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/*******************************************************************************
**3456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
** 10 20 30 40 50 60 70 80
**
** notify-osd
**
** display.c - manages the display of notifications waiting in the stack/queue
**
** Copyright 2009 Canonical Ltd.
**
** Authors:
** Mirco "MacSlow" Mueller <mirco.mueller@canonical.com>
** David Barth <david.barth@canonical.com>
**
** This program is free software: you can redistribute it and/or modify it
** under the terms of the GNU General Public License version 3, as published
** by the Free Software Foundation.
**
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranties of
** MERCHANTABILITY, SATISFACTORY QUALITY, 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 <http://www.gnu.org/licenses/>.
**
*******************************************************************************/
/* This is actually part of stack.c, but moved here because it manages
the display of notifications. This is also in preparation for some
refactoring, where we'll create:
* - a distinct (non-graphical) notification.c module
* - a distinct display.c module that takes care of placing bubbles
* on the screen
*/
static Bubble*
stack_find_bubble_on_display (Stack *self)
{
GList* list = NULL;
Bubble* bubble = NULL;
g_assert (IS_STACK (self));
/* find the bubble on display */
for (list = g_list_first (self->list);
list != NULL;
list = g_list_next (list))
{
bubble = (Bubble*) list->data;
if (bubble_is_visible (bubble))
return bubble;
}
return NULL;
}
static gboolean
stack_is_at_top_corner (Stack *self, Bubble *bubble)
{
gint x, y1, y2;
g_assert (IS_STACK (self));
g_assert (IS_BUBBLE (bubble));
defaults_get_top_corner (self->defaults, &x, &y1);
bubble_get_position (bubble, &x, &y2);
return y1 == y2;
}
static void
stack_display_position_sync_bubble (Stack *self, Bubble *bubble)
{
Defaults* d = self->defaults;
gint y = 0;
gint x = 0;
defaults_get_top_corner (d, &x, &y);
// TODO: with multi-head, in focus follow mode, there may be enough
// space left on the top monitor
switch (defaults_get_slot_allocation (d))
{
case SLOT_ALLOCATION_FIXED:
if (stack_is_slot_vacant (self, SLOT_TOP))
{
stack_get_slot_position (self,
SLOT_TOP,
bubble_get_height (bubble),
&x,
&y);
if (x == -1 || y == -1)
g_warning ("%s(): No slot-coords!\n",
G_STRFUNC);
else
stack_allocate_slot (self,
bubble,
SLOT_TOP);
}
else
{
g_warning ("%s(): Top slot taken!\n",
G_STRFUNC);
}
break;
case SLOT_ALLOCATION_DYNAMIC:
// see if we're call at the wrong moment, when both
// slots are occupied by bubbles
if (!stack_is_slot_vacant (self, SLOT_TOP) &&
!stack_is_slot_vacant (self, SLOT_BOTTOM))
{
g_warning ("%s(): Both slots taken!\n",
G_STRFUNC);
}
else
{
// first check if we can place the sync. bubble
// in the top slot and the bottom slot is still
// vacant, this is to avoid the "gap" between
// bottom slot and panel
if (stack_is_slot_vacant (self, SLOT_TOP) &&
stack_is_slot_vacant (self, SLOT_BOTTOM))
{
stack_get_slot_position (self,
SLOT_TOP,
bubble_get_height (bubble),
&x,
&y);
if (x == -1 || y == -1)
g_warning ("%s(): No coords!\n",
G_STRFUNC);
else
stack_allocate_slot (self,
bubble,
SLOT_TOP);
}
// next check if top is occupied and bottom is
// still vacant, then place sync. bubble in
// bottom slot
else if (!stack_is_slot_vacant (self,
SLOT_TOP) &&
stack_is_slot_vacant (self,
SLOT_BOTTOM))
{
stack_get_slot_position (self,
SLOT_BOTTOM,
bubble_get_height (bubble),
&x,
&y);
if (x == -1 || y == -1)
g_warning ("%s(): No coords!\n",
G_STRFUNC);
else
{
stack_allocate_slot (
self,
bubble,
SLOT_BOTTOM);
bubble_sync_with (
bubble,
self->slots[SLOT_TOP]);
}
}
// this case, top vacant, bottom occupied,
// should never happen for the old placement,
// we want to avoid the "gap" between the bottom
// bubble and the panel
else if (stack_is_slot_vacant (self,
SLOT_TOP) &&
!stack_is_slot_vacant (self,
SLOT_BOTTOM))
{
g_warning ("%s(): Gap, gap, gap!!!\n",
G_STRFUNC);
}
}
break;
default :
g_warning ("Unhandled slot-allocation!\n");
break;
}
bubble_move (bubble, x, y);
}
static void
stack_display_sync_bubble (Stack *self, Bubble *bubble)
{
g_return_if_fail (IS_STACK (self));
g_return_if_fail (IS_BUBBLE (bubble));
bubble_set_timeout (bubble, 2000);
Bubble *other = stack_find_bubble_on_display (self);
