mirror of
https://github.com/SerenityOS/serenity
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21d5f4ada1
This was supposed to be the foundation for some kind of pre-kernel environment, but nobody is working on it right now, so let's move everything back into the kernel and remove all the confusion.
123 lines
3.8 KiB
C++
123 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 <Kernel/Devices/KeyboardDevice.h>
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#include <Kernel/TTY/TTY.h>
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#include <Kernel/Console.h>
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namespace Kernel {
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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);
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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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}
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