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HexEditor: Wrap selection and behavior in a struct

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Sam Atkins 2024-01-09 20:19:45 +00:00 • committed by Sam Atkins
parent 96e8debf0b
commit 84dd0ce1ae
4 changed files with 72 additions and 59 deletions
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86
Userland/Applications/HexEditor/HexEditor.cpp
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@ -50,8 +50,7 @@ ErrorOr<void> HexEditor::open_new_file(size_t size)
set_content_length(m_document->size());
m_position = 0;
m_cursor_at_low_nibble = false;
m_selection_start = 0;
m_selection_end = 0;
m_selection.clear();
scroll_position_into_view(m_position);
update();
update_status();
@ -65,8 +64,7 @@ void HexEditor::open_file(NonnullOwnPtr<Core::File> file)
set_content_length(m_document->size());
m_position = 0;
m_cursor_at_low_nibble = false;
m_selection_start = 0;
m_selection_end = 0;
m_selection.clear();
scroll_position_into_view(m_position);
update();
update_status();
@ -80,22 +78,22 @@ ErrorOr<void> HexEditor::fill_selection(u8 fill_byte)
ByteBuffer old_values;
ByteBuffer new_values;
size_t length = m_selection_end - m_selection_start;
size_t length = m_selection.size();
new_values.resize(length);
old_values.resize(length);
for (size_t i = 0; i < length; i++) {
size_t position = m_selection_start + i;
size_t position = m_selection.start + i;
old_values[i] = m_document->get(position).value;
new_values[i] = fill_byte;
m_document->set(position, fill_byte);
}
auto result = did_complete_action(m_selection_start, move(old_values), move(new_values));
auto result = did_complete_action(m_selection.start, move(old_values), move(new_values));
if (result.is_error()) {
for (size_t i = 0; i < length; i++) {
size_t position = m_selection_start + i;
size_t position = m_selection.start + i;
m_document->set(position, old_values[i]);
}
return result;
@ -117,6 +115,7 @@ void HexEditor::set_position(size_t position)
scroll_position_into_view(position);
update_status();
}
void HexEditor::set_selection(size_t position, size_t length)
{
if (position > m_document->size() || position + length > m_document->size())
@ -124,8 +123,8 @@ void HexEditor::set_selection(size_t position, size_t length)
m_position = position;
m_cursor_at_low_nibble = false;
m_selection_start = position;
m_selection_end = position + length;
m_selection.start = position;
m_selection.end = position + length;
scroll_position_into_view(position);
update_status();
}
@ -156,20 +155,13 @@ ErrorOr<void> HexEditor::save()
return {};
}
size_t HexEditor::selection_size() const
{
if (!has_selection())
return 0;
return m_selection_end - m_selection_start;
}
bool HexEditor::copy_selected_hex_to_clipboard()
{
if (!has_selection())
return false;
StringBuilder output_string_builder;
for (size_t i = m_selection_start; i < m_selection_end; i++)
for (size_t i = m_selection.start; i < m_selection.end; i++)
output_string_builder.appendff("{:02X} ", m_document->get(i).value);
GUI::Clipboard::the().set_plain_text(output_string_builder.to_byte_string());
@ -182,7 +174,7 @@ bool HexEditor::copy_selected_text_to_clipboard()
return false;
StringBuilder output_string_builder;
for (size_t i = m_selection_start; i < m_selection_end; i++)
for (size_t i = m_selection.start; i < m_selection.end; i++)
output_string_builder.append(isprint(m_document->get(i).value) ? m_document->get(i).value : '.');
GUI::Clipboard::the().set_plain_text(output_string_builder.to_byte_string());
@ -195,11 +187,11 @@ bool HexEditor::copy_selected_hex_to_clipboard_as_c_code()
return false;
StringBuilder output_string_builder;
output_string_builder.appendff("unsigned char raw_data[{}] = {{\n", m_selection_end - m_selection_start);
output_string_builder.appendff("unsigned char raw_data[{}] = {{\n", m_selection.end - m_selection.start);
output_string_builder.append(" "sv);
for (size_t i = m_selection_start, j = 1; i < m_selection_end; i++, j++) {
for (size_t i = m_selection.start, j = 1; i < m_selection.end; i++, j++) {
output_string_builder.appendff("{:#02X}", m_document->get(i).value);
if (i >= m_selection_end - 1)
if (i >= m_selection.end - 1)
continue;
if ((j % 12) == 0)
output_string_builder.append(",\n "sv);
@ -241,11 +233,11 @@ Optional<u8> HexEditor::get_byte(size_t position)
ByteBuffer HexEditor::get_selected_bytes()
{
auto num_selected_bytes = m_selection_end - m_selection_start;
auto num_selected_bytes = m_selection.size();
ByteBuffer data;
data.ensure_capacity(num_selected_bytes);
for (size_t i = m_selection_start; i < m_selection_end; i++)
for (size_t i = m_selection.start; i < m_selection.end; i++)
data.append(m_document->get(i).value);
return data;
@ -287,8 +279,8 @@ void HexEditor::mousedown_event(GUI::MouseEvent& event)
m_cursor_at_low_nibble = false;
m_position = offset;
m_in_drag_select = true;
m_selection_start = offset;
m_selection_end = offset;
m_selection.start = offset;
m_selection.end = offset;
update();
update_status();
}
@ -309,8 +301,8 @@ void HexEditor::mousedown_event(GUI::MouseEvent& event)
m_position = offset;
m_cursor_at_low_nibble = false;
m_in_drag_select = true;
m_selection_start = offset;
m_selection_end = offset;
m_selection.start = offset;
m_selection.end = offset;
m_edit_mode = EditMode::Text;
update();
update_status();
@ -353,8 +345,8 @@ void HexEditor::mousemove_event(GUI::MouseEvent& event)
if (offset > m_document->size())
return;
m_selection_end = offset;
m_position = (m_selection_end <= m_selection_start) ? offset : offset - 1;
m_selection.end = offset;
m_position = (m_selection.end <= m_selection.start) ? offset : offset - 1;
scroll_position_into_view(offset);
}
@ -368,8 +360,8 @@ void HexEditor::mousemove_event(GUI::MouseEvent& event)
if (offset > m_document->size())
return;
m_selection_end = offset;
m_position = (m_selection_end <= m_selection_start) ? offset : offset - 1;
m_selection.end = offset;
m_position = (m_selection.end <= m_selection.start) ? offset : offset - 1;
scroll_position_into_view(offset);
}
update_status();
@ -382,11 +374,9 @@ void HexEditor::mouseup_event(GUI::MouseEvent& event)
{
if (event.button() == GUI::MouseButton::Primary) {
if (m_in_drag_select) {
if (m_selection_end < m_selection_start) {
if (m_selection.end < m_selection.start) {
// lets flip these around
auto start = m_selection_end;
m_selection_end = m_selection_start;
m_selection_start = start;
swap(m_selection.start, m_selection.end);
}
m_in_drag_select = false;
}
@ -415,14 +405,15 @@ void HexEditor::keydown_event(GUI::KeyEvent& event)
auto move_and_update_cursor_by = [&](i64 cursor_location_change) {
size_t new_position = m_position + cursor_location_change;
if (event.modifiers() & Mod_Shift) {
size_t selection_pivot = m_position == m_selection_end ? m_selection_start : m_selection_end;
size_t selection_pivot = m_position == m_selection.end ? m_selection.start : m_selection.end;
m_position = new_position;
m_selection_start = selection_pivot;
m_selection_end = m_position;
if (m_selection_start > m_selection_end)
swap(m_selection_start, m_selection_end);
} else
m_selection_start = m_selection_end = m_position = new_position;
m_selection.start = selection_pivot;
m_selection.end = m_position;
if (m_selection.start > m_selection.end)
swap(m_selection.start, m_selection.end);
} else {
m_selection.start = m_selection.end = m_position = new_position;
}
m_cursor_at_low_nibble = false;
scroll_position_into_view(m_position);
update();
@ -565,7 +556,7 @@ ErrorOr<void> HexEditor::text_mode_keydown_event(GUI::KeyEvent& event)
void HexEditor::update_status()
{
if (on_status_change)
on_status_change(m_position, m_edit_mode, m_selection_start, m_selection_end);
on_status_change(m_position, m_edit_mode, m_selection);
}
void HexEditor::did_change()
@ -659,8 +650,7 @@ void HexEditor::paint_event(GUI::PaintEvent& event)
auto high_nibble = line.substring_from_byte_offset(0, 1).release_value_but_fixme_should_propagate_errors();
auto low_nibble = line.substring_from_byte_offset(1).release_value_but_fixme_should_propagate_errors();
bool const selected = min(m_selection_start, m_selection_end) <= byte_position
&& byte_position < max(m_selection_start, m_selection_end);
bool const selected = m_selection.contains(byte_position);
// Styling priorities are as follows, with smaller numbers beating larger ones:
// 1. Modified bytes
@ -754,8 +744,8 @@ void HexEditor::select_all()
void HexEditor::highlight(size_t start, size_t end)
{
m_selection_start = start;
m_selection_end = end;
m_selection.start = start;
m_selection.end = end;
set_position(start);
}