struct dimensions {
	int row_count;	/* rows */
	int column_count;	/* columns */
	double paper_width; 	/* paper width */
	double paper_height;	/* paper height */
	double month_width;	/* month width */
	double month_height;	/* month height */
   double month_top_corner_x;
   double month_top_corner_y;
	double day_width;	/* day box width */
	double day_height;	/* day box height */
	double margin;	/* margin */
};

int fill_bg(cairo_t *c);

int draw_text(cairo_t *c, double x, double y, char *text);

int calculate_dimensions(double pw, double ph, struct dimensions *d);

int print_dimensions(struct dimensions *d);

//int draw_month_grid (cairo_t *c, struct dimensions *d);

int draw_month (cairo_t *c, cairo_t *cd, cairo_surface_t *s, struct dimensions *d, int days_in_month, int start_day);

int day_of_week (int d, int m, int y);