status_t
FFont::Unflatten(type_code c, const void *buf, ssize_t size)
{
if( c != FONT_TYPE ) return B_BAD_TYPE;
// Make sure buffer contains all data. If we later want
// to add new attributes, we can make a more sophisticated
// check to allow partial structures.
if( size < sizeof(flat_font_data) ) return B_BAD_VALUE;
// Easy reference to the buffer.
flat_font_data* fdat = (flat_font_data*)buf;
// Initialize from default font, just in case.
*this = FFont();
// Set up family and style for font.
SetFamilyAndStyle(fdat->family,fdat->style);
// This is used as a temporary when byte-swapping floats.
// Note that this assumes a float is 4 bytes.
union {
uint32 aslong;
float asfloat;
} swap;
// Byte-swap size, shear, and rotation out of the flattened
// structure. This is written for clarity more than speed,
// since the additional overhead will be entirely subsumed
// by everything else going on.
swap.asfloat = fdat->size;
swap.aslong = ntohl(swap.aslong);
SetSize(swap.asfloat);
swap.asfloat = fdat->shear;
swap.aslong = ntohl(swap.aslong);
SetShear(swap.asfloat);
swap.asfloat = fdat->rotation;
swap.aslong = ntohl(swap.aslong);
SetRotation(swap.asfloat);
// Byte-swap the remaining data from the flattened structure.
SetFlags(ntohl(fdat->flags));
SetFace(ntohs(fdat->face));
SetSpacing(fdat->spacing);
SetEncoding(fdat->encoding);
SetMask(ntohl(fdat->mask));
return B_NO_ERROR;
}
void
View3DAttributes::SetFromNode(DataNode *parentNode)
{
if(parentNode == 0)
return;
DataNode *searchNode = parentNode->GetNode("View3DAttributes");
if(searchNode == 0)
return;
DataNode *node;
if((node = searchNode->GetNode("viewNormal")) != 0)
SetViewNormal(node->AsDoubleArray());
if((node = searchNode->GetNode("focus")) != 0)
SetFocus(node->AsDoubleArray());
if((node = searchNode->GetNode("viewUp")) != 0)
SetViewUp(node->AsDoubleArray());
if((node = searchNode->GetNode("viewAngle")) != 0)
SetViewAngle(node->AsDouble());
if((node = searchNode->GetNode("parallelScale")) != 0)
SetParallelScale(node->AsDouble());
if((node = searchNode->GetNode("nearPlane")) != 0)
SetNearPlane(node->AsDouble());
if((node = searchNode->GetNode("farPlane")) != 0)
SetFarPlane(node->AsDouble());
if((node = searchNode->GetNode("imagePan")) != 0)
SetImagePan(node->AsDoubleArray());
if((node = searchNode->GetNode("imageZoom")) != 0)
SetImageZoom(node->AsDouble());
if((node = searchNode->GetNode("perspective")) != 0)
SetPerspective(node->AsBool());
if((node = searchNode->GetNode("eyeAngle")) != 0)
SetEyeAngle(node->AsDouble());
if((node = searchNode->GetNode("centerOfRotationSet")) != 0)
SetCenterOfRotationSet(node->AsBool());
if((node = searchNode->GetNode("centerOfRotation")) != 0)
SetCenterOfRotation(node->AsDoubleArray());
if((node = searchNode->GetNode("axis3DScaleFlag")) != 0)
SetAxis3DScaleFlag(node->AsBool());
if((node = searchNode->GetNode("axis3DScales")) != 0)
SetAxis3DScales(node->AsDoubleArray());
if((node = searchNode->GetNode("shear")) != 0)
SetShear(node->AsDoubleArray());
if((node = searchNode->GetNode("windowValid")) != 0)
SetWindowValid(node->AsBool());
}
