[f40a309] | 1 | /*
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| 2 | =============================================================================
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| 3 | delnote.c -- MIDAS-VII note deletion
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| 4 | Version 16 -- 1988-10-27 -- D.N. Lynx Crowe
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| 5 | =============================================================================
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| 6 | */
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| 7 |
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[b28a12e] | 8 | #include "ram.h"
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[e225e77] | 9 |
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[f40a309] | 10 | #define TO_LFT (TO_BAK + 1)
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| 11 |
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| 12 | /*
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| 13 | =============================================================================
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| 14 | delnote() -- delete a note
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| 15 | =============================================================================
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| 16 | */
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| 17 |
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[7258c6a] | 18 | int16_t delnote(void)
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[f40a309] | 19 | {
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| 20 | register struct n_entry *bp, *cp, *ep;
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[7258c6a] | 21 | register int32_t t_left;
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| 22 | register int16_t tnote, grp;
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| 23 | register int16_t runtag, scantag;
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| 24 | int16_t disptag;
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[f40a309] | 25 |
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| 26 | disptag = FALSE; /* nothing changed yet */
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| 27 |
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| 28 | if (NOT recsw) /* must be in record mode */
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| 29 | return(FAILURE);
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| 30 |
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| 31 | /* convert cursor position to note number and time */
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| 32 |
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[e225e77] | 33 | if (pix2mid())
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[f40a309] | 34 | goto notnote;
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| 35 |
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| 36 | ++cflag;
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| 37 | tnote = cnote;
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| 38 | t_left = t_cur - TO_LFT;
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| 39 | cp = (struct n_entry *)frfind(ctime, 0);
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| 40 |
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[fa38804] | 41 |
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[f40a309] | 42 | while (cflag--) { /* handle both naturals and accidentals */
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| 43 |
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| 44 | for (grp = 0; grp < 12; grp++) { /* for each group ... */
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| 45 |
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| 46 | if ((grpstat[grp] EQ 0) OR /* ... enabled and ... */
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| 47 | (grpmode[grp] NE 2)) /* ... in record mode: */
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| 48 | continue;
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| 49 |
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| 50 | runtag = TRUE;
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| 51 | bp = cp; /* start at cursor */
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| 52 |
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| 53 | while (runtag) { /* scan left from cursor until: */
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| 54 |
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| 55 | if ((bp->e_time LT t_left) OR
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| 56 | (bp->e_type EQ EV_SCORE)) { /* left edge */
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| 57 |
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| 58 | /* done -- nothing to delete */
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| 59 |
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| 60 | runtag = FALSE;
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| 61 | continue;
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[fa38804] | 62 |
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[f40a309] | 63 | } else if ((bp->e_type EQ EV_NEND) AND
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| 64 | (bp->e_note EQ tnote) AND
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| 65 | (bp->e_group EQ grp)) { /* note end */
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| 66 |
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| 67 | /* done -- overlap */
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| 68 |
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| 69 | runtag = FALSE;
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| 70 | continue;
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| 71 |
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| 72 | } else if ((bp->e_type EQ EV_NBEG) AND
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| 73 | (bp->e_note EQ tnote) AND
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| 74 | (bp->e_group EQ grp)) { /* note begin */
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| 75 |
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| 76 | /* possible deletion */
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| 77 |
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| 78 | /* scan right from note begin until: */
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| 79 |
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| 80 | ep = bp->e_fwd;
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| 81 | scantag = TRUE;
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| 82 |
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| 83 | while (scantag) {
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| 84 |
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| 85 | /* note begin -- done -- overlap */
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| 86 |
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| 87 | if ((ep->e_type EQ EV_NBEG) AND
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| 88 | (ep->e_note EQ tnote) AND
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| 89 | (ep->e_group EQ grp)) {
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| 90 |
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| 91 | scantag = FALSE;
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| 92 | runtag = FALSE;
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| 93 | continue;
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[9519422] | 94 |
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[f40a309] | 95 | } else if ((ep->e_type EQ EV_NEND) AND
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| 96 | (ep->e_note EQ tnote) AND
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| 97 | (ep->e_group EQ grp)) {
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| 98 |
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| 99 | /* note end */
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| 100 |
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| 101 | /* delete note end */
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| 102 |
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| 103 | if (cp EQ ep)
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| 104 | cp = cp->e_bak;
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| 105 |
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| 106 | if (p_ctr EQ ep)
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| 107 | p_ctr = p_ctr->e_bak;
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| 108 |
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| 109 | if (p_bak EQ ep)
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| 110 | p_bak = p_bak->e_bak;
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| 111 |
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| 112 | if (p_fwd EQ ep)
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| 113 | p_fwd = p_fwd->e_bak;
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| 114 |
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| 115 | if (p_cur EQ ep)
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| 116 | p_cur = p_cur->e_bak;
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| 117 |
