1 /****************************************************************************
2 * RRDtool 1.3.2 Copyright by Tobi Oetiker, 1997-2008
3 ****************************************************************************
4 * rrd__graph.c produce graphs from data in rrdfiles
5 ****************************************************************************/
20 #include "plbasename.h"
23 #if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
36 #include "rrd_graph.h"
37 #include "rrd_client.h"
39 /* some constant definitions */
43 #ifndef RRD_DEFAULT_FONT
44 /* there is special code later to pick Cour.ttf when running on windows */
45 #define RRD_DEFAULT_FONT "DejaVu Sans Mono,Bitstream Vera Sans Mono,monospace,Courier"
48 text_prop_t text_prop[] = {
49 {8.0, RRD_DEFAULT_FONT,NULL}
51 {9.0, RRD_DEFAULT_FONT,NULL}
53 {7.0, RRD_DEFAULT_FONT,NULL}
55 {8.0, RRD_DEFAULT_FONT,NULL}
57 {8.0, RRD_DEFAULT_FONT,NULL} /* legend */
59 {5.5, RRD_DEFAULT_FONT,NULL} /* watermark */
63 {0, 0, TMT_SECOND, 30, TMT_MINUTE, 5, TMT_MINUTE, 5, 0, "%H:%M"}
65 {2, 0, TMT_MINUTE, 1, TMT_MINUTE, 5, TMT_MINUTE, 5, 0, "%H:%M"}
67 {5, 0, TMT_MINUTE, 2, TMT_MINUTE, 10, TMT_MINUTE, 10, 0, "%H:%M"}
69 {10, 0, TMT_MINUTE, 5, TMT_MINUTE, 20, TMT_MINUTE, 20, 0, "%H:%M"}
71 {30, 0, TMT_MINUTE, 10, TMT_HOUR, 1, TMT_HOUR, 1, 0, "%H:%M"}
73 {60, 0, TMT_MINUTE, 30, TMT_HOUR, 2, TMT_HOUR, 2, 0, "%H:%M"}
75 {60, 24 * 3600, TMT_MINUTE, 30, TMT_HOUR, 2, TMT_HOUR, 6, 0, "%a %H:%M"}
77 {180, 0, TMT_HOUR, 1, TMT_HOUR, 6, TMT_HOUR, 6, 0, "%H:%M"}
79 {180, 24 * 3600, TMT_HOUR, 1, TMT_HOUR, 6, TMT_HOUR, 12, 0, "%a %H:%M"}
81 /*{300, 0, TMT_HOUR,3, TMT_HOUR,12, TMT_HOUR,12, 12*3600,"%a %p"}, this looks silly */
82 {600, 0, TMT_HOUR, 6, TMT_DAY, 1, TMT_DAY, 1, 24 * 3600, "%a"}
84 {1200, 0, TMT_HOUR, 6, TMT_DAY, 1, TMT_DAY, 1, 24 * 3600, "%d"}
86 {1800, 0, TMT_HOUR, 12, TMT_DAY, 1, TMT_DAY, 2, 24 * 3600, "%a %d"}
88 {2400, 0, TMT_HOUR, 12, TMT_DAY, 1, TMT_DAY, 2, 24 * 3600, "%a"}
90 {3600, 0, TMT_DAY, 1, TMT_WEEK, 1, TMT_WEEK, 1, 7 * 24 * 3600, "Week %V"}
92 {3 * 3600, 0, TMT_WEEK, 1, TMT_MONTH, 1, TMT_WEEK, 2, 7 * 24 * 3600,
95 {6 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 1, TMT_MONTH, 1, 30 * 24 * 3600,
98 {48 * 3600, 0, TMT_MONTH, 1, TMT_MONTH, 3, TMT_MONTH, 3, 30 * 24 * 3600,
101 {315360, 0, TMT_MONTH, 3, TMT_YEAR, 1, TMT_YEAR, 1, 365 * 24 * 3600, "%Y"}
103 {10 * 24 * 3600, 0, TMT_YEAR, 1, TMT_YEAR, 1, TMT_YEAR, 1,
104 365 * 24 * 3600, "%y"}
106 {-1, 0, TMT_MONTH, 0, TMT_MONTH, 0, TMT_MONTH, 0, 0, ""}
109 /* sensible y label intervals ...*/
133 {20.0, {1, 5, 10, 20}
139 {100.0, {1, 2, 5, 10}
142 {200.0, {1, 5, 10, 20}
145 {500.0, {1, 2, 4, 10}
153 gfx_color_t graph_col[] = /* default colors */
155 {1.00, 1.00, 1.00, 1.00}, /* canvas */
156 {0.95, 0.95, 0.95, 1.00}, /* background */
157 {0.81, 0.81, 0.81, 1.00}, /* shade A */
158 {0.62, 0.62, 0.62, 1.00}, /* shade B */
159 {0.56, 0.56, 0.56, 0.75}, /* grid */
160 {0.87, 0.31, 0.31, 0.60}, /* major grid */
161 {0.00, 0.00, 0.00, 1.00}, /* font */
162 {0.50, 0.12, 0.12, 1.00}, /* arrow */
163 {0.12, 0.12, 0.12, 1.00}, /* axis */
164 {0.00, 0.00, 0.00, 1.00} /* frame */
171 # define DPRINT(x) (void)(printf x, printf("\n"))
177 /* initialize with xtr(im,0); */
185 pixie = (double) im->xsize / (double) (im->end - im->start);
188 return (int) ((double) im->xorigin + pixie * (mytime - im->start));
191 /* translate data values into y coordinates */
200 if (!im->logarithmic)
201 pixie = (double) im->ysize / (im->maxval - im->minval);
204 (double) im->ysize / (log10(im->maxval) - log10(im->minval));
206 } else if (!im->logarithmic) {
207 yval = im->yorigin - pixie * (value - im->minval);
209 if (value < im->minval) {
212 yval = im->yorigin - pixie * (log10(value) - log10(im->minval));
220 /* conversion function for symbolic entry names */
223 #define conv_if(VV,VVV) \
224 if (strcmp(#VV, string) == 0) return VVV ;
230 conv_if(PRINT, GF_PRINT);
231 conv_if(GPRINT, GF_GPRINT);
232 conv_if(COMMENT, GF_COMMENT);
233 conv_if(HRULE, GF_HRULE);
234 conv_if(VRULE, GF_VRULE);
235 conv_if(LINE, GF_LINE);
236 conv_if(AREA, GF_AREA);
237 conv_if(STACK, GF_STACK);
238 conv_if(TICK, GF_TICK);
239 conv_if(TEXTALIGN, GF_TEXTALIGN);
240 conv_if(DEF, GF_DEF);
241 conv_if(CDEF, GF_CDEF);
242 conv_if(VDEF, GF_VDEF);
243 conv_if(XPORT, GF_XPORT);
244 conv_if(SHIFT, GF_SHIFT);
246 return (enum gf_en)(-1);
249 enum gfx_if_en if_conv(
253 conv_if(PNG, IF_PNG);
254 conv_if(SVG, IF_SVG);
255 conv_if(EPS, IF_EPS);
256 conv_if(PDF, IF_PDF);
258 return (enum gfx_if_en)(-1);
261 enum tmt_en tmt_conv(
265 conv_if(SECOND, TMT_SECOND);
266 conv_if(MINUTE, TMT_MINUTE);
267 conv_if(HOUR, TMT_HOUR);
268 conv_if(DAY, TMT_DAY);
269 conv_if(WEEK, TMT_WEEK);
270 conv_if(MONTH, TMT_MONTH);
271 conv_if(YEAR, TMT_YEAR);
272 return (enum tmt_en)(-1);
275 enum grc_en grc_conv(
279 conv_if(BACK, GRC_BACK);
280 conv_if(CANVAS, GRC_CANVAS);
281 conv_if(SHADEA, GRC_SHADEA);
282 conv_if(SHADEB, GRC_SHADEB);
283 conv_if(GRID, GRC_GRID);
284 conv_if(MGRID, GRC_MGRID);
285 conv_if(FONT, GRC_FONT);
286 conv_if(ARROW, GRC_ARROW);
287 conv_if(AXIS, GRC_AXIS);
288 conv_if(FRAME, GRC_FRAME);
290 return (enum grc_en)(-1);
293 enum text_prop_en text_prop_conv(
297 conv_if(DEFAULT, TEXT_PROP_DEFAULT);
298 conv_if(TITLE, TEXT_PROP_TITLE);
299 conv_if(AXIS, TEXT_PROP_AXIS);
300 conv_if(UNIT, TEXT_PROP_UNIT);
301 conv_if(LEGEND, TEXT_PROP_LEGEND);
302 conv_if(WATERMARK, TEXT_PROP_WATERMARK);
303 return (enum text_prop_en)(-1);
313 cairo_status_t status = (cairo_status_t) 0;
318 if (im->daemon_addr != NULL)
319 free(im->daemon_addr);
321 for (i = 0; i < (unsigned) im->gdes_c; i++) {
322 if (im->gdes[i].data_first) {
323 /* careful here, because a single pointer can occur several times */
324 free(im->gdes[i].data);
325 if (im->gdes[i].ds_namv) {
326 for (ii = 0; ii < im->gdes[i].ds_cnt; ii++)
327 free(im->gdes[i].ds_namv[ii]);
328 free(im->gdes[i].ds_namv);
331 /* free allocated memory used for dashed lines */
332 if (im->gdes[i].p_dashes != NULL)
333 free(im->gdes[i].p_dashes);
335 free(im->gdes[i].p_data);
336 free(im->gdes[i].rpnp);
339 if (im->font_options)
340 cairo_font_options_destroy(im->font_options);
343 status = cairo_status(im->cr);
344 cairo_destroy(im->cr);
346 if (im->rendered_image) {
347 free(im->rendered_image);
351 g_object_unref (im->layout);
355 cairo_surface_destroy(im->surface);
358 fprintf(stderr, "OOPS: Cairo has issues it can't even die: %s\n",
359 cairo_status_to_string(status));
364 /* find SI magnitude symbol for the given number*/
366 image_desc_t *im, /* image description */
372 char *symbol[] = { "a", /* 10e-18 Atto */
373 "f", /* 10e-15 Femto */
374 "p", /* 10e-12 Pico */
375 "n", /* 10e-9 Nano */
376 "u", /* 10e-6 Micro */
377 "m", /* 10e-3 Milli */
382 "T", /* 10e12 Tera */
383 "P", /* 10e15 Peta */
390 if (*value == 0.0 || isnan(*value)) {
394 sindex = floor(log(fabs(*value)) / log((double) im->base));
395 *magfact = pow((double) im->base, (double) sindex);
396 (*value) /= (*magfact);
398 if (sindex <= symbcenter && sindex >= -symbcenter) {
399 (*symb_ptr) = symbol[sindex + symbcenter];
406 static char si_symbol[] = {
407 'a', /* 10e-18 Atto */
408 'f', /* 10e-15 Femto */
409 'p', /* 10e-12 Pico */
410 'n', /* 10e-9 Nano */
411 'u', /* 10e-6 Micro */
412 'm', /* 10e-3 Milli */
417 'T', /* 10e12 Tera */
418 'P', /* 10e15 Peta */
421 static const int si_symbcenter = 6;
423 /* find SI magnitude symbol for the numbers on the y-axis*/
425 image_desc_t *im /* image description */
429 double digits, viewdigits = 0;
432 floor(log(max(fabs(im->minval), fabs(im->maxval))) /
433 log((double) im->base));
435 if (im->unitsexponent != 9999) {
436 /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
437 viewdigits = floor((double)(im->unitsexponent / 3));
442 im->magfact = pow((double) im->base, digits);
445 printf("digits %6.3f im->magfact %6.3f\n", digits, im->magfact);
448 im->viewfactor = im->magfact / pow((double) im->base, viewdigits);
450 if (((viewdigits + si_symbcenter) < sizeof(si_symbol)) &&
451 ((viewdigits + si_symbcenter) >= 0))
452 im->symbol = si_symbol[(int) viewdigits + si_symbcenter];
457 /* move min and max values around to become sensible */
462 double sensiblevalues[] = { 1000.0, 900.0, 800.0, 750.0, 700.0,
463 600.0, 500.0, 400.0, 300.0, 250.0,
464 200.0, 125.0, 100.0, 90.0, 80.0,
465 75.0, 70.0, 60.0, 50.0, 40.0, 30.0,
466 25.0, 20.0, 10.0, 9.0, 8.0,
467 7.0, 6.0, 5.0, 4.0, 3.5, 3.0,
468 2.5, 2.0, 1.8, 1.5, 1.2, 1.0,
469 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, 0.0, -1
472 double scaled_min, scaled_max;
479 printf("Min: %6.2f Max: %6.2f MagFactor: %6.2f\n",
480 im->minval, im->maxval, im->magfact);
483 if (isnan(im->ygridstep)) {
484 if (im->extra_flags & ALTAUTOSCALE) {
485 /* measure the amplitude of the function. Make sure that
486 graph boundaries are slightly higher then max/min vals
487 so we can see amplitude on the graph */
490 delt = im->maxval - im->minval;
492 fact = 2.0 * pow(10.0,
494 (max(fabs(im->minval), fabs(im->maxval)) /
497 adj = (fact - delt) * 0.55;
500 ("Min: %6.2f Max: %6.2f delt: %6.2f fact: %6.2f adj: %6.2f\n",
501 im->minval, im->maxval, delt, fact, adj);
506 } else if (im->extra_flags & ALTAUTOSCALE_MIN) {
507 /* measure the amplitude of the function. Make sure that
508 graph boundaries are slightly lower than min vals
509 so we can see amplitude on the graph */
510 adj = (im->maxval - im->minval) * 0.1;
512 } else if (im->extra_flags & ALTAUTOSCALE_MAX) {
513 /* measure the amplitude of the function. Make sure that
514 graph boundaries are slightly higher than max vals
515 so we can see amplitude on the graph */
516 adj = (im->maxval - im->minval) * 0.1;
519 scaled_min = im->minval / im->magfact;
520 scaled_max = im->maxval / im->magfact;
522 for (i = 1; sensiblevalues[i] > 0; i++) {
523 if (sensiblevalues[i - 1] >= scaled_min &&
524 sensiblevalues[i] <= scaled_min)
525 im->minval = sensiblevalues[i] * (im->magfact);
527 if (-sensiblevalues[i - 1] <= scaled_min &&
528 -sensiblevalues[i] >= scaled_min)
529 im->minval = -sensiblevalues[i - 1] * (im->magfact);
531 if (sensiblevalues[i - 1] >= scaled_max &&
532 sensiblevalues[i] <= scaled_max)
533 im->maxval = sensiblevalues[i - 1] * (im->magfact);
535 if (-sensiblevalues[i - 1] <= scaled_max &&
536 -sensiblevalues[i] >= scaled_max)
537 im->maxval = -sensiblevalues[i] * (im->magfact);
541 /* adjust min and max to the grid definition if there is one */
542 im->minval = (double) im->ylabfact * im->ygridstep *
543 floor(im->minval / ((double) im->ylabfact * im->ygridstep));
544 im->maxval = (double) im->ylabfact * im->ygridstep *
545 ceil(im->maxval / ((double) im->ylabfact * im->ygridstep));
549 fprintf(stderr, "SCALED Min: %6.2f Max: %6.2f Factor: %6.2f\n",
550 im->minval, im->maxval, im->magfact);
558 if (isnan(im->minval) || isnan(im->maxval))
561 if (im->logarithmic) {
562 double ya, yb, ypix, ypixfrac;
563 double log10_range = log10(im->maxval) - log10(im->minval);
565 ya = pow((double) 10, floor(log10(im->minval)));
566 while (ya < im->minval)
569 return; /* don't have y=10^x gridline */
571 if (yb <= im->maxval) {
572 /* we have at least 2 y=10^x gridlines.
