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Diffstat (limited to 'doc/CanvPsY.3')
| -rw-r--r-- | doc/CanvPsY.3 | 240 |
1 files changed, 120 insertions, 120 deletions
diff --git a/doc/CanvPsY.3 b/doc/CanvPsY.3 index 05b214e..7548099 100644 --- a/doc/CanvPsY.3 +++ b/doc/CanvPsY.3 @@ -1,120 +1,120 @@ -'\"
-'\" 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.
-'\"
-'\" RCS: @(#) $Id: CanvPsY.3,v 1.7 2008/06/30 22:57:00 dkf Exp $
-'\"
-.so man.macros
-.TH Tk_CanvasPs 3 4.0 Tk "Tk Library Procedures"
-.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 \fIinterp->result\fR and \fBTCL_OK\fR is returned
-unless an error occurs, in which case \fBTCL_ERROR\fR is returned and
-\fIinterp->result\fR 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 \fIinterp->result\fR and returns
-\fBTCL_OK\fR unless an error occurs, in which case \fBTCL_ERROR\fR is returned and
-\fIinterp->result\fR 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 \fIinterp->result\fR and returns \fBTCL_OK\fR
-unless an error occurs, in which case \fBTCL_ERROR\fR is returned and
-\fIinterp->result\fR 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 \fIinterp->result\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 \fIinterp->result\fR and \fBTCL_OK\fR is
-returned, unless an error occurs, in which case \fBTCL_ERROR\fR is returned and
-\fIinterp->result\fR is overwritten with an error message.
-.SH KEYWORDS
-bitmap, canvas, color, font, path, Postscript, stipple
+'\" +'\" 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. +'\" +'\" RCS: @(#) $Id: CanvPsY.3,v 1.8 2008/07/08 22:40:50 patthoyts Exp $ +'\" +.so man.macros +.TH Tk_CanvasPs 3 4.0 Tk "Tk Library Procedures" +.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 \fIinterp->result\fR and \fBTCL_OK\fR is returned +unless an error occurs, in which case \fBTCL_ERROR\fR is returned and +\fIinterp->result\fR 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 \fIinterp->result\fR and returns +\fBTCL_OK\fR unless an error occurs, in which case \fBTCL_ERROR\fR is returned and +\fIinterp->result\fR 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 \fIinterp->result\fR and returns \fBTCL_OK\fR +unless an error occurs, in which case \fBTCL_ERROR\fR is returned and +\fIinterp->result\fR 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 \fIinterp->result\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 \fIinterp->result\fR and \fBTCL_OK\fR is +returned, unless an error occurs, in which case \fBTCL_ERROR\fR is returned and +\fIinterp->result\fR is overwritten with an error message. +.SH KEYWORDS +bitmap, canvas, color, font, path, Postscript, stipple |