[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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[e225e77] | 17 | extern int16_t pix2mid(void);
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| 18 | extern int16_t sc_refr(int32_t t);
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| 19 |
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[f40a309] | 20 | #define TO_LFT (TO_BAK + 1)
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| 21 |
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[7258c6a] | 22 | extern int16_t cflag; /* accidental flag */
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| 23 | extern int16_t cnote; /* note value at cursor */
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| 24 | extern int16_t cxval; /* cursor x value */
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| 25 | extern int16_t cyval; /* cursor y value */
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| 26 | extern int16_t lstflag; /* last note entry list end flag */
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| 27 | extern int16_t recsw; /* record status */
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[f40a309] | 28 |
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[7258c6a] | 29 | extern int32_t ctime; /* time at cursor */
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[f40a309] | 30 |
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[7258c6a] | 31 | extern int16_t grpmode[12]; /* group record modes */
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| 32 | extern int16_t grpstat[12]; /* group status */
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[f40a309] | 33 | /* |
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| 34 |
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| 35 | */
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| 36 |
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| 37 | /*
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| 38 | =============================================================================
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| 39 | delnote() -- delete a note
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| 40 | =============================================================================
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| 41 | */
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[7258c6a] | 42 |
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[f40a309] | 43 | int16_t delnote(void)
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| 44 | {
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[7258c6a] | 45 | register struct n_entry *bp, *cp, *ep;
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| 46 | register int32_t t_left;
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| 47 | register int16_t tnote, grp;
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| 48 | register int16_t runtag, scantag;
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[f40a309] | 49 | int16_t disptag;
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| 50 |
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| 51 | disptag = FALSE; /* nothing changed yet */
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| 52 |
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| 53 | if (NOT recsw) /* must be in record mode */
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| 54 | return(FAILURE);
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| 55 |
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| 56 | /* convert cursor position to note number and time */
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[e225e77] | 57 |
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[f40a309] | 58 | if (pix2mid())
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| 59 | goto notnote;
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| 60 |
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| 61 | ++cflag;
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| 62 | tnote = cnote;
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| 63 | t_left = t_cur - TO_LFT;
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| 64 | cp = (struct n_entry *)frfind(ctime, 0);
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| 65 |
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| 66 | /* |
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| 67 |
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| 68 | */
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| 69 | while (cflag--) { /* handle both naturals and accidentals */
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| 70 |
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| 71 | for (grp = 0; grp < 12; grp++) { /* for each group ... */
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| 72 |
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| 73 | if ((grpstat[grp] EQ 0) OR /* ... enabled and ... */
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| 74 | (grpmode[grp] NE 2)) /* ... in record mode: */
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| 75 | continue;
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| 76 |
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| 77 | runtag = TRUE;
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| 78 | bp = cp; /* start at cursor */
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| 79 |
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| 80 | while (runtag) { /* scan left from cursor until: */
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| 81 |
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| 82 | if ((bp->e_time LT t_left) OR
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| 83 | (bp->e_type EQ EV_SCORE)) { /* left edge */
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| 84 |
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| 85 | /* done -- nothing to delete */
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| 86 |
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| 87 | runtag = FALSE;
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| 88 | continue;
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| 89 | /* |
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| 90 |
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| 91 | */
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| 92 | } else if ((bp->e_type EQ EV_NEND) AND
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| 93 | (bp->e_note EQ tnote) AND
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| 94 | (bp->e_group EQ grp)) { /* note end */
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| 95 |
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| 96 | /* done -- overlap */
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| 97 |
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| 98 | runtag = FALSE;
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| 99 | continue;
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| 100 | /* |
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| 101 |
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| 102 | */
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| 103 |
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| 104 | } else if ((bp->e_type EQ EV_NBEG) AND
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| 105 | (bp->e_note EQ tnote) AND
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| 106 | (bp->e_group EQ grp)) { /* note begin */
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| 107 |
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| 108 | /* possible deletion */
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| 109 |
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| 110 | /* scan right from note begin until: */
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| 111 |
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| 112 | ep = bp->e_fwd;
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| 113 | scantag = TRUE;
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| 114 |
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| 115 | while (scantag) {
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| 116 |
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| 117 | /* note begin -- done -- overlap */
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| 118 |
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| 119 | if ((ep->e_type EQ EV_NBEG) AND
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| 120 | (ep->e_note EQ tnote) AND
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| 121 | (ep->e_group EQ grp)) {
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| 122 |
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| 123 | scantag = FALSE;
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[9519422] | 124 | runtag = FALSE;
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[f40a309] | 125 | continue;
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| 126 | /* |
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| 127 |
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| 128 | */
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| 129 |
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| 130 | } else if ((ep->e_type EQ EV_NEND) AND
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| 131 | (ep->e_note EQ tnote) AND
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| 132 | (ep->e_group EQ grp)) {
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| 133 |
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| 134 | /* note end */
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| 135 |
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| 136 | /* delete note end */
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| 137 |
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| 138 | if (cp EQ ep)
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| 139 | cp = cp->e_bak;
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| 140 |
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| 141 | if (p_ctr EQ ep)
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| 142 | p_ctr = p_ctr->e_bak;
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| 143 |
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| 144 | if (p_bak EQ ep)
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| 145 | p_bak = p_bak->e_bak;
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| 146 |
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| 147 | if (p_fwd EQ ep)