573 Make sure distance between them in pixels
574 are an integer by expanding im->maxval */
575 double y_pixel_delta = ytr(im, ya) - ytr(im, yb);
576 double factor = y_pixel_delta / floor(y_pixel_delta);
577 double new_log10_range = factor * log10_range;
578 double new_ymax_log10 = log10(im->minval) + new_log10_range;
580 im->maxval = pow(10, new_ymax_log10);
581 ytr(im, DNAN); /* reset precalc */
582 log10_range = log10(im->maxval) - log10(im->minval);
584 /* make sure first y=10^x gridline is located on
585 integer pixel position by moving scale slightly
586 downwards (sub-pixel movement) */
587 ypix = ytr(im, ya) + im->ysize; /* add im->ysize so it always is positive */
588 ypixfrac = ypix - floor(ypix);
589 if (ypixfrac > 0 && ypixfrac < 1) {
590 double yfrac = ypixfrac / im->ysize;
592 im->minval = pow(10, log10(im->minval) - yfrac * log10_range);
593 im->maxval = pow(10, log10(im->maxval) - yfrac * log10_range);
594 ytr(im, DNAN); /* reset precalc */
597 /* Make sure we have an integer pixel distance between
598 each minor gridline */
599 double ypos1 = ytr(im, im->minval);
600 double ypos2 = ytr(im, im->minval + im->ygrid_scale.gridstep);
601 double y_pixel_delta = ypos1 - ypos2;
602 double factor = y_pixel_delta / floor(y_pixel_delta);
603 double new_range = factor * (im->maxval - im->minval);
604 double gridstep = im->ygrid_scale.gridstep;
605 double minor_y, minor_y_px, minor_y_px_frac;
607 if (im->maxval > 0.0)
608 im->maxval = im->minval + new_range;
610 im->minval = im->maxval - new_range;
611 ytr(im, DNAN); /* reset precalc */
612 /* make sure first minor gridline is on integer pixel y coord */
613 minor_y = gridstep * floor(im->minval / gridstep);
614 while (minor_y < im->minval)
616 minor_y_px = ytr(im, minor_y) + im->ysize; /* ensure > 0 by adding ysize */
617 minor_y_px_frac = minor_y_px - floor(minor_y_px);
618 if (minor_y_px_frac > 0 && minor_y_px_frac < 1) {
619 double yfrac = minor_y_px_frac / im->ysize;
620 double range = im->maxval - im->minval;
622 im->minval = im->minval - yfrac * range;
623 im->maxval = im->maxval - yfrac * range;
624 ytr(im, DNAN); /* reset precalc */
626 calc_horizontal_grid(im); /* recalc with changed im->maxval */
630 /* reduce data reimplementation by Alex */
633 enum cf_en cf, /* which consolidation function ? */
634 unsigned long cur_step, /* step the data currently is in */
635 time_t *start, /* start, end and step as requested ... */
636 time_t *end, /* ... by the application will be ... */
637 unsigned long *step, /* ... adjusted to represent reality */
638 unsigned long *ds_cnt, /* number of data sources in file */
640 { /* two dimensional array containing the data */
641 int i, reduce_factor = ceil((double) (*step) / (double) cur_step);
642 unsigned long col, dst_row, row_cnt, start_offset, end_offset, skiprows =
644 rrd_value_t *srcptr, *dstptr;
646 (*step) = cur_step * reduce_factor; /* set new step size for reduced data */
649 row_cnt = ((*end) - (*start)) / cur_step;
655 printf("Reducing %lu rows with factor %i time %lu to %lu, step %lu\n",
656 row_cnt, reduce_factor, *start, *end, cur_step);
657 for (col = 0; col < row_cnt; col++) {
658 printf("time %10lu: ", *start + (col + 1) * cur_step);
659 for (i = 0; i < *ds_cnt; i++)
660 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
665 /* We have to combine [reduce_factor] rows of the source
666 ** into one row for the destination. Doing this we also
667 ** need to take care to combine the correct rows. First
668 ** alter the start and end time so that they are multiples
669 ** of the new step time. We cannot reduce the amount of
670 ** time so we have to move the end towards the future and
671 ** the start towards the past.
673 end_offset = (*end) % (*step);
674 start_offset = (*start) % (*step);
676 /* If there is a start offset (which cannot be more than
677 ** one destination row), skip the appropriate number of
678 ** source rows and one destination row. The appropriate
679 ** number is what we do know (start_offset/cur_step) of
680 ** the new interval (*step/cur_step aka reduce_factor).
683 printf("start_offset: %lu end_offset: %lu\n", start_offset, end_offset);
684 printf("row_cnt before: %lu\n", row_cnt);
687 (*start) = (*start) - start_offset;
688 skiprows = reduce_factor - start_offset / cur_step;
689 srcptr += skiprows * *ds_cnt;
690 for (col = 0; col < (*ds_cnt); col++)
695 printf("row_cnt between: %lu\n", row_cnt);
698 /* At the end we have some rows that are not going to be
699 ** used, the amount is end_offset/cur_step
702 (*end) = (*end) - end_offset + (*step);
703 skiprows = end_offset / cur_step;
707 printf("row_cnt after: %lu\n", row_cnt);
710 /* Sanity check: row_cnt should be multiple of reduce_factor */
711 /* if this gets triggered, something is REALLY WRONG ... we die immediately */
713 if (row_cnt % reduce_factor) {
714 printf("SANITY CHECK: %lu rows cannot be reduced by %i \n",
715 row_cnt, reduce_factor);
716 printf("BUG in reduce_data()\n");
720 /* Now combine reduce_factor intervals at a time
721 ** into one interval for the destination.
724 for (dst_row = 0; (long int) row_cnt >= reduce_factor; dst_row++) {
725 for (col = 0; col < (*ds_cnt); col++) {
726 rrd_value_t newval = DNAN;
727 unsigned long validval = 0;
729 for (i = 0; i < reduce_factor; i++) {
730 if (isnan(srcptr[i * (*ds_cnt) + col])) {
735 newval = srcptr[i * (*ds_cnt) + col];
744 newval += srcptr[i * (*ds_cnt) + col];
747 newval = min(newval, srcptr[i * (*ds_cnt) + col]);
750 /* an interval contains a failure if any subintervals contained a failure */
752 newval = max(newval, srcptr[i * (*ds_cnt) + col]);
755 newval = srcptr[i * (*ds_cnt) + col];
781 srcptr += (*ds_cnt) * reduce_factor;
782 row_cnt -= reduce_factor;
784 /* If we had to alter the endtime, we didn't have enough
785 ** source rows to fill the last row. Fill it with NaN.
788 for (col = 0; col < (*ds_cnt); col++)
791 row_cnt = ((*end) - (*start)) / *step;
793 printf("Done reducing. Currently %lu rows, time %lu to %lu, step %lu\n",
794 row_cnt, *start, *end, *step);
795 for (col = 0; col < row_cnt; col++) {
796 printf("time %10lu: ", *start + (col + 1) * (*step));
797 for (i = 0; i < *ds_cnt; i++)
798 printf(" %8.2e", srcptr[*ds_cnt * col + i]);
805 /* get the data required for the graphs from the
814 /* pull the data from the rrd files ... */
815 for (i = 0; i < (int) im->gdes_c; i++) {
816 /* only GF_DEF elements fetch data */
817 if (im->gdes[i].gf != GF_DEF)
821 /* do we have it already ? */
822 for (ii = 0; ii < i; ii++) {
823 if (im->gdes[ii].gf != GF_DEF)
825 if ((strcmp(im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
826 && (im->gdes[i].cf == im->gdes[ii].cf)
827 && (im->gdes[i].cf_reduce == im->gdes[ii].cf_reduce)
828 && (im->gdes[i].start_orig == im->gdes[ii].start_orig)
829 && (im->gdes[i].end_orig == im->gdes[ii].end_orig)
830 && (im->gdes[i].step_orig == im->gdes[ii].step_orig)) {
831 /* OK, the data is already there.
832 ** Just copy the header portion
834 im->gdes[i].start = im->gdes[ii].start;
835 im->gdes[i].end = im->gdes[ii].end;
836 im->gdes[i].step = im->gdes[ii].step;
837 im->gdes[i].ds_cnt = im->gdes[ii].ds_cnt;
838 im->gdes[i].ds_namv = im->gdes[ii].ds_namv;
839 im->gdes[i].data = im->gdes[ii].data;
840 im->gdes[i].data_first = 0;
847 unsigned long ft_step = im->gdes[i].step; /* ft_step will record what we got from fetch */
850 * - a connection to the daemon has been established
851 * - this is the first occurrence of that RRD file
853 if (rrdc_is_connected(im->daemon_addr))
858 for (ii = 0; ii < i; ii++)
860 if (strcmp (im->gdes[i].rrd, im->gdes[ii].rrd) == 0)
869 status = rrdc_flush (im->gdes[i].rrd);
872 rrd_set_error ("rrdc_flush (%s) failed with status %i.",
873 im->gdes[i].rrd, status);
877 } /* if (rrdc_is_connected()) */
879 if ((rrd_fetch_fn(im->gdes[i].rrd,
885 &im->gdes[i].ds_namv,
886 &im->gdes[i].data)) == -1) {
889 im->gdes[i].data_first = 1;
891 if (ft_step < im->gdes[i].step) {
892 reduce_data(im->gdes[i].cf_reduce,
897 &im->gdes[i].ds_cnt, &im->gdes[i].data);
899 im->gdes[i].step = ft_step;
903 /* lets see if the required data source is really there */
904 for (ii = 0; ii < (int) im->gdes[i].ds_cnt; ii++) {
905 if (strcmp(im->gdes[i].ds_namv[ii], im->gdes[i].ds_nam) == 0) {
909 if (im->gdes[i].ds == -1) {
910 rrd_set_error("No DS called '%s' in '%s'",
911 im->gdes[i].ds_nam, im->gdes[i].rrd);
919 /* evaluate the expressions in the CDEF functions */
921 /*************************************************************
923 *************************************************************/
925 long find_var_wrapper(
929 return find_var((image_desc_t *) arg1, key);
932 /* find gdes containing var*/
939 for (ii = 0; ii < im->gdes_c - 1; ii++) {
940 if ((im->gdes[ii].gf == GF_DEF
941 || im->gdes[ii].gf == GF_VDEF || im->gdes[ii].gf == GF_CDEF)
942 && (strcmp(im->gdes[ii].vname, key) == 0)) {
949 /* find the greatest common divisor for all the numbers
950 in the 0 terminated num array */
957 for (i = 0; num[i + 1] != 0; i++) {
959 rest = num[i] % num[i + 1];
965 /* return i==0?num[i]:num[i-1]; */
969 /* run the rpn calculator on all the VDEF and CDEF arguments */
976 long *steparray, rpi;
981 rpnstack_init(&rpnstack);
983 for (gdi = 0; gdi < im->gdes_c; gdi++) {
984 /* Look for GF_VDEF and GF_CDEF in the same loop,
985 * so CDEFs can use VDEFs and vice versa
987 switch (im->gdes[gdi].gf) {
991 graph_desc_t *vdp = &im->gdes[im->gdes[gdi].vidx];
993 /* remove current shift */
994 vdp->start -= vdp->shift;
995 vdp->end -= vdp->shift;
998 if (im->gdes[gdi].shidx >= 0)
999 vdp->shift = im->gdes[im->gdes[gdi].shidx].vf.val;
1002 vdp->shift = im->gdes[gdi].shval;
1004 /* normalize shift to multiple of consolidated step */
1005 vdp->shift = (vdp->shift / (long) vdp->step) * (long) vdp->step;
1008 vdp->start += vdp->shift;
1009 vdp->end += vdp->shift;
1013 /* A VDEF has no DS. This also signals other parts
1014 * of rrdtool that this is a VDEF value, not a CDEF.
1016 im->gdes[gdi].ds_cnt = 0;
1017 if (vdef_calc(im, gdi)) {
1018 rrd_set_error("Error processing VDEF '%s'",
1019 im->gdes[gdi].vname);
1020 rpnstack_free(&rpnstack);
1025 im->gdes[gdi].ds_cnt = 1;
1026 im->gdes[gdi].ds = 0;
1027 im->gdes[gdi].data_first = 1;
1028 im->gdes[gdi].start = 0;
1029 im->gdes[gdi].end = 0;
1034 /* Find the variables in the expression.
1035 * - VDEF variables are substituted by their values
1036 * and the opcode is changed into OP_NUMBER.
1037 * - CDEF variables are analized for their step size,
1038 * the lowest common denominator of all the step
1039 * sizes of the data sources involved is calculated
1040 * and the resulting number is the step size for the
1041 * resulting data source.
1043 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1044 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1045 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1046 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1048 if (im->gdes[ptr].ds_cnt == 0) { /* this is a VDEF data source */
1051 ("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
1052 im->gdes[gdi].vname, im->gdes[ptr].vname);
1053 printf("DEBUG: value from vdef is %f\n",
1054 im->gdes[ptr].vf.val);
1056 im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
1057 im->gdes[gdi].rpnp[rpi].op = OP_NUMBER;
1058 } else { /* normal variables and PREF(variables) */
1060 /* add one entry to the array that keeps track of the step sizes of the
1061 * data sources going into the CDEF. */
1063 (long*)rrd_realloc(steparray,
1065 1) * sizeof(*steparray))) == NULL) {
1066 rrd_set_error("realloc steparray");
1067 rpnstack_free(&rpnstack);
1071 steparray[stepcnt - 1] = im->gdes[ptr].step;
1073 /* adjust start and end of cdef (gdi) so
1074 * that it runs from the latest start point
1075 * to the earliest endpoint of any of the
1076 * rras involved (ptr)
1079 if (im->gdes[gdi].start < im->gdes[ptr].start)
1080 im->gdes[gdi].start = im->gdes[ptr].start;
1082 if (im->gdes[gdi].end == 0 ||
1083 im->gdes[gdi].end > im->gdes[ptr].end)
1084 im->gdes[gdi].end = im->gdes[ptr].end;
1086 /* store pointer to the first element of
1087 * the rra providing data for variable,
1088 * further save step size and data source
1091 im->gdes[gdi].rpnp[rpi].data =
1092 im->gdes[ptr].data + im->gdes[ptr].ds;
1093 im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
1094 im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
1096 /* backoff the *.data ptr; this is done so
1097 * rpncalc() function doesn't have to treat
1098 * the first case differently
1100 } /* if ds_cnt != 0 */
1101 } /* if OP_VARIABLE */
1102 } /* loop through all rpi */
1104 /* move the data pointers to the correct period */
1105 for (rpi = 0; im->gdes[gdi].rpnp[rpi].op != OP_END; rpi++) {
1106 if (im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
1107 im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER) {
1108 long ptr = im->gdes[gdi].rpnp[rpi].ptr;
1110 im->gdes[gdi].start - im->gdes[ptr].start;
1113 im->gdes[gdi].rpnp[rpi].data +=
1114 (diff / im->gdes[ptr].step) *
1115 im->gdes[ptr].ds_cnt;
1119 if (steparray == NULL) {
1120 rrd_set_error("rpn expressions without DEF"
1121 " or CDEF variables are not supported");
1122 rpnstack_free(&rpnstack);
1125 steparray[stepcnt] = 0;
1126 /* Now find the resulting step. All steps in all
1127 * used RRAs have to be visited
1129 im->gdes[gdi].step = lcd(steparray);
1131 if ((im->gdes[gdi].data = (rrd_value_t*)malloc(((im->gdes[gdi].end -
1132 im->gdes[gdi].start)
1133 / im->gdes[gdi].step)
1134 * sizeof(double))) == NULL) {
1135 rrd_set_error("malloc im->gdes[gdi].data");
1136 rpnstack_free(&rpnstack);
1140 /* Step through the new cdef results array and
1141 * calculate the values
1143 for (now = im->gdes[gdi].start + im->gdes[gdi].step;
1144 now <= im->gdes[gdi].end; now += im->gdes[gdi].step) {
1145 rpnp_t *rpnp = im->gdes[gdi].rpnp;
1147 /* 3rd arg of rpn_calc is for OP_VARIABLE lookups;
1148 * in this case we are advancing by timesteps;
1149 * we use the fact that time_t is a synonym for long
1151 if (rpn_calc(rpnp, &rpnstack, (long) now,
1152 im->gdes[gdi].data, ++dataidx) == -1) {
1153 /* rpn_calc sets the error string */
1154 rpnstack_free(&rpnstack);
1157 } /* enumerate over time steps within a CDEF */
1162 } /* enumerate over CDEFs */
1163 rpnstack_free(&rpnstack);
1167 /* from http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm */
1168 /* yes we are loosing precision by doing tos with floats instead of doubles
1169 but it seems more stable this way. */
1171 static int AlmostEqual2sComplement(
1177 int aInt = *(int *) &A;
1178 int bInt = *(int *) &B;
1181 /* Make sure maxUlps is non-negative and small enough that the
1182 default NAN won't compare as equal to anything. */
1184 /* assert(maxUlps > 0 && maxUlps < 4 * 1024 * 1024); */
1186 /* Make aInt lexicographically ordered as a twos-complement int */
1189 aInt = 0x80000000l - aInt;
1191 /* Make bInt lexicographically ordered as a twos-complement int */
1194 bInt = 0x80000000l - bInt;
1196 intDiff = abs(aInt - bInt);
1198 if (intDiff <= maxUlps)
1204 /* massage data so, that we get one value for each x coordinate in the graph */
1209 double pixstep = (double) (im->end - im->start)
1210 / (double) im->xsize; /* how much time
1211 passes in one pixel */
1213 double minval = DNAN, maxval = DNAN;
1215 unsigned long gr_time;
1217 /* memory for the processed data */
1218 for (i = 0; i < im->gdes_c; i++) {
1219 if ((im->gdes[i].gf == GF_LINE) ||
1220 (im->gdes[i].gf == GF_AREA) || (im->gdes[i].gf == GF_TICK)) {
1221 if ((im->gdes[i].p_data = (rrd_value_t*)malloc((im->xsize + 1)
1222 * sizeof(rrd_value_t))) == NULL) {
1223 rrd_set_error("malloc data_proc");
1229 for (i = 0; i < im->xsize; i++) { /* for each pixel */
1232 gr_time = im->start + pixstep * i; /* time of the current step */
1235 for (ii = 0; ii < im->gdes_c; ii++) {
1238 switch (im->gdes[ii].gf) {
1242 if (!im->gdes[ii].stack)
1244 value = im->gdes[ii].yrule;
1245 if (isnan(value) || (im->gdes[ii].gf == GF_TICK)) {
1246 /* The time of the data doesn't necessarily match
1247 ** the time of the graph. Beware.
