/*!
\brief Sets the ServerFont instance to whatever font is specified
\param fontID the combination of family and style ID numbers
\return B_OK if successful, B_ERROR if not
*/
status_t
ServerFont::SetFamilyAndStyle(uint32 fontID)
{
uint16 style = fontID & 0xFFFF;
uint16 family = (fontID & 0xFFFF0000) >> 16;
return SetFamilyAndStyle(family, style);
}
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;
}
