C++ CFX_FxgeDevice类代码示例

DLLEXPORT int STDCALL FPDF_RenderPageBitmap_Start(FPDF_BITMAP bitmap,
                                                  FPDF_PAGE page,
                                                  int start_x,
                                                  int start_y,
                                                  int size_x,
                                                  int size_y,
                                                  int rotate,
                                                  int flags,
                                                  IFSDK_PAUSE* pause) {
  if (!bitmap || !pause || pause->version != 1)
    return FPDF_RENDER_FAILED;

  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
  if (!pPage)
    return FPDF_RENDER_FAILED;

  CPDF_PageRenderContext* pContext = new CPDF_PageRenderContext;
  pPage->SetRenderContext(WrapUnique(pContext));
  CFX_FxgeDevice* pDevice = new CFX_FxgeDevice;
  pContext->m_pDevice.reset(pDevice);
  CFX_DIBitmap* pBitmap = CFXBitmapFromFPDFBitmap(bitmap);
  pDevice->Attach(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER), nullptr, false);

  IFSDK_PAUSE_Adapter IPauseAdapter(pause);
  FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
                         rotate, flags, FALSE, &IPauseAdapter);

  if (pContext->m_pRenderer) {
    return CPDF_ProgressiveRenderer::ToFPDFStatus(
        pContext->m_pRenderer->GetStatus());
  }
  return FPDF_RENDER_FAILED;
}

void CFDE_TextOut::SetDIBitmap(CFX_DIBitmap* pDIB) {
  ASSERT(pDIB);

  m_pRenderDevice.reset();
  CFX_FxgeDevice* device = new CFX_FxgeDevice;
  device->Attach(pDIB, false, nullptr, false);
  m_pRenderDevice.reset(new CFDE_RenderDevice(device, FALSE));
}

void CFDE_TextOut::SetDIBitmap(CFX_DIBitmap* pDIB) {
  ASSERT(pDIB);

  m_pRenderDevice.reset();
  CFX_FxgeDevice* device = new CFX_FxgeDevice;
  device->Attach(pDIB, false, nullptr, false);
  m_pRenderDevice = pdfium::MakeUnique<CFDE_RenderDevice>(device, false);
}

void CPDF_RenderContext::GetBackground(CFX_DIBitmap* pBuffer,
                                       const CPDF_PageObject* pObj,
                                       const CPDF_RenderOptions* pOptions,
                                       CFX_Matrix* pFinalMatrix) {
  CFX_FxgeDevice device;
  device.Attach(pBuffer, false, nullptr, false);

  FX_RECT rect(0, 0, device.GetWidth(), device.GetHeight());
  device.FillRect(&rect, 0xffffffff);
  Render(&device, pObj, pOptions, pFinalMatrix);
}

void CFWL_FormTP::InitCaption(FX_BOOL bActive) {
  if (bActive) {
    CFX_FxgeDevice dev;
    CFX_Graphics gs;
    CFX_Path path;
    path.Create();
    if (m_pActiveBitmap) {
      delete m_pActiveBitmap;
      m_pActiveBitmap = NULL;
    }
    m_pActiveBitmap = new CFX_DIBitmap;
    m_pActiveBitmap->Create(1, FWLTHEME_CAPACITY_CYCaption, FXDIB_Argb);
    dev.Attach(m_pActiveBitmap);
    gs.Create(&dev);
    path.AddRectangle(0, 0, 1, 5);
    DrawAxialShading(&gs, 0, 0, 0, 5, m_pThemeData->clrHeadBK[0][0],
                     m_pThemeData->clrHeadBK[0][1], &path);
    path.Clear();
    path.AddRectangle(0, 5, 1, 15);
    DrawAxialShading(&gs, 0, 5, 0, 20, m_pThemeData->clrHeadBK[0][1],
                     m_pThemeData->clrHeadBK[0][2], &path);
    path.Clear();
    path.AddRectangle(0, 20, 1, FWLTHEME_CAPACITY_CYCaption - 19);
    DrawAxialShading(&gs, 0, 20, 0, FWLTHEME_CAPACITY_CYCaption,
                     m_pThemeData->clrHeadBK[0][2],
                     m_pThemeData->clrHeadBK[0][3], &path);
  } else {
    CFX_FxgeDevice dev;
    CFX_Graphics gs;
    CFX_Path path;
    path.Create();
    if (m_pDeactivebitmap) {
      delete m_pDeactivebitmap;
      m_pDeactivebitmap = NULL;
    }
    m_pDeactivebitmap = new CFX_DIBitmap;
    m_pDeactivebitmap->Create(1, FWLTHEME_CAPACITY_CYCaption, FXDIB_Argb);
    dev.Attach(m_pDeactivebitmap);
    gs.Create(&dev);
    path.AddRectangle(0, 0, 1, 5);
    DrawAxialShading(&gs, 0, 0, 0, 5, m_pThemeData->clrHeadBK[1][0],
                     m_pThemeData->clrHeadBK[1][1], &path);
    path.Clear();
    path.AddRectangle(0, 5, 1, 15);
    DrawAxialShading(&gs, 0, 5, 0, 20, m_pThemeData->clrHeadBK[1][1],
                     m_pThemeData->clrHeadBK[1][2], &path);
    path.Clear();
    path.AddRectangle(0, 20, 1, FWLTHEME_CAPACITY_CYCaption - 19);
    DrawAxialShading(&gs, 0, 20, 0, FWLTHEME_CAPACITY_CYCaption,
                     m_pThemeData->clrHeadBK[1][2],
                     m_pThemeData->clrHeadBK[1][3], &path);
  }
}

