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Added the Gui files

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This isn't on the main branch because it uses the word "Commit" to describe the changes and I am afraid of commitment.
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Doug-Richardson 2017-04-14 19:57:07 -04:00 committed by GitHub
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commit 7707b8ec45
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Hermes_Gui1.2.rkt Normal file
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#lang racket
(require racket/gui/base)
;Author:Douglas Richardson
;Notes:Our GUI mostly deals with lists of a list of 3 strings and a number
;although the number is always delt with locally
;When using user-message you need to give it a list of 3 things
;The name of the user as a string, what they said as a string,
;and the color as a string
;Object stuff
(define (make-gui)
(begin
;;Create the frame
(define main-frame (new frame%
[label "Example5"]
[width 500]
[height 700]
))
;;Editing canvas
(define (do-stuff-paint paint-canvas paint-dc)
(do-more-stuff-paint listy paint-canvas paint-dc))
(define (do-more-stuff-paint paint-listy paint-canvas paint-dc)
(if (null? paint-listy)
'()
(begin
(re-draw-message (get-username-from-list (car paint-listy))
(get-message-from-list (car paint-listy))
(get-color-from-list (car paint-listy))
(get-height-from-list (car paint-listy)))
(do-more-stuff-paint (cdr paint-listy) paint-canvas paint-dc))))
(define read-canvas (new canvas%
[parent main-frame]
[paint-callback do-stuff-paint]
[style '(hscroll vscroll)]
))
(send read-canvas init-auto-scrollbars #f #f 0 0);Start with no scrollbars
;;text-field stuff
(define (text-feild-callback callback-type other-thing)
(if (equal? 'text-field-enter (send other-thing get-event-type))
(button-do-stuff 'irrelevant 'not-used)
'()))
(define input (new text-field%
[parent main-frame]
[label "Username:"]
[callback text-feild-callback]
))
;;button stuff
(define (button-do-stuff b e);b and e do nothing :/
(begin
(if (color-change-request? (send input get-value))
(set! my-color (get-color-from-input (send input get-value)))
(if (< 0 (string-length (send input get-value)))
(send-message (send input get-value) my-color)
'()))
(send input set-value "")
))
(define send-button (new button%
[parent main-frame]
[label "Send"]
[callback button-do-stuff]))
;;I forget what these do but don't move them
(define dc (send read-canvas get-dc))
(send dc set-scale 1 1)
(send dc set-text-foreground "black")
;;messaging stuff
(define (user-message username input color)
(begin
(send dc set-text-foreground color)
(send dc draw-text (string-append username ":" input) 0 height)
(set! listy (appendlist listy (list username input color height)))
(set! height (+ height 15))
(set! min-v-size (+ min-v-size 15))
(if (> (* 20 (string-length input)) min-h-size)
(set! min-h-size (* 20 (string-length input)))
'())
(send read-canvas init-auto-scrollbars min-h-size min-v-size 0 1)
))
;;Add a function that parces input from a string and extracts elements
(define (send-message input color)
(user-message name input color))
;;Although re-draw is kind of misleading, it is just print the whole
;;list of strings to the screen
(define (re-draw-message username input color in-height)
(begin
(send dc set-text-foreground color)
(send dc draw-text (string-append username ":" input) 0 in-height)
))
(define (update given-list)
(begin (set! listy '())
(set! height 0)
(update-helper given-list)))
(define (update-helper given-list)
(if (null? given-list)
'()
(if (null? (car given-list))
'()
(begin (user-message
(get-username-from-list (car given-list))
(get-message-from-list (car given-list))
(get-color-from-list (car given-list)))
(update-helper (cdr given-list))))))
;;Variables go below functions
(define name "Me")
(define min-h-size 80)
(define min-v-size 30)
(define listy (list (list "Server" "Connected" "Red" 0)))
(define my-color "black")
(define height 15)
;;dispatch goes below that
(define (dispatch command)
(cond ((eq? command 'show) (send main-frame show #t))
((eq? command 'send) send-message)
((eq? command 'set-name) (lambda (newname) (if (string? newname)
(set! name newname)
(print "Thats not good"))))
((eq? command 'recieve-message) user-message)
((eq? command 'get-list) listy)
((eq? command 'set-list) update)
;;Something up with that
(else (error "Invalid Request" command))
))
;;dispatch goes below that
dispatch))
;This one displays information
;Initilize scrolling
;Then we need to find out if we need them or not.
;Listy is going to be a list of lists of strings
;each element in listy will contain three strings
;the username the message they said and the color they used
;The the height the message should display at
(define (appendlist listoflist add-to-end)
(if (null? listoflist)
(cons add-to-end '())
(cons (car listoflist) (appendlist (cdr listoflist) add-to-end))))
(define (get-username-from-list in-list)
(car in-list))
(define (get-message-from-list in-list)
(car (cdr in-list)))
(define (get-color-from-list in-list)
(car (cdr (cdr in-list))))
(define (get-height-from-list in-list)
(car (cdr (cdr (cdr in-list)))))
;this one is a crap version of justpressing the enter key
(define (color-change-request? given-string)
(if (> (string-length given-string) 7)
(if (equal? (substring given-string 0 6) "/color")
#t
#f)
#f))
(define (get-color-from-input given-string)
(substring given-string 7))
;(define thing1 (make-gui))
;(define thing2 (make-gui))