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Re: [Qemu-devel] [PATCH] ui/gtk: Set QEMU window icon


From: Jan Kiszka
Subject: Re: [Qemu-devel] [PATCH] ui/gtk: Set QEMU window icon
Date: Fri, 12 Apr 2013 08:55:25 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666

On 2013-04-11 21:46, Stefan Weil wrote:
> Am 10.04.2013 13:48, schrieb Jan Kiszka:
>> On 2013-03-30 15:21, Stefan Weil wrote:
>>> The QEMU icon which is already used for SDL
>>> is now also loaded by GTK.
>>>
>>> Signed-off-by: Stefan Weil<address@hidden>
>>> ---
>>>   ui/gtk.c |   13 +++++++++++++
>>>   1 file changed, 13 insertions(+)
>>>
>>> diff --git a/ui/gtk.c b/ui/gtk.c
>>> index a5a8156..c15023b 100644
>>> --- a/ui/gtk.c
>>> +++ b/ui/gtk.c
>>> @@ -1363,6 +1363,7 @@ static const DisplayChangeListenerOps dcl_ops = {
>>>   void gtk_display_init(DisplayState *ds)
>>>   {
>>>       GtkDisplayState *s = g_malloc0(sizeof(*s));
>>> +    char *filename;
>>>
>>>       gtk_init(NULL, NULL);
>>>
>>> @@ -1394,6 +1395,18 @@ void gtk_display_init(DisplayState *ds)
>>>
>>>       gtk_notebook_append_page(GTK_NOTEBOOK(s->notebook),
>>> s->drawing_area, gtk_label_new("VGA"));
>>>
>>> +    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
>>> +    if (filename) {
>>> +        GError *error = NULL;
>>> +        GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(filename,&error);
>>> +        if (pixbuf) {
>>> +            gtk_window_set_icon(GTK_WINDOW(s->window), pixbuf);
>>> +        } else {
>>> +            g_error_free(error);
>>> +        }
>>> +        g_free(filename);
>>> +    }
>>> +
>>>       gd_create_menus(s);
>>>
>>>       gd_connect_signals(s);
>>>
>>
>> With gtk 2.22 I'm lacking transparency of that icon (it has a white
>> background). The icon is fine with SDL. Is that an issue of this
>> particular gtk version or actually a general problem with
>> gdk_pixbuf_new_from_file?
>>
>> Jan
> 
> I'm afraid that you won't get a transparent background as long
> as the image format does not support transparency.
> 
> SDL only accepts BMP files and obviously translates the white background
> to a transparent one.
> 
> I could have added a PNG icon for gtk, but did not do so because I
> thought that the BMP file looked sufficiently good (better than the
> default icon on my Debian hosts). There could be a GUI option
> which allows setting an arbitrary icon file. It would allow users
> to choose icons with transparency for gtk and also different icons
> for multiple QEMU instances.
> 
> Stefan
> 
> PS. Try the appended qemu-icon.bmp. It won't work with SDL, but show
> the desired result with gtk because it is not a BMP file, but a PNG
> file with transparent background.

Then why not use separate icons for both UIs (until SDL is removed)?

Jan


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