135 lines
4.6 KiB
Scheme
135 lines
4.6 KiB
Scheme
;;; scgamewidgets.scm - a scheme game library (needs scx-0.2 or scheme48-fb)
|
|
;;;
|
|
;;; Copyright (c) 2011-2012 Johan Ceuppens
|
|
;;;
|
|
;;; All rights reserved.
|
|
;;;
|
|
;;; Redistribution and use in source and binary forms, with or without
|
|
;;; modification, are permitted provided that the following conditions
|
|
;;; are met:
|
|
;;; 1. Redistributions of source code must retain the above copyright
|
|
;;; notice, this list of conditions and the following disclaimer.
|
|
;;; 2. Redistributions in binary form must reproduce the above copyright
|
|
;;; notice, this list of conditions and the following disclaimer in the
|
|
;;; documentation and/or other materials provided with the distribution.
|
|
;;; 3. The name of the authors may not be used to endorse or promote products
|
|
;;; derived from this software without specific prior written permission.
|
|
;;;
|
|
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
|
|
;;; IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
;;; OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
;;; IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
;;; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
;;; NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
;;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
;;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
;;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
;;; THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
(load "scgame.scm")
|
|
|
|
;; for inits see scgame.scm
|
|
|
|
(define (make-scgame-widget)
|
|
(define (draw)
|
|
(display-msg "subclass responsability"))
|
|
|
|
(lambda (msg)
|
|
(cond ((eq? msg 'draw) draw)
|
|
(else
|
|
(display-msg "subclass responsability")))))
|
|
|
|
(define (make-button-widget)
|
|
(let ((widget (make-scgame-widget))
|
|
(image #f) ;; pixel array
|
|
(pressed-image #f) ;; pixel array
|
|
(pressed #f)
|
|
(width 0)
|
|
(height 0))
|
|
|
|
(define (set-image filename)
|
|
(set! image (((make-scimage2)'load-image) filename))
|
|
(let ((wh (vector-ref (list->vector image) 1)))
|
|
(set! width (car wh))
|
|
(set! height (cadr wh))
|
|
))
|
|
|
|
(define (set-pressed-image filename)
|
|
(set! pressed-image (((make-scimage2)'load-image) filename))
|
|
(let ((wh (vector-ref (list->vector image) 1)))
|
|
(set! width (car wh))
|
|
(set! height (cadr wh))
|
|
))
|
|
|
|
(define (draw-pressed-image dpy win gc)
|
|
(init-sync-x-events dpy)
|
|
(map-window dpy win)
|
|
(call-with-event-channel
|
|
dpy win (event-mask exposure button-press)
|
|
(lambda (channel)
|
|
(let loop ()
|
|
(if
|
|
(let ((e (receive channel)))
|
|
(cond
|
|
((expose-event? e)
|
|
(clear-window dpy win)
|
|
(draw-points dpy win gc (* width height) 0 0
|
|
(/ width 2) (/ height 2))
|
|
)
|
|
|
|
(else #f)))
|
|
(loop))))))
|
|
|
|
(define (draw-image dpy win gc)
|
|
(init-sync-x-events dpy)
|
|
(map-window dpy win)
|
|
(call-with-event-channel
|
|
dpy win (event-mask exposure button-press)
|
|
(lambda (channel)
|
|
(let loop ()
|
|
(if
|
|
(let ((e (receive channel)))
|
|
(cond
|
|
((expose-event? e)
|
|
(clear-window dpy win)
|
|
(draw-points dpy win gc (* width height) 0 0
|
|
(/ width 2) (/ height 2))
|
|
)
|
|
|
|
(else #f)))
|
|
(loop))))))
|
|
|
|
(define (draw-points dpy win gc count x y)
|
|
(if (zero? (modulo count 100))
|
|
(display-flush dpy))
|
|
(if (not (zero? count))
|
|
(let ((xf (floor (* (+ 1.2 x) width))) ; These lines center the picture
|
|
(yf (floor (* (+ 0.5 y) height))))
|
|
(draw-point dpy win gc (inexact->exact xf) (inexact->exact yf))
|
|
(draw-points dpy win gc ;; FIXME1
|
|
(- count 1)
|
|
(- (* y (+ 1 (sin (* 0.7 x))))
|
|
(* 1.2 (sqrt (abs x))))
|
|
(- 0.21 x)
|
|
width height))))
|
|
|
|
(define (draw)
|
|
(if pressed
|
|
(draw-image)
|
|
(draw-pressed-image))
|
|
(map-window dpy win))
|
|
|
|
(define (press!)
|
|
(set! pressed #t))
|
|
|
|
(define (release!)
|
|
(set! pressed #f))
|
|
|
|
(lambda (msg)
|
|
(cond ((eq? 'set-image) set-image)
|
|
((eq? 'set-pressed-image) set-pressed-image)
|
|
((eq? 'press!) press!)
|
|
((eq? 'release!) release!)
|
|
(widget msg)
|
|
))))
|