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xmem/MemStripChart.c

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/***********************************************************************
*
* MemStripChart Widget
* from StripChart Widget derived
*
* Author: Hans-Helmut B"uhmann 20. Jan. 1996
*
***********************************************************************/
#include <stdio.h>
#include <X11/IntrinsicP.h>
#include <X11/StringDefs.h>
#include <X11/Xaw/XawInit.h>
#include "MemStripCharP.h"
#include <X11/Xfuncs.h>
#define MS_PER_SEC 1000
/* Private Data */
#define offset(field) XtOffsetOf(MemStripChartRec, 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(mem_strip_chart.update), XtRImmediate, (XtPointer) 10},
{XtNminScale, XtCScale, XtRInt, sizeof(int),
offset(mem_strip_chart.min_scale), XtRImmediate, (XtPointer) 1},
{XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel),
offset(mem_strip_chart.fgpixel), XtRString, XtDefaultForeground},
{XtNhighlight, XtCForeground, XtRPixel, sizeof(Pixel),
offset(mem_strip_chart.hipixel), XtRString, XtDefaultForeground},
{XtNcodecolor, XtCForeground, XtRPixel, sizeof(Pixel),
offset(mem_strip_chart.codepixel), XtRString, XtDefaultForeground},
{XtNcachedcolor, XtCForeground, XtRPixel, sizeof(Pixel),
offset(mem_strip_chart.cachedpixel), XtRString, XtDefaultBackground},
{XtNbuffercolor, XtCForeground, XtRPixel, sizeof(Pixel),
offset(mem_strip_chart.bufferpixel), XtRString, XtDefaultForeground},
{XtNfreecolor, XtCForeground, XtRPixel, sizeof(Pixel),
offset(mem_strip_chart.freepixel), XtRString, XtDefaultBackground},
{XtNswapcolor, XtCForeground, XtRPixel, sizeof(Pixel),
offset(mem_strip_chart.swappixel), XtRString, XtDefaultForeground},
{XtNgetValue, XtCCallback, XtRCallback, sizeof(XtPointer),
offset(mem_strip_chart.get_value), XtRImmediate, (XtPointer) NULL},
{XtNjumpScroll, XtCJumpScroll, XtRInt, sizeof(int),
offset(mem_strip_chart.jump_val), XtRImmediate, (XtPointer) DEFAULT_JUMP},
};
#undef offset
static void Initialize(), Destroy(), Redisplay(), MoveChart(MemStripChartWidget w, Boolean blit), SetPoints();
static Boolean SetValues();
static int repaint_window();
MemStripChartClassRec memStripChartClassRec = {
{ /* core fields */
/* superclass */ (WidgetClass) &simpleClassRec,
/* class_name */ "MemStripChart",
/* size */ sizeof(MemStripChartRec),
/* class_initialize */ XawInitializeWidgetSet,
/* class_part_initialize */ NULL,
/* class_inited */ FALSE,
/* initialize */ Initialize,
/* initialize_hook */ NULL,
/* realize */ XtInheritRealize,
/* actions */ NULL,
/* num_actions */ 0,
/* resources */ resources,
/* num_resources */ XtNumber(resources),
/* xrm_class */ NULLQUARK,
/* compress_motion */ TRUE,
/* compress_exposure */ XtExposeCompressMultiple |
XtExposeGraphicsExposeMerged,
/* compress_enterleave */ TRUE,
/* visible_interest */ FALSE,
/* destroy */ Destroy,
/* resize */ SetPoints,
/* expose */ Redisplay,
/* set_values */ SetValues,
/* set_values_hook */ NULL,
/* set_values_almost */ NULL,
/* get_values_hook */ NULL,
/* accept_focus */ NULL,
/* version */ XtVersion,
/* callback_private */ NULL,
/* tm_table */ NULL,
/* query_geometry */ XtInheritQueryGeometry,
/* display_accelerator */ XtInheritDisplayAccelerator,
/* extension */ NULL
},
{ /* Simple class fields */
/* change_sensitive */ XtInheritChangeSensitive
}
};
WidgetClass memStripChartWidgetClass = (WidgetClass) &memStripChartClassRec;
/****************************************************************
*
* Private Procedures
*
****************************************************************/
static void draw_it();
/* Function Name: CreateGC
* Description: Creates the GC's
* Arguments: w - the mem strip chart widget.
