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;;;
;;; Japi is a cross-platform, easy to use (rough and ready) Java based GUI library
;;; Download a library and headers for your platform, and get the C examples
;;; and documentation from:
;;;
;;; http://www.japi.de/
;;;
;;; This file shows how to use some of the available functions. You may assume
;;; that the only functions tested so far in the binding are those which appear
;;; below, as this file doubles as the test program. The binding is so simple
;;; however that so far no binding (APART FROM J_PRINT) has gone wrong of those
;;; tested so far!
;;;
;;;
;;; HOW TO USE THIS FILE
;;;
;;; (compile-file "c:/cvs/gcl/japitest.lsp") (load "c:/cvs/gcl/japitest.o")
;;;
;;; Requires either "java" or "jre" in the path to work.
;;;
(in-package :japi-primitives)
;; Start up the Japi server (needs to find either "java" or "jre" in your path
(defmacro with-server ((app-name debug-level) . body)
(multiple-value-bind (ds b)
(si::find-declarations body)
`(if (= 0 (jpr::j_start))
(format t (format nil "~S can't connect to the Japi GUI server." ,app-name))
(progn
(j_setdebug ,debug-level)
,@ds
(unwind-protect
(progn ,@b)
(j_quit))))))
;; Use a frame and clean up afterwards even if trouble ensues
(defmacro with-frame ((frame-var-name title) . body)
(multiple-value-bind (ds b)
(si::find-declarations body)
`(let ((,frame-var-name (j_frame ,title)))
,@ds
(unwind-protect
(progn ,@b)
(j_dispose ,frame-var-name)))))
;; Use a canvas and clean up afterwards even if trouble ensues
(defmacro with-canvas ((canvas-var-name frame-obj x-size y-size) . body)
(multiple-value-bind (ds b)
(si::find-declarations body)
`(let ((,canvas-var-name (j_canvas ,frame-obj ,x-size ,y-size)))
,@ds
(unwind-protect
(progn ,@b)
(j_dispose ,canvas-var-name)))))
;; Use a text area and clean up afterwards even if trouble ensues
(defmacro with-text-area ((text-area-var-name panel-obj x-size y-size) . body)
(multiple-value-bind (ds b)
(si::find-declarations body)
`(let ((,text-area-var-name (j_textarea ,panel-obj ,x-size ,y-size)))
,@ds
(unwind-protect
(progn ,@b)
(j_dispose ,text-area-var-name)))))
;; Use a pulldown menu bar and clean up afterwards even if trouble ensues
(defmacro with-menu-bar ((bar-var-name frame-obj) . body)
(multiple-value-bind (ds b)
(si::find-declarations body)
`(let ((,bar-var-name (j_menubar ,frame-obj)))
,@ds
(unwind-protect
(progn ,@b)
(j_dispose ,bar-var-name)))))
;; Add a pulldown menu and clean up afterwards even if trouble ensues
(defmacro with-menu ((menu-var-name bar-obj title) . body)
(multiple-value-bind (ds b)
(si::find-declarations body)
`(let ((,menu-var-name (j_menu ,bar-obj ,title)))
,@ds
(unwind-protect
(progn ,@b)
(j_dispose ,menu-var-name)))))
;; Add a pulldown menu item and clean up afterwards even if trouble ensues
(defmacro with-menu-item ((item-var-name menu-obj title) . body)
(multiple-value-bind (ds b)
(si::find-declarations body)
`(let ((,item-var-name (j_menuitem ,menu-obj ,title)))
,@ds
(unwind-protect
(progn ,@b)
(j_dispose ,item-var-name)))))
;; Add a mouse listener and clean up afterwards even if trouble ensues
(defmacro with-mouse-listener ((var-name obj type) . body)
(multiple-value-bind (ds b)
(si::find-declarations body)
`(let ((,var-name (j_mouselistener ,obj ,type)))
,@ds
(unwind-protect
(progn ,@b)
(j_dispose ,var-name)))))
;; Use a panel and clean up afterwards even if trouble ensues
(defmacro with-panel ((panel-var-name frame-obj) . body)
(multiple-value-bind (ds b)
(si::find-declarations body)
`(let ((,panel-var-name (j_panel ,frame-obj)))
,@ds
(unwind-protect
(progn ,@b)
(j_dispose ,panel-var-name)))))
