bool TextConsole::feed(int key) {
// interprets a keycode and perform the action (or write a letter)
RowPtr r;
LinkList<Row> &list = rows;
LinkList<Row>::iterator it = std::find(list.begin(), list.end(), cur_row);
switch(key) {
case KEY_NEWLINE:
case KEY_ENTER:
r = MakeShared<Row>();
if(it != list.end()) ++it;
list.insert(it, r);
if(cur_row->pos < cur_row->len) {
// if cursor is not at the end of the row
move_string(r, cur_row, cur_row->len - cur_row->pos);
}
cur_y++;
// scrolling
if(cur_y>h) {
it = std::find(list.begin(), list.end(), vis_row_in);
if(it != list.end() && (++it) != list.end()) {
vis_row_in = *it;
} else {
vis_row_in = NULL;
}
cur_y = h;
} // else refresh_below();
cur_row = r;
cur_x = 0;
refresh();
break;
case KEY_CTRL_L:
refresh();
break;
case KEY_BACKSPACE_ASCII:
case KEY_BACKSPACE:
case KEY_BACKSPACE_APPLE:
case KEY_BACKSPACE_SOMETIMES:
cur_row->backspace();
if(cur_x > 0) {
cur_x--; // backwards with cursor
refresh_current();
} else // backspace at the beginning of a row
if(it != list.begin()) { // there is an upper row
r = *(--it);
// upper row is empty, just delete it
if(r->len <1) {
list.erase(it);
cur_y--;
// upper row is not empty, append to end
} else {
r->pos = r->len;
move_string(r, cur_row, cur_row->len);
// delete current row (now empty)
list.erase(++it);
cur_y--;
cur_row = r;
}
if(cur_y <1) { // we are up in the screen
vis_row_in = cur_row;
cur_y = 0;
refresh();
} else { // or there is more up
// so delete a row
// cur_row->rem();
// delete cur_row;
// move cursor up one line
// cur_y--;
// refresh_below();
refresh();
}
cur_x = r->pos;
}
break;
case KEY_TAB:
if(cur_x < w) cur_x += 8;
if(cur_x > w) cur_x = w;
break;
case KEY_LEFT:
if(cur_x<=0) break;
cur_x--;
cur_row->pos--;
break;
case KEY_RIGHT:
if(cur_x >= w) break;
if(cur_row->pos >= cur_row->len) break;
cur_x++;
cur_row->pos++;
break;
case KEY_UP:
if(cur_y>0) {
cur_y--;
cur_row = *(--it);
if(cur_x > cur_row->len)
cur_x = cur_row->len;
cur_row->pos = cur_x;
} else { // scroll
if(it == list.begin()) break;
vis_row_in = cur_row = *(--it);
refresh();
}
break;
case KEY_DOWN:
if(cur_y<h) {
if(it != list.end() && (++it) != list.end()) {
cur_y++;
cur_row = *it;
// cursor positioning
if(cur_x > cur_row->len)
cur_x = cur_row->len;
cur_row->pos = cur_x;
//
}
} else { // scrolling
if(it == list.end() || (++it) == list.end()) break;
cur_row = *it;
// scroll down the pointer to upper row
it = std::find(list.begin(), list.end(), vis_row_in);
vis_row_in = *(++it);
refresh();
}
break;
default: // insert a new char
// fits in widget width?
if(cur_x < w) {
cur_row->insert_char(key);
refresh_current();
cur_x++;
} // else wrap to next line (TODO)
break;
}
return true;
}
bool TextConsole::feed(int key) {
// interprets a keycode and perform the action (or write a letter)
Row *r;
switch(key) {
case KEY_NEWLINE:
case KEY_ENTER:
r = new Row();
rows.insert_after(r, cur_row);
if(cur_row->pos < cur_row->len) {
// if cursor is not at the end of the row
move_string(r, cur_row,
cur_row->len - cur_row->pos);
}
cur_y++;
// scrolling
if(cur_y>h) {
vis_row_in = (Row*) vis_row_in->next;
cur_y = h;
} // else refresh_below();
cur_row = r;
cur_x = 0;
refresh();
break;
case KEY_CTRL_L:
refresh();
break;
case KEY_BACKSPACE_ASCII:
case KEY_BACKSPACE:
case KEY_BACKSPACE_APPLE:
case KEY_BACKSPACE_SOMETIMES:
cur_row->backspace();
if(cur_x > 0) {
cur_x--; // backwards with cursor
refresh_current();
} else // backspace at the beginning of a row
if(cur_row->prev) { // there is an upper row
r = (Row*) cur_row->prev;
// upper row is empty, just delete it
if(r->len <1) {
r->rem();
delete r;
cur_y--;
// upper row is not empty, append to end
} else {
r->pos = r->len;
move_string(r, cur_row, cur_row->len);
// delete current row (now empty)
cur_row->rem();
delete cur_row;
cur_y--;
cur_row = r;
}
if(cur_y <1) { // we are up in the screen
vis_row_in = cur_row;
cur_y = 0;
refresh();
} else { // or there is more up
// so delete a row
// cur_row->rem();
// delete cur_row;
// move cursor up one line
// cur_y--;
// refresh_below();
refresh();
}
cur_x = r->pos;
}
break;
case KEY_TAB:
if(cur_x < w) cur_x += 8;
if(cur_x > w) cur_x = w;
break;
case KEY_LEFT:
if(cur_x<=0) break;
cur_x--;
cur_row->pos--;
break;
case KEY_RIGHT:
if(cur_x >= w) break;
if(cur_row->pos >= cur_row->len) break;
cur_x++;
cur_row->pos++;
break;
case KEY_UP:
if(cur_y>0) {
cur_y--;
cur_row = (Row*) cur_row->prev;
if(cur_x > cur_row->len)
cur_x = cur_row->len;
cur_row->pos = cur_x;
} else { // scroll
if(!cur_row->prev) break;
vis_row_in = cur_row = (Row*) cur_row->prev;
refresh();
}
break;
case KEY_DOWN:
if(cur_y<h) {
if(cur_row->next) {
cur_y++;
cur_row = (Row*) cur_row->next;
// cursor positioning
if(cur_x > cur_row->len)
cur_x = cur_row->len;
cur_row->pos = cur_x;
//
}
} else { // scrolling
if(!cur_row->next) break;
cur_row = (Row*) cur_row->next;
// scroll down the pointer to upper row
vis_row_in = (Row*) vis_row_in->next;
refresh();
}
break;
default: // insert a new char
// fits in widget width?
if(cur_x < w) {
cur_row->insert_char(key);
refresh_current();
cur_x++;
} // else wrap to next line (TODO)
break;
}
return true;
}