71 lines
2.5 KiB
D
71 lines
2.5 KiB
D
;; stripchart.d
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;;
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;; $Id$
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;;
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;; Copyright 1990, 1991, 1992, 1993, 1994, 1995, Oliver Laumann, Berlin
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;; Copyright 2002, 2003 Sam Hocevar <sam@hocevar.net>, Paris
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;;
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;; This software was derived from Elk 1.2, which was Copyright 1987, 1988,
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;; 1989, Nixdorf Computer AG and TELES GmbH, Berlin (Elk 1.2 has been written
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;; by Oliver Laumann for TELES Telematic Services, Berlin, in a joint project
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;; between TELES and Nixdorf Microprocessor Engineering, Berlin).
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;;
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;; Oliver Laumann, TELES GmbH, Nixdorf Computer AG and Sam Hocevar, as co-
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;; owners or individual owners of copyright in this software, grant to any
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;; person or company a worldwide, royalty free, license to
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;;
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;; i) copy this software,
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;; ii) prepare derivative works based on this software,
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;; iii) distribute copies of this software or derivative works,
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;; iv) perform this software, or
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;; v) display this software,
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;;
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;; provided that this notice is not removed and that neither Oliver Laumann
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;; nor Teles nor Nixdorf are deemed to have made any representations as to
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;; the suitability of this software for any purpose nor are held responsible
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;; for any defects of this software.
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;;
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;; THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
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(define-widget-type 'stripchart "StripChart.h")
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(prolog
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"static void Get_Value (Widget w, XtPointer client_data, XtPointer value) {
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Object ret;
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ret = Funcall (Get_Function ((int)client_data), Null, 0);
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switch (TYPE(ret)) {
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case T_Fixnum: *(double *)value = (double)FIXNUM(ret); break;
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case T_Flonum: *(double *)value = FLONUM(ret)->val; break;
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case T_Bignum: *(double *)value = Bignum_To_Double (ret); break;
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default: Primitive_Error (\"stripchart sampler must return number\");
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}
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}")
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(define-widget-class 'stripchart 'stripChartWidgetClass)
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(define-primitive 'stripchart-set-sampler '(w p)
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" int i;
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Arg a[1];
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XtCallbackList c;
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Check_Widget_Class (w, stripChartWidgetClass);
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Check_Procedure (p);
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XtSetArg (a[0], XtNgetValue, &c);
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XtGetValues (WIDGET(w)->widget, a, 1);
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if (c[0].callback)
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Primitive_Error (\"stripchart already has a sampler\");
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i = Register_Function (p);
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XtAddCallback (WIDGET(w)->widget, XtNgetValue, Get_Value, (XtPointer)i);
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return Make_Id ('s', (XtPointer)WIDGET(w)->widget, i);")
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(define-primitive 'stripchart-remove-sampler '(i)
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" Widget w;
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w = (Widget)Use_Id (i, 's');
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XtRemoveCallback (w, XtNgetValue, Get_Value,
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(XtPointer)IDENTIFIER(i)->num);
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Deregister_Function (IDENTIFIER(i)->num);
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return Void;")
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