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authorMojca Miklavec <mojca.miklavec@gmail.com>2012-05-14 17:38:55 +0000
committerMojca Miklavec <mojca.miklavec@gmail.com>2012-05-14 17:38:55 +0000
commit15995e10bfc68edf79970c4ea4fbb6678566c46e (patch)
tree2de7ca2a83f2d37ef043ad7429a5cb945bb79ddb /Master/texmf-dist/metapost/context/base/mp-core.mp
parentc9a39f716f1e5ec820ed3aab2c9aef25c5a9d730 (diff)
ConTeXt 2012.05.14 16:00
git-svn-id: svn://tug.org/texlive/trunk@26371 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/metapost/context/base/mp-core.mp')
-rw-r--r--Master/texmf-dist/metapost/context/base/mp-core.mp1421
1 files changed, 0 insertions, 1421 deletions
diff --git a/Master/texmf-dist/metapost/context/base/mp-core.mp b/Master/texmf-dist/metapost/context/base/mp-core.mp
deleted file mode 100644
index 2ccdad22c24..00000000000
--- a/Master/texmf-dist/metapost/context/base/mp-core.mp
+++ /dev/null
@@ -1,1421 +0,0 @@
-
-if unknown context_tool : input mp-tool ; fi ;
-if known context_core : endinput ; fi ;
-
-boolean context_core ; context_core := true ;
-
-pair lxy[], rxy[], cxy[], llxy[], lrxy[], ulxy[], urxy[] ;
-path pxy[] ;
-numeric hxy[], wxy[], dxy[], nxy[] ;
-
-def box_found (expr n,x,y,w,h,d) =
- not ((x=0) and (y=0) and (w=0) and (h=0) and (d=0))
-enddef ;
-
-def initialize_box_pos (expr pos,n,x,y,w,h,d) =
- pair lxy, rxy, cxy, llxy, lrxy, ulxy, urxy ;
- path pxy ; numeric hxy, wxy, dxy, nxy;
- lxy := (x,y) ;
- llxy := (x,y-d) ;
- lrxy := (x+w,y-d) ;
- urxy := (x+w,y+h) ;
- ulxy := (x,y+h) ;
- wxy := w ;
- hxy := h ;
- dxy := d ;
- rxy := lxy shifted (wxy,0) ;
- pxy := llxy--lrxy--urxy--ulxy--cycle ;
- cxy := center pxy ;
- nxy := n ;
- freeze_box(pos) ;
-enddef ;
-
-def freeze_box (expr pos) =
- lxy[pos] := lxy ;
- llxy[pos] := llxy ;
- lrxy[pos] := lrxy ;
- urxy[pos] := urxy ;
- ulxy[pos] := ulxy ;
- wxy[pos] := wxy ;
- hxy[pos] := hxy ;
- dxy[pos] := dxy ;
- rxy[pos] := rxy ;
- pxy[pos] := pxy ;
- cxy[pos] := cxy ;
- nxy[pos] := nxy ;
-enddef ;
-
-def initialize_box (expr n,x,y,w,h,d) =
-
- numeric bpos ; bpos := 0 ; initialize_box_pos(bpos,n,x,y,w,h,d) ;
-
-enddef ;
-
-def initialize_area (expr fn,fx,fy,fw,fh,fd,
- tn,tx,ty,tw,th,td) =
-
- 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) ;
-
- do_initialize_area (fpos, tpos) ;
-
-enddef ;
-
-def do_initialize_area (expr fpos, tpos) =
- lxy := lxy[fpos] ;
- llxy := (xpart llxy[fpos], ypart llxy[tpos]) ;
- lrxy := lrxy[tpos] ;
- urxy := (xpart urxy[tpos], ypart urxy[fpos]) ;
- ulxy := ulxy[fpos] ;
- wxy := xpart lrxy - xpart llxy ;
- hxy := hxy[fpos] ;
- dxy := dxy[tpos] ;
- rxy := lxy shifted (wxy,0) ;
- pxy := llxy--lrxy--urxy--ulxy--cycle ;
- cxy := center pxy ;
-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_depth :=
- if pd>0 : pd elseif StrutDepth >0 : StrutDepth else : 3pt fi ;
- par_line_height :=
- par_strut_height + par_strut_depth ;
-enddef ;
-
-def initialize_par (expr fn,fx,fy,fw,fh,fd,
- tn,tx,ty,tw,th,td,
- mn,mx,my,mw,mh,md,
- pn,px,py,pw,ph,pd,
- rw,rl,rr,rh,ra,ri) =
-
- 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 mpos ; mpos := 3 ; initialize_box_pos(mpos,mn,mx,my,mw,mh,md) ;
