diff options
Diffstat (limited to 'metapost/context/base/mp-core.mp')
| -rw-r--r-- | metapost/context/base/mp-core.mp | 716 |
1 files changed, 435 insertions, 281 deletions
diff --git a/metapost/context/base/mp-core.mp b/metapost/context/base/mp-core.mp index 72347734f..64ac0dfff 100644 --- a/metapost/context/base/mp-core.mp +++ b/metapost/context/base/mp-core.mp @@ -39,10 +39,10 @@ def initialize_box_pos (expr pos,n,x,y,w,h,d) = pxy := llxy--lrxy--urxy--ulxy--cycle ; cxy := center pxy ; nxy := n ; - freeze_box(pos) ; + freeze_box(pos) ; enddef ; -def freeze_box (expr pos) = +def freeze_box (expr pos) = lxy[pos] := lxy ; llxy[pos] := llxy ; lrxy[pos] := lrxy ; @@ -55,7 +55,7 @@ def freeze_box (expr pos) = pxy[pos] := pxy ; cxy[pos] := cxy ; nxy[pos] := nxy ; -enddef ; +enddef ; def initialize_box (expr n,x,y,w,h,d) = @@ -88,13 +88,13 @@ def do_initialize_area (expr fpos, tpos) = enddef ; def set_par_line_height (expr ph, pd) = - par_strut_height := - if ph>0 : ph elseif StrutHeight>0 : StrutHeight else : 8pt fi ; + par_strut_height := + if ph>0 : ph elseif StrutHeight>0 : StrutHeight else : 8pt fi ; par_strut_depth := - if pd>0 : pd elseif StrutDepth >0 : StrutDepth else : 3pt fi ; - par_line_height := + if pd>0 : pd elseif StrutDepth >0 : StrutDepth else : 3pt fi ; + par_line_height := par_strut_height + par_strut_depth ; -enddef ; +enddef ; def initialize_par (expr fn,fx,fy,fw,fh,fd, tn,tx,ty,tw,th,td, @@ -109,7 +109,7 @@ def initialize_par (expr fn,fx,fy,fw,fh,fd, numeric par_strut_height, par_strut_depth, par_line_height ; - set_par_line_height (ph, pd) ; + set_par_line_height (ph, pd) ; do_initialize_area (fpos, tpos) ; do_initialize_par (fpos, tpos, mpos, ppos, rw,rl,rr,rh,ra,ri) ; @@ -126,14 +126,14 @@ def initialize_area_par (expr fn,fx,fy,fw,fh,fd, numeric par_strut_height, par_strut_depth, par_line_height ; - set_par_line_height (wh, wd) ; + set_par_line_height (wh, wd) ; numeric ffpos ; ffpos := 4 ; initialize_box_pos(ffpos,wn,wx,fy,0,wh,wd) ; numeric ttpos ; ttpos := 5 ; initialize_box_pos(ttpos,wn,wx+ww,ty,0,wh,wd) ; - do_initialize_area (ffpos, ttpos) ; + do_initialize_area (ffpos, ttpos) ; - numeric mpos ; mpos := 6 ; freeze_box(mpos) ; + numeric mpos ; mpos := 6 ; freeze_box(mpos) ; % do_initialize_area (fpos, tpos) ; do_initialize_par (fpos, tpos, mpos, ffpos, 0,0,0,0,0,0) ; @@ -142,92 +142,92 @@ enddef ; def do_initialize_par (expr fpos, tpos, mpos, ppos, rw,rl,rr,rh,ra,ri) = - pair lref, rref, pref, lhref, rhref ; + pair lref, rref, pref, lhref, rhref ; % clip the page area to the left and right skips - llxy[mpos] := llxy[mpos] shifted (+rl,0) ; - lrxy[mpos] := lrxy[mpos] shifted (-rr,0) ; - urxy[mpos] := urxy[mpos] shifted (-rr,0) ; - ulxy[mpos] := ulxy[mpos] shifted (+rl,0) ; + llxy[mpos] := llxy[mpos] shifted (+rl,0) ; + lrxy[mpos] := lrxy[mpos] shifted (-rr,0) ; + urxy[mpos] := urxy[mpos] shifted (-rr,0) ; + ulxy[mpos] := ulxy[mpos] shifted (+rl,0) ; % fixate the leftskip, rightskip and hanging indentation - - lref := (xpart llxy[mpos],ypart ulxy[ppos]) ; lhref := lref shifted (rh,0) ; - rref := (xpart lrxy[mpos],ypart urxy[ppos]) ; rhref := rref shifted (rh,0) ; - - pref := lxy[ppos] ; - - if nxy[tpos] > nxy[fpos] : - if nxy[fpos] = nxy[mpos] : - % first of multiple pages - llxy[tpos] := llxy[mpos] ; - lrxy[tpos] := lrxy[mpos] ; - urxy[tpos] := lrxy[mpos] shifted (0,par_line_height) ; - ulxy[tpos] := llxy[mpos] shifted (0,par_line_height) ; - boxgriddirection := down ; - elseif nxy[tpos] = nxy[mpos] : - % last of multiple pages - llxy[fpos] := ulxy[mpos] shifted (0,-par_line_height) ; - lrxy[fpos] := urxy[mpos] shifted (0,-par_line_height) ; - urxy[fpos] := urxy[mpos] ; - ulxy[fpos] := ulxy[mpos] ; - boxgriddirection := up ; - else : - % middle of multiple pages - llxy[fpos] := ulxy[mpos] shifted (0,-par_line_height) ; - lrxy[fpos] := urxy[mpos] shifted (0,-par_line_height) ; - urxy[fpos] := urxy[mpos] ; - ulxy[fpos] := ulxy[mpos] ; - llxy[tpos] := llxy[mpos] ; - lrxy[tpos] := lrxy[mpos] ; - urxy[tpos] := lrxy[mpos] shifted (0,par_line_height) ; - ulxy[tpos] := llxy[mpos] shifted (0,par_line_height) ; - boxgriddirection := up ; + + lref := (xpart llxy[mpos],ypart ulxy[ppos]) ; lhref := lref shifted (rh,0) ; + rref := (xpart lrxy[mpos],ypart urxy[ppos]) ; rhref := rref shifted (rh,0) ; + + pref := lxy[ppos] ; + + if nxy[tpos] > nxy[fpos] : + if nxy[fpos] = nxy[mpos] : + % first of multiple pages + llxy[tpos] := llxy[mpos] ; + lrxy[tpos] := lrxy[mpos] ; + urxy[tpos] := lrxy[mpos] shifted (0,par_line_height) ; + ulxy[tpos] := llxy[mpos] shifted (0,par_line_height) ; + boxgriddirection := down ; + elseif nxy[tpos] = nxy[mpos] : + % last of multiple pages + llxy[fpos] := ulxy[mpos] shifted (0,-par_line_height) ; + lrxy[fpos] := urxy[mpos] shifted (0,-par_line_height) ; + urxy[fpos] := urxy[mpos] ; + ulxy[fpos] := ulxy[mpos] ; + boxgriddirection := up ; + else : + % middle of multiple pages + llxy[fpos] := ulxy[mpos] shifted (0,-par_line_height) ; + lrxy[fpos] := urxy[mpos] shifted (0,-par_line_height) ; + urxy[fpos] := urxy[mpos] ; + ulxy[fpos] := ulxy[mpos] ; + llxy[tpos] := llxy[mpos] ; + lrxy[tpos] := lrxy[mpos] ; + urxy[tpos] := lrxy[mpos] shifted (0,par_line_height) ; + ulxy[tpos] := llxy[mpos] shifted (0,par_line_height) ; + boxgriddirection := up ; fi ; - else : - % just one page - boxgriddirection := up ; - fi ; + else : + % just one page + boxgriddirection := up ; + fi ; - path txy, bxy, pxy, mxy ; + path txy, bxy, pxy, mxy ; - txy := originpath ; % top - bxy := originpath ; % bottom + txy := originpath ; % top + bxy := originpath ; % bottom pxy := originpath ; % composed - boolean lefthang, righthang, somehang ; + boolean lefthang, righthang, somehang ; - % we only hang on the first of a multiple page background + % we only hang on the first of a multiple page background - if nxy[mpos] > nxy[fpos] : - lefthang := righthang := somehang := false ; - else : - lefthang := (rh>0) ; righthang := (rh<0) ; somehang := false ; - fi ; + if nxy[mpos] > nxy[fpos] : + lefthang := righthang := somehang := false ; + else : + lefthang := (rh>0) ; righthang := (rh<0) ; somehang := false ; + fi ; if lefthang : - mxy := boundingbox (lref -- lref shifted (rh,ra*par_line_height)) ; - elseif righthang : - mxy := boundingbox (rref -- rref shifted (rh,ra*par_line_height)) ; + mxy := boundingbox (lref -- lref shifted (rh,ra*par_line_height)) ; + elseif righthang : + mxy := boundingbox (rref -- rref shifted (rh,ra*par_line_height)) ; else : - mxy := originpath ; + mxy := originpath ; fi ; - if round(ypart llxy[fpos]) = round(ypart llxy[tpos]) : + if round(ypart llxy[fpos]) = round(ypart llxy[tpos]) : % We have a one-liner. Watch how er use the bottom pos for % determining the height. - llxy[fpos] := (xpart llxy[fpos], ypart llxy[tpos]) ; - ulxy[fpos] := (xpart ulxy[fpos], ypart ulxy[tpos]) ; + llxy[fpos] := (xpart llxy[fpos], ypart llxy[tpos]) ; + ulxy[fpos] := (xpart ulxy[fpos], ypart ulxy[tpos]) ; - else : + else : - % We have a multi-liner. For convenience we now correct the - % begin and end points for indentation. + % We have a multi-liner. For convenience we now correct the + % begin and end points for indentation. - if lefthang and (round(ypart llxy[tpos]) >= round(ypart lrcorner mxy)) : + if lefthang and (round(ypart llxy[tpos]) >= round(ypart lrcorner mxy)) : llxy[tpos] := (xpart lhref, ypart llxy[tpos]) ; ulxy[tpos] := (xpart lhref, ypart ulxy[tpos]) ; else : @@ -240,26 +240,26 @@ def do_initialize_par (expr fpos, tpos, mpos, ppos, rw,rl,rr,rh,ra,ri) = urxy[fpos] := (xpart rhref, ypart urxy[fpos]) ; else : lrxy[fpos] := (xpart rref, ypart lrxy[fpos]) ; - urxy[fpos] := (xpart rref, ypart urxy[fpos]) ; + urxy[fpos] := (xpart rref, ypart urxy[fpos]) ; fi ; - fi ; + fi ; - somehang := (ypart ulxy[fpos]>ypart llcorner mxy) and + somehang := (ypart ulxy[fpos]>ypart llcorner mxy) and (ypart llxy[tpos]<ypart llcorner mxy) ; - if round(ypart llxy[fpos]) = round(ypart llxy[tpos]) : + if round(ypart llxy[fpos]) = round(ypart llxy[tpos]) : - % A (short) one-liner goes into the top box. + % A (short) one-liner goes into the top box. txy := llxy[fpos] -- lrxy[tpos] -- urxy[tpos] -- ulxy[fpos] -- cycle ; elseif (round(ypart llxy[fpos]) = round(ypart ulxy[tpos])) and (round(xpart lrxy[tpos]) < round(xpart llxy[fpos])) : - % We have a sentence that spans two lines but with only end - % of line and begin of line segments. We need to take care of - % indentation. + % We have a sentence that spans two lines but with only end + % of line and begin of line segments. We need to take care of + % indentation. txy := llxy[fpos] -- lrxy[fpos] -- urxy[fpos] -- ulxy[fpos] -- cycle ; bxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- ulxy[tpos] -- cycle ; @@ -271,92 +271,92 @@ def do_initialize_par (expr