99 lines
4.0 KiB
Scheme
99 lines
4.0 KiB
Scheme
;; wait-event blocks the current thread until an event is available,
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;; and then it returns this new event.
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(define (wait-event dpy) ; needs ports, locks
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(let ((port (display-message-inport dpy)))
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(disable-interrupts!)
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(if (not (char-ready? port))
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(begin
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(obtain-lock (port-lock port))
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(add-pending-channel (port->channel port))
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(wait-for-channel (port->channel port)) ;; enables interrupts
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(release-lock (port-lock port)))
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(enable-interrupts!))
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(next-event dpy)))
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(define (event-ready? display)
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(char-ready? (display-message-inport display)))
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;; creates an event type
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(define (complete-event type args)
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(let ((constructor (event-constructor type)))
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(apply constructor (cons type (vector->list args)))))
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(define (event-constructor type)
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(cond
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((or (eq? type (event-type key-press))
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(eq? type (event-type key-release))) make-key-event)
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((or (eq? type (event-type button-press))
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(eq? type (event-type button-release))) make-button-event)
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((eq? type (event-type motion-notify)) make-motion-event)
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((or (eq? type (event-type enter-notify))
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(eq? type (event-type leave-notify))) make-crossing-event)
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((or (eq? type (event-type focus-in))
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(eq? type (event-type focus-out))) make-focus-change-event)
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((eq? type (event-type keymap-notify)) make-keymap-event)
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((eq? type (event-type expose)) make-expose-event)
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((eq? type (event-type graphics-expose)) make-graphics-expose-event)
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((eq? type (event-type no-expose)) make-no-expose-event)
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((eq? type (event-type visibility-notify)) make-visibility-event)
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((eq? type (event-type create-notify)) make-create-window-event)
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((eq? type (event-type destroy-notify)) make-destroy-window-event)
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((eq? type (event-type unmap-notify)) make-unmap-event)
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((eq? type (event-type map-notify)) make-map-event)
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((eq? type (event-type map-request)) make-map-request-event)
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((eq? type (event-type reparent-notify)) make-reparent-event)
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((eq? type (event-type configure-notify)) make-configure-event)
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((eq? type (event-type configure-request)) make-configure-request-event)
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((eq? type (event-type gravity-notify)) make-gravity-event)
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((eq? type (event-type resize-request)) make-resize-request-event)
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((eq? type (event-type circulate-notify)) make-circulate-event)
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((eq? type (event-type circulate-request)) make-circulate-request-event)
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((eq? type (event-type property-notify)) make-property-event)
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((eq? type (event-type selection-clear)) make-selection-clear-event)
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((eq? type (event-type selection-request)) make-selection-request-event)
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((eq? type (event-type selection-notify)) make-selection-event)
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((eq? type (event-type colormap-notify)) make-colormap-event)
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((eq? type (event-type client-message)) make-client-message-event)
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((eq? type (event-type mapping-notify)) make-mapping-event)
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(else (error "message type not supported" type))))
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;;event-type-0 event-type-1 ;; those are not defined
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(define (next-event display)
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(let ((r (%next-event (display-Xdisplay display))))
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(complete-event (integer->event-type (car r)) (cdr r))))
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(import-lambda-definition %next-event (Xdisplay)
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"scx_Next_Event")
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(define (peek-event display)
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(let ((r (%peek-event (display-Xdisplay display))))
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(complete-event (integer->event-type (car r))
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(cdr r))))
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(import-lambda-definition %peek-event (Xdisplay)
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"scx_Peek_Event")
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(define (events-pending display)
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(%events-pending (display-Xdisplay display)))
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; (if (event-ready? display)
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; (%events-pending (display-Xdisplay display))
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; 0))
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(import-lambda-definition %events-pending (Xdisplay)
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"scx_Events_Pending")
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(define (get-motion-events window from-time to-time)
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(%get-motion-events (display-Xdisplay (window-display window))
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(window-Xwindow window)
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from-time to-time))
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(import-lambda-definition %get-motion-events (Xdisplay Xwindow from to)
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"scx_Get_Motion_Events")
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;;; Only here until scsh provides us with select
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(import-lambda-definition add-pending-channel (channel)
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"scx_add_pending_channel")
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