- numeric ppos ; ppos := 4 ; initialize_box_pos(ppos,pn,px,py,pw,ph,pd) ;
-
- numeric par_strut_height, par_strut_depth, par_line_height ;
-
- set_par_line_height (ph, pd) ;
-
- do_initialize_area (fpos, tpos) ;
- do_initialize_par (fpos, tpos, mpos, ppos, rw,rl,rr,rh,ra,ri) ;
-
-enddef ;
-
-def initialize_area_par (expr fn,fx,fy,fw,fh,fd,
- tn,tx,ty,tw,th,td,
- wn,wx,wy,ww,wh,wd) =
-
- 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 par_strut_height, par_strut_depth, par_line_height ;
-
- 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) ;
-
- numeric mpos ; mpos := 6 ; freeze_box(mpos) ;
-
- do_initialize_par (fpos, tpos, mpos, ffpos, 0,0,0,0,0,0) ;
-
-enddef ;
-
-def do_initialize_par (expr fpos, tpos, mpos, ppos, rw,rl,rr,rh,ra,ri) =
-
- 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) ;
-
- % 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 ;
- fi ;
- else :
- % just one page
- boxgriddirection := up ;
- fi ;
-
- path txy, bxy, pxy, mxy ;
-
- txy := originpath ; % top
- bxy := originpath ; % bottom
- pxy := originpath ; % composed
-
- boolean lefthang, righthang, somehang ;
-
- % 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 lefthang :
- 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 ;
- fi ;
-
- 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]) ;
-
- else :
-
- % 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)) :
- llxy[tpos] := (xpart lhref, ypart llxy[tpos]) ;
- ulxy[tpos] := (xpart lhref, ypart ulxy[tpos]) ;
- else :
- llxy[tpos] := (xpart lref, ypart llxy[tpos]) ;
- ulxy[tpos] := (xpart lref, ypart ulxy[tpos]) ;
- fi ;
-
- if righthang and (round(ypart lrxy[fpos]) >= round(ypart llcorner mxy)) :
- lrxy[fpos] := (xpart rhref, ypart lrxy[fpos]) ;
- urxy[fpos] := (xpart rhref, ypart urxy[fpos]) ;
- else :
- lrxy[fpos] := (xpart rref, ypart lrxy[fpos]) ;
- urxy[fpos] := (xpart rref, ypart urxy[fpos]) ;
- fi ;
-
- fi ;
-
- somehang := (ypart ulxy[fpos]>ypart llcorner mxy) and
- (ypart llxy[tpos]<ypart llcorner mxy) ;
-
- if round(ypart llxy[fpos]) = round(ypart llxy[tpos]) :
-
- % 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.
-
- txy := llxy[fpos] -- lrxy[fpos] -- urxy[fpos] -- ulxy[fpos] -- cycle ;
- bxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- ulxy[tpos] -- cycle ;
-
- elseif (round(ypart llxy[fpos]) = round(ypart ulxy[tpos])) :
-
- % We have a sentence that spans two lines but with overlap.
-
- pxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] -- lrxy[fpos] --
- urxy[fpos] -- ulxy[fpos] -- llxy[fpos] -- ulxy[tpos] -- cycle ;
-
- elseif lefthang and somehang :
-
- % We have a sentence that spans more than two lines with
- % left hanging indentation.
-
- 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
- cycle ;
-
- elseif righthang and somehang :
-
- % 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) :
- (xpart lrcorner mxy,ypart urxy[tpos]) --
- lrcorner mxy -- llcorner mxy --
- else :
- (xpart urxy[fpos],ypart urxy[tpos]) --
- fi
- urxy[fpos] -- ulxy[fpos] -- llxy[fpos] --
- (xpart llxy[tpos],ypart llxy[fpos]) --
- cycle ;
-
- else :
-
- % We have a sentence that spans more than two lines with
- % no hanging indentation.
