►Slideshow:   Figure and Presentation Tools
▼3 Making Slides
On this page:
current-font-size
current-main-font
current-line-sep
current-para-width
current-title-color
current-slide-assembler
current-titlet
set-margin!
set-title-h!
make-slide-inset
slide-inset?
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3.5 Configuration

parameter

(current-font-size) → exact-nonnegative-integer?

(current-font-size n) → void?
  n : exact-nonnegative-integer?
Parameter that determines the font size used by t, para, etc. The default size is 32.

parameter

(current-main-font) → text-style/c

(current-main-font style) → void?
  style : text-style/c
Parameter that determines the font size used by t, para, etc. The default is platform-specific; possible initial values include 'swiss, "Verdana", and "Gill Sans".

parameter

(current-line-sep) → exact-nonnegative-integer?

(current-line-sep n) → void?
  n : exact-nonnegative-integer?
Parameter that controls the amount of space used between lines by para, item, and subitem.

parameter

(current-para-width) → exact-nonnegative-integer?

(current-para-width n) → void?
  n : exact-nonnegative-integer?
Parameter that controls the width of a pict created by para, item, and subitem.

parameter

(current-title-color) → (or/c string? (is-a?/c color%))

(current-title-color color) → void?
  color : (or/c string? (is-a?/c color%))
Parameter used by the default current-titlet to colorize the title. The default is "black".

parameter

(current-slide-assembler) → 
((or/c string? #f)
 exact-nonnegative-integer?
 pict?
 . -> .
 pict?)
(current-slide-assembler proc) → void?
  proc : 
((or/c string? #f)
 exact-nonnegative-integer?
 pict?
 . -> .
 pict?)
Parameter whose value is a function for assembling slide content into a single pict; the assembling function takes a string for the title (or #f), a separation for the title (if any) and pict, and a pict for the slide content (not counting the title).

The result is of the assembler is ct-superimposed with the client area, but the result pict might draw outside the client region to paint the screen margins, too.

The default assembler uses titlet to turn a title string (if any) to a pict. See also current-titlet and set-title-h!.

The slide assembler is not responsible for adding page numbers to the slide; that job belongs to the viewer. See also current-page-number-font, current-page-number-color, and set-page-numbers-visible!.

parameter

(current-titlet) → (string? . -> . pict?)

(current-titlet proc) → void?
  proc : (string? . -> . pict?)
Parameter to configure titlet. The default is

(lambda (s)
  (colorize (text s (current-main-font) 40)
            (current-title-color)))

If this parameter is changed such that the result is a different height, then set-title-h! should be called to update the value produced by title-h, titleless-page, etc.

procedure

(set-margin! amt) → void?

  amt : real?
Changes the margin that surrounds the client area. See also margin.

procedure

(set-title-h! amt) → void?

  amt : real?
Changes the expected height of a title, which adjusts title-h, client-h, full-page, and titleless-page.

procedure

(make-slide-inset left-inset    
  top-inset    
  right-inset    
  bottom-inset) → slide-inset?
  left-inset : exact-nonnegative-integer?
  top-inset : exact-nonnegative-integer?
  right-inset : exact-nonnegative-integer?
  bottom-inset : exact-nonnegative-integer?
Creates a slide inset, which describes a number of pixels to inset the viewer for a slide on each side.

procedure

(slide-inset? v) → boolean?

  v : any/c
Returns #t if v is a slide inset created by make-slide-inset, #f otherwise.

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