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20743e8aed
As we removed the support of VBE modesetting that was done by GRUB early on boot, we need to determine if we can modeset the resolution with our drivers, and if not, we should enable text mode and ensure that SystemServer knows about it too. Also, SystemServer should first check if there's a framebuffer device node, which is an indication that text mode was not even if it was requested. Then, if it doesn't find it, it should check what boot_mode argument the user specified (in case it's self-test). This way if we try to use bochs-display device (which is not VGA compatible) and request a text mode, it will not honor the request and will continue with graphical mode. Also try to print critical messages with mininum memory allocations possible. In LibVT, We make the implementation flexible for kernel-specific methods that are implemented in ConsoleImpl class.
60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Noncopyable.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <LibVT/Attribute.h>
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#include <LibVT/XtermColors.h>
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namespace VT {
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class Line {
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AK_MAKE_NONCOPYABLE(Line);
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AK_MAKE_NONMOVABLE(Line);
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public:
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explicit Line(size_t length);
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~Line();
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struct Cell {
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u32 code_point { ' ' };
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Attribute attribute;
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};
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const Attribute& attribute_at(size_t index) const { return m_cells[index].attribute; }
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Attribute& attribute_at(size_t index) { return m_cells[index].attribute; }
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Cell& cell_at(size_t index) { return m_cells[index]; }
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const Cell& cell_at(size_t index) const { return m_cells[index]; }
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void clear(const Attribute&);
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bool has_only_one_background_color() const;
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size_t length() const { return m_cells.size(); }
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void set_length(size_t);
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u32 code_point(size_t index) const
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{
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return m_cells[index].code_point;
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}
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void set_code_point(size_t index, u32 code_point)
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{
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m_cells[index].code_point = code_point;
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}
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bool is_dirty() const { return m_dirty; }
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void set_dirty(bool b) { m_dirty = b; }
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private:
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Vector<Cell> m_cells;
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bool m_dirty { false };
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};
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}
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