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GTextEditor: Add very basic automatic indentation.

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This is off by default, but enabled by TextEditor. It simply inserts the
same number of leading spaces as the previous line when hitting Enter. :^)
This commit is contained in:
Andreas Kling 2019-04-25 22:56:09 +02:00
parent 8a3d00ac02
commit 71770e000b
5 changed files with 38 additions and 2 deletions
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22
LibGUI/GTextEditor.cpp
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@ -562,10 +562,23 @@ void GTextEditor::insert_at_cursor(char ch)
return;
}
if (at_tail || at_head) {
m_lines.insert(m_cursor.line() + (at_tail ? 1 : 0), make<Line>());
String new_line_contents;
if (m_automatic_indentation_enabled && at_tail) {
int leading_spaces = 0;
auto& old_line = *m_lines[m_cursor.line()];
for (int i = 0; i < old_line.length(); ++i) {
if (old_line.characters()[i] == ' ')
++leading_spaces;
else
break;
}
if (leading_spaces)
new_line_contents = String::repeated(' ', leading_spaces);
}
m_lines.insert(m_cursor.line() + (at_tail ? 1 : 0), make<Line>(new_line_contents));
update();
did_change();
set_cursor(m_cursor.line() + 1, 0);
set_cursor(m_cursor.line() + 1, m_lines[m_cursor.line() + 1]->length());
return;
}
auto new_line = make<Line>();
@ -709,6 +722,11 @@ GTextEditor::Line::Line()
clear();
}
GTextEditor::Line::Line(const String& text)
{
set_text(text);
}
void GTextEditor::Line::clear()
{
m_text.clear();