fpos, tpos, mpos, ppos, rw,rl,rr,rh,ra,ri) = pxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- lrxy[fpos] -- urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- ulxy[tpos] -- cycle ; - elseif lefthang and somehang : + elseif lefthang and somehang : - % We have a sentence that spans more than two lines with - % left hanging indentation. + % We have a sentence that spans more than two lines with + % left hanging indentation. - pxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- + pxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- (xpart urxy[fpos],ypart urxy[tpos]) -- - urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- - if round(ypart urxy[tpos]) < round(ypart llcorner mxy) : - (xpart lrcorner mxy,ypart llxy[fpos]) -- - lrcorner mxy -- - (xpart llxy[tpos],ypart llcorner mxy) -- - else : - (xpart llxy[tpos],ypart llxy[fpos]) -- - fi + urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- + if round(ypart urxy[tpos]) < round(ypart llcorner mxy) : + (xpart lrcorner mxy,ypart llxy[fpos]) -- + lrcorner mxy -- + (xpart llxy[tpos],ypart llcorner mxy) -- + else : + (xpart llxy[tpos],ypart llxy[fpos]) -- + fi cycle ; elseif righthang and somehang : - % We have a sentence that spans more than two lines with - % right hanging indentation. + % We have a sentence that spans more than two lines with + % right hanging indentation. - pxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- - if round(ypart urxy[tpos]) < round(ypart llcorner mxy) : + pxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- + if round(ypart urxy[tpos]) < round(ypart llcorner mxy) : (xpart lrcorner mxy,ypart urxy[tpos]) -- lrcorner mxy -- llcorner mxy -- - else : + else : (xpart urxy[fpos],ypart urxy[tpos]) -- - fi - urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- - (xpart llxy[tpos],ypart llxy[fpos]) -- + fi + urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- + (xpart llxy[tpos],ypart llxy[fpos]) -- cycle ; - else : + else : - % We have a sentence that spans more than two lines with - % no hanging indentation. + % We have a sentence that spans more than two lines with + % no hanging indentation. - pxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- + pxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- (xpart urxy[fpos],ypart urxy[tpos]) -- - urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- + urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- (xpart llxy[tpos],ypart llxy[fpos]) -- cycle ; fi ; - pxy := simplified pxy ; - pxy := unspiked pxy ; + pxy := simplified pxy ; + pxy := unspiked pxy ; enddef ; -TopSkip := 0 ; % will move -StrutHeight := 0 ; % will move - -pair last_multi_par_shift ; last_multi_par_shift := origin ; +TopSkip := 0 ; % will move +StrutHeight := 0 ; % will move + +pair last_multi_par_shift ; last_multi_par_shift := origin ; -def relocate_multipars (expr xy) = - last_multi_par_shift := xy ; - for i=1 upto nofmultipars : +def relocate_multipars (expr xy) = + last_multi_par_shift := xy ; + for i=1 upto nofmultipars : multipars[i] := multipars[i] shifted last_multi_par_shift ; - endfor ; -enddef ; - -boolean compensate_multi_par_topskip ; -boolean span_multi_column_pars ; -boolean auto_multi_par_hsize ; + endfor ; +enddef ; + +boolean compensate_multi_par_topskip ; +boolean span_multi_column_pars ; +boolean auto_multi_par_hsize ; boolean enable_multi_par_fallback ; -compensate_multi_par_topskip := true ; +compensate_multi_par_topskip := true ; span_multi_column_pars := false ; auto_multi_par_hsize := false ; % true ; enable_multi_par_fallback := true ; -vardef multi_par_at_top (expr i) = - (round (ypart ulcorner multipars[i]) = round (ypart ulcorner +vardef multi_par_at_top (expr i) = + (round (ypart ulcorner multipars[i]) = round (ypart ulcorner (TextAreas[multirefs[i]] shifted last_multi_par_shift))) -enddef ; +enddef ; -numeric nofmultipars ; nofmultipars := 0 ; +numeric nofmultipars ; nofmultipars := 0 ; boolean obey_multi_par_hang ; obey_multi_par_hang := true ; boolean obey_multi_par_more ; obey_multi_par_more := true ; boolean snap_multi_par_tops ; snap_multi_par_tops := true ; -boolean local_multi_par_area ; local_multi_par_area := false ; -boolean ignore_multi_par_page ; ignore_multi_par_page := false ; +boolean local_multi_par_area ; local_multi_par_area := false ; +boolean ignore_multi_par_page ; ignore_multi_par_page := false ; -boolean one_piece_multi_par ; one_piece_multi_par := false ; +boolean