2 #include "rrd_rpncalc.h"
5 #define MAX_VNAME_LEN 29
6 #define DEF_NAM_FMT "%29[_A-Za-z0-9]"
8 #define ALTYGRID 0x01 /* use alternative y grid algorithm */
9 #define ALTAUTOSCALE 0x02 /* use alternative algorithm to find lower and upper bounds */
10 #define ALTAUTOSCALE_MAX 0x04 /* use alternative algorithm to find upper bounds */
11 #define NOLEGEND 0x08 /* use no legend */
14 enum tmt_en {TMT_SECOND=0,TMT_MINUTE,TMT_HOUR,TMT_DAY,
15 TMT_WEEK,TMT_MONTH,TMT_YEAR};
17 enum grc_en {GRC_CANVAS=0,GRC_BACK,GRC_SHADEA,GRC_SHADEB,
18 GRC_GRID,GRC_MGRID,GRC_FONT,GRC_FRAME,GRC_ARROW,__GRC_END__};
20 #define MGRIDWIDTH 0.6
23 enum gf_en {GF_PRINT=0,GF_GPRINT,GF_COMMENT,GF_HRULE,GF_VRULE,GF_LINE,
24 GF_AREA,GF_STACK,GF_TICK,
25 GF_DEF, GF_CDEF, GF_VDEF,
29 VDEF_MAXIMUM /* like the MAX in (G)PRINT */
30 ,VDEF_MINIMUM /* like the MIN in (G)PRINT */
31 ,VDEF_AVERAGE /* like the AVERAGE in (G)PRINT */
32 ,VDEF_PERCENT /* Nth percentile */
33 ,VDEF_TOTAL /* average multiplied by time */
34 ,VDEF_FIRST /* first non-unknown value and time */
35 ,VDEF_LAST /* last non-unknown value and time */
37 enum text_prop_en { TEXT_PROP_DEFAULT=0, /* default settings */
38 TEXT_PROP_TITLE, /* properties for the title */
39 TEXT_PROP_AXIS, /* for the numbers next to the axis */
40 TEXT_PROP_UNIT, /* for the vertical unit description */
41 TEXT_PROP_LEGEND, /* fot the legend below the graph */
44 typedef struct text_prop_t {
50 typedef struct vdef_t {
52 double param; /* parameter for function, if applicable */
53 double val; /* resulting value */
54 time_t when; /* timestamp, if applicable */
57 typedef struct xlab_t {
58 long minsec; /* minimum sec per pix */
59 enum tmt_en gridtm; /* grid interval in what ?*/
60 long gridst; /* how many whats per grid*/
61 enum tmt_en mgridtm; /* label interval in what ?*/
62 long mgridst; /* how many whats per label*/
63 enum tmt_en labtm; /* label interval in what ?*/
64 long labst; /* how many whats per label*/
65 long precis; /* label precision -> label placement*/
66 char *stst; /* strftime string*/
69 typedef struct ygrid_scale_t { /* y axis grid scaling info */
75 /* sensible y label intervals ...*/
77 typedef struct ylab_t {
78 double grid; /* grid spacing */
79 int lfac[4]; /* associated label spacing*/
83 /* this structure describes the elements which can make up a graph.
84 because they are quite diverse, not all elements will use all the
85 possible parts of the structure. */
87 #define FMT_LEG_LEN 200
89 #define FMT_LEG_LEN 2000
92 typedef struct graph_desc_t {
93 enum gf_en gf; /* graphing function */
94 char vname[MAX_VNAME_LEN+1]; /* name of the variable */
95 long vidx; /* gdes reference */
96 char rrd[255]; /* name of the rrd_file containing data */
97 char ds_nam[DS_NAM_SIZE]; /* data source name */
98 long ds; /* data source number */
99 enum cf_en cf; /* consolidation function */
100 gfx_color_t col; /* graph color */
101 char format[FMT_LEG_LEN+5]; /* format for PRINT AND GPRINT */
102 char legend[FMT_LEG_LEN+5]; /* legend*/
103 double leg_x,leg_y; /* location of legend */
104 double yrule; /* value for y rule line and for VDEF */
105 time_t xrule; /* time for x rule line and for VDEF */
106 vdef_t vf; /* instruction for VDEF function */
107 rpnp_t *rpnp; /* instructions for CDEF function */
109 /* description of data fetched for the graph element */
110 time_t start,end; /* timestaps for first and last data element */
111 unsigned long step; /* time between samples */
112 unsigned long ds_cnt; /* how many data sources are there in the fetch */
113 long data_first; /* first pointer to this data */
114 char **ds_namv; /* name of datasources in the fetch. */
115 rrd_value_t *data; /* the raw data drawn from the rrd */
116 rrd_value_t *p_data; /* processed data, xsize elments */
117 double linewidth; /* linewideth */
120 typedef struct image_desc_t {
122 /* configuration of graph */
124 char graphfile[MAXPATH]; /* filename for graphic */
125 long xsize,ysize,piesize; /* graph area size in pixels */
126 gfx_color_t graph_col[__GRC_END__]; /* real colors for the graph */