CFX_DIBitmap* CPDF_RenderStatus::GetBackdrop(const CPDF_PageObject* pObj,
                                             const FX_RECT& rect,
                                             int& left,
                                             int& top,
                                             FX_BOOL bBackAlphaRequired) {
  FX_RECT bbox = rect;
  bbox.Intersect(m_pDevice->GetClipBox());
  left = bbox.left;
  top = bbox.top;
  CFX_Matrix deviceCTM = m_pDevice->GetCTM();
  FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a);
  FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d);
  int width = FXSYS_round(bbox.Width() * scaleX);
  int height = FXSYS_round(bbox.Height() * scaleY);
  std::unique_ptr<CFX_DIBitmap> pBackdrop(new CFX_DIBitmap);
  if (bBackAlphaRequired && !m_bDropObjects)
    pBackdrop->Create(width, height, FXDIB_Argb);
  else
    m_pDevice->CreateCompatibleBitmap(pBackdrop.get(), width, height);

  if (!pBackdrop->GetBuffer())
    return nullptr;

  FX_BOOL bNeedDraw;
  if (pBackdrop->HasAlpha())
    bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT);
  else
    bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_GET_BITS);

  if (!bNeedDraw) {
    m_pDevice->GetDIBits(pBackdrop.get(), left, top);
    return pBackdrop.release();
  }

  CFX_Matrix FinalMatrix = m_DeviceMatrix;
  FinalMatrix.TranslateI(-left, -top);
  FinalMatrix.Scale(scaleX, scaleY);
  pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff);
  CFX_FxgeDevice device;
  device.Attach(pBackdrop.get(), false, nullptr, false);
  m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix);
  return pBackdrop.release();
}

void CBC_OneDimWriter::ShowBitmapChars(CFX_DIBitmap* pOutBitmap,
                                       const CFX_ByteString str,
                                       FX_FLOAT geWidth,
                                       FXTEXT_CHARPOS* pCharPos,
                                       FX_FLOAT locX,
                                       FX_FLOAT locY,
                                       int32_t barWidth) {
  int32_t iFontSize = (int32_t)fabs(m_fFontSize);
  int32_t iTextHeight = iFontSize + 1;
  CFX_FxgeDevice ge;
  ge.Create((int)geWidth, iTextHeight, m_colorSpace, nullptr);
  FX_RECT geRect(0, 0, (int)geWidth, iTextHeight);
  ge.FillRect(&geRect, m_backgroundColor);
  CFX_Matrix affine_matrix(1.0, 0.0, 0.0, -1.0, 0.0, (FX_FLOAT)iFontSize);
  ge.DrawNormalText(str.GetLength(), pCharPos, m_pFont, (FX_FLOAT)iFontSize,
                    &affine_matrix, m_fontColor, FXTEXT_CLEARTYPE);
  CFX_FxgeDevice geBitmap;
  geBitmap.Attach(pOutBitmap, false, nullptr, false);
  geBitmap.SetDIBits(ge.GetBitmap(), (int)locX, (int)locY);
}

static void renderPageBitmap(FPDF_BITMAP bitmap, FPDF_PAGE page, int destLeft, int destTop,
        int destRight, int destBottom, SkMatrix* transform, int flags) {
    // Note: this code ignores the currently unused RENDER_NO_NATIVETEXT,
    // FPDF_RENDER_LIMITEDIMAGECACHE, FPDF_RENDER_FORCEHALFTONE, FPDF_GRAYSCALE,
    // and FPDF_ANNOT flags. To add support for that refer to FPDF_RenderPage_Retail
    // in fpdfview.cpp