1249 vidx = im->gdes[ii].vidx;
1250 if (im->gdes[vidx].gf == GF_VDEF) {
1251 value = im->gdes[vidx].vf.val;
1253 if (((long int) gr_time >=
1254 (long int) im->gdes[vidx].start)
1255 && ((long int) gr_time <=
1256 (long int) im->gdes[vidx].end)) {
1257 value = im->gdes[vidx].data[(unsigned long)
1263 im->gdes[vidx].step)
1264 * im->gdes[vidx].ds_cnt +
1271 if (!isnan(value)) {
1273 im->gdes[ii].p_data[i] = paintval;
1274 /* GF_TICK: the data values are not
1275 ** relevant for min and max
1277 if (finite(paintval) && im->gdes[ii].gf != GF_TICK) {
1278 if ((isnan(minval) || paintval < minval) &&
1279 !(im->logarithmic && paintval <= 0.0))
1281 if (isnan(maxval) || paintval > maxval)
1285 im->gdes[ii].p_data[i] = DNAN;
1290 ("STACK should already be turned into LINE or AREA here");
1299 /* if min or max have not been asigned a value this is because
1300 there was no data in the graph ... this is not good ...
1301 lets set these to dummy values then ... */
1303 if (im->logarithmic) {
1304 if (isnan(minval) || isnan(maxval) || maxval <= 0) {
1305 minval = 0.0; /* catching this right away below */
1308 /* in logarithm mode, where minval is smaller or equal
1309 to 0 make the beast just way smaller than maxval */
1311 minval = maxval / 10e8;
1314 if (isnan(minval) || isnan(maxval)) {
1320 /* adjust min and max values given by the user */
1321 /* for logscale we add something on top */
1322 if (isnan(im->minval)
1323 || ((!im->rigid) && im->minval > minval)
1325 if (im->logarithmic)
1326 im->minval = minval / 2.0;
1328 im->minval = minval;
1330 if (isnan(im->maxval)
1331 || (!im->rigid && im->maxval < maxval)
1333 if (im->logarithmic)
1334 im->maxval = maxval * 2.0;
1336 im->maxval = maxval;
1339 /* make sure min is smaller than max */
1340 if (im->minval > im->maxval) {
1342 im->minval = 0.99 * im->maxval;
1344 im->minval = 1.01 * im->maxval;
1347 /* make sure min and max are not equal */
1348 if (AlmostEqual2sComplement(im->minval, im->maxval, 4)) {
1354 /* make sure min and max are not both zero */
1355 if (AlmostEqual2sComplement(im->maxval, 0, 4)) {
1364 /* identify the point where the first gridline, label ... gets placed */
1366 time_t find_first_time(
1367 time_t start, /* what is the initial time */
1368 enum tmt_en baseint, /* what is the basic interval */
1369 long basestep /* how many if these do we jump a time */
1374 localtime_r(&start, &tm);
1378 tm. tm_sec -= tm.tm_sec % basestep;
1383 tm. tm_min -= tm.tm_min % basestep;
1389 tm. tm_hour -= tm.tm_hour % basestep;
1393 /* we do NOT look at the basestep for this ... */
1400 /* we do NOT look at the basestep for this ... */
1404 tm. tm_mday -= tm.tm_wday - 1; /* -1 because we want the monday */
1406 if (tm.tm_wday == 0)
1407 tm. tm_mday -= 7; /* we want the *previous* monday */
1415 tm. tm_mon -= tm.tm_mon % basestep;
1426 tm.tm_year + 1900) %basestep;
1432 /* identify the point where the next gridline, label ... gets placed */
1433 time_t find_next_time(
1434 time_t current, /* what is the initial time */
1435 enum tmt_en baseint, /* what is the basic interval */
1436 long basestep /* how many if these do we jump a time */
1442 localtime_r(¤t, &tm);
1447 tm. tm_sec += basestep;
1451 tm. tm_min += basestep;
1455 tm. tm_hour += basestep;
1459 tm. tm_mday += basestep;
1463 tm. tm_mday += 7 * basestep;
1467 tm. tm_mon += basestep;
1471 tm. tm_year += basestep;
1473 madetime = mktime(&tm);
1474 } while (madetime == -1); /* this is necessary to skip impssible times
1475 like the daylight saving time skips */
1481 /* calculate values required for PRINT and GPRINT functions */
1486 long i, ii, validsteps;
1489 int graphelement = 0;
1492 double magfact = -1;
1497 /* wow initializing tmvdef is quite a task :-) */
1498 time_t now = time(NULL);
1500 localtime_r(&now, &tmvdef);
1501 for (i = 0; i < im->gdes_c; i++) {
1502 vidx = im->gdes[i].vidx;
1503 switch (im->gdes[i].gf) {
1506 /* PRINT and GPRINT can now print VDEF generated values.
1507 * There's no need to do any calculations on them as these
1508 * calculations were already made.
1510 if (im->gdes[vidx].gf == GF_VDEF) { /* simply use vals */
1511 printval = im->gdes[vidx].vf.val;
1512 localtime_r(&im->gdes[vidx].vf.when, &tmvdef);
1513 } else { /* need to calculate max,min,avg etcetera */
1514 max_ii = ((im->gdes[vidx].end - im->gdes[vidx].start)
1515 / im->gdes[vidx].step * im->gdes[vidx].ds_cnt);
1518 for (ii = im->gdes[vidx].ds;
1519 ii < max_ii; ii += im->gdes[vidx].ds_cnt) {
1520 if (!finite(im->gdes[vidx].data[ii]))
1522 if (isnan(printval)) {
1523 printval = im->gdes[vidx].data[ii];
1528 switch (im->gdes[i].cf) {
1532 case CF_DEVSEASONAL:
1536 printval += im->gdes[vidx].data[ii];
1539 printval = min(printval, im->gdes[vidx].data[ii]);
1543 printval = max(printval, im->gdes[vidx].data[ii]);
1546 printval = im->gdes[vidx].data[ii];
1549 if (im->gdes[i].cf == CF_AVERAGE || im->gdes[i].cf > CF_LAST) {
1550 if (validsteps > 1) {
1551 printval = (printval / validsteps);
1554 } /* prepare printval */
1556 if ((percent_s = strstr(im->gdes[i].format, "%S")) != NULL) {
1557 /* Magfact is set to -1 upon entry to print_calc. If it
1558 * is still less than 0, then we need to run auto_scale.
1559 * Otherwise, put the value into the correct units. If
1560 * the value is 0, then do not set the symbol or magnification
1561 * so next the calculation will be performed again. */
1562 if (magfact < 0.0) {
1563 auto_scale(im, &printval, &si_symb, &magfact);
1564 if (printval == 0.0)
1567 printval /= magfact;
1569 *(++percent_s) = 's';
1570 } else if (strstr(im->gdes[i].format, "%s") != NULL) {
1571 auto_scale(im, &printval, &si_symb, &magfact);
1574 if (im->gdes[i].gf == GF_PRINT) {
1575 rrd_infoval_t prline;
1577 if (im->gdes[i].strftm) {
1578 prline.u_str = (char*)malloc((FMT_LEG_LEN + 2) * sizeof(char));
1579 strftime(prline.u_str,
1580 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1581 } else if (bad_format(im->gdes[i].format)) {
1583 ("bad format for PRINT in '%s'", im->gdes[i].format);
1587 sprintf_alloc(im->gdes[i].format, printval, si_symb);
1591 ("print[%ld]", prline_cnt++), RD_I_STR, prline);
1596 if (im->gdes[i].strftm) {
1597 strftime(im->gdes[i].legend,
1598 FMT_LEG_LEN, im->gdes[i].format, &tmvdef);
1600 if (bad_format(im->gdes[i].format)) {
1602 ("bad format for GPRINT in '%s'",
1603 im->gdes[i].format);
1606 #ifdef HAVE_SNPRINTF
1607 snprintf(im->gdes[i].legend,
1609 im->gdes[i].format, printval, si_symb);
1611 sprintf(im->gdes[i].legend,
1612 im->gdes[i].format, printval, si_symb);
1624 if (isnan(im->gdes[i].yrule)) { /* we must set this here or the legend printer can not decide to print the legend */
1625 im->gdes[i].yrule = im->gdes[vidx].vf.val;
1630 if (im->gdes[i].xrule == 0) { /* again ... the legend printer needs it */
1631 im->gdes[i].xrule = im->gdes[vidx].vf.when;
1640 #ifdef WITH_PIECHART
1648 ("STACK should already be turned into LINE or AREA here");
1653 return graphelement;
1658 /* place legends with color spots */
1664 int interleg = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1665 int border = im->text_prop[TEXT_PROP_LEGEND].size * 2.0;
1666 int fill = 0, fill_last;
1667 double legendwidth; // = im->ximg - 2 * border;
1669 double leg_x = border;
1670 int leg_y = 0; //im->yimg;
1671 int leg_y_prev = 0; // im->yimg;
1674 int i, ii, mark = 0;
1675 char default_txtalign = TXA_JUSTIFIED; /*default line orientation */
1678 char saved_legend[FMT_LEG_LEN + 5];
1684 legendwidth = im->legendwidth - 2 * border;
1688 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
1689 if ((legspace = (int*)malloc(im->gdes_c * sizeof(int))) == NULL) {
1690 rrd_set_error("malloc for legspace");
1694 for (i = 0; i < im->gdes_c; i++) {
1695 char prt_fctn; /*special printfunctions */
1697 strcpy(saved_legend, im->gdes[i].legend);
1701 /* hide legends for rules which are not displayed */
1702 if (im->gdes[i].gf == GF_TEXTALIGN) {
1703 default_txtalign = im->gdes[i].txtalign;
1706 if (!(im->extra_flags & FORCE_RULES_LEGEND)) {
1707 if (im->gdes[i].gf == GF_HRULE
1708 && (im->gdes[i].yrule <
1709 im->minval || im->gdes[i].yrule > im->maxval))
1710 im->gdes[i].legend[0] = '\0';
1711 if (im->gdes[i].gf == GF_VRULE
1712 && (im->gdes[i].xrule <
1713 im->start || im->gdes[i].xrule > im->end))
1714 im->gdes[i].legend[0] = '\0';
1717 /* turn \\t into tab */
1718 while ((tab = strstr(im->gdes[i].legend, "\\t"))) {
1719 memmove(tab, tab + 1, strlen(tab));
1723 leg_cc = strlen(im->gdes[i].legend);
1724 /* is there a controle code at the end of the legend string ? */
1725 if (leg_cc >= 2 && im->gdes[i].legend[leg_cc - 2] == '\\') {
1726 prt_fctn = im->gdes[i].legend[leg_cc - 1];
1728 im->gdes[i].legend[leg_cc] = '\0';
1732 /* only valid control codes */
1733 if (prt_fctn != 'l' && prt_fctn != 'n' && /* a synonym for l */
1737 prt_fctn != 's' && prt_fctn != '\0' && prt_fctn != 'g') {
1740 ("Unknown control code at the end of '%s\\%c'",
1741 im->gdes[i].legend, prt_fctn);
1745 if (prt_fctn == 'n') {
1749 /* remove exess space from the end of the legend for \g */
1750 while (prt_fctn == 'g' &&
1751 leg_cc > 0 && im->gdes[i].legend[leg_cc - 1] == ' ') {
1753 im->gdes[i].legend[leg_cc] = '\0';
1758 /* no interleg space if string ends in \g */
1759 legspace[i] = (prt_fctn == 'g' ? 0 : interleg);
1761 fill += legspace[i];
1764 gfx_get_text_width(im,
1770 im->tabwidth, im->gdes[i].legend);
1775 /* who said there was a special tag ... ? */
1776 if (prt_fctn == 'g') {
1780 if (prt_fctn == '\0') {
1781 if(calc_width && (fill > legendwidth)){
1784 if (i == im->gdes_c - 1 || fill > legendwidth) {
1785 /* just one legend item is left right or center */
1786 switch (default_txtalign) {
1801 /* is it time to place the legends ? */
1802 if (fill > legendwidth) {
1810 if (leg_c == 1 && prt_fctn == 'j') {
1815 if (prt_fctn != '\0') {
1817 if (leg_c >= 2 && prt_fctn == 'j') {
1818 glue = (double)(legendwidth - fill) / (double)(leg_c - 1);
1822 if (prt_fctn == 'c')
1823 leg_x = (double)(legendwidth - fill) / 2.0;
1824 if (prt_fctn == 'r')
1825 leg_x = legendwidth - fill - border;
1826 for (ii = mark; ii <= i; ii++) {
1827 if (im->gdes[ii].legend[0] == '\0')
1828 continue; /* skip empty legends */
1829 im->gdes[ii].leg_x = leg_x;
1830 im->gdes[ii].leg_y = leg_y + border;
1832 (double)gfx_get_text_width(im, leg_x,
1837 im->tabwidth, im->gdes[ii].legend)
1838 +(double)legspace[ii]
1842 if (leg_x > border || prt_fctn == 's')
1843 leg_y += im->text_prop[TEXT_PROP_LEGEND].size * 1.8;
1844 if (prt_fctn == 's')
1845 leg_y -= im->text_prop[TEXT_PROP_LEGEND].size;
1847 if(calc_width && (fill > legendwidth)){
1856 strcpy(im->gdes[i].legend, saved_legend);
1861 im->legendwidth = legendwidth + 2 * border;
1864 im->legendheight = leg_y + border * 0.6;
1871 /* create a grid on the graph. it determines what to do
1872 from the values of xsize, start and end */
1874 /* the xaxis labels are determined from the number of seconds per pixel
1875 in the requested graph */
1877 int calc_horizontal_grid(
1885 int decimals, fractionals;
1887 im->ygrid_scale.labfact = 2;
1888 range = im->maxval - im->minval;
1889 scaledrange = range / im->magfact;
1890 /* does the scale of this graph make it impossible to put lines
1891 on it? If so, give up. */
1892 if (isnan(scaledrange)) {
1896 /* find grid spaceing */
1898 if (isnan(im->ygridstep)) {
1899 if (im->extra_flags & ALTYGRID) {
1900 /* find the value with max number of digits. Get number of digits */
1903 (max(fabs(im->maxval), fabs(im->minval)) *
1904 im->viewfactor / im->magfact));
1905 if (decimals <= 0) /* everything is small. make place for zero */
1907 im->ygrid_scale.gridstep =
1909 floor(log10(range * im->viewfactor / im->magfact))) /
1910 im->viewfactor * im->magfact;
1911 if (im->ygrid_scale.gridstep == 0) /* range is one -> 0.1 is reasonable scale */
1912 im->ygrid_scale.gridstep = 0.1;
1913 /* should have at least 5 lines but no more then 15 */
1914 if (range / im->ygrid_scale.gridstep < 5
1915 && im->ygrid_scale.gridstep >= 30)
1916 im->ygrid_scale.gridstep /= 10;
1917 if (range / im->ygrid_scale.gridstep > 15)
1918 im->ygrid_scale.gridstep *= 10;
1919 if (range / im->ygrid_scale.gridstep > 5) {
1920 im->ygrid_scale.labfact = 1;
1921 if (range / im->ygrid_scale.gridstep > 8
1922 || im->ygrid_scale.gridstep <
1923 1.8 * im->text_prop[TEXT_PROP_AXIS].size)
1924 im->ygrid_scale.labfact = 2;
1926 im->ygrid_scale.gridstep /= 5;
1927 im->ygrid_scale.labfact = 5;
1931 (im->ygrid_scale.gridstep *
1932 (double) im->ygrid_scale.labfact * im->viewfactor /
1934 if (fractionals < 0) { /* small amplitude. */
1935 int len = decimals - fractionals + 1;
1937 if (im->unitslength < len + 2)
1938 im->unitslength = len + 2;
1939 sprintf(im->ygrid_scale.labfmt,
1941 -fractionals, (im->symbol != ' ' ? " %c" : ""));
1943 int len = decimals + 1;
1945 if (im->unitslength < len + 2)
1946 im->unitslength = len + 2;
1947 sprintf(im->ygrid_scale.labfmt,
1948 "%%%d.0f%s", len, (im->symbol != ' ' ? " %c" : ""));
1950 } else { /* classic rrd grid */
1951 for (i = 0; ylab[i].grid > 0; i++) {
1952 pixel = im->ysize / (scaledrange / ylab[i].grid);
1958 for (i = 0; i < 4; i++) {
1959 if (pixel * ylab[gridind].lfac[i] >=
1960 1.8 * im->text_prop[TEXT_PROP_AXIS].size) {
1961 im->ygrid_scale.labfact = ylab[gridind].lfac[i];
1966 im->ygrid_scale.gridstep = ylab[gridind].grid * im->magfact;
1969 im->ygrid_scale.gridstep = im->ygridstep;
1970 im->ygrid_scale.labfact = im->ylabfact;
1975 int draw_horizontal_grid(
1981 char graph_label[100];
1983 double X0 = im->xorigin;
1984 double X1 = im->xorigin + im->xsize;
1985 int sgrid = (int) (im->minval / im->ygrid_scale.gridstep - 1);
1986 int egrid = (int) (im->maxval / im->ygrid_scale.gridstep + 1);
1988 double second_axis_magfact = 0;
1989 char *second_axis_symb = "";
1992 im->ygrid_scale.gridstep /
1993 (double) im->magfact * (double) im->viewfactor;
1994 MaxY = scaledstep * (double) egrid;
1995 for (i = sgrid; i <= egrid; i++) {
1997 im->ygrid_scale.gridstep * i);
1999 im->ygrid_scale.gridstep * (i + 1));
2001 if (floor(Y0 + 0.5) >=
2002 im->yorigin - im->ysize && floor(Y0 + 0.5) <= im->yorigin) {
2003 /* Make sure at least 2 grid labels are shown, even if it doesn't agree
2004 with the chosen settings. Add a label if required by settings, or if
2005 there is only one label so far and the next grid line is out of bounds. */
2006 if (i % im->ygrid_scale.labfact == 0
2008 && (YN < im->yorigin - im->ysize || YN > im->yorigin))) {
2009 if (im->symbol == ' ') {
2010 if (im->extra_flags & ALTYGRID) {
2011 sprintf(graph_label,
2012 im->ygrid_scale.labfmt,
2013 scaledstep * (double) i);
2016 sprintf(graph_label, "%4.1f",
2017 scaledstep * (double) i);
2019 sprintf(graph_label, "%4.0f",
2020 scaledstep * (double) i);
2024 char sisym = (i == 0 ? ' ' : im->symbol);
2026 if (im->extra_flags & ALTYGRID) {
2027 sprintf(graph_label,
2028 im->ygrid_scale.labfmt,
2029 scaledstep * (double) i, sisym);
2032 sprintf(graph_label, "%4.1f %c",
2033 scaledstep * (double) i, sisym);
2035 sprintf(graph_label, "%4.0f %c",
2036 scaledstep * (double) i, sisym);
2041 if (im->second_axis_scale != 0){
2042 char graph_label_right[100];
2043 double sval = im->ygrid_scale.gridstep*(double)i*im->second_axis_scale+im->second_axis_shift;
2044 if (im->second_axis_format[0] == '\0'){
2045 if (!second_axis_magfact){
2046 double dummy = im->ygrid_scale.gridstep*(double)(sgrid+egrid)/2.0*im->second_axis_scale+im->second_axis_shift;
2047 auto_scale(im,&dummy,&second_axis_symb,&second_axis_magfact);
2049 sval /= second_axis_magfact;
2052 sprintf(graph_label_right,"%5.1f %s",sval,second_axis_symb);
2054 sprintf(graph_label_right,"%5.0f %s",sval,second_axis_symb);
2058 sprintf(graph_label_right,im->second_axis_format,sval);
2062 im->graph_col[GRC_FONT],
2063 im->text_prop[TEXT_PROP_AXIS].font_desc,
2064 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2065 graph_label_right );
2071 text_prop[TEXT_PROP_AXIS].
