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omgwidgets.lisp
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omgwidgets.lisp
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(defpackage :omgwidgets
(:use cl omg jscl omgui omgutil)
(:export omg-widget root render-widget redraw
editable-field input-size value ok cancel val
modal-dialog-window
progress-bar width height bg-style fg-style set-progress
list-view elements current-position transfer-chunk list-view-element-class
graph xmin xmax ymin ymax adjust xticks yticks xdelta ydelta xcaption ycaption show-scales plots need-rescale add-plot
remove-plot remove-all-plots preserve-aspect-ratio rescale rescale-auto make-curve
plot color parent
func-plot func
tabular-plot table
matrix-plot nx ny palette matrix norm))
(in-package :omgwidgets)
(defclass-f omg-widget ()
((root :accessor root)
(id :initform (omgui::random-id)
:accessor id)))
(defclass-f editable-field (omg-widget)
((root :initform (create-element "span"
:|style.textDecorationStyle| "dashed"
:|style.textDecorationLine| "underline"
:|style.textDecorationThicknes| "1.75pt"
:|style.color| "blue"
:|title| "change"
:add-style ":hover {cursor:pointer;}"))
(input-size :initarg :input-size
:initform 20
:accessor input-size)
(value :initarg :value
:initform ""
:accessor val)
(ok :initarg :ok
:initform (lambda (val)
(declare (ignore val))
(setf (slot-value w 'value) val)
val)
:reader ok-callback)
(cancel :initarg :cancel
:initform (lambda (w) (declare (ignore w)))
:reader cancel-callback)
(edt-blk :accessor edt-blk
:initform nil)))
(defclass-f modal-dialog-window (omg-widget)
((mdw-curtain :accessor mdw-curtain)))
(defclass-f progress-bar (omg-widget)
((width :accessor width
:initarg :width
:initform "20em")
(height :accessor height
:initarg :height
:initform "1em")
(bg-style :accessor bg-style
:initarg :bg-style
:initform '(:|style.border| "1px solid black"
:|style.background| "white"))
(fg-style :accessor fg-style
:initarg :fg-style
:initform '(:|style.background| "blue"))
(value :accessor value
:initarg :value
:initform 0)
(bar :accessor bar)))
(defclass-m list-view (omg-widget data-sync)
((elements :accessor elements
:initform nil)
(current-position :accessor current-position
:initform 150
:mirrored t)
(transfer-chunk :initform 50
:accessor transfer-chunk
:browser-side t)
(mean-height :browser-side t
:initform nil
:accessor mean-height)
(f-elements :accessor f-elements
:initform nil
:browser-side t)
(list-view-element-class :browser-side t
:initform 'list-view-element
:accessor list-view-element-class)
(root :initform (create-element "div")
:accessor root)))
(defclass-f list-view-element (omg-widget)
((loaded :initform nil
:accessor loaded
:initarg :loaded)
(pos :initform (error "Position must be defined!")
:accessor pos
:initarg :pos)))
(defclass-f graph (omg-widget)
((xmin :initarg :xmin
:initform -1
:accessor xmin)
(xmax :initarg :xmax
:initform 1
:accessor xmax)
(ymin :initarg :ymin
:initform -1
:accessor ymin)
(ymax :initarg :ymax
:initform 1
:accessor ymax)
(adjust :initarg :adjust
:initform t
:accessor adjust)
(xticks :initarg :xticks
:initform 5
:accessor xticks)
(yticks :initarg :yticks
:initform 5
:accessor yticks)
(xdelta :initarg :xdelta)
(ydelta :initarg :ydelta)
(xcaption :initarg :xcaption
:initform nil
:accessor xcaption)
(ycaption :initarg :ycaption
:initform nil
:accessor ycaption)
(show-scales :initarg :scales
:initform '(:bottom :left)
:accessor show-scales)
(graph :accessor graph)
(plots :initform (list)
:accessor plots)
(preserve-aspect-ratio :initform nil
:initarg :preserve-aspect-ratio
:accessor preserve-aspect-ratio)
(need-rescale :initform nil
:accessor need-rescale)))
(defclass-f graph-scale (omg-widget)
((root :initform nil)
(parent :initarg :graph
:initform (error "Parent graph must be supplied!")
:accessor parent)
(pos :initarg :position
:accessor pos
:initform (error "Scale position must be provided!"))))
