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struct chart {
const char *name;
int x, y, w, h;
int num_samples;
int current_sample;
int range_automatic;
enum chart_mode {
CHART_STROKE = 0,
CHART_FILL,
CHART_FILL_STROKE,
} mode;
enum chart_smooth {
CHART_LINE = 0,
CHART_CURVE,
} smooth;
float fill_rgb[4];
float stroke_rgb[4];
double stroke_width;
double range[2];
double *samples;
};
int chart_init(struct chart *chart, const char *name, int num_samples);
void chart_set_mode(struct chart *chart, enum chart_mode mode);
void chart_set_smooth(struct chart *chart, enum chart_smooth smooth);
void chart_set_fill_rgba(struct chart *chart, float red, float green, float blue, float alpha);
void chart_set_stroke_width(struct chart *chart, float width);
void chart_set_stroke_rgba(struct chart *chart, float red, float green, float blue, float alpha);
void chart_set_position(struct chart *chart, int x, int y);
void chart_set_size(struct chart *chart, int w, int h);
void chart_set_range(struct chart *chart, double min, double max);
void chart_add_sample(struct chart *chart, double value);
void chart_draw(struct chart *chart, cairo_t *cr);
void chart_fini(struct chart *chart);
void chart_get_range(struct chart *chart, double *range);
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