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