(defclass-f plot (omg-widget)
((root :initform nil)
(color :initform "red"
:initarg :color
:accessor color)
(parent :accessor parent)))
(defclass-f func-plot (plot)
((func :initarg :func
:initform (error "Function must be provided for func-plot!")
:accessor func)
(last-ymin :initform nil
:accessor last-ymin)
(last-ymax :initform nil
:accessor last-ymax)))
(defclass-f tabular-plot (plot)
((table :initarg :table
:initform (error "Table must be provided for tabular-plot!")
:accessor table)))
(defclass-f matrix-plot (plot)
((nx)
(ny)
(xmin :accessor xmin
:initarg :xmin
:initform (error "matrix-plot bounds must bi defined!"))
(xmax :accessor xmax
:initarg :xmax
:initform (error "matrix-plot bounds must bi defined!"))
(ymin :accessor ymin
:initarg :ymin
:initform (error "matrix-plot bounds must bi defined!"))
(ymax :accessor ymax
:initarg :ymax
:initform (error "matrix-plot bounds must bi defined!"))
(palette :initarg :palette
:initform (lambda (x) (list x x x))
:accessor palette)
(matrix :initarg :matrix
:initform (error "Matrix must be provided for matrix-plot!")
:accessor matrix)
(norm :initarg :norm
:initform nil
:accessor norm)))
;;;;;;;;;;;;;;;;; render-widget ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defgeneric-f render-widget (w))
(defmethod-f render-widget ((w omg-widget))
(root w))
(defmethod-f render-widget ((w editable-field))
(setf (jscl::oget (root w) "onclick")
(lambda (ev)
(declare (ignore ev))
(to-edit-state w)))
(setf (jscl::oget (root w) "innerHTML") (val w))
(root w))
(defmethod-f render-widget ((w modal-dialog-window))
(append-element (setf (slot-value w 'mdw-curtain)
(create-element "div" :|style.opacity| "80%"
:|style.background| "white"
:|style.width| (page-width)
:|style.height| (page-height)
:|style.position| "absolute"
:|style.top| "0"
:|style.left| "0"
:|style.zIndex| 100000)))
(setf (slot-value w 'root)
(create-element "div" :|style.visibility| "hidden"
:|style.width| "auto"
:|style.display| "inline-block"
:|style.position| "absolute"
:|style.zIndex| 200000))
(ensure-element (root w)
(setf (jscl::oget (root w) "style" "left")
(format nil "~Apx"
(max 0 (+ (visible-left)
(jsfloor (/ (- (visible-width)
(element-width (root w)))
2))))))
(setf (jscl::oget (root w) "style" "top")
(format nil "~Apx"
(max 0 (+ (visible-top)
(jsfloor (/ (- (visible-height)
(element-height (root w)))
2))))
"px"))
(setf (jscl::oget (root w) "style" "visibility") "visible"))
(root w))
(defmethod-f render-widget ((b progress-bar))
(setf (slot-value b 'root)
(apply #'create-element
`("div" ,@(bg-style b) :|style.width| ,(width b) :|style.height| ,(height b)
:|style.position| "relative"
:append-element
,(make-svg :|viewBox| "0 0 100 100"
:|style.width| "100%"
:|style.height| "100%"
:|style.left| "0"
:|style.top| "0"
:|style.display| "block"
:|style.position| "absolute"
:|preserveAspectRatio| "none"
'(:|defs| (:|linearGradient| :|id| "boxgrad"
:|x1| "0"
:|x2| "1"
(:|stop| :|offset| "0%" :|stop-color| "white")
(:|stop| :|offset| "50%" :|stop-color| "#e0e0e0")
(:|stop| :|offset| "100%" :|stop-color| "white")
(:|animate| :|attributeName| "x1"
:|values| "-1;1"
:|dur| "1s"
:|repeatCount| "indefinite")
(:|animate| :|attributeName| "x2"
:|values| "0;2"
:|dur| "1s"
:|repeatCount| "indefinite")))
'(:|rect| :|x| 0 :|y| 0 :|width| "100%" :|height| "100%" :|fill| "url('#boxgrad')"))
:append-element
,(setf (slot-value b 'bar)
(apply #'create-element
`("div" ,@(fg-style b)
:|style.height| "100%"
:|style.position| "absolute"
:|style.left| 0
:|style.top| 0
:|style.width| ,(format nil "~A%" (jsfloor (* 100 (value b))))))))))
(root b))
(defmethod-f render-widget ((e list-view-element))
(setf (slot-value e 'root)
(if (loaded e)
(render-widget (loaded e))
(create-element "div" :|style.position| "relative"
:|style.left| 0
:|style.right| 0
:|style.height| "1em"
:|style.marginTop| "0.2em"
:|style.background| "#f0f0f0"))))
(defmethod-f render-widget ((l list-view))
