When using -g hint the WM that we've got user specified geometry

Without this some window managers (e.g. fvwm) will ignore the initial
window position and place it according to it's own rules.

3 files changed, 53 insertions, 19 deletions

diff --git a/main.c b/main.c
index 936be3e..1be4cd3 100644
--- a/main.c
+++ b/main.c
@@ -26,7 +26,6 @@
 #include <sys/select.h>
 #include <sys/stat.h>
 #include <sys/time.h>
-#include <X11/Xutil.h>
 #include <X11/keysym.h>
 
 #include "types.h"
diff --git a/window.c b/window.c
index 216cfc1..5c41be3 100644
--- a/window.c
+++ b/window.c
@@ -124,6 +124,9 @@ void win_init(win_t *win) {
 	win->bar.bgcol = win_alloc_color(win, BAR_BG_COLOR);
 	win->bar.fgcol = win_alloc_color(win, BAR_FG_COLOR);
 
+	win->sizehints.flags = PWinGravity;
+	win->sizehints.win_gravity = NorthWestGravity;
+
 	if (setlocale(LC_CTYPE, "") == NULL || XSupportsLocale() == 0)
 		warn("no locale support");
 
@@ -133,17 +136,24 @@ void win_init(win_t *win) {
 }
 
 void win_set_sizehints(win_t *win) {
-	XSizeHints sizehints;
 
 	if (win == NULL || win->xwin == None)
 		return;
 
-	sizehints.flags = PMinSize | PMaxSize;
-	sizehints.min_width = win->w;
-	sizehints.max_width = win->w;
-	sizehints.min_height = win->h + win->bar.h;
-	sizehints.max_height = win->h + win->bar.h;
-	XSetWMNormalHints(win->env.dpy, win->xwin, &sizehints);
+	if ((win->sizehints.flags & PMinSize) == 1) {
+		win->sizehints.min_width = win->w;
+		win->sizehints.min_height = win->h + win->bar.h;
+	}
+	if ((win->sizehints.flags & PMaxSize) == 1) {
+		win->sizehints.max_width = win->w;
+		win->sizehints.max_height = win->h + win->bar.h;
+	}
+	if ((win->sizehints.flags & USPosition) == 1) {
+		win->sizehints.x = win->x;
+		win->sizehints.y = win->y;
+	}
+
+	XSetWMNormalHints(win->env.dpy, win->xwin, &win->sizehints);
 }
 
 void win_open(win_t *win) {
@@ -165,22 +175,42 @@ void win_open(win_t *win) {
 	else
 		gmask = XParseGeometry(options->geometry, &win->x, &win->y,
 		                       &win->w, &win->h);
-	if ((gmask & WidthValue) == 0)
+	if ((gmask & WidthValue) == 0) {
 		win->w = WIN_WIDTH;
+	} else {
+		win->sizehints.flags |= USSize;
+	}
 	if (win->w > e->scrw)
 		win->w = e->scrw;
-	if ((gmask & HeightValue) == 0)
+	if ((gmask & HeightValue) == 0) {
 		win->h = WIN_HEIGHT;
+	} else {
+		win->sizehints.flags |= USSize;
+	}
 	if (win->h > e->scrh)
 		win->h = e->scrh;
-	if ((gmask & XValue) == 0)
+	if ((gmask & XValue) == 0) {
 		win->x = (e->scrw - win->w) / 2;
-	else if ((gmask & XNegative) != 0)
-		win->x += e->scrw - win->w;
-	if ((gmask & YValue) == 0)
+	} else {
+		if ((gmask & XNegative) != 0) {
+			win->x += e->scrw - win->w;
+			win->sizehints.win_gravity = NorthEastGravity;
+		}
+		win->sizehints.flags |= USPosition;
+	}
+	if ((gmask & YValue) == 0) {
 		win->y = (e->scrh - win->h) / 2;
-	else if ((gmask & YNegative) != 0)
-		win->y += e->scrh - win->h;
+	} else {
+		if ((gmask & YNegative) != 0) {
+			win->y += e->scrh - win->h;
+			if (win->sizehints.win_gravity == NorthEastGravity) {
+				win->sizehints.win_gravity = SouthEastGravity;
+			} else {
+				win->sizehints.win_gravity = SouthWestGravity;
+			}
+		}
+		win->sizehints.flags |= USPosition;
+	}
 
 	win->xwin = XCreateWindow(e->dpy, RootWindow(e->dpy, e->scr),
 	                          win->x, win->y, win->w, win->h, 0,
@@ -220,7 +250,9 @@ void win_open(win_t *win) {
 	}
 
 	if (options->fixed_win)
-		win_set_sizehints(win);
+		win->sizehints.flags |= PMinSize | PMaxSize;
+
+	win_set_sizehints(win);
 
 	XMapWindow(e->dpy, win->xwin);
 	XFlush(e->dpy);
@@ -291,8 +323,8 @@ bool win_moveresize(win_t *win, int x, int y, unsigned int w, unsigned int h) {
 	win->w = w;
 	win->h = h - win->bar.h;
 
-	if (options->fixed_win)
-		win_set_sizehints(win);
+
+	win_set_sizehints(win);
 
 	XMoveResizeWindow(win->env.dpy, win->xwin, x, y, w, h);
 
diff --git a/window.h b/window.h
index 6bc6595..60f2864 100644
--- a/window.h
+++ b/window.h
@@ -20,6 +20,7 @@
 #define WINDOW_H
 
 #include <X11/Xlib.h>
+#include <X11/Xutil.h>
 
 #include "types.h"
 
@@ -48,6 +49,8 @@ typedef struct {
 	unsigned int h; /* = win height - bar height */
 	unsigned int bw;
 
+	XSizeHints sizehints;
+
 	bool fullscreen;
 
 	struct {