-
- pxy := llxy[tpos] -- lrxy[tpos] -- urxy[tpos] --
- (xpart urxy[fpos],ypart urxy[tpos]) --
- urxy[fpos] -- ulxy[fpos] -- llxy[fpos] --
- (xpart llxy[tpos],ypart llxy[fpos]) -- cycle ;
-
- fi ;
-
- 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 ;
-
-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 ;
-boolean enable_multi_par_fallback ;
-
-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
- (TextAreas[multirefs[i]] shifted last_multi_par_shift)))
-enddef ;
-
-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 force_multi_par_chain ; force_multi_par_chain := true ;
-boolean one_piece_multi_par ; one_piece_multi_par := false ;
-boolean check_multi_par_chain ; check_multi_par_chain := true ; % extra page check
-
-boolean multi_column_first_page_hack; multi_column_first_page_hack := true ; % seems to work ok
-
-def simplify_multi_pars = % boundingbox ipv shape als optie
- for i := 1 upto nofmultipars :
- multipars[i] := boundingbox multipars[i] ;
- endfor ;
-enddef ;
-
-def save_multipar (expr i, l, p) =
- nofmultipars := nofmultipars + 1 ;
- multirefs[nofmultipars] := i ;
- multilocs[nofmultipars] := l ;
- multipars[nofmultipars] := unspiked (simplified p) ;
-enddef ;
-
-def prepare_multi_pars (expr fn,fx,fy,fw,fh,fd,
- tn,tx,ty,tw,th,td,
- wn,wx,wy,ww,wh,wd,
- pn,px,py,pw,ph,pd,
- rw,rl,rr,rh,ra,ri) =
-
- if span_multi_column_pars :
- begingroup ;
- save TextAreas ; path TextAreas[] ;
- save NOfTextAreas ; numeric NOfTextAreas ;
- for i=1 upto NOfTextColumns :
- TextAreas[i] := TextColumns[i] ;
- endfor ;
- NOfTextAreas := NOfTextColumns ;
- fi ;
-
- 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 ;
- TextAreas[1] := TextAreas[0] ;
- TextColumns[1] := TextColumns[0] ;
- 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 ;
-
- numeric par_strut_height, par_strut_depth, par_line_height ;
-
- set_par_line_height (ph, pd) ;
-
- numeric par_hang_indent, par_hang_after, par_indent, par_left_skip, par_right_skip ;
-
- par_hang_indent := rh ;
- par_hang_after := ra ;
- par_indent := ri ;
- par_left_skip := rl ;
- par_right_skip := rr ;
-
- pair par_start_pos ;
- pair par_stop_pos ;
-
- 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 ;
- par_stop_pos := lrxy[tpos]
- if par_right_skip<0: shifted (par_right_skip,0) fi ; % nasty as the endpos can be shifted by rightskip
-
- if wxy[wpos]>0 :
- left_skip := rl + xpart llxy[wpos] - xpart llxy[ppos] ;
- right_skip := rw - left_skip - ww ;
- else :
- left_skip := rl ;
- right_skip := rr ;
- fi ;
-
- path multipar, multipars[] ;
- numeric multiref, multirefs[] ;
- numeric multiloc, multilocs[] ; % 1=begin 2=between 3=end
-
- numeric multi_par_pages ; multi_par_pages := nxy[tpos]-nxy[fpos]+1 ;
-
- % locals .. why can't i move these outside?
-
-vardef _pmp_set_multipar_ (expr i) =
- ( (TextAreas[i] leftenlarged -left_skip) rightenlarged (-right_skip
- if auto_multi_par_hsize : + rw - bbwidth(TextAreas[i]) fi) )
-enddef ;
-
-vardef _pmp_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
- else :
- p
- fi
-enddef ;
-
-vardef _pmp_estimated_par_lines_ (expr h) =
- round(h/par_line_height)
-enddef ;
-
-vardef _pmp_top_multi_par_(expr p) =
- (round(_pmp_estimated_par_lines_(bbheight(p)*par_line_height))=round(bbheight(p)))
-enddef ;
-
-vardef _pmp_multi_par_tsc_(expr p) =
- if _pmp_top_multi_par_(p) : TopSkipCorrection else : 0 fi
-enddef ;
-
-vardef _pmp_estimated_multi_par_height_ (expr n, t) =
- if round(par_line_height)=0 :
- 0
- else :
- save ok, h ; boolean ok ;
- numeric h ; h := 0 ;
- ok := false ;
- if (nxy[fpos]=RealPageNumber-1) :
- for i := 1 upto NOfSavedTextAreas :
- if (InsideSavedTextArea(i,par_start_pos)) :
- ok := true ;
- h := h + _pmp_estimated_par_lines_(ypart ulxy[fpos] -
- ypart llcorner SavedTextAreas[i]) ;
- elseif ok :
- h := h + _pmp_estimated_par_lines_(bbheight(SavedTextAreas[i])) ;
