projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 247cb223 BS |
1 | /* shift.c 4.1 83/02/11 */ |
| 2 | ||
| 3 | # include "e.h" | |
| 4 | #include "e.def" | |
| 5 | ||
| 6 | bshiftb(p1, dir, p2) int p1, dir, p2; { | |
| 7 | int shval, diffps, effps, effps2, d1, h1, b1, h2, b2; | |
| 8 | char *sh1, *sh2; | |
| 9 | ||
| 10 | yyval = p1; | |
| 11 | h1 = eht[p1]; | |
| 12 | b1 = ebase[p1]; | |
| 13 | h2 = eht[p2]; | |
| 14 | b2 = ebase[p2]; | |
| 15 | effps = EFFPS(ps); | |
| 16 | effps2 = EFFPS(ps+deltaps); | |
| 17 | diffps = deltaps; | |
| 18 | sh1 = sh2 = ""; | |
| 19 | if( dir == SUB ) { | |
| 20 | /* top 1/2m above bottom of main box */ | |
| 21 | d1 = VERT( (effps2*6)/2 ); | |
| 22 | shval = - d1 + h2 - b2; | |
| 23 | if( d1+b1 > h2 ) /* move little sub down */ | |
| 24 | shval = b1-b2; | |
| 25 | ebase[yyval] = b1 + max(0, h2-b1-d1); | |
| 26 | eht[yyval] = h1 + max(0, h2-b1-d1); | |
| 27 | if (rfont[p1] == ITAL && lfont[p2] == ROM) | |
| 28 | sh1 = "\\|"; | |
| 29 | if (rfont[p2] == ITAL) | |
| 30 | sh2 = "\\|"; | |
| 31 | } else { /* superscript */ | |
| 32 | /* 4/10 up main box */ | |
| 33 | d1 = VERT( (effps*6*2)/10 ); | |
| 34 | ebase[yyval] = b1; | |
| 35 | shval = -VERT( (4 * (h1-b1)) / 10 ) - b2; | |
| 36 | if( VERT(4*(h1-b1)/10) + h2 < h1-b1 ) /* raise little super */ | |
| 37 | shval = -(h1-b1) + h2-b2 - d1; | |
| 38 | eht[yyval] = h1 + max(0, h2-VERT((6*(h1-b1))/10)); | |
| 39 | if (rfont[p1] == ITAL) | |
| 40 | sh1 = "\\|"; | |
| 41 | if (rfont[p2] == ITAL) | |
| 42 | sh2 = "\\|"; | |
| 43 | } | |
| 44 | if(dbg)printf(".\tb:b shift b: S%d <- S%d vert %d S%d vert %d; b=%d, h=%d\n", | |
| 45 | yyval, p1, shval, p2, -shval, ebase[yyval], eht[yyval]); | |
| 46 | printf(".as %d \\v'%du'\\s-%d%s\\*(%d\\s+%d%s\\v'%du'\n", | |
| 47 | yyval, shval, diffps, sh1, p2, diffps, sh2, -shval); | |
| 48 | ps += deltaps; | |
| 49 | if (rfont[p2] == ITAL) | |
| 50 | rfont[p1] = 0; | |
| 51 | else | |
| 52 | rfont[p1] = rfont[p2]; | |
| 53 | ofree(p2); | |
| 54 | } | |
| 55 | ||
| 56 | shift(p1) int p1; { | |
| 57 | ps -= deltaps; | |
| 58 | yyval = p1; | |
| 59 | if(dbg)printf(".\tshift: %d;ps=%d\n", yyval, ps); | |
| 60 | } | |
| 61 | ||
| 62 | shift2(p1, p2, p3) int p1, p2, p3; { | |
| 63 | int effps, effps2, h1, h2, h3, b1, b2, b3, subsh, d1, d2, supsh; | |
| 64 | int treg; | |
| 65 | treg = oalloc(); | |
| 66 | yyval = p1; | |
| 67 | if(dbg)printf(".\tshift2 s%d <- %d %d %d\n", yyval, p1, p2, p3); | |
| 68 | effps = EFFPS(ps+deltaps); | |
| 69 | eht[p3] = h3 = VERT( (eht[p3] * effps) / EFFPS(ps) ); | |
| 70 | ps += deltaps; | |
| 71 | effps2 = EFFPS(ps+deltaps); | |
| 72 | h1 = eht[p1]; b1 = ebase[p1]; | |
| 73 | h2 = eht[p2]; b2 = ebase[p2]; | |
| 74 | b3 = ebase[p3]; | |
| 75 | d1 = VERT( (effps2*6)/2 ); | |
| 76 | subsh = -d1+h2-b2; | |
| 77 | if( d1+b1 > h2 ) /* move little sub down */ | |
| 78 | subsh = b1-b2; | |
| 79 | supsh = -VERT( (4*(h1-b1))/10 ) - b3; | |
| 80 | d2 = VERT( (effps*6*2)/10 ); | |
| 81 | if( VERT(4*(h1-b1)/10)+h3 < h1-b1 ) | |
| 82 | supsh = -(h1-b1) + (h3-b3) - d2; | |
| 83 | eht[yyval] = h1 + max(0, h3-VERT( (6*(h1-b1))/10 )) + max(0, h2-b1-d1); | |
| 84 | ebase[yyval] = b1+max(0, h2-b1-d1); | |
| 85 | if (rfont[p1] == ITAL && lfont[p2] == ROM) | |
| 86 | printf(".ds %d \\|\\*(%d\n", p2, p2); | |
| 87 | if (rfont[p2] == ITAL) | |
| 88 | printf(".as %d \\|\n", p2); | |
| 89 | nrwid(p2, effps, p2); | |
| 90 | if (rfont[p1] == ITAL && lfont[p3] == ROM) | |
| 91 | printf(".ds %d \\|\\|\\*(%d\n", p3, p3); | |
| 92 | else | |
| 93 | printf(".ds %d \\|\\*(%d\n", p3, p3); | |
| 94 | nrwid(p3, effps, p3); | |
| 95 | printf(".nr %d \\n(%d\n", treg, p3); | |
| 96 | printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2); | |
| 97 | printf(".as %d \\v'%du'\\s%d\\*(%d\\h'-\\n(%du'\\v'%du'\\\n", | |
| 98 | p1, subsh, effps, p2, p2, -subsh+supsh); | |
| 99 | printf("\\s%d\\*(%d\\h'-\\n(%du+\\n(%du'\\s%d\\v'%du'\n", | |
| 100 | effps, p3, p3, treg, effps2, -supsh); | |
| 101 | ps += deltaps; | |
| 102 | if (rfont[p2] == ITAL) | |
| 103 | rfont[yyval] = 0; /* lie */ | |
| 104 | ofree(p2); ofree(p3); ofree(treg); | |
| 105 | } |