Applications: Move to Userland/Applications/

2025-07-27 10:17:35 +00:00 · 2021-01-12 12:05:23 +01:00 · 2021-01-12 12:05:23 +01:00 · dc28c07fa5
commit dc28c07fa5
parent aa939c4b4b
287 changed files with 1 additions and 1 deletions
--- a/Userland/Applications/HexEditor/HexEditor.h
+++ b/Userland/Applications/HexEditor/HexEditor.h
@ -0,0 +1,105 @@
+/*
+ * 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;
+
+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 { 0 };
+    int m_selection_end { 0 };
+    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();
+};