Resize with closest corner to cursor

2 files changed, 25 insertions, 3 deletions

diff --git a/config.def.h b/config.def.h
index a01350e..6535537 100644
--- a/config.def.h
+++ b/config.def.h
@@ -46,6 +46,8 @@ static const Rule rules[] = {
 	{ "youtube", NULL,     NULL,           0,         1,          1,          1,           0,        -1 },
 	{ NULL,      NULL,     "Event Tester", 0,         0,          1,          0,           1,        -1 }, /* xev */
 	{ "R_x11",   NULL,     NULL,           0,         0,          1,          0,           1,        -1 }, /* R popup */
+	{ "Matplotlib",NULL,   NULL,           0,         1,          1,          0,           1,        -1 }, /* Python popups */
+	{ "Dropbox-cli",NULL,  NULL,           0,         0,          1,          0,           1,        -1 },
 	{ NULL,      NULL,     "Kite",         0,         0,          0,          0,           1,        -1 },
 	{ "Arandr",  NULL,     NULL,           0,         1,          1,          0,           0,        -1 },
 };
diff --git a/dwm.c b/dwm.c
index 7229e69..c4b0c56 100644
--- a/dwm.c
+++ b/dwm.c
@@ -1667,9 +1667,14 @@ void
 resizemouse(const Arg *arg)
 {
 	int ocx, ocy, nw, nh;
+	int ocx2, ocy2, nx, ny;
 	Client *c;
 	Monitor *m;
 	XEvent ev;
+	int horizcorner, vertcorner;
+	int di;
+	unsigned int dui;
+	Window dummy;
 	Time lasttime = 0;
 
 	if (!(c = selmon->sel))
@@ -1679,10 +1684,18 @@ resizemouse(const Arg *arg)
 	restack(selmon);
 	ocx = c->x;
 	ocy = c->y;
+	ocx2 = c->x + c->w;
+	ocy2 = c->y + c->h;
 	if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
 		None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
 		return;
-	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+	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));
 	do {
 		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
 		switch(ev.type) {
@@ -1698,6 +1711,11 @@ 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);
+			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);
+
 			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)
 			{
@@ -1706,11 +1724,13 @@ resizemouse(const Arg *arg)
 					togglefloating(NULL);
 			}
 			if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
-				resize(c, c->x, c->y, nw, nh, 1);
+				resize(c, nx, ny, nw, nh, 1);
 			break;
 		}
 	} while (ev.type != ButtonRelease);
-	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+	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));
 	XUngrabPointer(dpy, CurrentTime);
 	while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 	if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {