本文整理汇总了C++中CFX_DIBitmap::LoadChannel方法的典型用法代码示例。如果您正苦于以下问题：C++ CFX_DIBitmap::LoadChannel方法的具体用法？C++ CFX_DIBitmap::LoadChannel怎么用？C++ CFX_DIBitmap::LoadChannel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CFX_DIBitmap的用法示例。
在下文中一共展示了CFX_DIBitmap::LoadChannel方法的1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: DrawShading
void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern,
CFX_Matrix* pMatrix,
FX_RECT& clip_rect,
int alpha,
FX_BOOL bAlphaMode) {
CPDF_Function** pFuncs = pPattern->m_pFunctions;
int nFuncs = pPattern->m_nFuncs;
CPDF_Dictionary* pDict = pPattern->m_pShadingObj->GetDict();
CPDF_ColorSpace* pColorSpace = pPattern->m_pCS;
if (!pColorSpace) {
return;
}
FX_ARGB background = 0;
if (!pPattern->m_bShadingObj &&
pPattern->m_pShadingObj->GetDict()->KeyExist("Background")) {
CPDF_Array* pBackColor =
pPattern->m_pShadingObj->GetDict()->GetArray("Background");
if (pBackColor &&
pBackColor->GetCount() >= (FX_DWORD)pColorSpace->CountComponents()) {
CFX_FixedBufGrow<FX_FLOAT, 16> comps(pColorSpace->CountComponents());
for (int i = 0; i < pColorSpace->CountComponents(); i++) {
comps[i] = pBackColor->GetNumber(i);
}
FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
pColorSpace->GetRGB(comps, R, G, B);
background = ArgbEncode(255, (int32_t)(R * 255), (int32_t)(G * 255),
(int32_t)(B * 255));
}
}
if (pDict->KeyExist("BBox")) {
CFX_FloatRect rect = pDict->GetRect("BBox");
rect.Transform(pMatrix);
clip_rect.Intersect(rect.GetOutterRect());
}
CPDF_DeviceBuffer buffer;
buffer.Initialize(m_pContext, m_pDevice, &clip_rect, m_pCurObj, 150);
CFX_Matrix FinalMatrix = *pMatrix;
FinalMatrix.Concat(*buffer.GetMatrix());
CFX_DIBitmap* pBitmap = buffer.GetBitmap();
if (!pBitmap->GetBuffer()) {
return;
}
pBitmap->Clear(background);
int fill_mode = m_Options.m_Flags;
switch (pPattern->m_ShadingType) {
case kInvalidShading:
case kMaxShading:
return;
case kFunctionBasedShading:
DrawFuncShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs, pColorSpace,
alpha);
break;
case kAxialShading:
DrawAxialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs,
pColorSpace, alpha);
break;
case kRadialShading:
DrawRadialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs,
pColorSpace, alpha);
break;
case kFreeFormGouraudTriangleMeshShading: {
DrawFreeGouraudShading(pBitmap, &FinalMatrix,
ToStream(pPattern->m_pShadingObj), pFuncs, nFuncs,
pColorSpace, alpha);
} break;
case kLatticeFormGouraudTriangleMeshShading: {
DrawLatticeGouraudShading(pBitmap, &FinalMatrix,
ToStream(pPattern->m_pShadingObj), pFuncs,
nFuncs, pColorSpace, alpha);
} break;
case kCoonsPatchMeshShading:
case kTensorProductPatchMeshShading: {
DrawCoonPatchMeshes(
pPattern->m_ShadingType == kTensorProductPatchMeshShading, pBitmap,
&FinalMatrix, ToStream(pPattern->m_pShadingObj), pFuncs, nFuncs,
pColorSpace, fill_mode, alpha);
} break;
}
if (bAlphaMode) {
pBitmap->LoadChannel(FXDIB_Red, pBitmap, FXDIB_Alpha);
}
if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) {
pBitmap->ConvertColorScale(m_Options.m_ForeColor, m_Options.m_BackColor);
}
buffer.OutputToDevice();
}