From 2be4210944d97ddb158feee601ec85c016de0872 Mon Sep 17 00:00:00 2001
From: Randoragon <randoragongamedev@gmail.com>
Date: Tue, 19 Jan 2021 10:17:47 +0100
Subject: [PATCH] Add toggle colorscheme functionality

This patch is meant to be applied on top of the "inverted colors" patch
(https://tools.suckless.org/sent/patches/inverted-colors/). It creates a
new binding, "i", that lets you toggle between two colorschemes during
presentation.
---
 config.def.h |  1 +
 sent.1       |  2 ++
 sent.c       | 18 ++++++++++++++++++
 3 files changed, 21 insertions(+)

diff --git a/config.def.h b/config.def.h
index ccea9a6..c72afc5 100644
--- a/config.def.h
+++ b/config.def.h
@@ -52,6 +52,7 @@ static Shortcut shortcuts[] = {
 	{ XK_n,           advance,        {.i = +1} },
 	{ XK_p,           advance,        {.i = -1} },
 	{ XK_r,           reload,         {0} },
+	{ XK_i,           togglescm,      {0} },
 };
 
 static Filter filters[] = {
diff --git a/sent.1 b/sent.1
index f74d583..a7564a8 100644
--- a/sent.1
+++ b/sent.1
@@ -44,6 +44,8 @@ Reload the slides. Only works on file input.
 Go to next slide, if existent.
 .It Sy Left | Backspace | h | k | Up | Prior | p
 Go to previous slide, if existent.
+.It Sy i
+Toggle colorschemes.
 .El
 .El
 .Sh FORMAT
diff --git a/sent.c b/sent.c
index 7053ab3..d29fc35 100644
--- a/sent.c
+++ b/sent.c
@@ -107,6 +107,7 @@ static void xdraw();
 static void xhints();
 static void xinit();
 static void xloadfonts();
+static void togglescm();
 
 static void bpress(XEvent *);
 static void cmessage(XEvent *);
@@ -613,6 +614,23 @@ xinit()
 	XSync(xw.dpy, False);
 }
 
+void
+togglescm()
+{
+    if (use_inverted_colors) {
+        free(sc);
+        sc = drw_scm_create(d, colors, 2);
+        use_inverted_colors = 0;
+    } else {
+        sc = drw_scm_create(d, inverted_colors, 2);
+        use_inverted_colors = 1;
+    }
+    drw_setscheme(d, sc);
+       XSetWindowBackground(xw.dpy, xw.win, sc[ColBg].pixel);
+    xdraw();
+}
+
+
 void
 xloadfonts()
 {
-- 
2.30.0