/* fuzz-expands the zones as well. */
static void
psh_blues_set_zones( PSH_Blues target,
FT_UInt count,
FT_Short* blues,
FT_UInt count_others,
FT_Short* other_blues,
FT_Int fuzz,
FT_Int family )
{
PSH_Blue_Table top_table, bot_table;
FT_Int count_top, count_bot;
if ( family )
{
top_table = &target->family_top;
bot_table = &target->family_bottom;
}
else
{
top_table = &target->normal_top;
bot_table = &target->normal_bottom;
}
/* read the input blue zones, and build two sorted tables */
/* (one for the top zones, the other for the bottom zones) */
top_table->count = 0;
bot_table->count = 0;
/* first, the blues */
psh_blues_set_zones_0( target, 0,
count, blues, top_table, bot_table );
psh_blues_set_zones_0( target, 1,
count_others, other_blues, top_table, bot_table );
count_top = top_table->count;
count_bot = bot_table->count;
/* sanitize top table */
if ( count_top > 0 )
{
PSH_Blue_Zone zone = top_table->zones;
for ( count = count_top; count > 0; count--, zone++ )
{
FT_Int delta;
if ( count > 1 )
{
delta = zone[1].org_ref - zone[0].org_ref;
if ( zone->org_delta > delta )
zone->org_delta = delta;
}
zone->org_bottom = zone->org_ref;
zone->org_top = zone->org_delta + zone->org_ref;
}
}
/* sanitize bottom table */
if ( count_bot > 0 )
{
PSH_Blue_Zone zone = bot_table->zones;
for ( count = count_bot; count > 0; count--, zone++ )
{
FT_Int delta;
if ( count > 1 )
{
delta = zone[0].org_ref - zone[1].org_ref;
if ( zone->org_delta < delta )
zone->org_delta = delta;
}
zone->org_top = zone->org_ref;
zone->org_bottom = zone->org_delta + zone->org_ref;
}
}
/* expand top and bottom tables with blue fuzz */
{
FT_Int dim, top, bot, delta;
PSH_Blue_Zone zone;
zone = top_table->zones;
count = count_top;
for ( dim = 1; dim >= 0; dim-- )
{
if ( count > 0 )
{
/* expand the bottom of the lowest zone normally */
zone->org_bottom -= fuzz;
/* expand the top and bottom of intermediate zones; */
/* checking that the interval is smaller than the fuzz */
top = zone->org_top;
for ( count--; count > 0; count-- )
{
bot = zone[1].org_bottom;
delta = bot - top;
if ( delta < 2 * fuzz )
zone[0].org_top = zone[1].org_bottom = top + delta / 2;
else
{
zone[0].org_top = top + fuzz;
zone[1].org_bottom = bot - fuzz;
}
zone++;
top = zone->org_top;
}
/* expand the top of the highest zone normally */
zone->org_top = top + fuzz;
}
zone = bot_table->zones;
count = count_bot;
}
}
}
/* fuzz-expands the zones as well. */
static void
psh_blues_set_zones( PSH_Blues target,
FT_UInt count,
FT_Short* blues,
FT_UInt count_others,
FT_Short* other_blues,
FT_Int fuzz,
FT_Int family )
{
PSH_Blue_Table top_table, bot_table;
FT_Int count_top, count_bot;
if ( family )
{
top_table = &target->family_top;
bot_table = &target->family_bottom;
}
else
{
top_table = &target->normal_top;
bot_table = &target->normal_bottom;
}
/* read the input blue zones, and build two sorted tables */
/* (one for the top zones, the other for the bottom zones) */
top_table->count = 0;
bot_table->count = 0;
/* first, the blues */
psh_blues_set_zones_0( target, 0,
count, blues, top_table, bot_table );
psh_blues_set_zones_0( target, 1,
count_others, other_blues, top_table, bot_table );
count_top = top_table->count;
count_bot = bot_table->count;
/* sanitize top table */
if ( count_top > 0 )
{
PSH_Blue_Zone zone = top_table->zones;
for ( count = count_top; count > 0; count--, zone++ )
{
FT_Int delta;
if ( count > 1 )
{
delta = zone[1].org_ref - zone[0].org_ref;
if ( zone->org_delta > delta )
zone->org_delta = delta;
}
zone->org_bottom = zone->org_ref;
zone->org_top = zone->org_delta + zone->org_ref;
}
}
/* sanitize bottom table */
if ( count_bot > 0 )
{
PSH_Blue_Zone zone = bot_table->zones;
for ( count = count_bot; count > 0; count--, zone++ )
{
FT_Int delta;
if ( count > 1 )
{
delta = zone[0].org_ref - zone[1].org_ref;
if ( zone->org_delta < delta )
zone->org_delta = delta;
}
zone->org_top = zone->org_ref;
zone->org_bottom = zone->org_delta + zone->org_ref;
// XYQ 2006-3-11: FT PS hinter doesn't process wide zone well (all points shrinked to one horizontal line)
// therefore, we have to do some nasty thing here, because some fonts do give wide bottom zones.
// Our principle is to preserve the bottom line
// TEST DOC: bug#395 csl.pdf letters "y", "j", etc.
if (zone->org_top - zone->org_bottom > 10) {
zone->org_top = zone->org_bottom;
zone->org_delta = 0;
}
}
}
/* expand top and bottom tables with blue fuzz */
{
FT_Int dim, top, bot, delta;
PSH_Blue_Zone zone;
zone = top_table->zones;
count = count_top;
for ( dim = 1; dim >= 0; dim-- )
{
if ( count > 0 )
{
/* expand the bottom of the lowest zone normally */
zone->org_bottom -= fuzz;
/* expand the top and bottom of intermediate zones; */
/* checking that the interval is smaller than the fuzz */
top = zone->org_top;
for ( count--; count > 0; count-- )
{
bot = zone[1].org_bottom;
delta = bot - top;
if ( delta < 2 * fuzz )
zone[0].org_top = zone[1].org_bottom = top + delta / 2;
else
{
zone[0].org_top = top + fuzz;
zone[1].org_bottom = bot - fuzz;
}
zone++;
top = zone->org_top;
}
/* expand the top of the highest zone normally */
zone->org_top = top + fuzz;
}
zone = bot_table->zones;
count = count_bot;
}
}
}