2073 im->graph_col[GRC_FONT],
2075 text_prop[TEXT_PROP_AXIS].
2078 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2079 gfx_line(im, X0 - 2, Y0, X0, Y0,
2080 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2081 gfx_line(im, X1, Y0, X1 + 2, Y0,
2082 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2083 gfx_dashed_line(im, X0 - 2, Y0,
2089 im->grid_dash_on, im->grid_dash_off);
2090 } else if (!(im->extra_flags & NOMINOR)) {
2093 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2094 gfx_line(im, X1, Y0, X1 + 2, Y0,
2095 GRIDWIDTH, im->graph_col[GRC_GRID]);
2096 gfx_dashed_line(im, X0 - 1, Y0,
2100 graph_col[GRC_GRID],
2101 im->grid_dash_on, im->grid_dash_off);
2108 /* this is frexp for base 10 */
2119 iexp = floor(log((double)fabs(x)) / log((double)10));
2120 mnt = x / pow(10.0, iexp);
2123 mnt = x / pow(10.0, iexp);
2130 /* logaritmic horizontal grid */
2131 int horizontal_log_grid(
2135 double yloglab[][10] = {
2137 1.0, 10., 0.0, 0.0, 0.0, 0.0, 0.0,
2139 1.0, 5.0, 10., 0.0, 0.0, 0.0, 0.0,
2141 1.0, 2.0, 5.0, 7.0, 10., 0.0, 0.0,
2158 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* last line */
2160 int i, j, val_exp, min_exp;
2161 double nex; /* number of decades in data */
2162 double logscale; /* scale in logarithmic space */
2163 int exfrac = 1; /* decade spacing */
2164 int mid = -1; /* row in yloglab for major grid */
2165 double mspac; /* smallest major grid spacing (pixels) */
2166 int flab; /* first value in yloglab to use */
2167 double value, tmp, pre_value;
2169 char graph_label[100];
2171 nex = log10(im->maxval / im->minval);
2172 logscale = im->ysize / nex;
2173 /* major spacing for data with high dynamic range */
2174 while (logscale * exfrac < 3 * im->text_prop[TEXT_PROP_LEGEND].size) {
2181 /* major spacing for less dynamic data */
2183 /* search best row in yloglab */
2185 for (i = 0; yloglab[mid][i + 1] < 10.0; i++);
2186 mspac = logscale * log10(10.0 / yloglab[mid][i]);
2189 2 * im->text_prop[TEXT_PROP_LEGEND].size && yloglab[mid][0] > 0);
2192 /* find first value in yloglab */
2194 yloglab[mid][flab] < 10
2195 && frexp10(im->minval, &tmp) > yloglab[mid][flab]; flab++);
2196 if (yloglab[mid][flab] == 10.0) {
2201 if (val_exp % exfrac)
2202 val_exp += abs(-val_exp % exfrac);
2204 X1 = im->xorigin + im->xsize;
2209 value = yloglab[mid][flab] * pow(10.0, val_exp);
2210 if (AlmostEqual2sComplement(value, pre_value, 4))
2211 break; /* it seems we are not converging */
2213 Y0 = ytr(im, value);
2214 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2216 /* major grid line */
2218 X0 - 2, Y0, X0, Y0, MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2219 gfx_line(im, X1, Y0, X1 + 2, Y0,
2220 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2221 gfx_dashed_line(im, X0 - 2, Y0,
2226 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2228 if (im->extra_flags & FORCE_UNITS_SI) {
2233 scale = floor(val_exp / 3.0);
2235 pvalue = pow(10.0, val_exp % 3);
2237 pvalue = pow(10.0, ((val_exp + 1) % 3) + 2);
2238 pvalue *= yloglab[mid][flab];
2239 if (((scale + si_symbcenter) < (int) sizeof(si_symbol))
2240 && ((scale + si_symbcenter) >= 0))
2241 symbol = si_symbol[scale + si_symbcenter];
2244 sprintf(graph_label, "%3.0f %c", pvalue, symbol);
2246 sprintf(graph_label, "%3.0e", value);
2248 if (im->second_axis_scale != 0){
2249 char graph_label_right[100];
2250 double sval = value*im->second_axis_scale+im->second_axis_shift;
2251 if (im->second_axis_format[0] == '\0'){
2252 if (im->extra_flags & FORCE_UNITS_SI) {
2255 auto_scale(im,&sval,&symb,&mfac);
2256 sprintf(graph_label_right,"%4.0f %s", sval,symb);
2259 sprintf(graph_label_right,"%3.0e", sval);
2263 sprintf(graph_label_right,im->second_axis_format,sval);
2268 im->graph_col[GRC_FONT],
2269 im->text_prop[TEXT_PROP_AXIS].font_desc,
2270 im->tabwidth,0.0, GFX_H_LEFT, GFX_V_CENTER,
2271 graph_label_right );
2277 text_prop[TEXT_PROP_AXIS].
2279 im->graph_col[GRC_FONT],
2281 text_prop[TEXT_PROP_AXIS].
2284 GFX_H_RIGHT, GFX_V_CENTER, graph_label);
2286 if (mid < 4 && exfrac == 1) {
2287 /* find first and last minor line behind current major line
2288 * i is the first line and j tha last */
2290 min_exp = val_exp - 1;
2291 for (i = 1; yloglab[mid][i] < 10.0; i++);
2292 i = yloglab[mid][i - 1] + 1;
2296 i = yloglab[mid][flab - 1] + 1;
2297 j = yloglab[mid][flab];
2300 /* draw minor lines below current major line */
2301 for (; i < j; i++) {
2303 value = i * pow(10.0, min_exp);
2304 if (value < im->minval)
2306 Y0 = ytr(im, value);
2307 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2312 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2313 gfx_line(im, X1, Y0, X1 + 2, Y0,
2314 GRIDWIDTH, im->graph_col[GRC_GRID]);
2315 gfx_dashed_line(im, X0 - 1, Y0,
2319 graph_col[GRC_GRID],
2320 im->grid_dash_on, im->grid_dash_off);
2322 } else if (exfrac > 1) {
2323 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2324 value = pow(10.0, i);
2325 if (value < im->minval)
2327 Y0 = ytr(im, value);
2328 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2333 X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2334 gfx_line(im, X1, Y0, X1 + 2, Y0,
2335 GRIDWIDTH, im->graph_col[GRC_GRID]);
2336 gfx_dashed_line(im, X0 - 1, Y0,
2340 graph_col[GRC_GRID],
2341 im->grid_dash_on, im->grid_dash_off);
2346 if (yloglab[mid][++flab] == 10.0) {
2352 /* draw minor lines after highest major line */
2353 if (mid < 4 && exfrac == 1) {
2354 /* find first and last minor line below current major line
2355 * i is the first line and j tha last */
2357 min_exp = val_exp - 1;
2358 for (i = 1; yloglab[mid][i] < 10.0; i++);
2359 i = yloglab[mid][i - 1] + 1;
2363 i = yloglab[mid][flab - 1] + 1;
2364 j = yloglab[mid][flab];
2367 /* draw minor lines below current major line */
2368 for (; i < j; i++) {
2370 value = i * pow(10.0, min_exp);
2371 if (value < im->minval)
2373 Y0 = ytr(im, value);
2374 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2378 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2379 gfx_line(im, X1, Y0, X1 + 2, Y0,
2380 GRIDWIDTH, im->graph_col[GRC_GRID]);
2381 gfx_dashed_line(im, X0 - 1, Y0,
2385 graph_col[GRC_GRID],
2386 im->grid_dash_on, im->grid_dash_off);
2389 /* fancy minor gridlines */
2390 else if (exfrac > 1) {
2391 for (i = val_exp - exfrac / 3 * 2; i < val_exp; i += exfrac / 3) {
2392 value = pow(10.0, i);
2393 if (value < im->minval)
2395 Y0 = ytr(im, value);
2396 if (floor(Y0 + 0.5) <= im->yorigin - im->ysize)
2400 X0 - 2, Y0, X0, Y0, GRIDWIDTH, im->graph_col[GRC_GRID]);
2401 gfx_line(im, X1, Y0, X1 + 2, Y0,
2402 GRIDWIDTH, im->graph_col[GRC_GRID]);
2403 gfx_dashed_line(im, X0 - 1, Y0,
2407 graph_col[GRC_GRID],
2408 im->grid_dash_on, im->grid_dash_off);
2419 int xlab_sel; /* which sort of label and grid ? */
2420 time_t ti, tilab, timajor;
2422 char graph_label[100];
2423 double X0, Y0, Y1; /* points for filled graph and more */
2426 /* the type of time grid is determined by finding
2427 the number of seconds per pixel in the graph */
2428 if (im->xlab_user.minsec == -1) {
2429 factor = (im->end - im->start) / im->xsize;
2431 while (xlab[xlab_sel + 1].minsec !=
2432 -1 && xlab[xlab_sel + 1].minsec <= factor) {
2434 } /* pick the last one */
2435 while (xlab[xlab_sel - 1].minsec ==
2436 xlab[xlab_sel].minsec
2437 && xlab[xlab_sel].length > (im->end - im->start)) {
2439 } /* go back to the smallest size */
2440 im->xlab_user.gridtm = xlab[xlab_sel].gridtm;
2441 im->xlab_user.gridst = xlab[xlab_sel].gridst;
2442 im->xlab_user.mgridtm = xlab[xlab_sel].mgridtm;
2443 im->xlab_user.mgridst = xlab[xlab_sel].mgridst;
2444 im->xlab_user.labtm = xlab[xlab_sel].labtm;
2445 im->xlab_user.labst = xlab[xlab_sel].labst;
2446 im->xlab_user.precis = xlab[xlab_sel].precis;
2447 im->xlab_user.stst = xlab[xlab_sel].stst;
2450 /* y coords are the same for every line ... */
2452 Y1 = im->yorigin - im->ysize;
2453 /* paint the minor grid */
2454 if (!(im->extra_flags & NOMINOR)) {
2455 for (ti = find_first_time(im->start,
2463 find_first_time(im->start,
2470 find_next_time(ti, im->xlab_user.gridtm, im->xlab_user.gridst)
2472 /* are we inside the graph ? */
2473 if (ti < im->start || ti > im->end)
2475 while (timajor < ti) {
2476 timajor = find_next_time(timajor,
2479 mgridtm, im->xlab_user.mgridst);
2482 continue; /* skip as falls on major grid line */
2484 gfx_line(im, X0, Y1 - 2, X0, Y1,
2485 GRIDWIDTH, im->graph_col[GRC_GRID]);
2486 gfx_line(im, X0, Y0, X0, Y0 + 2,
2487 GRIDWIDTH, im->graph_col[GRC_GRID]);
2488 gfx_dashed_line(im, X0, Y0 + 1, X0,
2491 graph_col[GRC_GRID],
2492 im->grid_dash_on, im->grid_dash_off);
2496 /* paint the major grid */
2497 for (ti = find_first_time(im->start,
2505 ti = find_next_time(ti, im->xlab_user.mgridtm, im->xlab_user.mgridst)
2507 /* are we inside the graph ? */
2508 if (ti < im->start || ti > im->end)
2511 gfx_line(im, X0, Y1 - 2, X0, Y1,
2512 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2513 gfx_line(im, X0, Y0, X0, Y0 + 3,
2514 MGRIDWIDTH, im->graph_col[GRC_MGRID]);
2515 gfx_dashed_line(im, X0, Y0 + 3, X0,
2519 [GRC_MGRID], im->grid_dash_on, im->grid_dash_off);
2521 /* paint the labels below the graph */
2523 find_first_time(im->start -
2532 im->xlab_user.precis / 2;
2533 ti = find_next_time(ti, im->xlab_user.labtm, im->xlab_user.labst)
2535 tilab = ti + im->xlab_user.precis / 2; /* correct time for the label */
2536 /* are we inside the graph ? */
2537 if (tilab < im->start || tilab > im->end)
2540 localtime_r(&tilab, &tm);
2541 strftime(graph_label, 99, im->xlab_user.stst, &tm);
2543 # error "your libc has no strftime I guess we'll abort the exercise here."
2548 im->graph_col[GRC_FONT],
2550 text_prop[TEXT_PROP_AXIS].
2553 GFX_H_CENTER, GFX_V_TOP, graph_label);
2562 /* draw x and y axis */
2563 /* gfx_line ( im->canvas, im->xorigin+im->xsize,im->yorigin,
2564 im->xorigin+im->xsize,im->yorigin-im->ysize,
2565 GRIDWIDTH, im->graph_col[GRC_AXIS]);
2567 gfx_line ( im->canvas, im->xorigin,im->yorigin-im->ysize,
2568 im->xorigin+im->xsize,im->yorigin-im->ysize,
2569 GRIDWIDTH, im->graph_col[GRC_AXIS]); */
2571 gfx_line(im, im->xorigin - 4,
2573 im->xorigin + im->xsize +
2574 4, im->yorigin, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2575 gfx_line(im, im->xorigin,
2578 im->yorigin - im->ysize -
2579 4, MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2580 /* arrow for X and Y axis direction */
2581 gfx_new_area(im, im->xorigin + im->xsize + 2, im->yorigin - 3, im->xorigin + im->xsize + 2, im->yorigin + 3, im->xorigin + im->xsize + 7, im->yorigin, /* horyzontal */
2582 im->graph_col[GRC_ARROW]);
2584 gfx_new_area(im, im->xorigin - 3, im->yorigin - im->ysize - 2, im->xorigin + 3, im->yorigin - im->ysize - 2, im->xorigin, im->yorigin - im->ysize - 7, /* vertical */
2585 im->graph_col[GRC_ARROW]);
2587 if (im->second_axis_scale != 0){
2588 gfx_line ( im, im->xorigin+im->xsize,im->yorigin+4,
2589 im->xorigin+im->xsize,im->yorigin-im->ysize-4,
2590 MGRIDWIDTH, im->graph_col[GRC_AXIS]);
2592 im->xorigin+im->xsize-2, im->yorigin-im->ysize-2,
2593 im->xorigin+im->xsize+3, im->yorigin-im->ysize-2,
2594 im->xorigin+im->xsize, im->yorigin-im->ysize-7, /* LINEOFFSET */
2595 im->graph_col[GRC_ARROW]);
2606 double X0, Y0; /* points for filled graph and more */
2607 struct gfx_color_t water_color;
2609 if (im->draw_3d_border > 0) {
2610 /* draw 3d border */
2611 i = im->draw_3d_border;
2612 gfx_new_area(im, 0, im->yimg,
2613 i, im->yimg - i, i, i, im->graph_col[GRC_SHADEA]);
2614 gfx_add_point(im, im->ximg - i, i);
2615 gfx_add_point(im, im->ximg, 0);
2616 gfx_add_point(im, 0, 0);
2618 gfx_new_area(im, i, im->yimg - i,
2620 im->yimg - i, im->ximg - i, i, im->graph_col[GRC_SHADEB]);
2621 gfx_add_point(im, im->ximg, 0);
2622 gfx_add_point(im, im->ximg, im->yimg);
2623 gfx_add_point(im, 0, im->yimg);
2626 if (im->draw_x_grid == 1)
2628 if (im->draw_y_grid == 1) {
2629 if (im->logarithmic) {
2630 res = horizontal_log_grid(im);
2632 res = draw_horizontal_grid(im);
2635 /* dont draw horizontal grid if there is no min and max val */
2637 char *nodata = "No Data found";
2639 gfx_text(im, im->ximg / 2,
2642 im->graph_col[GRC_FONT],
2644 text_prop[TEXT_PROP_AXIS].
