Adding resizecorners patch

README.md

@@ -55,6 +55,10 @@ Refer to [https://dwm.suckless.org/](https://dwm.suckless.org/) for details on t
    - [pertag](https://dwm.suckless.org/patches/pertag/)
       - adds nmaster, mfact, layouts and more per tag rather than per monitor
 
+   - [resizecorners](https://dwm.suckless.org/patches/resizecorners/)
+      - by default, windows only resize from the bottom right corner
+      - with this patch the mouse is warped to the nearest corner and you resize from there
+
    - [systray](https://dwm.suckless.org/patches/systray/)
       - adds system tray in the status bar
 

dwm.c

@@ -1573,6 +1573,13 @@ void
 resizemouse(const Arg *arg)
 {
 	int ocx, ocy, nw, nh;
+	#if RESIZECORNERS_PATCH
+	int ocx2, ocy2, nx, ny;
+	int horizcorner, vertcorner;
+	int di;
+	unsigned int dui;
+	Window dummy;
+	#endif // RESIZECORNERS_PATCH
 	Client *c;
 	Monitor *m;
 	XEvent ev;
@@ -1585,10 +1592,24 @@ resizemouse(const Arg *arg)
 	restack(selmon);
 	ocx = c->x;
 	ocy = c->y;
+	#if RESIZECORNERS_PATCH
+	ocx2 = c->x + c->w;
+	ocy2 = c->y + c->h;
+	#endif // RESIZECORNERS_PATCH
 	if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
 		None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
 		return;
+	#if RESIZECORNERS_PATCH
+	if (!XQueryPointer (dpy, c->win, &dummy, &dummy, &di, &di, &nx, &ny, &dui))
+	       return;
+	horizcorner = nx < c->w / 2;
+	vertcorner = ny < c->h / 2;
+	XWarpPointer (dpy, None, c->win, 0, 0, 0, 0,
+		      horizcorner ? (-c->bw) : (c->w + c->bw - 1),
+		      vertcorner ? (-c->bw) : (c->h + c->bw - 1));
+	#else
 	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+	#endif // RESIZECORNERS_PATCH
 	do {
 		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
 		switch(ev.type) {
@@ -1604,6 +1625,12 @@ resizemouse(const Arg *arg)
 
 			nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
 			nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
+			#if RESIZECORNERS_PATCH
+			nx = horizcorner ? ev.xmotion.x : c->x;
+			ny = vertcorner ? ev.xmotion.y : c->y;
+			nw = MAX(horizcorner ? (ocx2 - nx) : (ev.xmotion.x - ocx - 2 * c->bw + 1), 1);
+			nh = MAX(vertcorner ? (ocy2 - ny) : (ev.xmotion.y - ocy - 2 * c->bw + 1), 1);
+			#endif // RESIZECORNERS_PATCH
 			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)
 			{
@@ -1611,12 +1638,23 @@ resizemouse(const Arg *arg)
 				&& (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
 					togglefloating(NULL);
 			}
-			if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
+			if (!selmon->lt[selmon->sellt]->arrange || c->isfloating) {
+				#if RESIZECORNERS_PATCH
+				resize(c, nx, ny, nw, nh, 1);
+				#else
 				resize(c, c->x, c->y, nw, nh, 1);
+				#endif // RESIZECORNERS_PATCH
+			}
 			break;
 		}
 	} while (ev.type != ButtonRelease);
+	#if RESIZECORNERS_PATCH
+	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
+		      horizcorner ? (-c->bw) : (c->w + c->bw - 1),
+		      vertcorner ? (-c->bw) : (c->h + c->bw - 1));
+	#else
 	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+	#endif // RESIZECORNERS_PATCH
 	XUngrabPointer(dpy, CurrentTime);
 	while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 	if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {

patches.h

@@ -81,6 +81,12 @@
  */
 #define PERTAGBAR_PATCH 0
 
+/* By default, windows only resize from the bottom right corner. With this
+ * patch the mouse is warped to the nearest corner and you resize from there.
+ * https://dwm.suckless.org/patches/resizecorners/
+ */
+#define RESIZECORNERS_PATCH 0
+
 /* The systray patch adds systray for the status bar.
  * https://dwm.suckless.org/patches/systray/
  */