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https://github.com/RGBCube/serenity
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13e9947b4b
In case of possible framebuffer mapping overflow, just fallback to the safe mode-setting of the DisplayConnector, because in that state we know for sure that we can map a usable framebuffer (otherwise it is a bug in the Kernel, and not WindowServer).
48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
/*
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* Copyright (c) 2022, kleines Filmröllchen <filmroellchen@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 "ScreenBackend.h"
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#include "ScreenLayout.h"
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#include <AK/Error.h>
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#include <AK/Span.h>
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#include <AK/String.h>
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#include <sys/ioctl_numbers.h>
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namespace WindowServer {
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class VirtualScreenBackend : public ScreenBackend {
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public:
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virtual ~VirtualScreenBackend();
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VirtualScreenBackend() = default;
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private:
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friend class Screen;
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virtual ErrorOr<void> open() override;
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virtual void set_head_buffer(int index) override;
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virtual ErrorOr<void> flush_framebuffer_rects(int, Span<FBRect const>) override { return {}; }
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virtual ErrorOr<void> flush_framebuffer() override { return {}; }
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virtual ErrorOr<void> unmap_framebuffer() override;
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virtual ErrorOr<void> map_framebuffer() override;
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virtual ErrorOr<void> set_safe_head_mode_setting() override;
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virtual ErrorOr<void> set_head_mode_setting(GraphicsHeadModeSetting) override;
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virtual ErrorOr<GraphicsHeadModeSetting> get_head_mode_setting() override;
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int m_height { 0 };
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int m_width { 0 };
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bool m_first_buffer_active { true };
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};
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}
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