ref: 3a7146f8bf32e57d1989885039277449c3a70836
dir: /sys/lib/tmac/tmac.pictures/
.de PI \" Picture Include . \" $1=file(page) $2=height,width,yoff,xoff $3=flags . \" Height, width, xoff, and yoff are for the frame, flags is for the . \" picture. Default dimensions are inches. \\X'PI:\\n(.o:\\n(.i:\\n(.l:\\n(.t:\\$1:\\$2:\\$3:'\\c .. .nr FT 0 .de BP \" Begin a Picture . \" . \" $1=file(page) $2=height $3=width $4=position $5=offset $6=flags $7=label . \" . \" Height, width, position, and offset are for the frame, flags is for . \" the picture. The postion flag should be l, c, r, or "". Omitting the . \" position argument is also allowed for compatibility with the original . \" version of the macro. In that case offset is taken relative to your . \" left margin. .if \\n(FT>1 .EP . \" Need these when we switch environments. .nr Ov \\n(.v .nr Oi \\n(.i .nr Ol \\n(.l . \" Remember the arguments - sometimes as both a string and number register. .nr $2 \\$2i .nr $3 \\$3i .nr $4 \\$4i .ds $4 \\$4 .nr $5 \\$5i .ds $5 \\$6 .ds $6 \\$7 . \" Accept a few unadvertised position flags. .if '\\*($4'L' .ds $4 l .if '\\*($4'C' .ds $4 c .if '\\*($4'R' .ds $4 r . \" A null with more than three arguments means l. .if \\n(.$>3 .if '\\*($4'' .ds $4 l . \" Default frame dimensions if missing, zero, or null. .if !\\n($2>0 .nr $2 3.0i .if !\\n($3>0 .nr $3 \\n(.lu-\\n(.iu-\\n($4u .if !\\n($3>0 .nr $3 \\n($2u . \" Figure out the offset that will be used the rest of the way. .if '\\*($4'l' .nr $4 \\n($5u .if '\\*($4'c' .nr $4 (\\n(.lu-\\n(.iu-\\n($3u)/2u+\\n($5u .if '\\*($4'r' .nr $4 \\n(.lu-\\n(.iu-\\n($3u+\\n($5u . \" If we haven't recognized the position flag assume it wasn't given and . \" treat argument four as an offset from the left. .if !'\\*($4'l' .if !'\\*($4'c' .if !'\\*($4'r' .ds $5 \\$5 .if !'\\*($4'l' .if !'\\*($4'c' .if !'\\*($4'r' .ds $6 \\$6 . \" Set increments for line length and indent. .nr Ii \\n($3u+\\n($4u+.1i .nr Il \\n(.lu-\\n(.iu-\\n($4u+.1i . \" Set the frame type to one of: . \" 0 - frame is as wide as a line of text - skip over it. . \" 1 - fits in left or right margins . \" 2 - fill with text on the right . \" 3 - on the left . \" 4 - or on both sides of the frame . \" 5 - only set in EP if FT was 4 and now filling on the right. . \" Assume the frame is as wide as a line of text, then check dimensions . \" to see what's really true. The order of these tests is important! .nr FT 0 .if \\n($4u>1.0i .nr FT 3 .if \\n($4u+\\n(.iu>=\\n(.lu .nr FT 1 .if \\n($3u+\\n($4u+\\n(.iu+1.0i<\\n(.lu .nr FT 2 .if \\n($3u+\\n($4u<=0 .nr FT 1 .if \\n(FT=2 .if \\n($4u>1.0i .nr FT 4 . \" Ask for some vertical space - labeled pictures need a little extra, . \" margin pictures a little less. .if \\n(FT=1 .if '\\*($6'' .ne \\n($2u .if \\n(FT=1 .if !'\\*($6'' .ne \\n($2u+2v .if !\\n(FT=1 .if '\\*($6'' .ne \\n($2u+3v .if !\\n(FT=1 .if !'\\*($6'' .ne \\n($2u+5v . \" Save our place, draw the picture, label it, and return. Need precise . \" control of when \X'...' is put out - thus the new environment. .mk Oh .ev 1 .in \\n(Oiu .ll \\n(Olu .vs \\n(Ovu .if \\n(FT=1 .sp -1v .if \\n(FT=1 .PI \\$1 \\n($2u,\\n($3u,\\n(.vu,\\n($4u t\\*($5 .if !\\n(FT=1 .PI \\$1 \\n($2u,\\n($3u,\\n(.vu,\\n($4u \\*($5 .in .ll .vs .ev .lt \\n($3u .tl \(ts\(ts\\h'\\n($4u+\\n(.iu'\\v'\\n($2u+1.5v'\\*($6\\v'-\\n($2u-1.5v'\\h'-\\n($4u-\\n(.iu'\(ts\(ts .lt 'sp |\\n(Ohu . \" Figure out what to do with the text that follows. .if !'\\*($6'' .nr $2 +2v .if \\n(FT=0 .sp \\n($2u+2v .if \\n(FT=1 .nr FT 0 .if \\n(FT=2 'in +\\n(Iiu .if \\n(FT>2 .ll -\\n(Ilu .if \\n(FT>1 .di BB .if \\n(FT>1 .dt \\n($2u+2v+1u EP . \" Clean things up. .rr $2 .rr $3 .rr $4 .rm $4 .rr $5 .rm $5 .rm $6 .rr Oh .rr Oi .rr Ol .rr Ov .if \\n(FT=0 .EP .. .de EP \" End the Picture - Normally called from a trap, although it can be used . \" on its own to mark the end of a picture. .nr Ot 0 .if \\n(.tu<\\n(.pu .nr Ot \\n(.tu .if \\n(Ot>0 .if \\n(FT=4 .nr FT 3 .if \\n(FT<2 .nr Ot 0 .if \\n(Ot>0 .br .if \\n(FT=5 .nr Ot 0 .if \\n(FT>1 \{\ . ev 1 . eo . br . di . nf . in 0 . BB . in . fi . ec . ev . rm BB\} .if \\n(FT=5 \{\ . nr FT 2 ' sp |\\n(Nhu+1v\} .if \\n(FT=4 \{\ . mk Nh . nr Nh -1v . nr FT 5 ' sp -\\n(dnu+1v ' in +\\n(Iiu . ll +\\n(Ilu . di BB . dt \\n(dnu-2v+1u EP\} .if \\n(FT=2 'in -\\n(Iiu .if \\n(FT=3 .ll +\\n(Ilu .if \\n(FT<4 .nr FT 0 .if \\n(Ot>0 .sp \\n(Otu .rr Ot .if \\n(FT=0 \{\ . rr Nh . rr Ii . rr Il\} ..