1 #ifndef _RRD_GRAPH_H
2 #define _RRD_GRAPH_H
4 #include "rrd_tool.h"
5 #include "rrd_rpncalc.h"
6 #include "rrd_gfx.h"
8 #define MAX_VNAME_LEN 29
9 #define DEF_NAM_FMT "%29[-_A-Za-z0-9]"
11 #define ALTYGRID 0x01 /* use alternative y grid algorithm */
12 #define ALTAUTOSCALE 0x02 /* use alternative algorithm to find lower and upper bounds */
13 #define ALTAUTOSCALE_MAX 0x04 /* use alternative algorithm to find upper bounds */
14 #define NOLEGEND 0x08 /* use no legend */
15 #define NOMINOR 0x20 /* Turn off minor gridlines */
16 #define ONLY_GRAPH 0x24 /* use only graph */
19 enum tmt_en {TMT_SECOND=0,TMT_MINUTE,TMT_HOUR,TMT_DAY,
20 TMT_WEEK,TMT_MONTH,TMT_YEAR};
22 enum grc_en {GRC_CANVAS=0,GRC_BACK,GRC_SHADEA,GRC_SHADEB,
23 GRC_GRID,GRC_MGRID,GRC_FONT,GRC_FRAME,GRC_ARROW,__GRC_END__};
25 #define MGRIDWIDTH 0.6
26 #define GRIDWIDTH 0.4
28 enum gf_en {GF_PRINT=0,GF_GPRINT,GF_COMMENT,GF_HRULE,GF_VRULE,GF_LINE,
29 GF_AREA,GF_STACK,GF_TICK,
30 GF_DEF, GF_CDEF, GF_VDEF, GF_SHIFT,
31 GF_PART, GF_XPORT};
33 enum vdef_op_en {
34 VDEF_MAXIMUM /* like the MAX in (G)PRINT */
35 ,VDEF_MINIMUM /* like the MIN in (G)PRINT */
36 ,VDEF_AVERAGE /* like the AVERAGE in (G)PRINT */
37 ,VDEF_PERCENT /* Nth percentile */
38 ,VDEF_TOTAL /* average multiplied by time */
39 ,VDEF_FIRST /* first non-unknown value and time */
40 ,VDEF_LAST /* last non-unknown value and time */
41 };
42 enum text_prop_en { TEXT_PROP_DEFAULT=0, /* default settings */
43 TEXT_PROP_TITLE, /* properties for the title */
44 TEXT_PROP_AXIS, /* for the numbers next to the axis */
45 TEXT_PROP_UNIT, /* for the vertical unit description */
46 TEXT_PROP_LEGEND, /* fot the legend below the graph */
47 TEXT_PROP_LAST };
49 typedef struct text_prop_t {
50 double size;
51 char * font;
52 } text_prop_t;
55 typedef struct vdef_t {
56 enum vdef_op_en op;
57 double param; /* parameter for function, if applicable */
58 double val; /* resulting value */
59 time_t when; /* timestamp, if applicable */
60 } vdef_t;
62 typedef struct xlab_t {
63 long minsec; /* minimum sec per pix */
64 enum tmt_en gridtm; /* grid interval in what ?*/
65 long gridst; /* how many whats per grid*/
66 enum tmt_en mgridtm; /* label interval in what ?*/
67 long mgridst; /* how many whats per label*/
68 enum tmt_en labtm; /* label interval in what ?*/
69 long labst; /* how many whats per label*/
70 long precis; /* label precision -> label placement*/
71 char *stst; /* strftime string*/
72 } xlab_t;
74 typedef struct ygrid_scale_t { /* y axis grid scaling info */
75 double gridstep;
76 int labfact;
77 char labfmt[64];
78 } ygrid_scale_t;
80 /* sensible y label intervals ...*/
82 typedef struct ylab_t {
83 double grid; /* grid spacing */
84 int lfac[4]; /* associated label spacing*/
85 } ylab_t;
88 /* this structure describes the elements which can make up a graph.
