static void
st_scroll_bar_allocate (ClutterActor *actor,
const ClutterActorBox *box,
ClutterAllocationFlags flags)
{
StScrollBar *bar = ST_SCROLL_BAR (actor);
/* Chain up */
CLUTTER_ACTOR_CLASS (st_scroll_bar_parent_class)->allocate (actor, box, flags);
scroll_bar_allocate_children (bar, box, flags);
}
static void
st_scroll_bar_map (ClutterActor *actor)
{
StScrollBarPrivate *priv = ST_SCROLL_BAR (actor)->priv;
CLUTTER_ACTOR_CLASS (st_scroll_bar_parent_class)->map (actor);
clutter_actor_map (priv->bw_stepper);
clutter_actor_map (priv->fw_stepper);
clutter_actor_map (priv->trough);
if (priv->handle)
clutter_actor_map (priv->handle);
}
static void
st_scroll_bar_pick (ClutterActor *actor,
const ClutterColor *pick_color)
{
StScrollBarPrivate *priv = ST_SCROLL_BAR (actor)->priv;
CLUTTER_ACTOR_CLASS (st_scroll_bar_parent_class)->pick (actor, pick_color);
clutter_actor_paint (priv->bw_stepper);
clutter_actor_paint (priv->fw_stepper);
clutter_actor_paint (priv->trough);
if (priv->handle && priv->adjustment)
clutter_actor_paint (priv->handle);
}
static GObject*
st_scroll_bar_constructor (GType type,
guint n_properties,
GObjectConstructParam *properties)
{
GObjectClass *gobject_class;
GObject *obj;
StScrollBar *bar;
gobject_class = G_OBJECT_CLASS (st_scroll_bar_parent_class);
obj = gobject_class->constructor (type, n_properties, properties);
bar = ST_SCROLL_BAR (obj);
g_signal_connect (bar, "notify::reactive",
G_CALLBACK (bar_reactive_notify_cb), NULL);
return obj;
}
static void
st_scroll_bar_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
StScrollBar *bar = ST_SCROLL_BAR (gobject);
switch (prop_id)
{
case PROP_ADJUSTMENT:
st_scroll_bar_set_adjustment (bar, g_value_get_object (value));
break;
case PROP_VERTICAL:
bar->priv->vertical = g_value_get_boolean (value);
if (bar->priv->vertical)
{
clutter_actor_set_name (CLUTTER_ACTOR (bar->priv->bw_stepper),
"up-stepper");
clutter_actor_set_name (CLUTTER_ACTOR (bar->priv->fw_stepper),
"down-stepper");
clutter_actor_set_name (CLUTTER_ACTOR (bar->priv->handle),
"vhandle");
}
else
{
clutter_actor_set_name (CLUTTER_ACTOR (bar->priv->fw_stepper),
"forward-stepper");
clutter_actor_set_name (CLUTTER_ACTOR (bar->priv->bw_stepper),
"backward-stepper");
clutter_actor_set_name (CLUTTER_ACTOR (bar->priv->handle),
"hhandle");
}
clutter_actor_queue_relayout ((ClutterActor*) gobject);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
st_scroll_view_fade_set_actor (ClutterActorMeta *meta,
ClutterActor *actor)
{
StScrollViewFade *self = ST_SCROLL_VIEW_FADE (meta);
ClutterActorMetaClass *parent;
g_return_if_fail (actor == NULL || ST_IS_SCROLL_VIEW (actor));
if (self->shader == COGL_INVALID_HANDLE)
{
clutter_actor_meta_set_enabled (meta, FALSE);
return;
}
if (self->vadjustment)
{
g_signal_handlers_disconnect_by_func (self->vadjustment,
(gpointer)on_vadjustment_changed,
self);
self->vadjustment = NULL;
}
if (actor)
{
StScrollView *scroll_view = ST_SCROLL_VIEW (actor);
StScrollBar *vscroll = ST_SCROLL_BAR (st_scroll_view_get_vscroll_bar (scroll_view));
self->vadjustment = ST_ADJUSTMENT (st_scroll_bar_get_adjustment (vscroll));
g_signal_connect (self->vadjustment, "changed",
G_CALLBACK (on_vadjustment_changed),
self);
on_vadjustment_changed (self->vadjustment, CLUTTER_EFFECT (self));
}
parent = CLUTTER_ACTOR_META_CLASS (st_scroll_view_fade_parent_class);
parent->set_actor (meta, actor);
/* we keep a back pointer here, to avoid going through the ActorMeta */
self->actor = clutter_actor_meta_get_actor (meta);
}
static gboolean
st_scroll_bar_scroll_event (ClutterActor *actor,
ClutterScrollEvent *event)
{
StScrollBarPrivate *priv = ST_SCROLL_BAR (actor)->priv;
gdouble lower, step, upper, value;
if (priv->adjustment)
{
g_object_get (priv->adjustment,
"lower", &lower,
"step-increment", &step,
"upper", &upper,
"value", &value,
