mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-26 19:22:30 -05:00
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).
53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "ScreenLayout.h"
|
|
#include <AK/Error.h>
|
|
#include <AK/Span.h>
|
|
#include <LibGfx/Color.h>
|
|
#include <sys/ioctl_numbers.h>
|
|
|
|
namespace WindowServer {
|
|
|
|
// Handles low-level device interfacing for the screen.
|
|
// ScreenBackend is a thin transparent wrapper around framebuffer-related data which is responsible for setting up this data,
|
|
// tearing it down, changing its properties like size, and performing flushes.
|
|
// The screen is intended to directly access the members to perform its function, but it only ever reads from anything
|
|
// except the data in the framebuffer memory.
|
|
class ScreenBackend {
|
|
public:
|
|
virtual ~ScreenBackend() = default;
|
|
|
|
virtual ErrorOr<void> open() = 0;
|
|
|
|
virtual void set_head_buffer(int index) = 0;
|
|
|
|
virtual ErrorOr<void> flush_framebuffer_rects(int buffer_index, Span<FBRect const> rects) = 0;
|
|
|
|
virtual ErrorOr<void> unmap_framebuffer() = 0;
|
|
virtual ErrorOr<void> map_framebuffer() = 0;
|
|
|
|
virtual ErrorOr<void> flush_framebuffer() = 0;
|
|
|
|
virtual ErrorOr<void> set_head_mode_setting(GraphicsHeadModeSetting) = 0;
|
|
virtual ErrorOr<void> set_safe_head_mode_setting() = 0;
|
|
virtual ErrorOr<GraphicsHeadModeSetting> get_head_mode_setting() = 0;
|
|
|
|
bool m_can_device_flush_buffers { true };
|
|
bool m_can_device_flush_entire_framebuffer { true };
|
|
bool m_can_set_head_buffer { false };
|
|
|
|
Gfx::ARGB32* m_framebuffer { nullptr };
|
|
size_t m_size_in_bytes { 0 };
|
|
size_t m_max_size_in_bytes { 0 };
|
|
size_t m_back_buffer_offset { 0 };
|
|
|
|
int m_pitch { 0 };
|
|
};
|
|
|
|
}
|