--- /dev/null
+'\"
+'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\"
+.TH Tk_CanvasPs 3 4.0 Tk "Tk Library Procedures"
+.\" The -*- nroff -*- definitions below are for supplemental macros used
+.\" in Tcl/Tk manual entries.
+.\"
+.\" .AP type name in/out ?indent?
+.\" Start paragraph describing an argument to a library procedure.
+.\" type is type of argument (int, etc.), in/out is either "in", "out",
+.\" or "in/out" to describe whether procedure reads or modifies arg,
+.\" and indent is equivalent to second arg of .IP (shouldn't ever be
+.\" needed; use .AS below instead)
+.\"
+.\" .AS ?type? ?name?
+.\" Give maximum sizes of arguments for setting tab stops. Type and
+.\" name are examples of largest possible arguments that will be passed
+.\" to .AP later. If args are omitted, default tab stops are used.
+.\"
+.\" .BS
+.\" Start box enclosure. From here until next .BE, everything will be
+.\" enclosed in one large box.
+.\"
+.\" .BE
+.\" End of box enclosure.
+.\"
+.\" .CS
+.\" Begin code excerpt.
+.\"
+.\" .CE
+.\" End code excerpt.
+.\"
+.\" .VS ?version? ?br?
+.\" Begin vertical sidebar, for use in marking newly-changed parts
+.\" of man pages. The first argument is ignored and used for recording
+.\" the version when the .VS was added, so that the sidebars can be
+.\" found and removed when they reach a certain age. If another argument
+.\" is present, then a line break is forced before starting the sidebar.
+.\"
+.\" .VE
+.\" End of vertical sidebar.
+.\"
+.\" .DS
+.\" Begin an indented unfilled display.
+.\"
+.\" .DE
+.\" End of indented unfilled display.
+.\"
+.\" .SO ?manpage?
+.\" Start of list of standard options for a Tk widget. The manpage
+.\" argument defines where to look up the standard options; if
+.\" omitted, defaults to "options". The options follow on successive
+.\" lines, in three columns separated by tabs.
+.\"
+.\" .SE
+.\" End of list of standard options for a Tk widget.
+.\"
+.\" .OP cmdName dbName dbClass
+.\" Start of description of a specific option. cmdName gives the
+.\" option's name as specified in the class command, dbName gives
+.\" the option's name in the option database, and dbClass gives
+.\" the option's class in the option database.
+.\"
+.\" .UL arg1 arg2
+.\" Print arg1 underlined, then print arg2 normally.
+.\"
+.\" .QW arg1 ?arg2?
+.\" Print arg1 in quotes, then arg2 normally (for trailing punctuation).
+.\"
+.\" .PQ arg1 ?arg2?
+.\" Print an open parenthesis, arg1 in quotes, then arg2 normally
+.\" (for trailing punctuation) and then a closing parenthesis.
+.\"
+.\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
+.if t .wh -1.3i ^B
+.nr ^l \n(.l
+.ad b
+.\" # Start an argument description
+.de AP
+.ie !"\\$4"" .TP \\$4
+.el \{\
+. ie !"\\$2"" .TP \\n()Cu
+. el .TP 15
+.\}
+.ta \\n()Au \\n()Bu
+.ie !"\\$3"" \{\
+\&\\$1 \\fI\\$2\\fP (\\$3)
+.\".b
+.\}
+.el \{\
+.br
+.ie !"\\$2"" \{\
+\&\\$1 \\fI\\$2\\fP
+.\}
+.el \{\
+\&\\fI\\$1\\fP
+.\}
+.\}
+..
+.\" # define tabbing values for .AP
+.de AS
+.nr )A 10n
+.if !"\\$1"" .nr )A \\w'\\$1'u+3n
+.nr )B \\n()Au+15n
+.\"
+.if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
+.nr )C \\n()Bu+\\w'(in/out)'u+2n
+..
+.AS Tcl_Interp Tcl_CreateInterp in/out
+.\" # BS - start boxed text
+.\" # ^y = starting y location
+.\" # ^b = 1
+.de BS
+.br
+.mk ^y
+.nr ^b 1u
+.if n .nf
+.if n .ti 0
+.if n \l'\\n(.lu\(ul'
+.if n .fi
+..
+.\" # BE - end boxed text (draw box now)
+.de BE
+.nf
+.ti 0
+.mk ^t
+.ie n \l'\\n(^lu\(ul'
+.el \{\
+.\" Draw four-sided box normally, but don't draw top of
+.\" box if the box started on an earlier page.
