static void
place_quantity_widgets(home_screen_t* s)
{
int i;
rect_t rect = widget_get_rect(s->stage_widget);
sensor_info_t* active_sensors[NUM_SENSORS];
int num_active_sensors = 0;
for (i = 0; i < NUM_SENSORS; ++i) {
if (s->sensors[i].enabled) {
widget_show(s->sensors[i].quantity_widget);
active_sensors[num_active_sensors++] = &s->sensors[i];
}
else
widget_hide(s->sensors[i].quantity_widget);
}
if (num_active_sensors == 0) {
widget_show(s->sensors[SENSOR_1].quantity_widget);
active_sensors[num_active_sensors++] = &s->sensors[SENSOR_1];
}
for (i = 0; i < num_active_sensors; ++i) {
rect_t wrect = widget_get_rect(active_sensors[i]->quantity_widget);
int spacing = (rect.height - (num_active_sensors * wrect.height)) / (num_active_sensors + 1);
wrect.y = (spacing * (i + 1)) + (wrect.height * i);
widget_set_rect(active_sensors[i]->quantity_widget, wrect);
}
}
void
listbox_add_item(widget_t* lb, widget_t* item)
{
listbox_t* l = widget_get_instance_data(lb);
widget_add_child(l->item_container, item);
rect_t container_rect = widget_get_rect(l->item_container);
rect_t rect = widget_get_rect(item);
rect.x = 0;
rect.y = 0;
rect.width = MIN(rect.width, container_rect.width);
rect.height = MIN(rect.height, l->item_height);
widget_set_rect(item, rect);
widget_invalidate(lb);
}
static void
listbox_layout(widget_t* w)
{
int i;
listbox_t* l = widget_get_instance_data(w);
int visible_items = num_visible_items(w);
for (i = 0; i < widget_num_children(w); ++i) {
int visible_index = i - l->pos;
widget_t* child = widget_get_child(w, i);
if (visible_index >= 0 && visible_index < visible_items) {
rect_t child_rect = widget_get_rect(child);
child_rect.y = (visible_index * l->item_height) + ((l->item_height - child_rect.height) / 2);
widget_set_rect(child, child_rect);
widget_show(child);
}
else {
widget_hide(child);
}
}
widget_enable(l->up_button, (l->pos > 0));
widget_enable(l->dn_button, (l->pos < (widget_num_children(w) - visible_items)));
}
static int
num_visible_items(widget_t* lb)
{
listbox_t* l = widget_get_instance_data(lb);
rect_t rect = widget_get_rect(lb);
return rect.height / l->item_height;
}
static void
icon_paint(paint_event_t* event)
{
icon_t* i = widget_get_instance_data(event->widget);
rect_t rect = widget_get_rect(event->widget);
point_t center = rect_center(rect);
if (!widget_is_enabled(event->widget)) {
gfx_set_bg_color(DARK_GRAY);
gfx_clear_rect(rect);
}
/* draw icon */
if (i->image != NULL) {
gfx_set_fg_color(i->icon_color);
gfx_draw_bitmap(
center.x - (i->image->width / 2),
center.y - (i->image->height / 2),
i->image);
}
}
