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https://github.com/RGBCube/serenity
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34e9fa4d3b
Currently, Kernel::Graphics::FramebufferConsole is written assuming that the underlying framebuffer memory exists in physically contiguous memory. There are a bunch of framebuffer devices that would need to use the components of FramebufferConsole (in particular access to the kernel bitmap font rendering logic). To reduce code duplication, framebuffer console has been split into two parts, the abstract GenericFramebufferConsole class which does the rendering, and the ContiguousFramebufferConsole class which contains all logic related to managing the underling vm object. Also, a new flush method has been added to the class, to support devices that require an extra flush step to render.
48 lines
1.6 KiB
C++
48 lines
1.6 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/VGAConsole.h>
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#include <Kernel/SpinLock.h>
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namespace Kernel::Graphics {
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class TextModeConsole final : public VGAConsole {
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public:
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static NonnullRefPtr<TextModeConsole> initialize(const VGACompatibleAdapter& adapter);
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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 enable() override { }
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virtual void disable() override { VERIFY_NOT_REACHED(); }
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private:
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void clear_vga_row(u16 row);
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void set_vga_start_row(u16 row);
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explicit TextModeConsole(const VGACompatibleAdapter&);
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mutable SpinLock<u8> m_vga_lock;
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u16 m_vga_start_row { 0 };
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u16 m_current_vga_start_address { 0 };
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u8* m_current_vga_window { nullptr };
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u16 m_cursor_x { 0 };
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u16 m_cursor_y { 0 };
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};
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}
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