From 88cc1edb85219b8b3ca287cad88718e7d72ece80 Mon Sep 17 00:00:00 2001 From: oetiker Date: Wed, 24 Apr 2002 20:49:00 +0000 Subject: [PATCH] Modification of rrd_graph.c/h so it uses dashes for gridlines much like rrdtool 1.0 Avoids drawing minor vertical gridlines where a major gridline is to avoid artifacts from having the grey line beneath the red one. Patches src/rrd_graph.c and src/rrd_graph.h -- Peter Speck text_prop[TEXT_PROP_AXIS].size, im->tabwidth, 0.0, GFX_H_RIGHT, GFX_V_CENTER, graph_label ); - gfx_new_line ( im->canvas, + gfx_new_dashed_line ( im->canvas, X0-2,Y0, X1+2,Y0, - MGRIDWIDTH, im->graph_col[GRC_MGRID] ); + MGRIDWIDTH, im->graph_col[GRC_MGRID], + im->grid_dash_on, im->grid_dash_off); } else { - gfx_new_line ( im->canvas, + gfx_new_dashed_line ( im->canvas, X0-1,Y0, X1+1,Y0, - GRIDWIDTH, im->graph_col[GRC_GRID] ); + GRIDWIDTH, im->graph_col[GRC_GRID], + im->grid_dash_on, im->grid_dash_off); } } @@ -1629,10 +1631,11 @@ horizontal_log_grid(image_desc_t *im) while(yloglab[minoridx][++i] > 0){ Y0 = ytr(im,value * yloglab[minoridx][i]); if (Y0 <= im->yorigin - im->ysize) break; - gfx_new_line ( im->canvas, + gfx_new_dashed_line ( im->canvas, X0-1,Y0, X1+1,Y0, - GRIDWIDTH, im->graph_col[GRC_GRID] ); + GRIDWIDTH, im->graph_col[GRC_GRID], + im->grid_dash_on, im->grid_dash_off); } } @@ -1646,10 +1649,11 @@ horizontal_log_grid(image_desc_t *im) while(yloglab[majoridx][++i] > 0){ Y0 = ytr(im,value * yloglab[majoridx][i]); if (Y0 <= im->yorigin - im->ysize) break; - gfx_new_line ( im->canvas, + gfx_new_dashed_line ( im->canvas, X0-2,Y0, X1+2,Y0, - MGRIDWIDTH, im->graph_col[GRC_MGRID] ); + MGRIDWIDTH, im->graph_col[GRC_MGRID], + im->grid_dash_on, im->grid_dash_off); sprintf(graph_label,"%3.0e",value * yloglab[majoridx][i]); gfx_new_text ( im->canvas, @@ -1670,7 +1674,7 @@ vertical_grid( image_desc_t *im ) { int xlab_sel; /* which sort of label and grid ? */ - time_t ti, tilab; + time_t ti, tilab, timajor; long factor; char graph_label[100]; double X0,Y0,Y1; /* points for filled graph and more*/ @@ -1703,14 +1707,24 @@ vertical_grid( /* paint the minor grid */ for(ti = find_first_time(im->start, im->xlab_user.gridtm, - im->xlab_user.gridst); + im->xlab_user.gridst), + timajor = find_first_time(im->start, + im->xlab_user.mgridtm, + im->xlab_user.mgridst); ti < im->end; ti = find_next_time(ti,im->xlab_user.gridtm,im->xlab_user.gridst) ){ /* are we inside the graph ? */ if (ti < im->start || ti > im->end) continue; + while (timajor < ti) { + timajor = find_next_time(timajor, + im->xlab_user.mgridtm, im->xlab_user.mgridst); + } + if (ti == timajor) continue; /* skip as falls on major grid line */ X0 = xtr(im,ti); - gfx_new_line(im->canvas,X0,Y0+1, X0,Y1-1,GRIDWIDTH, im->graph_col[GRC_GRID]); + gfx_new_dashed_line(im->canvas,X0,Y0+1, X0,Y1-1,GRIDWIDTH, + im->graph_col[GRC_GRID], + im->grid_dash_on, im->grid_dash_off); } @@ -1724,7 +1738,9 @@ vertical_grid( /* are we inside the graph ? */ if (ti < im->start || ti > im->end) continue; X0 = xtr(im,ti); - gfx_new_line(im->canvas,X0,Y0+2, X0,Y1-2,MGRIDWIDTH, im->graph_col[GRC_MGRID]); + gfx_new_dashed_line(im->canvas,X0,Y0+3, X0,Y1-2,MGRIDWIDTH, + im->graph_col[GRC_MGRID], + im->grid_dash_on, im->grid_dash_off); } /* paint the labels below the graph */ @@ -2605,6 +2621,8 @@ rrd_graph_init(image_desc_t *im) im->gdes_c = 0; im->gdes = NULL; im->canvas = gfx_new_canvas(); + im->grid_dash_on = 1; + im->grid_dash_off = 1; for(i=0;igraph_col[i]=graph_col[i]; diff --git a/src/rrd_graph.h b/src/rrd_graph.h index 6fac38d..e61d6b0 100644 --- a/src/rrd_graph.h +++ b/src/rrd_graph.h @@ -129,6 +129,7 @@ typedef struct image_desc_t { char title[200]; /* title for graph */ int draw_x_grid; /* no x-grid at all */ int draw_y_grid; /* no x-grid at all */ + double grid_dash_on, grid_dash_off; xlab_t xlab_user; /* user defined labeling for xaxis */ char xlab_form[200]; /* format for the label on the xaxis */ -- 2.11.0