static void
move_slider (MxScrollBar *bar,
gfloat x,
gfloat y)
{
MxScrollBarPrivate *priv = bar->priv;
gdouble position, lower, upper, page_size;
gfloat ux, uy, pos, size;
if (!priv->adjustment)
return;
if (!clutter_actor_transform_stage_point (priv->trough, x, y, &ux, &uy))
return;
if (priv->orientation == MX_ORIENTATION_VERTICAL)
size = clutter_actor_get_height (priv->trough)
- clutter_actor_get_height (priv->handle);
else
size = clutter_actor_get_width (priv->trough)
- clutter_actor_get_width (priv->handle);
if (size == 0)
return;
if (priv->orientation == MX_ORIENTATION_VERTICAL)
pos = uy - priv->y_origin;
else
pos = ux - priv->x_origin;
pos = CLAMP (pos, 0, size);
mx_adjustment_get_values (priv->adjustment,
NULL,
&lower,
&upper,
NULL,
NULL,
&page_size);
position = ((pos / size)
* (upper - lower - page_size))
+ lower;
mx_adjustment_set_value (priv->adjustment, position);
}
static void
mex_media_controls_replace_content (MexMediaControls *self,
MexContent *content)
{
MexPlayer *player;
MxScrollable *related_box;
MxAdjustment *adjustment;
gdouble upper;
MexMediaControlsPrivate *priv = self->priv;
if (priv->content == content)
return;
player = mex_player_get_default ();
mex_content_view_set_content (MEX_CONTENT_VIEW (player), content);
if (priv->content)
g_object_unref (priv->content);
priv->content = g_object_ref_sink (content);
mex_media_controls_update_header (self);
mex_content_view_set_content (MEX_CONTENT_VIEW (priv->queue_button),
content);
mex_push_focus ((MxFocusable*) clutter_script_get_object (priv->script,
"play-pause-button"));
related_box = (MxScrollable *)clutter_script_get_object (priv->script,
"related-box");
mx_scrollable_get_adjustments (MX_SCROLLABLE (related_box),
&adjustment, NULL);
mx_adjustment_get_values (adjustment, NULL, NULL, &upper,
NULL, NULL, NULL);
mx_adjustment_set_value (adjustment, upper);
mx_scrollable_set_adjustments (MX_SCROLLABLE (related_box),
adjustment,
NULL);
}
static void
child_adjustment_changed_cb (MxAdjustment *adjustment,
ClutterActor *bar)
{
MxScrollView *scroll;
gdouble lower, upper, page_size;
scroll = MX_SCROLL_VIEW (clutter_actor_get_parent (bar));
/* Determine if this scroll-bar should be visible */
mx_adjustment_get_values (adjustment, NULL,
&lower, &upper,
NULL, NULL,
&page_size);
if ((upper - lower) > page_size)
clutter_actor_show (bar);
else
clutter_actor_hide (bar);
/* Request a resize */
clutter_actor_queue_relayout (CLUTTER_ACTOR (scroll));
}
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
mx_scroll_bar_allocate (ClutterActor *actor,
const ClutterActorBox *box,
ClutterAllocationFlags flags)
{
MxScrollBarPrivate *priv = MX_SCROLL_BAR (actor)->priv;
MxPadding padding;
ClutterActorBox bw_box, fw_box, trough_box;
gfloat x, y, width, height, stepper_size;
/* Chain up */
CLUTTER_ACTOR_CLASS (mx_scroll_bar_parent_class)->allocate (actor, box,
flags);
mx_widget_get_padding (MX_WIDGET (actor), &padding);
/* calculate the child area */
x = padding.left;
y = padding.top;
width = (box->x2 - box->x1) - padding.left - padding.right;
height = (box->y2 - box->y1) - padding.top - padding.bottom;
