21 ps-setup%

▼ |  | The Racket Drawing Toolkit

1 | Overview
2 | bitmap%
3 | bitmap-dc%
4 | brush%
5 | brush-list%
6 | color%
7 | color-database<%>
8 | dc<%>
9 | dc-path%
10 | font%
11 | font-list%
12 | font-name-directory<%>
13 | gl-config%
14 | gl-context<%>
15 | linear-gradient%
16 | pdf-dc%
17 | pen%
18 | pen-list%
19 | point%
20 | post-script-dc%
21 | ps-setup%
22 | radial-gradient%
23 | record-dc%
24 | region%
25 | svg-dc%
26 | Drawing Functions
27 | Drawing Contracts
28 | Signature and Unit
29 | Unsafe Libraries
30 | Drawing Conveniences
31 | Platform Dependencies
| Bibliography
| Index

On this page:

new
copy-from
get-command
get-editor-margin
get-file
get-level-2
get-margin
get-mode
get-orientation
get-paper-name
get-preview-command
get-scaling
get-translation
set-command
set-editor-margin
set-file
set-level-2
set-margin
set-mode
set-orientation
set-paper-name
set-preview-command
set-scaling
set-translation

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class ps-setup% : class?
superclass: object%

A ps-setup% object contains configuration information for producing PostScript files using a post-script-dc% object. To a lesser extent, it contains information for printing with a printer-dc% object.

When a post-script-dc% object is created, its configuration is determined by the current-ps-setup parameter’s ps-setup% value. After a post-script-dc% object is created, it is unaffected by changes to the current-ps-setup parameter or mutations to the ps-setup% object.

> constructor (new ps-setup%) → (is-a?/c ps-setup%)

Creates a new ps-setup% object with the (platform-specific) default configuration.

> > method
> > (send a-ps-setup copy-from |  | source |  |  |  |
> > | [ | copy-filename?]) |  | → |  | void?
> source : (is-a?/c ps-setup%)
> copy-filename? : any/c = #f

Copies the settings copy-from to a-ps-setup, excluding the filename unless copy-filename? is true.

> method (send a-ps-setup get-command) → string?

Historically, gets the printer command used to print a file on Unix. The default is "lpr". This value is not currently used by any platforms.

> > method
> > (send a-ps-setup get-editor-margin |  | h-margin |  |  |  |
> > |  | v-margin) |  | → |  | void?
> h-margin : (box/c (and/c real? (not/c negative?)))
> v-margin : (box/c (and/c real? (not/c negative?)))

Returns the current settings for horizontal and vertical margins when printing an editor<%>. See also set-editor-margin.

> method (send a-ps-setup get-file) → (or/c path-string? #f)

Gets the PostScript output filename. A #f value (the default) indicates that the user should be prompted for a filename when a post-script-dc% object is created.

> method (send a-ps-setup get-level-2) → boolean?

Reports whether Level 2 commands are output in PostScript files.

Currently, Level 2 commands are only needed to include color bitmap images in PostScript output (drawn with draw-bitmap), or bitmap pen and brush stipples. When Level 2 commands are disabled, bitmaps are converted to grayscale images and stipples are not supported.

> > method
> > (send a-ps-setup get-margin |  | h-margin |  |  |  |
> > |  | v-margin) |  | → |  | void?
> h-margin : (box/c (and/c real? (not/c negative?)))
> v-margin : (box/c (and/c real? (not/c negative?)))

Returns the current settings for horizontal and vertical PostScript margins. See also set-margin.

> method (send a-ps-setup get-mode) → (or/c 'preview 'file 'printer)

Gets the printing mode that determines where output is sent: 'preview, 'file, or 'printer. The default for X is 'preview. The value in Windows and Mac OS is always 'file.

> method (send a-ps-setup get-orientation)
> → (or/c 'portrait 'landscape)

Gets the orientation: 'portrait or 'landscape. The default is 'portrait. Unlike most other settings, this one affects native printing (via printer-dc%) as well as PostScript output.

Landscaped orientation affects the size of the drawing area as reported by get-size: the horizontal and vertical sizes determined by the selected paper type are transposed and then scaled.

> method (send a-ps-setup get-paper-name) → string?