(let ((el (create-element "div" :append-elements (mapcar #'render-widget (slot-value l 'f-elements)))))
(ensure-element el
(onscroll l (f-elements l) (current-position l))
(let ((scroll-tim nil))
(setf (jscl::oget (parent-element el) "onscroll")
(lambda (ev)
(if scroll-tim (funcall (jscl::%js-vref "clearTimeout") scroll-tim))
(setf scroll-tim (execute-after 0.1 (lambda () (onscroll l)))))))
(let ((cur-el (nth (current-position l) (f-elements l))))
(if cur-el
(setf (jscl::oget (parent-element el) "scrollTop")
(- (jscl::oget (slot-value cur-el 'root) "offsetTop")
(jscl::oget ((jscl::oget (parent-element el) "getBoundingClientRect")) "top"))))))
(setf (slot-value l 'root) el)))
(defmethod-f render-widget ((g graph))
(setf (slot-value g 'graph)
(apply #'create-element
`("div" :|style.width| "100%"
,@(if (not (preserve-aspect-ratio g))
(list :|style.height| "100%")
(list :|style.aspectRatio| (/ (- (xmax g) (xmin g)) (- (ymax g) (ymin g)))))
:|style.position| "relative"
:|style.left| 0
:|style.top| 0
:|style.overflow| "hidden"
:|style.boxSizing| "border-box")))
(let* ((scales (show-scales g))
(top-scale (position :top scales))
(bottom-scale (position :bottom scales))
(left-scale (position :left scales))
(right-scale (position :right scales))
(xcap (xcaption g))
(ycap (ycaption g)))
(setf (slot-value g 'root)
(apply #'create-element
`("table" :|style.width| "100%"
:|style.height| ,(if (preserve-aspect-ratio g) "fit-content" "100%")
:|style.borderSpacing| 0
:|style.padding| "1em"
:append-elements
,(if top-scale
(list (create-element "tr" :|style.height| "1px"
:append-elements (if ycap (list (create-element "td")))
:append-elements (if left-scale (list (create-element "td" :|style.height| "inherit"
:|style.width| "inherit")))
:append-element
(create-element "td" :|style.height| "inherit"
:|style.width| "inherit"
:|style.padding| 0
:|style.position| "relative"
; :|style.height| "max-content"
:append-element (render-widget (make-instance 'graph-scale :graph g :position :top)))
:append-elements (if right-scale (list (create-element "td"))))))
:append-element
,(create-element "tr" :|style.height| "1px"
:append-elements
(if ycap
(list (create-element "td" :|style.paddingRight| "1em"
:|style.height| "inherit"
:append-element (create-element "span" :|style.writingMode| "vertical-lr"
:|style.writingMode| "sideways-lr"
:append-element ycap))))
:append-elements
(if left-scale
(list (create-element "td" :|style.padding| 0
:|style.position| "relative"
:|style.height| "inherit"
:|style.width| "inherit"
:append-element (render-widget (make-instance 'graph-scale :graph g :position :left)))))
:append-element
(create-element "td" :|style.padding| 0
:|style.borderSpacing| 0
:|style.width| "100%"
:|style.height| "100%"
:append-element
(create-element "div" :|style.width| "100%"
:|style.height| "100%"
:|style.position| "relative"
:|style.boxSizing| "border-box"
:|style.background| "white"
:|style.boxShadow| "black 0px 0px 0px 1px"
:append-element (graph g)))
:append-elements
(if right-scale
(list (create-element "td" :|style.padding| 0
:|style.position| "relative"
:|style.height| "inherit"
:|style.width| "inherit"
:append-element (render-widget (make-instance 'graph-scale :graph g :position :right))))))
:append-elements
,(if bottom-scale
(list (create-element "tr" :|style.height| "1px"
:append-elements (if ycap (list (create-element "td")))
:append-elements (if left-scale (list (create-element "td")))
:append-element
(create-element "td" :|style.height| "inherit"
:|style.width| "inherit"
:|style.padding| 0
:|style.position| "relative"
; :|style.height| "max-content"
:append-element (render-widget (make-instance 'graph-scale :graph g :position :bottom)))
:append-elements (if right-scale (list (create-element "td"))))))
:append-elements
,(if xcap
(list (create-element "tr" :|style.height| "1px"
:append-elements (if ycap (list (create-element "td")))
