dwm/patches/dwm-moveresize.diff

From dd4d21ad7cebab8b6927f1446e5d1edd9cea94d5 Mon Sep 17 00:00:00 2001
From: howoz <howoz@airmail.cc>
Date: Mon, 23 Aug 2021 01:24:31 +0300
Subject: [PATCH]  [dwm][patch][moveresize] patch:

    prevent the cursor from going out of the window when resizing
---
 config.def.h |  16 ++++++
 dwm.c        | 154 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 170 insertions(+)

diff --git a/config.def.h b/config.def.h
index a2ac963..87baa38 100644
--- a/config.def.h
+++ b/config.def.h
@@ -79,6 +79,22 @@ static Key keys[] = {
 	{ MODKEY,                       XK_m,      setlayout,      {.v = &layouts[2]} },
 	{ MODKEY,                       XK_space,  setlayout,      {0} },
 	{ MODKEY|ShiftMask,             XK_space,  togglefloating, {0} },
+	{ MODKEY,                       XK_Down,   moveresize,     {.v = "0x 25y 0w 0h" } },
+	{ MODKEY,                       XK_Up,     moveresize,     {.v = "0x -25y 0w 0h" } },
+	{ MODKEY,                       XK_Right,  moveresize,     {.v = "25x 0y 0w 0h" } },
+	{ MODKEY,                       XK_Left,   moveresize,     {.v = "-25x 0y 0w 0h" } },
+	{ MODKEY|ShiftMask,             XK_Down,   moveresize,     {.v = "0x 0y 0w 25h" } },
+	{ MODKEY|ShiftMask,             XK_Up,     moveresize,     {.v = "0x 0y 0w -25h" } },
+	{ MODKEY|ShiftMask,             XK_Right,  moveresize,     {.v = "0x 0y 25w 0h" } },
+	{ MODKEY|ShiftMask,             XK_Left,   moveresize,     {.v = "0x 0y -25w 0h" } },
+	{ MODKEY|ControlMask,           XK_Up,     moveresizeedge, {.v = "t"} },
+	{ MODKEY|ControlMask,           XK_Down,   moveresizeedge, {.v = "b"} },
+	{ MODKEY|ControlMask,           XK_Left,   moveresizeedge, {.v = "l"} },
+	{ MODKEY|ControlMask,           XK_Right,  moveresizeedge, {.v = "r"} },
+	{ MODKEY|ControlMask|ShiftMask, XK_Up,     moveresizeedge, {.v = "T"} },
+	{ MODKEY|ControlMask|ShiftMask, XK_Down,   moveresizeedge, {.v = "B"} },
+	{ MODKEY|ControlMask|ShiftMask, XK_Left,   moveresizeedge, {.v = "L"} },
+	{ MODKEY|ControlMask|ShiftMask, XK_Right,  moveresizeedge, {.v = "R"} },
 	{ MODKEY,                       XK_0,      view,           {.ui = ~0 } },
 	{ MODKEY|ShiftMask,             XK_0,      tag,            {.ui = ~0 } },
 	{ MODKEY,                       XK_comma,  focusmon,       {.i = -1 } },
diff --git a/dwm.c b/dwm.c
index 5e4d494..0898236 100644
--- a/dwm.c
+++ b/dwm.c
@@ -183,6 +183,8 @@ static void mappingnotify(XEvent *e);
 static void maprequest(XEvent *e);
 static void monocle(Monitor *m);
 static void motionnotify(XEvent *e);
+static void moveresize(const Arg *arg);
+static void moveresizeedge(const Arg *arg);
 static void movemouse(const Arg *arg);
 static Client *nexttiled(Client *c);
 static void pop(Client *);
@@ -1193,6 +1195,158 @@ movemouse(const Arg *arg)
 	}
 }
 
