X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=src%2Frrd_graph.c;h=a3994910ce98e42538d00444edf8e3d731b6e701;hp=3840c2d09b7e4a8a217604a4b4bcd611a1f740fd;hb=08b4b4d41ae3c06e4b611c77c1d43c238b2e1748;hpb=97fd0c7bffba47ce2b962364e7382b202cb0a469

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 3840c2d..a399491 100644
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -1,5 +1,5 @@
-/strfcmp/****************************************************************************
- * RRDtool 1.2rc7  Copyright by Tobi Oetiker, 1997-2005
+/****************************************************************************
+ * RRDtool 1.2.6  Copyright by Tobi Oetiker, 1997-2005
  ****************************************************************************
  * rrd__graph.c  produce graphs from data in rrdfiles
  ****************************************************************************/
@@ -9,7 +9,7 @@
 
 #include "rrd_tool.h"
 
-#if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
+#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
 #include <io.h>
 #include <fcntl.h>
 #endif
@@ -30,15 +30,15 @@
 
 #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[] = {
@@ -151,9 +151,9 @@ ytr(image_desc_t *im, double value){
     if (! im->rigid) {
       /* keep yval as-is */
     } else if (yval > im->yorigin) {
-      yval = im->yorigin+2;
+      yval = im->yorigin +0.00001;
     } else if (yval < im->yorigin - im->ysize){
-      yval = im->yorigin - im->ysize - 2;
+      yval = im->yorigin - im->ysize - 0.00001;
     } 
     return yval;
 }
@@ -886,26 +886,29 @@ data_calc( image_desc_t *im){
 		 *   and the resulting number is the step size for the
 		 *   resulting data source.
 		 */
-		for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
-		if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
-		   im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER){
-			long ptr = im->gdes[gdi].rpnp[rpi].ptr;
-			if (im->gdes[ptr].ds_cnt == 0) {
+	        for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
+	            if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE  ||
+		        im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER){
+		        long ptr = im->gdes[gdi].rpnp[rpi].ptr;
+		        if (im->gdes[ptr].ds_cnt == 0) { /* this is a VDEF data source */
 #if 0
-			printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
-	im->gdes[gdi].vname,
-	im->gdes[ptr].vname);
-			printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
+			    printf("DEBUG: inside CDEF '%s' processing VDEF '%s'\n",
+			       im->gdes[gdi].vname,
+			       im->gdes[ptr].vname);
+			    printf("DEBUG: value from vdef is %f\n",im->gdes[ptr].vf.val);
 #endif
 			    im->gdes[gdi].rpnp[rpi].val = im->gdes[ptr].vf.val;
 			    im->gdes[gdi].rpnp[rpi].op  = OP_NUMBER;
-			} else {
-			if ((steparray =
+			} else { /* normal variables and PREF(variables) */
+
+			    /* add one entry to the array that keeps track of the step sizes of the
+			     * data sources going into the CDEF. */
+			    if ((steparray =
 				 rrd_realloc(steparray,
 							 (++stepcnt+1)*sizeof(*steparray)))==NULL){
-				rrd_set_error("realloc steparray");
-				rpnstack_free(&rpnstack);
-				return -1;
+			 	 rrd_set_error("realloc steparray");
+			 	 rpnstack_free(&rpnstack);
+				 return -1;
 			    };
 
 			    steparray[stepcnt-1] = im->gdes[ptr].step;
@@ -915,6 +918,7 @@ data_calc( image_desc_t *im){
 			     * to the earliest endpoint of any of the
 			     * rras involved (ptr)
 			     */
+
 			    if(im->gdes[gdi].start < im->gdes[ptr].start)
 				im->gdes[gdi].start = im->gdes[ptr].start;
 
