From 73a6020865607018f6442317e7f94fb5d54a7016 Mon Sep 17 00:00:00 2001
From: "luquinha.virus" <lucas.mior@tutamail.com>
Date: Wed, 19 Aug 2020 00:24:54 -0300
Subject: [PATCH] change alpha with keyboard shortcut C-F11/C-F12

---
 config.h |  2 ++
 x.c      | 15 +++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/config.h b/config.h
index 47ed4d5..b49a405 100644
--- a/config.h
+++ b/config.h
@@ -267,6 +267,8 @@ static Shortcut shortcuts[] = {
 	{ MODKEY,               XK_Down,        kscrolldown,    {.i =  1} },
 	{ MODKEY,               XK_u,           kscrollup,      {.i = -1} },
 	{ MODKEY,               XK_d,           kscrolldown,    {.i = -1} },
+	{ ControlMask,          XK_F11,         changealpha,    {.f = -0.05} },
+	{ ControlMask,          XK_F12,         changealpha,    {.f = +0.05} },
 	{ TERMMOD,              XK_Up,          zoom,           {.f = +1} },
 	{ TERMMOD,              XK_Down,        zoom,           {.f = -1} },
 	{ TERMMOD,              XK_K,           zoom,           {.f = +1} },
diff --git a/x.c b/x.c
index d2ed474..652f3cc 100644
--- a/x.c
+++ b/x.c
@@ -68,6 +68,7 @@ static void clipcopy(const Arg *);
 static void clippaste(const Arg *);
 static void numlock(const Arg *);
 static void selpaste(const Arg *);
+static void changealpha(const Arg *);
 static void zoom(const Arg *);
 static void zoomabs(const Arg *);
 static void zoomreset(const Arg *);
@@ -303,6 +304,20 @@ numlock(const Arg *dummy)
 	win.mode ^= MODE_NUMLOCK;
 }
 
+void
+changealpha(const Arg *arg)
+{
+    if((alpha > 0 && arg->f < 0) || (alpha < 1 && arg->f > 0))
+        alpha += arg->f;
+    if(alpha < 0)
+        alpha = 0;
+    if(alpha > 1)
+        alpha = 1;
+
+    xloadcols();
+    redraw();
+}
+
 void
 zoom(const Arg *arg)
 {