127 text_prop_t text_prop[TEXT_PROP_LAST]; /* text properties */
128 char ylegend[200]; /* legend along the yaxis */
129 char title[200]; /* title for graph */
130 int draw_x_grid; /* no x-grid at all */
131 int draw_y_grid; /* no x-grid at all */
132 double grid_dash_on, grid_dash_off;
133 xlab_t xlab_user; /* user defined labeling for xaxis */
134 char xlab_form[200]; /* format for the label on the xaxis */
136 double ygridstep; /* user defined step for y grid */
137 int ylabfact; /* every how many y grid shall a label be written ? */
138 double tabwidth; /* tabwdith */
139 time_t start,end; /* what time does the graph cover */
140 unsigned long step; /* any preference for the default step ? */
141 rrd_value_t minval,maxval; /* extreme values in the data */
142 int rigid; /* do not expand range even with
144 ygrid_scale_t ygrid_scale; /* calculated y axis grid info */
145 int gridfit; /* adjust y-axis range etc so all
146 grindlines falls in integer pixel values */
147 char* imginfo; /* construct an <IMG ... tag and return
149 int lazy; /* only update the image if there is
150 reasonable probablility that the
151 existing one is out of date */
152 int logarithmic; /* scale the yaxis logarithmic */
154 /* status information */
156 long xorigin,yorigin;/* where is (0,0) of the graph */
157 long pie_x,pie_y; /* where is the centerpoint */
158 long ximg,yimg; /* total size of the image */
159 double magfact; /* numerical magnitude*/
160 long base; /* 1000 or 1024 depending on what we graph */
161 char symbol; /* magnitude symbol for y-axis */
162 int unitsexponent; /* 10*exponent for units on y-asis */
163 int extra_flags; /* flags for boolean options */
166 long prt_c; /* number of print elements */
167 long gdes_c; /* number of graphics elements */
168 graph_desc_t *gdes; /* points to an array of graph elements */
169 gfx_canvas_t *canvas; /* graphics library */
173 int xtr(image_desc_t *,time_t);
174 double ytr(image_desc_t *, double);
175 enum gf_en gf_conv(char *);
176 enum gfx_if_en if_conv(char *);
177 enum tmt_en tmt_conv(char *);
178 enum grc_en grc_conv(char *);
179 enum grc_en text_prop_conv(char *);
180 int im_free(image_desc_t *);
181 void auto_scale( image_desc_t *, double *, char **, double *);
182 void si_unit( image_desc_t *);
183 void expand_range(image_desc_t *);
184 void apply_gridfit(image_desc_t *);
185 void reduce_data( enum cf_en, unsigned long, time_t *, time_t *, unsigned long *, unsigned long *, rrd_value_t **);
186 int data_fetch( image_desc_t *);
187 long find_var(image_desc_t *, char *);
188 long find_var_wrapper(void *arg1, char *key);
190 int data_calc( image_desc_t *);
191 int data_proc( image_desc_t *);
192 time_t find_first_time( time_t, enum tmt_en, long);
193 time_t find_next_time( time_t, enum tmt_en, long);
194 int print_calc(image_desc_t *, char ***);
195 int leg_place(image_desc_t *);
196 int calc_horizontal_grid(image_desc_t *);
197 int draw_horizontal_grid(image_desc_t *);
198 int horizontal_log_grid(image_desc_t *);
199 void vertical_grid(image_desc_t *);
200 void axis_paint(image_desc_t *);
201 void grid_paint(image_desc_t *);
202 int lazy_check(image_desc_t *);
203 int graph_paint(image_desc_t *, char ***);
204 void pie_part(image_desc_t *, gfx_color_t, double, double, double, double, double);
205 int gdes_alloc(image_desc_t *);
206 int scan_for_col(char *, int, char *);
207 int rrd_graph(int, char **, char ***, int *, int *);
208 void rrd_graph_init(image_desc_t *);
209 void rrd_graph_options(int, char **, image_desc_t *);
210 void rrd_graph_script(int, char **, image_desc_t *);
211 int rrd_graph_check_vname(image_desc_t *, char *, char *);
212 int rrd_graph_check_CF(image_desc_t *, char *, char *);
213 int rrd_graph_color(image_desc_t *, char *, char *, int);
214 int rrd_graph_legend(graph_desc_t *, char *);
215 int bad_format(char *);
216 int vdef_parse(struct graph_desc_t *,char *);
217 int vdef_calc(image_desc_t *, int);
218 int vdef_percent_compar(const void *,const void *);
219 int graph_size_location(image_desc_t *, int, int);