2647 GFX_H_CENTER, GFX_V_CENTER, nodata);
2651 /* yaxis unit description */
2652 if (im->ylegend[0] != '\0'){
2654 im->xOriginLegendY+10,
2656 im->graph_col[GRC_FONT],
2658 text_prop[TEXT_PROP_UNIT].
2661 RRDGRAPH_YLEGEND_ANGLE, GFX_H_CENTER, GFX_V_CENTER, im->ylegend);
2664 if (im->second_axis_legend[0] != '\0'){
2666 im->xOriginLegendY2+10,
2667 im->yOriginLegendY2,
2668 im->graph_col[GRC_FONT],
2669 im->text_prop[TEXT_PROP_UNIT].font_desc,
2671 RRDGRAPH_YLEGEND_ANGLE,
2672 GFX_H_CENTER, GFX_V_CENTER,
2673 im->second_axis_legend);
2678 im->xOriginTitle, im->yOriginTitle+6,
2679 im->graph_col[GRC_FONT],
2681 text_prop[TEXT_PROP_TITLE].
2683 im->tabwidth, 0.0, GFX_H_CENTER, GFX_V_TOP, im->title);
2684 /* rrdtool 'logo' */
2685 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
2686 water_color = im->graph_col[GRC_FONT];
2687 water_color.alpha = 0.3;
2688 double xpos = im->legendposition == EAST ? im->xOriginLegendY : im->ximg - 4;
2689 gfx_text(im, xpos, 5,
2692 text_prop[TEXT_PROP_WATERMARK].
2693 font_desc, im->tabwidth,
2694 -90, GFX_H_LEFT, GFX_V_TOP, "RRDTOOL / TOBI OETIKER");
2696 /* graph watermark */
2697 if (im->watermark[0] != '\0') {
2698 water_color = im->graph_col[GRC_FONT];
2699 water_color.alpha = 0.3;
2701 im->ximg / 2, im->yimg - 6,
2704 text_prop[TEXT_PROP_WATERMARK].
2705 font_desc, im->tabwidth, 0,
2706 GFX_H_CENTER, GFX_V_BOTTOM, im->watermark);
2710 if (!(im->extra_flags & NOLEGEND) && !(im->extra_flags & ONLY_GRAPH)) {
2711 for (i = 0; i < im->gdes_c; i++) {
2712 if (im->gdes[i].legend[0] == '\0')
2714 /* im->gdes[i].leg_y is the bottom of the legend */
2715 X0 = im->xOriginLegend + im->gdes[i].leg_x;
2716 Y0 = im->legenddirection == TOP_DOWN ? im->yOriginLegend + im->gdes[i].leg_y : im->yOriginLegend + im->legendheight - im->gdes[i].leg_y;
2717 gfx_text(im, X0, Y0,
2718 im->graph_col[GRC_FONT],
2721 [TEXT_PROP_LEGEND].font_desc,
2723 GFX_H_LEFT, GFX_V_BOTTOM, im->gdes[i].legend);
2724 /* The legend for GRAPH items starts with "M " to have
2725 enough space for the box */
2726 if (im->gdes[i].gf != GF_PRINT &&
2727 im->gdes[i].gf != GF_GPRINT && im->gdes[i].gf != GF_COMMENT) {
2731 boxH = gfx_get_text_width(im, 0,
2736 im->tabwidth, "o") * 1.2;
2738 /* shift the box up a bit */
2740 if (im->gdes[i].gf == GF_HRULE) { /* [-] */
2742 cairo_new_path(im->cr);
2743 cairo_set_line_width(im->cr, 1.0);
2746 X0 + boxH, Y0 - boxV / 2,
2747 1.0, im->gdes[i].col);
2749 } else if (im->gdes[i].gf == GF_VRULE) { /* [|] */
2751 cairo_new_path(im->cr);
2752 cairo_set_line_width(im->cr, 1.0);
2755 X0 + boxH / 2, Y0 - boxV,
2756 1.0, im->gdes[i].col);
2758 } else if (im->gdes[i].gf == GF_LINE) { /* [/] */
2760 cairo_new_path(im->cr);
2761 cairo_set_line_width(im->cr, im->gdes[i].linewidth);
2764 X0 + boxH, Y0 - boxV,
2765 im->gdes[i].linewidth, im->gdes[i].col);
2768 /* make sure transparent colors show up the same way as in the graph */
2771 X0, Y0, X0 + boxH, Y0, im->graph_col[GRC_BACK]);
2772 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2774 gfx_new_area(im, X0, Y0 - boxV, X0,
2775 Y0, X0 + boxH, Y0, im->gdes[i].col);
2776 gfx_add_point(im, X0 + boxH, Y0 - boxV);
2779 cairo_new_path(im->cr);
2780 cairo_set_line_width(im->cr, 1.0);
2783 gfx_line_fit(im, &X0, &Y0);
2784 gfx_line_fit(im, &X1, &Y1);
2785 cairo_move_to(im->cr, X0, Y0);
2786 cairo_line_to(im->cr, X1, Y0);
2787 cairo_line_to(im->cr, X1, Y1);
2788 cairo_line_to(im->cr, X0, Y1);
2789 cairo_close_path(im->cr);
2790 cairo_set_source_rgba(im->cr,
2791 im->graph_col[GRC_FRAME].red,
2792 im->graph_col[GRC_FRAME].green,
2793 im->graph_col[GRC_FRAME].blue,
2794 im->graph_col[GRC_FRAME].alpha);
2796 if (im->gdes[i].dash) {
2797 /* make box borders in legend dashed if the graph is dashed */
2801 cairo_set_dash(im->cr, dashes, 1, 0.0);
2803 cairo_stroke(im->cr);
2804 cairo_restore(im->cr);
2811 /*****************************************************
2812 * lazy check make sure we rely need to create this graph
2813 *****************************************************/
2820 struct stat imgstat;
2823 return 0; /* no lazy option */
2824 if (strlen(im->graphfile) == 0)
2825 return 0; /* inmemory option */
2826 if (stat(im->graphfile, &imgstat) != 0)
2827 return 0; /* can't stat */
2828 /* one pixel in the existing graph is more then what we would
2830 if (time(NULL) - imgstat.st_mtime > (im->end - im->start) / im->xsize)
2832 if ((fd = fopen(im->graphfile, "rb")) == NULL)
2833 return 0; /* the file does not exist */
2834 switch (im->imgformat) {
2836 size = PngSize(fd, &(im->ximg), &(im->yimg));
2846 int graph_size_location(
2851 /* The actual size of the image to draw is determined from
2852 ** several sources. The size given on the command line is
2853 ** the graph area but we need more as we have to draw labels
2854 ** and other things outside the graph area. If the option
2855 ** --full-size-mode is selected the size defines the total
2856 ** image size and the size available for the graph is
2860 /** +---+-----------------------------------+
2861 ** | y |...............graph title.........|
2862 ** | +---+-------------------------------+
2866 ** | s | x | main graph area |
2871 ** | l | b +-------------------------------+
2872 ** | e | l | x axis labels |
2873 ** +---+---+-------------------------------+
2874 ** |....................legends............|
2875 ** +---------------------------------------+
2877 ** +---------------------------------------+
2880 int Xvertical = 0, Xvertical2 = 0, Ytitle =
2881 0, Xylabel = 0, Xmain = 0, Ymain =
2882 0, Yxlabel = 0, Xspacing = 15, Yspacing = 15, Ywatermark = 4;
2884 // no legends and no the shall be plotted it's easy
2885 if (im->extra_flags & ONLY_GRAPH) {
2887 im->ximg = im->xsize;
2888 im->yimg = im->ysize;
2889 im->yorigin = im->ysize;
2894 if(im->watermark[0] != '\0') {
2895 Ywatermark = im->text_prop[TEXT_PROP_WATERMARK].size * 2;
2898 // calculate the width of the left vertical legend
2899 if (im->ylegend[0] != '\0') {
2900 Xvertical = im->text_prop[TEXT_PROP_UNIT].size * 2;
2903 // calculate the width of the right vertical legend
2904 if (im->second_axis_legend[0] != '\0') {
2905 Xvertical2 = im->text_prop[TEXT_PROP_UNIT].size * 2;
2908 Xvertical2 = Xspacing;
2911 if (im->title[0] != '\0') {
2912 /* The title is placed "inbetween" two text lines so it
2913 ** automatically has some vertical spacing. The horizontal
2914 ** spacing is added here, on each side.
2916 /* if necessary, reduce the font size of the title until it fits the image width */
2917 Ytitle = im->text_prop[TEXT_PROP_TITLE].size * 2.6 + 10;
2920 // we have no title; get a little clearing from the top
2921 Ytitle = 1.5 * Yspacing;
2925 if (im->draw_x_grid) {
2926 // calculate the height of the horizontal labelling
2927 Yxlabel = im->text_prop[TEXT_PROP_AXIS].size * 2.5;
2929 if (im->draw_y_grid || im->forceleftspace) {
2930 // calculate the width of the vertical labelling
2932 gfx_get_text_width(im, 0,
2933 im->text_prop[TEXT_PROP_AXIS].font_desc,
2934 im->tabwidth, "0") * im->unitslength;
2938 // add some space to the labelling
2939 Xylabel += Xspacing;
2941 /* If the legend is printed besides the graph the width has to be
2942 ** calculated first. Placing the legend north or south of the
2943 ** graph requires the width calculation first, so the legend is
2944 ** skipped for the moment.
2946 im->legendheight = 0;
2947 im->legendwidth = 0;
2948 if (!(im->extra_flags & NOLEGEND)) {
2949 if(im->legendposition == WEST || im->legendposition == EAST){
2950 if (leg_place(im, 1) == -1){
2956 if (im->extra_flags & FULL_SIZE_MODE) {
2958 /* The actual size of the image to draw has been determined by the user.
2959 ** The graph area is the space remaining after accounting for the legend,
2960 ** the watermark, the axis labels, and the title.
2962 im->ximg = im->xsize;
2963 im->yimg = im->ysize;
2967 /* Now calculate the total size. Insert some spacing where
2968 desired. im->xorigin and im->yorigin need to correspond
2969 with the lower left corner of the main graph area or, if
2970 this one is not set, the imaginary box surrounding the
2972 /* Initial size calculation for the main graph area */
2974 Xmain -= Xylabel;// + Xspacing;
2975 if((im->legendposition == WEST || im->legendposition == EAST) && !(im->extra_flags & NOLEGEND) ){
2976 Xmain -= im->legendwidth;// + Xspacing;
2978 if (im->second_axis_scale != 0){
2981 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
2985 Xmain -= Xvertical + Xvertical2;
2987 /* limit the remaining space to 0 */
2993 /* Putting the legend north or south, the height can now be calculated */
2994 if (!(im->extra_flags & NOLEGEND)) {
2995 if(im->legendposition == NORTH || im->legendposition == SOUTH){
2996 im->legendwidth = im->ximg;
2997 if (leg_place(im, 0) == -1){
3003 if( (im->legendposition == NORTH || im->legendposition == SOUTH) && !(im->extra_flags & NOLEGEND) ){
3004 Ymain -= Yxlabel + im->legendheight;
3010 /* reserve space for the title *or* some padding above the graph */
3013 /* reserve space for padding below the graph */
3014 if (im->extra_flags & NOLEGEND) {
3018 if (im->watermark[0] != '\0') {
3019 Ymain -= Ywatermark;
3021 /* limit the remaining height to 0 */
3026 } else { /* dimension options -width and -height refer to the dimensions of the main graph area */
3028 /* The actual size of the image to draw is determined from
3029 ** several sources. The size given on the command line is
3030 ** the graph area but we need more as we have to draw labels
3031 ** and other things outside the graph area.
3035 Xmain = im->xsize; // + Xspacing;
3039 im->ximg = Xmain + Xylabel;
3040 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3041 im->ximg += Xspacing;
3044 if( (im->legendposition == WEST || im->legendposition == EAST) && !(im->extra_flags & NOLEGEND) ){
3045 im->ximg += im->legendwidth;// + Xspacing;
3047 if (im->second_axis_scale != 0){
3048 im->ximg += Xylabel;
3051 im->ximg += Xvertical + Xvertical2;
3053 if (!(im->extra_flags & NOLEGEND)) {
3054 if(im->legendposition == NORTH || im->legendposition == SOUTH){
3055 im->legendwidth = im->ximg;
3056 if (leg_place(im, 0) == -1){
3062 im->yimg = Ymain + Yxlabel;
3063 if( (im->legendposition == NORTH || im->legendposition == SOUTH) && !(im->extra_flags & NOLEGEND) ){
3064 im->yimg += im->legendheight;
3067 /* reserve space for the title *or* some padding above the graph */
3071 im->yimg += 1.5 * Yspacing;
3073 /* reserve space for padding below the graph */
3074 if (im->extra_flags & NOLEGEND) {
3075 im->yimg += Yspacing;
3078 if (im->watermark[0] != '\0') {
3079 im->yimg += Ywatermark;
3084 /* In case of putting the legend in west or east position the first
3085 ** legend calculation might lead to wrong positions if some items
3086 ** are not aligned on the left hand side (e.g. centered) as the
3087 ** legendwidth wight have been increased after the item was placed.
3088 ** In this case the positions have to be recalculated.
3090 if (!(im->extra_flags & NOLEGEND)) {
3091 if(im->legendposition == WEST || im->legendposition == EAST){
3092 if (leg_place(im, 0) == -1){
3098 /* After calculating all dimensions
3099 ** it is now possible to calculate
3102 switch(im->legendposition){
3104 im->xOriginTitle = Xvertical + Xylabel + (im->xsize / 2);
3105 im->yOriginTitle = 0;
3107 im->xOriginLegend = 0;
3108 im->yOriginLegend = Ytitle;
3110 im->xOriginLegendY = 0;
3111 im->yOriginLegendY = Ytitle + im->legendheight + (Ymain / 2) + Yxlabel;
3113 im->xorigin = Xvertical + Xylabel;
3114 im->yorigin = Ytitle + im->legendheight + Ymain;
3116 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3117 if (im->second_axis_scale != 0){
3118 im->xOriginLegendY2 += Xylabel;
3120 im->yOriginLegendY2 = Ytitle + im->legendheight + (Ymain / 2) + Yxlabel;
3125 im->xOriginTitle = im->legendwidth + Xvertical + Xylabel + im->xsize / 2;
3126 im->yOriginTitle = 0;
3128 im->xOriginLegend = 0;
3129 im->yOriginLegend = Ytitle;
3131 im->xOriginLegendY = im->legendwidth;
3132 im->yOriginLegendY = Ytitle + (Ymain / 2);
3134 im->xorigin = im->legendwidth + Xvertical + Xylabel;
3135 im->yorigin = Ytitle + Ymain;
3137 im->xOriginLegendY2 = im->legendwidth + Xvertical + Xylabel + Xmain;
3138 if (im->second_axis_scale != 0){
3139 im->xOriginLegendY2 += Xylabel;
3141 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3146 im->xOriginTitle = Xvertical + Xylabel + im->xsize / 2;
3147 im->yOriginTitle = 0;
3149 im->xOriginLegend = 0;
3150 im->yOriginLegend = Ytitle + Ymain + Yxlabel;
3152 im->xOriginLegendY = 0;
3153 im->yOriginLegendY = Ytitle + (Ymain / 2);
3155 im->xorigin = Xvertical + Xylabel;
3156 im->yorigin = Ytitle + Ymain;
3158 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3159 if (im->second_axis_scale != 0){
3160 im->xOriginLegendY2 += Xylabel;
3162 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3167 im->xOriginTitle = Xvertical + Xylabel + im->xsize / 2;
3168 im->yOriginTitle = 0;
3170 im->xOriginLegend = Xvertical + Xylabel + Xmain + Xvertical2;
3171 if (im->second_axis_scale != 0){
3172 im->xOriginLegend += Xylabel;
3174 im->yOriginLegend = Ytitle;
3176 im->xOriginLegendY = 0;
3177 im->yOriginLegendY = Ytitle + (Ymain / 2);
3179 im->xorigin = Xvertical + Xylabel;
3180 im->yorigin = Ytitle + Ymain;
3182 im->xOriginLegendY2 = Xvertical + Xylabel + Xmain;
3183 if (im->second_axis_scale != 0){
3184 im->xOriginLegendY2 += Xylabel;
3186 im->yOriginLegendY2 = Ytitle + (Ymain / 2);
3188 if (!(im->extra_flags & NO_RRDTOOL_TAG)){
3189 im->xOriginTitle += Xspacing;
3190 im->xOriginLegend += Xspacing;
3191 im->xOriginLegendY += Xspacing;
3192 im->xorigin += Xspacing;
3193 im->xOriginLegendY2 += Xspacing;
3203 static cairo_status_t cairo_output(
3207 unsigned int length)
3209 image_desc_t *im = (image_desc_t*)closure;
3211 im->rendered_image =
3212 (unsigned char*)realloc(im->rendered_image, im->rendered_image_size + length);
3213 if (im->rendered_image == NULL)
3214 return CAIRO_STATUS_WRITE_ERROR;
3215 memcpy(im->rendered_image + im->rendered_image_size, data, length);
3216 im->rendered_image_size += length;
3217 return CAIRO_STATUS_SUCCESS;
3220 /* draw that picture thing ... */
3225 int lazy = lazy_check(im);
3226 double areazero = 0.0;
3227 graph_desc_t *lastgdes = NULL;
3230 // PangoFontMap *font_map = pango_cairo_font_map_get_default();
3232 /* pull the data from the rrd files ... */
3233 if (data_fetch(im) == -1)
3235 /* evaluate VDEF and CDEF operations ... */
3236 if (data_calc(im) == -1)
3238 /* calculate and PRINT and GPRINT definitions. We have to do it at
3239 * this point because it will affect the length of the legends
3240 * if there are no graph elements (i==0) we stop here ...