    CRenderContext* pContext = FX_NEW CRenderContext;

    CPDF_Page* pPage = (CPDF_Page*) page;
    pPage->SetPrivateData((void*) 1, pContext, DropContext);

    CFX_FxgeDevice* fxgeDevice = FX_NEW CFX_FxgeDevice;
    pContext->m_pDevice = fxgeDevice;

    // Reverse the bytes (last argument TRUE) since the Android
    // format is ARGB while the renderer uses BGRA internally.
    fxgeDevice->Attach((CFX_DIBitmap*) bitmap, 0, TRUE);

    CPDF_RenderOptions* renderOptions = pContext->m_pOptions;

    if (!renderOptions) {
        renderOptions = FX_NEW CPDF_RenderOptions;
        pContext->m_pOptions = renderOptions;
    }

    if (flags & FPDF_LCD_TEXT) {
        renderOptions->m_Flags |= RENDER_CLEARTYPE;
    } else {
        renderOptions->m_Flags &= ~RENDER_CLEARTYPE;
    }

    const CPDF_OCContext::UsageType usage = (flags & FPDF_PRINTING)
            ? CPDF_OCContext::Print : CPDF_OCContext::View;

    renderOptions->m_AddFlags = flags >> 8;
    renderOptions->m_pOCContext = new CPDF_OCContext(pPage->m_pDocument, usage);

    fxgeDevice->SaveState();

    FX_RECT clip;
    clip.left = destLeft;
    clip.right = destRight;
    clip.top = destTop;
    clip.bottom = destBottom;
    fxgeDevice->SetClip_Rect(&clip);

    CPDF_RenderContext* pageContext = FX_NEW CPDF_RenderContext;
    pContext->m_pContext = pageContext;
    pageContext->Create(pPage);

    CFX_AffineMatrix matrix;
    if (!transform) {
        pPage->GetDisplayMatrix(matrix, destLeft, destTop, destRight - destLeft,
                destBottom - destTop, 0);
    } else {
        // PDF's coordinate system origin is left-bottom while
        // in graphics it is the top-left, so remap the origin.
        matrix.Set(1, 0, 0, -1, 0, pPage->GetPageHeight());

        SkScalar transformValues[6];
        transform->asAffine(transformValues);

        matrix.Concat(transformValues[SkMatrix::kAScaleX], transformValues[SkMatrix::kASkewY],
                transformValues[SkMatrix::kASkewX], transformValues[SkMatrix::kAScaleY],
                transformValues[SkMatrix::kATransX], transformValues[SkMatrix::kATransY]);
    }
    pageContext->AppendObjectList(pPage, &matrix);

    pContext->m_pRenderer = FX_NEW CPDF_ProgressiveRenderer;
    pContext->m_pRenderer->Start(pageContext, fxgeDevice, renderOptions, NULL);

    fxgeDevice->RestoreState();

    pPage->RemovePrivateData((void*) 1);

    delete pContext;
}

void CBC_OnedUPCAWriter::ShowChars(const CFX_WideStringC& contents,
                                   CFX_DIBitmap* pOutBitmap,
                                   CFX_RenderDevice* device,
                                   const CFX_Matrix* matrix,
                                   int32_t barWidth,
                                   int32_t multiple,
                                   int32_t& e) {
  if (!device && !pOutBitmap) {
    e = BCExceptionIllegalArgument;
    return;
  }

  int32_t leftPadding = 7 * multiple;
  int32_t leftPosition = 10 * multiple + leftPadding;
  CFX_ByteString str = FX_UTF8Encode(contents);
  int32_t iLen = str.GetLength();
  FXTEXT_CHARPOS* pCharPos = FX_Alloc(FXTEXT_CHARPOS, iLen);
  FXSYS_memset(pCharPos, 0, sizeof(FXTEXT_CHARPOS) * iLen);
  CFX_ByteString tempStr = str.Mid(1, 5);
  FX_FLOAT strWidth = (FX_FLOAT)35 * multiple;
  FX_FLOAT blank = 0.0;
  CFX_FxgeDevice geBitmap;
  if (pOutBitmap)
    geBitmap.Attach(pOutBitmap, false, nullptr, false);

