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LibGUI+TextEditor: Add a relative line number option for TextEditor

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This adds an option for displaying relative line numbers in the ruler,
the line numbers are still absolute by default.
This commit is contained in:
Snow 2022-12-08 17:07:50 +08:00 • committed by Linus Groh
parent 1ca0898b1c
commit 0049dfd717
4 changed files with 31 additions and 1 deletions
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14
Userland/Libraries/LibGUI/TextEditor.cpp
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@ -488,9 +488,10 @@ void TextEditor::paint_event(PaintEvent& event)
if (ruler_line_rect.height() > line_height)
ruler_line_rect.set_height(line_height);
// NOTE: Use Painter::draw_text() directly here, as we want to always draw the line numbers in clear text.
size_t const line_number = is_relative_line_number() && !is_current_line ? max(i, m_cursor.line()) - min(i, m_cursor.line()) : i + 1;
painter.draw_text(
ruler_line_rect.shrunken(2, 0),
DeprecatedString::number(i + 1),
DeprecatedString::number(line_number),
is_current_line ? font().bold_variant() : font(),
Gfx::TextAlignment::CenterRight,
is_current_line ? palette().ruler_active_text() : palette().ruler_inactive_text());
@ -1427,6 +1428,8 @@ void TextEditor::set_cursor(TextPosition const& a_position)
on_cursor_change();
if (m_highlighter)
m_highlighter->cursor_did_change();
if (m_relative_line_number)
update();
}
void TextEditor::focusin_event(FocusEvent& event)
@ -2258,6 +2261,15 @@ int TextEditor::number_of_visible_lines() const
return visible_content_rect().height() / line_height();
}
void TextEditor::set_relative_line_number(bool relative)
{
if (m_relative_line_number == relative)
return;
m_relative_line_number = relative;
recompute_all_visual_lines();
update();
}
void TextEditor::set_ruler_visible(bool visible)
{
if (m_ruler_visible == visible)