AnchorFormat2.hh (1518B)
1 #ifndef OT_LAYOUT_GPOS_ANCHORFORMAT2_HH 2 #define OT_LAYOUT_GPOS_ANCHORFORMAT2_HH 3 4 namespace OT { 5 namespace Layout { 6 namespace GPOS_impl { 7 8 struct AnchorFormat2 9 { 10 11 protected: 12 HBUINT16 format; /* Format identifier--format = 2 */ 13 FWORD xCoordinate; /* Horizontal value--in design units */ 14 FWORD yCoordinate; /* Vertical value--in design units */ 15 HBUINT16 anchorPoint; /* Index to glyph contour point */ 16 public: 17 DEFINE_SIZE_STATIC (8); 18 19 bool sanitize (hb_sanitize_context_t *c) const 20 { 21 TRACE_SANITIZE (this); 22 return_trace (c->check_struct (this)); 23 } 24 25 void get_anchor (hb_ot_apply_context_t *c, hb_codepoint_t glyph_id, 26 float *x, float *y) const 27 { 28 hb_font_t *font = c->font; 29 30 #ifdef HB_NO_HINTING 31 *x = font->em_fscale_x (xCoordinate); 32 *y = font->em_fscale_y (yCoordinate); 33 return; 34 #endif 35 36 unsigned int x_ppem = font->x_ppem; 37 unsigned int y_ppem = font->y_ppem; 38 hb_position_t cx = 0, cy = 0; 39 bool ret; 40 41 ret = (x_ppem || y_ppem) && 42 font->get_glyph_contour_point_for_origin (glyph_id, anchorPoint, HB_DIRECTION_LTR, &cx, &cy); 43 *x = ret && x_ppem ? cx : font->em_fscale_x (xCoordinate); 44 *y = ret && y_ppem ? cy : font->em_fscale_y (yCoordinate); 45 } 46 47 AnchorFormat2* copy (hb_serialize_context_t *c) const 48 { 49 TRACE_SERIALIZE (this); 50 return_trace (c->embed<AnchorFormat2> (this)); 51 } 52 }; 53 54 } 55 } 56 } 57 58 #endif // OT_LAYOUT_GPOS_ANCHORFORMAT2_HH