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hmmm last patch didn't apply properly ...

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git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@1332 57a11ea4-9604-0410-9ed3-97b8803252fd
This commit is contained in:
Linas Vepstas 1998-10-21 03:56:50 +00:00
parent ea62dade5a
commit d1a8cb322f
1 changed files with 161 additions and 0 deletions
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161
src/scm/graph.scm
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(define (gnc:debug . items)
(if #t
(begin
(display "gnucash: [D] ")
(for-each (lambda (i) (display i)) items)
(newline))))
(define gnc:*pi* 3.14159265359)
(define (gnc:_pie-chart-slice_ color width height
center-x center-y
total
start-angle
label
value)
(let* ((pie-radius (/ width 3))
(full-circle (* 2 gnc:*pi*))
(arc-sweep (* (/ value total) full-circle)))
(gnc:debug
color width height center-x center-y total start-angle label value)
(savestate)
(filltype 1)
(colorname color)
(move 0 0)
(savestate)
(frotate (/ (* start-angle 180) gnc:*pi*))
(cont (inexact->exact pie-radius) 0)
(farc 0 0 pie-radius 0
(* pie-radius (cos arc-sweep))
(* pie-radius (sin arc-sweep)))
(cont 0 0)
(endpath)
(restorestate)
(fmove (/ (* 0.90 width) (* 2 (cos (+ start-angle (/ arc-sweep 2)))))
(/ (* 0.90 width) (* 2 (sin (+ start-angle (/ arc-sweep 2))))))
(alabel (char->integer #\c) (char->integer #\c) label)
(restorestate)
(gnc:debug "start: " start-angle " sweep: " arc-sweep "\n")
arc-sweep))
(define gnc:_next-wedge-color_
(let ((colors '("DarkGreen"
"FireBrick"
"DarkBlue"
"DarkOliveGreen"
"DarkOrange"
"MediumSeaGreen"
"peru"
"DarkOrchid"
"LimeGreen")))
(set-cdr! (last-pair colors) colors)
(lambda ()
(set! colors (cdr colors))
(car colors))))
(define (pie-plotutils chart-items)
;; ((label value) (label value) (label value))
(let ((total 0)
(current-angle 0)
(current-color 0))
;; get total
(for-each (lambda (item)
(gnc:debug (cadr item))
(set! total (+ total (cadr item))))
chart-items)
(for-each
(lambda (item)
(let ((width 400)
(height 400)
(center-x 200)
(center-y 200))
(set! current-angle
(+ current-angle
(gnc:_pie-chart-slice_
(gnc:_next-wedge-color_)
width height center-x center-y
total current-angle (car item) (cadr item))))))
chart-items)))
; static void
; pie_window_expose(GtkDrawingArea *da, GdkEventExpose *event, gpointer data) {
; //fprintf(stderr, "%p\n", data);
; //pie_chart(GTK_WIDGET(da), data);
; {
; int handle;
; GdkWindowPrivate *priv = (GdkWindowPrivate *)(GTK_WIDGET(da)->window);
; assert(parampl("XDRAWABLE_DISPLAY", priv->xdisplay) == 0);
; assert(parampl("XDRAWABLE_DRAWABLE1", &(priv->xwindow)) == 0);
; //assert(parampl("XDRAWABLE_DRAWABLE2", &(priv->xwindow)) == 0);
; assert(parampl("XDRAWABLE_DRAWABLE2", NULL) == 0);
; handle = newpl("Xdrawable", stdin, stdout, stderr);
; assert(handle);
; selectpl(handle);
; assert(openpl() == 0);
; space(-200, -200, 200, 200);
; colorname("grey83");
; box(-200, -200, 200, 200);
; pie_plotutils(pie_data);
; assert(closepl() == 0);
; selectpl(0);
; deletepl(handle);
; }
; }
(define (pie-window)
(let ((handle #f)
(result 0))
;; create a Postscript Plotter that writes to standard output
(set! handle (newpl "X"
(get_fileptr_stdin)
(get_fileptr_stdout)
(get_fileptr_stderr)))
(if (< handle 0)
(begin
(display "Couldn't create Plotter\n")
(set! result 1)))
(if (= result 0)
(begin
(selectpl handle) ; select the Plotter for use
(if (< (openpl) 0) ; open Plotter
(begin
(display "Couldn't open Plotter\n")
(set! result 1)))))
(space -200 -200 200 200)
(colorname "grey83")
(box -200 -200 200 200)
(pie-plotutils '(("horses" 121.32)
("throbbing expanse" 350.19)
("tangibles" 23.32)
("intangibles" 45.44)
("giant fungi" 241.87)))
(if (< (closepl) 0) ; close Plotter
(display "Couldn't close Plotter\n")
(set! result 1))
(selectpl 0) ; select default Plotter
(if (< (deletepl handle) 0) ; delete Plotter we used
(display "Couldn't delete Plotter\n")
(set! result 1))))