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sortix--sortix/kernel/vgatextbuffer.h

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Relicense Sortix to the ISC license. I hereby relicense all my work on Sortix under the ISC license as below. All Sortix contributions by other people are already under this license, are not substantial enough to be copyrightable, or have been removed. All imported code from other projects is compatible with this license. All GPL licensed code from other projects had previously been removed. Copyright 2011-2016 Jonas 'Sortie' Termansen and contributors. Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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/*
* Copyright (c) 2012, 2013, 2014, 2015 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* vgatextbuffer.h
* An indexable text buffer with the VGA text mode framebuffer as backend.
*/
The console can now be rendered to any text buffer. The console renderer now renders to a text buffer, which can be implemented on any device, whether it's the VGA text buffer or a bitmap graphics device with font rendering. This replaces the older code that could only render to a VGA framebuffer and where the input parsing was tightly coupled with the device rendering phase.
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#ifndef SORTIX_VGATEXTBUFFER_H
#define SORTIX_VGATEXTBUFFER_H
#include <sortix/kernel/textbuffer.h>
namespace Sortix {
class VGATextBuffer : public TextBuffer
{
public:
Add console backspace bold and underline support. Combine textbuffer char and attr concepts while here.
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VGATextBuffer(uint16_t* vga, TextChar* chars, size_t width, size_t height);
The console can now be rendered to any text buffer. The console renderer now renders to a text buffer, which can be implemented on any device, whether it's the VGA text buffer or a bitmap graphics device with font rendering. This replaces the older code that could only render to a VGA framebuffer and where the input parsing was tightly coupled with the device rendering phase.
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virtual ~VGATextBuffer();
virtual size_t Width() const;
virtual size_t Height() const;
virtual TextChar GetChar(TextPos pos) const;
virtual void SetChar(TextPos pos, TextChar c);
virtual void Scroll(ssize_t off, TextChar fillwith);
virtual void Move(TextPos to, TextPos from, size_t numchars);
Add console backspace bold and underline support. Combine textbuffer char and attr concepts while here.
2015-10-04 12:55:06 -04:00
virtual void Fill(TextPos from, TextPos to, TextChar fillwith);
The console can now be rendered to any text buffer. The console renderer now renders to a text buffer, which can be implemented on any device, whether it's the VGA text buffer or a bitmap graphics device with font rendering. This replaces the older code that could only render to a VGA framebuffer and where the input parsing was tightly coupled with the device rendering phase.
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virtual bool GetCursorEnabled() const;
virtual void SetCursorEnabled(bool enablecursor);
virtual TextPos GetCursorPos() const;
virtual void SetCursorPos(TextPos cursorpos);
Allow bootloader bitmap framebuffer modesetting.
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virtual void SpawnThreads();
Schedule full console redraw after user-space framebuffer write.
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virtual void Invalidate();
Recover kernel log during emergencies.
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virtual bool EmergencyIsImpaired();
virtual bool EmergencyRecoup();
virtual void EmergencyReset();
The console can now be rendered to any text buffer. The console renderer now renders to a text buffer, which can be implemented on any device, whether it's the VGA text buffer or a bitmap graphics device with font rendering. This replaces the older code that could only render to a VGA framebuffer and where the input parsing was tightly coupled with the device rendering phase.
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private:
bool UsablePosition(TextPos pos) const;
TextPos CropPosition(TextPos pos) const;
size_t OffsetOfPos(TextPos pos) const;
void UpdateCursor();
private:
uint16_t* vga;
Add unicode support to kernel terminal and console.
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TextChar* chars;
The console can now be rendered to any text buffer. The console renderer now renders to a text buffer, which can be implemented on any device, whether it's the VGA text buffer or a bitmap graphics device with font rendering. This replaces the older code that could only render to a VGA framebuffer and where the input parsing was tightly coupled with the device rendering phase.
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size_t width;
size_t height;
TextPos cursorpos;
bool cursorenabled;
};
} // namespace Sortix
#endif
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