mirror of
https://github.com/LadybirdBrowser/ladybird.git
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94ca55cefd
As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
118 lines
3.8 KiB
C++
118 lines
3.8 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 "Console.h"
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#include <Kernel/Devices/KeyboardDevice.h>
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#include <Kernel/TTY/TTY.h>
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class VirtualConsole final : public TTY
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, public KeyboardClient
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, public ConsoleImplementation {
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AK_MAKE_ETERNAL
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public:
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enum InitialContents {
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Cleared,
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AdoptCurrentVGABuffer
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};
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VirtualConsole(unsigned index, InitialContents = Cleared);
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virtual ~VirtualConsole() override;
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static void switch_to(unsigned);
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static void initialize();
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bool is_graphical() { return m_graphical; }
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void set_graphical(bool graphical) { m_graphical = graphical; }
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private:
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// ^KeyboardClient
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virtual void on_key_pressed(KeyboardDevice::Event) override;
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// ^ConsoleImplementation
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virtual void on_sysconsole_receive(u8) override;
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// ^TTY
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virtual ssize_t on_tty_write(const u8*, ssize_t) override;
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virtual StringView tty_name() const override;
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virtual void echo(u8) override;
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// ^CharacterDevice
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virtual const char* class_name() const override { return "VirtualConsole"; }
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void set_active(bool);
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void on_char(u8);
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void get_vga_cursor(u8& row, u8& column);
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void flush_vga_cursor();
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u8* m_buffer;
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unsigned m_index;
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bool m_active { false };
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bool m_graphical { false };
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void scroll_up();
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void set_cursor(unsigned row, unsigned column);
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void put_character_at(unsigned row, unsigned column, u8 ch);
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void escape$A(const Vector<unsigned>&);
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void escape$D(const Vector<unsigned>&);
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void escape$H(const Vector<unsigned>&);
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void escape$J(const Vector<unsigned>&);
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void escape$m(const Vector<unsigned>&);
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void escape$s(const Vector<unsigned>&);
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void escape$u(const Vector<unsigned>&);
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void clear();
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u8 m_cursor_row { 0 };
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u8 m_cursor_column { 0 };
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u8 m_saved_cursor_row { 0 };
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u8 m_saved_cursor_column { 0 };
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u8 m_current_attribute { 0x07 };
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void clear_vga_row(u16 row);
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void set_vga_start_row(u16 row);
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u16 m_vga_start_row { 0 };
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u16 m_current_vga_start_address { 0 };
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u8* m_current_vga_window { nullptr };
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void execute_escape_sequence(u8 final);
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enum EscapeState {
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Normal,
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ExpectBracket,
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ExpectParameter,
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ExpectIntermediate,
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ExpectFinal,
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};
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EscapeState m_escape_state { Normal };
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Vector<u8> m_parameters;
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Vector<u8> m_intermediates;
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u8* m_horizontal_tabs { nullptr };
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char m_tty_name[32];
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};
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