@@ -927,8 +931,8 @@ data_calc( image_desc_t *im){
 			     * further save step size and data source
 			     * count of this rra
 			     */ 
-                            im->gdes[gdi].rpnp[rpi].data =  im->gdes[ptr].data + im->gdes[ptr].ds;
-			    im->gdes[gdi].rpnp[rpi].step = im->gdes[ptr].step;
+                            im->gdes[gdi].rpnp[rpi].data   = im->gdes[ptr].data + im->gdes[ptr].ds;
+			    im->gdes[gdi].rpnp[rpi].step   = im->gdes[ptr].step;
 			    im->gdes[gdi].rpnp[rpi].ds_cnt = im->gdes[ptr].ds_cnt;
 
 			    /* backoff the *.data ptr; this is done so
@@ -941,9 +945,9 @@ data_calc( image_desc_t *im){
 
                 /* move the data pointers to the correct period */
                 for(rpi=0;im->gdes[gdi].rpnp[rpi].op != OP_END;rpi++){
-		if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
-		   im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER){
-                        long ptr = im->gdes[gdi].rpnp[rpi].ptr;
+		    if(im->gdes[gdi].rpnp[rpi].op == OP_VARIABLE ||
+		        im->gdes[gdi].rpnp[rpi].op == OP_PREV_OTHER){
+		        long ptr  = im->gdes[gdi].rpnp[rpi].ptr;
 			long diff = im->gdes[gdi].start - im->gdes[ptr].start;
 
                         if(diff > 0)
@@ -1298,7 +1302,7 @@ print_calc(image_desc_t *im, char ***prdata)
 		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++};
+		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));
@@ -1497,7 +1501,7 @@ 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;
@@ -1578,14 +1582,14 @@ calc_horizontal_grid(image_desc_t   *im)
 	else {
 	    for(i=0;ylab[i].grid > 0;i++){
 		pixel = im->ysize / (scaledrange / ylab[i].grid);
-		if (pixel > 5) {
+		if (pixel > 7) {
 		    gridind = i;
 		    break;
 		}
 	    }
 	    
 	    for(i=0; i<4;i++) {
-	       if (pixel * ylab[gridind].lfac[i] >=  2 * im->text_prop[TEXT_PROP_AXIS].size) {
+	       if (pixel * ylab[gridind].lfac[i] >=  2.5 * im->text_prop[TEXT_PROP_AXIS].size) {
 		  im->ygrid_scale.labfact =  ylab[gridind].lfac[i];
 		  break;
 	       }		          
@@ -1610,14 +1614,16 @@ int draw_horizontal_grid(image_desc_t *im)
    
     int sgrid = (int)( im->minval / im->ygrid_scale.gridstep - 1);
     int egrid = (int)( im->maxval / im->ygrid_scale.gridstep + 1);
+    double MaxY;
     scaledstep = im->ygrid_scale.gridstep/im->magfact;
+    MaxY = scaledstep*(double)im->viewfactor*(double)egrid;
     for (i = sgrid; i <= egrid; i++){
        double Y0=ytr(im,im->ygrid_scale.gridstep*i);
        if ( Y0 >= im->yorigin-im->ysize
 	         && Y0 <= im->yorigin){       
 	    if(i % im->ygrid_scale.labfact == 0){		
 		if (i==0 || im->symbol == ' ') {
-		    if(scaledstep < 1){
+		    if(MaxY < 10) {
 			if(im->extra_flags & ALTYGRID) {
 			    sprintf(graph_label,im->ygrid_scale.labfmt,scaledstep*im->viewfactor*i);
 			}
@@ -1628,7 +1634,7 @@ int draw_horizontal_grid(image_desc_t *im)
 			sprintf(graph_label,"%4.0f",scaledstep*im->viewfactor*i);
 		    }
 		}else {
-		    if(scaledstep < 1){
+		    if(MaxY < 10){
 			sprintf(graph_label,"%4.1f %c",scaledstep*im->viewfactor*i, im->symbol);
 		    } else {
 			sprintf(graph_label,"%4.0f %c",scaledstep*im->viewfactor*i, im->symbol);
@@ -1923,7 +1929,7 @@ grid_paint(image_desc_t   *im)
 	} else {
 		res = draw_horizontal_grid(im);
 	}
-
+	
 	/* dont draw horizontal grid if there is no min and max val */
 	if (! res ) {
 	  char *nodata = "No Data found";
@@ -1938,7 +1944,7 @@ grid_paint(image_desc_t   *im)
 
