first commit

1 files changed, 135 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..daa1e40
--- /dev/null
+++ b/main.c
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+#include <cairo/cairo.h>
+#include <cairo/cairo-pdf.h>
+#include <stdio.h>
+#include <string.h>
+#include "include/color.h"
+
+double us_letter_paper_width = 8.5;
+double us_letter_paper_height = 11;
+
+double paper_width = 8.5 * 72; /* 612.0 */
+double paper_height = 11 * 72; /* 792.0 */
+int number_of_days = 30;
+int rows = 6;
+int columns = 7;
+double margin = 0.5;
+
+int draw_calendar(cairo_t *c, double x, double y) {
+	double x1, y1, x2, y2;
+	double month_width = us_letter_paper_width - (x * 2);
+	double month_height = us_letter_paper_height - y - margin;
+	double day_box_width = month_width / columns;
+	double day_box_height = month_height / rows;
+
+	x1 = x;
+	y1 = y;
+	x2 = us_letter_paper_width - x1; /* Set the line endpoint to right side of the page */
+
+	for (int i = 0; i < rows + 1; i++) { /* Draw Horizontal Lines */
+		cairo_move_to (c, x, y);
+		cairo_line_to (c, x2, y);
+		y = y + day_box_height;
+	}
+
+	x = x1;
+	y = y1;
+	y2 = y1 + month_height; /* Set the line endpoint as the bottom of the month */
+	for (int i = 0; i < columns + 1; i++) { /* Draw Vertical Lines */
+		cairo_move_to (c, x, y);
+		cairo_line_to (c, x, y2);
+		x = x + day_box_width;
+	}
+	cairo_stroke(c);
+	return(0);
+}
+
+int draw_numbers(cairo_t *c, double x, double y, int wd) {
+	double month_width = us_letter_paper_width - (x * 2);
+	double month_height = us_letter_paper_height - y - margin;
+	double day_box_width = month_width / columns;
+	double day_box_height = month_height / rows;
+
+	char str[3];
+	cairo_text_extents_t te;
+	cairo_font_extents_t fe;
+
+	cairo_set_source_rgba(c, 0.0, 0.0, 0.0, 0.6);
+	cairo_select_font_face (c, "sans-serif",
+			CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
+	cairo_set_font_size (c, 0.5);
+
+	int iterative = 0;
+	cairo_font_extents (c, &fe);
+	double yi = y;
+	double xi = x; 
+	int current_weekday = wd;
+	x = margin + (wd * day_box_width);
+	for (int j = 0; j < rows; j++) {
+		y = y + day_box_height - ((day_box_height - fe.ascent) / 2);
+		for (int k = current_weekday; k < columns; k++) {
+			if (iterative < number_of_days) {
+				sprintf(str, "%d", iterative + 1);
+				cairo_text_extents (c, str, &te);
+				double box_margins = (day_box_width - te.width) / 2;
+
+				cairo_move_to(c, x + box_margins - te.x_bearing, y); /* center the number within the box */
+				cairo_show_text(c, str);
+				cairo_move_to(c, x, y); /* Sort of backtrack to realign with the spacing of the boxes */
+				x = x + day_box_width;
+				iterative++;
+				current_weekday++;
+			}
+		}
+		current_weekday = 0;
+		y = y - (day_box_height - ((day_box_height - fe.ascent) / 2));
+		y = y + day_box_height;
+		x = xi;
+	}
+	return(0);
+}
+
+int draw_month_name(cairo_t *c, char *name) {
+	double x, y = margin;
+	double month_width = us_letter_paper_width - (x * 2);
+	double month_height = us_letter_paper_height - y - margin;
+	double day_box_width = month_width / columns;
+	double day_box_height = month_height / rows;
+	cairo_set_source_rgb(c, 0.0, 0.0, 0.0);
+	cairo_set_font_size(c, 1.0);
+	cairo_text_extents_t te;
+	cairo_font_extents_t fe;
+	cairo_text_extents(c, name, &te);
+	x = (us_letter_paper_width / 2) - (te.width / 2);
+	y = 1.5;
+	cairo_move_to(c, x, y);
+	cairo_show_text(c, &name[0]);
+	return(0);
+}
+
+int main (int argc, char *argv[]) {
+	char date_strings[number_of_days][2];
+	char months[12][10] = {"January", "February", "March", "April", "May",
+		"June", "July", "August", "September", "October", "November", "December"};
+
+	char weekdays_abbr[7][5] = {"Su", "Mo", "Tue", "Wed",
+		"Thurs", "Fri", "Sat"};
+
+	cairo_surface_t * surface = cairo_pdf_surface_create("0.pdf", paper_width, paper_height);
+	cairo_t *cr = cairo_create(surface);
+
+	cairo_scale(cr, 72, 72);
+	cairo_set_line_width(cr, 0.03);
+	cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.3);
+	double month_origin_x = margin;
+	double month_origin_y = 3.0;
+
+	draw_calendar(cr, month_origin_x, month_origin_y);
+	draw_numbers(cr, month_origin_x, month_origin_y, 6);
+	draw_month_name(cr, months[10]);
+
+	/* Clean Up */
+	cairo_destroy(cr);
+	cairo_surface_destroy(surface);
+
+	return(0);
+}