ftc_image_node_init( FTC_ImageNode inode,
FTC_GlyphQuery gquery,
FTC_Cache cache )
{
FTC_ImageFamily ifam = FTC_IMAGE_FAMILY( gquery->query.family );
FT_Error error;
FT_Face face;
FT_Size size;
/* initialize its inner fields */
ftc_glyph_node_init( FTC_GLYPH_NODE( inode ),
gquery->gindex,
FTC_GLYPH_FAMILY( ifam ) );
/* we will now load the glyph image */
error = FTC_Manager_Lookup_Size( FTC_FAMILY( ifam )->cache->manager,
&ifam->type.font,
&face, &size );
if ( !error )
{
FT_UInt gindex = FTC_GLYPH_NODE_GINDEX( inode );
error = FT_Load_Glyph( face, gindex, ifam->type.flags );
if ( !error )
{
if ( face->glyph->format == FT_GLYPH_FORMAT_BITMAP ||
face->glyph->format == FT_GLYPH_FORMAT_OUTLINE )
{
/* ok, copy it */
FT_Glyph glyph;
error = FT_Get_Glyph( face->glyph, &glyph );
if ( !error )
{
inode->glyph = glyph;
goto Exit;
}
}
else
error = FTC_Err_Invalid_Argument;
}
}
/* in case of error */
ftc_glyph_node_done( FTC_GLYPH_NODE(inode), cache );
Exit:
return error;
}
ftc_sbit_node_done( FTC_SBitNode snode,
FTC_Cache cache )
{
FTC_SBit sbit = snode->sbits;
FT_UInt count = FTC_GLYPH_NODE( snode )->item_count;
FT_Memory memory = cache->memory;
for ( ; count > 0; sbit++, count-- )
FT_FREE( sbit->buffer );
ftc_glyph_node_done( FTC_GLYPH_NODE( snode ), cache );
}
ftc_image_node_done( FTC_ImageNode inode,
FTC_Cache cache )
{
if ( inode->glyph )
{
FT_Done_Glyph( inode->glyph );
inode->glyph = NULL;
}
ftc_glyph_node_done( FTC_GLYPH_NODE( inode ), cache );
}
static FT_Error
ftc_sbit_node_load( FTC_SBitNode snode,
FTC_Manager manager,
FTC_SBitFamily sfam,
FT_UInt gindex,
FT_ULong *asize )
{
FT_Error error;
FTC_GlyphNode gnode = FTC_GLYPH_NODE( snode );
FT_Memory memory;
FT_Face face;
FT_Size size;
FTC_SBit sbit;
if ( gindex < (FT_UInt)gnode->item_start ||
gindex >= (FT_UInt)gnode->item_start + gnode->item_count )
{
FT_ERROR(( "ftc_sbit_node_load: invalid glyph index" ));
return FTC_Err_Invalid_Argument;
}
memory = manager->library->memory;
sbit = snode->sbits + ( gindex - gnode->item_start );
error = FTC_Manager_Lookup_Size( manager, &sfam->type.font,
&face, &size );
if ( !error )
{
/* by default, indicates a `missing' glyph */
sbit->buffer = 0;
error = FT_Load_Glyph( face, gindex, sfam->type.flags | FT_LOAD_RENDER );
if ( !error )
{
FT_Int temp;
FT_GlyphSlot slot = face->glyph;
FT_Bitmap* bitmap = &slot->bitmap;
FT_Int xadvance, yadvance;
/* check that our values fit into 8-bit containers! */
/* If this is not the case, our bitmap is too large */
/* and we will leave it as `missing' with sbit.buffer = 0 */
#define CHECK_CHAR( d ) ( temp = (FT_Char)d, temp == d )
#define CHECK_BYTE( d ) ( temp = (FT_Byte)d, temp == d )
/* XXX: FIXME: add support for vertical layouts maybe */
/* horizontal advance in pixels */
xadvance = ( slot->metrics.horiAdvance + 32 ) >> 6;
yadvance = ( slot->metrics.vertAdvance + 32 ) >> 6;
if ( CHECK_BYTE( bitmap->rows ) &&
CHECK_BYTE( bitmap->width ) &&
CHECK_CHAR( bitmap->pitch ) &&
CHECK_CHAR( slot->bitmap_left ) &&
CHECK_CHAR( slot->bitmap_top ) &&
CHECK_CHAR( xadvance ) &&
CHECK_CHAR( yadvance ) )
{
sbit->width = (FT_Byte)bitmap->width;
sbit->height = (FT_Byte)bitmap->rows;
sbit->pitch = (FT_Char)bitmap->pitch;
sbit->left = (FT_Char)slot->bitmap_left;
sbit->top = (FT_Char)slot->bitmap_top;
sbit->xadvance = (FT_Char)xadvance;
sbit->yadvance = (FT_Char)yadvance;
sbit->format = (FT_Byte)bitmap->pixel_mode;
sbit->max_grays = (FT_Byte)(bitmap->num_grays - 1);
#if 0 /* this doesn't work well with embedded bitmaps */
/* grab the bitmap when possible - this is a hack! */
if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
{
slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
sbit->buffer = bitmap->buffer;
}
else
#endif
{
/* copy the bitmap into a new buffer -- ignore error */
error = ftc_sbit_copy_bitmap( sbit, bitmap, memory );
}
/* now, compute size */
if ( asize )
*asize = ABS( sbit->pitch ) * sbit->height;
} /* glyph dimensions ok */
} /* glyph loading successful */
