[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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| 8 | #include "stddefs.h"
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| 9 | #include "score.h"
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| 10 | #include "scfns.h"
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| 11 | #include "graphdef.h"
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| 12 | #include "vsdd.h"
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| 13 |
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| 14 | #include "midas.h"
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| 15 | #include "scdsp.h"
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| 16 |
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| 17 | #define TO_LFT (TO_BAK + 1)
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| 18 |
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| 19 | extern short cflag; /* accidental flag */
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| 20 | extern short cnote; /* note value at cursor */
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| 21 | extern short cxval; /* cursor x value */
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| 22 | extern short cyval; /* cursor y value */
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| 23 | extern short lstflag; /* last note entry list end flag */
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| 24 | extern short recsw; /* record status */
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| 25 |
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| 26 | extern long ctime; /* time at cursor */
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| 27 |
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| 28 | extern short grpmode[12]; /* group record modes */
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| 29 | extern short grpstat[12]; /* group status */
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| 30 | /* |
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| 31 |
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| 32 | */
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| 33 |
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| 34 | /*
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| 35 | =============================================================================
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| 36 | delnote() -- delete a note
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| 37 | =============================================================================
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| 38 | */
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[0580615] | 39 |
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[f40a309] | 40 | short delnote(void)
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| 41 | {
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| 42 | register struct n_entry *bp, *cp, *ep;
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| 43 | register long t_left;
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| 44 | register short tnote, grp;
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| 45 | register short runtag, scantag;
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| 46 | short disptag;
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| 47 |
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| 48 | disptag = FALSE; /* nothing changed yet */
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| 49 |
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| 50 | if (NOT recsw) /* must be in record mode */
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| 51 | return(FAILURE);
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| 52 |
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| 53 | /* convert cursor position to note number and time */
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| 54 |
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| 55 | if (pix2mid(cxval, cyval))
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| 56 | goto notnote;
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| 57 |
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| 58 | ++cflag;
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| 59 | tnote = cnote;
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| 60 | t_left = t_cur - TO_LFT;
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| 61 | cp = (struct n_entry *)frfind(ctime, 0);
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| 62 |
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| 63 | /* |
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| 64 |
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| 65 | */
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| 66 | while (cflag--) { /* handle both naturals and accidentals */
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| 67 |
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| 68 | for (grp = 0; grp < 12; grp++) { /* for each group ... */
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| 69 |
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| 70 | if ((grpstat[grp] EQ 0) OR /* ... enabled and ... */
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| 71 | (grpmode[grp] NE 2)) /* ... in record mode: */
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| 72 | continue;
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| 73 |
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| 74 | runtag = TRUE;
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| 75 | bp = cp; /* start at cursor */
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| 76 |
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| 77 | while (runtag) { /* scan left from cursor until: */
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| 78 |
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| 79 | if ((bp->e_time LT t_left) OR
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| 80 | (bp->e_type EQ EV_SCORE)) { /* left edge */
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| 81 |
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| 82 | /* done -- nothing to delete */
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| 83 |
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| 84 | runtag = FALSE;
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| 85 | continue;
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| 86 | /* |
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| 87 |
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| 88 | */
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| 89 | } else if ((bp->e_type EQ EV_NEND) AND
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| 90 | (bp->e_note EQ tnote) AND
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| 91 | (bp->e_group EQ grp)) { /* note end */
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| 92 |
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| 93 | /* done -- overlap */
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| 94 |
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| 95 | runtag = FALSE;
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| 96 | continue;
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| 97 | /* |
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| 98 |
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| 99 | */
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| 100 |
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| 101 | } else if ((bp->e_type EQ EV_NBEG) AND
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| 102 | (bp->e_note EQ tnote) AND
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| 103 | (bp->e_group EQ grp)) { /* note begin */
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| 104 |
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| 105 | /* possible deletion */
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| 106 |
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| 107 | /* scan right from note begin until: */
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| 108 |
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| 109 | ep = bp->e_fwd;
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| 110 | scantag = TRUE;
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| 111 |
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| 112 | while (scantag) {
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| 113 |
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| 114 | /* note begin -- done -- overlap */
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| 115 |
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| 116 | if ((ep->e_type EQ EV_NBEG) AND
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| 117 | (ep->e_note EQ tnote) AND
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| 118 | (ep->e_group EQ grp)) {
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| 119 |
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| 120 | scantag = FALSE;
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| 121 | runtag = FALSE;
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| 122 | continue;
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| 123 | /* |
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| 124 |
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| 125 | */
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| 126 |
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| 127 | } else if ((ep->e_type EQ EV_NEND) AND
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| 128 | (ep->e_note EQ tnote) AND
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| 129 | (ep->e_group EQ grp)) {
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| 130 |
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| 131 | /* note end */
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| 132 |
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| 133 | /* delete note end */
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| 134 |
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| 135 | if (cp EQ ep)
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| 136 | cp = cp->e_bak;
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| 137 |
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| 138 | if (p_ctr EQ ep)
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| 139 | p_ctr = p_ctr->e_bak;
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| 140 |
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| 141 | if (p_bak EQ ep)
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| 142 | p_bak = p_bak->e_bak;