:append-elements (if left-scale (list (create-element "td")))
:append-element (create-element "td" :|align| "center"
:|style.height| "inherit"
:|style.width| "inherit"
:|style.padding| 0
:append-element xcap)
:append-elements (if right-scale (list (create-element "td"))))))))))
(ensure-element (graph g)
(loop for p in (plots g) do
(if (not (and (root p) (jscl::oget (root p) "isConnected")))
(append-element (render-widget p) (graph g)))))
(rescale-auto g)
(root g))
(defmethod-f render-widget ((s graph-scale))
(setf (slot-value s 'root)
(labels ((trnk (x delta)
(let* ((dg (floor (/ (jsln delta) (jsln 10))))
(digits (if (< dg 1)
(+ (if (< dg 0)
(- dg)
dg)
1)
0)))
(/ (jstrunc (* (expt 10 digits) x))
(expt 10 digits)))))
(let* ((g (parent s))
(adjust (adjust g))
(pos (pos s))
(horizontal (or (equal :top pos)
(equal :bottom pos)))
(min (if horizontal (xmin g) (ymin g)))
(max (if horizontal (xmax g) (ymax g)))
(delta (if horizontal (xdelta g) (ydelta g)))
(ft (if adjust
(* delta (jsceil (/ min delta)))
min)))
(create-element "div" :|style.position| "relative"
;;:|style.inset| 0
(if horizontal :|style.width| :|style.height|) "100%"
; :|style.background| "green"
:|style.display| "flex"
:|style.flexFlow| (if horizontal "row" "column")
:append-elements
(let* ((ticks (funcall (if horizontal #'identity #'reverse)
(loop for x100 from (* 100 ft) to (* 100 max) by (* 100 delta)
for x = (/ x100 100) collect (cons x (if horizontal
(/ (- x min) (- max min))
(- 1 (/ (- x min) (- max min))))))))
(tick-pos (mapcar #'cdr ticks))
(tick-val (mapcar #'car ticks)))
(mapcar (lambda (x1 x2 v)
(create-element "div" (if horizontal :|style.width| :|style.height|) (format nil "~A%" (* 100 (- x2 x1)))
(if horizontal :|style.height| :|style.width|) "100%"
:|style.overflow| "visible"
:|style.position| "relative"
:append-element (create-element "div" (if horizontal :|style.width| :|style.height|) "0px"
(if horizontal :|style.height| :|style.width|) "0.5em"
:|style.position| "absolute"
(if horizontal :|style.right| :|style.bottom|) "-0.5px"
(if horizontal :|style.borderRight| :|style.borderBottom|) "1px solid black"
(case pos
(:left :|style.right|)
(:right :|style.left|)
(:top :|style.bottom|)
(:bottom :|style.top|)) 0)
:append-element (create-element "div" :|innerHTML| (format nil "~A" (trnk v delta))
(if horizontal :|style.width| :|style.height|) "max-content"
(if horizontal :|style.left| :|style.top|) "100%"
:|style.translate| (format nil "~A ~A"
(if horizontal
(if (< v 0)
"calc(-50% - 0.2em)"
"-50%")
"0")
(if horizontal "0" "-50%"))
:|style.position| "relative"
(case pos
(:left :|style.paddingRight|)
(:right :|style.paddingLeft|)
(:top :|style.paddingBottom|)
(:bottom :|style.paddingTop|)) (if horizontal "0.5em" "0.6em")
:|style.textAlign| (case pos
(:left "right")
(:right "left")
(:top "bottom")
(:bottom "top")))))
(cons 0 tick-pos)
tick-pos
tick-val)))))))
(defmethod-f render-widget ((p plot))
(setf (slot-value p 'root)
(let* ((g (parent p))
(xmin (xmin g))
(xmax (xmax g))
(ymin (ymin g))
(ymax (ymax g)))
(make-svg :|viewBox| (format nil "~A ~A ~A ~A" xmin ymin (- xmax xmin) (- ymax ymin))
:|style.width| "100%"
:|style.height| "100%"
:|style.left| "0"
:|style.top| "0"
:|style.display| "block"
:|style.position| "absolute"
:|preserveAspectRatio| "none"
(make-curve p)))))
;;;;;;;;;;;;;;;; redraw ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defgeneric-f redraw (omg-widget))
(defmethod-f redraw ((w omg-widget))
(if (slot-boundp w 'root)
(let* ((old-root (root w))
(new-root (render-widget w))
(parent (parent-element old-root)))
(if (and old-root
(jscl::oget old-root "isConnected")
(not (eql old-root new-root)))
(progn
((jscl::oget parent "insertBefore") new-root old-root)
(remove-element old-root)))
new-root)))
;;;;;;;;;;;;;; editable-field ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defmethod-f to-edit-state ((w editable-field))
(let ((ok-button (create-element "button" :|innerHTML| "update"
