From 3ddd6032fb60b780cb628d0a1866f1f2d5febf0b Mon Sep 17 00:00:00 2001
From: Bakkeby <bakkeby@gmail.com>
Date: Mon, 10 Jan 2022 13:31:54 +0100
Subject: [PATCH] resizepoint - Like resizecorners, but does not warp mouse 
 pointer

---
 dwm.c | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/dwm.c b/dwm.c
index a96f33c..6f5d833 100644
--- a/dwm.c
+++ b/dwm.c
@@ -58,7 +58,7 @@
 #define TEXTW(X)                (drw_fontset_getwidth(drw, (X)) + lrpad)
 
 /* enums */
-enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
+enum { CurResizeBR, CurResizeBL, CurResizeTR, CurResizeTL, CurNormal, CurMove, CurLast }; /* cursor */
 enum { SchemeNorm, SchemeSel }; /* color schemes */
 enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
        NetWMFullscreen, NetActiveWindow, NetWMWindowType,
@@ -1294,10 +1294,13 @@ resizeclient(Client *c, int x, int y, int w, int h)
 void
 resizemouse(const Arg *arg)
 {
-	int ocx, ocy, nw, nh;
+	int opx, opy, ocx, ocy, och, ocw, nx, ny, nw, nh;
 	Client *c;
 	Monitor *m;
 	XEvent ev;
+	int horizcorner, vertcorner;
+	unsigned int dui;
+	Window dummy;
 	Time lasttime = 0;
 
 	if (!(c = selmon->sel))
@@ -1307,10 +1310,15 @@ resizemouse(const Arg *arg)
 	restack(selmon);
 	ocx = c->x;
 	ocy = c->y;
+	och = c->h;
+	ocw = c->w;
+	if (!XQueryPointer(dpy, c->win, &dummy, &dummy, &opx, &opy, &nx, &ny, &dui))
+		return;
+	horizcorner = nx < c->w / 2;
+	vertcorner  = ny < c->h / 2;
 	if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
-		None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
+		None, cursor[horizcorner | (vertcorner << 1)]->cursor, CurrentTime) != GrabSuccess)
 		return;
-	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
 	do {
 		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
 		switch(ev.type) {
@@ -1324,8 +1332,10 @@ resizemouse(const Arg *arg)
 				continue;
 			lasttime = ev.xmotion.time;
 
-			nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
-			nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
+			nx = horizcorner ? (ocx + ev.xmotion.x - opx) : c->x;
+			ny = vertcorner ? (ocy + ev.xmotion.y - opy) : c->y;
+			nw = MAX(horizcorner ? (ocx + ocw - nx) : (ocw + (ev.xmotion.x - opx)), 1);
+			nh = MAX(vertcorner ? (ocy + och - ny) : (och + (ev.xmotion.y - opy)), 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)
 			{
@@ -1334,11 +1344,10 @@ resizemouse(const Arg *arg)
 					togglefloating(NULL);
 			}
 			if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
-				resize(c, c->x, c->y, nw, nh, 1);
+				resizeclient(c, nx, ny, nw, nh);
 			break;
 		}
 	} while (ev.type != ButtonRelease);
-	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) {
@@ -1568,7 +1577,10 @@ setup(void)
 	netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
 	/* init cursors */
 	cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
-	cursor[CurResize] = drw_cur_create(drw, XC_sizing);
+	cursor[CurResizeBR] = drw_cur_create(drw, XC_bottom_right_corner);
+	cursor[CurResizeBL] = drw_cur_create(drw, XC_bottom_left_corner);
+	cursor[CurResizeTR] = drw_cur_create(drw, XC_top_right_corner);
+	cursor[CurResizeTL] = drw_cur_create(drw, XC_top_left_corner);
 	cursor[CurMove] = drw_cur_create(drw, XC_fleur);
 	/* init appearance */
 	scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
-- 
2.19.1