From 07277cc460d73dd0c330257812180894f5c4c77e Mon Sep 17 00:00:00 2001
From: verschmelzen <ivan.komarov@protonmail.com>
Date: Tue, 30 Mar 2021 22:31:45 +0300
Subject: [PATCH] Add tapresize patch

---
 config.def.h      | 19 +++++++++++++++++++
 patch/include.c   |  3 +++
 patch/include.h   |  3 +++
 patch/tapresize.c | 38 ++++++++++++++++++++++++++++++++++++++
 patch/tapresize.h |  1 +
 patches.def.h     |  7 +++++++
 6 files changed, 71 insertions(+)
 create mode 100644 patch/tapresize.c
 create mode 100644 patch/tapresize.h

diff --git a/config.def.h b/config.def.h
index ce368ee..85ad6e9 100644
--- a/config.def.h
+++ b/config.def.h
@@ -532,6 +532,19 @@ static const int decorhints  = 1;    /* 1 means respect decoration hints */
 #define FORCE_VSPLIT 1
 #endif
 
+#if TAPRESIZE_PATCH
+/* mouse scroll resize */
+static const int scrollsensetivity = 30; /* 1 means resize window by 1 pixel for each scroll event */
+/* resizemousescroll direction argument list */
+static const int scrollargs[][2] = {
+	/* width change         height change */
+	{ +scrollsensetivity,	0 },
+	{ -scrollsensetivity,	0 },
+	{ 0, 				  	+scrollsensetivity },
+	{ 0, 					-scrollsensetivity },
+};
+#endif
+
 #if FLEXTILE_DELUXE_LAYOUT
 static const Layout layouts[] = {
 	/* symbol     arrange function, { nmaster, nstack, layout, master axis, stack axis, secondary stack axis, symbol func } */
@@ -1207,6 +1220,12 @@ static Button buttons[] = {
 	#endif // PLACEMOUSE_PATCH
 	{ ClkClientWin,         MODKEY,              Button2,        togglefloating, {0} },
 	{ ClkClientWin,         MODKEY,              Button3,        resizemouse,    {0} },
+	#if TAPRESIZE_PATCH
+	{ ClkClientWin,         MODKEY,              Button4,        resizemousescroll, {.v = &scrollargs[0]} },
+	{ ClkClientWin,         MODKEY,              Button5,        resizemousescroll, {.v = &scrollargs[1]} },
+	{ ClkClientWin,         MODKEY,              Button6,        resizemousescroll, {.v = &scrollargs[2]} },
+	{ ClkClientWin,         MODKEY,              Button7,        resizemousescroll, {.v = &scrollargs[3]} },
+    #endif // TAPRESIZE_PATCH
 	#if DRAGCFACT_PATCH && CFACTS_PATCH
 	{ ClkClientWin,         MODKEY|ShiftMask,    Button3,        dragcfact,      {0} },
 	#endif // DRAGCFACT_PATCH
diff --git a/patch/include.c b/patch/include.c
index 73c3536..02ba47b 100644
--- a/patch/include.c
+++ b/patch/include.c
@@ -268,6 +268,9 @@
 #if TAGSWAPMON_PATCH
 #include "tagswapmon.c"
 #endif
+#if TAPRESIZE_PATCH
+#include "tapresize.c"
+#endif
 #if TOGGLEFULLSCREEN_PATCH
 #include "togglefullscreen.c"
 #endif
diff --git a/patch/include.h b/patch/include.h
index 27cf77b..7aab494 100644
--- a/patch/include.h
+++ b/patch/include.h
@@ -264,6 +264,9 @@
 #if TAGSWAPMON_PATCH
 #include "tagswapmon.h"
 #endif
+#if TAPRESIZE_PATCH
+#include "tapresize.h"
+#endif
 #if TOGGLEFULLSCREEN_PATCH
 #include "togglefullscreen.h"
 #endif
diff --git a/patch/tapresize.c b/patch/tapresize.c
new file mode 100644
index 0000000..546aa50
--- /dev/null
+++ b/patch/tapresize.c
@@ -0,0 +1,38 @@
+void
+resizemousescroll(const Arg *arg)
+{
+	int nw, nh;
+	Client *c;
+	Monitor *m;
+	XEvent ev;
+	int dw = *((int*)arg->v + 1);
+	int dh = *(int*)arg->v;
+
+	if (!(c = selmon->sel))
+		return;
+	if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
+		return;
+	restack(selmon);
+	if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
+		None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
+		return;
+	nw = MAX(c->w + dw, 1);
+	nh = MAX(c->h + dh, 1);
+	if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
+	&& c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
+	{
+		if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
+		&& (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
+			togglefloating(NULL);
+	}
+	if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
+		resize(c, c->x, c->y, nw, nh, 1);
+	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+	XUngrabPointer(dpy, CurrentTime);
+	while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+	if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
+		sendmon(c, m);
+		selmon = m;
+		focus(NULL);
+	}
+}
diff --git a/patch/tapresize.h b/patch/tapresize.h
new file mode 100644
index 0000000..867f9a0
--- /dev/null
+++ b/patch/tapresize.h
@@ -0,0 +1 @@
+static void resizemousescroll(const Arg *arg);
diff --git a/patches.def.h b/patches.def.h
index 69b2d7c..fe2d1e0 100644
--- a/patches.def.h
+++ b/patches.def.h
@@ -1017,6 +1017,13 @@
  */
 #define TAGSWAPMON_PATCH 0
 
+/* This patch can be useful to the touchpad users because it allows to
+ * resize windows using Mod + two-finger scroll. It is useful when
+ * two-finger scrolling is configured in libinput.
+ * https://dwm.suckless.org/patches/tapresize/
+ */
+#define TAPRESIZE_PATCH 0
+
 /* This patch allows you to toggle fullscreen on and off using a single shortcut key.
  * https://github.com/bakkeby/patches/blob/master/dwm/dwm-togglefullscreen-6.2.diff
  */