:|style.marginLeft| "1em"))
(cancel-button (create-element "button" :|innerHTML| "cancel"
:|style.marginLeft| "1em"))
(edit-fld (create-element "input" :|type| "text"
:|value| (val w)
:|size| (input-size w))))
(setf (jscl::oget ok-button "onclick")
(lambda (ev)
(let ((res (funcall (ok-callback w) (jscl::oget edit-fld "value"))))
(if res
(progn
(setf (slot-value w 'value) res)
(to-show-state w))))))
(setf (jscl::oget cancel-button "onclick")
(lambda (ev)
(to-show-state w)
(if (cancel-callback w) (funcall (cancel-callback w) w))))
(setf (slot-value w 'edt-blk)
(create-element "span" :|style.display| "inline-block"
:append-elements `(,edit-fld ,cancel-button ,ok-button)))
(setf (jscl::oget (root w) "style" "display") "none")
((jscl::oget (parent-element (root w)) "insertBefore") (edt-blk w) (root w))
((jscl::oget edit-fld "focus"))))
(defmethod-f to-show-state ((w editable-field))
(setf (jscl::oget (root w) "innerHTML" ) (val w))
(setf (jscl::oget (root w) "style" "display") "inline-block")
(if (edt-blk w) (remove-element (edt-blk w))))
;;;;;;;;;;;;;; modal-dialog-window ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defmethod-f close ((w modal-dialog-window))
(remove-element (mdw-curtain w))
(remove-element (root w)))
;;;;;;;;;;;;;; progress-bar ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defmethod-f set-progress ((b progress-bar) val)
(setf (slot-value b 'value) (min 1 (max 0 val)))
(setf (jscl::oget (bar b) "style" "width") (format nil "~A%" (* 100 (value b)))))0
;;;;;;;;;;;;;; list-view ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defmethod-f initialize-instance :after ((l list-view) &key &rest args)
(sync-data l))
(defmethod-r elements-length ((l list-view))
(length (elements l)))
(defmethod-r get-elements ((l list-view) from to)
(subseq (elements l) from to))
(defmethod-r get-element ((l list-view) num)
(nth num (elements l)))
(defmethod-f sync-data :after ((l list-view))
(setf (slot-value l 'f-elements)
(let* ((cs (transfer-chunk l))
(ps (current-position l))
(start (max 0 (- ps cs)))
(el (elements-length l))
(end (min (- el 1) (+ ps cs cs)))
(iitms (get-elements l start (+ end 1)))
(ec (list-view-element-class l)))
(append (loop for i from 0 below start collect
(make-instance ec :pos i))
(loop for i from start below (+ end 1) collect
(make-instance ec :pos i :loaded (nth (- i start) iitms)))
(loop for i from (+ end 1) below el collect
(make-instance ec :pos i)))))
(redraw l))
(defmethod-f onscroll ((l list-view) &optional (cdl (f-elements l)) first-passed)
(if cdl
(let* ((eh (jscl::oget (root (car cdl)) "clientHeight"))
(tc (transfer-chunk l))
(scroll-top (jscl::oget (parent-element (root l)) "scrollTop"))
(ofs (- scroll-top (* 3 tc eh)))
(bot (+ ofs (jscl::oget (parent-element (root l)) "clientHeight") (* 3 tc eh)))
(bnd (jscl::oget ((jscl::oget (parent-element (root l)) "getBoundingClientRect")) "top"))
(stk nil)
(rem nil)
(first-el nil))
(loop for el on cdl do
(let* ((e (car el))
(r (root e))
(rtop (- (jscl::oget r "offsetTop") bnd)))
(setf rem el)
(if (and (> rtop (- scroll-top bnd)) (not first-el))
(setf first-el (pos e)))
(if (> rtop bot)
(loop-finish)
(if (and (>= rtop ofs)
(not (loaded e)))
(progn
(push e stk)
(if (>= (length stk) (transfer-chunk l))
(loop-finish)))))))
(if (and (not first-passed) first-el)
(setf (slot-value l 'current-position) first-el))
(if stk
(map nil
(lambda (e i)
(setf (slot-value e 'loaded) i)
(redraw e))
(reverse stk)
(get-elements l (pos (car (last stk))) (+ 1 (pos (car stk))))))
(if (and stk rem) (execute-after 0.01 (lambda () (onscroll l rem first-el)))))))
(defmethod-f sync-slot :after ((l list-view) slot)
(if (equal slot 'elements)
(redraw l)))
;;;;;;;;;;;;;; list-view ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defgeneric make-curve (p))
(defmethod-f make-curve ((p plot))
(error "Please subclass plot and define the make-curve method!"))