- fi ;
- endfor ;
- fi ;
- if ok :
- for i := 1 upto n-1 :
- h := h + _pmp_estimated_par_lines_(bbheight(TextAreas[i])) ;
- endfor ;
- else :
- % already: ok := false ;
- for i := 1 upto n-1 :
- if (InsideTextArea(i,par_start_pos)) :
- ok := true ;
- h := h + _pmp_estimated_par_lines_(ypart ulxy[fpos] - ypart llcorner TextAreas[i]) ;
- elseif ok :
- h := h + _pmp_estimated_par_lines_(bbheight(TextAreas[i])) ;
- fi ;
- endfor ;
- fi ;
- h
- fi
-enddef ;
-
-vardef _pmp_left_top_hang_ (expr same_area) =
-
- par_hang_after := ra + _pmp_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 _pmp_snapped_multi_pos_(ulxy[fpos]));
- pair _pa_ ; _pa_ := _ul_ shifted (0,par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llcorner multipar)) ;
- if same_area :
- _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llxy[tpos])) ;
- fi ;
- if obey_multi_par_more and (round(par_line_height)>0) :
- par_hang_after := min(0,round(par_hang_after +
- (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
- fi ;
- (xpart _ul_ + par_hang_indent, ypart lrxy[fpos]) --
- (xpart _ul_ + par_hang_indent, ypart _pa_) --
- (xpart ulcorner multipar, ypart _pa_)
- else :
- (xpart ulcorner multipar, ypart lrxy[fpos])
- fi
-enddef ;
-
-vardef _pmp_right_top_hang_ (expr same_area) =
-
- par_hang_after := ra + _pmp_estimated_par_lines_(py-fy) ;
-
- if (par_hang_indent<0) and (par_hang_after<0) and obey_multi_par_hang :
- pair _ur_ ; _ur_ := (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos])) ;
- pair _pa_ ; _pa_ := _ur_ shifted (0,par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart llcorner multipar)) ;
- if same_area :
- _pa_ := (xpart _pa_,max(ypart _pa_ -TopSkipCorrection,ypart _pmp_snapped_multi_pos_(ulxy[tpos]))) ;
- fi ;
- if obey_multi_par_more and (round(par_line_height)>0) :
- par_hang_after := min(0,round(par_hang_after +
- (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
- fi ;
- (xpart urcorner multipar, ypart _pa_) --
- (xpart _ur_ + par_hang_indent, ypart _pa_) --
- (xpart _ur_ + par_hang_indent, ypart _pmp_snapped_multi_pos_(urxy[fpos]))
- else :
- (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos]))
- fi
-enddef ;
-
-vardef _pmp_x_left_top_hang_ (expr i, t) =
- par_hang_after := min(0,ra + _pmp_estimated_multi_par_height_(i,t)) ;
- if (par_hang_indent>0) and (par_hang_after<0) :
- pair _ul_ ; _ul_ := ulcorner multipar ;
- pair _pa_ ; _pa_ := _ul_ shifted (0,par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ;
- if t :
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart llxy[tpos]));
- fi ;
- if abs(ypart _pa_-ypart llxy[tpos])<par_line_height :
- _pa_ := (xpart _pa_,ypart llxy[tpos]);
- fi ;
- if abs(ypart _pa_-ypart llcorner multipar)<par_line_height :
- _pa_ := (xpart _pa_,ypart llcorner multipar);
- fi ;
- (xpart _ul_, ypart _pa_) --
- (xpart _ul_ + par_hang_indent, ypart _pa_) --
- (xpart _ul_ + par_hang_indent, ypart _ul_)
- else :
- ulcorner multipar
- fi
-enddef ;
-
-vardef _pmp_x_right_top_hang_ (expr i, t) =
- par_hang_after := min(0,ra + _pmp_estimated_multi_par_height_(i,t)) ;
- if (par_hang_indent<0) and (par_hang_after<0) :
- pair _ur_ ; _ur_ := urcorner multipar ;
- pair _pa_ ; _pa_ := _ur_ shifted (0,par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ;
- if t :
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _pmp_snapped_multi_pos_(urxy[tpos]))) ;
- fi ;
- (xpart _ur_ + par_hang_indent, ypart _ur_) --
- (xpart _ur_ + par_hang_indent, ypart _pa_) --
- (xpart _ur_, ypart _pa_)
- else :
- urcorner multipar
- fi
-enddef ;
-
-vardef _pmp_left_bottom_hang_ (expr same_area) =
- pair _ll_, _sa_, _pa_ ;
- _sa_ := if same_area : llxy[tpos] else : lrcorner multipar fi ;
- if (par_hang_indent>0) and (par_hang_after>0) and obey_multi_par_hang :
- _ll_ := (xpart ulcorner multipar, ypart _pmp_snapped_multi_pos_(ulxy[fpos])) ;