89 because they are quite diverse, not all elements will use all the
90 possible parts of the structure. */
91 #ifdef HAVE_SNPRINTF
92 #define FMT_LEG_LEN 200
93 #else
94 #define FMT_LEG_LEN 2000
95 #endif
97 typedef struct graph_desc_t {
98 enum gf_en gf; /* graphing function */
99 int stack; /* boolean */
100 int debug; /* boolean */
101 char vname[MAX_VNAME_LEN+1]; /* name of the variable */
102 long vidx; /* gdes reference */
103 char rrd[255]; /* name of the rrd_file containing data */
104 char ds_nam[DS_NAM_SIZE]; /* data source name */
105 long ds; /* data source number */
106 enum cf_en cf; /* consolidation function */
107 enum cf_en cf_reduce; /* consolidation function for reduce_data() */
108 gfx_color_t col; /* graph color */
109 char format[FMT_LEG_LEN+5]; /* format for PRINT AND GPRINT */
110 char legend[FMT_LEG_LEN+5]; /* legend*/
111 double leg_x,leg_y; /* location of legend */
112 double yrule; /* value for y rule line and for VDEF */
113 time_t xrule; /* time for x rule line and for VDEF */
114 vdef_t vf; /* instruction for VDEF function */
115 rpnp_t *rpnp; /* instructions for CDEF function */
117 /* SHIFT implementation */
118 int shidx; /* gdes reference for offset (-1 --> constant) */
119 time_t shval; /* offset if shidx is -1 */
120 time_t shift; /* current shift applied */
122 /* description of data fetched for the graph element */
123 time_t start,end; /* timestaps for first and last data element */
124 unsigned long step; /* time between samples */
125 unsigned long ds_cnt; /* how many data sources are there in the fetch */
126 long data_first; /* first pointer to this data */
127 char **ds_namv; /* name of datasources in the fetch. */
128 rrd_value_t *data; /* the raw data drawn from the rrd */
129 rrd_value_t *p_data; /* processed data, xsize elments */
130 double linewidth; /* linewideth */
131 } graph_desc_t;
133 typedef struct image_desc_t {
135 /* configuration of graph */
137 char graphfile[MAXPATH]; /* filename for graphic */
138 FILE *graphhandle; /* FILE to use if filename is "-" */
139 long xsize,ysize,piesize; /* graph area size in pixels */
140 gfx_color_t graph_col[__GRC_END__]; /* real colors for the graph */
141 text_prop_t text_prop[TEXT_PROP_LAST]; /* text properties */
142 char ylegend[200]; /* legend along the yaxis */
143 char title[200]; /* title for graph */
144 int draw_x_grid; /* no x-grid at all */
145 int draw_y_grid; /* no x-grid at all */
146 double grid_dash_on, grid_dash_off;
147 xlab_t xlab_user; /* user defined labeling for xaxis */
148 char xlab_form[200]; /* format for the label on the xaxis */
150 double ygridstep; /* user defined step for y grid */
151 int ylabfact; /* every how many y grid shall a label be written ? */
152 double tabwidth; /* tabwdith */
153 time_t start,end; /* what time does the graph cover */
154 unsigned long step; /* any preference for the default step ? */
155 rrd_value_t minval,maxval; /* extreme values in the data */
156 int rigid; /* do not expand range even with
157 values outside */
158 ygrid_scale_t ygrid_scale; /* calculated y axis grid info */
159 int gridfit; /* adjust y-axis range etc so all
160 grindlines falls in integer pixel values */
161 char* imginfo; /* construct an <IMG ... tag and return
162 as first retval */
163 int lazy; /* only update the image if there is
164 reasonable probablility that the
165 existing one is out of date */
166 int logarithmic; /* scale the yaxis logarithmic */
168 /* status information */
170 long xorigin,yorigin;/* where is (0,0) of the graph */
171 long pie_x,pie_y; /* where is the centerpoint */
172 long ximg,yimg; /* total size of the image */
173 double magfact; /* numerical magnitude*/
174 long base; /* 1000 or 1024 depending on what we graph */
175 char symbol; /* magnitude symbol for y-axis */
176 int unitsexponent; /* 10*exponent for units on y-asis */
177 int extra_flags; /* flags for boolean options */
178 /* data elements */
180 long prt_c; /* number of print elements */
181 long gdes_c; /* number of graphics elements */
182 graph_desc_t *gdes; /* points to an array of graph elements */
183 gfx_canvas_t *canvas; /* graphics library */
184 } image_desc_t;
186 /* Prototypes */
187 int xtr(image_desc_t *,time_t);
188 double ytr(image_desc_t *, double);
189 enum gf_en gf_conv(char *);
190 enum gfx_if_en if_conv(char *);
191 enum tmt_en tmt_conv(char *);
192 enum grc_en grc_conv(char *);
193 enum text_prop_en text_prop_conv(char *);
194 int im_free(image_desc_t *);
195 void auto_scale( image_desc_t *, double *, char **, double *);
196 void si_unit( image_desc_t *);
197 void expand_range(image_desc_t *);
198 void apply_gridfit(image_desc_t *);
199 void reduce_data( enum cf_en, unsigned long, time_t *, time_t *, unsigned long *, unsigned long *, rrd_value_t **);
200 int data_fetch( image_desc_t *);
201 long find_var(image_desc_t *, char *);
202 long find_var_wrapper(void *arg1, char *key);
203 long lcd(long *);
204 int data_calc( image_desc_t *);
205 int data_proc( image_desc_t *);
206 time_t find_first_time( time_t, enum tmt_en, long);
207 time_t find_next_time( time_t, enum tmt_en, long);
208 int print_calc(image_desc_t *, char ***);
209 int leg_place(image_desc_t *);
210 int calc_horizontal_grid(image_desc_t *);
211 int draw_horizontal_grid(image_desc_t *);
212 int horizontal_log_grid(image_desc_t *);
213 void vertical_grid(image_desc_t *);
214 void axis_paint(image_desc_t *);
215 void grid_paint(image_desc_t *);
216 int lazy_check(image_desc_t *);
217 int graph_paint(image_desc_t *, char ***);
218 void pie_part(image_desc_t *, gfx_color_t, double, double, double, double, double);
219 int gdes_alloc(image_desc_t *);
220 int scan_for_col(char *, int, char *);
221 int rrd_graph(int, char **, char ***, int *, int *, FILE *);
222 void rrd_graph_init(image_desc_t *);
223 void rrd_graph_options(int, char **, image_desc_t *);
224 void rrd_graph_script(int, char **, image_desc_t *, int);
225 int rrd_graph_check_vname(image_desc_t *, char *, char *);
226 int rrd_graph_color(image_desc_t *, char *, char *, int);
227 int rrd_graph_legend(graph_desc_t *, char *);
228 int bad_format(char *);
229 int vdef_parse(struct graph_desc_t *,char *);
230 int vdef_calc(image_desc_t *, int);
231 int vdef_percent_compar(const void *,const void *);
232 int graph_size_location(image_desc_t *, int, int);
234 #endif