system/serenity
system/serenity
1
0
Fork 0
mirror of https://github.com/SerenityOS/serenity synced 2024-07-22 10:36:24 +00:00
Code Issues Actions 5 Packages Projects Releases Wiki Activity

HexEditor: Wrap selection and behavior in a struct

Browse source
This commit is contained in:
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
Show stats Download patch file Download diff file Expand all files Collapse all files

86
Userland/Applications/HexEditor/HexEditor.cpp
View file

@ -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);
}

12
Userland/Applications/HexEditor/HexEditor.h
View file

@ -11,6 +11,7 @@
#include "HexDocument.h"
#include "SearchResultsModel.h"
#include "Selection.h"
#include <AK/ByteBuffer.h>
#include <AK/Function.h>
#include <AK/HashMap.h>
@ -47,9 +48,9 @@ public:
GUI::UndoStack& undo_stack();
void select_all();
bool has_selection() const { return m_selection_start < m_selection_end && m_document->size() > 0; }
size_t selection_size() const;
size_t selection_start_offset() const { return m_selection_start; }
Selection const& selection() const { return m_selection; }
bool has_selection() const { return !m_selection.is_empty() && m_document->size() > 0; }
size_t selection_start_offset() const { return m_selection.start; }
bool copy_selected_text_to_clipboard();
bool copy_selected_hex_to_clipboard();
bool copy_selected_hex_to_clipboard_as_c_code();
@ -64,7 +65,7 @@ public:
Optional<size_t> find_and_highlight(ByteBuffer& needle, size_t start = 0);
Vector<Match> find_all(ByteBuffer& needle, size_t start = 0);
Vector<Match> find_all_strings(size_t min_length = 4);
Function<void(size_t, EditMode, size_t, size_t)> on_status_change; // position, edit mode, selection start, selection end
Function<void(size_t position, EditMode, Selection)> on_status_change;
Function<void(bool is_document_dirty)> on_change;
protected:
@ -81,8 +82,7 @@ private:
size_t m_content_length { 0 };
size_t m_bytes_per_row { 16 };
bool m_in_drag_select { false };
size_t m_selection_start { 0 };
size_t m_selection_end { 0 };
Selection m_selection;
size_t m_position { 0 };
bool m_cursor_at_low_nibble { false };
EditMode m_edit_mode { Hex };

10
Userland/Applications/HexEditor/HexEditorWidget.cpp
View file

@ -64,12 +64,12 @@ ErrorOr<void> HexEditorWidget::setup()
m_editor->update();
};
m_editor->on_status_change = [this](int position, HexEditor::HexEditor::EditMode edit_mode, int selection_start, int selection_end) {
m_editor->on_status_change = [this](int position, HexEditor::HexEditor::EditMode edit_mode, auto selection) {
m_statusbar->set_text(0, String::formatted("Offset: {:#08X}", position).release_value_but_fixme_should_propagate_errors());
m_statusbar->set_text(1, String::formatted("Edit Mode: {}", edit_mode == HexEditor::HexEditor::EditMode::Hex ? "Hex" : "Text").release_value_but_fixme_should_propagate_errors());
m_statusbar->set_text(2, String::formatted("Selection Start: {}", selection_start).release_value_but_fixme_should_propagate_errors());
m_statusbar->set_text(3, String::formatted("Selection End: {}", selection_end).release_value_but_fixme_should_propagate_errors());
m_statusbar->set_text(4, String::formatted("Selected Bytes: {}", m_editor->selection_size()).release_value_but_fixme_should_propagate_errors());
m_statusbar->set_text(2, String::formatted("Selection Start: {}", selection.start).release_value_but_fixme_should_propagate_errors());
m_statusbar->set_text(3, String::formatted("Selection End: {}", selection.end).release_value_but_fixme_should_propagate_errors());
m_statusbar->set_text(4, String::formatted("Selected Bytes: {}", selection.size()).release_value_but_fixme_should_propagate_errors());
bool has_selection = m_editor->has_selection();
m_copy_hex_action->set_enabled(has_selection);
@ -78,7 +78,7 @@ ErrorOr<void> HexEditorWidget::setup()
m_fill_selection_action->set_enabled(has_selection);
if (m_value_inspector_container->is_visible() && !m_selecting_from_inspector) {
update_inspector_values(selection_start);
update_inspector_values(selection.start);
}
m_selecting_from_inspector = false;
};

23
Userland/Applications/HexEditor/Selection.h Normal file
View file

@ -0,0 +1,23 @@
/*
* Copyright (c) 2024, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Types.h>
struct Selection {
size_t start { 0 };
size_t end { 0 };
void clear()
{
start = 0;
end = 0;
}
bool is_empty() const { return start == end; }
size_t size() const { return (start < end) ? (end - start) : (start - end); }
bool contains(size_t position) const { return (min(start, end) <= position) && (position < max(start, end)); }
};