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Start working on virtual consoles/TTYs.

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This is a mess right now, but I'd rather commit as I go.
This commit is contained in:
Andreas Kling 2018-10-30 13:59:29 +01:00
parent bd2b5327d0
commit 68739dc43e
22 changed files with 611 additions and 344 deletions
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61
Kernel/VirtualConsole.h Normal file
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#pragma once
#include "TTY.h"
#include "Keyboard.h"
#include "Console.h"
class VirtualConsole final : public TTY, public KeyboardClient, public ConsoleImplementation {
public:
enum InitialContents { Cleared, AdoptCurrentVGABuffer };
VirtualConsole(unsigned index, InitialContents = Cleared);
virtual ~VirtualConsole() override;
void adoptCurrentVGABuffer();
void setActive(bool);
static void switchTo(unsigned);
static void initialize();
private:
// ^KeyboardClient
void onKeyPress(byte) override;
// ^ConsoleImplementation
void onConsoleReceive(byte) override;
void onChar(byte);
byte* m_buffer;
unsigned m_index;
bool m_active { false };
void escape$H(const Vector<unsigned>&);
void escape$J(const Vector<unsigned>&);
void escape$m(const Vector<unsigned>&);
void escape$s(const Vector<unsigned>&);
void escape$u(const Vector<unsigned>&);
const byte m_rows { 25 };
const byte m_columns { 80 };
byte m_cursorRow { 0 };
byte m_cursorColumn { 0 };
byte m_savedCursorRow { 0 };
byte m_savedCursorColumn { 0 };
byte m_currentAttribute { 0x07 };
void executeEscapeSequence(byte final);
enum EscapeState {
Normal,
ExpectBracket,
ExpectParameter,
ExpectIntermediate,
ExpectFinal,
};
EscapeState m_escState { Normal };
Vector<byte> m_parameters;
Vector<byte> m_intermediates;
};