* which - which GC's to create.
* Returns: none
*/
static void
CreateGC(MemStripChartWidget w, unsigned int which)
{
XGCValues myXGCV;
if (which & FOREGROUND) {
myXGCV.foreground = w->mem_strip_chart.fgpixel;
w->mem_strip_chart.fgGC = XtGetGC((Widget) w, GCForeground, &myXGCV);
}
if (which & HIGHLIGHT) {
myXGCV.foreground = w->mem_strip_chart.hipixel;
w->mem_strip_chart.hiGC = XtGetGC((Widget) w, GCForeground, &myXGCV);
}
if (which & CODE) {
myXGCV.foreground = w->mem_strip_chart.codepixel;
w->mem_strip_chart.codeGC = XtGetGC((Widget) w, GCForeground, &myXGCV);
}
if (which & SHARED) {
myXGCV.foreground = w->mem_strip_chart.cachedpixel;
w->mem_strip_chart.cachedGC = XtGetGC((Widget) w, GCForeground, &myXGCV);
}
if (which & BUFFER) {
myXGCV.foreground = w->mem_strip_chart.bufferpixel;
w->mem_strip_chart.bufferGC = XtGetGC((Widget) w, GCForeground, &myXGCV);
}
if (which & FREE) {
myXGCV.foreground = w->mem_strip_chart.freepixel;
w->mem_strip_chart.freeGC = XtGetGC((Widget) w, GCForeground, &myXGCV);
}
if (which & SWAP) {
myXGCV.foreground = w->mem_strip_chart.swappixel;
w->mem_strip_chart.swapGC = XtGetGC((Widget) w, GCForeground, &myXGCV);
}
}
/* Function Name: DestroyGC
* Description: Destroys the GC's
* Arguments: w - the mem strip chart widget.
* which - which GC's to destroy.
* Returns: none
*/
static void
DestroyGC(MemStripChartWidget w, unsigned int which)
{
if (which & FOREGROUND)
XtReleaseGC((Widget) w, w->mem_strip_chart.fgGC);
if (which & HIGHLIGHT)
XtReleaseGC((Widget) w, w->mem_strip_chart.hiGC);
if (which & CODE) {
XtReleaseGC((Widget) w, w->mem_strip_chart.codeGC);
}
if (which & SHARED) {
XtReleaseGC((Widget) w, w->mem_strip_chart.cachedGC);
}
if (which & BUFFER) {
XtReleaseGC((Widget) w, w->mem_strip_chart.bufferGC);
}
if (which & FREE) {
XtReleaseGC((Widget) w, w->mem_strip_chart.freeGC);
}
if (which & SWAP) {
XtReleaseGC((Widget) w, w->mem_strip_chart.swapGC);
}
}
/* Function Name: DrawMemStrip
* Description: Draw a mem strip
* Arguments: w - the mem strip chart widget.
* x - the x-position.