  iLen = tempStr.GetLength();
  int32_t iFontSize = (int32_t)fabs(m_fFontSize);
  int32_t iTextHeight = iFontSize + 1;
  if (!pOutBitmap) {
    CFX_Matrix matr(m_outputHScale, 0.0, 0.0, 1.0, 0.0, 0.0);
    CFX_FloatRect rect(
        (FX_FLOAT)leftPosition, (FX_FLOAT)(m_Height - iTextHeight),
        (FX_FLOAT)(leftPosition + strWidth - 0.5), (FX_FLOAT)m_Height);
    matr.Concat(*matrix);
    matr.TransformRect(rect);
    FX_RECT re = rect.GetOutterRect();
    device->FillRect(&re, m_backgroundColor);
    CFX_Matrix matr1(m_outputHScale, 0.0, 0.0, 1.0, 0.0, 0.0);
    CFX_FloatRect rect1(
        (FX_FLOAT)(leftPosition + 40 * multiple),
        (FX_FLOAT)(m_Height - iTextHeight),
        (FX_FLOAT)((leftPosition + 40 * multiple) + strWidth - 0.5),
        (FX_FLOAT)m_Height);
    matr1.Concat(*matrix);
    matr1.TransformRect(rect1);
    re = rect1.GetOutterRect();
    device->FillRect(&re, m_backgroundColor);
    FX_FLOAT strWidth1 = (FX_FLOAT)multiple * 7;
    CFX_Matrix matr2(m_outputHScale, 0.0, 0.0, 1.0, 0.0, 0.0);
    CFX_FloatRect rect2(0.0, (FX_FLOAT)(m_Height - iTextHeight),
                        (FX_FLOAT)strWidth1 - 1, (FX_FLOAT)m_Height);
    matr2.Concat(*matrix);
    matr2.TransformRect(rect2);
    re = rect2.GetOutterRect();
    device->FillRect(&re, m_backgroundColor);
    CFX_Matrix matr3(m_outputHScale, 0.0, 0.0, 1.0, 0.0, 0.0);
    CFX_FloatRect rect3(
        (FX_FLOAT)(leftPosition + 85 * multiple),
        (FX_FLOAT)(m_Height - iTextHeight),
        (FX_FLOAT)((leftPosition + 85 * multiple) + strWidth1 - 0.5),
        (FX_FLOAT)m_Height);
    matr3.Concat(*matrix);
    matr3.TransformRect(rect3);
    re = rect3.GetOutterRect();
    device->FillRect(&re, m_backgroundColor);
  }
  if (!pOutBitmap)
    strWidth = strWidth * m_outputHScale;

  CalcTextInfo(tempStr, pCharPos + 1, m_pFont, strWidth, iFontSize, blank);
  CFX_Matrix affine_matrix(1.0, 0.0, 0.0, -1.0, 0.0, (FX_FLOAT)iFontSize);
  CFX_FxgeDevice ge;
  if (pOutBitmap) {
    ge.Create((int)strWidth, iTextHeight, FXDIB_Argb, nullptr);
    ge.GetBitmap()->Clear(m_backgroundColor);
    ge.DrawNormalText(iLen, pCharPos + 1, m_pFont,
                      CFX_GEModule::Get()->GetFontCache(), (FX_FLOAT)iFontSize,
                      &affine_matrix, m_fontColor, FXTEXT_CLEARTYPE);
    geBitmap.SetDIBits(ge.GetBitmap(), leftPosition, m_Height - iTextHeight);
  } else {
    CFX_Matrix affine_matrix1(1.0, 0.0, 0.0, -1.0,
                              (FX_FLOAT)leftPosition * m_outputHScale,
                              (FX_FLOAT)(m_Height - iTextHeight + iFontSize));
    if (matrix) {
      affine_matrix1.Concat(*matrix);
    }
    device->DrawNormalText(
        iLen, pCharPos + 1, m_pFont, CFX_GEModule::Get()->GetFontCache(),
        (FX_FLOAT)iFontSize, &affine_matrix1, m_fontColor, FXTEXT_CLEARTYPE);
  }
  tempStr = str.Mid(6, 5);
  iLen = tempStr.GetLength();
  CalcTextInfo(tempStr, pCharPos + 6, m_pFont, strWidth, iFontSize, blank);
  if (pOutBitmap) {
    FX_RECT rect2(0, 0, (int)strWidth, iTextHeight);
    ge.FillRect(&rect2, m_backgroundColor);
    ge.DrawNormalText(iLen, pCharPos + 6, m_pFont,
                      CFX_GEModule::Get()->GetFontCache(), (FX_FLOAT)iFontSize,
                      &affine_matrix, m_fontColor, FXTEXT_CLEARTYPE);
    geBitmap.SetDIBits(ge.GetBitmap(), leftPosition + 40 * multiple,
//.........这里部分代码省略.........

