diff options
Diffstat (limited to 'z23.c')
| -rw-r--r-- | z23.c | 146 |
1 files changed, 108 insertions, 38 deletions
@@ -1,9 +1,9 @@ /*@z23.c:Galley Printer:ScaleFactor()@****************************************/ /* */ -/* THE LOUT DOCUMENT FORMATTING SYSTEM (VERSION 3.26) */ +/* THE LOUT DOCUMENT FORMATTING SYSTEM (VERSION 3.27) */ /* COPYRIGHT (C) 1991, 2002 Jeffrey H. Kingston */ /* */ -/* Jeffrey H. Kingston (jeff@cs.usyd.edu.au) */ +/* Jeffrey H. Kingston (jeff@it.usyd.edu.au) */ /* Basser Department of Computer Science */ /* The University of Sydney 2006 */ /* AUSTRALIA */ @@ -35,6 +35,48 @@ /*****************************************************************************/ /* */ +/* FirstDefiniteLDN(x, link, y, jn, ymk, dim, sp, pg) */ +/* NextDefiniteWithGapLDN(x, link, y, g, jn, ymk, dim, sp, pg) */ +/* */ +/* Like FirstDefinite and NextDefiniteWithGap but during the scan, if a */ +/* LINK_DEST_NULL is encountered, call FixAndPrintObject on it before */ +/* continuing on to find the next definite object. */ +/* */ +/*****************************************************************************/ + +#define FirstDefiniteLDN(x, link, y, jn, ymk, dim, sp, pg) \ +{ jn = TRUE; \ + for( link = Down(x); link != x; link = NextDown(link) ) \ + { Child(y, link); \ + if( type(y) == GAP_OBJ ) jn = jn && join(gap(y)); \ + else if( type(y)==SPLIT ? SplitIsDefinite(y) : is_definite(type(y)))\ + break; \ + else if( type(y) == LINK_DEST_NULL ) \ + FixAndPrintObject(y, ymk, 0, 0, dim, sp, pg, 0, &aback, &afwd); \ + } \ +} /* end FirstDefiniteLDN */ + +#define NextDefiniteWithGapLDN(x, link, y, g, jn, ymk, dim, sp, pg) \ +{ g = nilobj; jn = TRUE; \ + for( link = NextDown(link); link != x; link = NextDown(link) ) \ + { Child(y, link); \ + if( type(y) == GAP_OBJ ) g = y, jn = jn && join(gap(y)); \ + else if( type(y)==SPLIT ? SplitIsDefinite(y):is_definite(type(y)) ) \ + { \ + debug2(DFS, D, " NextDefiniteWithGap at %s %s", \ + Image(type(y)), EchoObject(y)); \ + assert( g != nilobj, "NextDefiniteWithGap: g == nilobj!" ); \ + break; \ + } \ + else if( type(y) == LINK_DEST_NULL ) \ + FixAndPrintObject(y, ymk, 0, 0, dim, sp, pg, 0, &aback, &afwd); \ + } \ +} /* end NextDefiniteWithGapLDN */ + + + +/*****************************************************************************/ +/* */ /* static float ScaleFactor(avail_size, inner_size) */ /* */ /* Return the scale factor for this scaling, or 0 if impossible. */ @@ -59,7 +101,7 @@ static float ScaleFactor(FULL_LENGTH avail_size, FULL_LENGTH inner_size) /*****************************************************************************/ static FULL_LENGTH FindAdjustIncrement(OBJECT x, FULL_LENGTH frame_size,int dim) -{ OBJECT y, link, prev, g; +{ OBJECT y = nilobj, link, prev = nilobj, g; int adjustable_gaps; BOOLEAN jn; FULL_LENGTH inc, mk, actual_size; @@ -131,7 +173,7 @@ static FULL_LENGTH FindAdjustIncrement(OBJECT x, FULL_LENGTH frame_size,int dim) OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, FULL_LENGTH xf, int dim, BOOLEAN suppress, FULL_LENGTH pg, int count, FULL_LENGTH *actual_back, FULL_LENGTH *actual_fwd) -{ OBJECT y, link, prev, g, z, face, thr, res, uplink; +{ OBJECT y = nilobj, link, prev = nilobj, g, z, face, thr, res, uplink; /* OBJECT fixed_thr, tmp; */ FULL_LENGTH mk, ymk, frame_size, back_edge, yb, yf, inc, f; FULL_LENGTH aback, afwd; @@ -590,6 +632,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, case LINK_SOURCE: case LINK_DEST: + case LINK_DEST_NULL: case LINK_URL: CountChild(y, LastDown(x), count); @@ -606,6 +649,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, break; case LINK_DEST: + case LINK_DEST_NULL: BackEnd->LinkDest(z, save_mark(x) - back(x, COLM), (pg - xmk) - xf, save_mark(x) + fwd(x, COLM), (pg - xmk) + xb); @@ -668,7 +712,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, Image(type(x)), EchoLength(back(x, dim)), EchoLength(fwd(x, dim)), EchoLength(xmk), EchoLength(xb), EchoLength(xf)); - FirstDefinite(x, link, prev, jn); + FirstDefiniteLDN(x, link, prev, jn, xmk, dim, NO_SUPPRESS, pg); if( link != x ) { @@ -680,7 +724,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, /* */ /*******************************************************************/ - NextDefiniteWithGap(x, link, y, g, jn); + NextDefiniteWithGap(x, link, y, g, jn); /* not LDN since will redo */ if( link != x && mode(gap(g)) == TAB_MODE && units(gap(g)) == AVAIL_UNIT && width(gap(g)) == 0 ) { @@ -692,7 +736,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, mode(gap(g)) = EDGE_MODE; units(gap(g)) = FIXED_UNIT; } - FirstDefinite(x, link, prev, jn); + FirstDefinite(x, link, prev, jn); /* not LDN since already done */ /*******************************************************************/ /* */ @@ -724,7 +768,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, /* */ /*******************************************************************/ - NextDefiniteWithGap(x, link, y, g, jn); + NextDefiniteWithGapLDN(x, link, y, g, jn, mk, dim, NO_SUPPRESS, pg); while( link != x ) { if( mode(gap(g)) == TAB_MODE && units(gap(g)) == AVAIL_UNIT && @@ -749,7 +793,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, mk += ActualGap(afwd, back(y, dim), fwd(y, dim), &gap(g), frame_size, mk - back_edge); prev = y; - NextDefiniteWithGap(x, link, y, g, jn); + NextDefiniteWithGapLDN(x, link, y, g, jn, mk, dim, NO_SUPPRESS, pg); } /*******************************************************************/ @@ -792,7 +836,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, FULL_LENGTH b, f, dlen; start_group = nilobj; dble_found = FALSE; dlen = 0; debug0(DGP, DD, " groups beginning."); - FirstDefinite(x, link, y, jn); + FirstDefiniteLDN(x, link, y, jn, xmk, dim, NO_SUPPRESS, pg); if( link != x ) { /* start first group, with or without join */ @@ -805,7 +849,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, Image(type(y)), dble_found ? "" : "not ", EchoLength(b), EchoLength(f)); - NextDefiniteWithGap(x, link, y, g, jn); + NextDefiniteWithGapLDN(x, link, y, g, jn, xmk, dim, NO_SUPPRESS, pg); while( link != x ) { if( !jn ) @@ -845,7 +889,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, EchoLength(b), EchoLength(f)); } - NextDefiniteWithGap(x, link, y, g, jn); + NextDefiniteWithGapLDN(x, link, y, g, jn, xmk, dim, NO_SUPPRESS, pg); } assert( start_group != nilobj, "FAPO: final start_group!" ); @@ -892,11 +936,13 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, if( dim == COLM ) { BOOLEAN will_adjust, adjusting; - FULL_LENGTH actual_size, - adjust_indent, frame_size, back_edge, adjust_inc, inc, adjust_sofar; - int adjustable_gaps, gaps_sofar; - BOOLEAN underlining; int underline_xstart; - FONT_NUM underline_font; COLOUR_NUM underline_colour; + FULL_LENGTH actual_size, adjust_indent, frame_size, back_edge; + FULL_LENGTH adjust_inc, inc = 0, adjust_sofar = 0; + int adjustable_gaps, gaps_sofar = 0; + BOOLEAN underlining; int underline_xstart = 0; + FONT_NUM underline_font = 0; + COLOUR_NUM underline_colour = 0; + TEXTURE_NUM underline_texture = 0; OBJECT urec, last_bad_gap; @@ -916,7 +962,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, /* */ /*********************************************************************/ - FirstDefinite(x, link, y, jn); + FirstDefinite(x, link, y, jn); /* no LDN since this is initial pass */ if( link == x ) { *actual_back = back(x, dim); *actual_fwd = fwd(x, dim); @@ -938,7 +984,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, mk = back_edge + back(y, dim); frame_size = xb + xf; prev = y; - NextDefiniteWithGap(x, link, y, g, jn); + NextDefiniteWithGap(x, link, y, g, jn); /* no LDN, initial pass */ while( link != x ) { save_actual_gap(g) = ActualGap(fwd(prev, dim), back(y, dim), @@ -951,7 +997,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, } else if( width(gap(g)) > 0 ) adjustable_gaps++; prev = y; - NextDefiniteWithGap(x, link, y, g, jn); + NextDefiniteWithGap(x, link, y, g, jn); /* no LDN, initial pass */ } actual_size = mk + fwd(prev, dim) - back_edge; @@ -1111,10 +1157,10 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, underlining = FALSE; adjusting = will_adjust && last_bad_gap == nilobj; - FirstDefinite(x, link, y, jn); + FirstDefiniteLDN(x, link, y, jn, xmk, dim, NO_SUPPRESS, pg); prev = y; mk = xmk - back(x, dim) + back(y, dim) + adjust_indent; - NextDefiniteWithGap(x, link, y, g, jn); + NextDefiniteWithGapLDN(x, link, y, g, jn, mk, dim, NO_SUPPRESS, pg); while( link != x ) { /* check for underlining */ @@ -1128,10 +1174,18 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, underlining = TRUE; debug2(DGP, DD, "underlining begins at %s %s", Image(type(prev)), EchoObject(prev)); - underline_font = is_word(type(prev)) ? word_font(prev) : - font(save_style(x)); - underline_colour = is_word(type(prev)) ? word_colour(prev) : - colour(save_style(x)); + if( is_word(type(prev)) ) + { + underline_font = word_font(prev); + underline_colour = word_colour(prev); + underline_texture = word_texture(prev); + } + else + { + underline_font = font(save_style(x)); + underline_colour = colour(save_style(x)); + underline_texture = texture(save_style(x)); + } underline_xstart = mk - back(prev, dim); } if( underline(g) == UNDER_OFF ) @@ -1142,8 +1196,9 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, New(urec, UNDER_REC); back(urec, COLM) = underline_xstart; fwd(urec, COLM) = mk + fwd(prev, dim); - back(urec, ROWM) = underline_font; - fwd(urec, ROWM) = underline_colour; + word_font(urec) = underline_font; + word_colour(urec) = underline_colour; + word_texture(urec) = underline_texture; underlining = FALSE; Link(Up(prev), urec); } @@ -1173,7 +1228,7 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, if( !adjusting && will_adjust && g == last_bad_gap ) adjusting = TRUE; - NextDefiniteWithGap(x, link, y, g, jn); + NextDefiniteWithGapLDN(x, link, y, g, jn, mk, dim, NO_SUPPRESS, pg); } /* check for underlining */ @@ -1193,10 +1248,18 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, debug2(DGP, DD, "underlining begins at %s %s", Image(type(prev)), EchoObject(prev)); underlining = TRUE; - underline_font = is_word(type(prev)) ? word_font(prev) : - font(save_style(x)); - underline_colour = is_word(type(prev)) ? word_colour(prev) : - colour(save_style(x)); + if( is_word(type(prev)) ) + { + underline_font = word_font(prev); + underline_colour = word_colour(prev); + underline_texture = word_texture(prev); + } + else + { + underline_font = font(save_style(x)); + underline_colour = colour(save_style(x)); + underline_texture = texture(save_style(x)); + } underline_xstart = mk - back(prev, dim); } @@ -1206,8 +1269,9 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, New(urec, UNDER_REC); back(urec, COLM) = underline_xstart; fwd(urec, COLM) = mk + fwd(prev, dim); - back(urec, ROWM) = underline_font; - fwd(urec, ROWM) = underline_colour; + word_font(urec) = underline_font; + word_colour(urec) = underline_colour; + word_texture(urec) = underline_texture; underlining = FALSE; Link(Up(prev), urec); } @@ -1221,11 +1285,11 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, } else for( link = Down(x); link != x; link = NextDown(link) ) { Child(y, link); - if( !is_definite(type(y)) ) + if( !is_definite(type(y)) && type(y) != LINK_DEST_NULL ) { if( type(y) == UNDER_REC ) /* generate an underline now */ - { BackEnd->PrintUnderline(back(y, ROWM), fwd(y, ROWM), back(y, COLM), - fwd(y, COLM), pg - xmk); + { BackEnd->PrintUnderline(word_font(y),word_colour(y), + word_colour(y), back(y, COLM), fwd(y, COLM), pg - xmk); link = PrevDown(link); /* remove all trace of underlining */ DisposeChild(Up(y)); /* in case we print this object again */ } @@ -1251,7 +1315,13 @@ OBJECT FixAndPrintObject(OBJECT x, FULL_LENGTH xmk, FULL_LENGTH xb, Image(type(x)), EchoLength(back(x, dim)), EchoLength(fwd(x, dim)), i, Image(type(y)), EchoLength(back(y, dim)), EchoLength(fwd(y, dim))); + + /* This line seems to have been an optimization. It won't + * work if we are inside a running header, since subsequent + * passes will have forgotten the thread. JeffK 13/11/02 MoveLink(uplink, link, CHILD); DeleteLink(link); + */ + assert( type(y) != GAP_OBJ, "FAPO: THR!"); if( thr_state(x) != FINALSIZE ) |