if stacking on nothing we should not try to figure out WHAT we stacked on since this...
[rrdtool.git] / src / rrd_graph.c
index 0daa551..01e174c 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * RRDtool 1.2rc6  Copyright by Tobi Oetiker, 1997-2005
+ * RRDtool 1.2.1  Copyright by Tobi Oetiker, 1997-2005
  ****************************************************************************
  * rrd__graph.c  produce graphs from data in rrdfiles
  ****************************************************************************/
 
 #ifndef RRD_DEFAULT_FONT
 /* there is special code later to pick Cour.ttf when running on windows */
-#define RRD_DEFAULT_FONT "VeraMono.ttf"
+#define RRD_DEFAULT_FONT "DejaVuSansMono-Roman.ttf"
 #endif
 
 text_prop_t text_prop[] = {   
-     { 9.0, RRD_DEFAULT_FONT }, /* default */
-     { 11.0, RRD_DEFAULT_FONT }, /* title */
-     { 8.0,  RRD_DEFAULT_FONT }, /* axis */
-     { 9.0, RRD_DEFAULT_FONT }, /* unit */
-     { 9.0, RRD_DEFAULT_FONT }  /* legend */
+     { 8.0, RRD_DEFAULT_FONT }, /* default */
+     { 9.0, RRD_DEFAULT_FONT }, /* title */
+     { 7.0,  RRD_DEFAULT_FONT }, /* axis */
+     { 8.0, RRD_DEFAULT_FONT }, /* unit */
+     { 8.0, RRD_DEFAULT_FONT }  /* legend */
 };
 
 xlab_t xlab[] = {
@@ -329,23 +329,30 @@ si_unit(
                     'E'};/* 10e18  Exa */
 
     int   symbcenter = 6;
-    double digits;  
+    double digits,viewdigits=0;  
     
+    digits = floor( log( max( fabs(im->minval),fabs(im->maxval)))/log((double)im->base)); 
+
     if (im->unitsexponent != 9999) {
        /* unitsexponent = 9, 6, 3, 0, -3, -6, -9, etc */
-        digits = floor(im->unitsexponent / 3);
+        viewdigits = floor(im->unitsexponent / 3);
     } else {
-        digits = floor( log( max( fabs(im->minval),fabs(im->maxval)))/log((double)im->base)); 
+       viewdigits = digits;
     }
+
     im->magfact = pow((double)im->base , digits);
     
 #ifdef DEBUG
     printf("digits %6.3f  im->magfact %6.3f\n",digits,im->magfact);
 #endif
 
-    if ( ((digits+symbcenter) < sizeof(symbol)) &&
-                   ((digits+symbcenter) >= 0) )
-        im->symbol = symbol[(int)digits+symbcenter];
+    im->viewfactor = im->magfact / pow((double)im->base , viewdigits);
+
+    pow((double)im->base , viewdigits);
+
+    if ( ((viewdigits+symbcenter) < sizeof(symbol)) &&
+                   ((viewdigits+symbcenter) >= 0) )
+        im->symbol = symbol[(int)viewdigits+symbcenter];
     else
        im->symbol = '?';
  }
@@ -1289,14 +1296,16 @@ print_calc(image_desc_t *im, char ***prdata)
 
            if (!strcmp(im->gdes[i].format,"%c")) { /* VDEF time print */
                char ctime_buf[128]; /* PS: for ctime_r, must be >= 26 chars */
+               int iii=0;
+               ctime_r(&printtime,ctime_buf); 
+               while(isprint(ctime_buf[iii])){iii++;}
+               ctime_buf[iii]='\0';
                if (im->gdes[i].gf == GF_PRINT){
                    (*prdata)[prlines-2] = malloc((FMT_LEG_LEN+2)*sizeof(char));
-                   sprintf((*prdata)[prlines-2],"%s (%lu)",
-                                       ctime_r(&printtime,ctime_buf),printtime);
+                   sprintf((*prdata)[prlines-2],"%s (%lu)",ctime_buf,printtime);
                    (*prdata)[prlines-1] = NULL;
                } else {
-                   sprintf(im->gdes[i].legend,"%s (%lu)",
-                                       ctime_r(&printtime,ctime_buf),printtime);
+                   sprintf(im->gdes[i].legend,"%s (%lu)",ctime_buf,printtime);
                    graphelement = 1;
                }
            } else {
@@ -1488,7 +1497,7 @@ leg_place(image_desc_t *im)
                   + legspace[ii]
                   + glue;
            }                   
-           leg_y += im->text_prop[TEXT_PROP_LEGEND].size*1.7;
+           leg_y += im->text_prop[TEXT_PROP_LEGEND].size*1.8;
            if (prt_fctn == 's') leg_y -=  im->text_prop[TEXT_PROP_LEGEND].size;           
            fill = 0;
            leg_c = 0;
@@ -1610,19 +1619,19 @@ int draw_horizontal_grid(image_desc_t *im)
                if (i==0 || im->symbol == ' ') {
                    if(scaledstep < 1){
                        if(im->extra_flags & ALTYGRID) {
-                           sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*i);
+                           sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*im->viewfactor*i);
                        }
                        else {
-                           sprintf(graph_label,"%4.1f",scaledstep*i);
+                           sprintf(graph_label,"%4.1f",scaledstep*im->viewfactor*i);
                        }
                    } else {
-                       sprintf(graph_label,"%4.0f",scaledstep*i);
+                       sprintf(graph_label,"%4.0f",scaledstep*im->viewfactor*i);
                    }
                }else {
                    if(scaledstep < 1){
-                       sprintf(graph_label,"%4.1f %c",scaledstep*i, im->symbol);
+                       sprintf(graph_label,"%4.1f %c",scaledstep*im->viewfactor*i, im->symbol);
                    } else {
-                       sprintf(graph_label,"%4.0f %c",scaledstep*i, im->symbol);
+                       sprintf(graph_label,"%4.0f %c",scaledstep*im->viewfactor*i, im->symbol);
                    }
                }
 