     /* yaxis unit description */
     gfx_new_text( im->canvas,
-                  7, (im->yorigin - im->ysize/2),
+                  10, (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, 
@@ -1948,12 +1954,20 @@ 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,
 		  GFX_H_CENTER, GFX_V_CENTER,
 		  im->title);
+    /* rrdtool 'logo' */
+    gfx_new_text( im->canvas,
+		  im->ximg-7, 7,
+		  ( im->graph_col[GRC_FONT] & 0xffffff00 ) | 0x00000044,
+		  im->text_prop[TEXT_PROP_AXIS].font,
+		  5.5, im->tabwidth, 270,
+		  GFX_H_RIGHT, GFX_V_TOP,
+		  "RRDTOOL / TOBI OETIKER");
     
     /* graph labels */
     if( !(im->extra_flags & NOLEGEND) & !(im->extra_flags & ONLY_GRAPH) ) {
@@ -1975,30 +1989,38 @@ grid_paint(image_desc_t   *im)
                     if (	   im->gdes[i].gf != GF_PRINT &&
 				   im->gdes[i].gf != GF_GPRINT &&
                                    im->gdes[i].gf != GF_COMMENT) {
-                            int boxH, boxV;
+                            int boxL, boxH, boxV;
                             
-                            boxH = gfx_get_text_width(im->canvas, 0,
+                            boxL = gfx_get_text_width(im->canvas, 0,
                                                       im->text_prop[TEXT_PROP_LEGEND].font,
                                                       im->text_prop[TEXT_PROP_LEGEND].size,
-                                                      im->tabwidth,"M", 0)*1.2;
-                            boxV = boxH;
+                                                      im->tabwidth,"oo", 0);
+			    boxH = boxL / 1.9;
+                            boxV = boxH+1;
                             
                             /* make sure transparent colors show up all the same */
+			     node = gfx_new_area(im->canvas,
+                                                X0-1,Y0-boxV,
+                                                X0-1,Y0+1,
+                                                X0+boxL+0.5,Y0+1,
+                                                im->graph_col[GRC_BACK]);
+                            gfx_add_point ( node, X0+boxL+0.5, Y0-boxV );
 			    node = gfx_new_area(im->canvas,
-                                                X0,Y0-boxV,
-                                                X0,Y0,
+                                                X0-1,Y0-boxV,
+                                                X0-1,Y0,
                                                 X0+boxH,Y0,
                                                 im->graph_col[GRC_CANVAS]);
                             gfx_add_point ( node, X0+boxH, Y0-boxV );
 
                             node = gfx_new_area(im->canvas,
-                                                X0,Y0-boxV,
-                                                X0,Y0,
+                                                X0-1,Y0-boxV,
+                                                X0-1,Y0,
                                                 X0+boxH,Y0,
                                                 im->gdes[i].col);
                             gfx_add_point ( node, X0+boxH, Y0-boxV );
                             node = gfx_new_line(im->canvas,
-                                                X0,Y0-boxV, X0,Y0,
+                                                X0-1,Y0-boxV,
+                                                X0-1,Y0,
                                                 1,im->graph_col[GRC_FONT]);
                             gfx_add_point(node,X0+boxH,Y0);
                             gfx_add_point(node,X0+boxH,Y0-boxV);
@@ -2117,8 +2139,8 @@ 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
@@ -2140,10 +2162,6 @@ 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);
     }
 
 
@@ -2152,12 +2170,13 @@ 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) {
@@ -2171,7 +2190,7 @@ 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;
 	}
     }
 
