2 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
4 '\" See the file "license.terms" for information on usage and redistribution
5 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
7 .TH Tk_CanvasPs 3 4.0 Tk "Tk Library Procedures"
8 .\" The -*- nroff -*- definitions below are for supplemental macros used
9 .\" in Tcl/Tk manual entries.
11 .\" .AP type name in/out ?indent?
12 .\" Start paragraph describing an argument to a library procedure.
13 .\" type is type of argument (int, etc.), in/out is either "in", "out",
14 .\" or "in/out" to describe whether procedure reads or modifies arg,
15 .\" and indent is equivalent to second arg of .IP (shouldn't ever be
16 .\" needed; use .AS below instead)
19 .\" Give maximum sizes of arguments for setting tab stops. Type and
20 .\" name are examples of largest possible arguments that will be passed
21 .\" to .AP later. If args are omitted, default tab stops are used.
24 .\" Start box enclosure. From here until next .BE, everything will be
25 .\" enclosed in one large box.
28 .\" End of box enclosure.
31 .\" Begin code excerpt.
36 .\" .VS ?version? ?br?
37 .\" Begin vertical sidebar, for use in marking newly-changed parts
38 .\" of man pages. The first argument is ignored and used for recording
39 .\" the version when the .VS was added, so that the sidebars can be
40 .\" found and removed when they reach a certain age. If another argument
41 .\" is present, then a line break is forced before starting the sidebar.
44 .\" End of vertical sidebar.
47 .\" Begin an indented unfilled display.
50 .\" End of indented unfilled display.
53 .\" Start of list of standard options for a Tk widget. The manpage
54 .\" argument defines where to look up the standard options; if
55 .\" omitted, defaults to "options". The options follow on successive
56 .\" lines, in three columns separated by tabs.
59 .\" End of list of standard options for a Tk widget.
61 .\" .OP cmdName dbName dbClass
62 .\" Start of description of a specific option. cmdName gives the
63 .\" option's name as specified in the class command, dbName gives
64 .\" the option's name in the option database, and dbClass gives
65 .\" the option's class in the option database.
68 .\" Print arg1 underlined, then print arg2 normally.
71 .\" Print arg1 in quotes, then arg2 normally (for trailing punctuation).
74 .\" Print an open parenthesis, arg1 in quotes, then arg2 normally
75 .\" (for trailing punctuation) and then a closing parenthesis.
77 .\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
81 .\" # Start an argument description
85 . ie !"\\$2"" .TP \\n()Cu
90 \&\\$1 \\fI\\$2\\fP (\\$3)
103 .\" # define tabbing values for .AP
106 .if !"\\$1"" .nr )A \\w'\\$1'u+3n
109 .if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
110 .nr )C \\n()Bu+\\w'(in/out)'u+2n
112 .AS Tcl_Interp Tcl_CreateInterp in/out
113 .\" # BS - start boxed text
114 .\" # ^y = starting y location
122 .if n \l'\\n(.lu\(ul'
125 .\" # BE - end boxed text (draw box now)
130 .ie n \l'\\n(^lu\(ul'
132 .\" Draw four-sided box normally, but don't draw top of
133 .\" box if the box started on an earlier page.
135 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
138 \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
145 .\" # VS - start vertical sidebar
146 .\" # ^Y = starting y location
147 .\" # ^v = 1 (for troff; for nroff this doesn't matter)
151 .ie n 'mc \s12\(br\s0
154 .\" # VE - end of vertical sidebar
162 \h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n'
169 .\" # Special macro to handle page bottom: finish off current
170 .\" # box/sidebar if in box/sidebar mode, then invoked standard
171 .\" # page bottom macro.
178 .\" Draw three-sided box if this is the box's first page,
179 .\" draw two sides but no top otherwise.
180 .ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
181 .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
184 .nr ^x \\n(^tu+1v-\\n(^Yu
185 \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c
198 .\" # DS - begin display
204 .\" # DE - end display
210 .\" # SO - start of list of standard options
212 'ie '\\$1'' .ds So \\fBoptions\\fR
213 'el .ds So \\fB\\$1\\fR
214 .SH "STANDARD OPTIONS"