* Returns: none
*/
static void
DrawMemStrip(MemStripChartWidget w, unsigned int x)
{
int top, bottom;
bottom = w->core.height;
if (w->mem_strip_chart.valuedata[x].code != 0.0) {
top = (int) (w->core.height
- (int)(w->core.height * w->mem_strip_chart.valuedata[x].code)
/ w->mem_strip_chart.scale);
XFillRectangle(XtDisplay(w), XtWindow(w), w->mem_strip_chart.codeGC,
x, top, (unsigned int) 1, bottom - top);
bottom = top;
}
if (w->mem_strip_chart.valuedata[x].cached != 0.0) {
top = (int) (w->core.height
- (int)(w->core.height * (w->mem_strip_chart.valuedata[x].code
+ w->mem_strip_chart.valuedata[x].cached))
/ w->mem_strip_chart.scale);
XFillRectangle(XtDisplay(w), XtWindow(w), w->mem_strip_chart.cachedGC,
x, top, (unsigned int) 1, bottom - top);
bottom = top;
}
if (w->mem_strip_chart.valuedata[x].buffer != 0.0) {
top = (int) (w->core.height
- (int)(w->core.height * (1.0 - w->mem_strip_chart.valuedata[x].free))
/ w->mem_strip_chart.scale);
XFillRectangle(XtDisplay(w), XtWindow(w), w->mem_strip_chart.bufferGC,
x, top, (unsigned int) 1, bottom - top);
bottom = top;
}
if (w->mem_strip_chart.valuedata[x].free != 0.0) {
top = (int) (w->core.height
- (int)(w->core.height)
/ w->mem_strip_chart.scale);
XFillRectangle(XtDisplay(w), XtWindow(w), w->mem_strip_chart.freeGC,
x, top, (unsigned int) 1, bottom - top);
bottom = top;
}
if (w->mem_strip_chart.valuedata[x].swap != 0.0) {
top = (int) (w->core.height
- (int)(w->core.height * (1.0 + w->mem_strip_chart.valuedata[x].swap))
/ w->mem_strip_chart.scale);
XFillRectangle(XtDisplay(w), XtWindow(w), w->mem_strip_chart.swapGC,
x, top, (unsigned int) 1, bottom - top);
}
}
/* ARGSUSED */
static void Initialize (Widget greq, Widget gnew, ArgList args, Cardinal *num_args)
{
MemStripChartWidget w = (MemStripChartWidget)gnew;
if (w->mem_strip_chart.update > 0)
w->mem_strip_chart.interval_id = XtAppAddTimeOut(
XtWidgetToApplicationContext(gnew),
w->mem_strip_chart.update * MS_PER_SEC,
draw_it, (XtPointer) gnew);
CreateGC(w, (unsigned int) ALL_GCS);
w->mem_strip_chart.scale = w->mem_strip_chart.min_scale;
w->mem_strip_chart.interval = 0;
w->mem_strip_chart.max_value = 0.0;
w->mem_strip_chart.points = NULL;
SetPoints(w);
}
static void Destroy (Widget gw)
{
MemStripChartWidget w = (MemStripChartWidget)gw;
if (w->mem_strip_chart.update > 0)
XtRemoveTimeOut (w->mem_strip_chart.interval_id);
if (w->mem_strip_chart.points)
XtFree((char *) w->mem_strip_chart.points);
DestroyGC(w, (unsigned int) 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 Redisplay(Widget w, XEvent *event, Region region)
{
if (event->type == GraphicsExpose)
(void) repaint_window ((MemStripChartWidget)w, event->xgraphicsexpose.x,
event->xgraphicsexpose.width);
else
(void) repaint_window ((MemStripChartWidget)w, event->xexpose.x,
event->xexpose.width);
}
/* ARGSUSED */
static void
draw_it(XtPointer client_data, XtIntervalId *id)
{
MemStripChartWidget w = (MemStripChartWidget)client_data;
MemStripChartCallbackData value;
double usedmem;
if (w->mem_strip_chart.update > 0)
w->mem_strip_chart.interval_id =
XtAppAddTimeOut(XtWidgetToApplicationContext( (Widget) w),
w->mem_strip_chart.update * MS_PER_SEC, draw_it,client_data);
if (w->mem_strip_chart.interval >= (int)w->core.width)
MoveChart( (MemStripChartWidget) w, TRUE);
/* Get the value, stash the point and draw corresponding line. */
if (w->mem_strip_chart.get_value == NULL)
return;
XtCallCallbacks( (Widget)w, XtNgetValue, (XtPointer)&value );
/*
* Keep w->mem_strip_chart.max_value up to date, and if this data
* point is off the graph, change the scale to make it fit.
