mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-13 11:42:38 +03:00
fd66dda1d7
To support editing of large files it is an advantage to not load the entire file into memory but only load whatever is needed for display at the moment. To make it work, file access is abstracted into a socalled HexDocument, of which there two: a memory based and a file based one. The former can be used for newly created documents, the latter for file based editing. Hex documents now do track changes instead of the HexEditor. HexEditor only sets new values. This frees HexEditor of some responsibility.
107 lines
3.6 KiB
C++
107 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "HexDocument.h"
|
|
#include "SearchResultsModel.h"
|
|
#include <AK/ByteBuffer.h>
|
|
#include <AK/Function.h>
|
|
#include <AK/HashMap.h>
|
|
#include <AK/NonnullOwnPtrVector.h>
|
|
#include <AK/NonnullRefPtrVector.h>
|
|
#include <AK/StdLibExtras.h>
|
|
#include <LibCore/Timer.h>
|
|
#include <LibGUI/AbstractScrollableWidget.h>
|
|
#include <LibGfx/Font.h>
|
|
#include <LibGfx/TextAlignment.h>
|
|
|
|
class HexEditor : public GUI::AbstractScrollableWidget {
|
|
C_OBJECT(HexEditor)
|
|
public:
|
|
enum EditMode {
|
|
Hex,
|
|
Text
|
|
};
|
|
|
|
virtual ~HexEditor() override;
|
|
|
|
bool is_readonly() const { return m_readonly; }
|
|
void set_readonly(bool);
|
|
|
|
size_t buffer_size() const { return m_document->size(); }
|
|
bool open_new_file(size_t size);
|
|
void open_file(NonnullRefPtr<Core::File> file);
|
|
void fill_selection(u8 fill_byte);
|
|
bool save_as(int fd);
|
|
bool save();
|
|
|
|
void select_all();
|
|
bool has_selection() const { return !((m_selection_end < m_selection_start) || m_document->size()); }
|
|
size_t selection_size();
|
|
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();
|
|
|
|
size_t bytes_per_row() const { return m_bytes_per_row; }
|
|
void set_bytes_per_row(size_t);
|
|
|
|
void set_position(size_t position);
|
|
void highlight(size_t start, size_t end);
|
|
Optional<size_t> find(ByteBuffer& needle, size_t start = 0);
|
|
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()> on_change;
|
|
|
|
protected:
|
|
HexEditor();
|
|
|
|
virtual void paint_event(GUI::PaintEvent&) override;
|
|
virtual void mousedown_event(GUI::MouseEvent&) override;
|
|
virtual void mouseup_event(GUI::MouseEvent&) override;
|
|
virtual void mousemove_event(GUI::MouseEvent&) override;
|
|
virtual void keydown_event(GUI::KeyEvent&) override;
|
|
|
|
private:
|
|
bool m_readonly { false };
|
|
size_t m_line_spacing { 4 };
|
|
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 };
|
|
size_t m_position { 0 };
|
|
bool m_cursor_at_low_nibble { false };
|
|
EditMode m_edit_mode { Hex };
|
|
NonnullRefPtr<Core::Timer> m_blink_timer;
|
|
bool m_cursor_blink_active { false };
|
|
NonnullOwnPtr<HexDocument> m_document;
|
|
|
|
static constexpr int m_address_bar_width = 90;
|
|
static constexpr int m_padding = 5;
|
|
|
|
void scroll_position_into_view(size_t position);
|
|
|
|
size_t total_rows() const { return ceil_div(m_content_length, m_bytes_per_row); }
|
|
size_t line_height() const { return font().glyph_height() + m_line_spacing; }
|
|
size_t character_width() const { return font().glyph_width('W'); }
|
|
size_t cell_width() const { return character_width() * 3; }
|
|
size_t offset_margin_width() const { return 80; }
|
|
|
|
void hex_mode_keydown_event(GUI::KeyEvent&);
|
|
void text_mode_keydown_event(GUI::KeyEvent&);
|
|
|
|
void set_content_length(size_t); // I might make this public if I add fetching data on demand.
|
|
void update_status();
|
|
void did_change();
|
|
|
|
void reset_cursor_blink_state();
|
|
};
|