3 .\" Define the PSPIC macro.
5 .\" When used other than with -Tps, -Tdvi, -Thtml, or -Txhtml it draws a box
6 .\" around where the picture would go.
10 .\" .PSPIC [-L|-R|-C|-I <indent>] <file> [<width> [<height>]]
23 . HTML-DO-IMAGE \\$1 l
30 . HTML-DO-IMAGE \\$1 r
36 . nr ps-offset (m;\\$2)
38 . HTML-DO-IMAGE \\$1 i
41 . \" centered is the default
44 . HTML-DO-IMAGE \\$1 c
53 . if (\\n[llx] : \\n[lly] : \\n[urx] : \\n[ury]) \{\
54 . nr ps-wid (\\n[urx] - \\n[llx])
55 . nr ps-ht (\\n[ury] - \\n[lly])
56 . if (\\n[ps-wid] < 0) \
57 . nr ps-wid (-\\n[ps-wid])
58 . if (\\n[ps-ht] < 0) \
59 . nr ps-ht (-\\n[ps-ht])
61 . \" if we have a <width> parameter, use it as the final
62 . \" image width; otherwise we use the image's natural width
63 . \" or the current line length, whatever is smaller
65 . nr ps-deswid (i;\\$2)
67 . nr ps-deswid ((\\n[.l] - \\n[.i]) <? \\n[ps-wid]p)
69 . \" compute the final image height (with proper rounding),
70 . \" based on the image's aspect
71 . nr ps-desht (\\n[ps-deswid] * 1000 + (\\n[ps-wid] / 2) \
72 / \\n[ps-wid] * \\n[ps-ht] \
75 . \" if we have a <height> parameter, use it as the final
76 . \" image height in case it is smaller than the height
77 . \" value we have just computed
78 . if ((\\n[.$] >= 3) & (\\n[ps-desht] > (i;0\\$3))) \{\
79 . nr ps-desht (i;\\$3)
80 . \" recompute the final image width since we always
81 . \" keep the correct image aspect
82 . nr ps-deswid (\\n[ps-desht] * 1000 + (\\n[ps-ht] / 2) \
83 / \\n[ps-ht] * \\n[ps-wid] \
87 . \" reserve vertical space for image
88 . ne (\\n[ps-desht]u + 1v)
90 . \" compute image offset w.r.t. the current left margin
91 . if (\\n[ps-offset-mode] == 0) \
92 . nr ps-offset (\\n[.l] - \\n[.i] - \\n[ps-deswid] / 2)
93 . if (\\n[ps-offset-mode] == 1) \
95 . if (\\n[ps-offset-mode] == 2) \
96 . nr ps-offset (\\n[.l] - \\n[.i] - \\n[ps-deswid])
99 . \" prepare values for \special{psfile=...} as needed by dvips
100 . ie (\\n[ps-wid]p == \\n[ps-deswid]) \{\
101 . ds ps-scale \" empty
102 . ds ps-hoffset hoffset=-\\n[llx]
103 . ds ps-voffset voffset=-\\n[lly]
106 . nr ps-scale (\\n[ps-deswid] * 100 / \\n[ps-wid]p)
107 . nr ps-hoffset (-\\n[llx] * \\n[ps-scale] / 100)
108 . nr ps-voffset (-\\n[lly] * \\n[ps-scale] / 100)
109 . ds ps-scale hscale=\\n[ps-scale] vscale=\\n[ps-scale]
110 . ds ps-hoffset hoffset=\\n[ps-hoffset]
111 . ds ps-voffset voffset=\\n[ps-voffset]
116 \X'psfile=\\$1 \\*[ps-hoffset] \\*[ps-voffset] \\*[ps-scale]'
120 . \" prepare values for grops; the `ps-invis' and `ps-endinvis' escapes
121 . \" are for groff's -X switch to provide a PS preview with xditview:
122 . \" it uses -Tps for formatting but xditview can't handle EPS files,
123 . \" thus alternative code is enclosed between those two escapes
124 . ds ps-invis \X'ps: invis'
125 . ds ps-endinvis \X'ps: endinvis'
126 . ds ps-import \X'ps: import \E$1 \En[llx] \En[lly] \En[urx] \En[ury] \
127 \En[ps-deswid] \E*[ps-desht]'
135 . ie (\\n[.$] >= 3) \
136 . ds ps-desht \\n[ps-desht]
138 . ds ps-desht \" empty
142 \# horizontally, the rectangle is slightly smaller than the image
143 \# to compensate the line thickness (especially needed for TTY devices)
144 \Z'\D'p 0 \\n[ps-desht]u \
145 (\\n[ps-deswid]u - \\n[.H]u) 0 \
147 \# for convenience we also display the image file name (centered vertically);
148 \Z'\v'((\\n[ps-desht]u / 2u) \
150 + ((\\n[rst]u + \\n[rsb]u) / 2u))'\h'1m'\\$1'\
164 .\" end of pspic.tmac