220 .\" # SE - end of list of standard options
225 See the \\*(So manual entry for details on the standard options.
227 .\" # OP - start of full description for a single option
232 Command-Line Name: \\fB\\$1\\fR
233 Database Name: \\fB\\$2\\fR
234 Database Class: \\fB\\$3\\fR
238 .\" # CS - begin code excerpt
244 .\" # CE - end code excerpt
249 .\" # UL - underline word
253 .\" # QW - apply quotation marks to word
255 .ie '\\*(lq'"' ``\\$1''\\$2
256 .\"" fix emacs highlighting
257 .el \\*(lq\\$1\\*(rq\\$2
259 .\" # PQ - apply parens and quotation marks to word
261 .ie '\\*(lq'"' (``\\$1''\\$2)\\$3
262 .\"" fix emacs highlighting
263 .el (\\*(lq\\$1\\*(rq\\$2)\\$3
265 .\" # QR - quoted range
267 .ie '\\*(lq'"' ``\\$1''\\-``\\$2''\\$3
268 .\"" fix emacs highlighting
269 .el \\*(lq\\$1\\*(rq\\-\\*(lq\\$2\\*(rq\\$3
271 .\" # MT - "empty" string
277 Tk_CanvasPsY, Tk_CanvasPsBitmap, Tk_CanvasPsColor, Tk_CanvasPsFont, Tk_CanvasPsPath, Tk_CanvasPsStipple \- utility procedures for generating Postscript for canvases
280 \fB#include <tk.h>\fR
283 \fBTk_CanvasPsY\fR(\fIcanvas, canvasY\fR)
286 \fBTk_CanvasPsBitmap\fR(\fIinterp, canvas, bitmap, x, y, width, height\fR)
289 \fBTk_CanvasPsColor\fR(\fIinterp, canvas, colorPtr\fR)
292 \fBTk_CanvasPsFont\fR(\fIinterp, canvas, tkFont\fR)
294 \fBTk_CanvasPsPath\fR(\fIinterp, canvas, coordPtr, numPoints\fR)
297 \fBTk_CanvasPsStipple\fR(\fIinterp, canvas, bitmap\fR)
299 .AS "unsigned int" "numPoints"
300 .AP Tk_Canvas canvas in
301 A token that identifies a canvas widget for which Postscript is
303 .AP double canvasY in
304 Y-coordinate in the space of the canvas.
305 .AP Tcl_Interp *interp in/out
306 A Tcl interpreter; Postscript is appended to its result, or the
307 result may be replaced with an error message.
309 Bitmap to use for generating Postscript.
311 X-coordinate within \fIbitmap\fR of left edge of region to output.
313 Y-coordinate within \fIbitmap\fR of top edge of region to output.
315 Width of region of bitmap to output, in pixels.
317 Height of region of bitmap to output, in pixels.
318 .AP XColor *colorPtr in
319 Information about color value to set in Postscript.
320 .AP Tk_Font tkFont in
321 Font for which Postscript is to be generated.
322 .AP double *coordPtr in
323 Pointer to an array of coordinates for one or more
324 points specified in canvas coordinates.
325 The order of values in \fIcoordPtr\fR is x1, y1, x2, y2, x3, y3,
328 Number of points at \fIcoordPtr\fR.
332 These procedures are called by canvas type managers to carry out
333 common functions related to generating Postscript.
334 Most of the procedures take a \fIcanvas\fR argument, which
335 refers to a canvas widget for which Postscript is being
338 \fBTk_CanvasPsY\fR takes as argument a y-coordinate in the space of
339 a canvas and returns the value that should be used for that point
340 in the Postscript currently being generated for \fIcanvas\fR.
341 Y coordinates require transformation because Postscript uses an
342 origin at the lower-left corner whereas X uses an origin at the
344 Canvas x coordinates can be used directly in Postscript without
347 \fBTk_CanvasPsBitmap\fR generates Postscript to describe a region
349 The Postscript is generated in proper image data format for Postscript,
350 i.e., as data between angle brackets, one bit per pixel.
351 The Postscript is appended to the result of interpreter \fIinterp\fR
352 and \fBTCL_OK\fR is returned unless an error occurs, in which case
353 \fBTCL_ERROR\fR is returned and the interpreter result is overwritten
354 with an error message.
356 \fBTk_CanvasPsColor\fR generates Postscript to set the current color
357 to correspond to its \fIcolorPtr\fR argument, taking into account any
358 color map specified in the \fBpostscript\fR command.
359 It appends the Postscript to the interpreter \fIinterp\fR's result and returns
360 \fBTCL_OK\fR unless an error occurs, in which case \fBTCL_ERROR\fR is
361 returned and the interpreter's result is overwritten with an error message.
363 \fBTk_CanvasPsFont\fR generates Postscript that sets the current font
364 to match \fItkFont\fR as closely as possible.
365 \fBTk_CanvasPsFont\fR takes into account any font map specified
366 in the \fBpostscript\fR command, and it does
367 the best it can at mapping X fonts to Postscript fonts.
368 It appends the Postscript to interpreter \fIinterp\fR's result and
369 returns \fBTCL_OK\fR unless an error occurs, in which case
370 \fBTCL_ERROR\fR is returned and the interpreter's result is
371 overwritten with an error message.
373 \fBTk_CanvasPsPath\fR generates Postscript to set the current path
374 to the set of points given by \fIcoordPtr\fR and \fInumPoints\fR.
375 It appends the resulting Postscript to the result of interpreter \fIinterp\fR.
377 \fBTk_CanvasPsStipple\fR generates Postscript that will fill the
378 current path in stippled fashion.
379 It uses \fIbitmap\fR as the stipple pattern and the current Postscript
380 color; ones in the stipple bitmap are drawn in the current color, and
381 zeroes are not drawn at all.
382 The Postscript is appended to interpreter \fIinterp\fR's result and
383 \fBTCL_OK\fR is returned, unless an error occurs, in which case
384 \fBTCL_ERROR\fR is returned and the interpreter's result is
385 overwritten with an error message.
387 bitmap, canvas, color, font, path, Postscript, stipple