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Code Issues Projects Releases Packages Wiki Activity Actions 10

LibGUI: Also specialize PgUp/PgDn/Home/End in line-wrapped TextEditors

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This exposes some bugs in TextEditor's widget/document coordinate
conversions which we'll need to track down separately.
This commit is contained in:
Andreas Kling 2021-01-03 01:02:34 +01:00
parent 906e310411
commit 8b2e7628fa
Notes: sideshowbarker 2024-07-19 00:10:42 +09:00
1 changed files with 45 additions and 15 deletions
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60
Libraries/LibGUI/TextEditor.cpp
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@ -822,12 +822,19 @@ void TextEditor::keydown_event(KeyEvent& event)
return;
}
if (is_multi_line() && event.key() == KeyCode::Key_PageUp) {
if (m_cursor.line() > 0) {
size_t page_step = (size_t)visible_content_rect().height() / (size_t)line_height();
size_t new_line = m_cursor.line() < page_step ? 0 : m_cursor.line() - page_step;
size_t new_column = min(m_cursor.column(), line(new_line).length());
if (m_cursor.line() > 0 || m_line_wrapping_enabled) {
TextPosition new_cursor;
if (m_line_wrapping_enabled) {
auto position_above = cursor_content_rect().location().translated(0, -visible_content_rect().height());
new_cursor = text_position_at_content_position(position_above);
} else {
size_t page_step = (size_t)visible_content_rect().height() / (size_t)line_height();
size_t new_line = m_cursor.line() < page_step ? 0 : m_cursor.line() - page_step;
size_t new_column = min(m_cursor.column(), line(new_line).length());
new_cursor = { new_line, new_column };
}
toggle_selection_if_needed_for_event(event);
set_cursor(new_line, new_column);
set_cursor(new_cursor);
if (event.shift() && m_selection.start().is_valid()) {
m_selection.set_end(m_cursor);
did_update_selection();
@ -840,11 +847,18 @@ void TextEditor::keydown_event(KeyEvent& event)
return;
}
if (is_multi_line() && event.key() == KeyCode::Key_PageDown) {
if (m_cursor.line() < (line_count() - 1)) {
int new_line = min(line_count() - 1, m_cursor.line() + visible_content_rect().height() / line_height());
int new_column = min(m_cursor.column(), lines()[new_line].length());
if (m_cursor.line() < (line_count() - 1) || m_line_wrapping_enabled) {
TextPosition new_cursor;
if (m_line_wrapping_enabled) {
auto position_below = cursor_content_rect().location().translated(0, visible_content_rect().height());
new_cursor = text_position_at_content_position(position_below);
} else {
size_t new_line = min(line_count() - 1, m_cursor.line() + visible_content_rect().height() / line_height());
size_t new_column = min(m_cursor.column(), lines()[new_line].length());
new_cursor = { new_line, new_column };
}
toggle_selection_if_needed_for_event(event);
set_cursor(new_line, new_column);
set_cursor(new_cursor);
if (event.shift() && m_selection.start().is_valid()) {
m_selection.set_end(m_cursor);
did_update_selection();
@ -956,12 +970,21 @@ void TextEditor::keydown_event(KeyEvent& event)
return;
}
if (!event.ctrl() && event.key() == KeyCode::Key_Home) {
size_t first_nonspace_column = current_line().first_non_whitespace_column();
TextPosition new_cursor;
toggle_selection_if_needed_for_event(event);
if (m_cursor.column() == first_nonspace_column)
set_cursor(m_cursor.line(), 0);
else
set_cursor(m_cursor.line(), first_nonspace_column);
if (m_line_wrapping_enabled) {
// FIXME: Replicate the first_nonspace_column behavior in wrapping mode.
auto home_position = cursor_content_rect().location().translated(-width(), 0);
new_cursor = text_position_at_content_position(home_position);
} else {
size_t first_nonspace_column = current_line().first_non_whitespace_column();
if (m_cursor.column() == first_nonspace_column) {
new_cursor = { m_cursor.line(), 0 };
} else {
new_cursor = { m_cursor.line(), first_nonspace_column };
}
}
set_cursor(new_cursor);
if (event.shift() && m_selection.start().is_valid()) {
m_selection.set_end(m_cursor);
did_update_selection();
@ -969,8 +992,15 @@ void TextEditor::keydown_event(KeyEvent& event)
return;
}
if (!event.ctrl() && event.key() == KeyCode::Key_End) {
TextPosition new_cursor;
if (m_line_wrapping_enabled) {
auto end_position = cursor_content_rect().location().translated(width(), 0);
new_cursor = text_position_at_content_position(end_position);
} else {
new_cursor = { m_cursor.line(), current_line().length() };
}
toggle_selection_if_needed_for_event(event);
set_cursor(m_cursor.line(), current_line().length());
set_cursor(new_cursor);
if (event.shift() && m_selection.start().is_valid()) {
m_selection.set_end(m_cursor);
did_update_selection();