- _pa_ := _ll_ shifted (0,-par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ;
- if same_area :
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ;
- fi ;
- if obey_multi_par_more and (round(par_line_height)>0) :
- par_hang_after := max(0,round(par_hang_after -
- (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
- fi ;
- _pa_ --
- (xpart _pa_ + par_hang_indent,ypart _pa_) --
- (xpart _pa_ + par_hang_indent,ypart _sa_)
- else :
- (xpart llcorner multipar, ypart _sa_)
- fi
-enddef ;
-
-vardef _pmp_right_bottom_hang_ (expr same_area) =
- pair _lr_, _sa_, _pa_ ;
- _sa_ := if same_area : _pmp_snapped_multi_pos_(ulxy[tpos]) else : lrcorner multipar fi ;
- if (par_hang_indent<0) and (par_hang_after>0) and obey_multi_par_hang :
- _lr_ := (xpart urcorner multipar, ypart _pmp_snapped_multi_pos_(urxy[fpos])) ;
- _pa_ := _lr_ shifted (0,-par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ;
- if same_area :
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _pmp_snapped_multi_pos_(ulxy[tpos]))) ;
- fi ;
- if obey_multi_par_more and (round(par_line_height)>0) :
- par_hang_after := max(0,round(par_hang_after -
- (ypart urxy[fpos]-ypart _pa_)/par_line_height)) ;
- fi ;
- (xpart _pa_ + par_hang_indent,ypart _sa_) --
- (xpart _pa_ + par_hang_indent,ypart _pa_) --
- _pa_
- else :
- (xpart lrcorner multipar, ypart _sa_)
- fi
-enddef ;
-
-vardef _pmp_x_left_bottom_hang_ (expr i, t) =
- pair _ll_, _sa_, _pa_ ;
- _sa_ := if t : llxy[tpos] else : llcorner multipar fi ;
- if (par_hang_indent>0) and (ra>0) :
- par_hang_after := max(0,ra - _pmp_estimated_multi_par_height_(i,t)) ;
- _ll_ := ulcorner multipar ;
- _pa_ := _ll_ shifted (0,-par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart llcorner multipar)) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ;
- % we need to compensate for topskip enlarged areas
- if abs(ypart _pa_ - ypart _sa_) > par_line_height :
- (xpart _pa_ + par_hang_indent,ypart _sa_) --
- (xpart _pa_ + par_hang_indent,ypart _pa_) --
- fi
- _pa_
- else :
- (xpart llcorner multipar, ypart _sa_)
- fi
-enddef ;
-
-vardef _pmp_x_right_bottom_hang_ (expr i, t) =
- pair _lr_, _sa_, _pa_ ;
- _sa_ := if t : _pmp_snapped_multi_pos_(ulxy[tpos]) else : llcorner multipar fi ;
- if (par_hang_indent<0) and (ra>0) :
- par_hang_after := max(0,ra - _pmp_estimated_multi_par_height_(i, t)) ;
- _lr_ := urcorner multipar ;
- _pa_ := _lr_ shifted (0,-par_hang_after*par_line_height) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart lrcorner multipar)) ;
- _pa_ := (xpart _pa_,max(ypart _pa_,ypart _sa_)) ;
- % we need to compensate for topskip enlarged areas
- _pa_
- if abs(ypart _pa_ - ypart _sa_) > par_line_height :
- -- (xpart _pa_ + par_hang_indent,ypart _pa_)
- -- (xpart _pa_ + par_hang_indent,ypart _sa_)
- fi
- else :
- (xpart lrcorner multipar, ypart _sa_)
- fi
-enddef ;
-
-% def _pmp_test_multipar_ =
-% multipar := boundingbox multipar ;
-% enddef ;
-
- % first loop
-
- ii := 0 ; nn := NOfTextAreas+1 ; nofmultipars := 0 ;
-
- if enable_multi_par_fallback and
- (nxy[fpos]=RealPageNumber) and
- (nxy[tpos]=RealPageNumber) and not
- (InsideSomeTextArea(lxy[fpos]) and
- InsideSomeTextArea(rxy[tpos])) :
-
- % fallback
-
- % multipar :=
- % llxy[fpos] --
- % lrxy[tpos] --
- % urxy[tpos] --
- % ulxy[fpos] -- cycle ;
- %
- % save_multipar (1,1,multipar) ;
-
- % we need to take the boundingbox because there can be
- % more lines and we want a proper rectange
-
- multipar :=
- ulxy[fpos] --
- urxy[tpos] --
- lrxy[fpos] --
- llxy[tpos] -- cycle ;
-
- save_multipar (1,1,boundingbox(multipar)) ;
-
- else :
-
- % normal
-
- for i=1 upto NOfTextAreas :
-
- TopSkipCorrection := 0 ;
-
- multipar := _pmp_set_multipar_(i) ;
-
- % watch how we compensate for negative indentation
-
- if (nxy[fpos]=RealPageNumber) and (InsideTextArea(i,par_start_pos)) :