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| 143 |
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| 144 | if (p_fwd EQ ep)
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| 145 | p_fwd = p_fwd->e_bak;
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| 146 |
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| 147 | if (p_cur EQ ep)
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| 148 | p_cur = p_cur->e_bak;
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| 149 |
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| 150 | e_del(e_rmv(ep));
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| 151 | /* |
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| 152 |
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| 153 | */
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| 154 |
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| 155 | /* delete note begin */
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| 156 |
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| 157 | if (cp EQ bp)
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| 158 | cp = cp->e_bak;
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| 159 |
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| 160 | if (p_ctr EQ bp)
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| 161 | p_ctr = p_ctr->e_bak;
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| 162 |
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| 163 | if (p_bak EQ bp)
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| 164 | p_bak = p_bak->e_bak;
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| 165 |
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| 166 | if (p_fwd EQ bp)
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| 167 | p_fwd = p_fwd->e_bak;
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| 168 |
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| 169 | if (p_cur EQ bp)
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| 170 | p_cur = p_cur->e_bak;
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| 171 |
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| 172 | e_del(e_rmv(bp));
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| 173 |
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| 174 | disptag = TRUE;
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| 175 | runtag = FALSE;
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| 176 | scantag = FALSE;
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| 177 | continue;
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| 178 | /* |
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| 179 |
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| 180 | */
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| 181 |
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| 182 | } else if (ep->e_type EQ EV_FINI) {
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| 183 |
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| 184 | /* score end */
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| 185 |
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| 186 | /* delete note begin */
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| 187 |
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| 188 | if (cp EQ bp)
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| 189 | cp = cp->e_bak;
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| 190 |
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| 191 | if (p_ctr EQ bp)
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| 192 | p_ctr = p_ctr->e_bak;
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| 193 |
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| 194 | if (p_bak EQ bp)
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| 195 | p_bak = p_bak->e_bak;
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| 196 |
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| 197 | if (p_fwd EQ bp)
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| 198 | p_fwd = p_fwd->e_bak;
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| 199 |
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| 200 | if (p_cur EQ bp)
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| 201 | p_cur = p_cur->e_bak;
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| 202 |
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| 203 | e_del(e_rmv(bp));
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| 204 |
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| 205 | disptag = TRUE;
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| 206 | runtag = FALSE;
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| 207 | scantag = FALSE;
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| 208 | continue;
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| 209 | }
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| 210 |
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| 211 | /* scan right */
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| 212 |
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| 213 | ep = ep->e_fwd;
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| 214 |
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| 215 | } /* end while (scantag) */
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| 216 |
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| 217 | } /* end if */
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| 218 | /* |
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| 219 |
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| 220 | */
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| 221 |
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| 222 | /* scan left */
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| 223 |
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| 224 | bp = bp->e_bak;
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| 225 |
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| 226 | } /* end while (runtag) */
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| 227 |
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| 228 | } /* end for (grp) */
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| 229 |
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| 230 | /* handle accidentals */
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| 231 |
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| 232 | if (ac_code EQ N_SHARP)
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| 233 | ++tnote; /* treat accidentals as sharps */
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| 234 | else
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| 235 | --tnote; /* treat accidentals as flats */
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| 236 |
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| 237 | } /* end while (cflag) */
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| 238 |
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| 239 |
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| 240 | /* |
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| 241 |
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| 242 | */
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| 243 |
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| 244 | notnote: /* jumped to if pix2mid() returned FAILURE (not on a note) */
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| 245 |
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| 246 | /* check for a bar marker delete operation */
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| 247 |
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| 248 | if (NOT disptag) { /* if no notes were deleted, try for a bar */
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| 249 |
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| 250 | if (ctime < 0L) /* time has to be good */
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| 251 | return(FAILURE);
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| 252 |
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| 253 | /* search current time for a bar marker - delete any found */
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| 254 |
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| 255 | ep = ep_adj(p_cur, 1, ctime);
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| 256 |
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| 257 | while (ctime EQ ep->e_time) {
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| 258 |
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| 259 | bp = ep->e_fwd;
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| 260 |
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| 261 | if (EV_BAR EQ ep->e_type) {
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| 262 |
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| 263 | if (ep EQ p_bak)
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| 264 | p_bak = p_bak->e_bak;
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| 265 |
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| 266 | if (ep EQ p_ctr)
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| 267 | p_ctr = p_ctr->e_bak;
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| 268 |
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| 269 | if (ep EQ p_cur)
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| 270 | p_cur = p_cur->e_bak;
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| 271 |
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| 272 | if (ep EQ p_fwd)
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| 273 | p_fwd = p_fwd->e_bak;
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| 274 |
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| 275 | e_del(e_rmv(ep));
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| 276 | disptag = TRUE;
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| 277 | }
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| 278 |
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| 279 | ep = bp;
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| 280 | }
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| 281 | }
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| 282 |
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| 283 | if (disptag)
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| 284 | sc_refr(t_cur);
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| 285 |
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| 286 | return(disptag ? SUCCESS : FAILURE);
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| 287 | }
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