diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/color.h | 18 | ||||
| -rw-r--r-- | src/date.h | 1 | ||||
| -rw-r--r-- | src/draw.c | 94 | ||||
| -rw-r--r-- | src/draw.h | 24 | ||||
| -rw-r--r-- | src/main.c | 97 |
5 files changed, 234 insertions, 0 deletions
diff --git a/src/color.h b/src/color.h new file mode 100644 index 0000000..e2b4cc0 --- /dev/null +++ b/src/color.h @@ -0,0 +1,18 @@ + int set_color(cairo_t *c, char *str) { + if (strcmp("BLACK", str) == 0) { + cairo_set_source_rgb (c, 0.0, 0.0, 0.0); + } + if (strcmp("RED", str) == 0) { + cairo_set_source_rgb (c, 255.0, 0.0, 0.0); + } + if (strcmp("GREEN", str) == 0) { + cairo_set_source_rgb (c, 0.0, 255.0, 0.0); + } + if (strcmp("BLUE", str) == 0) { + cairo_set_source_rgb (c, 0.0, 0.0, 255.0); + } + if (strcmp("GREY", str) == 0) { + cairo_set_source_rgb (c, 128.0, 128.0, 128.0); + } + return(0); + } diff --git a/src/date.h b/src/date.h new file mode 100644 index 0000000..4ff3d32 --- /dev/null +++ b/src/date.h @@ -0,0 +1 @@ +/* date.h: Includes all the functions relating to calculating months, days, etc. */ diff --git a/src/draw.c b/src/draw.c new file mode 100644 index 0000000..51f9367 --- /dev/null +++ b/src/draw.c @@ -0,0 +1,94 @@ +#include <stdio.h> +#include <cairo/cairo.h> + +struct dimensions { + double pw; /* paper width */ + double ph; /* paper height */ + double mw; /* month width */ + double mh; /* month height */ + double bw; /* day box width */ + double bh; /* day box height */ + double r; /* rows */ + double c; /* columns */ + double m; /* margin */ +}; + + +int draw_calendar(cairo_t *c, double x, double y, struct dimensions d) { + double x1, y1, x2, y2; + x1 = x; + y1 = y; + x2 = d.pw - x1; /* Set the line endpoint to right side of the page */ + + for (int i = 0; i < d.r + 1; i++) { /* Draw Horizontal Lines */ + cairo_move_to (c, x, y); + cairo_line_to (c, x2, y); + y = y + d.bh; + } + + x = x1; + y = y1; + y2 = y1 + d.mh; /* Set the line endpoint as the bottom of the month */ + for (int i = 0; i < d.c + 1; i++) { /* Draw Vertical Lines */ + cairo_move_to (c, x, y); + cairo_line_to (c, x, y2); + x = x + d.bw; + } + cairo_stroke(c); + return(0); +} + + + +int draw_numbers(cairo_t *c, double x, double y, struct dimensions d, int wd, int nd) { + char str[20]; + cairo_text_extents_t te; + cairo_font_extents_t fe; + + cairo_select_font_face (c, "sans-serif", + CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD); + cairo_set_font_size (c, d.bw / 2); + + int iterative = 0; + cairo_font_extents (c, &fe); + double xi = x; + int current_weekday = wd; + x = d.m + (wd * d.bw); + for (int j = 0; j < d.r; j++) { + y = y + d.bh - ((d.bh - fe.ascent) / 2); + for (int k = current_weekday; k < d.c; k++) { + if (iterative < nd) { + snprintf(str, sizeof(str), "%d", iterative + 1); + cairo_text_extents (c, str, &te); + double box_margins = (d.bw - 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 + d.bw; + iterative++; + current_weekday++; + } + } + current_weekday = 0; + y = y - (d.bh - ((d.bh - fe.ascent) / 2)); + y = y + d.bh; + x = xi; + } + return(0); +} + + + +int draw_month_name(cairo_t *c, char *name, struct dimensions d) { + double x, y = d.m; + cairo_set_font_size(c, 1.0); + cairo_text_extents_t te; + cairo_text_extents(c, name, &te); + x = (d.pw / 2) - (te.width / 2); + y = 1.5; + cairo_move_to(c, x, y); + cairo_show_text(c, &name[0]); + return(0); +} + diff --git a/src/draw.h b/src/draw.h new file mode 100644 index 0000000..7c473a7 --- /dev/null +++ b/src/draw.h @@ -0,0 +1,24 @@ +struct dimensions { + double pw; /* paper width */ + double ph; /* paper height */ + double mw; /* month width */ + double mh; /* month height */ + double bw; /* day box width */ + double bh; /* day box height */ + double r; /* rows */ + double c; /* columns */ + double m; /* margin */ +}; + + + +int draw_calendar(cairo_t *c, double x, double y, struct dimensions d); + + + + +int draw_numbers(cairo_t *c, double x, double y, struct dimensions d, int wd, int nd); + + + +int draw_month_name(cairo_t *c, char *name, struct dimensions d); diff --git a/src/main.c b/src/main.c new file mode 100644 index 0000000..6d76a6d --- /dev/null +++ b/src/main.c @@ -0,0 +1,97 @@ +/* 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 */ + 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" + }; + + //int days_in_month[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; + + // const char *weekday_names[] = { + // "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" + // }; + + // const char *weekdays_abbr[] = { + // "Su", "Mo", "Tue", "Wed", "Thurs", "Fri", "Sat" + // }; + + int year = 2025; + int month = 2; + + struct tm day; + day.tm_mon = month - 1; + day.tm_mday = 1; + day.tm_year = year - 1900; + + /* 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); + + cairo_surface_t * surface = cairo_pdf_surface_create("0.pdf", dim.pw * 72, dim.ph * 72); + cairo_t *cr = cairo_create(surface); + + + cairo_scale(cr, 72, 72); + set_color(cr, "GRAY"); + cairo_set_line_width (cr, 0.03); + + + draw_calendar(cr, month_origin_x, month_origin_y, dim); + draw_numbers(cr, month_origin_x, month_origin_y, dim, day.tm_wday, number_of_days); + draw_month_name(cr, months[1], dim); + + /* Clean Up */ + cairo_destroy(cr); + cairo_surface_destroy(surface); + return(0); +} |