@@ -2207,7 +2226,8 @@ 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;
@@ -2239,8 +2259,8 @@ 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;
@@ -2252,8 +2272,6 @@ 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) {
@@ -2369,11 +2387,11 @@ graph_paint(image_desc_t *im, char ***calcpr)
   
   node=gfx_new_area ( im->canvas,
                       0, 0,
-                      im->ximg, 0,
-                      im->ximg, im->yimg,
+                      0, im->yimg,
+		      im->ximg, im->yimg,                      
                       im->graph_col[GRC_BACK]);
 
-  gfx_add_point(node,0, im->yimg);
+  gfx_add_point(node,im->ximg, 0);
 
 #ifdef WITH_PIECHART
   if (piechart != 2) {
@@ -2446,13 +2464,13 @@ graph_paint(image_desc_t *im, char ***calcpr)
       } /* for */
 
       /* *******************************************************
-                   ___ 
-		  |   |    ___
+       a           ___. (a,t) 
+  		  |   |    ___
               ____|   |   |   |
               |       |___|
-       -------|---------------------------------------      
+       -------|--t-1--t--------------------------------      
                       
-      if we know the value of y at time t was a then 
+      if we know the value at time t was a then 
       we draw a square from t-1 to t with the value a.
 
       ********************************************************* */
@@ -2460,47 +2478,80 @@ graph_paint(image_desc_t *im, char ***calcpr)
         /* GF_LINE and friend */
         if(stack_gf == GF_LINE ){
           node = NULL;
-          for(ii=1;ii<im->xsize;ii++){
-	    if (isnan(im->gdes[i].p_data[ii])){
+          for(ii=1;ii<im->xsize;ii++){	    
+	    if (isnan(im->gdes[i].p_data[ii]) || (im->slopemode==1 && isnan(im->gdes[i].p_data[ii-1]))){
 		node = NULL;
 		continue;
 	    }
             if ( node == NULL ) {
-                 node = gfx_new_line(im->canvas,
+		if ( im->slopemode == 0 ){
+                  node = gfx_new_line(im->canvas,
                                     ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
                                     ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
                                     im->gdes[i].linewidth,
                                     im->gdes[i].col);
+	        } else {
+                  node = gfx_new_line(im->canvas,
+                                    ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii-1]),
+                                    ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]),
+                                    im->gdes[i].linewidth,
+                                    im->gdes[i].col);
+	        }
              } else {
-               gfx_add_point(node,ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
+	       if ( im->slopemode==0 ){
+                   gfx_add_point(node,ii-1+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
+	       };
                gfx_add_point(node,ii+im->xorigin,ytr(im,im->gdes[i].p_data[ii]));
              };
 
           }
         } else {
-          for(ii=1;ii<im->xsize;ii++){
+	  double ybase0 = DNAN,ytop0=DNAN;
+          for(ii=0;ii<im->xsize;ii++){
 	    /* keep things simple for now, just draw these bars
 	       do not try to build a big and complex area */
-	    float ybase,ytop;
+	    double ybase,ytop;
+	    if ( im->slopemode == 0 && ii==0){
+		continue;
+	    }
 	    if ( isnan(im->gdes[i].p_data[ii]) ) {
+		ybase0 = DNAN;
 		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);
             }
             if ( ybase == ytop ){
-		continue;
+		ybase0 = DNAN;
+		continue;	
 	    }
-            node = gfx_new_area(im->canvas,
-                                ii-1+im->xorigin,ybase,
-                                ii-1+im->xorigin,ytop,
-                                ii+im->xorigin,ytop,				
+	    /* every area has to be wound clock-wise,
+	       so we have to make sur base remains base  */		
+	    if (ybase > ytop){
+		double extra = ytop;
+		ytop = ybase;
+		ybase = extra;
+	    }
+	    if ( im->slopemode == 0){
+		 ybase0 = ybase;
+		 ytop0 = ytop;
+	    }
+	    if ( !isnan(ybase0) ){
+	            node = gfx_new_area(im->canvas,
+                                (double)ii-1.2+(double)im->xorigin,ybase0-0.2,
+                                (double)ii-1.2+(double)im->xorigin,ytop0+0.2,
+                                (double)ii+0.2+(double)im->xorigin,ytop+0.2,
                                 im->gdes[i].col
                                );
-            gfx_add_point(node,ii+im->xorigin,ybase);
+        	    gfx_add_point(node,
+			        (double)ii+0.02+im->xorigin,ybase-0.2
+                              );
+            }
+	    ybase0=ybase;
+	    ytop0=ytop;
           }             
         } /* else GF_LINE */
       } /* if color != 0x0 */
@@ -2540,12 +2591,14 @@ 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++){    
@@ -2581,7 +2634,7 @@ graph_paint(image_desc_t *im, char ***calcpr)
   