*/
usedmem = 1.0 + value.swap;
if (usedmem > w->mem_strip_chart.max_value) {
w->mem_strip_chart.max_value = usedmem;
if (XtIsRealized((Widget)w) &&
w->mem_strip_chart.max_value > w->mem_strip_chart.scale) {
XClearWindow( XtDisplay (w), XtWindow (w));
w->mem_strip_chart.interval = repaint_window(w, 0, (int) w->core.width);
}
}
w->mem_strip_chart.valuedata[w->mem_strip_chart.interval] = value;
if (XtIsRealized((Widget)w)) {
/* XXX DrawMemStrip(w, w->mem_strip_chart.interval, value); */
DrawMemStrip(w, w->mem_strip_chart.interval);
/*
* Fill in the graph lines we just painted over.
*/
if (w->mem_strip_chart.points != NULL) {
w->mem_strip_chart.points[0].x = w->mem_strip_chart.interval;
XDrawPoints(XtDisplay(w), XtWindow(w), w->mem_strip_chart.hiGC,
w->mem_strip_chart.points, w->mem_strip_chart.scale - 1,
CoordModePrevious);
}
XFlush(XtDisplay(w)); /* Flush output buffers */
}
w->mem_strip_chart.interval++; /* Next point */
} /* draw_it */
/* 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->mem_strip_chart.max_value is updated to reflect the
* largest data point.
*/
static int
repaint_window(MemStripChartWidget w, int left, int width)
{
int i, j;
int next = w->mem_strip_chart.interval;
int scale = w->mem_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->mem_strip_chart.interval != 0 || scale <= (int)w->mem_strip_chart.max_value)
scale = ((int) (w->mem_strip_chart.max_value)) + 1;
if (scale < w->mem_strip_chart.min_scale)
scale = w->mem_strip_chart.min_scale;
if (scale != w->mem_strip_chart.scale) {
w->mem_strip_chart.scale = scale;
left = 0;
width = next;
scalewidth = w->core.width;
SetPoints(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++) {
DrawMemStrip(w, i);
}
/* Draw graph reference lines */
for (i = 1; i < w->mem_strip_chart.scale; i++) {
j = i * ((int)w->core.height / w->mem_strip_chart.scale);
XDrawLine(dpy, win, w->mem_strip_chart.hiGC, left, j, scalewidth, j);
}
}
return(next);
}
/* Function Name: MoveChart
* Description: moves the chart over when it would run off the end.
* Arguments: w - the load widget.
* blit - blit the bits? (TRUE/FALSE).
* Returns: none.
*/
static void
MoveChart(MemStripChartWidget w, Boolean blit)
{
double old_max;
int left, i, j;
int next = w->mem_strip_chart.interval;
if (!XtIsRealized((Widget) w)) return;
if (w->mem_strip_chart.jump_val < 0) w->mem_strip_chart.jump_val = DEFAULT_JUMP;
if (w->mem_strip_chart.jump_val == DEFAULT_JUMP)
j = w->core.width >> 1; /* Half the window width. */
else {
j = w->core.width - w->mem_strip_chart.jump_val;
if (j < 0) j = 0;
}
(void) memmove((char *)(w->mem_strip_chart.valuedata),
(char *)(w->mem_strip_chart.valuedata + next - j),
j * sizeof(MemStripChartCallbackData));
next = w->mem_strip_chart.interval = j;
/*
* Since we just lost some data, recompute the
* w->mem_strip_chart.max_value.
