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//calp: printable calendar generator
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <langinfo.h>
#include <locale.h>
#include <cairo/cairo-pdf.h>
#include <pango/pangocairo.h>
#include "draw.h"
#include "date.h"
#include "color.h"
#include "image.h"
// Metric
#define A4_WIDTH 210
#define A4_HEIGHT 297
#define US_LETTER_WIDTH 216
#define US_LETTER_HEIGHT 279
// Font Settings
#define FONT_FAMILY "Sans"
#define FONT_SIZE_NORMAL 10
#define FONT_SIZE_LARGE 40
int main (void) {
// Definitions
// -----------
double width = A4_WIDTH;
double height = A4_HEIGHT;
const int row_count = 6;
const int column_count = 7;
// Convert to inches, then 1 unit = 1/72th inch
width = (width / 25.4) * 72.0;
height = (height / 25.4) * 72.0;
//extern char *months[];
int num_of_months = 12;
char *months[num_of_months];
extern int days_in_month[12];
//const nl_item nl_abmons[12] = {ABMON_1, ABMON_2, ABMON_3, ABMON_4,
// ABMON_5, ABMON_6, ABMON_7, ABMON_8,
// ABMON_9, ABMON_10, ABMON_11, ABMON_12};
const nl_item nl_months[12] = {MON_1, MON_2, MON_3, MON_4, MON_5, MON_6,
MON_7, MON_8, MON_9, MON_10, MON_11, MON_12};
int i;
setlocale(LC_ALL, "");
for (i = 0; i < 12; i++) {
months[i] = nl_langinfo(nl_months[i]);
}
// Create dimensions struct to hold measurements
struct dimensions dim;
// Create dimensions struct to hold information about a
// month
struct month_info month;
// Leap year adjustment: increment February day count by one if
// it is a leap year.
const int year = 2026;
if (isleap(year)) {
days_in_month[1]++;
}
int verbose_output = 0;
// TBD: Add ability to choose filename
// Defaults to the year being generated
char filename[20];
snprintf(filename, sizeof(filename), "%d.pdf", year);
// Initialization
// --------------
// Calculates measurements, stores them in dimensions struct. See "draw.h"
calculate_dimensions(width, height, &dim);
struct extents paper_extents = {
.width = width,
.height = height
};
const double margin = 0.05 * paper_extents.width;
struct extents day_extents = {
.width = paper_extents.width / 10.0,
.height = paper_extents.width / 10.0
};
struct extents month_extents = {
.x = (paper_extents.width - (day_extents.width * column_count)) / 2.0,
.y = paper_extents.height - margin - (day_extents.height * row_count),
.width = day_extents.width * column_count,
.height = day_extents.height * row_count,
};
printf("%f\n", month_extents.x);
if (!CAIRO_HAS_PDF_SURFACE) {
printf("Error: PDF backend not available.\n");
return 1;
}
cairo_surface_t *surface = cairo_pdf_surface_create(filename, paper_extents.width, paper_extents.height);
cairo_t *paper = cairo_create(surface);
// Sub-surface for rendering content in day boxes
cairo_surface_t *day =
cairo_surface_create_similar(surface, CAIRO_CONTENT_COLOR_ALPHA, day_extents.width, day_extents.height);
// cd = context day
cairo_t *cd = cairo_create(day);
// Fill background with white color
set_color(paper, WHITE);
fill_bg(paper);
// Construction
// ------------
// Month generation loop
for (int i = 0; i < num_of_months; i++) {
// Initialize month struct
month.first_day = day_of_week(1, i + 1, year);
month.num_of_days = days_in_month[i];
month.month_position = i;
month.minimum_rows = calculate_minimum_rows(&month);
dim.header_width = dim.paper_width - (dim.margin * 2.0);
dim.header_height = dim.paper_height - (dim.margin * 3.0) - (month.minimum_rows * dim.day_height);
cairo_surface_t *header = cairo_surface_create_similar(surface, CAIRO_CONTENT_COLOR_ALPHA, dim.header_width, dim.header_height);
cairo_t *ch = cairo_create(header);
set_color(ch, BLACK);
draw_month_title(ch, &dim, "Sans", 40, months[i]);
char path[20];
snprintf(path, 20, "assets/%d.png", i + 1);
if (verbose_output) {
printf("Drawing month \'%s\'\n", months[i]);
}
draw_month_art(paper, &dim, path);
cairo_set_source_surface(paper, header, dim.margin, dim.margin);
cairo_paint(paper);
draw_month(paper, cd, day, &month, &dim);
draw_month_grid(paper, &month, &month_extents, &day_extents);
// Go to the next page in pdf
cairo_show_page(paper);
cairo_destroy(ch);
cairo_surface_destroy(header);
}
if (verbose_output) {
printf("Finished generating \'%s\'.\n", filename);
}
// Clean up
// --------
cairo_destroy(paper);
cairo_surface_destroy(surface);
cairo_destroy(cd);
cairo_surface_destroy(day);
return 0;
}
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