Added libXaw

1 files changed, 579 insertions, 0 deletions

diff --git a/libXaw/src/StripChart.c b/libXaw/src/StripChart.c
new file mode 100644
index 000000000..ada85f172
--- /dev/null
+++ b/libXaw/src/StripChart.c
@@ -0,0 +1,579 @@
+/* $Xorg: StripChart.c,v 1.4 2001/02/09 02:03:46 xorgcvs Exp $ */
+
+/***********************************************************
+
+Copyright 1987, 1988, 1994, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in 
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+/* $XFree86: xc/lib/Xaw/StripChart.c,v 1.7 2001/01/17 19:42:32 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <X11/IntrinsicP.h>
+#include <X11/StringDefs.h>
+#include <X11/Xfuncs.h>
+#include <X11/Xaw/StripCharP.h>
+#include <X11/Xaw/XawInit.h>
+#include "Private.h"
+
+#define MS_PER_SEC 1000
+
+/*
+ * Class Methods
+ */
+static void XawStripChartInitialize(Widget, Widget, ArgList, Cardinal*);
+static void XawStripChartDestroy(Widget);
+static void XawStripChartRedisplay(Widget, XEvent*, Region);
+static void XawStripChartResize(Widget);
+static Boolean XawStripChartSetValues(Widget, Widget, Widget,
+				      ArgList, Cardinal*);
+
+/*
+ * Prototypes
+ */
+static void CreateGC(StripChartWidget, unsigned int);
+static void DestroyGC(StripChartWidget, unsigned int);
+static void draw_it(XtPointer, XtIntervalId*);
+static void MoveChart(StripChartWidget, Bool);
+static int repaint_window(StripChartWidget, int, int);
+
+/*
+ * Initialization
+ */
+#define offset(field)	XtOffsetOf(StripChartRec, field)
+static XtResource resources[] = {
+  {
+    XtNwidth,
+    XtCWidth,
+    XtRDimension,
+    sizeof(Dimension),
+    offset(core.width),
+    XtRImmediate,
+    (XtPointer)
+    120
+  },
+  {
+    XtNheight,
+    XtCHeight,
+    XtRDimension,
+    sizeof(Dimension),
+    offset(core.height),
+    XtRImmediate,
+    (XtPointer)120
+  },
+  {
+    XtNupdate,
+    XtCInterval,
+    XtRInt,
+    sizeof(int),
+    offset(strip_chart.update),
+    XtRImmediate,
+    (XtPointer)10
+  },
+  {
+    XtNminScale,
+    XtCScale,
+    XtRInt,
+    sizeof(int),
+    offset(strip_chart.min_scale),
+    XtRImmediate,
+    (XtPointer)1
+  },
+  {
+    XtNforeground,
+    XtCForeground,
+    XtRPixel,
+    sizeof(Pixel),
+    offset(strip_chart.fgpixel),
+    XtRString,
+    XtDefaultForeground
+  },
+  {
+    XtNhighlight,
+    XtCForeground,
+    XtRPixel,
+    sizeof(Pixel),
+    offset(strip_chart.hipixel),
+    XtRString,
+    XtDefaultForeground
+  },
+  {
+    XtNgetValue,
+    XtCCallback,
+    XtRCallback,
+    sizeof(XtPointer),
+    offset(strip_chart.get_value),
+    XtRImmediate,
+    NULL
+  },
+  {
+    XtNjumpScroll,
+    XtCJumpScroll,
+    XtRInt,
+    sizeof(int),
+    offset(strip_chart.jump_val),
+    XtRImmediate,
+    (XtPointer)DEFAULT_JUMP
+  },
+};
+#undef offset
+
+StripChartClassRec stripChartClassRec = {
+  /* core */
+  {
+    (WidgetClass)&simpleClassRec,	/* superclass */
+    "StripChart",			/* class_name */
+    sizeof(StripChartRec),		/* widget_size */
+    XawInitializeWidgetSet,		/* class_initialize */
+    NULL,				/* class_part_initialize */
+    False,				/* class_inited */
+    XawStripChartInitialize,		/* initialize */
