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 255
9 #define DEF_NAM_FMT "%255[-_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 0x10 /* Turn off minor gridlines */
16 #define ONLY_GRAPH 0x20 /* use only graph */
17 #define FORCE_RULES_LEGEND 0x40 /* force printing of HRULE and VRULE legend */
19 #define FORCE_UNITS 0x80 /* mask for all FORCE_UNITS_* flags */
20 #define FORCE_UNITS_SI 0x80 /* force use of SI units in Y axis (no effect in linear graph, SI instead of E in log graph) */
22 enum tmt_en {TMT_SECOND=0,TMT_MINUTE,TMT_HOUR,TMT_DAY,
23 TMT_WEEK,TMT_MONTH,TMT_YEAR};
25 enum grc_en {GRC_CANVAS=0,GRC_BACK,GRC_SHADEA,GRC_SHADEB,
26 GRC_GRID,GRC_MGRID,GRC_FONT,GRC_ARROW,GRC_AXIS,GRC_FRAME,__GRC_END__};
28 #define MGRIDWIDTH 0.6
29 #define GRIDWIDTH 0.4
31 enum gf_en {GF_PRINT=0,GF_GPRINT,GF_COMMENT,GF_HRULE,GF_VRULE,GF_LINE,
32 GF_AREA,GF_STACK,GF_TICK,
33 GF_DEF, GF_CDEF, GF_VDEF, GF_SHIFT,
34 #ifdef WITH_PIECHART
35 GF_PART,
36 #endif
37 GF_XPORT};
39 enum vdef_op_en {
40 VDEF_MAXIMUM=0 /* like the MAX in (G)PRINT */
41 ,VDEF_MINIMUM /* like the MIN in (G)PRINT */
42 ,VDEF_AVERAGE /* like the AVERAGE in (G)PRINT */
43 ,VDEF_PERCENT /* Nth percentile */
44 ,VDEF_TOTAL /* average multiplied by time */
45 ,VDEF_FIRST /* first non-unknown value and time */
46 ,VDEF_LAST /* last non-unknown value and time */
47 ,VDEF_LSLSLOPE /* least squares line slope */
48 ,VDEF_LSLINT /* least squares line y_intercept */
49 ,VDEF_LSLCORREL /* least squares line correlation coefficient */
50 };
51 enum text_prop_en { TEXT_PROP_DEFAULT=0, /* default settings */
52 TEXT_PROP_TITLE, /* properties for the title */
53 TEXT_PROP_AXIS, /* for the numbers next to the axis */
54 TEXT_PROP_UNIT, /* for the vertical unit description */
55 TEXT_PROP_LEGEND, /* fot the legend below the graph */
56 TEXT_PROP_LAST };
58 typedef struct text_prop_t {
59 double size;
60 char font[1024];
61 } text_prop_t;
64 typedef struct vdef_t {
65 enum vdef_op_en op;
66 double param; /* parameter for function, if applicable */
67 double val; /* resulting value */
68 time_t when; /* timestamp, if applicable */
69 } vdef_t;
71 typedef struct xlab_t {
72 long minsec; /* minimum sec per pix */
73 long length; /* number of secs on the image */
74 enum tmt_en gridtm; /* grid interval in what ?*/
75 long gridst; /* how many whats per grid*/
76 enum tmt_en mgridtm; /* label interval in what ?*/
77 long mgridst; /* how many whats per label*/
78 enum tmt_en labtm; /* label interval in what ?*/
79 long labst; /* how many whats per label*/
80 long precis; /* label precision -> label placement*/
81 char *stst; /* strftime string*/
82 } xlab_t;
84 typedef struct ygrid_scale_t { /* y axis grid scaling info */
85 double gridstep;
86 int labfact;
87 char labfmt[64];
88 } ygrid_scale_t;
90 /* sensible y label intervals ...*/
92 typedef struct ylab_t {
93 double grid; /* grid spacing */
94 int lfac[4]; /* associated label spacing*/
95 } ylab_t;
98 /* this structure describes the elements which can make up a graph.
