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#include "pshglob.h"
/* "simple" ps hinter globals management, inspired from the new auto-hinter */
FT_LOCAL void
psh_globals_init( PSH_Globals globals,
FT_Memory memory )
{
memset( globals, 0, sizeof(*globals) );
globals->memory = memory;
globals->x_scale = 0x10000L;
globals->y_scale = 0x10000L;
}
/* reset the widths/heights table */
static FT_Error
psh_globals_reset_widths( PSH_Globals globals,
FT_UInt direction,
PS_Globals_Widths widths )
{
PSH_Dimension dim = &globals->dim[direction];
FT_Memory memory = globals->memory;
FT_Error error = 0;
/* simple copy of the original widths values - no sorting */
{
FT_UInt count = widths->count;
PSH_Width write = dim->std.widths;
FT_Int16* read = widths->widths;
dim->std.count = count;
for ( ; count > 0; count-- )
{
write->org = read[0];
write++;
read++;
}
}
return error;
}
/* scale the widths/heights table */
static void
psh_globals_scale_widths( PSH_Globals globals,
FT_UInt direction )
{
PSH_Widths std = &globals->std[direction];
FT_UInt count = std->count;
PSH_Width width = std->widths;
FT_Fixed scale = globals->scale[direction];
for ( ; count > 0; count--, width++ )
{
width->cur = FT_MulFix( width->org, scale );
width->fit = FT_RoundFix( width->cur );
}
}
/* reset the blues table */
static FT_Error
psh_globals_reset_blues( PSH_Globals globals,
PS_Globals_Blues blues )
{
FT_Error error = 0;
FT_Memory memory = globals->memory;
if ( !FT_REALLOC_ARRAY( globals->blues.zones, globals->blues.count,
blues->count, PSH_Blue_ZoneRec ) )
{
FT_UInt count = 0;
globals->blyes.count = blues->count;
/* first of all, build a sorted table of blue zones */
{
FT_Int16* read = blue->zones;
FT_UInt n, i, j;
FT_Pos reference, overshoot, delta;
for ( n = 0; n < blues->count; n++, read++ )
{
PSH_Blue_Zone zone;
/* read new blue zone entry, find top and bottom coordinates */
reference = read[0];
overshoot = read[1];
delta = overshoot - reference;
/* now, insert in the blue zone table, sorted by reference position */
zone = globals->blues.zones;
for ( i = 0; i < count; i++, zone++ )
{
if ( reference > zone->org_ref )
break;
if ( reference == zone->org_ref )
{
/* on the same reference coordinate, place bottom zones */
/* before top zones.. */
if ( delta < 0 || zone->org_delta >= 0 )
break;
}
for ( j = count - i; j > 0; j-- )
zone[j+1] = zone[j];
zone->org_ref = reference;
zone->org_delta = delta;
count++;
}
}
/* now, get rid of blue zones located on the same reference position */
/* (only keep the largest zone).. */
{
PSH_Blue_Zone zone, limit;
zone = globals->blues.zones;
limit = zone + count;
for ( ; zone+1 < limit; zone++ )
{
if ( zone[0].org_ref == zone[1].org_ref )
{
FT_Int delta0 = zone[0].org_delta;
FT_Int delta1 = zone[1].org_delta;
/* these two zones are located on the same reference coordinate */
/* we need to merge them when they're in the same direction.. */
if ( ( delta0 < 0 ) ^ ( delta1 < 0 ) ) == 0 )
{
/* ok, take the biggest one */
if ( delta0 < 0 )
{
if ( delta1 < delta0 )
delta0 = delta1;
}
else
{
if ( delta1 > delta0 )
delta0 = delta1;
}
zone[0].org_delta = delta0;
{
PSH_Blue_Zone cur = zone+1;
FT_UInt count2 = limit - cur;
for ( ; count2 > 0; count2--, cur++ )
{
cur[0].org_ref = cur[1].org_ref;
cur[0].org_delta = cur[1].org_delta;
}
}
count--;
limit--;
}
}
}
}
globals->blues.count = count;
globals->blues.org_shift = blues->shift;
globals->blues.org_fuzz = blues->fuzz;
}
return error;
}
static void
psh_globals_scale_blues( PSH_Globals globals,
PS_Globals_Blues blues )
{
FT_Fixed y_scale = globals->scale[1];
FT_Fixed y_delta = globals->delta[1];
FT_Pos prev_top;
PSH_Blue_Zone zone, prev;
FT_UInt count;
zone = globals->blues.zones;
prev = 0;
prev_top = 0;
for ( count = globals->blues.count; count > 0; count-- )
{
FT_Pos ref, delta, top, bottom;
ref = FT_MulFix( zone->org_ref, y_scale ) + y_delta;
delta = FT_MulFix( zone->org_delta, y_scale );
ref = (ref+32) & -64;
if ( delta < 0 )
{
top = ref;
bottom = ref + delta;
}
else
{
bottom = ref;
top = ref + delta;
}
zone->cur_ref = ref;
zone->cur_delta = delta;
zone->cur_top = top;
zone->cur_bottom = bottom;
if
prev = zone;
zone++;
}
/* XXXX: test overshoot supression !! */
}
FT_LOCAL FT_Error
psh_globals_reset( PSH_Globals globals,
T1_Fitter_Globals public_globals )
{
psh_globals_reset_widths( globals, 0, &public_globals->horizontal );
psh_globals_scale_widths( globals, 0 );
psh_globals_reset_widths( globals, 1, &public_globals->vertical );
psh_globals_scale_widths( globals, 1 );
psh_globals_reset_blues( globals, public_globals );
psh_globals_scale_blues( globals );
}
FT_LOCAL void
psh_globals_set_scale( PSH_Globals globals,
FT_Fixed x_scale,
FT_Fixed x_delta,
FT_Fixed y_scale,
FT_Fixed y_delta )
{
FT_Memory memory = globals->memory;
if ( x_scale != globals->scale[0] ||
y_scale != globals->scale[1] ||
x_delta != globals->delta[0] ||
y_delta != globals->delta[1] )
{
globals->scale[0] = x_scale;
globals->scale[1] = y_scale;
globals->delta[0] = x_delta;
globals->delta[1] = y_delta;
psh_globals_scale_widths( globals, 0 );
psh_globals_scale_widths( globals, 1 );
psh_globals_scale_blues ( globals );
}
}
FT_LOCAL void
psh_globals_done( PSH_Globals globals )
{
if (globals)
{
FT_Memory memory = globals->memory;
FT_FREE( globals->std[0].widths );
globals->std[0].count = 0;
FT_FREE( globals->std[1].widths );
globals->std[1].count = 0;
FT_FREE( globals->blues.zones );
globals->blues.count = 0;
}
}
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