*/
old_max = w->mem_strip_chart.max_value;
w->mem_strip_chart.max_value = 0.0;
for (i = 0; i < next; i++) {
if (w->mem_strip_chart.valuedata[i].swap + 1.0 > w->mem_strip_chart.max_value)
w->mem_strip_chart.max_value = w->mem_strip_chart.valuedata[i].swap + 1.0;
}
if (!blit) return; /* we are done... */
if ( ((int) old_max) != ( (int) w->mem_strip_chart.max_value) ) {
XClearWindow(XtDisplay(w), XtWindow(w));
repaint_window(w, 0, (int) w->core.width);
return;
}
XCopyArea(XtDisplay((Widget)w), XtWindow((Widget)w), XtWindow((Widget)w),
w->mem_strip_chart.hiGC, (int) w->core.width - j, 0,
(unsigned int) j, (unsigned int) w->core.height,
0, 0);
XClearArea(XtDisplay((Widget)w), XtWindow((Widget)w),
(int) j, 0,
(unsigned int) w->core.width - j, (unsigned int)w->core.height,
FALSE);
/* Draw graph reference lines */
left = j;
for (i = 1; i < w->mem_strip_chart.scale; i++) {
j = i * ((int)w->core.height / w->mem_strip_chart.scale);
XDrawLine(XtDisplay((Widget) w), XtWindow( (Widget) w),
w->mem_strip_chart.hiGC, left, j, (int)w->core.width, j);
}
return;
}
/* ARGSUSED */
static Boolean SetValues (Widget current, Widget request, Widget new, ArgList args, Cardinal *num_args)
{
MemStripChartWidget old = (MemStripChartWidget)current;
MemStripChartWidget w = (MemStripChartWidget)new;
Boolean ret_val = FALSE;
unsigned int new_gc = NO_GCS;
if (w->mem_strip_chart.update != old->mem_strip_chart.update) {
if (old->mem_strip_chart.update > 0)
XtRemoveTimeOut (old->mem_strip_chart.interval_id);
if (w->mem_strip_chart.update > 0)
w->mem_strip_chart.interval_id =
XtAppAddTimeOut(XtWidgetToApplicationContext(new),
w->mem_strip_chart.update * MS_PER_SEC,
draw_it, (XtPointer)w);
}
if ( w->mem_strip_chart.min_scale > (int) ((w->mem_strip_chart.max_value) + 1) )
ret_val = TRUE;
if ( w->mem_strip_chart.fgpixel != old->mem_strip_chart.fgpixel ) {
new_gc |= FOREGROUND;
ret_val = True;
}
if ( w->mem_strip_chart.hipixel != old->mem_strip_chart.hipixel ) {
new_gc |= HIGHLIGHT;
ret_val = True;
}
if ( w->mem_strip_chart.codepixel != old->mem_strip_chart.codepixel ) {
new_gc |= CODE;
ret_val = True;
}
if ( w->mem_strip_chart.cachedpixel != old->mem_strip_chart.cachedpixel ) {
new_gc |= SHARED;
ret_val = True;
}
if ( w->mem_strip_chart.bufferpixel != old->mem_strip_chart.bufferpixel ) {
new_gc |= BUFFER;
ret_val = True;
}
if ( w->mem_strip_chart.freepixel != old->mem_strip_chart.freepixel ) {
new_gc |= FREE;
ret_val = True;
}
if ( w->mem_strip_chart.swappixel != old->mem_strip_chart.swappixel ) {
new_gc |= SWAP;
ret_val = True;
}
DestroyGC(old, new_gc);
CreateGC(w, new_gc);
return( ret_val );
}
/* Function Name: SetPoints
* Description: Sets up the polypoint that will be used to draw in
* the graph lines.
* Arguments: w - the MemStripChart widget.
* Returns: none.
*/
#define HEIGHT ( (unsigned int) w->core.height)
static void
SetPoints(Widget widget)
{
MemStripChartWidget w = (MemStripChartWidget) widget;
XPoint * points;
Cardinal size;
int i;
if (w->mem_strip_chart.scale <= 1) { /* no scale lines. */
XtFree ((char *) w->mem_strip_chart.points);
w->mem_strip_chart.points = NULL;
return;
}
size = sizeof(XPoint) * (w->mem_strip_chart.scale - 1);
points = (XPoint *) XtRealloc( (XtPointer) w->mem_strip_chart.points, size);
w->mem_strip_chart.points = points;
/* Draw graph reference lines into clip mask */
for (i = 1; i < w->mem_strip_chart.scale; i++) {
points[i - 1].x = 0;
points[i - 1].y = HEIGHT / w->mem_strip_chart.scale;
}
}
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