-
- % first one in chain
-
- ii := i ;
-
-% if (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,llxy[tpos])) :
- if (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,par_stop_pos)) :
-
- % in same area
-
- nn := i ;
-
- if compensate_multi_par_topskip and (round(LineHeight-ph-pd)=0) :
-
- TopSkipCorrection := TopSkip - StrutHeight ;
-
- if round(ypart ulxy[fpos] + TopSkipCorrection) =
- round(ypart ulcorner TextAreas[i]) :
- ulxy[fpos] := ulxy[fpos] shifted (0,TopSkipCorrection) ;
- urxy[fpos] := urxy[fpos] shifted (0,TopSkipCorrection) ;
- else :
- TopSkipCorrection := 0 ;
- fi ;
-
- fi ;
-
- if ypart llxy[fpos] = ypart llxy[tpos] :
-
- multipar :=
- llxy[fpos] --
- lrxy[tpos] --
- %urxy[tpos] --
- _pmp_snapped_multi_pos_(urxy[tpos]) --
- %ulxy[fpos] --
- _pmp_snapped_multi_pos_(ulxy[fpos]) --
- cycle ;
-
- save_multipar (i,1,multipar) ;
-
- elseif (ypart llxy[fpos] = ypart ulxy[tpos]) and
- (xpart llxy[tpos] < xpart llxy[fpos]) :
-
- % two loners
-
- multipar := if obey_multi_par_hang :
-
- _pmp_right_bottom_hang_(true) --
- _pmp_right_top_hang_(true) --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
-
- else :
-
- llxy[fpos] --
- (xpart urcorner multipar, ypart llxy[fpos]) --
- (xpart urcorner multipar, ypart ulxy[fpos]) --
- _pmp_snapped_multi_pos_(ulxy[fpos]) --
-
- fi cycle ;
-
- save_multipar (i,1,multipar) ;
-
- multipar := _pmp_set_multipar_(i) ;
-
- multipar := if obey_multi_par_hang :
-
- _pmp_left_bottom_hang_(true) --
- llxy[tpos] --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- _pmp_left_top_hang_(true) --
-
- else :
-
- (xpart llcorner multipar, ypart llxy[tpos]) --
- llxy[tpos] --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- (xpart llcorner multipar, ypart ulxy[tpos]) --
-
- fi cycle ;
-
- save_multipar (i,1,multipar) ;
-
- else :
-
- multipar := if obey_multi_par_hang :
-
- _pmp_left_bottom_hang_(true) --
- llxy[tpos] --
- %ulxy[tpos] --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- _pmp_right_bottom_hang_(true) --
- _pmp_right_top_hang_(true) --
- %urxy[fpos] --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
- _pmp_left_top_hang_(true) --
-
- else :
-
- (xpart llcorner multipar, ypart llxy[tpos]) --
- llxy[tpos] --
- %ulxy[tpos] --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- (xpart lrcorner multipar, ypart ulxy[tpos]) --
- (xpart urcorner multipar, ypart urxy[fpos]) --
- %urxy[fpos] --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
- (xpart ulcorner multipar, ypart lrxy[fpos]) --
-
- fi cycle ;
-
- save_multipar (i,1,multipar) ;
-
- fi ;
-
- else :
-
- multipar := if obey_multi_par_hang :
-
- _pmp_left_bottom_hang_(false) --
- _pmp_right_bottom_hang_(false) --
- _pmp_right_top_hang_(false) --
- %urxy[fpos] --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
- _pmp_left_top_hang_(false) --
-
- else :
-
- llcorner multipar --
- lrcorner multipar --
- (xpart urcorner multipar, ypart urxy[fpos]) --
- %urxy[fpos] --
- _pmp_snapped_multi_pos_(urxy[fpos]) --
- lrxy[fpos] --
- (xpart ulcorner multipar, ypart lrxy[fpos]) --
-
- fi cycle ;
-
- save_multipar (i,1,multipar) ;
-
- fi ;
-
-% elseif (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,llxy[tpos])) :
- elseif (nxy[tpos]=RealPageNumber) and (InsideTextArea(i,par_stop_pos)) :
-
- % last one in chain
-
- nn := i ;
-
- if obey_multi_par_hang and obey_multi_par_more :
-
- multipar :=
- _pmp_x_left_top_hang_(i,true) --
- _pmp_x_right_top_hang_(i,true) --
- _pmp_x_right_bottom_hang_(i,true) --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- llxy[tpos] --
- _pmp_x_left_bottom_hang_(i,true) --
- cycle ;
-
- else :
-
- multipar :=
- ulcorner multipar --
- urcorner multipar --
- (xpart lrcorner multipar, ypart urxy[tpos]) --
- _pmp_snapped_multi_pos_(ulxy[tpos]) --
- llxy[tpos] --