3241 * if we are lazy, try to quit ...
3247 /* if we want and can be lazy ... quit now */
3251 /**************************************************************
3252 *** Calculating sizes and locations became a bit confusing ***
3253 *** so I moved this into a separate function. ***
3254 **************************************************************/
3255 if (graph_size_location(im, i) == -1)
3258 info.u_cnt = im->xorigin;
3259 grinfo_push(im, sprintf_alloc("graph_left"), RD_I_CNT, info);
3260 info.u_cnt = im->yorigin - im->ysize;
3261 grinfo_push(im, sprintf_alloc("graph_top"), RD_I_CNT, info);
3262 info.u_cnt = im->xsize;
3263 grinfo_push(im, sprintf_alloc("graph_width"), RD_I_CNT, info);
3264 info.u_cnt = im->ysize;
3265 grinfo_push(im, sprintf_alloc("graph_height"), RD_I_CNT, info);
3266 info.u_cnt = im->ximg;
3267 grinfo_push(im, sprintf_alloc("image_width"), RD_I_CNT, info);
3268 info.u_cnt = im->yimg;
3269 grinfo_push(im, sprintf_alloc("image_height"), RD_I_CNT, info);
3270 info.u_cnt = im->start;
3271 grinfo_push(im, sprintf_alloc("graph_start"), RD_I_CNT, info);
3272 info.u_cnt = im->end;
3273 grinfo_push(im, sprintf_alloc("graph_end"), RD_I_CNT, info);
3275 /* if we want and can be lazy ... quit now */
3279 /* get actual drawing data and find min and max values */
3280 if (data_proc(im) == -1)
3282 if (!im->logarithmic) {
3286 /* identify si magnitude Kilo, Mega Giga ? */
3287 if (!im->rigid && !im->logarithmic)
3288 expand_range(im); /* make sure the upper and lower limit are
3291 info.u_val = im->minval;
3292 grinfo_push(im, sprintf_alloc("value_min"), RD_I_VAL, info);
3293 info.u_val = im->maxval;
3294 grinfo_push(im, sprintf_alloc("value_max"), RD_I_VAL, info);
3297 if (!calc_horizontal_grid(im))
3302 apply_gridfit(im); */
3303 /* the actual graph is created by going through the individual
3304 graph elements and then drawing them */
3305 cairo_surface_destroy(im->surface);
3306 switch (im->imgformat) {
3309 cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
3310 im->ximg * im->zoom,
3311 im->yimg * im->zoom);
3315 im->surface = strlen(im->graphfile)
3316 ? cairo_pdf_surface_create(im->graphfile, im->ximg * im->zoom,
3317 im->yimg * im->zoom)
3318 : cairo_pdf_surface_create_for_stream
3319 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3323 im->surface = strlen(im->graphfile)
3325 cairo_ps_surface_create(im->graphfile, im->ximg * im->zoom,
3326 im->yimg * im->zoom)
3327 : cairo_ps_surface_create_for_stream
3328 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3332 im->surface = strlen(im->graphfile)
3334 cairo_svg_surface_create(im->
3336 im->ximg * im->zoom, im->yimg * im->zoom)
3337 : cairo_svg_surface_create_for_stream
3338 (&cairo_output, im, im->ximg * im->zoom, im->yimg * im->zoom);
3339 cairo_svg_surface_restrict_to_version
3340 (im->surface, CAIRO_SVG_VERSION_1_1);
3343 cairo_destroy(im->cr);
3344 im->cr = cairo_create(im->surface);
3345 cairo_set_antialias(im->cr, im->graph_antialias);
3346 cairo_scale(im->cr, im->zoom, im->zoom);
3347 // pango_cairo_font_map_set_resolution(PANGO_CAIRO_FONT_MAP(font_map), 100);
3348 gfx_new_area(im, 0, 0, 0, im->yimg,
3349 im->ximg, im->yimg, im->graph_col[GRC_BACK]);
3350 gfx_add_point(im, im->ximg, 0);
3352 gfx_new_area(im, im->xorigin,
3355 im->xsize, im->yorigin,
3358 im->yorigin - im->ysize, im->graph_col[GRC_CANVAS]);
3359 gfx_add_point(im, im->xorigin, im->yorigin - im->ysize);
3361 cairo_rectangle(im->cr, im->xorigin, im->yorigin - im->ysize - 1.0,
3362 im->xsize, im->ysize + 2.0);
3364 if (im->minval > 0.0)
3365 areazero = im->minval;
3366 if (im->maxval < 0.0)
3367 areazero = im->maxval;
3368 for (i = 0; i < im->gdes_c; i++) {
3369 switch (im->gdes[i].gf) {
3383 for (ii = 0; ii < im->xsize; ii++) {
3384 if (!isnan(im->gdes[i].p_data[ii])
3385 && im->gdes[i].p_data[ii] != 0.0) {
3386 if (im->gdes[i].yrule > 0) {
3393 im->ysize, 1.0, im->gdes[i].col);
3394 } else if (im->gdes[i].yrule < 0) {
3397 im->yorigin - im->ysize - 1.0,
3399 im->yorigin - im->ysize -
3402 im->ysize, 1.0, im->gdes[i].col);
3409 /* fix data points at oo and -oo */
3410 for (ii = 0; ii < im->xsize; ii++) {
3411 if (isinf(im->gdes[i].p_data[ii])) {
3412 if (im->gdes[i].p_data[ii] > 0) {
3413 im->gdes[i].p_data[ii] = im->maxval;
3415 im->gdes[i].p_data[ii] = im->minval;
3421 /* *******************************************************
3426 -------|--t-1--t--------------------------------
3428 if we know the value at time t was a then
3429 we draw a square from t-1 to t with the value a.
3431 ********************************************************* */
3432 if (im->gdes[i].col.alpha != 0.0) {
3433 /* GF_LINE and friend */
3434 if (im->gdes[i].gf == GF_LINE) {
3435 double last_y = 0.0;
3439 cairo_new_path(im->cr);
3440 cairo_set_line_width(im->cr, im->gdes[i].linewidth);
3441 if (im->gdes[i].dash) {
3442 cairo_set_dash(im->cr,
3443 im->gdes[i].p_dashes,
3444 im->gdes[i].ndash, im->gdes[i].offset);
3447 for (ii = 1; ii < im->xsize; ii++) {
3448 if (isnan(im->gdes[i].p_data[ii])
3449 || (im->slopemode == 1
3450 && isnan(im->gdes[i].p_data[ii - 1]))) {
3455 last_y = ytr(im, im->gdes[i].p_data[ii]);
3456 if (im->slopemode == 0) {
3457 double x = ii - 1 + im->xorigin;
3460 gfx_line_fit(im, &x, &y);
3461 cairo_move_to(im->cr, x, y);
3462 x = ii + im->xorigin;
3464 gfx_line_fit(im, &x, &y);
3465 cairo_line_to(im->cr, x, y);
3467 double x = ii - 1 + im->xorigin;
3469 ytr(im, im->gdes[i].p_data[ii - 1]);
3470 gfx_line_fit(im, &x, &y);
3471 cairo_move_to(im->cr, x, y);
3472 x = ii + im->xorigin;
3474 gfx_line_fit(im, &x, &y);
3475 cairo_line_to(im->cr, x, y);
3479 double x1 = ii + im->xorigin;
3480 double y1 = ytr(im, im->gdes[i].p_data[ii]);
3482 if (im->slopemode == 0
3483 && !AlmostEqual2sComplement(y1, last_y, 4)) {
3484 double x = ii - 1 + im->xorigin;
3487 gfx_line_fit(im, &x, &y);
3488 cairo_line_to(im->cr, x, y);
3491 gfx_line_fit(im, &x1, &y1);
3492 cairo_line_to(im->cr, x1, y1);
3495 cairo_set_source_rgba(im->cr,
3501 col.blue, im->gdes[i].col.alpha);
3502 cairo_set_line_cap(im->cr, CAIRO_LINE_CAP_ROUND);
3503 cairo_set_line_join(im->cr, CAIRO_LINE_JOIN_ROUND);
3504 cairo_stroke(im->cr);
3505 cairo_restore(im->cr);
3509 (double *) malloc(sizeof(double) * im->xsize * 2);
3511 (double *) malloc(sizeof(double) * im->xsize * 2);
3513 (double *) malloc(sizeof(double) * im->xsize * 2);
3515 (double *) malloc(sizeof(double) * im->xsize * 2);
3518 for (ii = 0; ii <= im->xsize; ii++) {
3521 if (idxI > 0 && (drawem != 0 || ii == im->xsize)) {
3527 AlmostEqual2sComplement(foreY
3531 AlmostEqual2sComplement(foreY
3541 foreY[cntI], im->gdes[i].col);
3542 while (cntI < idxI) {
3547 AlmostEqual2sComplement(foreY
3551 AlmostEqual2sComplement(foreY
3558 gfx_add_point(im, foreX[cntI], foreY[cntI]);
3560 gfx_add_point(im, backX[idxI], backY[idxI]);
3566 AlmostEqual2sComplement(backY
3570 AlmostEqual2sComplement(backY
3577 gfx_add_point(im, backX[idxI], backY[idxI]);
3587 if (ii == im->xsize)
3589 if (im->slopemode == 0 && ii == 0) {
3592 if (isnan(im->gdes[i].p_data[ii])) {
3596 ytop = ytr(im, im->gdes[i].p_data[ii]);
3597 if (lastgdes && im->gdes[i].stack) {
3598 ybase = ytr(im, lastgdes->p_data[ii]);
3600 ybase = ytr(im, areazero);
3602 if (ybase == ytop) {
3608 double extra = ytop;
3613 if (im->slopemode == 0) {
3614 backY[++idxI] = ybase - 0.2;
3615 backX[idxI] = ii + im->xorigin - 1;
3616 foreY[idxI] = ytop + 0.2;
3617 foreX[idxI] = ii + im->xorigin - 1;
3619 backY[++idxI] = ybase - 0.2;
3620 backX[idxI] = ii + im->xorigin;
3621 foreY[idxI] = ytop + 0.2;
3622 foreX[idxI] = ii + im->xorigin;
3624 /* close up any remaining area */
3629 } /* else GF_LINE */
3631 /* if color != 0x0 */
3632 /* make sure we do not run into trouble when stacking on NaN */
3633 for (ii = 0; ii < im->xsize; ii++) {
3634 if (isnan(im->gdes[i].p_data[ii])) {
3635 if (lastgdes && (im->gdes[i].stack)) {
3636 im->gdes[i].p_data[ii] = lastgdes->p_data[ii];
3638 im->gdes[i].p_data[ii] = areazero;
3642 lastgdes = &(im->gdes[i]);
3646 ("STACK should already be turned into LINE or AREA here");
3651 cairo_reset_clip(im->cr);
3653 /* grid_paint also does the text */
3654 if (!(im->extra_flags & ONLY_GRAPH))
3656 if (!(im->extra_flags & ONLY_GRAPH))
3658 /* the RULES are the last thing to paint ... */
3659 for (i = 0; i < im->gdes_c; i++) {
3661 switch (im->gdes[i].gf) {
3663 if (im->gdes[i].yrule >= im->minval
3664 && im->gdes[i].yrule <= im->maxval) {
3666 if (im->gdes[i].dash) {
3667 cairo_set_dash(im->cr,
3668 im->gdes[i].p_dashes,
3669 im->gdes[i].ndash, im->gdes[i].offset);
3671 gfx_line(im, im->xorigin,
3672 ytr(im, im->gdes[i].yrule),
3673 im->xorigin + im->xsize,
3674 ytr(im, im->gdes[i].yrule), 1.0, im->gdes[i].col);
3675 cairo_stroke(im->cr);
3676 cairo_restore(im->cr);
3680 if (im->gdes[i].xrule >= im->start
3681 && im->gdes[i].xrule <= im->end) {
3683 if (im->gdes[i].dash) {
3684 cairo_set_dash(im->cr,
3685 im->gdes[i].p_dashes,
3686 im->gdes[i].ndash, im->gdes[i].offset);
3689 xtr(im, im->gdes[i].xrule),
3690 im->yorigin, xtr(im,
3694 im->yorigin - im->ysize, 1.0, im->gdes[i].col);
3695 cairo_stroke(im->cr);
3696 cairo_restore(im->cr);
3705 switch (im->imgformat) {
3708 cairo_status_t status;
3710 status = strlen(im->graphfile) ?
