From ff573f7c27aa31d898498ae2a9bf368879ae2c3d Mon Sep 17 00:00:00 2001
From: BrunoCooper17 <BrunoCooper17@outlook.com>
Date: Mon, 7 Jun 2021 19:12:41 -0500
Subject: [PATCH] fadeinactive Patch

---
 config.def.h                   |  2 +
 dwm.c                          | 18 +++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/config.def.h b/config.def.h
index 1c0b587..6485e7a 100644
--- a/config.def.h
+++ b/config.def.h
@@ -5,6 +5,8 @@ static const unsigned int borderpx  = 1;        /* border pixel of windows */
 static const unsigned int snap      = 32;       /* snap pixel */
 static const int showbar            = 1;        /* 0 means no bar */
 static const int topbar             = 1;        /* 0 means bottom bar */
+static const double activeopacity   = 1.0f;     /* Window opacity when it's focused (0 <= opacity <= 1) */
+static const double inactiveopacity = 0.875f;   /* Window opacity when it's inactive (0 <= opacity <= 1) */
 static const char *fonts[]          = { "monospace:size=10" };
 static const char dmenufont[]       = "monospace:size=10";
 static const char col_gray1[]       = "#222222";
diff --git a/dwm.c b/dwm.c
index b0b3466..157659f 100644
--- a/dwm.c
+++ b/dwm.c
@@ -62,7 +62,7 @@ enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
 enum { SchemeNorm, SchemeSel }; /* color schemes */
 enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
        NetWMFullscreen, NetActiveWindow, NetWMWindowType,
-       NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
+       NetWMWindowTypeDialog, NetClientList, NetWMWindowsOpacity, NetLast }; /* EWMH atoms */
 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
        ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
@@ -185,6 +185,7 @@ static void monocle(Monitor *m);
 static void motionnotify(XEvent *e);
 static void movemouse(const Arg *arg);
 static Client *nexttiled(Client *c);
+static void opacity(Client *c, double opacity);
 static void pop(Client *);
 static void propertynotify(XEvent *e);
 static void quit(const Arg *arg);
@@ -798,6 +799,7 @@ focus(Client *c)
 		grabbuttons(c, 1);
 		XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
 		setfocus(c);
+		opacity(c, activeopacity);
 	} else {
 		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 		XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
@@ -1200,6 +1202,18 @@ nexttiled(Client *c)
 	return c;
 }
 
+void
+opacity(Client *c, double opacity)
+{
+	if(opacity > 0 && opacity < 1) {
+		unsigned long real_opacity[] = { opacity * 0xffffffff };
+		XChangeProperty(dpy, c->win, netatom[NetWMWindowsOpacity], XA_CARDINAL,
+				32, PropModeReplace, (unsigned char *)real_opacity,
+				1);
+	} else
+		XDeleteProperty(dpy, c->win, netatom[NetWMWindowsOpacity]);
+}
+
 void
 pop(Client *c)
 {
@@ -1563,6 +1577,7 @@ setup(void)
 	netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
 	netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
 	netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
+	netatom[NetWMWindowsOpacity] = XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False);
 	/* init cursors */
 	cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
 	cursor[CurResize] = drw_cur_create(drw, XC_sizing);
@@ -1755,6 +1770,7 @@ unfocus(Client *c, int setfocus)
 	if (!c)
 		return;
 	grabbuttons(c, 0);
+	opacity(c, inactiveopacity);
 	XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
 	if (setfocus) {
 		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
-- 
2.32.0