- (xpart llcorner multipar, ypart llxy[tpos]) --
- cycle ;
-
- fi ;
-
- save_multipar (i,3,multipar) ;
-
- elseif multi_column_first_page_hack and ((nxy[fpos]=RealPageNumber) and (nxy[tpos]>=RealPageNumber) and (NOfTextColumns>1)) :
-
- save_multipar (i,2,multipar) ;
-
- else :
- % handled later
- fi ;
-
- endfor ;
-
- % second loop
-
- if force_multi_par_chain or (ii > 1) :
-
- for i=ii+1 upto nn-1 :
-
- % rest of chain / todo : hang
-
-% hm, the second+ column in column sets now gets lost in a NOfTextColumns
-
- if (not check_multi_par_chain) or
- ((nxy[fpos]<RealPageNumber) and (nxy[tpos]>RealPageNumber))
- :
-
- multipar := _pmp_set_multipar_(i) ;
-
- if obey_multi_par_hang and obey_multi_par_more :
-
- multipar :=
- _pmp_x_left_top_hang_(i,false) --
- _pmp_x_right_top_hang_(i,false) --
- _pmp_x_right_bottom_hang_(i,false) --
- _pmp_x_left_bottom_hang_(i,false) --
- cycle ;
-
- fi ;
-
- save_multipar(i,2,multipar) ;
-
- fi ;
-
- endfor ;
-
- fi ;
-
- % end of normal/fallback
-
-fi ;
-
- if span_multi_column_pars :
- endgroup ;
- fi ;
-
- % potential safeguard:
-
- % for i=1 upto nofmultipars :
- % if length p <= 4 :
- % multipars[i] := boundingbox(multipars[i]) ;
- % fi ;
- % end ;
-
- % quick hack for gb:
-
- one_piece_multi_par := (nofmultipars=1) and (pn=tn) ;
-
-enddef ;
-
-color boxgridcolor ; boxgridcolor := .8red ;
-color boxlinecolor ; boxlinecolor := .8blue ;
-color boxfillcolor ; boxfillcolor := .8white ;
-numeric boxgridtype ; boxgridtype := 0 ;
-numeric boxlinetype ; boxlinetype := 1 ;
-numeric boxfilltype ; boxfilltype := 1 ;
-numeric boxdashtype ; boxdashtype := 0 ;
-pair boxgriddirection ; boxgriddirection := up ;
-numeric boxgridwidth ; boxgridwidth := 1pt ;
-numeric boxlinewidth ; boxlinewidth := 1pt ;
-numeric boxlineradius ; boxlineradius := 0pt ;
-numeric boxfilloffset ; boxfilloffset := 0pt ;
-numeric boxgriddistance ; boxgriddistance := .5cm ;
-numeric boxgridshift ; boxgridshift := 0pt ;
-
-def draw_box =
- draw pxy withcolor boxlinecolor withpen pencircle scaled boxlinewidth ;
- draw lxy -- rxy withcolor boxlinecolor withpen pencircle scaled boxgridwidth ;
-enddef ;
-
-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 ;
- draw baseline_grid (i,boxgriddirection,true ) withcolor boxgridcolor ;
- elseif boxgridtype = 2 :
- boxgriddirection := origin ;
- draw baseline_grid (i,boxgriddirection,false) withcolor boxgridcolor ;
- elseif boxgridtype = 3 :
- boxgriddirection := origin ;
- draw baseline_grid (i,boxgriddirection,true ) withcolor boxgridcolor ;
- draw baseline_grid (i,boxgriddirection,true )
- shifted (0,ExHeight) withcolor boxgridcolor ;
- elseif boxgridtype = 4 :
- boxgriddirection := origin ;
- draw baseline_grid (i,boxgriddirection,true )
- shifted (0,ExHeight/2) withcolor boxgridcolor ;
- elseif boxgridtype = 11 :
- draw graphic_grid(i,boxgriddistance,boxgriddistance,boxgriddistance/2,boxgriddistance/2) ;
- elseif boxgridtype = 12 :
- draw graphic_grid(i,boxgriddistance,boxgriddistance,0,0) ;
- fi ;
- endfor ;
-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
- withpen pencircle scaled .5pt withcolor c ;
- endfor ; fi ;
- draw p withpen pencircle scaled .5pt withcolor c ;
-enddef ;
-
-def show_par =
- 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 ;
-enddef ;
-
-def sort_multi_pars =
- if nofmultipars>1 :
- 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_ ;
- _n_ := multirefs[nofmultipars] ;
- multirefs[nofmultipars] := multirefs[i] ;
- multirefs[i] := _n_ ;
- _n_ := multilocs[nofmultipars] ;
- multilocs[nofmultipars] := multilocs[i] ;
- multilocs[i] := _n_ ;
- fi ;
- endfor ;
- endgroup ;
- fi ;
-enddef ;
-
-
-def collapse_multi_pars =
- if nofmultipars>1 :
- begingroup ; save _nofmultipars_ ; numeric _nofmultipars_ ;
- _nofmultipars_ := 1 ;
- sort_multi_pars ; % block not in order: 1, 3, 2....
