Modification of rrd_graph.c/h so it uses dashes for gridlines much like

[rrdtool.git] / src / rrd_graph.h

diff --git a/src/rrd_graph.h b/src/rrd_graph.h
index b86859c..e61d6b0 100644 (file)
--- a/src/rrd_graph.h
+++ b/src/rrd_graph.h
@@ -25,8 +25,6 @@ enum gf_en {GF_PRINT=0,GF_GPRINT,GF_COMMENT,GF_HRULE,GF_VRULE,GF_LINE,
            GF_DEF, GF_CDEF, GF_VDEF,
            GF_PART};
 
-enum if_en {IF_GIF=0,IF_PNG=1};
-
 enum vdef_op_en {
                 VDEF_MAXIMUM   /* like the MAX in (G)PRINT */
                ,VDEF_MINIMUM   /* like the MIN in (G)PRINT */
@@ -68,6 +66,12 @@ typedef struct xlab_t {
     char         *stst;        /* strftime string*/
 } xlab_t;
 
+typedef struct ygrid_scale_t {  /* y axis grid scaling info */
+    double       gridstep;
+    int          labfact;
+    char         labfmt[64];
+} ygrid_scale_t;
+
 /* sensible y label intervals ...*/
 
 typedef struct ylab_t {
@@ -118,14 +122,14 @@ typedef struct image_desc_t {
     /* configuration of graph */
 
     char           graphfile[MAXPATH]; /* filename for graphic */
-    long           xsize,ysize;    /* graph area size in pixels */
-    double         zoom;           /* zoom for graph */
+    long           xsize,ysize,piesize;    /* graph area size in pixels */
     gfx_color_t    graph_col[__GRC_END__]; /* real colors for the graph */   
     text_prop_t    text_prop[TEXT_PROP_LAST]; /* text properties */
     char           ylegend[200];   /* legend along the yaxis */
     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 */
 
@@ -137,18 +141,21 @@ typedef struct image_desc_t {
     rrd_value_t    minval,maxval;  /* extreme values in the data */
     int            rigid;          /* do not expand range even with 
                                      values outside */
+    ygrid_scale_t  ygrid_scale;    /* calculated y axis grid info */
+    int            gridfit;        /* adjust y-axis range etc so all
+                                     grindlines falls in integer pixel values */
     char*          imginfo;        /* construct an <IMG ... tag and return 
                                      as first retval */
-    int            lazy;           /* only update the gif if there is reasonable
-                                     probablility that the existing one is out of date */
+    int            lazy;           /* only update the image if there is
+                                     reasonable probablility that the
+                                     existing one is out of date */
     int            logarithmic;    /* scale the yaxis logarithmic */
-    enum if_en     imgformat;      /* image format */
     
     /* status information */
            
     long           xorigin,yorigin;/* where is (0,0) of the graph */
-    long           xgif,ygif;      /* total size of the gif */
-    int            interlaced;     /* will the graph be interlaced? */
+    long           pie_x,pie_y;    /* where is the centerpoint */
+    long           ximg,yimg;      /* total size of the image */
     double         magfact;        /* numerical magnitude*/
     long         base;            /* 1000 or 1024 depending on what we graph */
     char           symbol;         /* magnitude symbol for y-axis */
@@ -159,14 +166,14 @@ typedef struct image_desc_t {
     long  prt_c;                  /* number of print elements */
     long  gdes_c;                  /* number of graphics elements */
     graph_desc_t   *gdes;          /* points to an array of graph elements */
-
+    gfx_canvas_t   *canvas;        /* graphics library */
 } image_desc_t;
 
 /* Prototypes */
 int xtr(image_desc_t *,time_t);
-int ytr(image_desc_t *, double);
+double ytr(image_desc_t *, double);
 enum gf_en gf_conv(char *);
-enum if_en if_conv(char *);
+enum gfx_if_en if_conv(char *);
 enum tmt_en tmt_conv(char *);
 enum grc_en grc_conv(char *);
 enum grc_en text_prop_conv(char *);
@@ -174,6 +181,7 @@ int im_free(image_desc_t *);
 void auto_scale( image_desc_t *,  double *, char **, double *);
 void si_unit( image_desc_t *);
 void expand_range(image_desc_t *);
+void apply_gridfit(image_desc_t *);
 void reduce_data( enum cf_en,  unsigned long,  time_t *, time_t *,  unsigned long *,  unsigned long *,  rrd_value_t **);
 int data_fetch( image_desc_t *);
 long find_var(image_desc_t *, char *);
@@ -185,14 +193,15 @@ time_t find_first_time( time_t,  enum tmt_en,  long);
 time_t find_next_time( time_t,  enum tmt_en,  long);
 int print_calc(image_desc_t *, char ***);
 int leg_place(image_desc_t *);
-int horizontal_grid(gfx_canvas_t *,image_desc_t *);
-int horizontal_log_grid(gfx_canvas_t *, image_desc_t *);
-void vertical_grid(gfx_canvas_t *, image_desc_t *);
-void axis_paint( image_desc_t *, gfx_canvas_t *);
-void grid_paint( image_desc_t *, gfx_canvas_t *);
+int calc_horizontal_grid(image_desc_t *);
+int draw_horizontal_grid(image_desc_t *);
+int horizontal_log_grid(image_desc_t *);
+void vertical_grid(image_desc_t *);
+void axis_paint(image_desc_t *);
+void grid_paint(image_desc_t *);
 int lazy_check(image_desc_t *);
 int graph_paint(image_desc_t *, char ***);
-void pie_part(gfx_canvas_t *, gfx_color_t, double, double, double, double, double);
+void pie_part(image_desc_t *, gfx_color_t, double, double, double, double, double);
 int gdes_alloc(image_desc_t *);
 int scan_for_col(char *, int, char *);
 int rrd_graph(int, char **, char ***, int *, int *);
@@ -207,3 +216,4 @@ int bad_format(char *);
 int vdef_parse(struct graph_desc_t *,char *);
 int vdef_calc(image_desc_t *, int);
 int vdef_percent_compar(const void *,const void *);
+int graph_size_location(image_desc_t *, int, int);