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https://github.com/RGBCube/serenity
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cd8bcd06c6
We should not allocate a kernel region inside the constructor of the VGATextModeConsole class. We do use MUST() because allocation cannot fail at this point, but that happens in the static factory method instead.
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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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/RefCounted.h>
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#include <AK/Types.h>
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#include <Kernel/Graphics/Console/Console.h>
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#include <Kernel/Locking/Spinlock.h>
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namespace Kernel::Graphics {
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class VGATextModeConsole final : public Console {
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public:
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static NonnullRefPtr<VGATextModeConsole> initialize();
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virtual size_t chars_per_line() const override { return width(); };
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virtual bool has_hardware_cursor() const override { return true; }
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virtual bool is_hardware_paged_capable() const override { return true; }
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virtual size_t bytes_per_base_glyph() const override { return 2; }
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virtual void set_cursor(size_t x, size_t y) override;
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virtual void hide_cursor() override;
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virtual void show_cursor() override;
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virtual void clear(size_t x, size_t y, size_t length) override;
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virtual void write(size_t x, size_t y, char ch, bool critical = false) override;
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virtual void write(size_t x, size_t y, char ch, Color background, Color foreground, bool critical = false) override;
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virtual void write(char ch, bool critical = false) override;
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virtual void flush(size_t, size_t, size_t, size_t) override { }
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virtual void enable() override { }
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virtual void disable() override { }
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private:
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void clear_vga_row(u16 row);
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explicit VGATextModeConsole(NonnullOwnPtr<Memory::Region>);
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mutable Spinlock m_vga_lock;
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NonnullOwnPtr<Memory::Region> m_vga_window_region;
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VirtualAddress m_current_vga_window;
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};
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}
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