jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#pragma once
8
9#include <AK/Types.h>
10#include <Kernel/Graphics/Console/Console.h>
11#include <Kernel/Locking/Spinlock.h>
12
13namespace Kernel::Graphics {
14class VGATextModeConsole final : public Console {
15public:
16 static NonnullLockRefPtr<VGATextModeConsole> initialize();
17 virtual size_t chars_per_line() const override { return width(); };
18
19 virtual bool has_hardware_cursor() const override { return true; }
20 virtual bool is_hardware_paged_capable() const override { return true; }
21
22 virtual size_t bytes_per_base_glyph() const override { return 2; }
23 virtual void set_cursor(size_t x, size_t y) override;
24 virtual void clear(size_t x, size_t y, size_t length) override;
25 virtual void write(size_t x, size_t y, char ch, bool critical = false) override;
26 virtual void write(size_t x, size_t y, char ch, Color background, Color foreground, bool critical = false) override;
27 virtual void write(char ch, bool critical = false) override;
28 virtual void flush(size_t, size_t, size_t, size_t) override { }
29
30 virtual void enable() override { }
31 virtual void disable() override { }
32
33private:
34 virtual void hide_cursor() override;
35 virtual void show_cursor() override;
36
37 void clear_vga_row(u16 row);
38
39 explicit VGATextModeConsole(NonnullOwnPtr<Memory::Region>);
40
41 mutable Spinlock<LockRank::None> m_vga_lock {};
42
43 NonnullOwnPtr<Memory::Region> m_vga_window_region;
44 VirtualAddress m_current_vga_window;
45};
46
47}