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From: Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] [PATCH 0 of 7] [UPDATE] DisplayState interface change
Date: Thu, 11 Dec 2008 15:29:25 +0000
References: <492D8B94.4000805@eu.citrix.com>
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To: qemu-devel@nongnu.org
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

On Thursday 11 December 2008, Stefano Stabellini wrote:
> Paul Brook wrote:
> >> void qemu_console_resize(DisplayState *ds, int width, int height, int
> >> bpp, int linesize, uint8_t *data)
> >> {
> >>     TextConsole *s = get_graphic_console();
> >>     s->g_width = width;
> >>     s->g_height = height;
> >>     if (is_graphic_console()) {
> >>         if (data && (bpp == 16 || bpp == 32)) {
> >>             qemu_freeDisplaySurface(ds->surface);
> >>             ds->surface = qemu_createDisplaySurfaceFrom(width, height,
> >> bpp, linesize, data); } else {
> >>             ds->surface = qemu_resizeDisplaySurface(ds->surface, width,
> >> height, 32, 4 * width); }
> >>         dpy_resize(ds);
> >>     }
> >> }
> >
> > It feels wrong to be modifying the surface here. We already have to
> > recreate the surface when we switch consoles, so why can't we use the
> > same code for a resize?
>
> We use mostly the same code already.

Why only mostly?

IIUC if a console is resized while active you get different behavior to a 
console that is resized when inactive, then activated. This is wrong.

Paul