+.ie !\\n(^b-1 \{\
+\h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
+.\}
+.el \}\
+\h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
+.\}
+.\}
+.fi
+.br
+.nr ^b 0
+..
+.\" # VS - start vertical sidebar
+.\" # ^Y = starting y location
+.\" # ^v = 1 (for troff; for nroff this doesn't matter)
+.de VS
+.if !"\\$2"" .br
+.mk ^Y
+.ie n 'mc \s12\(br\s0
+.el .nr ^v 1u
+..
+.\" # VE - end of vertical sidebar
+.de VE
+.ie n 'mc
+.el \{\
+.ev 2
+.nf
+.ti 0
+.mk ^t
+\h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n'
+.sp -1
+.fi
+.ev
+.\}
+.nr ^v 0
+..
+.\" # Special macro to handle page bottom: finish off current
+.\" # box/sidebar if in box/sidebar mode, then invoked standard
+.\" # page bottom macro.
+.de ^B
+.ev 2
+'ti 0
+'nf
+.mk ^t
+.if \\n(^b \{\
+.\" Draw three-sided box if this is the box's first page,
+.\" draw two sides but no top otherwise.
+.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
+.el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
+.\}
+.if \\n(^v \{\
+.nr ^x \\n(^tu+1v-\\n(^Yu
+\kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c
+.\}
+.bp
+'fi
+.ev
+.if \\n(^b \{\
+.mk ^y
+.nr ^b 2
+.\}
+.if \\n(^v \{\
+.mk ^Y
+.\}
+..
+.\" # DS - begin display
+.de DS
+.RS
+.nf
+.sp
+..
+.\" # DE - end display
+.de DE
+.fi
+.RE
+.sp
+..
+.\" # SO - start of list of standard options
+.de SO
+'ie '\\$1'' .ds So \\fBoptions\\fR
+'el .ds So \\fB\\$1\\fR
+.SH "STANDARD OPTIONS"
+.LP
+.nf
+.ta 5.5c 11c
+.ft B
+..
+.\" # SE - end of list of standard options
+.de SE
+.fi
+.ft R
+.LP
+See the \\*(So manual entry for details on the standard options.
+..
+.\" # OP - start of full description for a single option
+.de OP
+.LP
+.nf
+.ta 4c
+Command-Line Name: \\fB\\$1\\fR
+Database Name: \\fB\\$2\\fR
+Database Class: \\fB\\$3\\fR
+.fi
+.IP
+..
+.\" # CS - begin code excerpt
+.de CS
+.RS
+.nf
+.ta .25i .5i .75i 1i
+..
+.\" # CE - end code excerpt
+.de CE
+.fi
+.RE
+..
+.\" # UL - underline word
+.de UL
+\\$1\l'|0\(ul'\\$2
+..
+.\" # QW - apply quotation marks to word
+.de QW
+.ie '\\*(lq'"' ``\\$1''\\$2
+.\"" fix emacs highlighting
+.el \\*(lq\\$1\\*(rq\\$2
+..
+.\" # PQ - apply parens and quotation marks to word
+.de PQ
+.ie '\\*(lq'"' (``\\$1''\\$2)\\$3
+.\"" fix emacs highlighting
+.el (\\*(lq\\$1\\*(rq\\$2)\\$3
+..
+.\" # QR - quoted range
+.de QR
+.ie '\\*(lq'"' ``\\$1''\\-``\\$2''\\$3
+.\"" fix emacs highlighting
+.el \\*(lq\\$1\\*(rq\\-\\*(lq\\$2\\*(rq\\$3
+..
+.\" # MT - "empty" string
+.de MT
+.QW ""
+..
+.BS
+.SH NAME
+Tk_CanvasPsY, Tk_CanvasPsBitmap, Tk_CanvasPsColor, Tk_CanvasPsFont, Tk_CanvasPsPath, Tk_CanvasPsStipple \- utility procedures for generating Postscript for canvases
+.SH SYNOPSIS
+.nf
+\fB#include <tk.h>\fR
+.sp
+double
+\fBTk_CanvasPsY\fR(\fIcanvas, canvasY\fR)
+.sp
+int
+\fBTk_CanvasPsBitmap\fR(\fIinterp, canvas, bitmap, x, y, width, height\fR)
+.sp
+int
+\fBTk_CanvasPsColor\fR(\fIinterp, canvas, colorPtr\fR)
+.sp
+int
+\fBTk_CanvasPsFont\fR(\fIinterp, canvas, tkFont\fR)
+.sp
+\fBTk_CanvasPsPath\fR(\fIinterp, canvas, coordPtr, numPoints\fR)
+.sp
+int
+\fBTk_CanvasPsStipple\fR(\fIinterp, canvas, bitmap\fR)
+.SH ARGUMENTS
+.AS "unsigned int" "numPoints"
+.AP Tk_Canvas canvas in
+A token that identifies a canvas widget for which Postscript is
+being generated.