3711 cairo_surface_write_to_png(im->surface, im->graphfile)
3712 : cairo_surface_write_to_png_stream(im->surface, &cairo_output,
3715 if (status != CAIRO_STATUS_SUCCESS) {
3716 rrd_set_error("Could not save png to '%s'", im->graphfile);
3722 if (strlen(im->graphfile)) {
3723 cairo_show_page(im->cr);
3725 cairo_surface_finish(im->surface);
3734 /*****************************************************
3736 *****************************************************/
3743 if ((im->gdes = (graph_desc_t *)
3744 rrd_realloc(im->gdes, (im->gdes_c)
3745 * sizeof(graph_desc_t))) == NULL) {
3746 rrd_set_error("realloc graph_descs");
3751 im->gdes[im->gdes_c - 1].step = im->step;
3752 im->gdes[im->gdes_c - 1].step_orig = im->step;
3753 im->gdes[im->gdes_c - 1].stack = 0;
3754 im->gdes[im->gdes_c - 1].linewidth = 0;
3755 im->gdes[im->gdes_c - 1].debug = 0;
3756 im->gdes[im->gdes_c - 1].start = im->start;
3757 im->gdes[im->gdes_c - 1].start_orig = im->start;
3758 im->gdes[im->gdes_c - 1].end = im->end;
3759 im->gdes[im->gdes_c - 1].end_orig = im->end;
3760 im->gdes[im->gdes_c - 1].vname[0] = '\0';
3761 im->gdes[im->gdes_c - 1].data = NULL;
3762 im->gdes[im->gdes_c - 1].ds_namv = NULL;
3763 im->gdes[im->gdes_c - 1].data_first = 0;
3764 im->gdes[im->gdes_c - 1].p_data = NULL;
3765 im->gdes[im->gdes_c - 1].rpnp = NULL;
3766 im->gdes[im->gdes_c - 1].p_dashes = NULL;
3767 im->gdes[im->gdes_c - 1].shift = 0.0;
3768 im->gdes[im->gdes_c - 1].dash = 0;
3769 im->gdes[im->gdes_c - 1].ndash = 0;
3770 im->gdes[im->gdes_c - 1].offset = 0;
3771 im->gdes[im->gdes_c - 1].col.red = 0.0;
3772 im->gdes[im->gdes_c - 1].col.green = 0.0;
3773 im->gdes[im->gdes_c - 1].col.blue = 0.0;
3774 im->gdes[im->gdes_c - 1].col.alpha = 0.0;
3775 im->gdes[im->gdes_c - 1].legend[0] = '\0';
3776 im->gdes[im->gdes_c - 1].format[0] = '\0';
3777 im->gdes[im->gdes_c - 1].strftm = 0;
3778 im->gdes[im->gdes_c - 1].rrd[0] = '\0';
3779 im->gdes[im->gdes_c - 1].ds = -1;
3780 im->gdes[im->gdes_c - 1].cf_reduce = CF_AVERAGE;
3781 im->gdes[im->gdes_c - 1].cf = CF_AVERAGE;
3782 im->gdes[im->gdes_c - 1].yrule = DNAN;
3783 im->gdes[im->gdes_c - 1].xrule = 0;
3787 /* copies input untill the first unescaped colon is found
3788 or until input ends. backslashes have to be escaped as well */
3790 const char *const input,
3796 for (inp = 0; inp < len && input[inp] != ':' && input[inp] != '\0'; inp++) {
3797 if (input[inp] == '\\'
3798 && input[inp + 1] != '\0'
3799 && (input[inp + 1] == '\\' || input[inp + 1] == ':')) {
3800 output[outp++] = input[++inp];
3802 output[outp++] = input[inp];
3805 output[outp] = '\0';
3809 /* Now just a wrapper around rrd_graph_v */
3821 rrd_info_t *grinfo = NULL;
3824 grinfo = rrd_graph_v(argc, argv);
3830 if (strcmp(walker->key, "image_info") == 0) {
3833 (char**)rrd_realloc((*prdata),
3834 (prlines + 1) * sizeof(char *))) == NULL) {
3835 rrd_set_error("realloc prdata");
3838 /* imginfo goes to position 0 in the prdata array */
3839 (*prdata)[prlines - 1] = (char*)malloc((strlen(walker->value.u_str)
3840 + 2) * sizeof(char));
3841 strcpy((*prdata)[prlines - 1], walker->value.u_str);
3842 (*prdata)[prlines] = NULL;
3844 /* skip anything else */
3845 walker = walker->next;
3853 if (strcmp(walker->key, "image_width") == 0) {
3854 *xsize = walker->value.u_cnt;
3855 } else if (strcmp(walker->key, "image_height") == 0) {
3856 *ysize = walker->value.u_cnt;
3857 } else if (strcmp(walker->key, "value_min") == 0) {
3858 *ymin = walker->value.u_val;
3859 } else if (strcmp(walker->key, "value_max") == 0) {
3860 *ymax = walker->value.u_val;
3861 } else if (strncmp(walker->key, "print", 5) == 0) { /* keys are prdate[0..] */
3864 (char**)rrd_realloc((*prdata),
3865 (prlines + 1) * sizeof(char *))) == NULL) {
3866 rrd_set_error("realloc prdata");
3869 (*prdata)[prlines - 1] = (char*)malloc((strlen(walker->value.u_str)
3870 + 2) * sizeof(char));
3871 (*prdata)[prlines] = NULL;
3872 strcpy((*prdata)[prlines - 1], walker->value.u_str);
3873 } else if (strcmp(walker->key, "image") == 0) {
3874 if ( fwrite(walker->value.u_blo.ptr, walker->value.u_blo.size, 1,
3875 (stream ? stream : stdout)) == 0 && ferror(stream ? stream : stdout)){
3876 rrd_set_error("writing image");
3880 /* skip anything else */
3881 walker = walker->next;
3883 rrd_info_free(grinfo);
3888 /* Some surgery done on this function, it became ridiculously big.
3890 ** - initializing now in rrd_graph_init()
3891 ** - options parsing now in rrd_graph_options()
3892 ** - script parsing now in rrd_graph_script()
3894 rrd_info_t *rrd_graph_v(
3901 rrd_graph_init(&im);
3902 /* a dummy surface so that we can measure text sizes for placements */
3903 old_locale = setlocale(LC_NUMERIC, "C");
3904 rrd_graph_options(argc, argv, &im);
3905 if (rrd_test_error()) {
3906 rrd_info_free(im.grinfo);
3911 if (optind >= argc) {
3912 rrd_info_free(im.grinfo);
3914 rrd_set_error("missing filename");
3918 if (strlen(argv[optind]) >= MAXPATH) {
3919 rrd_set_error("filename (including path) too long");
3920 rrd_info_free(im.grinfo);
3925 strncpy(im.graphfile, argv[optind], MAXPATH - 1);
3926 im.graphfile[MAXPATH - 1] = '\0';
3928 if (strcmp(im.graphfile, "-") == 0) {
3929 im.graphfile[0] = '\0';
3932 rrd_graph_script(argc, argv, &im, 1);
3933 setlocale(LC_NUMERIC, old_locale); /* reenable locale for rendering the graph */
3935 if (rrd_test_error()) {
3936 rrd_info_free(im.grinfo);
3941 /* Everything is now read and the actual work can start */
3943 if (graph_paint(&im) == -1) {
3944 rrd_info_free(im.grinfo);
3950 /* The image is generated and needs to be output.
3951 ** Also, if needed, print a line with information about the image.
3959 path = strdup(im.graphfile);
3960 filename = basename(path);
3962 sprintf_alloc(im.imginfo,
3965 im.ximg), (long) (im.zoom * im.yimg));
3966 grinfo_push(&im, sprintf_alloc("image_info"), RD_I_STR, info);
3970 if (im.rendered_image) {
3973 img.u_blo.size = im.rendered_image_size;
3974 img.u_blo.ptr = im.rendered_image;
3975 grinfo_push(&im, sprintf_alloc("image"), RD_I_BLO, img);
3984 image_desc_t *im,int prop,char *font, double size ){
3986 strncpy(im->text_prop[prop].font, font, sizeof(text_prop[prop].font) - 1);
3987 im->text_prop[prop].font[sizeof(text_prop[prop].font) - 1] = '\0';
3988 im->text_prop[prop].font_desc = pango_font_description_from_string( font );
3991 im->text_prop[prop].size = size;
3993 if (im->text_prop[prop].font_desc && im->text_prop[prop].size ){
3994 pango_font_description_set_size(im->text_prop[prop].font_desc, im->text_prop[prop].size * PANGO_SCALE);
3998 void rrd_graph_init(
4003 char *deffont = getenv("RRD_DEFAULT_FONT");
4004 static PangoFontMap *fontmap = NULL;
4005 PangoContext *context;
4012 im->daemon_addr = NULL;
4013 im->draw_x_grid = 1;
4014 im->draw_y_grid = 1;
4015 im->draw_3d_border = 2;
4016 im->extra_flags = 0;
4017 im->font_options = cairo_font_options_create();
4018 im->forceleftspace = 0;
4021 im->graph_antialias = CAIRO_ANTIALIAS_GRAY;
4022 im->grid_dash_off = 1;
4023 im->grid_dash_on = 1;
4025 im->grinfo = (rrd_info_t *) NULL;
4026 im->grinfo_current = (rrd_info_t *) NULL;
4027 im->imgformat = IF_PNG;
4030 im->legenddirection = TOP_DOWN;
4031 im->legendheight = 0;
4032 im->legendposition = SOUTH;
4033 im->legendwidth = 0;
4034 im->logarithmic = 0;
4040 im->rendered_image_size = 0;
4041 im->rendered_image = NULL;
4045 im->tabwidth = 40.0;
4046 im->title[0] = '\0';
4047 im->unitsexponent = 9999;
4048 im->unitslength = 6;
4049 im->viewfactor = 1.0;
4050 im->watermark[0] = '\0';
4051 im->with_markup = 0;
4053 im->xlab_user.minsec = -1;
4055 im->xOriginLegend = 0;
4056 im->xOriginLegendY = 0;
4057 im->xOriginLegendY2 = 0;
4058 im->xOriginTitle = 0;
4060 im->ygridstep = DNAN;
4062 im->ylegend[0] = '\0';
4063 im->second_axis_scale = 0; /* 0 disables it */
4064 im->second_axis_shift = 0; /* no shift by default */
4065 im->second_axis_legend[0] = '\0';
4066 im->second_axis_format[0] = '\0';
4068 im->yOriginLegend = 0;
4069 im->yOriginLegendY = 0;
4070 im->yOriginLegendY2 = 0;
4071 im->yOriginTitle = 0;
4075 im->surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 10, 10);
4076 im->cr = cairo_create(im->surface);
4078 for (i = 0; i < DIM(text_prop); i++) {
4079 im->text_prop[i].size = -1;
4080 rrd_set_font_desc(im,i, deffont ? deffont : text_prop[i].font,text_prop[i].size);
4083 if (fontmap == NULL){
4084 fontmap = pango_cairo_font_map_get_default();
4087 context = pango_cairo_font_map_create_context((PangoCairoFontMap*)fontmap);
4089 pango_cairo_context_set_resolution(context, 100);
4091 pango_cairo_update_context(im->cr,context);
4093 im->layout = pango_layout_new(context);
4095 // im->layout = pango_cairo_create_layout(im->cr);
4098 cairo_font_options_set_hint_style
4099 (im->font_options, CAIRO_HINT_STYLE_FULL);
4100 cairo_font_options_set_hint_metrics
4101 (im->font_options, CAIRO_HINT_METRICS_ON);
4102 cairo_font_options_set_antialias(im->font_options, CAIRO_ANTIALIAS_GRAY);
4106 for (i = 0; i < DIM(graph_col); i++)
4107 im->graph_col[i] = graph_col[i];
4113 void rrd_graph_options(
4120 char *parsetime_error = NULL;
4121 char scan_gtm[12], scan_mtm[12], scan_ltm[12], col_nam[12];
4122 time_t start_tmp = 0, end_tmp = 0;
4124 rrd_time_value_t start_tv, end_tv;
4125 long unsigned int color;
4127 /* defines for long options without a short equivalent. should be bytes,
4128 and may not collide with (the ASCII value of) short options */
4129 #define LONGOPT_UNITS_SI 255
4132 struct option long_options[] = {
4133 { "alt-autoscale", no_argument, 0, 'A'},
4134 { "imgformat", required_argument, 0, 'a'},
4135 { "font-smoothing-threshold", required_argument, 0, 'B'},
4136 { "base", required_argument, 0, 'b'},
4137 { "color", required_argument, 0, 'c'},
4138 { "full-size-mode", no_argument, 0, 'D'},
4139 { "daemon", required_argument, 0, 'd'},
4140 { "slope-mode", no_argument, 0, 'E'},
4141 { "end", required_argument, 0, 'e'},
4142 { "force-rules-legend", no_argument, 0, 'F'},
4143 { "imginfo", required_argument, 0, 'f'},
4144 { "graph-render-mode", required_argument, 0, 'G'},
4145 { "no-legend", no_argument, 0, 'g'},
4146 { "height", required_argument, 0, 'h'},
4147 { "no-minor", no_argument, 0, 'I'},
4148 { "interlaced", no_argument, 0, 'i'},
4149 { "alt-autoscale-min", no_argument, 0, 'J'},
4150 { "only-graph", no_argument, 0, 'j'},
4151 { "units-length", required_argument, 0, 'L'},
4152 { "lower-limit", required_argument, 0, 'l'},
4153 { "alt-autoscale-max", no_argument, 0, 'M'},
4154 { "zoom", required_argument, 0, 'm'},
4155 { "no-gridfit", no_argument, 0, 'N'},
4156 { "font", required_argument, 0, 'n'},
4157 { "logarithmic", no_argument, 0, 'o'},
4158 { "pango-markup", no_argument, 0, 'P'},
4159 { "font-render-mode", required_argument, 0, 'R'},
4160 { "rigid", no_argument, 0, 'r'},
4161 { "step", required_argument, 0, 'S'},
4162 { "start", required_argument, 0, 's'},
4163 { "tabwidth", required_argument, 0, 'T'},
4164 { "title", required_argument, 0, 't'},
4165 { "upper-limit", required_argument, 0, 'u'},
4166 { "vertical-label", required_argument, 0, 'v'},
4167 { "watermark", required_argument, 0, 'W'},
4168 { "width", required_argument, 0, 'w'},
4169 { "units-exponent", required_argument, 0, 'X'},
4170 { "x-grid", required_argument, 0, 'x'},
4171 { "alt-y-grid", no_argument, 0, 'Y'},
4172 { "y-grid", required_argument, 0, 'y'},
4173 { "lazy", no_argument, 0, 'z'},
4174 { "units", required_argument, 0, LONGOPT_UNITS_SI},
4175 { "alt-y-mrtg", no_argument, 0, 1000}, /* this has no effect it is just here to save old apps from crashing when they use it */
4176 { "disable-rrdtool-tag",no_argument, 0, 1001},
4177 { "right-axis", required_argument, 0, 1002},
4178 { "right-axis-label", required_argument, 0, 1003},
4179 { "right-axis-format", required_argument, 0, 1004},
4180 { "legend-position", required_argument, 0, 1005},
4181 { "legend-direction", required_argument, 0, 1006},
4182 { "border", required_argument, 0, 1007},
4183 { "grid-dash", required_argument, 0, 1008},
4189 opterr = 0; /* initialize getopt */
4190 rrd_parsetime("end-24h", &start_tv);
4191 rrd_parsetime("now", &end_tv);
4193 int option_index = 0;
4195 int col_start, col_end;
4197 opt = getopt_long(argc, argv,
4198 "Aa:B:b:c:Dd:Ee:Ff:G:gh:IiJjL:l:Nn:Bb:oPR:rS:s:T:t:u:v:W:w:X:x:Yy:z",
4199 long_options, &option_index);
4204 im->extra_flags |= NOMINOR;
4207 im->extra_flags |= ALTYGRID;
4210 im->extra_flags |= ALTAUTOSCALE;
4213 im->extra_flags |= ALTAUTOSCALE_MIN;
4216 im->extra_flags |= ALTAUTOSCALE_MAX;
4219 im->extra_flags |= ONLY_GRAPH;
4222 im->extra_flags |= NOLEGEND;
4225 if (strcmp(optarg, "north") == 0) {
4226 im->legendposition = NORTH;
4227 } else if (strcmp(optarg, "west") == 0) {
4228 im->legendposition = WEST;
4229 } else if (strcmp(optarg, "south") == 0) {
4230 im->legendposition = SOUTH;
4231 } else if (strcmp(optarg, "east") == 0) {
4232 im->legendposition = EAST;
4234 rrd_set_error("unknown legend-position '%s'", optarg);
4239 if (strcmp(optarg, "topdown") == 0) {
4240 im->legenddirection = TOP_DOWN;
4241 } else if (strcmp(optarg, "bottomup") == 0) {
4242 im->legenddirection = BOTTOM_UP;
4244 rrd_set_error("unknown legend-position '%s'", optarg);
4249 im->extra_flags |= FORCE_RULES_LEGEND;
4252 im->extra_flags |= NO_RRDTOOL_TAG;
4254 case LONGOPT_UNITS_SI:
4255 if (im->extra_flags & FORCE_UNITS) {
4256 rrd_set_error("--units can only be used once!");
4259 if (strcmp(optarg, "si") == 0)
4260 im->extra_flags |= FORCE_UNITS_SI;
4262 rrd_set_error("invalid argument for --units: %s", optarg);
4267 im->unitsexponent = atoi(optarg);
4270 im->unitslength = atoi(optarg);
4271 im->forceleftspace = 1;
4274 im->tabwidth = atof(optarg);
4277 im->step = atoi(optarg);
4283 im->with_markup = 1;
4286 if ((parsetime_error = rrd_parsetime(optarg, &start_tv))) {
4287 rrd_set_error("start time: %s", parsetime_error);
4292 if ((parsetime_error = rrd_parsetime(optarg, &end_tv))) {
4293 rrd_set_error("end time: %s", parsetime_error);
4298 if (strcmp(optarg, "none") == 0) {
4299 im->draw_x_grid = 0;
4303 "%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n",
4305 &im->xlab_user.gridst,
4307 &im->xlab_user.mgridst,
4309 &im->xlab_user.labst,
4310 &im->xlab_user.precis, &stroff) == 7 && stroff != 0) {
4311 strncpy(im->xlab_form, optarg + stroff,
4312 sizeof(im->xlab_form) - 1);
4313 im->xlab_form[sizeof(im->xlab_form) - 1] = '\0';
