mirror of
https://github.com/RGBCube/serenity
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135 lines
4 KiB
C++
135 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/Noncopyable.h>
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#include <AK/String.h>
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#include <LibVT/XtermColors.h>
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namespace VT {
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struct Attribute {
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Attribute() { reset(); }
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static const u32 default_foreground_color = xterm_colors[7];
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static const u32 default_background_color = xterm_colors[0];
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void reset()
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{
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foreground_color = default_foreground_color;
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background_color = default_background_color;
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flags = Flags::NoAttributes;
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}
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u32 foreground_color;
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u32 background_color;
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u32 effective_background_color() const { return flags & Negative ? foreground_color : background_color; }
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u32 effective_foreground_color() const { return flags & Negative ? background_color : foreground_color; }
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String href;
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String href_id;
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enum Flags : u8 {
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NoAttributes = 0x00,
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Bold = 0x01,
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Italic = 0x02,
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Underline = 0x04,
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Negative = 0x08,
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Blink = 0x10,
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Touched = 0x20,
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};
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bool is_untouched() const { return !(flags & Touched); }
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// TODO: it would be really nice if we had a helper for enums that
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// exposed bit ops for class enums...
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u8 flags = Flags::NoAttributes;
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bool operator==(const Attribute& other) const
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{
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return foreground_color == other.foreground_color && background_color == other.background_color && flags == other.flags;
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}
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bool operator!=(const Attribute& other) const
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{
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return !(*this == other);
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}
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};
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class Line {
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AK_MAKE_NONCOPYABLE(Line);
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AK_MAKE_NONMOVABLE(Line);
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public:
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explicit Line(u16 columns);
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~Line();
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void clear(Attribute);
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bool has_only_one_background_color() const;
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void set_length(u16);
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u16 length() const { return m_length; }
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u32 code_point(size_t index) const
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{
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if (m_utf32)
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return m_code_points.as_u32[index];
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return m_code_points.as_u8[index];
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}
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void set_code_point(size_t index, u32 code_point)
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{
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if (!m_utf32 && code_point & 0xffffff80u)
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convert_to_utf32();
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if (m_utf32)
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m_code_points.as_u32[index] = code_point;
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else
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m_code_points.as_u8[index] = code_point;
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}
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bool is_dirty() const { return m_dirty; }
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void set_dirty(bool b) { m_dirty = b; }
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const Attribute* attributes() const { return m_attributes; }
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Attribute* attributes() { return m_attributes; }
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void convert_to_utf32();
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bool is_utf32() const { return m_utf32; }
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private:
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union {
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u8* as_u8;
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u32* as_u32;
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} m_code_points { nullptr };
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Attribute* m_attributes { nullptr };
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bool m_dirty { false };
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bool m_utf32 { false };
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u16 m_length { 0 };
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};
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}
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