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frames: Handle WM_NAME

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This is the most ancient form of "window titles", not guaranteed
to be UTF-8, take the usual precautions before using this string
and keep it as a last resort.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2872>
This commit is contained in:
Carlos Garnacho 2023-02-27 14:30:38 +01:00 committed by Marge Bot
parent 6df9eab880
commit 022e20e87e
1 changed files with 64 additions and 0 deletions
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64
src/frames/meta-frame.c
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@ -37,6 +37,7 @@ struct _MetaFrame
char *net_wm_visible_name;
char *net_wm_name;
char *wm_name;
};
typedef struct
@ -83,6 +84,7 @@ meta_frame_finalize (GObject *object)
g_free (frame->net_wm_visible_name);
g_free (frame->net_wm_name);
g_free (frame->wm_name);
G_OBJECT_CLASS (meta_frame_parent_class)->finalize (object);
}
@ -291,6 +293,8 @@ update_frame_title (MetaFrame *frame)
title = frame->net_wm_visible_name;
else if (frame->net_wm_name)
title = frame->net_wm_visible_name;
else if (frame->wm_name)
title = frame->wm_name;
else
title = "";
@ -321,6 +325,63 @@ frame_sync_net_wm_name (GtkWindow *window,
update_frame_title (frame);
}
static char *
text_property_to_utf8 (GdkDisplay *display,
const XTextProperty *prop)
{
Display *xdisplay;
char *ret = NULL;
char **local_list = NULL;
int count = 0;
int res;
xdisplay = gdk_x11_display_get_xdisplay (display);
res = XmbTextPropertyToTextList (xdisplay, prop,
&local_list, &count);
if (res == XNoMemory || res == XLocaleNotSupported || res == XConverterNotFound)
goto out;
if (count == 0)
goto out;
if (!g_utf8_validate (local_list[0], -1, NULL))
ret = NULL;
else
ret = g_strdup (local_list[0]);
out:
XFreeStringList (local_list);
return ret;
}
static void
frame_sync_wm_name (GtkWindow *window,
Window client_window)
{
MetaFrame *frame = META_FRAME (window);
GdkDisplay *display;
XTextProperty text_prop;
int retval;
display = gtk_widget_get_display (GTK_WIDGET (frame));
gdk_x11_display_error_trap_push (display);
retval = XGetWMName (gdk_x11_display_get_xdisplay (display),
client_window,
&text_prop);
if (gdk_x11_display_error_trap_pop (display))
return;
if (retval == 0)
return;
frame->wm_name = text_property_to_utf8 (display, &text_prop);
update_frame_title (frame);
XFree (text_prop.value);
}
static void
frame_sync_motif_wm_hints (GtkWindow *window,
Window client_window)
@ -441,6 +502,7 @@ meta_frame_new (Window window)
frame_sync_net_wm_visible_name (GTK_WINDOW (frame), window);
frame_sync_net_wm_name (GTK_WINDOW (frame), window);
frame_sync_wm_name (GTK_WINDOW (frame), window);
frame_sync_motif_wm_hints (GTK_WINDOW (frame), window);
frame_sync_wm_normal_hints (GTK_WINDOW (frame), window);
@ -477,6 +539,8 @@ meta_frame_handle_xevent (MetaFrame *frame,
frame_sync_net_wm_visible_name (GTK_WINDOW (frame), xevent->xproperty.window);
else if (xevent->xproperty.atom == frame->atom__NET_WM_NAME)
frame_sync_net_wm_name (GTK_WINDOW (frame), xevent->xproperty.window);
else if (xevent->xproperty.atom == XA_WM_NAME)
frame_sync_wm_name (GTK_WINDOW (frame), xevent->xproperty.window);
else if (xevent->xproperty.atom == frame->atom__MOTIF_WM_HINTS)
frame_sync_motif_wm_hints (GTK_WINDOW (frame), xevent->xproperty.window);
else if (xevent->xproperty.atom == XA_WM_NORMAL_HINTS)