(defmethod-f make-curve ((p tabular-plot))
(let* ((g (parent p))
(ymin (ymin g))
(ymax (ymax g))
(tbl (table p)))
`(path :|stroke| ,(color p)
:|stroke-width| "1px"
:|vector-effect| "non-scaling-stroke"
:|fill| "none"
:|d| ,(apply #'jscl::concat
(cons (format nil "M~A,~A " (caar tbl) (+ ymin (- ymax (cdar tbl))))
(loop for i in (cdr tbl) collect
(format nil "L~A,~A " (car i) (+ ymin (- ymax (cdr i))))))))))
(defmethod-f make-curve ((p func-plot))
(let* ((g (parent p))
(xmin (xmin g))
(xmax (xmax g))
(ymin (ymin g))
(ymax (ymax g))
(grf (graph g))
(wi (jscl::oget grf "clientWidth"))
(he (jscl::oget grf "clientWidth")))
(setf (slot-value p 'last-ymin)
(setf (slot-value p 'last-ymax)
(funcall (func p) xmin)))
`(path :|stroke| ,(color p)
:|stroke-width| "1px"
:|vector-effect| "non-scaling-stroke"
:|fill| "none"
:|d| ,(apply #'jscl::concat
(cons (format nil "M~A,~A " xmin (+ ymin (- ymax (funcall (func p) xmin))))
(loop for i from 1 to wi collect
(let* ((x (+ xmin (* (- xmax xmin) (/ i wi))))
(f (funcall (func p) x)))
(setf (slot-value p 'last-ymin) (jsmin f (last-ymin p)))
(setf (slot-value p 'last-ymax) (jsmax f (last-ymax p)))
(format nil "L~A,~A " x (+ ymin (- ymax f))))))))))
(defmethod-f make-curve ((p matrix-plot))
(let* ((g (parent p))
(ymin (ymin g))
(ymax (ymax g))
(canv (create-element "canvas" :|width| (nx p)
:|height| (ny p)))
(ctx ((jscl::oget canv "getContext") "2d"))
(idat ((jscl::oget ctx "getImageData") 0 0 (nx p) (ny p)))
(dat (jscl::oget idat "data"))
(mt (matrix p))
(nx (nx p))
(ny (ny p))
(min-cf (if (norm p)
(loop for i below (* nx ny) minimize (aref mt i))
0.0))
(max-cf (if (norm p)
(loop for i below (* nx ny) maximize (aref mt i))
1.0))
(delta-cf (if (and (norm p) (< min-cf max-cf))
(/ 1.0 (- max-cf min-cf))
1.0)))
(loop for i below nx do
(loop for j below ny do
(let* ((adr (+ i (* nx j)))
(colors (funcall (palette p)
(* delta-cf (- (aref mt adr) min-cf))))
(idx (* 4 adr)))
(setf (aref dat (+ idx 3)) 255)
(loop for o below 3 do
(setf (aref dat (+ idx o))
(* 255 (- 1.0 (nth o colors))))))))
((jscl::oget ctx "putImageData") idat 0 0)
`(image :|width| ,(- (xmax p) (xmin p))
:|height| ,(- (ymax p) (ymin p))
:|x| ,(xmin p)
:|y| ,(- (+ (ymax g) (ymin g)) (ymax p))
:|preserveAspectRatio| "none"
:|style.imageRendering| "pixelated"
; :|transform| ,(format nil "translate(~A ~A)" (xmin p) (ymin p))
:|href| ,((jscl::oget canv "toDataURL") "image/bmp"))))
(defgeneric xmin (p))
(defgeneric xmax (p))
(defgeneric ymin (p))
(defgeneric ymax (p))
(defmethod-f xmin ((p plot))
(xmin (parent p)))
(defmethod-f xmax ((p plot))
(xmax (parent p)))
(defmethod-f ymin ((p plot))
(ymin (parent p)))
(defmethod-f ymax ((p plot))
(ymax (parent p)))