one_piece_multi_par ; one_piece_multi_par := false ; def simplify_multi_pars = % boundingbox ipv shape als optie for i := 1 upto nofmultipars : @@ -387,30 +387,30 @@ def prepare_multi_pars (expr fn,fx,fy,fw,fh,fd, NOfTextAreas := NOfTextColumns ; fi ; - last_multi_par_shift := origin ; + last_multi_par_shift := origin ; numeric fpos ; fpos := 1 ; initialize_box_pos(fpos,fn,fx,fy,fw,fh,fd) ; numeric tpos ; tpos := 2 ; initialize_box_pos(tpos,tn,tx,ty,tw,th,td) ; numeric wpos ; wpos := 3 ; initialize_box_pos(wpos,wn,wx,wy,ww,wh,wd) ; numeric ppos ; ppos := 4 ; initialize_box_pos(ppos,pn,px,py,pw,ph,pd) ; - if local_multi_par_area : - RealPageNumber := fn ; - NOfTextAreas := 1 ; - NOfSavedTextAreas := 0 ; + if local_multi_par_area : + RealPageNumber := fn ; + NOfTextAreas := 1 ; + NOfSavedTextAreas := 0 ; TextAreas[1] := TextAreas[0] ; TextColumns[1] := TextColumns[0] ; - nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ; + nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ; % draw TextColumns[1] withcolor green ; % draw TextAreas[1] withcolor green ; elseif ignore_multi_par_page : - RealPageNumber := fn ; - nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ; - fi ; + RealPageNumber := fn ; + nxy[fpos] := nxy[tpos] := nxy[wpos] := nxy[ppos] := RealPageNumber ; + fi ; numeric par_strut_height, par_strut_depth, par_line_height ; - set_par_line_height (ph, pd) ; + set_par_line_height (ph, pd) ; numeric par_hang_indent, par_hang_after, par_indent, par_left_skip ; @@ -423,8 +423,8 @@ def prepare_multi_pars (expr fn,fx,fy,fw,fh,fd, % par_start_pos := llxy[fpos] if par_indent<0: shifted (-par_indent,0) fi ; - par_start_pos := llxy[fpos] - if par_indent <0: shifted (-par_indent, 0) fi + par_start_pos := llxy[fpos] + if par_indent <0: shifted (-par_indent, 0) fi if par_left_skip<0: shifted (-par_left_skip,0) fi ; if wxy[wpos]>0 : @@ -439,28 +439,28 @@ def prepare_multi_pars (expr fn,fx,fy,fw,fh,fd, numeric multiref, multirefs[] ; numeric multiloc, multilocs[] ; % 1=begin 2=between 3=end - numeric multi_par_pages ; multi_par_pages := nxy[tpos]-nxy[fpos]+1 ; + numeric multi_par_pages ; multi_par_pages := nxy[tpos]-nxy[fpos]+1 ; ii := 0 ; nn := NOfTextAreas+1 ; nofmultipars := 0 ; vardef snapped_multi_pos (expr p) = if snap_multi_par_tops : if abs(ypart p - ypart ulcorner multipar) < par_line_height : - (xpart p,ypart ulcorner multipar) - else : - p - fi + (xpart p,ypart ulcorner multipar) + else : + p + fi else : - p - fi - enddef ; + p + fi + enddef ; % def set_multipar (expr i) = % ((TextAreas[i] leftenlarged -left_skip) rightenlarged -right_skip) % enddef ; vardef set_multipar (expr i) = - ( (TextAreas[i] leftenlarged -left_skip) rightenlarged (-right_skip + ( (TextAreas[i] leftenlarged -left_skip) rightenlarged (-right_skip if auto_multi_par_hsize : + rw - bbwidth(TextAreas[i]) fi) ) enddef ; @@ -518,7 +518,7 @@ def prepare_multi_pars (expr fn,fx,fy,fw,fh,fd, par_hang_after := ra + estimated_par_lines(py-fy) ; if (par_hang_indent>0) and (par_hang_after<0) and obey_multi_par_hang : - pair _ul_ ; _ul_ := (xpart ulcorner multipar, ypart snapped_multi_pos(ulxy[fpos])); + pair _ul_ ; _ul_ := (xpart ulcorner multipar, ypart snapped_multi_pos(ulxy[fpos])); pair _pa_ ; _pa_ := _ul_ shifted (0,par_hang_after*par_line_height) ; _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ; if same_area : @@ -660,11 +660,7 @@ fi ; vardef x_left_bottom_hang (expr i, t) = pair _ll_, _sa_, _pa_ ; -if t : - _sa_ := llxy[tpos] ; -else : - _sa_ := llcorner multipar ; -fi ; + _sa_ := if t : llxy[tpos] else : llcorner multipar fi ; if (par_hang_indent>0) and (ra>0) : par_hang_after := max(0,ra - estimated_multi_par_height(i,t)) ; _ll_ := ulcorner multipar ; @@ -684,11 +680,7 @@ fi ; vardef x_right_bottom_hang (expr i, t) = pair _lr_, _sa_, _pa_ ; -if t : - _sa_ := snapped_multi_pos(ulxy[tpos]) ; -else : - _sa_ := llcorner multipar ; -fi ; + _sa_ := if t : snapped_multi_pos(ulxy[tpos]) else : llcorner multipar fi ; if (par_hang_indent<0) and (ra>0) : par_hang_after := max(0,ra - estimated_multi_par_height(i, t)) ; _lr_ := urcorner multipar ; @@ -707,36 +699,37 @@ fi ; enddef ; def test_multipar = - multipar := - llcorner multipar -- - urcorner multipar -- - lrcorner multipar -- - ulcorner multipar -- - cycle ; +% multipar := +% llcorner multipar -- +% urcorner multipar -- +% lrcorner multipar -- +% ulcorner multipar -- +% cycle ; + multipar := boundingbox