,
                             nullptr)) {
    return true;
  }
  bitmap_device2.GetBitmap()->Clear(0);
  CalculateDrawImage(&bitmap_device1, &bitmap_device2, m_pDIBSource,
                     &new_matrix, rect);
  bitmap_device2.GetBitmap()->ConvertFormat(FXDIB_8bppMask);
  bitmap_device1.GetBitmap()->MultiplyAlpha(bitmap_device2.GetBitmap());
  bitmap_device1.GetBitmap()->MultiplyAlpha(255);
  m_pRenderStatus->m_pDevice->SetDIBitsWithBlend(
      bitmap_device1.GetBitmap(), rect.left, rect.top, m_BlendType);
  return false;
}

FX_BOOL CPDF_RenderStatus::GetObjectClippedRect(const CPDF_PageObject* pObj,
                                                const CFX_Matrix* pObj2Device,
                                                FX_BOOL bLogical,
                                                FX_RECT& rect) const {
  rect = pObj->GetBBox(pObj2Device);
  FX_RECT rtClip = m_pDevice->GetClipBox();
  if (!bLogical) {
    CFX_Matrix dCTM = m_pDevice->GetCTM();
    FX_FLOAT a = FXSYS_fabs(dCTM.a);
    FX_FLOAT d = FXSYS_fabs(dCTM.d);
    if (a != 1.0f || d != 1.0f) {
      rect.right = rect.left + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Width() * a);
      rect.bottom = rect.top + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Height() * d);
      rtClip.right =
          rtClip.left + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Width() * a);
      rtClip.bottom =
          rtClip.top + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Height() * d);
    }
  }
  rect.Intersect(rtClip);
  return rect.IsEmpty();
}

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.........

FX_BOOL	CPDF_ImageRenderer::DrawPatternImage(const CFX_Matrix* pObj2Device)
{
    if (m_pRenderStatus->m_bPrint && !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) {
        m_Result = FALSE;
        return FALSE;
    }
    FX_RECT rect = m_ImageMatrix.GetUnitRect().GetOutterRect();
    rect.Intersect(m_pRenderStatus->m_pDevice->GetClipBox());
    if (rect.IsEmpty()) {
        return FALSE;
    }
    CFX_AffineMatrix new_matrix = m_ImageMatrix;
    new_matrix.TranslateI(-rect.left, -rect.top);
    int width = rect.Width();
    int height = rect.Height();
    CFX_FxgeDevice bitmap_device1;
    if (!bitmap_device1.Create(rect.Width(), rect.Height(), FXDIB_Rgb32)) {
        return TRUE;
    }
    bitmap_device1.GetBitmap()->Clear(0xffffff);
    {
        CPDF_RenderStatus bitmap_render;
        bitmap_render.Initialize(m_pRenderStatus->m_Level + 1, m_pRenderStatus->m_pContext, &bitmap_device1, NULL, NULL,
                                 NULL, NULL, &m_pRenderStatus->m_Options, 0, m_pRenderStatus->m_bDropObjects, NULL, TRUE);
        CFX_Matrix patternDevice = *pObj2Device;
        patternDevice.Translate((FX_FLOAT) - rect.left, (FX_FLOAT) - rect.top);
        if(m_pPattern->m_PatternType == PATTERN_TILING) {
            bitmap_render.DrawTilingPattern((CPDF_TilingPattern*)m_pPattern, m_pImageObject, &patternDevice, FALSE);
        } else {
            bitmap_render.DrawShadingPattern((CPDF_ShadingPattern*)m_pPattern, m_pImageObject, &patternDevice, FALSE);
        }
    }
    {
        CFX_FxgeDevice bitmap_device2;
        if (!bitmap_device2.Create(rect.Width(), rect.Height(), FXDIB_8bppRgb)) {
            return TRUE;
        }
        bitmap_device2.GetBitmap()->Clear(0);
        CPDF_RenderStatus bitmap_render;
        bitmap_render.Initialize(m_pRenderStatus->m_Level + 1, m_pRenderStatus->m_pContext, &bitmap_device2, NULL, NULL,
                                 NULL, NULL, NULL, 0, m_pRenderStatus->m_bDropObjects, NULL, TRUE);
        CPDF_ImageRenderer image_render;
        if (image_render.Start(&bitmap_render, m_pDIBSource, 0xffffffff, 255, &new_matrix, m_Flags, TRUE)) {
            image_render.Continue(NULL);
        }
        if (m_Loader.m_MatteColor != 0xffffffff) {
            int matte_r = FXARGB_R(m_Loader.m_MatteColor);
            int matte_g = FXARGB_G(m_Loader.m_MatteColor);
            int matte_b = FXARGB_B(m_Loader.m_MatteColor);
            for (int row = 0; row < height; row ++) {
                FX_LPBYTE dest_scan = (FX_LPBYTE)bitmap_device1.GetBitmap()->GetScanline(row);
                FX_LPCBYTE mask_scan = bitmap_device2.GetBitmap()->GetScanline(row);
                for (int col = 0; col < width; col ++) {
                    int alpha = *mask_scan ++;
                    if (alpha) {
                        int orig = (*dest_scan - matte_b) * 255 / alpha + matte_b;
                        if (orig < 0) {
                            orig = 0;
                        } else if (orig > 255) {
                            orig = 255;
                        }
                        *dest_scan++ = orig;
                        orig = (*dest_scan - matte_g) * 255 / alpha + matte_g;
                        if (orig < 0) {
                            orig = 0;
                        } else if (orig > 255) {
                            orig = 255;
                        }
                        *dest_scan++ = orig;
                        orig = (*dest_scan - matte_r) * 255 / alpha + matte_r;
                        if (orig < 0) {
                            orig = 0;
                        } else if (orig > 255) {
                            orig = 255;
                        }
                        *dest_scan++ = orig;
                        dest_scan ++;
                    } else {
                        dest_scan += 4;
                    }
                }
            }
        }
        bitmap_device2.GetBitmap()->ConvertFormat(FXDIB_8bppMask);
        bitmap_device1.GetBitmap()->MultiplyAlpha(bitmap_device2.GetBitmap());
        bitmap_device1.GetBitmap()->MultiplyAlpha(255);
    }
    m_pRenderStatus->m_pDevice->SetDIBits(bitmap_device1.GetBitmap(), rect.left, rect.top, m_BlendType);
    return FALSE;
}

