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;; (vg:inst-apply-scale
;; inst
;; (vg:drawing-apply-scale drawing lstxy)))
;; make a rectangle obj
;;
(define (vg:make-rect-obj x1 y1 x2 y2 #!key (line-color #f)(fill-color #f)(text #f)(font #f))
(make-vg:obj type: 'r pts: (list x1 y1 x2 y2) text: text font: font line-color: line-color fill-color: fill-color extents: #f))
;; make a rectangle obj
;;
(define (vg:make-line-obj x1 y1 x2 y2 #!key (line-color #f)(fill-color #f)(text #f)(font #f))
(make-vg:obj type: 'r pts: (list x1 y1 x2 y2) text: text font: font line-color: line-color extents: #f))
;; make a text obj
;;
(define (vg:make-text-obj x1 y1 text #!key (line-color #f)(fill-color #f)
(angle #f)(scale-with-zoom #f)(font #f)
(font-size #f))
(make-vg:obj type: 't pts: (list x1 y1) text: text
line-color: line-color fill-color: fill-color
angle: angle font: font
attributes: (vg:make-attrib 'font-size font-size)))
;; proc takes startnum and endnum and yields scalef, per-grad and unitname
;;
(define (vg:make-xaxis-obj x1 y1 x2 y2 #!key (line-color #f)(fill-color #f)(text #f)(font #f)(proc #f))
(make-vg:obj type: 'x pts: (list x1 y1 x2 y2) text: text font: font line-color: line-color fill-color: fill-color extents: #f proc: proc))
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;; (vg:inst-apply-scale
;; inst
;; (vg:drawing-apply-scale drawing lstxy)))
;; make a rectangle obj
;;
(define (vg:make-rect-obj x1 y1 x2 y2 #!key (line-color #f)(fill-color #f)(text #f)(font #f)(extents #f))
(make-vg:obj type: 'r pts: (list x1 y1 x2 y2) text: text font: font line-color: line-color fill-color: fill-color extents: extents))
;; make a rectangle obj
;;
(define (vg:make-line-obj x1 y1 x2 y2 #!key (line-color #f)(fill-color #f)(text #f)(font #f)(extents #f))
(make-vg:obj type: 'l pts: (list x1 y1 x2 y2) text: text font: font line-color: line-color extents: extents))
;; make a text obj
;;
(define (vg:make-text-obj x1 y1 text #!key (line-color #f)(fill-color #f)
(angle #f)(scale-with-zoom #f)(font #f)
(font-size #f))
(make-vg:obj type: 't pts: (list x1 y1) text: text
line-color: line-color fill-color: fill-color
angle: angle font: font extents: #f
attributes: (vg:make-attrib 'font-size font-size)))
;; proc takes startnum and endnum and yields scalef, per-grad and unitname
;;
(define (vg:make-xaxis-obj x1 y1 x2 y2 #!key (line-color #f)(fill-color #f)(text #f)(font #f)(proc #f))
(make-vg:obj type: 'x pts: (list x1 y1 x2 y2) text: text font: font line-color: line-color fill-color: fill-color extents: #f proc: proc))
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(let-values (((xmax ymax)(canvas-text-size cnv text)))
(set! text-xmax xmax)(set! text-ymax ymax)))
(if font-changed (canvas-font-set! cnv prev-font))))))
;; (print "text-xmax: " text-xmax " text-ymax: " text-ymax)
(if (vg:obj-extents obj)
(vg:obj-extents obj)
(if (not text)
pts
(if (and text-xmax text-ymax)
(let ((xt (list llx lly
(max ulx (+ llx text-xmax))
(max uly (+ lly text-ymax)))))
(vg:obj-extents-set! obj xt)
xt)
(if cnv
(if (eq? draw 'get-extents)
(let-values (((xmax ymax)(canvas-text-size cnv text)))
(let ((xt (list llx lly
(max ulx (+ llx xmax))
(max uly (+ lly ymax)))))
(vg:obj-extents-set! obj xt)
xt))
pts))))))) ;; return extents
;; given a rect obj draw it on the canvas applying first the drawing
;; scale and offset
;;
(define (vg:draw-line drawing obj #!key (draw #t))
(let* ((cnv (vg:drawing-cnv drawing))
(pts (vg:drawing-apply-scale drawing (vg:obj-pts obj)))
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(let-values (((xmax ymax)(canvas-text-size cnv text)))
(set! text-xmax xmax)(set! text-ymax ymax)))
(if font-changed (canvas-font-set! cnv prev-font))))))
;; (print "text-xmax: " text-xmax " text-ymax: " text-ymax)
(if (vg:obj-extents obj)
(vg:obj-extents obj)
(if (not text)
pts ;; no text
(if (and text-xmax text-ymax) ;; have text
(let ((xt (list llx lly
(max ulx (+ llx text-xmax))
(max uly (+ lly text-ymax)))))
(vg:obj-extents-set! obj xt)
xt)
(if cnv
(if (eq? draw 'get-extents)
(let-values (((xmax ymax)(canvas-text-size cnv text)))
(let ((xt (list llx lly
(max ulx (+ llx xmax))
(max uly (+ lly ymax)))))
(vg:obj-extents-set! obj xt)
xt))
pts)
pts)))))) ;; return extents
;; given a rect obj draw it on the canvas applying first the drawing
;; scale and offset
;;
(define (vg:draw-line drawing obj #!key (draw #t))
(let* ((cnv (vg:drawing-cnv drawing))
(pts (vg:drawing-apply-scale drawing (vg:obj-pts obj)))
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