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Merge pull request #28811 from iwek7/editor_remove_spaces_to_closes_indention

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Change rules of indenting for spaces
This commit is contained in:
Rémi Verschelde 2019-05-24 16:21:04 +02:00 committed by GitHub
commit f173d242a2
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2 changed files with 84 additions and 44 deletions
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125
scene/gui/text_edit.cpp
View File

@ -104,6 +104,13 @@ static CharType _get_right_pair_symbol(CharType c) {
return 0;
}
static int _find_first_non_whitespace_column_of_line(const String &line) {
int left = 0;
while (left < line.length() && _is_whitespace(line[left]))
left++;
return left;
}
void TextEdit::Text::set_font(const Ref<Font> &p_font) {
font = p_font;
@ -1645,31 +1652,25 @@ void TextEdit::backspace_at_cursor() {
_consume_backspace_for_pair_symbol(prev_line, prev_column);
} else {
// handle space indentation
if (cursor.column - indent_size >= 0 && indent_using_spaces) {
// if there is enough spaces to count as a tab
if (cursor.column != 0 && indent_using_spaces) {
// check if there are no other chars before cursor, just indentation
bool unindent = true;
for (int i = 1; i <= indent_size; i++) {
if (text[cursor.line][cursor.column - i] != ' ') {
unindent = false;
break;
}
}
// and it is before the first character
int i = 0;
while (i < cursor.column && i < text[cursor.line].length()) {
if (text[cursor.line][i] != ' ' && text[cursor.line][i] != '\t') {
if (!_is_whitespace(text[cursor.line][i])) {
unindent = false;
break;
}
i++;
}
// then we can remove it as a single character.
// then we can remove all spaces as a single character.
if (unindent) {
_remove_text(cursor.line, cursor.column - indent_size, cursor.line, cursor.column);
prev_column = cursor.column - indent_size;
// we want to remove spaces up to closest indent
// or whole indent if cursor is pointing at it
int spaces_to_delete = _calculate_spaces_till_next_left_indent(cursor.column);
prev_column = cursor.column - spaces_to_delete;
_remove_text(cursor.line, prev_column, cursor.line, cursor.column);
} else {
_remove_text(prev_line, prev_column, cursor.line, cursor.column);
}
@ -1686,6 +1687,10 @@ void TextEdit::indent_right() {
int start_line;
int end_line;
// this value informs us by how much we changed selection position by indenting right
// default is 1 for tab indentation
int selection_offset = 1;
begin_complex_operation();
if (is_selection_active()) {
@ -1704,18 +1709,24 @@ void TextEdit::indent_right() {
for (int i = start_line; i <= end_line; i++) {
String line_text = get_line(i);
if (indent_using_spaces) {
line_text = space_indent + line_text;
// we don't really care where selection is - we just need to know indentation level at the beginning of the line
int left = _find_first_non_whitespace_column_of_line(line_text);
int spaces_to_add = _calculate_spaces_till_next_right_indent(left);
// since we will add this much spaces we want move whole selection and cursor by this much
selection_offset = spaces_to_add;
for (int j = 0; j < spaces_to_add; j++)
line_text = ' ' + line_text;
} else {
line_text = '\t' + line_text;
}
set_line(i, line_text);
}
// fix selection and cursor being off by one on the last line
// fix selection and cursor being off after shifting selection right
if (is_selection_active()) {
select(selection.from_line, selection.from_column + 1, selection.to_line, selection.to_column + 1);
select(selection.from_line, selection.from_column + selection_offset, selection.to_line, selection.to_column + selection_offset);
}
cursor_set_column(cursor.column + 1, false);
cursor_set_column(cursor.column + selection_offset, false);
end_complex_operation();
update();
}
@ -1724,6 +1735,15 @@ void TextEdit::indent_left() {
int start_line;
int end_line;
// moving cursor and selection after unindenting can get tricky
// because changing content of line can move cursor and selection on it's own (if new line ends before previous position of either)
// therefore we just remember initial values
// and at the end of the operation offset them by number of removed characters
int removed_characters = 0;
int initial_selection_end_column = selection.to_column;
int initial_cursor_column = cursor.column;
