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Re: [Qemu-devel] [PATCH] Embed QEmu screen on a custom window

From: Oliver Gerlich
Subject: Re: [Qemu-devel] [PATCH] Embed QEmu screen on a custom window
Date: Sat, 28 May 2005 16:10:06 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.7.8) Gecko/20050513 Debian/1.7.8-1

Christian MICHON wrote:
ok, maybe this needs clarifications. I do not have a Mac, therefore anything
related to cocoa is unknow to me. sorry :(

Let's take an instance of i386-softmmu qemu, which has switched internally
into a 1024x768 graphical mode. To have any gui toolkit AROUND it, the
whole apps, inclusive of the window manager decoration, would need more
than 1024x768 pixels.

When going full screen, as if the qemu machine was the host, we should see
1024x768 pixels only on the screen. The gui toolkit would not be
drawn, therefore
useless unless you switch back to non-fullscreen.

Having the gui toolkit around the instance is ok, provided your native screen
resolution is big enough. But if it's not, you'll need scrollbars, or reduce the
internal graphical mode.

Let's take another concrete example. I have on my desktop a PC with XP
and a LCD 15 inches which support at most 1024x768. When I launch a qemu
instance and the internal softmmu graphical mode is 800x600, how much space
is left on screen, considering the taskbar at the botton and the qemu titlebar ?

100 pixels in height and 200 pixels in x. Not much to integrate a gtk2 toolbars
and a menu, right ? Actually, it will be just nice. only for 800x600
qemu graphic

My point is: what it the controls could be drawn inside the qemu
graphic windows,
like an On-Screen-Display. You would call a menu, overlapping the
current session,
and you could select the controls you want to change (mostly fda and cdrom, or
load/save vm). The advantage of this being inside the main graphic
window is that
even inside a full-screen mode, we could access it.

But I understand Fabrice's point. After all, this is his "baby". :)

Qemu-devel mailing list

Coming to think of it, I happen to like the idea of an OSD :) . Although I use Qemu mostly in windowed mode with 1024x786 on a 1280x1024 screen (windowed mode is nice for having Visual Studio in Qemu and Mozilla Browser with MSDN under Linux), there are situations where fullscreen mode is better. And in these cases a little OSD would be nice, with buttons to change CDs, suspend the guest, stop the guest, and maybe seeing the current guest CPU load and guest HDD activity. Maybe the OSD should be similar to the little top bar in Windows Terminal Server connections (IIRC it makes it possible to get out of from fullscreen mode).
As such, an OSD in addition to the GUI would be really useful I think.

Just my two cents,
Oliver Gerlich

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