1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/* Standard Libraries */
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>
#include <unistd.h>
#include <time.h>
/* Cairo Libraries */
#include <cairo/cairo-pdf.h>
#include <cairo/cairo.h>
/* calp Libraries */
#include "color.h"
#include "date.h"
#include "draw.h"
// int main (int argc, char *argv[]) {
int main (void) {
// Dimension initialization
int rows = 6; // Number of weeks in a month
int columns = 7; // Number of days in a week
int months_in_year = 12;
double margin = 0.5; // 0.5"
//int number_of_days = 28;
double month_origin_x = margin;
double month_origin_y = 3.0;
double paper_width = 8.5;
double paper_height = 11;
double month_width = paper_width - (month_origin_x * 2);
double month_height = paper_height - month_origin_y - margin;
double day_box_width = month_width / columns;
double day_box_height = month_height / rows;
struct dimensions dim = {
paper_width, // pw
paper_height, // ph
month_width, // mw
month_height, // mh
day_box_width, // bw
day_box_height, // bh
rows, // r
columns, // c
margin, // m
};
// Date Setup
char *months[] = {
"January", "February", "March", "April", "May",
"June", "July", "August", "September", "October",
"November", "December"
};
// If year is a leap year, isleap(year) = 1, and will be added to February.
int year = 2028;
int days_in_month[12] = {31, 28 + isleap(year), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
// Because 1px = 1/72", paper width & paper height must be multiplied by 72
cairo_surface_t * surface = cairo_pdf_surface_create("output.pdf", dim.pw * 72, dim.ph * 72);
cairo_t *cr = cairo_create(surface);
// Once paper dimensions have been initialized, they can be scaled back by the same factor they
// were multiplied to make the dimensions are easier to work with.
cairo_scale(cr, 72, 72);
cairo_set_line_width (cr, 0.03);
struct tm day;
static const struct tm empty_day;
// For some reason, this loop requires a zeroing of the day struct & running mktime() twice.
// Or else, the January and December days will be offset by +1/-1. I assume this is a
// quirk of time.h.
for (int i = 0; i < months_in_year; i++) {
mktime(&day);
day.tm_year = year - 1900;
day.tm_mon = i;
day.tm_mday = 1;
// tm.hour, tm_min, & tm_sec are not used, but need to be zeroed.
day.tm_hour = 0;
day.tm_min = 0;
day.tm_sec = 0;
mktime(&day);
draw_calendar(cr, month_origin_x, month_origin_y, dim);
draw_numbers(cr, month_origin_x, month_origin_y, dim, (day.tm_wday), days_in_month[i]);
draw_month_name(cr, months[i], dim);
day = empty_day;
// Moves to the next page of the pdf
cairo_show_page(cr);
}
// Clean Up
cairo_destroy(cr);
cairo_surface_destroy(surface);
return(0);
}
|