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| 118 | e_del(e_rmv(ep));
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| 119 |
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| 120 | /* delete note begin */
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| 121 |
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| 122 | if (cp EQ bp)
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| 123 | cp = cp->e_bak;
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| 124 |
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| 125 | if (p_ctr EQ bp)
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| 126 | p_ctr = p_ctr->e_bak;
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| 127 |
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| 128 | if (p_bak EQ bp)
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| 129 | p_bak = p_bak->e_bak;
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| 130 |
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| 131 | if (p_fwd EQ bp)
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| 132 | p_fwd = p_fwd->e_bak;
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| 133 |
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| 134 | if (p_cur EQ bp)
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| 135 | p_cur = p_cur->e_bak;
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| 136 |
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| 137 | e_del(e_rmv(bp));
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| 138 |
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| 139 | disptag = TRUE;
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| 140 | runtag = FALSE;
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| 141 | scantag = FALSE;
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| 142 | continue;
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| 143 |
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| 144 | } else if (ep->e_type EQ EV_FINI) {
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| 145 |
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| 146 | /* score end */
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| 147 |
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| 148 | /* delete note begin */
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| 149 |
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| 150 | if (cp EQ bp)
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| 151 | cp = cp->e_bak;
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| 152 |
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| 153 | if (p_ctr EQ bp)
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| 154 | p_ctr = p_ctr->e_bak;
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| 155 |
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| 156 | if (p_bak EQ bp)
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| 157 | p_bak = p_bak->e_bak;
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| 158 |
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| 159 | if (p_fwd EQ bp)
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| 160 | p_fwd = p_fwd->e_bak;
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| 161 |
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| 162 | if (p_cur EQ bp)
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| 163 | p_cur = p_cur->e_bak;
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| 164 |
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| 165 | e_del(e_rmv(bp));
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| 166 |
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| 167 | disptag = TRUE;
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| 168 | runtag = FALSE;
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| 169 | scantag = FALSE;
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| 170 | continue;
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| 171 | }
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| 172 |
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| 173 | /* scan right */
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| 174 |
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| 175 | ep = ep->e_fwd;
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| 176 |
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| 177 | } /* end while (scantag) */
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| 178 |
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| 179 | } /* end if */
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| 180 |
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| 181 | /* scan left */
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| 182 |
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| 183 | bp = bp->e_bak;
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| 184 |
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| 185 | } /* end while (runtag) */
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| 186 |
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| 187 | } /* end for (grp) */
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| 188 |
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| 189 | /* handle accidentals */
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| 190 |
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| 191 | if (ac_code EQ N_SHARP)
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| 192 | ++tnote; /* treat accidentals as sharps */
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| 193 | else
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| 194 | --tnote; /* treat accidentals as flats */
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| 195 |
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| 196 | } /* end while (cflag) */
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| 197 |
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| 198 | notnote: /* jumped to if pix2mid() returned FAILURE (not on a note) */
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| 199 |
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| 200 | /* check for a bar marker delete operation */
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| 201 |
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| 202 | if (NOT disptag) { /* if no notes were deleted, try for a bar */
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| 203 |
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| 204 | if (ctime < 0L) /* time has to be good */
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| 205 | return(FAILURE);
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| 206 |
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| 207 | /* search current time for a bar marker - delete any found */
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| 208 |
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| 209 | ep = ep_adj(p_cur, 1, ctime);
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| 210 |
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| 211 | while (ctime EQ ep->e_time) {
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| 212 |
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| 213 | bp = ep->e_fwd;
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| 214 |
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| 215 | if (EV_BAR EQ ep->e_type) {
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| 216 |
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| 217 | if (ep EQ p_bak)
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| 218 | p_bak = p_bak->e_bak;
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| 219 |
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| 220 | if (ep EQ p_ctr)
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| 221 | p_ctr = p_ctr->e_bak;
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| 222 |
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| 223 | if (ep EQ p_cur)
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| 224 | p_cur = p_cur->e_bak;
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| 225 |
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| 226 | if (ep EQ p_fwd)
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| 227 | p_fwd = p_fwd->e_bak;
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| 228 |
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| 229 | e_del(e_rmv(ep));
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| 230 | disptag = TRUE;
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| 231 | }
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| 232 |
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| 233 | ep = bp;
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| 234 | }
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| 235 | }
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| 236 |
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| 237 | if (disptag)
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| 238 | sc_refr(t_cur);
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| 239 |
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| 240 | return(disptag ? SUCCESS : FAILURE);
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| 241 | }
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[6262b5c] | 242 |
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