;; Run a five second frame in a Japi server
(with-server ("GCL Japi library test GUI 1" 0)
(with-frame (frame "Five Second Blank Test Frame")
(j_show frame)
(j_sleep 5000)))
;; Get a pointer to an array of ints
(defCfun "static void* inta_ptr(object s)" 0
" return(s->fixa.fixa_self);")
(defentry inta-ptr (object) (int "inta_ptr"))
;; Draw function
(defun drawgraphics (drawable xmin ymin xmax ymax)
(let* ((fntsize 10)
(tmpstrx (format nil "XMax = ~D" xmax))
(tmpstry (format nil "YMax = ~D" ymax))
(tmpstrwidx (j_getstringwidth drawable tmpstrx)))
(j_setfontsize drawable fntsize)
(j_setnamedcolor drawable J_RED)
(j_drawline drawable xmin ymin (- xmax 1) (- ymax 1))
(j_drawline drawable xmin (- ymax 1) (- xmax 1) ymin)
(j_drawrect drawable xmin ymin (- xmax xmin 1) (- ymax xmin 1))
(j_setnamedcolor drawable J_BLACK)
(j_drawline drawable xmin (- ymax 30) (- xmax 1) (- ymax 30))
(j_drawstring drawable (- (/ xmax 2) (/ tmpstrwidx 2)) (- ymax 40) tmpstrx)
(j_drawline drawable (+ xmin 30) ymin (+ xmin 30) (- ymax 1))
(j_drawstring drawable (+ xmin 50) 40 tmpstry)
(j_setnamedcolor drawable J_MAGENTA)
(loop for i from 1 to 10
do (j_drawoval drawable
(+ xmin (/ (- xmax xmin) 2))
(+ ymin (/ (- ymax ymin) 2))
(* (/ (- xmax xmin) 20) i)
(* (/ (- ymax ymin) 20) i)))
(j_setnamedcolor drawable J_BLUE)
(let ((y ymin)
(teststr "JAPI Test Text"))
(loop for i from 5 to 21 do
(j_setfontsize drawable i)
(let ((x (- xmax (j_getstringwidth drawable teststr))))
(setf y (+ y (j_getfontheight drawable)))
(j_drawstring drawable x y teststr))))))
;; Run some more extensive tests
(with-server
("GCL Japi library test GUI 2" 0)
(with-frame
(frame "Draw")
(j_show frame)
(let ((alert (j_messagebox frame "Two second alert box" "label")))
(j_sleep 2000)
(j_dispose alert))
(let ((result1 (j_alertbox frame "label1" "label2" "OK"))
(result2 (j_choicebox2 frame "label1" "label2" "Yes" "No"))
(result3 (j_choicebox3 frame "label1" "label2" "Yes" "No" "Cancel")))
(format t "Requestor results were: ~D, ~D, ~D~%" result1 result2 result3))
(j_setborderlayout frame)
(with-menu-bar
(menubar frame)
(with-menu
(file menubar "File")
(with-menu-item
(print file "Print")
(with-menu-item
(save file "Save BMP")
(with-menu-item
(quit file "Quit")
(with-canvas
(canvas frame 400 600)
(j_pack frame)
(drawgraphics canvas 0 0 (j_getwidth canvas) (j_getheight canvas))
(j_show frame)
(do ((obj (j_nextaction) (j_nextaction)))
((or (= obj frame) (= obj quit)) t)
(when (= obj canvas)
(j_setnamedcolorbg canvas J_WHITE)
(drawgraphics canvas 10 10
(- (j_getwidth canvas) 10)
(- (j_getheight canvas) 10)))
(when (= obj print)
(let ((printer (j_printer frame)))
(when (> 0 printer)
(drawgraphics printer 40 40
(- (j_getwidth printer) 80)
(- (j_getheight printer) 80))
(j_print printer))))
(when (= obj save)
(let ((image (j_image 600 800)))
(drawgraphics image 0 0 600 800)
(when (= 0 (j_saveimage image "test.bmp" J_BMP))
(j_alertbox frame "Problems" "Can't save the image" "OK")))))))))))))
;; Try some mouse handling
(with-server
("GCL Japi library test GUI 3" 0)
(with-frame
(frame "Move and drag the mouse")
(j_setsize frame 430 240)
(j_setnamedcolorbg frame J_LIGHT_GRAY)
(with-canvas
(canvas1 frame 200 200)
(with-canvas
(canvas2 frame 200 200)
(j_setpos canvas1 10 30)
(j_setpos canvas2 220 30)
(with-mouse-listener
(pressed canvas1 J_PRESSED)
(with-mouse-listener
(dragged canvas1 J_DRAGGED)
(with-mouse-listener
(released canvas1 J_RELEASED)
(with-mouse-listener
(entered canvas2 J_ENTERERD)
(with-mouse-listener
(moved canvas2 J_MOVED)
(with-mouse-listener
(exited canvas2 J_EXITED)
(j_show frame)
;; Allocate immovable storage for passing data back from C land.
