1 /***************************************************************************/
2 /* */
3 /* pshglob.c */
4 /* */
5 /* PostScript hinter global hinting management (body). */
6 /* Inspired by the new auto-hinter module. */
7 /* */
8 /* Copyright 2001-2018 by */
9 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
10 /* */
11 /* This file is part of the FreeType project, and may only be used */
12 /* modified and distributed under the terms of the FreeType project */
13 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
14 /* this file you indicate that you have read the license and */
15 /* understand and accept it fully. */
16 /* */
17 /***************************************************************************/
18
19
20 #include <ft2build.h>
21 #include FT_FREETYPE_H
22 #include FT_INTERNAL_OBJECTS_H
23 #include "pshglob.h"
24
25 #ifdef DEBUG_HINTER
26 PSH_Globals ps_debug_globals = NULL;
27 #endif
28
29
30 /*************************************************************************/
31 /*************************************************************************/
32 /***** *****/
33 /***** STANDARD WIDTHS *****/
34 /***** *****/
35 /*************************************************************************/
36 /*************************************************************************/
37
38
39 /* scale the widths/heights table */
40 static void
41 psh_globals_scale_widths( PSH_Globals globals,
42 FT_UInt direction )
551 PSH_Alignment alignment )
552 {
553 PSH_Blue_Table table;
554 FT_UInt count;
555 FT_Pos delta;
556 PSH_Blue_Zone zone;
557 FT_Int no_shoots;
558
559
560 alignment->align = PSH_BLUE_ALIGN_NONE;
561
562 no_shoots = blues->no_overshoots;
563
564 /* look up stem top in top zones table */
565 table = &blues->normal_top;
566 count = table->count;
567 zone = table->zones;
568
569 for ( ; count > 0; count--, zone++ )
570 {
571 delta = stem_top - zone->org_bottom;
572 if ( delta < -blues->blue_fuzz )
573 break;
574
575 if ( stem_top <= zone->org_top + blues->blue_fuzz )
576 {
577 if ( no_shoots || delta <= blues->blue_threshold )
578 {
579 alignment->align |= PSH_BLUE_ALIGN_TOP;
580 alignment->align_top = zone->cur_ref;
581 }
582 break;
583 }
584 }
585
586 /* look up stem bottom in bottom zones table */
587 table = &blues->normal_bottom;
588 count = table->count;
589 zone = table->zones + count-1;
590
591 for ( ; count > 0; count--, zone-- )
592 {
593 delta = zone->org_top - stem_bot;
594 if ( delta < -blues->blue_fuzz )
595 break;
596
597 if ( stem_bot >= zone->org_bottom - blues->blue_fuzz )
598 {
599 if ( no_shoots || delta < blues->blue_threshold )
600 {
601 alignment->align |= PSH_BLUE_ALIGN_BOT;
602 alignment->align_bot = zone->cur_ref;
603 }
604 break;
605 }
606 }
607 }
608
609
610 /*************************************************************************/
611 /*************************************************************************/
612 /***** *****/
613 /***** GLOBAL HINTS *****/
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1 /****************************************************************************
2 *
3 * pshglob.c
4 *
5 * PostScript hinter global hinting management (body).
6 * Inspired by the new auto-hinter module.
7 *
8 * Copyright (C) 2001-2019 by
9 * David Turner, Robert Wilhelm, and Werner Lemberg.
10 *
11 * This file is part of the FreeType project, and may only be used
12 * modified and distributed under the terms of the FreeType project
13 * license, LICENSE.TXT. By continuing to use, modify, or distribute
14 * this file you indicate that you have read the license and
15 * understand and accept it fully.
16 *
17 */
18
19
20 #include <ft2build.h>
21 #include FT_FREETYPE_H
22 #include FT_INTERNAL_OBJECTS_H
23 #include FT_INTERNAL_CALC_H
24 #include "pshglob.h"
25
26 #ifdef DEBUG_HINTER
27 PSH_Globals ps_debug_globals = NULL;
28 #endif
29
30
31 /*************************************************************************/
32 /*************************************************************************/
33 /***** *****/
34 /***** STANDARD WIDTHS *****/
35 /***** *****/
36 /*************************************************************************/
37 /*************************************************************************/
38
39
40 /* scale the widths/heights table */
41 static void
42 psh_globals_scale_widths( PSH_Globals globals,
43 FT_UInt direction )
552 PSH_Alignment alignment )
553 {
554 PSH_Blue_Table table;
555 FT_UInt count;
556 FT_Pos delta;
557 PSH_Blue_Zone zone;
558 FT_Int no_shoots;
559
560
561 alignment->align = PSH_BLUE_ALIGN_NONE;
562
563 no_shoots = blues->no_overshoots;
564
565 /* look up stem top in top zones table */
566 table = &blues->normal_top;
567 count = table->count;
568 zone = table->zones;
569
570 for ( ; count > 0; count--, zone++ )
571 {
572 delta = SUB_LONG( stem_top, zone->org_bottom );
573 if ( delta < -blues->blue_fuzz )
574 break;
575
576 if ( stem_top <= zone->org_top + blues->blue_fuzz )
577 {
578 if ( no_shoots || delta <= blues->blue_threshold )
579 {
580 alignment->align |= PSH_BLUE_ALIGN_TOP;
581 alignment->align_top = zone->cur_ref;
582 }
583 break;
584 }
585 }
586
587 /* look up stem bottom in bottom zones table */
588 table = &blues->normal_bottom;
589 count = table->count;
590 zone = table->zones + count-1;
591
592 for ( ; count > 0; count--, zone-- )
593 {
594 delta = SUB_LONG( zone->org_top, stem_bot );
595 if ( delta < -blues->blue_fuzz )
596 break;
597
598 if ( stem_bot >= zone->org_bottom - blues->blue_fuzz )
599 {
600 if ( no_shoots || delta < blues->blue_threshold )
601 {
602 alignment->align |= PSH_BLUE_ALIGN_BOT;
603 alignment->align_bot = zone->cur_ref;
604 }
605 break;
606 }
607 }
608 }
609
610
611 /*************************************************************************/
612 /*************************************************************************/
613 /***** *****/
614 /***** GLOBAL HINTS *****/
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