begin_complex_operation();
if (is_selection_active()) {
@ -1746,21 +1766,43 @@ void TextEdit::indent_left() {
if (line_text.begins_with("\t")) {
line_text = line_text.substr(1, line_text.length());
set_line(i, line_text);
} else if (line_text.begins_with(space_indent)) {
line_text = line_text.substr(indent_size, line_text.length());
removed_characters = 1;
} else if (line_text.begins_with(" ")) {
// when unindenting we aim to remove spaces before line that has selection no matter what is selected
// so we start of by finding first non whitespace character of line
int left = _find_first_non_whitespace_column_of_line(line_text);
// here we remove only enough spaces to align text to nearest full multiple of indentation_size
// in case where selection begins at the start of indentation_size multiple we remove whole indentation level
int spaces_to_remove = _calculate_spaces_till_next_left_indent(left);
line_text = line_text.substr(spaces_to_remove, line_text.length());
set_line(i, line_text);
removed_characters = spaces_to_remove;
}
}
// fix selection and cursor being off by one on the last line
if (is_selection_active() && last_line_text != get_line(end_line)) {
select(selection.from_line, selection.from_column - 1, selection.to_line, selection.to_column - 1);
select(selection.from_line, selection.from_column - removed_characters,
selection.to_line, initial_selection_end_column - removed_characters);
}
cursor_set_column(cursor.column - 1, false);
cursor_set_column(initial_cursor_column - removed_characters, false);
end_complex_operation();
update();
}
int TextEdit::_calculate_spaces_till_next_left_indent(int column) {
int spaces_till_indent = column % indent_size;
if (spaces_till_indent == 0)
spaces_till_indent = indent_size;
return spaces_till_indent;
}
int TextEdit::_calculate_spaces_till_next_right_indent(int column) {
return indent_size - column % indent_size;
}
void TextEdit::_get_mouse_pos(const Point2i &p_mouse, int &r_row, int &r_col) const {
float rows = p_mouse.y;
@ -2517,15 +2559,11 @@ void TextEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
} else {
if (k->get_shift()) {
//simple unindent
// simple unindent
int cc = cursor.column;
const int len = text[cursor.line].length();
const String &line = text[cursor.line];
int left = 0; // number of whitespace chars at beginning of line
while (left < len && (line[left] == '\t' || line[left] == ' '))
left++;
int left = _find_first_non_whitespace_column_of_line(line);
cc = MIN(cc, left);
while (cc < indent_size && cc < left && line[cc] == ' ')
@ -2533,24 +2571,18 @@ void TextEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
if (cc > 0 && cc <= text[cursor.line].length()) {
if (text[cursor.line][cc - 1] == '\t') {
// tabs unindentation
_remove_text(cursor.line, cc - 1, cursor.line, cc);
if (cursor.column >= left)
cursor_set_column(MAX(0, cursor.column - 1));
update();
} else {
int n = 0;
for (int i = 1; i <= MIN(cc, indent_size); i++) {
if (line[cc - i] != ' ') {
break;
}
n++;
}
if (n > 0) {
_remove_text(cursor.line, cc - n, cursor.line, cc);
if (cursor.column > left - n) // inside text?
cursor_set_column(MAX(0, cursor.column - n));
// spaces unindentation
int spaces_to_remove = _calculate_spaces_till_next_left_indent(cc);
if (spaces_to_remove > 0) {
_remove_text(cursor.line, cc - spaces_to_remove, cursor.line, cc);
if (cursor.column > left - spaces_to_remove) // inside text?
cursor_set_column(MAX(0, cursor.column - spaces_to_remove));
update();
}
}
@ -2559,9 +2591,14 @@ void TextEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
update();
}
} else {
//simple indent
// simple indent
if (indent_using_spaces) {
_insert_text_at_cursor(space_indent);
// insert only as much spaces as needed till next indentation level
int spaces_to_add = _calculate_spaces_till_next_right_indent(cursor.column);
String indent_to_insert = String();
for (int i = 0; i < spaces_to_add; i++)
indent_to_insert = ' ' + indent_to_insert;
_insert_text_at_cursor(indent_to_insert);
} else {
_insert_text_at_cursor("\t");
}

3
scene/gui/text_edit.h
View File

@ -437,6 +437,9 @@ private:
void _confirm_completion();
void _update_completion_candidates();
int _calculate_spaces_till_next_left_indent(int column);
int _calculate_spaces_till_next_right_indent(int column);
protected:
virtual String get_tooltip(const Point2 &p_pos) const;