#define GRAPH_H
struct graph;
+struct graph_label;
+typedef struct graph_label * graph_label_t;
+
+#define GRAPH_DEFAULT_FONT "Sans 12"
struct graph *graph_new(unsigned int xdim, unsigned int ydim, const char *font);
/* graph_new() Returns a new graph structure of the given dimensions and font */
void graph_set_size(struct graph *g, unsigned int xdim, unsigned int ydim);
/* graph_set_size() Changes the size of a graph to the given dimensions. */
+void graph_set_position(struct graph *g, double xoffset, double yoffset);
+/* graph_set_position() sets the x- and y-offset to translate the graph */
void bar_graph_draw(struct graph *g, cairo_t *cr);
/* bar_graph_draw() draws the given graph as a bar graph */
void line_graph_draw(struct graph *g, cairo_t *cr);
* be added to a line graph. Once the limit is reached, the oldest data
* is discarded as new data is added
*/
+void graph_set_font(struct graph *g, const char *font);
void graph_title(struct graph *g, const char *title);
/* graph_title() sets the main title of the graph to the given string */
void graph_x_title(struct graph *g, const char *title);
/* graph_x_title() sets the title of the x axis to the given string */
void graph_y_title(struct graph *g, const char *title);
/* graph_y_title() sets the title of the y axis to the given string */
-void graph_add_label(struct graph *g, const char *label);
+graph_label_t graph_add_label(struct graph *g, const char *label);
/* graph_add_label() adds a new "stream" of data to be graphed.
* For line charts, each label is a separate line on the graph.
* For bar charts, each label is a grouping of columns on the x-axis
* label.
*/
-int graph_add_data(struct graph *g, const char *label, const double value);
+int graph_add_data(struct graph *g, graph_label_t label, const double value);
/* graph_add_data() is used to add data to the labels of a bar graph */
-int graph_add_xy_data(struct graph *g, const char *label,
- const double x, const double y);
+int graph_add_xy_data(struct graph *g, graph_label_t label,
+ const double x, const double y, const char *tooltip);
/* graph_add_xy_data is used to add data to the labels of a line graph */
-void graph_set_color(struct graph *g, const char *label,
+void graph_set_color(struct graph *g, graph_label_t label,
double red, double green, double blue);
#define INVISIBLE_COLOR (-1.0)
/* graph_set_color is used to set the color used to plot the data in
* millions, thousands and ones.
*/
+void graph_add_extra_space(struct graph *g, double left_percent, double right_percent,
+ double top_percent, double bottom_percent);
+/* graph_add_extra_space() adds extra space to edges of the the graph
+ * so that the data doesn't go to the very edges.
+ */
+
+extern int graph_has_tooltips(struct graph *g);
+extern const char *graph_find_tooltip(struct graph *g, int x, int y);
+extern int graph_contains_xy(struct graph *p, int x, int y);
+
+extern void graph_set_base_offset(struct graph *g, unsigned int base_offset);
+extern void graph_set_graph_all_zeroes(struct graph *g, unsigned int set);
+
#endif