- for i:=1 upto nofmultipars-1 :
- if (round(xpart(llcorner multipars[i]-llcorner multipars[i+1]))=0) and
- (round(xpart(lrcorner multipars[i]-lrcorner multipars[i+1]))=0) :
-multilocs[_nofmultipars_] := multilocs[i+1] ;
-multirefs[_nofmultipars_] := multirefs[i+1] ;
- multipars[_nofmultipars_] :=
- ulcorner multipars[_nofmultipars_] --
- urcorner multipars[_nofmultipars_] --
- lrcorner multipars[i+1] --
- llcorner multipars[i+1] -- cycle ;
- else :
- _nofmultipars_ := _nofmultipars_ + 1 ;
- multipars[_nofmultipars_] := multipars[i+1] ;
- multilocs[_nofmultipars_] := multilocs[i+1] ;
- multirefs[_nofmultipars_] := multirefs[i+1] ;
- fi ;
- endfor ;
- nofmultipars := _nofmultipars_ ;
- endgroup ;
- fi ;
-enddef ;
-
-% 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 )
-% shifted (0,ExHeight) ; % withcolor boxgridcolor ;
-% elseif boxgridtype= 4 :
-% draw baseline_grid (multipars[i],up,true )
-% shifted (0,ExHeight/2) ; % 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 ;
-
-def draw_multi_pars =
- for i=1 upto nofmultipars :
- do_draw_par(multipars[i]) ;
- if boxgridtype= 1 :
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) ; % withcolor boxgridcolor ;
- elseif boxgridtype= 2 :
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,false) ; % withcolor boxgridcolor ;
- elseif boxgridtype= 3 :
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) ; % withcolor boxgridcolor ;
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight) ; % withcolor boxgridcolor ;
- elseif boxgridtype= 4 :
- draw baseline_grid (multipars[i],if multilocs[i]=1: down else: up fi,true) shifted (0,ExHeight/2) ; % 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 ;
-
-def show_multi_pars =
- for i=1 upto nofmultipars :
- do_show_par(multipars[i], 6pt, .5blue) ;
- 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 ;
- if boxfilltype>0 :
- if boxfilloffset>0 :
- % temporary hack
- begingroup ; interim linejoin := mitered ;
- filldraw pp withcolor boxfillcolor withpen pencircle scaled (2*boxfilloffset) ;
- endgroup ;
- else :
- fill pp withcolor boxfillcolor ;
- fi ;
- fi ;
- if boxlinetype>0 :
- 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, bb ; picture grid ; pair start ; path bb ;
- def _do_ (expr start) =
- % 1 = normal, 2 = with background (i.e. no shine-through)
- if boxdashtype = 2 :
- draw start -- start shifted (bbwidth(pxy),0)
- withpen pencircle scaled boxgridwidth
- withcolor boxfillcolor ;
- fi ;
- draw start -- start shifted (bbwidth(pxy),0)
- if boxdashtype > 0 : dashed evenly fi
- withpen pencircle scaled boxgridwidth
- withcolor boxgridcolor ;
- enddef ;
- grid := image
- ( %fails with inlinespace
- %
- if pdir=up :
- for i = if at_baseline : par_strut_depth else : 0 fi
- 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
- until bbheight(pxy) :
- _do_ (ulcorner pxy shifted (0,-i)) ;
- endfor ;
- fi ;
- ) ;
- clip grid to pxy ;
- bb := boundingbox grid ;
- grid := grid shifted (0,boxgridshift) ;
- setbounds grid to bb ;
- grid
- else :
- nullpicture
- fi
-enddef ;
-
-vardef graphic_grid (expr pxy, dx, dy, x, y) =
- if (bbheight(pxy)>dy) and (bbwidth(pxy)>dx) and (boxgridwidth>0) :
- 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 ;
- 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 ;
- endfor ) shifted (x,y) ;
- clip grid to pxy ;
- grid
- else :
- nullpicture
- fi
-enddef ;
-
-def anchor_box (expr n,x,y,w,h,d) =
- currentpicture := currentpicture shifted (-x,-y) ;
-enddef ;
-
-let draw_area = draw_box ;
-let anchor_area = anchor_box ;
-let anchor_par = anchor_box ;
-
-
-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 ;
-
-end
-
-% for Jelle Huisman
-%
-% \setupcolors[state=start]
-% \dontcomplain
-% \definecolumnset[example][n=3,distance=5mm]
-% \startMPextensions
-% multi_column_first_page_hack := true ;
-% \stopMPextensions
-% \startuseMPgraphic{mpos:par:trick}
-% for i=1 upto nofmultipars-1 : draw (rightboundary multipars[i]) shifted (2.5mm, 0) ; endfor ;
-% \stopuseMPgraphic
-% \definetextbackground[test][mp=mpos:par:trick,method=mpos:par:columnset]
-% \starttext
-% \definecolumnsetspan[chapter][n=3]
-% \startcolumnset[example]
-% \startcolumnsetspan[chapter]
-% \chapter{Chapter One}
-% \stopcolumnsetspan
-% \starttextbackground[test] \dorecurse {3}{\input knuth } \stoptextbackground
-% \stopcolumnset
-% \startcolumnset[example]
-% \startcolumnsetspan[chapter]
-% \chapter{Chapter One}
-% \stopcolumnsetspan
-% \starttextbackground[test] \dorecurse {10}{\input knuth } \stoptextbackground
-% \stopcolumnset
-% \stoptext
-%
-% fast variant:
-%
-% \startuseMPgraphic{whatever}
-% for i=1 upto NOfTextColumns-1 :
-% draw (rightboundary TextColumns[i]) shifted (2.5mm,0) shifted -\MPxy\textanchor ;
-% endfor ;
-% setbounds currentpicture to OverlayBox ;
-% \stopuseMPgraphic
-% \defineoverlay[whatever][\useMPgraphic{whatever}]
-% \setupbackgrounds[text][background=whatever]