/**
* mx_adjustment_interpolate_relative:
* @adjustment: A #MxAdjustment
* @offset: A #gdouble
* @duration: duration in milliseconds
* @mode: A #ClutterAnimationMode
*
* Interpolate the value of #MxAdjustment:value to a new value calculated from
* @offset.
*
*/
void
mx_adjustment_interpolate_relative (MxAdjustment *adjustment,
gdouble offset,
guint duration,
gulong mode)
{
MxAdjustmentPrivate *priv = adjustment->priv;
if (priv->interpolation)
offset += priv->new_position;
else
offset += priv->value;
mx_adjustment_interpolate (adjustment,
offset,
duration,
mode);
}
static void
stepper_move_on (MxScrollBarPrivate *priv,
gint mode)
{
double value, inc;
g_object_get (priv->adjustment,
"step-increment", &inc,
"value", &value,
NULL);
if (priv->stepper_forward)
value = value + inc;
else
value = value - inc;
mx_adjustment_interpolate (priv->adjustment, value,
PAGING_SUBSEQUENT_REPEAT_TIMEOUT, mode);
}
static gboolean
trough_paging_cb (MxScrollBar *self)
{
gfloat handle_pos, event_pos, tx, ty;
gdouble value;
gdouble page_increment;
gboolean ret;
gulong mode;
if (self->priv->paging_event_no == 0)
{
/* Scroll on after initial timeout. */
mode = CLUTTER_EASE_OUT_CUBIC;
ret = FALSE;
self->priv->paging_event_no = 1;
self->priv->paging_source_id = g_timeout_add (
PAGING_INITIAL_REPEAT_TIMEOUT,
(GSourceFunc) trough_paging_cb,
self);
}
else if (self->priv->paging_event_no == 1)
{
/* Scroll on after subsequent timeout. */
ret = FALSE;
mode = CLUTTER_EASE_IN_CUBIC;
self->priv->paging_event_no = 2;
self->priv->paging_source_id = g_timeout_add (
PAGING_SUBSEQUENT_REPEAT_TIMEOUT,
(GSourceFunc) trough_paging_cb,
self);
}
else
{
/* Keep scrolling. */
ret = TRUE;
mode = CLUTTER_LINEAR;
self->priv->paging_event_no++;
}
/* Do the scrolling */
mx_adjustment_get_values (self->priv->adjustment,
&value, NULL, NULL,
NULL, &page_increment, NULL);
if (self->priv->orientation == MX_ORIENTATION_VERTICAL)
handle_pos = clutter_actor_get_y (self->priv->handle);
else
handle_pos = clutter_actor_get_x (self->priv->handle);
clutter_actor_transform_stage_point (CLUTTER_ACTOR (self->priv->trough),
self->priv->move_x,
self->priv->move_y,
&tx, &ty);
if (self->priv->orientation == MX_ORIENTATION_VERTICAL)
event_pos = ty;
else
event_pos = tx;
if (event_pos > handle_pos)
{
if (self->priv->paging_direction == NONE)
{
/* Remember direction. */
self->priv->paging_direction = DOWN;
}
if (self->priv->paging_direction == UP)
{
/* Scrolled far enough. */
return FALSE;
}
value += page_increment;
}
else
{
if (self->priv->paging_direction == NONE)
{
/* Remember direction. */
self->priv->paging_direction = UP;
}
if (self->priv->paging_direction == DOWN)
{
/* Scrolled far enough. */
return FALSE;
}
value -= page_increment;
}
mx_adjustment_interpolate (self->priv->adjustment, value, 250, mode);
return ret;
}
static void
mex_column_notify_focused_cb (MxFocusManager *manager,
GParamSpec *pspec,
MexColumn *self)
{
GList *c;
ClutterActor *focused, *focused_cell;
gboolean cell_has_focus;
MexColumnPrivate *priv = self->priv;
focused = (ClutterActor *)mx_focus_manager_get_focused (manager);
/* Check if we have focus, and what child is focused */
focused_cell = NULL;
cell_has_focus = FALSE;
if (focused)
{
ClutterActor *parent = clutter_actor_get_parent (focused);
while (parent)
{
if (parent == (ClutterActor *)self)
{
focused_cell = focused;
cell_has_focus = TRUE;
/* Check whether focus has really moved */
if ((priv->current_focus == focused_cell) &&
!priv->has_focus_changed)
return;
priv->current_focus = focused_cell;
break;
}
focused = parent;
parent = clutter_actor_get_parent (focused);
}
}
/* Scroll the adjustment to the top */
