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https://github.com/RGBCube/serenity
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87f8f892d8
If we tried to change the resolution before of this patch, we triggered a kernel crash due to mmaping the framebuffer device again. Therefore, on mmaping of the framebuffer device, we create an entire new set of VMObjects and Regions for the new settings. Then, when we change the resolution, the framebuffersconsole needs to be updated with the new resolution and also to be refreshed with the new settings. To ensure we handle both shrinking of the resolution and growth of it, we only copy the right amount of available data from the cells Region.
52 lines
1.9 KiB
C++
52 lines
1.9 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/PhysicalAddress.h>
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namespace Kernel::Graphics {
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class FramebufferConsole final : public Console {
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public:
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static NonnullRefPtr<FramebufferConsole> initialize(PhysicalAddress, size_t width, size_t height, size_t pitch);
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void set_resolution(size_t width, size_t height, size_t pitch);
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virtual size_t bytes_per_base_glyph() const override;
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virtual size_t chars_per_line() const override;
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virtual size_t max_column() const override { return m_width / 8; }
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virtual size_t max_row() const override { return m_height / 8; }
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virtual bool is_hardware_paged_capable() const override { return false; }
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virtual bool has_hardware_cursor() const override { return false; }
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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) const override;
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virtual void write(size_t x, size_t y, char ch, Color background, Color foreground) const override;
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virtual void write(size_t x, size_t y, String cstring, Color background, Color foreground) const override;
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virtual void write(size_t x, size_t y, char ch) const override;
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virtual void write(size_t x, size_t y, String) const override;
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virtual void write(char ch) const override;
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virtual void enable() override;
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virtual void disable() override;
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protected:
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void clear_glyph(size_t x, size_t y) const;
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FramebufferConsole(PhysicalAddress, size_t width, size_t height, size_t pitch);
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OwnPtr<Region> m_framebuffer_region;
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PhysicalAddress m_framebuffer_address;
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size_t m_pitch;
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mutable SpinLock<u8> m_lock;
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};
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}
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