(defmethod-f xmin ((p tabular-plot))
(apply #'min (mapcar #'car (table p))))
(defmethod-f xmax ((p tabular-plot))
(apply #'max (mapcar #'car (table p))))
(defmethod-f ymin ((p tabular-plot))
(apply #'min (mapcar #'cdr (table p))))
(defmethod-f ymax ((p tabular-plot))
(apply #'max (mapcar #'cdr (table p))))
(defmethod-f ymin ((p func-plot))
(if (last-ymin p)
(last-ymin p)
(ymin (parent p))))
(defmethod-f ymax ((p func-plot))
(if (last-ymax p)
(last-ymax p)
(ymax (parent p))))
(defmethod-f nx ((p matrix-plot))
(car (array-dimensions (matrix p))))
(defmethod-f ny ((p matrix-plot))
(cadr (array-dimensions (matrix p))))
(defmethod-f add-plot ((g graph) (p plot) &key rescale)
(if (position p (plots g))
(remove-element (root p)))
(setf (slot-value p 'parent) g)
(pushnew p (slot-value g 'plots))
(if rescale
(setf (slot-value g 'need-rescale) t))
(if (slot-boundp g 'graph)
(ensure-element (graph g)
(if (not (jscl::oget (root p) "isConnected"))
(append-element (render-widget p) (graph g)))
(rescale-auto g))))
(defmethod-f remove-plot ((p plot))
(setf (slot-value (parent p) 'plots)
(loop for pl in (plots (parent p)) when (not (eql p pl)) collect pl))
(if (and (root p) (jscl::oget (root p) "isConnected"))
(remove-element (root p))))
(defmethod-f remove-all-plots ((g graph))
(map nil
(lambda (p)
(if (and (root p) (jscl::oget (root p) "isConnected"))
(remove-element (root p))))
(plots g))
(setf (slot-value g 'plots) (list))
(redraw g))
(defmethod-f rescale ((g graph) &key xmin xmax ymin ymax xdelta ydelta)
(macrolet ((upd (&rest vl)
`(progn
,@(mapcar
(lambda (v)
`(if ,v (setf (slot-value g ',v) ,v)))
vl))))
(upd xmin xmax ymin ymax xdelta ydelta)
(redraw g)))
(defmethod-f rescale-auto ((g graph))
(if (need-rescale g)
(let* ((plots (plots g))
(xmin (apply #'min (mapcar #'xmin plots)))
(xmax (apply #'max (mapcar #'xmax plots)))
(ymin (apply #'min (mapcar #'ymin plots)))
(ymax (apply #'max (mapcar #'ymax plots)))
(xadd (* 0.01 (- ymax ymin)))
(yadd (* 0.01 (- ymax ymin))))
(setf (slot-value g 'need-rescale) nil)
(if (and (> xadd 0) (> yadd 0))
(rescale g :xmin (- xmin xadd)
:xmax (+ xmax xadd)
:ymin (- ymin yadd)
:ymax (+ ymax yadd))))))
(defun-f guess-delta (dx nt)
(let* ((delta (/ dx nt))
(dgl (jsfloor (/ (jsln delta) (jsln 10))))
(d1 (expt 10 dgl)))
(cond ((< (/ dx d1) (1+ nt)) d1)
((< (/ dx (* 2 d1)) (1+ nt)) (* 2 d1))
((< (/ dx (* 2.5 d1)) (1+ nt)) (* 2.5 d1))
((< (/ dx (* 5 d1)) (1+ nt)) (* 5 d1))
(t (* 10 d1)))))
(defmethod-f xdelta ((g graph))
(if (slot-boundp g 'xdelta)
(slot-value g 'xdelta)
(guess-delta (- (xmax g) (xmin g)) (xticks g))))
(defmethod-f ydelta ((g graph))
(if (slot-boundp g 'ydelta)
(slot-value g 'ydelta)
(guess-delta (- (ymax g) (ymin g)) (yticks g))))