▼ |  | Framework: Racket GUI Application Framework

1 | Framework Libraries Overview
2 | Application
3 | Autosave
4 | Canvas
5 | Color Model
6 | Color Prefs
7 | Color
8 | Comment Box
9 | Decorated Editor Snip
10 | Editor Snip
11 | Editor
12 | Exit
13 | Finder
14 | Frame
15 | Group
16 | GUI Utilities
17 | Handler
18 | Icon
19 | Keymap
20 | Menu
21 | Mode
22 | Number Snip
23 | Panel
24 | Pasteboard
25 | Path Utils
26 | Preferences
27 | Preferences, Textual
28 | Racket
29 | Text
30 | Splash
31 | Test
32 | Version
33 | Backwards Compatibility
34 | Signatures
35 | Unit
| Index

On this page:

editor-snip: decorated<%>
get-corner-bitmap
get-color
get-menu
get-position
reset-min-sizes
editor-snip: decorated-mixin
get-corner-bitmap
get-color
get-menu
get-position
editor-snip: decorated%
new
make-snip
make-editor
copy
editor-snip: decorated-snipclass%
make-snip
read

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### 10`` Editor Snip

interface editor-snip:decorated<%> : interface?
implements: | editor-snip%

> > method (send an-editor-snip:decorated get-corner-bitmap)
> > → (or/c false/c (is-a?/c bitmap%))

> Returns a bitmap that is drawn in the upper-right corner of this snip.

> > method (send an-editor-snip:decorated get-color)
> > → (or/c string? (is-a?/c color%))

> Returns the color used to draw the background part of the snip.

> > method (send an-editor-snip:decorated get-menu)
> > → (or/c false/c (is-a?/c popup-menu%))

> Returns a popup menu that is used when clicking on the top part of the snip.

> > method (send an-editor-snip:decorated get-position)
> > → (symbols 'top-right 'left-top)

> Returns the location of the image and the clickable region. The symbol 'top-right indicates top portion is clickable and icon on right. The symbol 'left-top means left portion is clickable and icon on top.

> > method (send an-editor-snip:decorated reset-min-sizes) → void?

> Sets the minimum sizes based on the result of get-corner-bitmap.

mixin editor-snip:decorated-mixin : (class? . -> . class?)
argument extends/implements: | editor-snip%
result implements: | editor-snip:decorated<%>

> > method (send an-editor-snip:decorated get-corner-bitmap)
> > → (or/c false/c (is-a?/c bitmap%))

> Returns #f.

> > method (send an-editor-snip:decorated get-color)
> > → (or/c string? (is-a?/c color%))

> Returns

> > (if (preferences:get 'framework:white-on-black?)
> > "white"
> > "black")

> > method (send an-editor-snip:decorated get-menu)
> > → (or/c false/c (is-a?/c popup-menu%))

> Returns #f.

> > method (send an-editor-snip:decorated get-position)
> > → (symbols 'top-right 'left-top)

> Returns 'top-right.

class editor-snip:decorated% : class?
superclass: (editor-snip:decorated-mixin editor-snip%)

> > constructor (new editor-snip:decorated% ...superclass-args...)
> > → (is-a?/c editor-snip:decorated%)

> Invokes the super constructor with the keyword editor as a call to make-editor.

> > method (send an-editor-snip:decorated make-snip)
> > → (is-a?/c editor-snip:decorated%)

> This method should return an instance of the class it is invoked in. If you create a subclass of this class, be sure to override this method and have it create instances of the subclass.

> > method (send an-editor-snip:decorated make-editor)
> > → (is-a?/c editor<%>)

> Creates an editor to be used in this snip.

> > method (send an-editor-snip:decorated copy)
> > → (is-a?/c editor-snip:decorated%)

> Uses the make-editor and make-snip methods to create a copy of this snip, as follows:

> > #lang (let ([snip (make-snip)]) (send snip set-editor (send (get-editor) copy-self)) (send snip set-style (get-style)) snip)

class editor-snip:decorated-snipclass% : class?
superclass: snip-class%

> > method (send an-editor-snip:decorated-snipclass make-snip stream-in)
> > → (is-a?/c editor-snip:decorated<%>)
> > stream-in : (is-a?/c editor-stream-in%)

> Returns an instance of editor-snip:decorated%.

> > method (send an-editor-snip:decorated-snipclass read stream-in)
> > → (is-a?/c editor-snip:decorated<%>)
> > stream-in : (is-a?/c editor-stream-in%)

> Calls make-snip to get an object and then invokes its editor<%>’s read-from-file method in order to read a snip from stream-in, eg:

> > (let ([snip (make-snip stream-in)])
> > (send (send snip get-editor) read-from-file stream-in #f)
> > snip)

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