multipar ; enddef ; - % first loop + % first loop + + if enable_multi_par_fallback and + (nxy[fpos]=RealPageNumber) and + (nxy[tpos]=RealPageNumber) and not + (InsideSomeTextArea(lxy[fpos]) and + InsideSomeTextArea(rxy[tpos])) : - if enable_multi_par_fallback and - (nxy[fpos]=RealPageNumber) and - (nxy[tpos]=RealPageNumber) and not - (InsideSomeTextArea(lxy[fpos]) and - InsideSomeTextArea(rxy[tpos])) : + % fallback - % fallback + multipar := - multipar := - - llxy[fpos] -- - lrxy[tpos] -- - urxy[tpos] -- + llxy[fpos] -- + lrxy[tpos] -- + urxy[tpos] -- ulxy[fpos] -- cycle ; - + save_multipar (1,1,multipar) ; else : - % normal + % normal for i=1 upto NOfTextAreas : @@ -779,23 +772,23 @@ fi ; llxy[fpos] -- lrxy[tpos] -- %urxy[tpos] -- - snapped_multi_pos(urxy[tpos]) -- + snapped_multi_pos(urxy[tpos]) -- %ulxy[fpos] -- - snapped_multi_pos(ulxy[fpos]) -- + snapped_multi_pos(ulxy[fpos]) -- cycle ; save_multipar (i,1,multipar) ; - elseif (ypart llxy[fpos] = ypart ulxy[tpos]) and + elseif (ypart llxy[fpos] = ypart ulxy[tpos]) and (xpart llxy[tpos] < xpart llxy[fpos]) : - % two loners + % two loners multipar := if obey_multi_par_hang : right_bottom_hang(true) -- right_top_hang(true) -- - snapped_multi_pos(urxy[fpos]) -- + snapped_multi_pos(urxy[fpos]) -- lrxy[fpos] -- else : @@ -803,7 +796,7 @@ fi ; llxy[fpos] -- (xpart urcorner multipar, ypart llxy[fpos]) -- (xpart urcorner multipar, ypart ulxy[fpos]) -- - snapped_multi_pos(ulxy[fpos]) -- + snapped_multi_pos(ulxy[fpos]) -- fi cycle ; @@ -815,14 +808,14 @@ fi ; left_bottom_hang(true) -- llxy[tpos] -- - snapped_multi_pos(ulxy[tpos]) -- + snapped_multi_pos(ulxy[tpos]) -- left_top_hang(true) -- else : (xpart llcorner multipar, ypart llxy[tpos]) -- llxy[tpos] -- - snapped_multi_pos(ulxy[tpos]) -- + snapped_multi_pos(ulxy[tpos]) -- (xpart llcorner multipar, ypart ulxy[tpos]) -- fi cycle ; @@ -836,11 +829,11 @@ fi ; left_bottom_hang(true) -- llxy[tpos] -- %ulxy[tpos] -- - snapped_multi_pos(ulxy[tpos]) -- + snapped_multi_pos(ulxy[tpos]) -- right_bottom_hang(true) -- right_top_hang(true) -- %urxy[fpos] -- - snapped_multi_pos(urxy[fpos]) -- + snapped_multi_pos(urxy[fpos]) -- lrxy[fpos] -- left_top_hang(true) -- @@ -848,19 +841,19 @@ fi ; (xpart llcorner multipar, ypart llxy[tpos]) -- llxy[tpos] -- - %ulxy[tpos] -- - snapped_multi_pos(ulxy[tpos]) -- + %ulxy[tpos] -- + snapped_multi_pos(ulxy[tpos]) -- (xpart lrcorner multipar, ypart ulxy[tpos]) -- (xpart urcorner multipar, ypart urxy[fpos]) -- %urxy[fpos] -- - snapped_multi_pos(urxy[fpos]) -- + snapped_multi_pos(urxy[fpos]) -- lrxy[fpos] -- (xpart ulcorner multipar, ypart lrxy[fpos]) -- fi cycle ; save_multipar (i,1,multipar) ; - + fi ; else : @@ -871,7 +864,7 @@ fi ; right_bottom_hang(false) -- right_top_hang(false) -- %urxy[fpos] -- - snapped_multi_pos(urxy[fpos]) -- + snapped_multi_pos(urxy[fpos]) -- lrxy[fpos] -- left_top_hang(false) -- @@ -881,7 +874,7 @@ fi ; lrcorner multipar -- (xpart urcorner multipar, ypart urxy[fpos]) -- %urxy[fpos] -- - snapped_multi_pos(urxy[fpos]) -- + snapped_multi_pos(urxy[fpos]) -- lrxy[fpos] -- (xpart ulcorner multipar, ypart lrxy[fpos]) -- @@ -904,7 +897,7 @@ fi ; x_right_top_hang(i,true) -- x_right_bottom_hang(i,true) -- % ulxy[tpos] -- -snapped_multi_pos(ulxy[tpos]) -- +snapped_multi_pos(ulxy[tpos]) -- llxy[tpos] -- x_left_bottom_hang(i,true) -- cycle ; @@ -916,7 +909,7 @@ snapped_multi_pos(ulxy[tpos]) -- urcorner multipar -- (xpart lrcorner multipar, ypart urxy[tpos]) -- % ulxy[tpos] -- -snapped_multi_pos(ulxy[tpos]) -- +snapped_multi_pos(ulxy[tpos]) -- llxy[tpos] -- (xpart llcorner multipar, ypart llxy[tpos]) -- cycle ; @@ -925,15 +918,15 @@ snapped_multi_pos(ulxy[tpos]) -- save_multipar (i,3,multipar) ; - else : + else : + + % handled later - % handled later - fi ; endfor ; - % second loop + % second loop for i=ii+1 upto nn-1 : @@ -956,19 +949,19 @@ snapped_multi_pos(ulxy[tpos]) -- save_multipar(i,2,multipar) ; -%fi ; +%fi ; endfor ; - % end of normal/fallback + % end of normal/fallback -fi ; +fi ; if span_multi_column_pars : endgroup ; fi ; - % quick hack for gb: + % quick hack for gb: one_piece_multi_par := (nofmultipars=1) and (pn=tn) ; @@ -983,8 +976,8 @@ numeric boxfilltype ; boxfilltype := 1 ; pair boxgriddirection ; boxgriddirection := up ; numeric boxgridwidth ; boxgridwidth := 1pt ; numeric boxlinewidth ; boxlinewidth := 1pt ; -numeric boxlineradius ; boxlineradius := 0pt ; -numeric boxfilloffset ; boxfilloffset := 0pt ; +numeric boxlineradius ; boxlineradius := 0pt ; +numeric boxfilloffset ; boxfilloffset := 0pt ; numeric boxgriddistance ; boxgriddistance := .5cm ; def draw_box = @@ -992,19 +985,19 @@ def draw_box = draw lxy -- rxy withcolor boxlinecolor withpen pencircle scaled boxgridwidth ; enddef ; -def draw_par = % 1 2 3 11 12 +def draw_par = % 1 2 3 11 12 do_draw_par(pxy) ; do_draw_par(txy) ; do_draw_par(bxy) ; for i = pxy, txy, bxy : if boxgridtype= 1 : - boxgriddirection := origin ; + boxgriddirection := origin ; draw baseline_grid (i,boxgriddirection,true ) withcolor boxgridcolor ; elseif boxgridtype= 2 : - boxgriddirection := origin ; + boxgriddirection := origin ; draw baseline_grid (i,boxgriddirection,false) withcolor boxgridcolor ; elseif boxgridtype= 3 : - boxgriddirection := origin ; + boxgriddirection := origin ; draw baseline_grid (i,boxgriddirection,true ) withcolor boxgridcolor ; - draw baseline_grid (i,boxgriddirection,true ) + draw baseline_grid (i,boxgriddirection,true ) shifted (0,ExHeight) withcolor boxgridcolor ; elseif boxgridtype=11 : draw graphic_grid(i,boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ; @@ -1016,50 +1009,50 @@ enddef ; def do_show_par (expr p, r, c) = if length(p) > 2 : for i=0 upto length(p) : - draw fullcircle scaled r shifted point i of p + draw fullcircle scaled r shifted point i of p withpen pencircle scaled .5pt withcolor c ; endfor ; fi ; draw p withpen pencircle scaled .5pt withcolor c ; -enddef ; +enddef ; def show_par = - if length(mxy) > 2 : - draw mxy dashed evenly - withpen pencircle scaled .5pt withcolor .5white ; - fi ; + if length(mxy) > 2 : + draw mxy dashed evenly + withpen pencircle scaled .5pt withcolor .5white ; + fi ; do_show_par(txy, 4pt, .5green) ; do_show_par(bxy, 6pt, .5blue ) ; do_show_par(pxy, 8pt, .5red ) ; - draw pref withpen pencircle scaled 2pt ; + draw pref withpen pencircle scaled 2pt ; enddef ; -def sort_multi_pars = +def sort_multi_pars = if nofmultipars>1 : - begingroup ; save _p_, _n_ ; path _p_ ; numeric _n_ ; - for i := 1 upto nofmultipars : - if multilocs[i] = 3 : + begingroup ; save _p_, _n_ ; path _p_ ; numeric _n_ ; + for i := 1 upto nofmultipars : + if multilocs[i] = 3 : _p_ := multipars[nofmultipars] ; - multipars[nofmultipars] := multipars[i] ; - multipars[i] := _p_ ; + multipars[nofmultipars] := multipars[i] ; + multipars[i] := _p_ ; _n_ := multirefs[nofmultipars] ; - multirefs[nofmultipars] := multirefs[i] ; - multirefs[i] := _n_ ; + multirefs[nofmultipars] := multirefs[i] ; + multirefs[i] := _n_ ; _n_ := multilocs[nofmultipars] ; - multilocs[nofmultipars] := multilocs[i] ; - multilocs[i] := _n_ ; - fi ; + multilocs[nofmultipars] := multilocs[i] ; + multilocs[i] := _n_ ; + fi ; endfor ; - endgroup ; - fi ; -enddef ; + endgroup ; + fi ; +enddef ; -% This collapses successive areas (possibly interrupted by -% floats. First we need to sort the areas, since they are -% normally in de order start, end, inbetween. +% This collapses successive areas (possibly interrupted by +% floats. First we need to sort the areas, since they are +% normally in de order start, end, inbetween. -def collapse_multi_pars = +def collapse_multi_pars = if nofmultipars>1 : - begingroup ; save _nofmultipars_ ; numeric _nofmultipars_ ; + begingroup ; save _nofmultipars_ ; numeric _nofmultipars_ ; _nofmultipars_ := 1 ; sort_multi_pars ; % block not in order: 1, 3, 2.... for i:=1 upto nofmultipars-1 : @@ -1068,9 +1061,9 @@ def collapse_multi_pars = multilocs[_nofmultipars_] := multilocs[i+1] ; multirefs[_nofmultipars_] := multirefs[i+1] ; multipars[_nofmultipars_] := - ulcorner multipars[_nofmultipars_] -- - urcorner multipars[_nofmultipars_] -- - lrcorner multipars[i+1] -- + ulcorner multipars[_nofmultipars_] -- + urcorner multipars[_nofmultipars_] -- + lrcorner multipars[i+1] -- llcorner multipars[i+1] -- cycle ; else : _nofmultipars_ := _nofmultipars_ + 1 ; @@ -1080,83 +1073,83 @@ multirefs[_nofmultipars_] := multirefs[i+1] ; fi ; endfor ; nofmultipars := _nofmultipars_ ; - endgroup ; - fi ; + endgroup ; + fi ; enddef ; -def draw_multi_pars = - for i=1 upto nofmultipars : - do_draw_par(multipars[i]) ; +def draw_multi_pars = + for i=1 upto nofmultipars : + do_draw_par(multipars[i]) ; if boxgridtype= 1 : draw baseline_grid (multipars[i],up,true ) withcolor boxgridcolor ; elseif boxgridtype= 2 : draw baseline_grid (multipars[i],up,false) withcolor