+void
+moveresize(const Arg *arg) {
+	/* only floating windows can be moved */
+	Client *c;
+	c = selmon->sel;
+	int x, y, w, h, nx, ny, nw, nh, ox, oy, ow, oh;
+	char xAbs, yAbs, wAbs, hAbs;
+	int msx, msy, dx, dy, nmx, nmy;
+	unsigned int dui;
+	Window dummy;
+
+	if (!c || !arg)
+		return;
+	if (selmon->lt[selmon->sellt]->arrange && !c->isfloating)
+		return;
+	if (sscanf((char *)arg->v, "%d%c %d%c %d%c %d%c", &x, &xAbs, &y, &yAbs, &w, &wAbs, &h, &hAbs) != 8)
+		return;
+
+	/* compute new window position; prevent window from be positioned outside the current monitor */
+	nw = c->w + w;
+	if (wAbs == 'W')
+		nw = w < selmon->mw - 2 * c->bw ? w : selmon->mw - 2 * c->bw;
+
+	nh = c->h + h;
+	if (hAbs == 'H')
+		nh = h < selmon->mh - 2 * c->bw ? h : selmon->mh - 2 * c->bw;
+
+	nx = c->x + x;
+	if (xAbs == 'X') {
+		if (x < selmon->mx)
+			nx = selmon->mx;
+		else if (x > selmon->mx + selmon->mw)
+			nx = selmon->mx + selmon->mw - nw - 2 * c->bw;
+		else
+			nx = x;
+	}
+
+	ny = c->y + y;
+	if (yAbs == 'Y') {
+		if (y < selmon->my)
+			ny = selmon->my;
+		else if (y > selmon->my + selmon->mh)
+			ny = selmon->my + selmon->mh - nh - 2 * c->bw;
+		else
+			ny = y;
+	}
+
+	ox = c->x;
+	oy = c->y;
+	ow = c->w;
+	oh = c->h;
+
+	XRaiseWindow(dpy, c->win);
+	Bool xqp = XQueryPointer(dpy, root, &dummy, &dummy, &msx, &msy, &dx, &dy, &dui);
+	resize(c, nx, ny, nw, nh, True);
+
+	/* move cursor along with the window to avoid problems caused by the sloppy focus */
+	if (xqp && ox <= msx && (ox + ow) >= msx && oy <= msy && (oy + oh) >= msy)
+	{
+		nmx = c->x - ox + c->w - ow;
+		nmy = c->y - oy + c->h - oh;
+		/* make sure the cursor stays inside the window */
+		if ((msx + nmx) > c->x && (msy + nmy) > c->y)
+			XWarpPointer(dpy, None, None, 0, 0, 0, 0, nmx, nmy);
+	}
+}
+
+void
+moveresizeedge(const Arg *arg) {
+	/* move or resize floating window to edge of screen */
+	Client *c;
+	c = selmon->sel;
+	char e;
+	int nx, ny, nw, nh, ox, oy, ow, oh, bp;
+	int msx, msy, dx, dy, nmx, nmy;
+	int starty;
+	unsigned int dui;
+	Window dummy;
+
+	nx = c->x;
+	ny = c->y;
+	nw = c->w;
+	nh = c->h;
+
+	starty = selmon->showbar && topbar ? bh : 0;
+	bp = selmon->showbar && !topbar ? bh : 0;
+
+	if (!c || !arg)
+		return;
+	if (selmon->lt[selmon->sellt]->arrange && !c->isfloating)
+		return;
+	if(sscanf((char *)arg->v, "%c", &e) != 1)
+		return;
+
+	if(e == 't')
+		ny = starty;
+
+	if(e == 'b')
+		ny = c->h > selmon->mh - 2 * c->bw ? c->h - bp : selmon->mh - c->h - 2 * c->bw - bp;
+
+	if(e == 'l')
+		nx = selmon->mx;
+
+	if(e == 'r')
+		nx = c->w > selmon->mw - 2 * c->bw ? selmon->mx + c->w : selmon->mx + selmon->mw - c->w - 2 * c->bw;
+
+	if(e == 'T') {
+		/* if you click to resize again, it will return to old size/position */
+		if(c->h + starty == c->oldh + c->oldy) {
+			nh = c->oldh;
+			ny = c->oldy;
+		} else {
+			nh = c->h + c->y - starty;
+			ny = starty;
+		}
+	}
+
+	if(e == 'B')
+		nh = c->h + c->y + 2 * c->bw + bp == selmon->mh ? c->oldh : selmon->mh - c->y - 2 * c->bw - bp;
+
+	if(e == 'L') {
+		if(selmon->mx + c->w == c->oldw + c->oldx) {
+			nw = c->oldw;
+			nx = c->oldx;
+		} else {
+			nw = c->w + c->x - selmon->mx;
+			nx = selmon->mx;
+		}
+	}
+
+	if(e == 'R')
+		nw = c->w + c->x + 2 * c->bw == selmon->mx + selmon->mw ? c->oldw : selmon->mx + selmon->mw - c->x - 2 * c->bw;
+
+	ox = c->x;
+	oy = c->y;
+	ow = c->w;
+	oh = c->h;
+
+	XRaiseWindow(dpy, c->win);
+	Bool xqp = XQueryPointer(dpy, root, &dummy, &dummy, &msx, &msy, &dx, &dy, &dui);
+	resize(c, nx, ny, nw, nh, True);
+
+	/* move cursor along with the window to avoid problems caused by the sloppy focus */
+	if (xqp && ox <= msx && (ox + ow) >= msx && oy <= msy && (oy + oh) >= msy) {
+		nmx = c->x - ox + c->w - ow;
+		nmy = c->y - oy + c->h - oh;
+		/* make sure the cursor stays inside the window */
+		if ((msx + nmx) > c->x && (msy + nmy) > c->y)
+			XWarpPointer(dpy, None, None, 0, 0, 0, 0, nmx, nmy);
+	}
+}
+
 Client *
 nexttiled(Client *c)
 {
-- 
2.33.0