+    NULL,				/* initialize_hook */
+    XtInheritRealize,			/* realize */
+    NULL,				/* actions */
+    0,					/* num_actions */
+    resources,				/* resources */
+    XtNumber(resources),		/* num_resources */
+    NULLQUARK,				/* xrm_class */
+    True,				/* compress_motion */
+    XtExposeCompressMultiple		/* compress_exposure */
+    | XtExposeGraphicsExposeMerged,
+    True,				/* compress_enterleave */
+    False,				/* visible_interest */
+    XawStripChartDestroy,		/* destroy */
+    XawStripChartResize,		/* resize */
+    XawStripChartRedisplay,		/* expose */
+    XawStripChartSetValues,		/* set_values */
+    NULL,				/* set_values_hook */
+    NULL,				/* set_values_almost */
+    NULL,				/* get_values_hook */
+    NULL,				/* accept_focus */
+    XtVersion,				/* version */
+    NULL,				/* callback_private */
+    NULL,				/* tm_table */
+    XtInheritQueryGeometry,		/* query_geometry */
+    XtInheritDisplayAccelerator,	/* display_accelerator */
+    NULL,				/* extension */
+  },
+  /* simple */
+  {
+    XtInheritChangeSensitive,		/* change_sensitive */
+  }
+};
+
+WidgetClass stripChartWidgetClass = (WidgetClass)&stripChartClassRec;
+
+/*
+ * Implementation
+ */
+/*
+ * Function:
+ *	CreateGC
+ *
+ * Parameters:
+ *	w     - strip chart widget
+ *	which - GC's to create
+ *
+ * Description:
+ *	Creates the GC's
+ */
+static void
+CreateGC(StripChartWidget w, unsigned int which)
+{
+    XGCValues myXGCV;
+
+    if (which & FOREGROUND) {
+	myXGCV.foreground = w->strip_chart.fgpixel;
+	w->strip_chart.fgGC = XtGetGC((Widget)w, GCForeground, &myXGCV);
+    }
+
+    if (which & HIGHLIGHT) {
+	myXGCV.foreground = w->strip_chart.hipixel;
+	w->strip_chart.hiGC = XtGetGC((Widget)w, GCForeground, &myXGCV);
+    }
+}
+
+/*
+ * Function:
+ *	DestroyGC
+ *
+ * Arguments:
+ *	w     - strip chart widget
+ *	which - which GC's to destroy
+ *
+ * Description:
+ *	Destroys the GC's
+ */
+static void
+DestroyGC(StripChartWidget w, unsigned int which)
+{
+    if (which & FOREGROUND) 
+	XtReleaseGC((Widget)w, w->strip_chart.fgGC);
+
+    if (which & HIGHLIGHT) 
+	XtReleaseGC((Widget)w, w->strip_chart.hiGC);
+}
+
+/*ARGSUSED*/
+static void
+XawStripChartInitialize(Widget greq, Widget gnew,
+			ArgList args, Cardinal *num_args)
+{
+    StripChartWidget w = (StripChartWidget)gnew;
+
+    if (w->strip_chart.update > 0)
+    w->strip_chart.interval_id =
+    XtAppAddTimeOut(XtWidgetToApplicationContext(gnew),
+		    w->strip_chart.update * MS_PER_SEC, 
+		    draw_it, (XtPointer)gnew);
+    CreateGC(w, ALL_GCS);
+
+    w->strip_chart.scale = w->strip_chart.min_scale;
+    w->strip_chart.interval = 0;
+    w->strip_chart.max_value = 0.0;
+    w->strip_chart.points = NULL;
+    XawStripChartResize(gnew);
+}
+ 
+static void
+XawStripChartDestroy(Widget gw)
+{
+    StripChartWidget w = (StripChartWidget)gw;
+
+    if (w->strip_chart.update > 0)
+	XtRemoveTimeOut(w->strip_chart.interval_id);
+    if (w->strip_chart.points)
+	XtFree((char *)w->strip_chart.points);
+    DestroyGC(w, ALL_GCS);
+}
+
+/*
+ * NOTE: This function really needs to recieve graphics exposure 
+ *       events, but since this is not easily supported until R4 I am
+ *       going to hold off until then.