99 because they are quite diverse, not all elements will use all the
100 possible parts of the structure. */
101 #ifdef HAVE_SNPRINTF
102 #define FMT_LEG_LEN 200
103 #else
104 #define FMT_LEG_LEN 2000
105 #endif
107 typedef struct graph_desc_t {
108 enum gf_en gf; /* graphing function */
109 int stack; /* boolean */
110 int debug; /* boolean */
111 char vname[MAX_VNAME_LEN+1]; /* name of the variable */
112 long vidx; /* gdes reference */
113 char rrd[1024]; /* name of the rrd_file containing data */
114 char ds_nam[DS_NAM_SIZE]; /* data source name */
115 long ds; /* data source number */
116 enum cf_en cf; /* consolidation function */
117 enum cf_en cf_reduce; /* consolidation function for reduce_data() */
118 gfx_color_t col; /* graph color */
119 char format[FMT_LEG_LEN+5]; /* format for PRINT AND GPRINT */
120 char legend[FMT_LEG_LEN+5]; /* legend*/
121 int strftm; /* should the VDEF legend be formated with strftime */
122 double leg_x,leg_y; /* location of legend */
123 double yrule; /* value for y rule line and for VDEF */
124 time_t xrule; /* time for x rule line and for VDEF */
125 vdef_t vf; /* instruction for VDEF function */
126 rpnp_t *rpnp; /* instructions for CDEF function */
128 /* SHIFT implementation */
129 int shidx; /* gdes reference for offset (-1 --> constant) */
130 time_t shval; /* offset if shidx is -1 */
131 time_t shift; /* current shift applied */
133 /* description of data fetched for the graph element */
134 time_t start,end; /* timestaps for first and last data element */
135 time_t start_orig,end_orig; /* timestaps for first and last data element */
136 unsigned long step; /* time between samples */
137 unsigned long step_orig; /* time between samples */
138 unsigned long ds_cnt; /* how many data sources are there in the fetch */
139 long data_first; /* first pointer to this data */
140 char **ds_namv; /* name of datasources in the fetch. */
141 rrd_value_t *data; /* the raw data drawn from the rrd */
142 rrd_value_t *p_data; /* processed data, xsize elments */
143 double linewidth; /* linewideth */
144 } graph_desc_t;
146 typedef struct image_desc_t {
148 /* configuration of graph */
150 char graphfile[MAXPATH]; /* filename for graphic */
151 FILE *graphhandle; /* FILE to use if filename is "-" */
152 long xsize,ysize; /* graph area size in pixels */
153 #ifdef WITH_PIECHART
154 long piesize; /* size of the piechart */
155 #endif
156 gfx_color_t graph_col[__GRC_END__]; /* real colors for the graph */
157 text_prop_t text_prop[TEXT_PROP_LAST]; /* text properties */
158 char ylegend[200]; /* legend along the yaxis */
159 char title[200]; /* title for graph */
160 char watermark[100]; /* watermark for graph */
161 int draw_x_grid; /* no x-grid at all */
162 int draw_y_grid; /* no x-grid at all */
163 double grid_dash_on, grid_dash_off;
164 xlab_t xlab_user; /* user defined labeling for xaxis */
165 char xlab_form[200]; /* format for the label on the xaxis */
167 double ygridstep; /* user defined step for y grid */
168 int ylabfact; /* every how many y grid shall a label be written ? */
169 double tabwidth; /* tabwdith */
170 time_t start,end; /* what time does the graph cover */
171 unsigned long step; /* any preference for the default step ? */
172 rrd_value_t minval,maxval; /* extreme values in the data */
173 int rigid; /* do not expand range even with
174 values outside */
175 ygrid_scale_t ygrid_scale; /* calculated y axis grid info */
176 int gridfit; /* adjust y-axis range etc so all
177 grindlines falls in integer pixel values */
