qulogic/pidgin
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Port the iconify on away plugin to the PresenceManager
6 months ago, Gary Kramlich
56a4fd2844ae
Port the iconify on away plugin to the PresenceManager
Testing Done:
Compiled.
Reviewed at https://reviews.imfreedom.org/r/2839/
/*
* Pidgin - Internet Messenger
* Copyright (C) Pidgin Developers <devel@pidgin.im>
*
* Pidgin is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
*/
#include
<gtk/gtk.h>
#include
"pidginautoadjustment.h"
struct
_PidginAutoAdjustment
{
GtkAdjustment
parent
;
gboolean
auto_scroll
;
};
G_DEFINE_TYPE
(
PidginAutoAdjustment
,
pidgin_auto_adjustment
,
GTK_TYPE_ADJUSTMENT
)
/******************************************************************************
* Callbacks
*****************************************************************************/
static
gboolean
pidgin_auto_adjustment_scroll
(
gpointer
data
)
{
GtkAdjustment
*
adjustment
=
data
;
gdouble
upper
=
0.0
;
gdouble
pagesize
=
0.0
;
upper
=
gtk_adjustment_get_upper
(
adjustment
);
pagesize
=
gtk_adjustment_get_page_size
(
adjustment
);
gtk_adjustment_set_value
(
adjustment
,
upper
-
pagesize
);
return
G_SOURCE_REMOVE
;
}
static
void
pidgin_auto_adjustment_changed
(
GtkAdjustment
*
gtk_adjustment
)
{
PidginAutoAdjustment
*
adjustment
=
PIDGIN_AUTO_ADJUSTMENT
(
gtk_adjustment
);
if
(
adjustment
->
auto_scroll
)
{
/* If we set the value here, we interrupt the updates to the other
* values of the adjustment which breaks the adjustment.
*
* The specific behavior we've seen is that the upper property doesn't
* get updated when we call set value here. Which means you can't even
* scroll down anymore in a scrolled window because you're already at
* the upper bound. However, if you scroll up, even if there's no where
* to scroll, it will update the adjustment's properties and you can
* then scroll down.
*
* By using a timeout to set the value during the next main loop
* iteration we avoid this problem.
*/
g_timeout_add
(
0
,
pidgin_auto_adjustment_scroll
,
adjustment
);
}
}
static
void
pidgin_auto_adjustment_value_changed
(
GtkAdjustment
*
gtk_adjustment
)
{
PidginAutoAdjustment
*
adjustment
=
PIDGIN_AUTO_ADJUSTMENT
(
gtk_adjustment
);
gdouble
current
=
0.0
;
gdouble
upper
=
0.0
;
gdouble
pagesize
=
0.0
;
current
=
gtk_adjustment_get_value
(
gtk_adjustment
);
upper
=
gtk_adjustment_get_upper
(
gtk_adjustment
);
pagesize
=
gtk_adjustment_get_page_size
(
gtk_adjustment
);
adjustment
->
auto_scroll
=
(
current
+
pagesize
>=
upper
);
}
/******************************************************************************
* GObject Implementation
*****************************************************************************/
static
void
pidgin_auto_adjustment_init
(
PidginAutoAdjustment
*
adjustment
)
{
adjustment
->
auto_scroll
=
TRUE
;
}
static
void
pidgin_auto_adjustment_class_init
(
PidginAutoAdjustmentClass
*
klass
)
{
GtkAdjustmentClass
*
adjustment_class
=
GTK_ADJUSTMENT_CLASS
(
klass
);
adjustment_class
->
changed
=
pidgin_auto_adjustment_changed
;
adjustment_class
->
value_changed
=
pidgin_auto_adjustment_value_changed
;
}
/******************************************************************************
* Public API
*****************************************************************************/
GtkAdjustment
*
pidgin_auto_adjustment_new
(
void
)
{
return
g_object_new
(
PIDGIN_TYPE_AUTO_ADJUSTMENT
,
NULL
);
}
void
pidgin_auto_adjustment_decrement
(
PidginAutoAdjustment
*
adjustment
)
{
gdouble
value
=
0.0
;
g_return_if_fail
(
PIDGIN_IS_AUTO_ADJUSTMENT
(
adjustment
));
value
=
gtk_adjustment_get_value
(
GTK_ADJUSTMENT
(
adjustment
));
value
-=
gtk_adjustment_get_page_increment
(
GTK_ADJUSTMENT
(
adjustment
));
gtk_adjustment_set_value
(
GTK_ADJUSTMENT
(
adjustment
),
value
);
}
void
pidgin_auto_adjustment_increment
(
PidginAutoAdjustment
*
adjustment
)
{
gdouble
value
=
0.0
;
g_return_if_fail
(
PIDGIN_IS_AUTO_ADJUSTMENT
(
adjustment
));
value
=
gtk_adjustment_get_value
(
GTK_ADJUSTMENT
(
adjustment
));
value
+=
gtk_adjustment_get_page_increment
(
GTK_ADJUSTMENT
(
adjustment
));
gtk_adjustment_set_value
(
GTK_ADJUSTMENT
(
adjustment
),
value
);
}