@@ -1929,7 +1938,7 @@ grid_paint(image_desc_t   *im)
 
     /* yaxis unit description */
     gfx_new_text( im->canvas,
-                  7, (im->yorigin - im->ysize/2),
+                  12, (im->yorigin - im->ysize/2),
                   im->graph_col[GRC_FONT],
                   im->text_prop[TEXT_PROP_UNIT].font,
                   im->text_prop[TEXT_PROP_UNIT].size, im->tabwidth, 
@@ -1939,7 +1948,7 @@ grid_paint(image_desc_t   *im)
 
     /* graph title */
     gfx_new_text( im->canvas,
-                 im->ximg/2, im->text_prop[TEXT_PROP_TITLE].size*1.2,
+                 im->ximg/2, im->text_prop[TEXT_PROP_TITLE].size*1.3+4,
                  im->graph_col[GRC_FONT],
                  im->text_prop[TEXT_PROP_TITLE].font,
                  im->text_prop[TEXT_PROP_TITLE].size, im->tabwidth, 0.0,
@@ -2108,8 +2117,8 @@ graph_size_location(image_desc_t *im, int elements
     ** | |..............legends......................|
     ** +-+-------------------------------------------+
     */
-    int Xvertical=0,   Yvertical=0,
-       Xtitle   =0,    Ytitle   =0,
+    int Xvertical=0,   
+                       Ytitle   =0,
        Xylabel  =0,    
        Xmain    =0,    Ymain    =0,
 #ifdef WITH_PIECHART
@@ -2131,10 +2140,6 @@ graph_size_location(image_desc_t *im, int elements
 
     if (im->ylegend[0] != '\0' ) {
            Xvertical = im->text_prop[TEXT_PROP_UNIT].size *2;
-           Yvertical = gfx_get_text_width(im->canvas, 0,
-                                          im->text_prop[TEXT_PROP_UNIT].font,
-                                          im->text_prop[TEXT_PROP_UNIT].size,
-                                          im->tabwidth,im->ylegend, 0);
     }
 
 
@@ -2143,12 +2148,13 @@ graph_size_location(image_desc_t *im, int elements
        ** automatically has some vertical spacing.  The horizontal
        ** spacing is added here, on each side.
        */
-       Xtitle = gfx_get_text_width(im->canvas, 0,
+       /* don't care for the with of the title
+               Xtitle = gfx_get_text_width(im->canvas, 0,
                im->text_prop[TEXT_PROP_TITLE].font,
                im->text_prop[TEXT_PROP_TITLE].size,
                im->tabwidth,
-               im->title, 0) + 2*Xspacing;
-       Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2.5;
+               im->title, 0) + 2*Xspacing; */
+       Ytitle = im->text_prop[TEXT_PROP_TITLE].size*2.6+10;
     }
 
     if (elements) {
@@ -2162,7 +2168,7 @@ graph_size_location(image_desc_t *im, int elements
                        im->text_prop[TEXT_PROP_AXIS].font,
                        im->text_prop[TEXT_PROP_AXIS].size,
                        im->tabwidth,
-                       "0", 0) * im->unitslength + im->text_prop[TEXT_PROP_AXIS].size * 2;
+                       "0", 0) * im->unitslength + Xspacing;
        }
     }
 
@@ -2198,7 +2204,8 @@ graph_size_location(image_desc_t *im, int elements
 
     im->xorigin = Xspacing + Xylabel;
 
-    if (Xtitle > im->ximg) im->ximg = Xtitle;
+    /* the length of the title should not influence with width of the graph
+       if (Xtitle > im->ximg) im->ximg = Xtitle; */
 
     if (Xvertical) { /* unit description */
        im->ximg += Xvertical;
@@ -2230,8 +2237,8 @@ graph_size_location(image_desc_t *im, int elements
        im->yimg += Ytitle;
        im->yorigin += Ytitle;
     } else {
-       im->yimg += Yspacing;
-       im->yorigin += Yspacing;
+       im->yimg += 1.5*Yspacing;
+       im->yorigin += 1.5*Yspacing;
     }
     /* reserve space for padding below the graph */
     im->yimg += Yspacing;
@@ -2243,8 +2250,6 @@ graph_size_location(image_desc_t *im, int elements
     if(leg_place(im)==-1)
        return -1;
 
