Bananymous
e8491b34b8
Userspace can freely set terminal size, kernel just updates it when for example new font is loaded. Also SIGWINCH is now sent by kernel instead of userspace.
107 lines
2.3 KiB
C++
107 lines
2.3 KiB
C++
#pragma once
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#include <BAN/Array.h>
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#include <kernel/Device/Device.h>
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#include <kernel/Terminal/TerminalDriver.h>
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#include <kernel/Terminal/TTY.h>
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#include <kernel/ThreadBlocker.h>
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namespace Kernel
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{
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class VirtualTTY : public TTY
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{
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public:
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using Palette = TerminalDriver::Palette;
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public:
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static BAN::ErrorOr<BAN::RefPtr<VirtualTTY>> create(BAN::RefPtr<TerminalDriver>);
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BAN::ErrorOr<void> set_font(LibFont::Font&&) override;
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void clear() override;
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protected:
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BAN::StringView name() const override { return m_name; }
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bool putchar_impl(uint8_t ch) override;
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bool can_write_impl() const override { return true; }
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void after_write() override;
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private:
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VirtualTTY(BAN::RefPtr<TerminalDriver>);
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void reset_ansi();
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void handle_ansi_csi(uint8_t ch);
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void handle_ansi_csi_color(uint8_t ch);
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void putcodepoint(uint32_t codepoint);
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void putchar_at(uint32_t codepoint, uint32_t x, uint32_t y);
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void render_from_buffer(uint32_t x, uint32_t y);
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void scroll_if_needed();
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private:
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enum class State
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{
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Normal,
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WaitingAnsiEscape,
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WaitingAnsiCSI,
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WaitingUTF8,
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};
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struct AnsiState
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{
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static constexpr size_t max_nums = 5;
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int32_t nums[max_nums] { -1, -1, -1, -1, -1 };
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size_t index { 0 };
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bool question { false };
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};
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BAN::Optional<TerminalDriver::Color> get_8bit_color();
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BAN::Optional<TerminalDriver::Color> get_24bit_color();
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struct UTF8State
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{
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uint32_t codepoint { 0 };
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uint8_t bytes_missing { 0 };
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};
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struct Cell
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{
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TerminalDriver::Color foreground;
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TerminalDriver::Color background;
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uint32_t codepoint { ' ' };
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};
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private:
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BAN::String m_name;
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BAN::RefPtr<TerminalDriver> m_terminal_driver;
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State m_state { State::Normal };
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AnsiState m_ansi_state { };
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UTF8State m_utf8_state { };
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uint32_t m_width { 0 };
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uint32_t m_height { 0 };
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uint32_t m_last_graphic_char { 0 };
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uint32_t m_saved_row { 0 };
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uint32_t m_saved_column { 0 };
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bool m_cursor_shown { true };
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uint32_t m_row { 0 };
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uint32_t m_column { 0 };
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Cell* m_buffer { nullptr };
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bool m_last_cursor_shown { false };
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uint32_t m_last_cursor_row { static_cast<uint32_t>(-1) };
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uint32_t m_last_cursor_column { static_cast<uint32_t>(-1) };
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const Palette& m_palette;
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TerminalDriver::Color m_foreground;
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TerminalDriver::Color m_background;
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bool m_colors_inverted { false };
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};
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}
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