if (priv->orientation == MX_ORIENTATION_VERTICAL)
{
stepper_size = width;
/* Backward stepper */
bw_box.x1 = x;
bw_box.y1 = y;
bw_box.x2 = bw_box.x1 + stepper_size;
bw_box.y2 = bw_box.y1 + stepper_size;
clutter_actor_allocate (priv->bw_stepper, &bw_box, flags);
/* Forward stepper */
fw_box.x1 = x;
fw_box.y1 = y + height - stepper_size;
fw_box.x2 = fw_box.x1 + stepper_size;
fw_box.y2 = fw_box.y1 + stepper_size;
clutter_actor_allocate (priv->fw_stepper, &fw_box, flags);
/* Trough */
trough_box.x1 = x;
trough_box.y1 = y + stepper_size;
trough_box.x2 = x + width;
trough_box.y2 = y + height - stepper_size;
clutter_actor_allocate (priv->trough, &trough_box, flags);
}
else
{
stepper_size = height;
/* Backward stepper */
bw_box.x1 = x;
bw_box.y1 = y;
bw_box.x2 = bw_box.x1 + stepper_size;
bw_box.y2 = bw_box.y1 + stepper_size;
clutter_actor_allocate (priv->bw_stepper, &bw_box, flags);
/* Forward stepper */
fw_box.x1 = x + width - stepper_size;
fw_box.y1 = y;
fw_box.x2 = fw_box.x1 + stepper_size;
fw_box.y2 = fw_box.y1 + stepper_size;
clutter_actor_allocate (priv->fw_stepper, &fw_box, flags);
/* Trough */
trough_box.x1 = x + stepper_size;
trough_box.y1 = y;
trough_box.x2 = x + width - stepper_size;
trough_box.y2 = y + height;
clutter_actor_allocate (priv->trough, &trough_box, flags);
}
if (priv->adjustment)
{
gfloat handle_size, position, avail_size, handle_pos;
gdouble value, lower, upper, page_size, increment;
ClutterActorBox handle_box = { 0, };
guint min_size, max_size;
mx_adjustment_get_values (priv->adjustment,
&value,
&lower,
&upper,
NULL,
NULL,
&page_size);
value = mx_adjustment_get_value (priv->adjustment);
if ((upper == lower)
|| (page_size >= (upper - lower)))
increment = 1.0;
else
increment = page_size / (upper - lower);
min_size = priv->handle_min_size;
mx_stylable_get (MX_STYLABLE (actor),
"mx-max-size", &max_size,
NULL);
if (upper - lower - page_size <= 0)
position = 0;
else
position = (value - lower) / (upper - lower - page_size);
if (priv->orientation == MX_ORIENTATION_VERTICAL)
{
avail_size = height - stepper_size * 2;
handle_size = increment * avail_size;
handle_size = CLAMP (handle_size, min_size, max_size);
handle_box.x1 = x;
handle_pos = bw_box.y2 + position * (avail_size - handle_size);
handle_box.y1 = CLAMP (handle_pos,
bw_box.y2, fw_box.y1 - min_size);
handle_box.x2 = handle_box.x1 + width;
handle_box.y2 = CLAMP (handle_pos + handle_size,
bw_box.y2 + min_size, fw_box.y1);
}
else
{
avail_size = width - stepper_size * 2;
handle_size = increment * avail_size;
handle_size = CLAMP (handle_size, min_size, max_size);
handle_pos = bw_box.x2 + position * (avail_size - handle_size);
handle_box.x1 = CLAMP (handle_pos,
bw_box.x2, fw_box.x1 - min_size);
handle_box.y1 = y;
handle_box.x2 = CLAMP (handle_pos + handle_size,
bw_box.x2 + min_size, fw_box.x1);
handle_box.y2 = handle_box.y1 + height;
}
/* snap to pixel */
handle_box.x1 = (int) handle_box.x1;
handle_box.y1 = (int) handle_box.y1;
handle_box.x2 = (int) handle_box.x2;
handle_box.y2 = (int) handle_box.y2;
clutter_actor_allocate (priv->handle,
&handle_box,
flags);
}
}
