From 0988980aa572f2d1b7b34488d1559e6083a7922f Mon Sep 17 00:00:00 2001
From: bd <bdunahu@operationnull.com>
Date: Fri, 27 Feb 2026 10:34:22 -0500
Subject: add pdf patch

---
 sent.c | 45 +++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 41 insertions(+), 4 deletions(-)

(limited to 'sent.c')

diff --git a/sent.c b/sent.c
index dfadd3a..a935554 100644
--- a/sent.c
+++ b/sent.c
@@ -19,6 +19,10 @@
 #include <X11/Xutil.h>
 #include <X11/Xft/Xft.h>
 
+#include <cairo/cairo.h>
+#include <cairo/cairo-xlib.h>
+#include <cairo/cairo-pdf.h>
+
 #include "arg.h"
 #include "util.h"
 #include "drw.h"
@@ -97,6 +101,7 @@ static void cleanup(int slidesonly);
 static void reload(const Arg *arg);
 static void load(FILE *fp);
 static void advance(const Arg *arg);
+static void pdf();
 static void quit(const Arg *arg);
 static void resize(int width, int height);
 static void run(void);
@@ -430,10 +435,6 @@ load(FILE *fp)
 		maxlines = 0;
 		memset((s = &slides[slidecount]), 0, sizeof(Slide));
 		do {
-			/* if there's a leading null, we can't do blen-1 */
-			if (buf[0] == '\0')
-				continue;
-
 			if (buf[0] == '#')
 				continue;
 
@@ -481,6 +482,42 @@ advance(const Arg *arg)
 	}
 }
 
+void
+pdf()
+{
+	const Arg next = { .i = 1 };
+	Arg first;
+	cairo_surface_t *cs;
+
+	if (!fname)
+		fname = "slides";
+
+	char filename[strlen(fname) + 5];
+	sprintf(filename, "%s.pdf", fname);
+	cairo_surface_t *pdf = cairo_pdf_surface_create(filename, xw.w, xw.h);
+
+	cairo_t *cr = cairo_create(pdf);
+
+	first.i = -idx;
+	advance(&first);
+
+	cs = cairo_xlib_surface_create(xw.dpy, xw.win, xw.vis, xw.w, xw.h);
+	cairo_set_source_surface(cr, cs, 0.0, 0.0);
+	for (int i = 0; i < slidecount; ++i) {
+		cairo_paint(cr);
+		cairo_show_page(cr);
+		cairo_surface_flush(cs);
+		advance(&next);
+		cairo_surface_mark_dirty(cs);
+	}
+	cairo_surface_destroy(cs);
+
+	cairo_destroy(cr);
+	cairo_surface_destroy(pdf);
+	first.i = -(slidecount-1);
+	advance(&first);
+}
+
 void
 quit(const Arg *arg)
 {
-- 
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