+ */
+/*ARGSUSED*/
+static void
+XawStripChartRedisplay(Widget w, XEvent *event, Region region)
+{
+    if (event->type == GraphicsExpose)
+	(void)repaint_window((StripChartWidget)w, event->xgraphicsexpose.x,
+			     event->xgraphicsexpose.width);
+    else
+	(void)repaint_window((StripChartWidget)w, event->xexpose.x,
+			     event->xexpose.width);
+}
+
+/*ARGSUSED*/
+static void 
+draw_it(XtPointer client_data, XtIntervalId *id)
+{
+    StripChartWidget w = (StripChartWidget)client_data;
+    double value;
+   
+    if (w->strip_chart.update > 0)
+	w->strip_chart.interval_id =
+	    XtAppAddTimeOut(XtWidgetToApplicationContext((Widget)w),
+			    w->strip_chart.update * MS_PER_SEC,draw_it,
+			    client_data);
+
+    if (w->strip_chart.interval >= XtWidth(w))
+	MoveChart((StripChartWidget)w, True);
+
+    /* Get the value, stash the point and draw corresponding line */
+    if (w->strip_chart.get_value == NULL)
+	return;
+
+    XtCallCallbacks((Widget)w, XtNgetValue, (XtPointer)&value);
+
+    /* 
+     * Keep w->strip_chart.max_value up to date, and if this data 
+     * point is off the graph, change the scale to make it fit
+     */
+    if (value > w->strip_chart.max_value) {
+	w->strip_chart.max_value = value;
+	if (XtIsRealized((Widget)w) &&
+	    w->strip_chart.max_value > w->strip_chart.scale) {
+	    XClearWindow(XtDisplay(w), XtWindow(w));
+	    w->strip_chart.interval = repaint_window(w, 0, XtWidth(w));
+	}
+    }
+
+    w->strip_chart.valuedata[w->strip_chart.interval] = value;
+    if (XtIsRealized((Widget)w)) {
+	int y = (int)(XtHeight(w) - XtHeight(w) * value
+		     / w->strip_chart.scale);
+
+	XFillRectangle(XtDisplay(w), XtWindow(w), w->strip_chart.fgGC,
+		       w->strip_chart.interval, y, 
+		       1, XtHeight(w) - y);
+
+	/*
+	 * Fill in the graph lines we just painted over
+	 */
+	if (w->strip_chart.points != NULL) {
+	    w->strip_chart.points[0].x = w->strip_chart.interval;
+	    XDrawPoints(XtDisplay(w), XtWindow(w), w->strip_chart.hiGC,
+			w->strip_chart.points, w->strip_chart.scale - 1,
+			CoordModePrevious);
+	}
+
+	XFlush(XtDisplay(w));		    /* Flush output buffers */
+    }
+    w->strip_chart.interval++;		    /* Next point */
+}
+
+/* Blts data according to current size, then redraws the stripChart window
+ * Next represents the number of valid points in data.  Returns the (possibly)
+ * adjusted value of next.  If next is 0, this routine draws an empty window
+ * (scale - 1 lines for graph).  If next is less than the current window width,
+ * the returned value is identical to the initial value of next and data is
+ * unchanged.  Otherwise keeps half a window's worth of data.  If data is
+ * changed, then w->strip_chart.max_value is updated to reflect the
+ * largest data point
+ */
+static int 
+repaint_window(StripChartWidget w, int left, int width)
+{
+    int i, j;
+    int next = w->strip_chart.interval;
+    int scale = w->strip_chart.scale;
+    int scalewidth = 0;
+
+    /* Compute the minimum scale required to graph the data, but don't go
+       lower than min_scale */
+    if (w->strip_chart.interval != 0 || scale <= w->strip_chart.max_value)
+	scale = w->strip_chart.max_value + 1;
+	if (scale < w->strip_chart.min_scale)
+	    scale = w->strip_chart.min_scale;
+
+    if (scale != w->strip_chart.scale) {
+	w->strip_chart.scale = scale;
+	left = 0;
+	width = next;
+	scalewidth = XtWidth(w);
+
+	XawStripChartResize((Widget)w);
+
+	if (XtIsRealized((Widget)w))
+	    XClearWindow(XtDisplay(w), XtWindow(w));
+    }
+
+    if (XtIsRealized((Widget)w)) {
+	Display *dpy = XtDisplay(w);
+	Window win = XtWindow(w);
+
+	width += left - 1;
+	if (!scalewidth)
+	    scalewidth = width;
+
+	if (next < ++width)
+	    width = next;
+
+	/* Draw data point lines */
+	for (i = left; i < width; i++) {
+	    int y = XtHeight(w) - (XtHeight(w) * w->strip_chart.valuedata[i])
+				   / w->strip_chart.scale;
+
+	    XFillRectangle(dpy, win, w->strip_chart.fgGC, 
+			   i, y, 1, XtHeight(w) - y);
+	}
+
+	/* Draw graph reference lines */
+	for (i = 1; i < w->strip_chart.scale; i++) {
+	    j = i * ((int)XtHeight(w) / w->strip_chart.scale);
+	    XDrawLine(dpy, win, w->strip_chart.hiGC, left, j, scalewidth, j);
+	}
+    }
+    return (next);
+}
+
+/*
+ * Function:
+ *	MoveChart
+ *
+ * Parameters:
+ *	w - chart widget
+ *	blit - blit the bits?
+ *
+ * Description:
+ *	Moves the chart over when it would run off the end.