if (other != NULL)
{
/* synchronize the sync bubble with
the timeout of the bubble at the bottom */
if (stack_is_at_top_corner (self, bubble))
bubble_sync_with (bubble, other);
else
bubble_sync_with (bubble, other);
bubble_refresh (other);
}
/* is the notification reusing the current bubble? */
if (sync_bubble == bubble)
{
bubble_start_timer (bubble, TRUE);
bubble_refresh (bubble);
return;
}
stack_display_position_sync_bubble (self, bubble);
bubble_fade_in (bubble, 100);
sync_bubble = bubble;
g_signal_connect (G_OBJECT (bubble),
"timed-out",
G_CALLBACK (close_handler),
self);
}
static Bubble*
stack_select_next_to_display (Stack *self)
{
Bubble* next_to_display = NULL;
GList* list = NULL;
Bubble* bubble = NULL;
/* pickup the next bubble to display */
for (list = g_list_first (self->list);
list != NULL;
list = g_list_next (list))
{
bubble = (Bubble*) list->data;
/* sync. bubbles have already been taken care of */
if (bubble_is_synchronous (bubble))
{
g_critical ("synchronous notifications are managed separately");
continue;
}
/* if there is already one bubble on display
we don't have room for another one */
if (bubble_is_visible (bubble))
return NULL;
if (bubble_is_urgent (bubble))
{
/* pick-up the /first/ urgent bubble
in the queue (FIFO) */
return bubble;
}
if (next_to_display == NULL)
next_to_display = bubble;
/* loop, in case there are urgent bubbles waiting higher up
in the stack */
}
return next_to_display;
}
static void
stack_layout (Stack* self)
{
Bubble* bubble = NULL;
Defaults* d;
gint y = 0;
gint x = 0;
g_return_if_fail (self != NULL);
bubble = stack_select_next_to_display (self);
if (bubble == NULL)
/* this actually happens when we're called for a synchronous
bubble or after a bubble timed out, but there where no other
notifications waiting in the queue */
return;
if (dnd_dont_disturb_user ()
&& (! bubble_is_urgent (bubble)))
{
guint id = bubble_get_id (bubble);
/* find entry in list corresponding to id and remove it */
self->list =
g_list_delete_link (self->list,
find_entry_by_id (self, id));
g_object_unref (bubble);
/* loop, in case there are other bubbles to discard */
stack_layout (self);
return;
}
bubble_set_timeout (bubble,
defaults_get_on_screen_timeout (self->defaults));
defaults_get_top_corner (self->defaults, &x, &y);
d = self->defaults;
switch (defaults_get_slot_allocation (d))
{
case SLOT_ALLOCATION_FIXED:
if (stack_is_slot_vacant (self, SLOT_TOP) &&
bubble_is_synchronous (bubble))
{
stack_get_slot_position (self,
SLOT_TOP,
bubble_get_height (bubble),
&x,
&y);
if (x == -1 || y == -1)
g_warning ("%s(): No coords!\n",
G_STRFUNC);
else
stack_allocate_slot (self,
bubble,
SLOT_TOP);
}
else if (stack_is_slot_vacant (self, SLOT_BOTTOM) &&
!bubble_is_synchronous (bubble))
{
stack_get_slot_position (self,
SLOT_BOTTOM,
bubble_get_height (bubble),
&x,
&y);
if (x == -1 || y == -1)
g_warning ("%s(): No coords!\n",
G_STRFUNC);
else
stack_allocate_slot (self,
bubble,
SLOT_BOTTOM);
}
else
{
g_warning ("%s(): Error while handling fixed "
"slot-allocation!\n",
G_STRFUNC);
}
break;
case SLOT_ALLOCATION_DYNAMIC:
if (stack_is_slot_vacant (self, SLOT_TOP) &&
stack_is_slot_vacant (self, SLOT_BOTTOM))
{
stack_get_slot_position (self,
SLOT_TOP,
bubble_get_height (bubble),
&x,
&y);
if (x == -1 || y == -1)
g_warning ("%s(): No coords!\n",
G_STRFUNC);
else
stack_allocate_slot (self,
bubble,
SLOT_TOP);
}
else if (!stack_is_slot_vacant (self, SLOT_TOP) &&
stack_is_slot_vacant (self, SLOT_BOTTOM))
{
stack_get_slot_position (self,
SLOT_BOTTOM,
bubble_get_height (bubble),
&x,
&y);
if (x == -1 || y == -1)
g_warning ("%s(): No coords!\n",
G_STRFUNC);
else
{
stack_allocate_slot (self,
bubble,
SLOT_BOTTOM);
if (sync_bubble != NULL &&
bubble_is_visible (sync_bubble))
{
// synchronize the sync bubble with the timeout
// of the bubble at the bottom
bubble_sync_with (self->slots[SLOT_TOP],
self->slots[SLOT_BOTTOM]);
}
}
}
else
{
g_warning ("%s(): Error while handling dynamic "
"slot-allocation!\n",
G_STRFUNC);
}
break;
default :
g_warning ("%s(): Unhandled slot-allocation scheme!\n",
G_STRFUNC);
break;
}
bubble_move (bubble, x, y);
/* TODO: adjust timings for bubbles that appear in a serie of bubbles */
if (bubble_is_urgent (bubble))
bubble_fade_in (bubble, 100);
else
bubble_fade_in (bubble, 200);
}
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