178 char* imginfo; /* construct an <IMG ... tag and return
179 as first retval */
180 int lazy; /* only update the image if there is
181 reasonable probablility that the
182 existing one is out of date */
183 int slopemode; /* connect the dots of the curve directly, not using a stair */
184 int logarithmic; /* scale the yaxis logarithmic */
186 /* status information */
188 long xorigin,yorigin;/* where is (0,0) of the graph */
189 #ifdef WITH_PIECHART
190 long pie_x,pie_y; /* where is the centerpoint */
191 #endif
192 long ximg,yimg; /* total size of the image */
193 double magfact; /* numerical magnitude*/
194 long base; /* 1000 or 1024 depending on what we graph */
195 char symbol; /* magnitude symbol for y-axis */
196 float viewfactor; /* how should the numbers on the y-axis be scaled for viewing ? */
197 int unitsexponent; /* 10*exponent for units on y-asis */
198 int unitslength; /* width of the yaxis labels */
199 int extra_flags; /* flags for boolean options */
200 /* data elements */
202 long prt_c; /* number of print elements */
203 long gdes_c; /* number of graphics elements */
204 graph_desc_t *gdes; /* points to an array of graph elements */
205 gfx_canvas_t *canvas; /* graphics library */
206 } image_desc_t;
208 /* Prototypes */
209 int xtr(image_desc_t *,time_t);
210 double ytr(image_desc_t *, double);
211 enum gf_en gf_conv(char *);
212 enum gfx_if_en if_conv(char *);
213 enum tmt_en tmt_conv(char *);
214 enum grc_en grc_conv(char *);
215 enum text_prop_en text_prop_conv(char *);
216 int im_free(image_desc_t *);
217 void auto_scale( image_desc_t *, double *, char **, double *);
218 void si_unit( image_desc_t *);
219 void expand_range(image_desc_t *);
220 void apply_gridfit(image_desc_t *);
221 void reduce_data( enum cf_en, unsigned long, time_t *, time_t *, unsigned long *, unsigned long *, rrd_value_t **);
222 int data_fetch( image_desc_t *);
223 long find_var(image_desc_t *, char *);
224 long find_var_wrapper(void *arg1, char *key);
225 long lcd(long *);
226 int data_calc( image_desc_t *);
227 int data_proc( image_desc_t *);
228 time_t find_first_time( time_t, enum tmt_en, long);
229 time_t find_next_time( time_t, enum tmt_en, long);
230 int print_calc(image_desc_t *, char ***);
231 int leg_place(image_desc_t *);
232 int calc_horizontal_grid(image_desc_t *);
233 int draw_horizontal_grid(image_desc_t *);
234 int horizontal_log_grid(image_desc_t *);
235 void vertical_grid(image_desc_t *);
236 void axis_paint(image_desc_t *);
237 void grid_paint(image_desc_t *);
238 int lazy_check(image_desc_t *);
239 int graph_paint(image_desc_t *, char ***);
240 #ifdef WITH_PIECHART
241 void pie_part(image_desc_t *, gfx_color_t, double, double, double, double, double);
242 #endif
243 int gdes_alloc(image_desc_t *);
244 int scan_for_col(const char *const , int, char *const);
245 int rrd_graph(int, char **, char ***, int *, int *, FILE *, double *, double *);
246 void rrd_graph_init(image_desc_t *);
247 void rrd_graph_options(int, char **, image_desc_t *);
248 void rrd_graph_script(int, char **, image_desc_t *, int);
249 int rrd_graph_check_vname(image_desc_t *, char *, char *);
250 int rrd_graph_color(image_desc_t *, char *, char *, int);
251 int bad_format(char *);
252 int vdef_parse(struct graph_desc_t *,const char *const);
253 int vdef_calc(image_desc_t *, int);
254 int vdef_percent_compar(const void *,const void *);
255 int graph_size_location(image_desc_t *, int
256 #ifdef WITH_PIECHART
257 ,int
258 #endif
259 );
261 #endif