void iterate_by_page(Parts db, size_t page_size, void (*record_op)(Part), int(*interval_op)(void))
{
if (db->count == 0)
return;
int rc = 0;
Node *n;
size_t i;
/* print first outside of loop to avoid a pause after the first;
* otherwise we'd have to test for > 0 every iteration
*/
record_op(db->head->part);
for (i = 1, n = db->head->next; n != NULL; n = n->next, i++) {
if (i % page_size == 0) {
if ((rc = interval_op()) == -2) {
return;
} else if (rc == -3) {
continue; /* 'end' function will require doubly linked list */
} else if (rc > -1) {
n = approximate_node(db, rc);
}
}
record_op(n->part);
}
}
void code_editor_widget::on_slider_move(double value)
{
if(record_op("slider")) {
save_undo_state();
}
std::ostringstream s;
value = (value - 0.5)*2.0; // normalize to [-1.0,1.0] range.
const decimal new_value(value*slider_magnitude_);
if(slider_decimal_) {
s << new_value;
} else {
s << new_value.as_int();
}
std::string new_string = s.str();
ASSERT_LOG(row_slider_ >= 0 && row_slider_ < get_data().size(), "Illegal row value for slider: " << row_slider_ << " / " << get_data().size());
std::string row = get_data()[row_slider_];
row.erase(row.begin() + begin_col_slider_, row.begin() + end_col_slider_);
row.insert(row.begin() + begin_col_slider_, new_string.begin(), new_string.end());
const int old_end = end_col_slider_;
end_col_slider_ = begin_col_slider_ + new_string.size();
if(cursor_row() == row_slider_ && cursor_col() == old_end) {
set_cursor(cursor_row(), end_col_slider_);
}
set_row_contents(row_slider_, row);
}