[MPlayer-dev-eng] How do I ensure window sizes? (Was: FUD in the MPlayer FAQ)

[Mathias Hasselmann]

Hello friends,

	Now it happend a second time that you are publishing immature
unedjucated FUD within your FAQ section:


	Q: The GUI isn't usable with icewm, because some panel are over the
	   movie!!
	A: Known, icewm is shit and dictatoric. Unsolvable. In detail:
	   icewm sucks because its taskbar overrides GUI's window resize
	   queries. If it asks for resize to 800x600, then it resizes
	   window to 800x(600-taskbar_size). It's bad. Very bad. In
	   short: shit. 


	I really wonder how such accidents can happen: Mplayer itself is
a nice piece of software. Why didn't you try to contact us to figure out
how to interpret the ICCCM*) if you had problems? You message to

	icewm-devel at lists.sourceforge.net,
	icewm-user at lists.sourceforge.net
	or to my private address

would have been welcomed. Anyway, here's the information you've would have
get if you would have asked:

	The ICCCM defines the WM_NORMAL_SIZE hint to allow clients to
request certain window size related guaranties. By using this hint you can
request a minmal size for client windows. No there still is the problem
how to move a window to a certain position. Traditinally the x/y members
and the USPosition flags of the WM_NORMAL_SIZE hint were used for this
purpose. Unfortunatlly this flags are marked to be obsolete now. Well,
Within icewm you can force windows to appear at a certain position when
you create a configure request after mapping the window? Why does it have
to be done this way? Quite simple: If IceWM would ultimately respect
geometry setting set before mapping very usefull features like workarea
limiting, smart window placement would not work.

	Ok. Enough words let's follow some code:


// ICCCM Variant 1, Somehow obsolete since XSizeHints::x, y are used
    XSizeHints hints;
    hints.flags = USPosition | PMinSize;
    hints.x = 0;
    hints.y = 0;
    hints.min_width = 2000;
    hints.min_height = 2000;
    XSetWMNormalHints(dpy, win, &hints);
    XMapWindow(dpy, win);

// ICCCM Variant 2, Somehow obsolete since XSizeHints::x, y are used
    XSizeHints hints;
    hints.flags = USPosition | UPPBaseSize;
    hints.x = 0;
    hints.y = 0;
    hints.base_width = 2000;
    hints.base_height = 2000;
    XSetWMNormalHints(dpy, win, &hints);
    XMapWindow(dpy, win);

// ICCCM Variant 3, Notice first map, than move.
    XSizeHints hints;
    hints.flags = PMinSize;
    hints.min_width = 2000;
    hints.min_height = 2000;
    XSetWMNormalHints(dpy, win, &hints);
    XMapWindow(dpy, win);
    XMoveWindow(dpy, win, 0, 0);


Ciao,
Mathias

*) As stated before __the__ reference manual for window managers.

PS: I'm not subscribed to the mplayer lists anymore: Far too much traffic
    for my taste. So you'd have to contact me per PM to answer.
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