Libraries: Move to Userland/Libraries/

2025-07-27 05:27:45 +00:00 · 2021-01-12 12:17:30 +01:00 · 2021-01-12 12:17:30 +01:00 · 13d7c09125
commit 13d7c09125
parent dc28c07fa5
1857 changed files with 266 additions and 274 deletions
--- a/Userland/Libraries/LibVT/Line.h
+++ b/Userland/Libraries/LibVT/Line.h
@ -0,0 +1,135 @@
+/*
+ * 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/Noncopyable.h>
+#include <AK/String.h>
+#include <LibVT/XtermColors.h>
+
+namespace VT {
+
+struct Attribute {
+    Attribute() { reset(); }
+
+    static const u32 default_foreground_color = xterm_colors[7];
+    static const u32 default_background_color = xterm_colors[0];
+
+    void reset()
+    {
+        foreground_color = default_foreground_color;
+        background_color = default_background_color;
+        flags = Flags::NoAttributes;
+    }
+    u32 foreground_color;
+    u32 background_color;
+
+    u32 effective_background_color() const { return flags & Negative ? foreground_color : background_color; }
+    u32 effective_foreground_color() const { return flags & Negative ? background_color : foreground_color; }
+
+    String href;
+    String href_id;
+
+    enum Flags : u8 {
+        NoAttributes = 0x00,
+        Bold = 0x01,
+        Italic = 0x02,
+        Underline = 0x04,
+        Negative = 0x08,
+        Blink = 0x10,
+        Touched = 0x20,
+    };
+
+    bool is_untouched() const { return !(flags & Touched); }
+
+    // TODO: it would be really nice if we had a helper for enums that
+    // exposed bit ops for class enums...
+    u8 flags = Flags::NoAttributes;
+
+    bool operator==(const Attribute& other) const
+    {
+        return foreground_color == other.foreground_color && background_color == other.background_color && flags == other.flags;
+    }
+    bool operator!=(const Attribute& other) const
+    {
+        return !(*this == other);
+    }
+};
+
+class Line {
+    AK_MAKE_NONCOPYABLE(Line);
+    AK_MAKE_NONMOVABLE(Line);
+
+public:
+    explicit Line(u16 columns);
+    ~Line();
+
+    void clear(Attribute);
+    bool has_only_one_background_color() const;
+    void set_length(u16);
+
+    u16 length() const { return m_length; }
+
+    u32 code_point(size_t index) const
+    {
+        if (m_utf32)
+            return m_code_points.as_u32[index];
+        return m_code_points.as_u8[index];
+    }
+
+    void set_code_point(size_t index, u32 code_point)
+    {
+        if (!m_utf32 && code_point & 0xffffff80u)
+            convert_to_utf32();
+
+        if (m_utf32)
+            m_code_points.as_u32[index] = code_point;
+        else
+            m_code_points.as_u8[index] = code_point;
+    }
+
+    bool is_dirty() const { return m_dirty; }
+    void set_dirty(bool b) { m_dirty = b; }
+
+    const Attribute* attributes() const { return m_attributes; }
+    Attribute* attributes() { return m_attributes; }
+
+    void convert_to_utf32();
+
+    bool is_utf32() const { return m_utf32; }
+
+private:
+    union {
+        u8* as_u8;
+        u32* as_u32;
+    } m_code_points { nullptr };
+    Attribute* m_attributes { nullptr };
+    bool m_dirty { false };
+    bool m_utf32 { false };
+    u16 m_length { 0 };
+};
+
+}