Returns the name of the current paper type: "A4 210 x 297 mm", "A3 297 x 420 mm", "Letter 8 1/2 x 11 in", or "Legal 8 1/2 x 14 in". The default is "Letter 8 1/2 x 11 in".

The paper name determines the size of the drawing area as reported by get-size (along with landscape transformations from get-orientation and/or the scaling factors of get-scaling). It also determines the bounding box of PostScript output when a post-script-dc% context is created with a true value for the use-paper-bbox? initialization argument.

> method (send a-ps-setup get-preview-command) → string?

Gets the command used to view a PostScript file for X. The default is "gv". This value is not used by other platforms.

> method (send a-ps-setup get-scaling x y) → void?
> x : (box/c (and/c real? (not/c negative?)))
> y : (box/c (and/c real? (not/c negative?)))

Gets the scaling factor for PostScript output. The x box is filled with the horizontal scaling factor. The y box is filled with the vertical scaling factor. The default is 0.8 by 0.8.

This scale is in addition to a scale that can be set by set-scale in a post-script-dc% context. The size reported by get-size is the size of the selected paper type (transposed for landscaped mode) divided by this scale.

> method (send a-ps-setup get-translation x y) → void?
> x : (box/c (and/c real? (not/c negative?)))
> y : (box/c (and/c real? (not/c negative?)))

Gets the translation (from the bottom left corner) for PostScript output. The x box is filled with the horizontal offset. The y box is filled with the vertical offset. The default is 0.0 and 0.0.

The translation is not scaled by the numbers returned from get-scaling and the translation does not affect the size of the drawing area.

> method (send a-ps-setup set-command command) → void?
> command : string?

Historically, sets the printer command that was used to print a file on Unix. See get-command.

> method (send a-ps-setup set-editor-margin h v) → void?
> h : exact-nonnegative-integer?
> v : exact-nonnegative-integer?

Sets the horizontal and vertical margins used when printing an editor with the print method. These margins are always used for printing, whether the drawing destination is a post-script-dc% or printer-dc%. The margins are in the units of the destination printer-dc% or post-script-dc%. In the case of post-script-dc% printing, the editor margin is in addition to the PostScript margin that is determined by set-margin.

> method (send a-ps-setup set-file filename) → void?
> filename : (or/c path-string? #f)

Sets the PostScript output filename. See get-file.

> method (send a-ps-setup set-level-2 on?) → void?
> on? : any/c

Sets whether Level 2 commands are output in PostScript files. See get-level-2.

> method (send a-ps-setup set-margin h v) → void?
> h : (and/c real? (not/c negative?))
> v : (and/c real? (not/c negative?))

Sets the horizontal and vertical PostScript margins. When drawing to a post-script-dc%, the page size reported by get-size subtracts these margins from the normal page area (before taking into account scaling affects). In addition, drawing into the post-script-dc% produces PostScript output that is offset by the margins.

When using the output of a post-script-dc% as Encapsulated PostScript, the margin values are effectively irrelevant. Changing the margins moves the PostScript image in absolute coordinates, but it also moves the bounding box.

The margins are in unscaled post-script-dc% units, which are points. The default margins are 16 points.

> method (send a-ps-setup set-mode mode) → void?
> mode : (or/c 'preview 'file 'printer)

Sets the printing mode controlling where output is sent. See get-mode.

On Windows and Mac OS, if 'preview or 'printer is provided, an exn:fail:contract exception is raised.

> method (send a-ps-setup set-orientation orientation) → void?
> orientation : (or/c 'portrait 'landscape)

Sets the orientation. See get-orientation.

> method (send a-ps-setup set-paper-name type) → void?
> type : string?

Sets the name of the current paper type. See get-paper-name.

> method (send a-ps-setup set-preview-command command) → void?
> command : string?

Sets the command used to view a PostScript file on Unix. See get-preview-command.

> method (send a-ps-setup set-scaling x y) → void?
> x : (and/c real? (not/c negative?))
> y : (and/c real? (not/c negative?))

Sets the scaling factor for PostScript output. See get-scaling.

> method (send a-ps-setup set-translation x y) → void?
> x : real?
> y : real?

Sets the translation (from the bottom left corner) for PostScript output. See get-translation.
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