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7419569a2b
Previously, this was done by telling the client to put a space at each character in the range. This was inefficient, because a large number of function calls took place and incorrect, as the ANSI standard dictates that character attributes should be cleared as well. The newly added `clear_in_line` function solves this issue. It performs just one bounds check when it's called and can be implemented as a pretty tight loop.
70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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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 <AK/Vector.h>
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#include <LibVT/Color.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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static constexpr Color default_foreground_color = Color::named(Color::ANSIColor::DefaultForeground);
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static constexpr Color default_background_color = Color::named(Color::ANSIColor::DefaultBackground);
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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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#ifndef KERNEL
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href = {};
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href_id = {};
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#endif
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}
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Color foreground_color { default_foreground_color };
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Color background_color { default_background_color };
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constexpr Color effective_background_color() const { return flags & Negative ? foreground_color : background_color; }
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constexpr Color effective_foreground_color() const { return flags & Negative ? background_color : foreground_color; }
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#ifndef KERNEL
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String href;
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String href_id;
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#endif
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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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constexpr 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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constexpr 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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constexpr 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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}
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