if (!cell_has_focus && priv->adjustment)
mx_adjustment_interpolate (priv->adjustment, 0, 250,
CLUTTER_EASE_OUT_CUBIC);
if (cell_has_focus)
{
gboolean open;
open = FALSE;
for (c = priv->children; c; c = g_list_next (c))
{
ClutterActor *child = c->data;
if (priv->current_focus == child)
open = TRUE;
if (open)
mex_column_expand_child (child);
else
mex_column_shrink_child (child);
}
}
priv->has_focus_changed = FALSE;
}
static void
mex_column_notify_focused_cb (MxFocusManager *manager,
GParamSpec *pspec,
MexColumn *self)
{
GList *c;
guint offset, increment;
ClutterActor *focused, *focused_cell;
gboolean cell_has_focus, has_focus, open, set_tile_important;
MexColumnPrivate *priv = self->priv;
focused = (ClutterActor *)mx_focus_manager_get_focused (manager);
/* Check if we have focus, and what child is focused */
focused_cell = NULL;
set_tile_important = FALSE;
cell_has_focus = has_focus = FALSE;
if (focused)
{
gboolean contains_column = FALSE;
ClutterActor *parent = clutter_actor_get_parent (focused);
while (parent)
{
if (parent == (ClutterActor *)self)
{
has_focus = TRUE;
if (!priv->has_focus)
{
set_tile_important = TRUE;
priv->has_focus = TRUE;
}
if (focused != priv->header)
{
cell_has_focus = TRUE;
focused_cell = focused;
}
break;
}
else if (MEX_IS_COLUMN (parent))
{
contains_column = TRUE;
}
focused = parent;
parent = clutter_actor_get_parent (focused);
}
if (!contains_column)
has_focus = TRUE;
}
if (!has_focus && priv->has_focus)
{
priv->has_focus = FALSE;
set_tile_important = TRUE;
}
/* Scroll the adjustment to the top */
if (!cell_has_focus && priv->adjustment)
mx_adjustment_interpolate (priv->adjustment, 0, 250,
CLUTTER_EASE_OUT_CUBIC);
/* Open/close boxes as appropriate */
offset = 0;
increment = 150;
/* If we're changing the tile importance, initialise the state manager */
if (set_tile_important && priv->n_items > 0)
{
if (priv->expand_timeline)
g_object_unref (priv->expand_timeline);
priv->expand_timeline =
clutter_timeline_new (priv->n_items * increment);
clutter_timeline_set_delay (priv->expand_timeline, 350);
}
/* Loop through children and set the expander box important/unimportant
* as necessary, and if necessary, do the same for the tile inside the
* expander-box.
*/
open = has_focus && !cell_has_focus;
for (c = priv->children; c; c = c->next)
{
gchar signal_name[32+16];
ClutterActor *child = c->data;
if ((!priv->collapse && priv->has_focus) || (child == focused_cell))
open = TRUE;
if (!MEX_IS_EXPANDER_BOX (child))
continue;
/* Note, 'marker-reached::' is 16 characters long */
g_snprintf (signal_name, G_N_ELEMENTS (signal_name),
"marker-reached::%p", child);
if (MEX_IS_CONTENT_BOX (child))
{
ClutterActor *tile =
mex_content_box_get_tile (MEX_CONTENT_BOX (child));
mex_tile_set_important (MEX_TILE (tile), priv->has_focus);
}
if (!open)
{
if (priv->expand_timeline)
{
if (clutter_timeline_has_marker (priv->expand_timeline,
signal_name + 16))
clutter_timeline_remove_marker (priv->expand_timeline,
signal_name + 16);
g_signal_handlers_disconnect_by_func (priv->expand_timeline,
mex_column_expand_drawer_cb,
child);
}
mex_expander_box_set_important (MEX_EXPANDER_BOX (child), FALSE);
}
else if (set_tile_important)
{
mex_expander_box_set_important (MEX_EXPANDER_BOX (child), FALSE);
clutter_timeline_add_marker_at_time (priv->expand_timeline,
signal_name + 16, offset);
g_signal_connect_swapped (priv->expand_timeline, signal_name,
G_CALLBACK (mex_column_expand_drawer_cb),
child);
offset += increment;
}
else
mex_expander_box_set_important (MEX_EXPANDER_BOX (child), TRUE);
}
if (priv->expand_timeline && set_tile_important && (offset >= increment))
clutter_timeline_start (priv->expand_timeline);
}