boxgridcolor ; elseif boxgridtype= 3 : draw baseline_grid (multipars[i],up,true ) withcolor boxgridcolor ; - draw baseline_grid (multipars[i],up,true ) + draw baseline_grid (multipars[i],up,true ) shifted (0,ExHeight) withcolor boxgridcolor ; elseif boxgridtype=11 : draw graphic_grid(multipars[i],boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ; elseif boxgridtype=12 : draw graphic_grid(multipars[i],boxgriddistance,boxgriddistance,0,0) ; fi ; - endfor ; -enddef ; + endfor ; +enddef ; -def show_multi_pars = - for i=1 upto nofmultipars : +def show_multi_pars = + for i=1 upto nofmultipars : do_show_par(multipars[i], 6pt, .5blue) ; - endfor ; -enddef ; + endfor ; +enddef ; vardef do_draw_par (expr p) = if (length p>2) and (bbwidth(p)>1) and (bbheight(p)>1) : - save pp ; path pp ; - if (boxlineradius>0) and (boxlinetype=2) : - pp := p cornered boxlineradius ; - else : - pp := p ; - fi ; + save pp ; path pp ; + if (boxlineradius>0) and (boxlinetype=2) : + pp := p cornered boxlineradius ; + else : + pp := p ; + fi ; if boxfilltype>0 : if boxfilloffset>0 : % temporary hack - begingroup ; interim linejoin := mitered ; + begingroup ; interim linejoin := mitered ; filldraw pp withcolor boxfillcolor withpen pencircle scaled (2*boxfilloffset) ; - endgroup ; -else : - fill pp withcolor boxfillcolor ; -fi ; + endgroup ; +else : + fill pp withcolor boxfillcolor ; +fi ; fi ; if boxlinetype>0 : - draw pp withcolor boxlinecolor withpen pencircle scaled boxlinewidth ; - fi ; + draw pp withcolor boxlinecolor withpen pencircle scaled boxlinewidth ; + fi ; fi ; enddef ; vardef baseline_grid (expr pxy, pdir, at_baseline) = if (par_line_height>0) and (bbheight(pxy)>1) and (bbwidth(pxy)>1) and (boxgridwidth>0) : save i, grid ; picture grid ; pair start ; - def _do_ (expr start) = - draw start -- start shifted (bbwidth(pxy),0) - withpen pencircle scaled boxgridwidth + def _do_ (expr start) = + draw start -- start shifted (bbwidth(pxy),0) + withpen pencircle scaled boxgridwidth withcolor boxgridcolor ; - enddef ; + enddef ; grid := image ( %fails with inlinespace % if pdir=up : for i = if at_baseline : par_strut_depth else : 0 fi - step par_line_height + step par_line_height until max(bbheight(pxy),par_line_height) : _do_ (llcorner pxy shifted (0,+i)) ; endfor ; else : for i = if at_baseline : par_strut_height else : 0 fi - step par_line_height + step par_line_height until bbheight(pxy) : _do_ (ulcorner pxy shifted (0,-i)) ; endfor ; - fi ; + fi ; ) ; clip grid to pxy ; grid @@ -1170,12 +1163,12 @@ vardef graphic_grid (expr pxy, dx, dy, x, y) = save grid ; picture grid ; grid := image ( for i = xpart llcorner pxy step dx until xpart lrcorner pxy : - draw (i,ypart llcorner pxy) -- (i,ypart ulcorner pxy) - withpen pencircle scaled boxgridwidth ; + draw (i,ypart llcorner pxy) -- (i,ypart ulcorner pxy) + withpen pencircle scaled boxgridwidth ; endfor ; for i = ypart llcorner pxy step dy until ypart ulcorner pxy : - draw (xpart llcorner pxy,i) -- (xpart lrcorner pxy,i) - withpen pencircle scaled boxgridwidth ; + draw (xpart llcorner pxy,i) -- (xpart lrcorner pxy,i) + withpen pencircle scaled boxgridwidth ; endfor ) shifted (x,y) ; clip grid to pxy ; grid @@ -1192,4 +1185,165 @@ let draw_area = draw_box ; let anchor_area = anchor_box ; let anchor_par = anchor_box ; -endinput ; +% new and experimental and yet undocumented + +numeric sync_n[], sync_p[][], sync_w[][], sync_h[][], sync_d[][], sync_t[][] ; +pair sync_xy[][] ; color sync_c[][] ; + +def ResetSyncTasks = + path SyncPaths[] ; numeric SyncTasks[], NOfSyncPaths, CurrentSyncClass ; + NOfSyncPaths := CurrentSyncClass := 0 ; + if unknown SyncLeftOffset : numeric SyncLeftOffset ; SyncLeftOffset := 0 ; fi ; + if unknown SyncWidth : numeric SyncWidth ; SyncWidth := 0 ; fi ; + if unknown SyncThreshold : numeric SyncThreshold ; SyncThreshold := LineHeight ; fi ; + if unknown SyncColor : color SyncColor ; SyncColor := .5white ; fi ; + if (SyncLeftOffset = 0) and (SyncWidth = 0) : + SyncWidth := if known TextWidth : TextWidth else : -1cm fi ; + fi ; +enddef ; + +ResetSyncTasks ; + +vardef SyncBox(expr n, i, leftoffset, width, topoffset, bottomoffset) = + save o ; pair o ; o := (xpart llcorner PlainTextArea,ypart sync_xy[n][i]) ; + o shifted (leftoffset,sync_h[n][i]+topoffset) -- + o shifted (width+leftoffset,sync_h[n][i]+topoffset) -- + o shifted (width+leftoffset,bottomoffset) -- + o shifted (leftoffset,bottomoffset) -- cycle +enddef ; + +def SetSyncColor(expr n, i, c) = + sync_c[n][i] := c ; +enddef ; + +def SetSyncThreshold(expr n, i, th) = + sync_th[n][i] := th ; +enddef ; + +vardef TheSyncColor(expr n, i) = + if known sync_c[n][i] : sync_c[n][i] else : SyncColor fi +enddef ; + +vardef TheSyncThreshold(expr n, i) = + if known sync_th[n][i] : sync_th[n][i] else : SyncThreshold fi +enddef ; + +vardef PrepareSyncTasks(expr n, collapse, extendtop, prestartnext) = + ResetSyncTasks ; + if known sync_n[n] : + CurrentSyncClass := n ; + save ok, l, d ; boolean ok ; ok := false ; NOfSyncPaths := l := 0 ; + for i=1 upto sync_n[n] : + if RealPageNumber > sync_p[n][i] : + l := i ; + elseif RealPageNumber = sync_p[n][i] : + NOfSyncPaths := NOfSyncPaths + 1 ; + if not ok : + if i>1 : + if sync_t[n][i-1] = sync_t[n][i] : + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + else : + SyncPaths[NOfSyncPaths] := SyncBox(n, i-1, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i-1 ; + NOfSyncPaths := NOfSyncPaths + 1 ; + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, 0, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + fi ; + else : + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, 0, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + fi ; + else : + SyncPaths[NOfSyncPaths] := SyncBox(n, i, SyncLeftOffset, SyncWidth, 0, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := i ; + fi ; + ok := true ; + fi ; + endfor ; + if (NOfSyncPaths = 0) and (l > 0) : + NOfSyncPaths := 1 ; + SyncPaths[NOfSyncPaths] := SyncBox(n, l, SyncLeftOffset, SyncWidth, PaperHeight, -PaperHeight) ; + SyncTasks[NOfSyncPaths] := l ; + fi ; + if NOfSyncPaths > 0 : + for i = 1 upto NOfSyncPaths-1 : + SyncPaths[i] := topboundary SyncPaths[i] -- reverse topboundary SyncPaths[i+1] -- cycle ; + endfor ; + if unknown SyncThresholdMethod : + numeric SyncThresholdMethod ; SyncThresholdMethod := 2 ; + fi ; + if extendtop : + if SyncThresholdMethod = 1 : + if NOfSyncPaths>1 : + d := ypart (ulcorner PlainTextArea - sync_xy[n][SyncTasks[2]]) ; + if (SyncTasks[2]>1) and (d > 0pt) and (d <= TheSyncThreshold(n,sync_t[n][SyncTasks[2]])) and (sync_p[n][SyncTasks[2]] = RealPageNumber) : + SyncPaths[2] := SyncPaths[2] topenlarged PaperHeight ; + fi ; + fi ; + else : + for i = 1 upto NOfSyncPaths : + d := ypart (ulcorner PlainTextArea - sync_xy[n][SyncTasks[i]]) ; + if (d > 0) and (d <= TheSyncThreshold(n,sync_t[n][SyncTasks[i]])) and (sync_p[n][SyncTasks[i]] = RealPageNumber) : + SyncPaths[i] := SyncPaths[i] topenlarged PaperHeight ; + fi ; + endfor ; + fi ; + fi ; + if prestartnext : + if NOfSyncPaths>1 : + if SyncTasks[NOfSyncPaths] < sync_n[n] : % there is a next one + d := ypart (ulcorner PlainTextArea - sync_xy[n][SyncTasks[NOfSyncPaths]+1]) ; + if (d > 0) and (d <= TheSyncThreshold(n, sync_t[n][SyncTasks[i]])) and (sync_p[n][SyncTasks[NOfSyncPaths]+1] = RealPageNumber+1) : + SyncPaths[NOfSyncPaths+1] := + (xpart ulcorner SyncPaths[NOfSyncPaths],ypart llcorner PlainTextArea) -- + (xpart urcorner SyncPaths[NOfSyncPaths],ypart llcorner PlainTextArea) -- + lrcorner SyncPaths[NOfSyncPaths] -- + llcorner SyncPaths[NOfSyncPaths] -- cycle ; + SyncTasks[NOfSyncPaths+1] := SyncTasks[NOfSyncPaths]+1 ; + NOfSyncPaths := NOfSyncPaths + 1 ; + fi ; + fi ; + fi ; + else : + if NOfSyncPaths>1 : + d := ypart (sync_xy[n][SyncTasks[NOfSyncPaths]] - llcorner PlainTextArea) ; + if (d < TheSyncThreshold(n, SyncTasks[NOfSyncPaths])) : + NOfSyncPaths := NOfSyncPaths - 1 ; + SyncPaths[NOfSyncPaths] := SyncPaths[NOfSyncPaths] bottomenlarged PaperHeight ; + fi ; + fi ; + fi ; + if (NOfSyncPaths>1) and collapse : + save j ; numeric j ; j := 1 ; + for i = 2 upto NOfSyncPaths : + if sync_t[n][SyncTasks[i]] = sync_t[n][SyncTasks[j]] : + SyncPaths[j] := boundingbox image (draw SyncPaths[i] ; draw SyncPaths[j] ; ) ; + SyncTasks[j] := SyncTasks[i] ; + else : + j := j + 1 ; + SyncPaths[j] := SyncPaths[i] ; + SyncTasks[j] := SyncTasks[i] ; + fi ; + endfor ; + NOfSyncPaths := j ; + fi ; + fi ; + fi ; +enddef ; + +def SyncTask(expr n) = + if known SyncTasks[n] : SyncTasks[n] else : 0 fi +enddef ; + +def FlushSyncTasks = + for i = 1 upto NOfSyncPaths : + ProcessSyncTask(SyncPaths[i], TheSyncColor(CurrentSyncClass,sync_t[CurrentSyncClass][SyncTasks[i]])) ; + endfor ; +enddef ; + +def ProcessSyncTask(expr p, c) = + fill p withcolor c ; +enddef ; + +endinput ;
\ No newline at end of file |