+ */
+static void
+MoveChart(StripChartWidget w, Bool blit)
+{
+    double old_max;
+    int left, i, j;
+    int next = w->strip_chart.interval;
+
+    if (!XtIsRealized((Widget)w))
+	return;
+
+    if (w->strip_chart.jump_val < 0)
+	w->strip_chart.jump_val = DEFAULT_JUMP;
+    if (w->strip_chart.jump_val == DEFAULT_JUMP)
+	j = XtWidth(w) >> 1;
+    else {
+	j = (int)XtWidth(w) - w->strip_chart.jump_val;
+	if (j < 0)
+	    j = 0;
+    }
+
+    (void)memmove((char *)w->strip_chart.valuedata,
+		  (char *)(w->strip_chart.valuedata + next - j),
+		  j * sizeof(double));
+    next = w->strip_chart.interval = j;
+	
+    /*
+     * Since we just lost some data, recompute the 
+     * w->strip_chart.max_value
+     */
+    old_max = w->strip_chart.max_value;
+    w->strip_chart.max_value = 0.0;
+    for (i = 0; i < next; i++) {
+	if (w->strip_chart.valuedata[i] > w->strip_chart.max_value) 
+	    w->strip_chart.max_value = w->strip_chart.valuedata[i];
+    }
+
+    if (!blit)
+	return;
+
+    if (old_max != w->strip_chart.max_value) {
+	XClearWindow(XtDisplay(w), XtWindow(w));
+	repaint_window(w, 0, XtWidth(w));
+	return;
+    }
+
+    XCopyArea(XtDisplay((Widget)w), XtWindow((Widget)w), XtWindow((Widget)w),
+	      w->strip_chart.hiGC, (int)XtWidth(w) - j, 0, j, XtHeight(w), 0, 0);
+
+    XClearArea(XtDisplay((Widget)w), XtWindow((Widget)w), 
+	       j, 0, XtWidth(w) - j, XtHeight(w), False);
+
+    /* Draw graph reference lines */
+    left = j;
+    for (i = 1; i < w->strip_chart.scale; i++) {
+	j = i * (XtHeight(w) / w->strip_chart.scale);
+	XDrawLine(XtDisplay((Widget)w), XtWindow((Widget)w),
+		  w->strip_chart.hiGC, left, j, XtWidth(w), j);
+    }
+}
+
+/*ARGSUSED*/
+static Boolean
+XawStripChartSetValues(Widget current, Widget request, Widget cnew,
+		       ArgList args, Cardinal *num_args)
+{
+    StripChartWidget old = (StripChartWidget)current;
+    StripChartWidget w = (StripChartWidget)cnew;
+    Bool ret_val = False;
+    unsigned int new_gc = NO_GCS;
+
+    if (w->strip_chart.update != old->strip_chart.update) {
+	if (old->strip_chart.update > 0)
+	    XtRemoveTimeOut(old->strip_chart.interval_id);
+	if (w->strip_chart.update > 0)
+	    w->strip_chart.interval_id =
+		XtAppAddTimeOut(XtWidgetToApplicationContext(cnew),
+				w->strip_chart.update * MS_PER_SEC,
+				draw_it, (XtPointer)w);
+    }
+
+    if (w->strip_chart.min_scale > w->strip_chart.max_value + 1)
+	ret_val = True;
+     
+    if (w->strip_chart.fgpixel != old->strip_chart.fgpixel) {
+	new_gc |= FOREGROUND;
+	ret_val = True;
+    }
+    
+    if (w->strip_chart.hipixel != old->strip_chart.hipixel) {
+	new_gc |= HIGHLIGHT;
+	ret_val = True;
+    }
+    
+    DestroyGC(old, new_gc);
+    CreateGC(w, new_gc);
+
+    return (ret_val);
+}
+
+/*
+ * Function:
+ *	XawStripChartResize
+ *
+ * Parameters:
+ *	w - StripChart widget
+ *
+ * Description:
+ *	Sets up the polypoint that will be used to draw in the graph lines.
+ */
+static void
+XawStripChartResize(Widget widget)
+{
+    StripChartWidget w = (StripChartWidget)widget;
+    XPoint *points;
+    Cardinal size;
+    int i;
+
+    if (w->strip_chart.scale <= 1) {
+	XtFree((char *)w->strip_chart.points);
+	w->strip_chart.points = NULL;
+	return;
+    }
+    
+    size = sizeof(XPoint) * (w->strip_chart.scale - 1);
+
+    points = (XPoint *)XtRealloc((XtPointer)w->strip_chart.points, size);
+    w->strip_chart.points = points;
+
+    /* Draw graph reference lines into clip mask */
+
+    for (i = 1; i < w->strip_chart.scale; i++) {
+	points[i - 1].x = 0;
+	points[i - 1].y = XtHeight(w) / w->strip_chart.scale;
+    }
+}