static void _show_title(int page)
{
mp->max_scroll = Model.num_channels + NUM_VIRT_CHANNELS > ENTRIES_PER_PAGE ?
Model.num_channels + NUM_VIRT_CHANNELS - ENTRIES_PER_PAGE
: Model.num_channels + NUM_VIRT_CHANNELS;
PAGE_ShowHeader(PAGE_GetName(PAGEID_MIXER));
GUI_CreateIcon(&gui->testico, LCD_WIDTH-128, 0, &icons[ICON_CHANTEST], show_chantest_cb, NULL);
GUI_CreateIcon(&gui->reorderico, LCD_WIDTH-96, 0, &icons[ICON_ORDER], reorder_cb, NULL);
GUI_CreateScrollbar(&gui->scroll, LCD_WIDTH-16, 32, LCD_HEIGHT-32, mp->max_scroll+1, NULL, scroll_cb, NULL);
GUI_SetScrollbar(&gui->scroll, page);
}
static void create_scrollable_objs(guiScrollable_t *scrollable, int row)
{
if (row >= 0) {
row = adjust_row(scrollable, row);
} else {
//Force row #
row = - row;
}
int offset = row - scrollable->cur_row;
if (scrollable->head && offset == 0)
return;
scrollable->cur_row = row;
int rel_row = 0;
int selectable_rows = 0;
GUI_RemoveScrollableObjs((guiObject_t *)scrollable);
guiObject_t *head = objHEAD;
objHEAD = NULL;
for(int y = scrollable->header.box.y, bottom = y + scrollable->header.box.height;
y < bottom && row < scrollable->item_count && rel_row < scrollable->max_visible_rows;
row++, rel_row++)
{
guiObject_t *row_start = get_last_object();
scrollable->row_cb(row, rel_row, y, scrollable->cb_data);
OBJ_SET_ROWSTART(row_start ? row_start->next : objHEAD, 1);
y += scrollable->row_height * (scrollable->size_cb ?
scrollable->size_cb(row, scrollable->cb_data) : 1);
if (y > bottom + scrollable->row_height - ROW_HEIGHT_OFFSET)
break; //is not selectable because it's not completely visible
selectable_rows++;
}
scrollable->visible_rows = rel_row;
scrollable->selectable_rows = selectable_rows;
scrollable->head = objHEAD;
objHEAD = head;
head = scrollable->head;
while(head) {
OBJ_SET_SCROLLABLE(head, 1);
head = head->next;
}
int scroll_pos = (2 * scrollable->cur_row + rel_row) / 2;
if (scrollable->cur_row == 0)
scroll_pos = 0;
else if(scrollable->cur_row + rel_row == scrollable->item_count)
scroll_pos = scrollable->item_count - 1;
int hidden = (rel_row >= scrollable->item_count) ? 1 : 0;
GUI_SetHidden((guiObject_t *)&scrollable->scrollbar, hidden);
if (! hidden)
GUI_SetScrollbar(&scrollable->scrollbar, scroll_pos);
}