bool CPDF_ImageRenderer::DrawPatternImage(const CFX_Matrix* pObj2Device) {
  if (m_pRenderStatus->m_bPrint &&
      !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) {
    m_Result = false;
    return false;
  }
  FX_RECT rect = m_ImageMatrix.GetUnitRect().GetOuterRect();
  rect.Intersect(m_pRenderStatus->m_pDevice->GetClipBox());
  if (rect.IsEmpty()) {
    return false;
  }
  CFX_Matrix new_matrix = m_ImageMatrix;
  new_matrix.TranslateI(-rect.left, -rect.top);
  int width = rect.Width();
  int height = rect.Height();
  CFX_FxgeDevice bitmap_device1;
  if (!bitmap_device1.Create(rect.Width(), rect.Height(), FXDIB_Rgb32, nullptr))
    return true;

  bitmap_device1.GetBitmap()->Clear(0xffffff);
  {
    CPDF_RenderStatus bitmap_render;
    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1,
                             nullptr, nullptr, nullptr, nullptr,
                             &m_pRenderStatus->m_Options, 0,
                             m_pRenderStatus->m_bDropObjects, nullptr, true);
    CFX_Matrix patternDevice = *pObj2Device;
    patternDevice.Translate((FX_FLOAT)-rect.left, (FX_FLOAT)-rect.top);
    if (CPDF_TilingPattern* pTilingPattern = m_pPattern->AsTilingPattern()) {
      bitmap_render.DrawTilingPattern(pTilingPattern, m_pImageObject,
                                      &patternDevice, false);
    } else if (CPDF_ShadingPattern* pShadingPattern =
                   m_pPattern->AsShadingPattern()) {
      bitmap_render.DrawShadingPattern(pShadingPattern, m_pImageObject,
                                       &patternDevice, false);
    }
  }
  {
    CFX_FxgeDevice bitmap_device2;
    if (!bitmap_device2.Create(rect.Width(), rect.Height(), FXDIB_8bppRgb,
                               nullptr)) {
      return true;
    }
    bitmap_device2.GetBitmap()->Clear(0);
    CPDF_RenderStatus bitmap_render;
    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2,
                             nullptr, nullptr, nullptr, nullptr, nullptr, 0,
                             m_pRenderStatus->m_bDropObjects, nullptr, true);
    CPDF_ImageRenderer image_render;
    if (image_render.Start(&bitmap_render, m_pDIBSource, 0xffffffff, 255,
                           &new_matrix, m_Flags, true)) {
      image_render.Continue(nullptr);
    }
    if (m_Loader.m_MatteColor != 0xffffffff) {
      int matte_r = FXARGB_R(m_Loader.m_MatteColor);
      int matte_g = FXARGB_G(m_Loader.m_MatteColor);
      int matte_b = FXARGB_B(m_Loader.m_MatteColor);
      for (int row = 0; row < height; row++) {
        uint8_t* dest_scan =
            (uint8_t*)bitmap_device1.GetBitmap()->GetScanline(row);
        const uint8_t* mask_scan = bitmap_device2.GetBitmap()->GetScanline(row);
        for (int col = 0; col < width; col++) {
          int alpha = *mask_scan++;
          if (alpha) {
            int orig = (*dest_scan - matte_b) * 255 / alpha + matte_b;
            if (orig < 0) {
              orig = 0;
            } else if (orig > 255) {
              orig = 255;
            }
            *dest_scan++ = orig;
            orig = (*dest_scan - matte_g) * 255 / alpha + matte_g;
            if (orig < 0) {
              orig = 0;
            } else if (orig > 255) {
              orig = 255;
            }
            *dest_scan++ = orig;
            orig = (*dest_scan - matte_r) * 255 / alpha + matte_r;
            if (orig < 0) {
              orig = 0;
            } else if (orig > 255) {
              orig = 255;
            }
            *dest_scan++ = orig;
            dest_scan++;
          } else {
            dest_scan += 4;
          }
        }
      }
    }
    bitmap_device2.GetBitmap()->ConvertFormat(FXDIB_8bppMask);
    bitmap_device1.GetBitmap()->MultiplyAlpha(bitmap_device2.GetBitmap());
    bitmap_device1.GetBitmap()->MultiplyAlpha(255);
  }
  m_pRenderStatus->m_pDevice->SetDIBitsWithBlend(
      bitmap_device1.GetBitmap(), rect.left, rect.top, m_BlendType);
  return false;
}