;; Uses the GCL only make-array keyword :static
(let* ((xa (make-array 1 :initial-element 0 :element-type 'fixnum :static t))
(ya (make-array 1 :initial-element 0 :element-type 'fixnum :static t))
(pxa (inta-ptr xa))
(pya (inta-ptr ya))
(x 0)
(y 0)
(get-mouse-xy (lambda (obj)
(progn (j_getmousepos obj pxa pya)
(setf x (aref xa 0))
(setf y (aref ya 0)))))
(startx 0)
(starty 0))
(do ((obj (j_nextaction) (j_nextaction)))
((= obj frame) t)
(when (= obj pressed)
(funcall get-mouse-xy pressed)
(setf startx x)
(setf starty y))
(when (= obj dragged)
(funcall get-mouse-xy dragged)
(j_drawrect canvas1 startx starty (- x startx) (- y starty)))
(when (= obj released)
(funcall get-mouse-xy released)
(j_drawrect canvas1 startx starty (- x startx) (- y starty)))
(when (= obj entered)
(funcall get-mouse-xy entered)
(setf startx x)
(setf starty y))
(when (= obj moved)
(funcall get-mouse-xy moved)
(j_drawline canvas2 startx starty x y))
(setf startx x)
(setf starty y)
(when (= obj exited)
(funcall get-mouse-xy exited)
(j_drawline canvas2 startx starty x y))))))))))))))
;; Text editor demo
(with-server
("GCL Japi library test text editor" 0)
(with-frame
(frame "A simple editor")
(j_setgridlayout frame 1 1)
(with-panel
(panel frame)
(j_setgridlayout panel 1 1)
(with-menu-bar
(menubar frame)
(with-menu
(file-mi menubar "File")
(with-menu-item
(new-mi file-mi "New")
(with-menu-item
(save-mi file-mi "Save")
(j_seperator file-mi)
(with-menu-item
(quit-mi file-mi "Quit")
(with-menu
(edit-mi menubar "Edit")
(with-menu-item
(select-all-mi edit-mi "Select All")
(j_seperator edit-mi)
(with-menu-item
(cut-mi edit-mi "Cut")
(with-menu-item
(copy-mi edit-mi "Copy")
(with-menu-item
(paste-mi edit-mi "Paste")
(with-text-area
(text panel 15 4)
(j_setfont text J_DIALOGIN J_BOLD 18)
(let ((new-text (format nil "JAPI (Java Application~%Programming Interface)~%a platform and language~%independent API")))
(j_settext text new-text)
(j_show frame)
(j_pack frame)
(j_setrows text 4)
(j_setcolumns text 15)
(j_pack frame)
;; Allocate immovable storage for passing data back from C land.
;; Uses the GCL only make-array keyword :static
(let* ((xa (make-array 1 :initial-element 0 :element-type 'fixnum :static t))
(ya (make-array 1 :initial-element 0 :element-type 'fixnum :static t))
(pxa (inta-ptr xa))
(pya (inta-ptr ya))
(x 0)
(y 0)
(get-mouse-xy (lambda (obj)
(progn (j_getmousepos obj pxa pya)
(setf x (aref xa 0))
(setf y (aref ya 0)))))
(startx 0)
(starty 0)
(selstart 0)
(selend 0)
(text-buffer (make-array 64000 :initial-element 0 :element-type 'character :static t))
; (text-buffer (make-string 64000 :initial-element #\0))
(p-text-buffer (inta-ptr text-buffer)))
(do ((obj (j_nextaction) (j_nextaction)))
((or (= obj frame) (= obj quit-mi))t)
(when (= obj panel)
(format t "Size changed to ~D rows ~D columns~%" (j_getrows text) (j_getcolumns text))
(format t "Size changed to ~D x ~D pixels~%" (j_getwidth text) (j_getheight text)))
(when (= obj text) (format t "Text changed (len=~D)~%" (j_getlength text) ))
(when (= obj new-mi) (j_settext new-text))
(when (= obj save-mi) (j_gettext text text-buffer))
(when (= obj select-all-mi) (j_selectall text))
(when (or (= obj cut-mi)
(= obj copy-mi)
(= obj paste-mi))
(setf selstart (1- (j_getselstart text)))
(setf selend (1- (j_getselend text))))
(when (= obj cut-mi)
(j_getseltext text p-text-buffer)
(j_delete text (1- (j_getselstart text)) (1- (j_getselend text)))
(setf selend selstart))
(when (= obj copy-mi)
(j_getseltext text p-text-buffer))
(when (= obj paste-mi)
(if (= selstart selend)
(j_inserttext text p-text-buffer (1- (j_getcurpos text)))
(j_replacetext text p-text-buffer (1- (j_getselstart text)) (1- (j_getselend text))))
))))))))))))))))))
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