16 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
17 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * DAMAGE.
19 *
20 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
21 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
22 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
23 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
24 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
25 *
26 * Red Hat Author(s): Behdad Esfahbod
27 * Google Author(s): Behdad Esfahbod
28 */
29
30 #include "hb-private.hh"
31
32 #include "hb-ft.h"
33
34 #include "hb-font-private.hh"
35
36 #include FT_ADVANCES_H
37 #include FT_TRUETYPE_TABLES_H
38
39
40
41 #ifndef HB_DEBUG_FT
42 #define HB_DEBUG_FT (HB_DEBUG+0)
43 #endif
44
45
46 /* TODO:
47 *
48 * In general, this file does a fine job of what it's supposed to do.
49 * There are, however, things that need more work:
50 *
51 * - I remember seeing FT_Get_Advance() without the NO_HINTING flag to be buggy.
52 * Have not investigated.
53 *
54 * - FreeType works in 26.6 mode. Clients can decide to use that mode, and everything
55 * would work fine. However, we also abuse this API for performing in font-space,
56 * but don't pass the correct flags to FreeType. We just abuse the no-hinting mode
589 * @ft_face: (destroy destroy) (scope notified):
590 * @destroy:
591 *
592 *
593 *
594 * Return value: (transfer full):
595 * Since: 0.9.2
596 **/
597 hb_font_t *
598 hb_ft_font_create (FT_Face ft_face,
599 hb_destroy_func_t destroy)
600 {
601 hb_font_t *font;
602 hb_face_t *face;
603
604 face = hb_ft_face_create (ft_face, destroy);
605 font = hb_font_create (face);
606 hb_face_destroy (face);
607 _hb_ft_font_set_funcs (font, ft_face, false);
608 hb_font_set_scale (font,
609 (int) (((uint64_t) ft_face->size->metrics.x_scale * (uint64_t) ft_face->units_per_EM + (1<<15)) >> 16),
610 (int) (((uint64_t) ft_face->size->metrics.y_scale * (uint64_t) ft_face->units_per_EM + (1<<15)) >> 16));
611 #if 0 /* hb-ft works in no-hinting model */
612 hb_font_set_ppem (font,
613 ft_face->size->metrics.x_ppem,
614 ft_face->size->metrics.y_ppem);
615 #endif
616
617 return font;
618 }
619
620 /**
621 * hb_ft_font_create_referenced:
622 * @ft_face:
623 *
624 *
625 *
626 * Return value: (transfer full):
627 * Since: 0.9.38
628 **/
629 hb_font_t *
630 hb_ft_font_create_referenced (FT_Face ft_face)
631 {
632 FT_Reference_Face (ft_face);
633 return hb_ft_font_create (ft_face, (hb_destroy_func_t) _hb_ft_face_destroy);
634 }
635
636
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16 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
17 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * DAMAGE.
19 *
20 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
21 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
22 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
23 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
24 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
25 *
26 * Red Hat Author(s): Behdad Esfahbod
27 * Google Author(s): Behdad Esfahbod
28 */
29
30 #include "hb-private.hh"
31
32 #include "hb-ft.h"
33
34 #include "hb-font-private.hh"
35
36 #include "hb-cache-private.hh" // Maybe use in the future?
37
38 #include FT_ADVANCES_H
39 #include FT_MULTIPLE_MASTERS_H
40 #include FT_TRUETYPE_TABLES_H
41
42
43
44 #ifndef HB_DEBUG_FT
45 #define HB_DEBUG_FT (HB_DEBUG+0)
46 #endif
47
48
49 /* TODO:
50 *
51 * In general, this file does a fine job of what it's supposed to do.
52 * There are, however, things that need more work:
53 *
54 * - I remember seeing FT_Get_Advance() without the NO_HINTING flag to be buggy.
55 * Have not investigated.
56 *
57 * - FreeType works in 26.6 mode. Clients can decide to use that mode, and everything
58 * would work fine. However, we also abuse this API for performing in font-space,
59 * but don't pass the correct flags to FreeType. We just abuse the no-hinting mode
592 * @ft_face: (destroy destroy) (scope notified):
593 * @destroy:
594 *
595 *
596 *
597 * Return value: (transfer full):
598 * Since: 0.9.2
599 **/
600 hb_font_t *
601 hb_ft_font_create (FT_Face ft_face,
602 hb_destroy_func_t destroy)
603 {
604 hb_font_t *font;
605 hb_face_t *face;
606
607 face = hb_ft_face_create (ft_face, destroy);
608 font = hb_font_create (face);
609 hb_face_destroy (face);
610 _hb_ft_font_set_funcs (font, ft_face, false);
611 hb_font_set_scale (font,
612 (int) (((uint64_t) ft_face->size->metrics.x_scale * (uint64_t) ft_face->units_per_EM + (1u<<15)) >> 16),
613 (int) (((uint64_t) ft_face->size->metrics.y_scale * (uint64_t) ft_face->units_per_EM + (1u<<15)) >> 16));
614 #if 0 /* hb-ft works in no-hinting model */
615 hb_font_set_ppem (font,
616 ft_face->size->metrics.x_ppem,
617 ft_face->size->metrics.y_ppem);
618 #endif
619
620 #ifdef HAVE_FT_GET_VAR_BLEND_COORDINATES
621 FT_MM_Var *mm_var = NULL;
622 if (!FT_Get_MM_Var (ft_face, &mm_var))
623 {
624 FT_Fixed coords[mm_var->num_axis];
625 int hbCoords[mm_var->num_axis];
626 if (!FT_Get_Var_Blend_Coordinates (ft_face, mm_var->num_axis, coords))
627 {
628 for (int i = 0; i < mm_var->num_axis; ++i)
629 hbCoords[i] = coords[i] >> 2;
630
631 hb_font_set_var_coords_normalized (font, hbCoords, mm_var->num_axis);
632 }
633 }
634 free (mm_var);
635 #endif
636
637 return font;
638 }
639
640 /**
641 * hb_ft_font_create_referenced:
642 * @ft_face:
643 *
644 *
645 *
646 * Return value: (transfer full):
647 * Since: 0.9.38
648 **/
649 hb_font_t *
650 hb_ft_font_create_referenced (FT_Face ft_face)
651 {
652 FT_Reference_Face (ft_face);
653 return hb_ft_font_create (ft_face, (hb_destroy_func_t) _hb_ft_face_destroy);
654 }
655
656
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