From 9262cecf21a3a2fcf5f5c0f7dcc872fdc5435ca1 Mon Sep 17 00:00:00 2001
From: Miles Alan <m@milesalan.com>
Date: Mon, 7 Dec 2020 21:16:37 -0600
Subject: [PATCH] cyclefont: Add keybinding to cycle between multiple different
 fonts

---
 config.def.h |  8 +++++++-
 x.c          | 17 +++++++++++++++--
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/config.def.h b/config.def.h
index 6f05dce..5cd506c 100644
--- a/config.def.h
+++ b/config.def.h
@@ -5,7 +5,12 @@
  *
  * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
  */
-static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
+static char *fonts[] = {
+  "Liberation Mono:pixelsize=12:antialias=true:autohint=true",
+  "tewi:pixelsize=12:antialias=true:autohint=true"
+};
+static int fonts_current = 0;
+
 static int borderpx = 2;
 
 /*
@@ -199,6 +204,7 @@ static Shortcut shortcuts[] = {
 	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
 	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
 	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
+	{ TERMMOD,              XK_S,           cyclefonts,     {}        },
 };
 
 /*
diff --git a/x.c b/x.c
index 210f184..88cb8e7 100644
--- a/x.c
+++ b/x.c
@@ -59,6 +59,7 @@ static void zoom(const Arg *);
 static void zoomabs(const Arg *);
 static void zoomreset(const Arg *);
 static void ttysend(const Arg *);
+static void cyclefonts(const Arg *);
 
 /* config.h for applying patches and the configuration. */
 #include "config.h"
@@ -949,6 +950,18 @@ xloadfont(Font *f, FcPattern *pattern)
 	return 0;
 }
 
+void
+cyclefonts(const Arg *dummy)
+{
+	fonts_current++;
+	if (fonts_current > (sizeof fonts / sizeof fonts[0]) - 1) {
+		fonts_current = 0;
+	}
+	usedfont = fonts[fonts_current];
+	xloadfonts(fonts[fonts_current], 0);
+	redraw();
+}
+
 void
 xloadfonts(char *fontstr, double fontsize)
 {
@@ -1113,8 +1126,8 @@ xinit(int cols, int rows)
 	if (!FcInit())
 		die("could not init fontconfig.\n");
 
-	usedfont = (opt_font == NULL)? font : opt_font;
-	xloadfonts(usedfont, 0);
+	usedfont = fonts[fonts_current];
+	xloadfonts(fonts[fonts_current], 0);
 
 	/* colors */
 	xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
-- 
2.26.2