+.AP double canvasY in
+Y-coordinate in the space of the canvas.
+.AP Tcl_Interp *interp in/out
+A Tcl interpreter; Postscript is appended to its result, or the
+result may be replaced with an error message.
+.AP Pixmap bitmap in
+Bitmap to use for generating Postscript.
+.AP int x in
+X-coordinate within \fIbitmap\fR of left edge of region to output.
+.AP int y in
+Y-coordinate within \fIbitmap\fR of top edge of region to output.
+.AP "int" width in
+Width of region of bitmap to output, in pixels.
+.AP "int" height in
+Height of region of bitmap to output, in pixels.
+.AP XColor *colorPtr in
+Information about color value to set in Postscript.
+.AP Tk_Font tkFont in
+Font for which Postscript is to be generated.
+.AP double *coordPtr in
+Pointer to an array of coordinates for one or more
+points specified in canvas coordinates.
+The order of values in \fIcoordPtr\fR is x1, y1, x2, y2, x3, y3,
+and so on.
+.AP int numPoints in
+Number of points at \fIcoordPtr\fR.
+.BE
+.SH DESCRIPTION
+.PP
+These procedures are called by canvas type managers to carry out
+common functions related to generating Postscript.
+Most of the procedures take a \fIcanvas\fR argument, which
+refers to a canvas widget for which Postscript is being
+generated.
+.PP
+\fBTk_CanvasPsY\fR takes as argument a y-coordinate in the space of
+a canvas and returns the value that should be used for that point
+in the Postscript currently being generated for \fIcanvas\fR.
+Y coordinates require transformation because Postscript uses an
+origin at the lower-left corner whereas X uses an origin at the
+upper-left corner.
+Canvas x coordinates can be used directly in Postscript without
+transformation.
+.PP
+\fBTk_CanvasPsBitmap\fR generates Postscript to describe a region
+of a bitmap.
+The Postscript is generated in proper image data format for Postscript,
+i.e., as data between angle brackets, one bit per pixel.
+The Postscript is appended to the result of interpreter \fIinterp\fR
+and \fBTCL_OK\fR is returned unless an error occurs, in which case
+\fBTCL_ERROR\fR is returned and the interpreter result is overwritten
+with an error message.
+.PP
+\fBTk_CanvasPsColor\fR generates Postscript to set the current color
+to correspond to its \fIcolorPtr\fR argument, taking into account any
+color map specified in the \fBpostscript\fR command.
+It appends the Postscript to the interpreter \fIinterp\fR's result and returns
+\fBTCL_OK\fR unless an error occurs, in which case \fBTCL_ERROR\fR is
+returned and the interpreter's result is overwritten with an error message.
+.PP
+\fBTk_CanvasPsFont\fR generates Postscript that sets the current font
+to match \fItkFont\fR as closely as possible.
+\fBTk_CanvasPsFont\fR takes into account any font map specified
+in the \fBpostscript\fR command, and it does
+the best it can at mapping X fonts to Postscript fonts.
+It appends the Postscript to interpreter \fIinterp\fR's result and
+returns \fBTCL_OK\fR unless an error occurs, in which case
+\fBTCL_ERROR\fR is returned and the interpreter's result is
+overwritten with an error message.
+.PP
+\fBTk_CanvasPsPath\fR generates Postscript to set the current path
+to the set of points given by \fIcoordPtr\fR and \fInumPoints\fR.
+It appends the resulting Postscript to the result of interpreter \fIinterp\fR.
+.PP
+\fBTk_CanvasPsStipple\fR generates Postscript that will fill the
+current path in stippled fashion.
+It uses \fIbitmap\fR as the stipple pattern and the current Postscript
+color; ones in the stipple bitmap are drawn in the current color, and
+zeroes are not drawn at all.
+The Postscript is appended to interpreter \fIinterp\fR's result and
+\fBTCL_OK\fR is returned, unless an error occurs, in which case
+\fBTCL_ERROR\fR is returned and the interpreter's result is
+overwritten with an error message.
+.SH KEYWORDS
+bitmap, canvas, color, font, path, Postscript, stipple
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