-    /* last of three steps: check total height of image */
-    if (im->yimg < Yvertical) im->yimg = Yvertical;
 
 #if 0
     if (Xlegend > im->ximg) {
@@ -2477,7 +2482,7 @@ graph_paint(image_desc_t *im, char ***calcpr)
                continue;
            }
             ytop = ytr(im,im->gdes[i].p_data[ii]);
-           if ( im->gdes[i].stack ) {
+           if ( lastgdes && im->gdes[i].stack ) {
                   ybase = ytr(im,lastgdes->p_data[ii]);
             } else {
                   ybase = ytr(im,areazero);
@@ -2531,12 +2536,14 @@ graph_paint(image_desc_t *im, char ***calcpr)
   }
 #endif
 
-  if( !(im->extra_flags & ONLY_GRAPH) )  
-      axis_paint(im);
 
   /* grid_paint also does the text */
   if( !(im->extra_flags & ONLY_GRAPH) )  
     grid_paint(im);
+
+  
+  if( !(im->extra_flags & ONLY_GRAPH) )  
+      axis_paint(im);
   
   /* the RULES are the last thing to paint ... */
   for(i=0;i<im->gdes_c;i++){    
@@ -2662,7 +2669,6 @@ int
 rrd_graph(int argc, char **argv, char ***prdata, int *xsize, int *ysize, FILE *stream, double *ymin, double *ymax)
 {
     image_desc_t   im;
-            
     rrd_graph_init(&im);
     im.graphhandle = stream;
     
@@ -2753,7 +2759,9 @@ rrd_graph_init(image_desc_t *im)
     im->minval = DNAN;
     im->maxval = DNAN;    
     im->unitsexponent= 9999;
-    im->unitslength= 5; 
+    im->unitslength= 6; 
+    im->symbol = ' ';
+    im->viewfactor = 1.0;
     im->extra_flags= 0;
     im->rigid = 0;
     im->gridfit = 1;
@@ -2784,11 +2792,13 @@ rrd_graph_init(image_desc_t *im)
             if (windir != NULL) {
                     strncpy(rrd_win_default_font,windir,999);
                     rrd_win_default_font[999] = '\0';
-                    strcat(rrd_win_default_font,"\\fonts\\cour.ttf");
+                    strcat(rrd_win_default_font,"\\fonts\\");
+                   strcat(rrd_win_default_font,RRD_DEFAULT_FONT);         
                     for(i=0;i<DIM(text_prop);i++){
                             strncpy(text_prop[i].font,rrd_win_default_font,sizeof(text_prop[i].font)-1);
                             text_prop[i].font[sizeof(text_prop[i].font)-1] = '\0';
                      }
+             }
     }
 #endif
     {
@@ -2817,6 +2827,7 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
     long               long_tmp;
     struct rrd_time_value      start_tv, end_tv;
     gfx_color_t         color;
+    optind = 0; opterr = 0;  /* initialize getopt */
 
     parsetime("end-24h", &start_tv);
     parsetime("now", &end_tv);
@@ -2856,13 +2867,15 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
            {"units-length",required_argument, 0, 'L'},
            {"step",       required_argument, 0,    'S'},
             {"tabwidth",   required_argument, 0,    'T'},            
+           {"font-render-mode", required_argument, 0, 'R'},
+           {"font-smoothing-threshold", required_argument, 0, 'B'},
            {0,0,0,0}};
        int option_index = 0;
        int opt;
         int col_start,col_end;
 
        opt = getopt_long(argc, argv, 
-                        "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:I:zgjFYAMX:L:S:T:N",
+                        "s:e:x:y:v:w:h:iu:l:rb:oc:n:m:t:f:a:I:zgjFYAMX:L:S:T:NR:B:",
                          long_options, &option_index);
 
        if (opt == EOF)
@@ -3102,6 +3115,24 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
            im->title[150]='\0';
            break;
 
+       case 'R':
+               if ( strcmp( optarg, "normal" ) == 0 )
+                       im->canvas->aa_type = AA_NORMAL;
+               else if ( strcmp( optarg, "light" ) == 0 )
+                       im->canvas->aa_type = AA_LIGHT;
+               else if ( strcmp( optarg, "mono" ) == 0 )
+                       im->canvas->aa_type = AA_NONE;
+               else
+               {
+                       rrd_set_error("unknown font-render-mode '%s'", optarg );
+                       return;
+               }
+               break;
+
+       case 'B':
+           im->canvas->font_aa_threshold = atof(optarg);
+               break;
+
        case '?':
             if (optopt != 0)
                 rrd_set_error("unknown option '%c'", optopt);