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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#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 <LibGUI/ScrollableWidget.h>
#include <LibGfx/Font.h>
#include <LibGfx/TextAlignment.h>
class HexEditor : public GUI::ScrollableWidget {
C_OBJECT(HexEditor)
public:
enum EditMode {
Hex,
Text
};
virtual ~HexEditor() override;
bool is_readonly() const { return m_readonly; }
void set_readonly(bool);
void set_buffer(const ByteBuffer&);
void fill_selection(u8 fill_byte);
bool write_to_file(const StringView& path);
bool has_selection() const { return !(m_selection_start == -1 || m_selection_end == -1 || (m_selection_end - m_selection_start) < 0 || m_buffer.is_empty()); }
bool copy_selected_text_to_clipboard();
bool copy_selected_hex_to_clipboard();
bool copy_selected_hex_to_clipboard_as_c_code();
int bytes_per_row() const { return m_bytes_per_row; }
void set_bytes_per_row(int);
void set_position(int position);
Function<void(int, EditMode, int, int)> 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;
virtual bool accepts_focus() const override { return true; }
virtual void leave_event(Core::Event&) override;
private:
bool m_readonly { false };
int m_line_spacing { 4 };
int m_content_length { 0 };
int m_bytes_per_row { 16 };
ByteBuffer m_buffer;
bool m_in_drag_select { false };
int m_selection_start { -1 };
int m_selection_end { -1 };
HashMap<int, u8> m_tracked_changes;
int m_position { 0 };
int m_byte_position { 0 }; // 0 or 1
EditMode m_edit_mode { Hex };
void scroll_position_into_view(int position);
int total_rows() const { return ceil_div(m_content_length, m_bytes_per_row); }
int line_height() const { return font().glyph_height() + m_line_spacing; }
int character_width() const { return font().glyph_width('W'); }
int offset_margin_width() const { return 80; }
void hex_mode_keydown_event(GUI::KeyEvent&);
void text_mode_keydown_event(GUI::KeyEvent&);
void set_content_length(int); // I might make this public if I add fetching data on demand.
void update_status();
void did_change();
};
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