SVG: Add separate function for graphs autoscaling

Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>

diff --git a/svg_stats.c b/svg_stats.c
index faa9f6d8cc3d88bd9e2ac738448b55a7defa4e95..674b7ede0ece0f310292c33ba5470d7d92e266f3 100644 (file)
--- a/svg_stats.c
+++ b/svg_stats.c
@@ -521,6 +521,47 @@ unsigned int pwr10(int n)
        return e;
 }
 
+/*
+ ***************************************************************************
+ * Autoscale graphs of a given view.
+ *
+ * IN:
+ * @asf_nr     (Maximum) number of autoscale factors.
+ * @group      Number of graphs in current view.
+ * @g_type     Type of graph (SVG_LINE_GRAPH, SVG_BAR_GRAPH).
+ * @pos                Position in array for the first graph in view.
+ * @gmax       Global max value for all graphs in view.
+ * @spmax      Array containing max values for graphs.
+ *
+ * OUT:
+ * @asfactor   Autoscale factors (one for each graph).
+ ***************************************************************************
+ */
+void gr_autoscaling(unsigned int asfactor[], int asf_nr, int group, int g_type, int pos,
+                   double gmax, double *spmax)
+{
+       int j;
+       char val[32];
+
+       for (j = 0; j < asf_nr; j++) {
+               /* Init autoscale factors */
+               asfactor[j] = 1;
+       }
+
+       if (AUTOSCALE_ON(flags) && (group > 1) && gmax && (g_type == SVG_LINE_GRAPH)) {
+               /* Autoscaling... */
+               for (j = 0; (j < group) && (j < asf_nr); j++) {
+                       if (!*(spmax + pos + j) || (*(spmax + pos + j) == gmax))
+                               continue;
+
+                       snprintf(val, 32, "%u", (unsigned int) (gmax / *(spmax + pos + j)));
+                       if (strlen(val) > 0) {
+                               asfactor[j] = pwr10(strlen(val) - 1);
+                       }
+               }
+       }
+}
+
 /*
  ***************************************************************************
  * Calculate the value on the Y axis between two horizontal lines that will
@@ -734,23 +775,8 @@ void draw_activity_graphs(int g_nr, int g_type, char *title[], char *g_title[],
                       SVG_M_XSIZE, SVG_M_YSIZE + SVG_G_YSIZE + (views_nr - 1) * SVG_T_YSIZE,
                       SVG_M_XSIZE + SVG_G_XSIZE, SVG_M_YSIZE + SVG_G_YSIZE + (views_nr - 1) * SVG_T_YSIZE);
 
-               for (j = 0; j < 16; j++) {
-                       /* Init autoscale factors */
-                       asfactor[j] = 1;
-               }
-
-               if (AUTOSCALE_ON(flags) && (group[i] > 1) && gmax && (g_type == SVG_LINE_GRAPH)) {
-                       /* Autoscaling... */
-                       for (j = 0; (j < group[i]) && (j < 16); j++) {
-                               if (!*(spmax + pos + j) || (*(spmax + pos + j) == gmax))
-                                       continue;
-
-                               snprintf(val, 32, "%u", (unsigned int) (gmax / *(spmax + pos + j)));
-                               if (strlen(val) > 0) {
-                                       asfactor[j] = pwr10(strlen(val) - 1);
-                               }
-                       }
-               }
+               /* Autoscaling graphs if needed */
+               gr_autoscaling(asfactor, 16, group[i], g_type, pos, gmax, spmax);
 
                /* Caption */
                for (j = 0; j < group[i]; j++) {