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| 148 | p_fwd = p_fwd->e_bak;
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| 149 |
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| 150 | if (p_cur EQ ep)
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| 151 | p_cur = p_cur->e_bak;
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| 152 |
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| 153 | e_del(e_rmv(ep));
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| 154 | /* |
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| 155 |
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| 156 | */
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| 157 |
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| 158 | /* delete note begin */
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| 159 |
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| 160 | if (cp EQ bp)
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| 161 | cp = cp->e_bak;
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| 162 |
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| 163 | if (p_ctr EQ bp)
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| 164 | p_ctr = p_ctr->e_bak;
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| 165 |
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| 166 | if (p_bak EQ bp)
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| 167 | p_bak = p_bak->e_bak;
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| 168 |
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| 169 | if (p_fwd EQ bp)
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| 170 | p_fwd = p_fwd->e_bak;
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| 171 |
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| 172 | if (p_cur EQ bp)
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| 173 | p_cur = p_cur->e_bak;
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| 174 |
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| 175 | e_del(e_rmv(bp));
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| 176 |
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| 177 | disptag = TRUE;
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| 178 | runtag = FALSE;
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| 179 | scantag = FALSE;
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| 180 | continue;
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| 181 | /* |
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| 182 |
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| 183 | */
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| 184 |
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| 185 | } else if (ep->e_type EQ EV_FINI) {
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| 186 |
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| 187 | /* score end */
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| 188 |
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| 189 | /* delete note begin */
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| 190 |
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| 191 | if (cp EQ bp)
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| 192 | cp = cp->e_bak;
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| 193 |
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| 194 | if (p_ctr EQ bp)
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| 195 | p_ctr = p_ctr->e_bak;
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| 196 |
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| 197 | if (p_bak EQ bp)
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| 198 | p_bak = p_bak->e_bak;
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| 199 |
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| 200 | if (p_fwd EQ bp)
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| 201 | p_fwd = p_fwd->e_bak;
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| 202 |
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| 203 | if (p_cur EQ bp)
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| 204 | p_cur = p_cur->e_bak;
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| 205 |
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| 206 | e_del(e_rmv(bp));
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| 207 |
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| 208 | disptag = TRUE;
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| 209 | runtag = FALSE;
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| 210 | scantag = FALSE;
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| 211 | continue;
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| 212 | }
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| 213 |
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| 214 | /* scan right */
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| 215 |
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| 216 | ep = ep->e_fwd;
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| 217 |
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| 218 | } /* end while (scantag) */
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| 219 |
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| 220 | } /* end if */
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| 221 | /* |
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| 222 |
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| 223 | */
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| 224 |
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| 225 | /* scan left */
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| 226 |
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| 227 | bp = bp->e_bak;
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| 228 |
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| 229 | } /* end while (runtag) */
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| 230 |
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| 231 | } /* end for (grp) */
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| 232 |
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| 233 | /* handle accidentals */
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| 234 |
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| 235 | if (ac_code EQ N_SHARP)
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| 236 | ++tnote; /* treat accidentals as sharps */
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| 237 | else
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| 238 | --tnote; /* treat accidentals as flats */
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| 239 |
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| 240 | } /* end while (cflag) */
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| 241 |
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| 242 |
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| 243 | /* |
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| 244 |
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| 245 | */
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| 246 |
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| 247 | notnote: /* jumped to if pix2mid() returned FAILURE (not on a note) */
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| 248 |
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| 249 | /* check for a bar marker delete operation */
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| 250 |
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| 251 | if (NOT disptag) { /* if no notes were deleted, try for a bar */
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| 252 |
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| 253 | if (ctime < 0L) /* time has to be good */
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| 254 | return(FAILURE);
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| 255 |
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| 256 | /* search current time for a bar marker - delete any found */
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| 257 |
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| 258 | ep = ep_adj(p_cur, 1, ctime);
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| 259 |
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| 260 | while (ctime EQ ep->e_time) {
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| 261 |
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| 262 | bp = ep->e_fwd;
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| 263 |
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| 264 | if (EV_BAR EQ ep->e_type) {
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| 265 |
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| 266 | if (ep EQ p_bak)
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| 267 | p_bak = p_bak->e_bak;
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| 268 |
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| 269 | if (ep EQ p_ctr)
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| 270 | p_ctr = p_ctr->e_bak;
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| 271 |
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| 272 | if (ep EQ p_cur)
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| 273 | p_cur = p_cur->e_bak;
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| 274 |
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| 275 | if (ep EQ p_fwd)
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| 276 | p_fwd = p_fwd->e_bak;
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| 277 |
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| 278 | e_del(e_rmv(ep));
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| 279 | disptag = TRUE;
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| 280 | }
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| 281 |
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| 282 | ep = bp;
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| 283 | }
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| 284 | }
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| 285 |
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| 286 | if (disptag)
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| 287 | sc_refr(t_cur);
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| 288 |
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| 289 | return(disptag ? SUCCESS : FAILURE);
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| 290 | }
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