NULL);
}
else
{
return FALSE;
}
switch (event->direction)
{
case CLUTTER_SCROLL_UP:
case CLUTTER_SCROLL_LEFT:
if (value == lower)
return FALSE;
else
st_adjustment_set_value (priv->adjustment, value - step);
break;
case CLUTTER_SCROLL_DOWN:
case CLUTTER_SCROLL_RIGHT:
if (value == upper)
return FALSE;
else
st_adjustment_set_value (priv->adjustment, value + step);
break;
}
return TRUE;
}
static gboolean
st_scroll_bar_scroll_event (ClutterActor *actor,
ClutterScrollEvent *event)
{
StScrollBarPrivate *priv = ST_SCROLL_BAR (actor)->priv;
gdouble step, value, delta_x, delta_y;
if (priv->adjustment)
{
g_object_get (priv->adjustment,
"step-increment", &step,
"value", &value,
NULL);
}
else
{
return FALSE;
}
switch (event->direction)
{
case CLUTTER_SCROLL_SMOOTH:
clutter_event_get_scroll_delta ((ClutterEvent *)event,
&delta_x, &delta_y);
if (fabs (delta_x) > fabs(delta_y))
st_adjustment_set_value (priv->adjustment, value + delta_x);
else
st_adjustment_set_value (priv->adjustment, value + delta_y);
break;
case CLUTTER_SCROLL_UP:
case CLUTTER_SCROLL_LEFT:
st_adjustment_set_value (priv->adjustment, value - step);
break;
case CLUTTER_SCROLL_DOWN:
case CLUTTER_SCROLL_RIGHT:
st_adjustment_set_value (priv->adjustment, value + step);
break;
}
return TRUE;
}
static void
st_scroll_bar_get_preferred_height (ClutterActor *self,
gfloat for_width,
gfloat *min_height_p,
gfloat *natural_height_p)
{
StScrollBar *bar = ST_SCROLL_BAR (self);
StScrollBarPrivate *priv = bar->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self));
gfloat trough_min_height, trough_natural_height;
gfloat handle_min_height, handle_natural_height;
st_theme_node_adjust_for_width (theme_node, &for_width);
_st_actor_get_preferred_height (priv->trough, for_width, TRUE,
&trough_min_height, &trough_natural_height);
_st_actor_get_preferred_height (priv->handle, for_width, TRUE,
&handle_min_height, &handle_natural_height);
if (priv->vertical)
{
if (min_height_p)
*min_height_p = trough_min_height + handle_min_height;
if (natural_height_p)
*natural_height_p = trough_natural_height + handle_natural_height;
}
else
{
if (min_height_p)
*min_height_p = MAX (trough_min_height, handle_min_height);
if (natural_height_p)
*natural_height_p = MAX (trough_natural_height, handle_natural_height);
}
st_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
}
static void
st_scroll_bar_dispose (GObject *gobject)
{
StScrollBar *bar = ST_SCROLL_BAR (gobject);
StScrollBarPrivate *priv = bar->priv;
if (priv->adjustment)
st_scroll_bar_set_adjustment (bar, NULL);
if (priv->handle)
{
g_signal_handlers_disconnect_by_func (priv->handle,
G_CALLBACK (handle_button_press_event_cb),
bar);
clutter_actor_unparent (priv->handle);
priv->handle = NULL;
}
if (priv->bw_stepper)
{
clutter_actor_unparent (priv->bw_stepper);
priv->bw_stepper = NULL;
}
if (priv->fw_stepper)
{
clutter_actor_unparent (priv->fw_stepper);
priv->fw_stepper = NULL;
}
if (priv->trough)
{
clutter_actor_unparent (priv->trough);
priv->trough = NULL;
}
G_OBJECT_CLASS (st_scroll_bar_parent_class)->dispose (gobject);
}
static void
st_scroll_bar_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
StScrollBarPrivate *priv = ST_SCROLL_BAR (gobject)->priv;
switch (prop_id)
{
case PROP_ADJUSTMENT:
g_value_set_object (value, priv->adjustment);
break;
case PROP_VERTICAL:
g_value_set_boolean (value, priv->vertical);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
st_scroll_bar_dispose (GObject *gobject)
{
StScrollBar *bar = ST_SCROLL_BAR (gobject);
StScrollBarPrivate *priv = bar->priv;
if (priv->adjustment)
st_scroll_bar_set_adjustment (bar, NULL);
if (priv->handle)
{
clutter_actor_destroy (priv->handle);
priv->handle = NULL;
}
if (priv->trough)
{
clutter_actor_destroy (priv->trough);
priv->trough = NULL;
}
G_OBJECT_CLASS (st_scroll_bar_parent_class)->dispose (gobject);
}