   if (strcmp(im->graphfile,"-")==0) {
     fo = im->graphhandle ? im->graphhandle : stdout;
-#if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
+#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
     /* Change translation mode for stdout to BINARY */
     _setmode( _fileno( fo ), O_BINARY );
 #endif
@@ -2592,7 +2645,7 @@ graph_paint(image_desc_t *im, char ***calcpr)
       return (-1);
     }
   }
-  gfx_render (im->canvas,im->ximg,im->yimg,0x0,fo);
+  gfx_render (im->canvas,im->ximg,im->yimg,0x00000000,fo);
   if (strcmp(im->graphfile,"-") != 0)
     fclose(fo);
   return 0;
@@ -2671,7 +2724,6 @@ 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;
     
@@ -2762,7 +2814,7 @@ 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;
@@ -2770,6 +2822,7 @@ rrd_graph_init(image_desc_t *im)
     im->gridfit = 1;
     im->imginfo = NULL;
     im->lazy = 0;
+    im->slopemode = 0;
     im->logarithmic = 0;
     im->ygridstep = DNAN;
     im->draw_x_grid = 1;
@@ -2786,7 +2839,7 @@ rrd_graph_init(image_desc_t *im)
     for(i=0;i<DIM(graph_col);i++)
         im->graph_col[i]=graph_col[i];
 
-#if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
+#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
     {
             char *windir; 
 	    char rrd_win_default_font[1000];
@@ -2795,7 +2848,8 @@ 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';
@@ -2829,6 +2883,7 @@ 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);
@@ -2861,6 +2916,7 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
             {"only-graph", no_argument,       0,  'j'},
 	    {"alt-y-grid", no_argument,       0,  'Y'},
             {"no-minor",   no_argument,       0,  'I'},
+	    {"slope-mode", no_argument,	      0,  'E'},
 	    {"alt-autoscale", no_argument,    0,  'A'},
 	    {"alt-autoscale-max", no_argument, 0, 'M'},
             {"no-gridfit", no_argument,       0,   'N'},
@@ -2868,13 +2924,15 @@ 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:zgjFYAMEX:L:S:T:NR:B:",
 			  long_options, &option_index);
 
 	if (opt == EOF)
@@ -3038,6 +3096,10 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
 	case 'z':
 	    im->lazy = 1;
 	    break;
+	case 'E':
+	    im->slopemode = 1;
+	    break;
+
 	case 'o':
 	    im->logarithmic = 1;
 	    if (isnan(im->minval))
@@ -3050,6 +3112,22 @@ rrd_graph_options(int argc, char *argv[],image_desc_t *im)
                 int ci;
 		int col_len = col_end - col_start;
 		switch (col_len){
+			case 3:
+				color = (
+					((color & 0xF00) * 0x110000) |
+					((color & 0x0F0) * 0x011000) |
+					((color & 0x00F) * 0x001100) |
+					0x000000FF
+					);
+				break;
+			case 4:
+				color = (
+					((color & 0xF000) * 0x11000) |
+					((color & 0x0F00) * 0x01100) |
+					((color & 0x00F0) * 0x00110) |
+					((color & 0x000F) * 0x00011)
+					);
+				break;
 			case 6:
 		        	color = (color << 8) + 0xff /* shift left by 8 */;
 				break;
@@ -3114,6 +3192,24 @@ 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);