static void DrawCoonPatchMeshes(FX_BOOL bTensor,
                                CFX_DIBitmap* pBitmap,
                                CFX_Matrix* pObject2Bitmap,
                                CPDF_Stream* pShadingStream,
                                CPDF_Function** pFuncs,
                                int nFuncs,
                                CPDF_ColorSpace* pCS,
                                int fill_mode,
                                int alpha) {
  ASSERT(pBitmap->GetFormat() == FXDIB_Argb);

  CFX_FxgeDevice device;
  device.Attach(pBitmap);
  CPDF_MeshStream stream;
  if (!stream.Load(pShadingStream, pFuncs, nFuncs, pCS))
    return;
  if (!_CheckCoonTensorPara(stream))
    return;

  CPDF_PatchDrawer patch;
  patch.alpha = alpha;
  patch.pDevice = &device;
  patch.fill_mode = fill_mode;
  patch.path.SetPointCount(13);
  FX_PATHPOINT* pPoints = patch.path.GetPoints();
  pPoints[0].m_Flag = FXPT_MOVETO;
  for (int i = 1; i < 13; i++) {
    pPoints[i].m_Flag = FXPT_BEZIERTO;
  }
  CFX_FloatPoint coords[16];
  for (int i = 0; i < 16; i++) {
    coords[i].Set(0.0f, 0.0f);
  }

  int point_count = bTensor ? 16 : 12;
  while (!stream.m_BitStream.IsEOF()) {
    FX_DWORD flag = stream.GetFlag();
    int iStartPoint = 0, iStartColor = 0, i = 0;
    if (flag) {
      iStartPoint = 4;
      iStartColor = 2;
      CFX_FloatPoint tempCoords[4];
      for (i = 0; i < 4; i++) {
        tempCoords[i] = coords[(flag * 3 + i) % 12];
      }
      FXSYS_memcpy(coords, tempCoords, sizeof(CFX_FloatPoint) * 4);
      Coon_Color tempColors[2];
      tempColors[0] = patch.patch_colors[flag];
      tempColors[1] = patch.patch_colors[(flag + 1) % 4];
      FXSYS_memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2);
    }
    for (i = iStartPoint; i < point_count; i++) {
      stream.GetCoords(coords[i].x, coords[i].y);
      pObject2Bitmap->Transform(coords[i].x, coords[i].y);
    }
    for (i = iStartColor; i < 4; i++) {
      FX_FLOAT r = 0.0f, g = 0.0f, b = 0.0f;
      stream.GetColor(r, g, b);
      patch.patch_colors[i].comp[0] = (int32_t)(r * 255);
      patch.patch_colors[i].comp[1] = (int32_t)(g * 255);
      patch.patch_colors[i].comp[2] = (int32_t)(b * 255);
    }
    CFX_FloatRect bbox = CFX_FloatRect::GetBBox(coords, point_count);
    if (bbox.right <= 0 || bbox.left >= (FX_FLOAT)pBitmap->GetWidth() ||
        bbox.top <= 0 || bbox.bottom >= (FX_FLOAT)pBitmap->GetHeight()) {
      continue;
    }
    Coon_Bezier C1, C2, D1, D2;
    C1.FromPoints(coords[0].x, coords[0].y, coords[11].x, coords[11].y,
                  coords[10].x, coords[10].y, coords[9].x, coords[9].y);
    C2.FromPoints(coords[3].x, coords[3].y, coords[4].x, coords[4].y,
                  coords[5].x, coords[5].y, coords[6].x, coords[6].y);
    D1.FromPoints(coords[0].x, coords[0].y, coords[1].x, coords[1].y,
                  coords[2].x, coords[2].y, coords[3].x, coords[3].y);
    D2.FromPoints(coords[9].x, coords[9].y, coords[8].x, coords[8].y,
                  coords[7].x, coords[7].y, coords[6].x, coords[6].y);
    patch.Draw(1, 1, 0, 0, C1, C2, D1, D2);
  }
}