4315 (im->xlab_user.gridtm = tmt_conv(scan_gtm)) == -1) {
4316 rrd_set_error("unknown keyword %s", scan_gtm);
4319 (im->xlab_user.mgridtm = tmt_conv(scan_mtm))
4321 rrd_set_error("unknown keyword %s", scan_mtm);
4324 (im->xlab_user.labtm = tmt_conv(scan_ltm)) == -1) {
4325 rrd_set_error("unknown keyword %s", scan_ltm);
4328 im->xlab_user.minsec = 1;
4329 im->xlab_user.stst = im->xlab_form;
4331 rrd_set_error("invalid x-grid format");
4337 if (strcmp(optarg, "none") == 0) {
4338 im->draw_y_grid = 0;
4341 if (sscanf(optarg, "%lf:%d", &im->ygridstep, &im->ylabfact) == 2) {
4342 if (im->ygridstep <= 0) {
4343 rrd_set_error("grid step must be > 0");
4345 } else if (im->ylabfact < 1) {
4346 rrd_set_error("label factor must be > 0");
4350 rrd_set_error("invalid y-grid format");
4355 im->draw_3d_border = atoi(optarg);
4357 case 1008: /* grid-dash */
4361 &im->grid_dash_off) != 2) {
4362 rrd_set_error("expected grid-dash format float:float");
4366 case 1002: /* right y axis */
4370 &im->second_axis_scale,
4371 &im->second_axis_shift) == 2) {
4372 if(im->second_axis_scale==0){
4373 rrd_set_error("the second_axis_scale must not be 0");
4377 rrd_set_error("invalid right-axis format expected scale:shift");
4382 strncpy(im->second_axis_legend,optarg,150);
4383 im->second_axis_legend[150]='\0';
4386 if (bad_format(optarg)){
4387 rrd_set_error("use either %le or %lf formats");
4390 strncpy(im->second_axis_format,optarg,150);
4391 im->second_axis_format[150]='\0';
4394 strncpy(im->ylegend, optarg, 150);
4395 im->ylegend[150] = '\0';
4398 im->maxval = atof(optarg);
4401 im->minval = atof(optarg);
4404 im->base = atol(optarg);
4405 if (im->base != 1024 && im->base != 1000) {
4407 ("the only sensible value for base apart from 1000 is 1024");
4412 long_tmp = atol(optarg);
4413 if (long_tmp < 10) {
4414 rrd_set_error("width below 10 pixels");
4417 im->xsize = long_tmp;
4420 long_tmp = atol(optarg);
4421 if (long_tmp < 10) {
4422 rrd_set_error("height below 10 pixels");
4425 im->ysize = long_tmp;
4428 im->extra_flags |= FULL_SIZE_MODE;
4431 /* interlaced png not supported at the moment */
4437 im->imginfo = optarg;
4441 (im->imgformat = if_conv(optarg)) == -1) {
4442 rrd_set_error("unsupported graphics format '%s'", optarg);
4453 im->logarithmic = 1;
4457 "%10[A-Z]#%n%8lx%n",
4458 col_nam, &col_start, &color, &col_end) == 2) {
4460 int col_len = col_end - col_start;
4465 (((color & 0xF00) * 0x110000) | ((color & 0x0F0) *
4473 (((color & 0xF000) *
4474 0x11000) | ((color & 0x0F00) *
4475 0x01100) | ((color &
4478 ((color & 0x000F) * 0x00011)
4482 color = (color << 8) + 0xff /* shift left by 8 */ ;
4487 rrd_set_error("the color format is #RRGGBB[AA]");
4490 if ((ci = grc_conv(col_nam)) != -1) {
4491 im->graph_col[ci] = gfx_hex_to_col(color);
4493 rrd_set_error("invalid color name '%s'", col_nam);
4497 rrd_set_error("invalid color def format");
4506 if (sscanf(optarg, "%10[A-Z]:%lf%n", prop, &size, &end) >= 2) {
4507 int sindex, propidx;
4509 if ((sindex = text_prop_conv(prop)) != -1) {
4510 for (propidx = sindex;
4511 propidx < TEXT_PROP_LAST; propidx++) {
4513 rrd_set_font_desc(im,propidx,NULL,size);
4515 if ((int) strlen(optarg) > end+2) {
4516 if (optarg[end] == ':') {
4517 rrd_set_font_desc(im,propidx,optarg + end + 1,0);
4520 ("expected : after font size in '%s'",
4525 /* only run the for loop for DEFAULT (0) for
4526 all others, we break here. woodo programming */
4527 if (propidx == sindex && sindex != 0)
4531 rrd_set_error("invalid fonttag '%s'", prop);
4535 rrd_set_error("invalid text property format");
4541 im->zoom = atof(optarg);
4542 if (im->zoom <= 0.0) {
4543 rrd_set_error("zoom factor must be > 0");
4548 strncpy(im->title, optarg, 150);
4549 im->title[150] = '\0';
4552 if (strcmp(optarg, "normal") == 0) {
4553 cairo_font_options_set_antialias
4554 (im->font_options, CAIRO_ANTIALIAS_GRAY);
4555 cairo_font_options_set_hint_style
4556 (im->font_options, CAIRO_HINT_STYLE_FULL);
4557 } else if (strcmp(optarg, "light") == 0) {
4558 cairo_font_options_set_antialias
4559 (im->font_options, CAIRO_ANTIALIAS_GRAY);
4560 cairo_font_options_set_hint_style
4561 (im->font_options, CAIRO_HINT_STYLE_SLIGHT);
4562 } else if (strcmp(optarg, "mono") == 0) {
4563 cairo_font_options_set_antialias
4564 (im->font_options, CAIRO_ANTIALIAS_NONE);
4565 cairo_font_options_set_hint_style
4566 (im->font_options, CAIRO_HINT_STYLE_FULL);
4568 rrd_set_error("unknown font-render-mode '%s'", optarg);
4573 if (strcmp(optarg, "normal") == 0)
4574 im->graph_antialias = CAIRO_ANTIALIAS_GRAY;
4575 else if (strcmp(optarg, "mono") == 0)
4576 im->graph_antialias = CAIRO_ANTIALIAS_NONE;
4578 rrd_set_error("unknown graph-render-mode '%s'", optarg);
4583 /* not supported curently */
4586 strncpy(im->watermark, optarg, 100);
4587 im->watermark[99] = '\0';
4591 if (im->daemon_addr != NULL)
4593 rrd_set_error ("You cannot specify --daemon "
4598 im->daemon_addr = strdup(optarg);
4599 if (im->daemon_addr == NULL)
4601 rrd_set_error("strdup failed");
4609 rrd_set_error("unknown option '%c'", optopt);
4611 rrd_set_error("unknown option '%s'", argv[optind - 1]);
4616 { /* try to connect to rrdcached */
4617 int status = rrdc_connect(im->daemon_addr);
4618 if (status != 0) return;
4621 pango_cairo_context_set_font_options(pango_layout_get_context(im->layout), im->font_options);
4622 pango_layout_context_changed(im->layout);
4626 if (im->logarithmic && im->minval <= 0) {
4628 ("for a logarithmic yaxis you must specify a lower-limit > 0");
4632 if (rrd_proc_start_end(&start_tv, &end_tv, &start_tmp, &end_tmp) == -1) {
4633 /* error string is set in rrd_parsetime.c */
4637 if (start_tmp < 3600 * 24 * 365 * 10) {
4639 ("the first entry to fetch should be after 1980 (%ld)",
4644 if (end_tmp < start_tmp) {
4646 ("start (%ld) should be less than end (%ld)", start_tmp, end_tmp);
4650 im->start = start_tmp;
4652 im->step = max((long) im->step, (im->end - im->start) / im->xsize);
4655 int rrd_graph_color(
4663 graph_desc_t *gdp = &im->gdes[im->gdes_c - 1];
4665 color = strstr(var, "#");
4666 if (color == NULL) {
4667 if (optional == 0) {
4668 rrd_set_error("Found no color in %s", err);
4675 long unsigned int col;
4677 rest = strstr(color, ":");
4684 sscanf(color, "#%6lx%n", &col, &n);
4685 col = (col << 8) + 0xff /* shift left by 8 */ ;
4687 rrd_set_error("Color problem in %s", err);
4690 sscanf(color, "#%8lx%n", &col, &n);
4694 rrd_set_error("Color problem in %s", err);
4696 if (rrd_test_error())
4698 gdp->col = gfx_hex_to_col(col);
4711 while (*ptr != '\0')
4712 if (*ptr++ == '%') {
4714 /* line cannot end with percent char */
4717 /* '%s', '%S' and '%%' are allowed */
4718 if (*ptr == 's' || *ptr == 'S' || *ptr == '%')
4720 /* %c is allowed (but use only with vdef!) */
4721 else if (*ptr == 'c') {
4726 /* or else '% 6.2lf' and such are allowed */
4728 /* optional padding character */
4729 if (*ptr == ' ' || *ptr == '+' || *ptr == '-')
4731 /* This should take care of 'm.n' with all three optional */
4732 while (*ptr >= '0' && *ptr <= '9')
4736 while (*ptr >= '0' && *ptr <= '9')
4738 /* Either 'le', 'lf' or 'lg' must follow here */
4741 if (*ptr == 'e' || *ptr == 'f' || *ptr == 'g')
4756 const char *const str)
4758 /* A VDEF currently is either "func" or "param,func"
4759 * so the parsing is rather simple. Change if needed.
4766 sscanf(str, "%le,%29[A-Z]%n", ¶m, func, &n);
4767 if (n == (int) strlen(str)) { /* matched */
4771 sscanf(str, "%29[A-Z]%n", func, &n);
4772 if (n == (int) strlen(str)) { /* matched */
4776 ("Unknown function string '%s' in VDEF '%s'",
4781 if (!strcmp("PERCENT", func))
4782 gdes->vf.op = VDEF_PERCENT;
4783 else if (!strcmp("PERCENTNAN", func))
4784 gdes->vf.op = VDEF_PERCENTNAN;
4785 else if (!strcmp("MAXIMUM", func))
4786 gdes->vf.op = VDEF_MAXIMUM;
4787 else if (!strcmp("AVERAGE", func))
4788 gdes->vf.op = VDEF_AVERAGE;
4789 else if (!strcmp("STDEV", func))
4790 gdes->vf.op = VDEF_STDEV;
4791 else if (!strcmp("MINIMUM", func))
4792 gdes->vf.op = VDEF_MINIMUM;
4793 else if (!strcmp("TOTAL", func))
4794 gdes->vf.op = VDEF_TOTAL;
4795 else if (!strcmp("FIRST", func))
4796 gdes->vf.op = VDEF_FIRST;
4797 else if (!strcmp("LAST", func))
4798 gdes->vf.op = VDEF_LAST;
4799 else if (!strcmp("LSLSLOPE", func))
4800 gdes->vf.op = VDEF_LSLSLOPE;
4801 else if (!strcmp("LSLINT", func))
4802 gdes->vf.op = VDEF_LSLINT;
4803 else if (!strcmp("LSLCORREL", func))
4804 gdes->vf.op = VDEF_LSLCORREL;
4807 ("Unknown function '%s' in VDEF '%s'\n", func, gdes->vname);
4810 switch (gdes->vf.op) {
4812 case VDEF_PERCENTNAN:
4813 if (isnan(param)) { /* no parameter given */
4815 ("Function '%s' needs parameter in VDEF '%s'\n",
4819 if (param >= 0.0 && param <= 100.0) {
4820 gdes->vf.param = param;
4821 gdes->vf.val = DNAN; /* undefined */
4822 gdes->vf.when = 0; /* undefined */
4825 ("Parameter '%f' out of range in VDEF '%s'\n",
4826 param, gdes->vname);
4839 case VDEF_LSLCORREL:
4841 gdes->vf.param = DNAN;
4842 gdes->vf.val = DNAN;
4846 ("Function '%s' needs no parameter in VDEF '%s'\n",
4860 graph_desc_t *src, *dst;
4864 dst = &im->gdes[gdi];
4865 src = &im->gdes[dst->vidx];
4866 data = src->data + src->ds;
4868 steps = (src->end - src->start) / src->step;
4871 ("DEBUG: start == %lu, end == %lu, %lu steps\n",
4872 src->start, src->end, steps);
4874 switch (dst->vf.op) {
4878 if ((array = (rrd_value_t*)malloc(steps * sizeof(double))) == NULL) {
4879 rrd_set_error("malloc VDEV_PERCENT");
4882 for (step = 0; step < steps; step++) {
4883 array[step] = data[step * src->ds_cnt];
4885 qsort(array, step, sizeof(double), vdef_percent_compar);
4886 field = round((dst->vf.param * (double)(steps - 1)) / 100.0);
4887 dst->vf.val = array[field];
4888 dst->vf.when = 0; /* no time component */
4891 for (step = 0; step < steps; step++)
4892 printf("DEBUG: %3li:%10.2f %c\n",
4893 step, array[step], step == field ? '*' : ' ');
4897 case VDEF_PERCENTNAN:{
4900 /* count number of "valid" values */
4902 for (step = 0; step < steps; step++) {
4903 if (!isnan(data[step * src->ds_cnt])) { nancount++; }
4905 /* and allocate it */
4906 if ((array = (rrd_value_t*)malloc(nancount * sizeof(double))) == NULL) {
4907 rrd_set_error("malloc VDEV_PERCENT");
4910 /* and fill it in */
4912 for (step = 0; step < steps; step++) {
4913 if (!isnan(data[step * src->ds_cnt])) {
4914 array[field] = data[step * src->ds_cnt];
4918 qsort(array, nancount, sizeof(double), vdef_percent_compar);
4919 field = round( dst->vf.param * (double)(nancount - 1) / 100.0);
4920 dst->vf.val = array[field];
4921 dst->vf.when = 0; /* no time component */
4927 while (step != steps && isnan(data[step * src->ds_cnt]))
4929 if (step == steps) {
4933 dst->vf.val = data[step * src->ds_cnt];
4934 dst->vf.when = src->start + (step + 1) * src->step;
4936 while (step != steps) {
4937 if (finite(data[step * src->ds_cnt])) {
4938 if (data[step * src->ds_cnt] > dst->vf.val) {
4939 dst->vf.val = data[step * src->ds_cnt];
4940 dst->vf.when = src->start + (step + 1) * src->step;
4951 double average = 0.0;
4953 for (step = 0; step < steps; step++) {
4954 if (finite(data[step * src->ds_cnt])) {
4955 sum += data[step * src->ds_cnt];
4960 if (dst->vf.op == VDEF_TOTAL) {
4961 dst->vf.val = sum * src->step;
4962 dst->vf.when = 0; /* no time component */
4963 } else if (dst->vf.op == VDEF_AVERAGE) {
4964 dst->vf.val = sum / cnt;
4965 dst->vf.when = 0; /* no time component */
4967 average = sum / cnt;
4969 for (step = 0; step < steps; step++) {
4970 if (finite(data[step * src->ds_cnt])) {
4971 sum += pow((data[step * src->ds_cnt] - average), 2.0);
4974 dst->vf.val = pow(sum / cnt, 0.5);
4975 dst->vf.when = 0; /* no time component */
4985 while (step != steps && isnan(data[step * src->ds_cnt]))
4987 if (step == steps) {
4991 dst->vf.val = data[step * src->ds_cnt];
4992 dst->vf.when = src->start + (step + 1) * src->step;
4994 while (step != steps) {
4995 if (finite(data[step * src->ds_cnt])) {
4996 if (data[step * src->ds_cnt] < dst->vf.val) {
4997 dst->vf.val = data[step * src->ds_cnt];
4998 dst->vf.when = src->start + (step + 1) * src->step;
5005 /* The time value returned here is one step before the
5006 * actual time value. This is the start of the first
5010 while (step != steps && isnan(data[step * src->ds_cnt]))
5012 if (step == steps) { /* all entries were NaN */
5016 dst->vf.val = data[step * src->ds_cnt];
5017 dst->vf.when = src->start + step * src->step;
5021 /* The time value returned here is the
5022 * actual time value. This is the end of the last
5026 while (step >= 0 && isnan(data[step * src->ds_cnt]))
5028 if (step < 0) { /* all entries were NaN */
5032 dst->vf.val = data[step * src->ds_cnt];
5033 dst->vf.when = src->start + (step + 1) * src->step;
5038 case VDEF_LSLCORREL:{
5039 /* Bestfit line by linear least squares method */
5042 double SUMx, SUMy, SUMxy, SUMxx, SUMyy, slope, y_intercept, correl;
5049 for (step = 0; step < steps; step++) {
5050 if (finite(data[step * src->ds_cnt])) {
5053 SUMxx += step * step;
5054 SUMxy += step * data[step * src->ds_cnt];
5055 SUMy += data[step * src->ds_cnt];
5056 SUMyy += data[step * src->ds_cnt] * data[step * src->ds_cnt];
5060 slope = (SUMx * SUMy - cnt * SUMxy) / (SUMx * SUMx - cnt * SUMxx);
5061 y_intercept = (SUMy - slope * SUMx) / cnt;
5064 (SUMx * SUMy) / cnt) /
5066 (SUMx * SUMx) / cnt) * (SUMyy - (SUMy * SUMy) / cnt));
5068 if (dst->vf.op == VDEF_LSLSLOPE) {
5069 dst->vf.val = slope;
5071 } else if (dst->vf.op == VDEF_LSLINT) {
5072 dst->vf.val = y_intercept;
5074 } else if (dst->vf.op == VDEF_LSLCORREL) {
5075 dst->vf.val = correl;
5088 /* NaN < -INF < finite_values < INF */
5089 int vdef_percent_compar(
5095 /* Equality is not returned; this doesn't hurt except
5096 * (maybe) for a little performance.
5099 /* First catch NaN values. They are smallest */
5100 if (isnan(*(double *) a))
5102 if (isnan(*(double *) b))
5104 /* NaN doesn't reach this part so INF and -INF are extremes.
5105 * The sign from isinf() is compatible with the sign we return
5107 if (isinf(*(double *) a))
5108 return isinf(*(double *) a);
5109 if (isinf(*(double *) b))
5110 return isinf(*(double *) b);
5111 /* If we reach this, both values must be finite */
5112 if (*(double *) a < *(double *) b)
5121 rrd_info_type_t type,
5122 rrd_infoval_t value)
5124 im->grinfo_current = rrd_info_push(im->grinfo_current, key, type, value);
5125 if (im->grinfo == NULL) {
5126 im->grinfo = im->grinfo_current;