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default plugin: add a random color background on each monitor

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Instead of a full white background, make one with a random color.
This way the different "monitors" are visible and it's easier
to debug the DBus API.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
This commit is contained in:
Giovanni Campagna 2013-07-23 11:53:04 +02:00 committed by Giovanni Campagna
parent c354e7e81b
commit fc67c707e4
1 changed files with 53 additions and 0 deletions
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53
src/compositor/plugins/default.c
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@ -24,6 +24,8 @@
#include <meta/meta-plugin.h>
#include <meta/window.h>
#include <meta/util.h>
#include <meta/meta-background-group.h>
#include <meta/meta-background-actor.h>
#include <libintl.h>
#define _(x) dgettext (GETTEXT_PACKAGE, x)
@ -113,6 +115,8 @@ struct _MetaDefaultPluginPrivate
ClutterActor *desktop1;
ClutterActor *desktop2;
ClutterActor *background_group;
MetaPluginInfo info;
};
@ -299,9 +303,58 @@ show_stage (MetaPlugin *plugin)
return FALSE;
}
static void
on_monitors_changed (MetaScreen *screen,
MetaPlugin *plugin)
{
MetaDefaultPlugin *self = META_DEFAULT_PLUGIN (plugin);
int i, n;
clutter_actor_destroy_all_children (self->priv->background_group);
n = meta_screen_get_n_monitors (screen);
for (i = 0; i < n; i++)
{
MetaRectangle rect;
ClutterActor *background;
ClutterColor color;
meta_screen_get_monitor_geometry (screen, i, &rect);
background = meta_background_actor_new ();
clutter_actor_set_position (background, rect.x, rect.y);
clutter_actor_set_size (background, rect.width, rect.height);
/* Don't use rand() here, mesa calls srand() internally when
parsing the driconf XML, but it's nice if the colors are
reproducible.
*/
clutter_color_init (&color,
g_random_int () % 255,
g_random_int () % 255,
g_random_int () % 255,
255);
clutter_actor_set_background_color (background, &color);
clutter_actor_add_child (self->priv->background_group, background);
}
}
static void
start (MetaPlugin *plugin)
{
MetaDefaultPlugin *self = META_DEFAULT_PLUGIN (plugin);
MetaScreen *screen = meta_plugin_get_screen (plugin);
self->priv->background_group = meta_background_group_new ();
clutter_actor_insert_child_below (meta_get_window_group_for_screen (screen),
self->priv->background_group, NULL);
g_signal_connect (screen, "monitors-changed",
G_CALLBACK (on_monitors_changed), plugin);
on_monitors_changed (screen, plugin);
meta_later_add (META_LATER_BEFORE_REDRAW,
(GSourceFunc) show_stage,
plugin,