ef53864d36
This prevents a race condition where the console may still be rendering, but the process may be able to get data on the screen faster, which results in visual corruption as the two race.
77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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textterminal.h
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An indexable text buffer with the VGA text mode framebuffer as backend.
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*******************************************************************************/
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#ifndef SORTIX_TEXTTERMINAL_H
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#define SORTIX_TEXTTERMINAL_H
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#include <sortix/kernel/kthread.h>
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#include <sortix/kernel/refcount.h>
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namespace Sortix {
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class TextBufferHandle;
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class TextTerminal //: public Printable ?
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{
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public:
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TextTerminal(Ref<TextBufferHandle> textbufhandle);
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~TextTerminal();
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size_t Print(const char* string, size_t stringlen);
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size_t Width() const;
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size_t Height() const;
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bool Sync();
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private:
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void PutChar(TextBuffer* textbuf, char c);
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void UpdateCursor(TextBuffer* textbuf);
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void Newline(TextBuffer* textbuf);
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void Backspace(TextBuffer* textbuf);
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void Tab(TextBuffer* textbuf);
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void PutAnsiEscaped(TextBuffer* textbuf, char c);
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void RunAnsiCommand(TextBuffer* textbuf, char c);
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void AnsiReset();
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void Reset();
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private:
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mutable Ref<TextBufferHandle> textbufhandle;
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mutable kthread_mutex_t termlock;
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uint8_t vgacolor;
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unsigned column;
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unsigned line;
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unsigned ansisavedposx;
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unsigned ansisavedposy;
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enum { NONE = 0, CSI, COMMAND, } ansimode;
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static const size_t ANSI_NUM_PARAMS = 16;
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unsigned ansiusedparams;
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unsigned ansiparams[ANSI_NUM_PARAMS];
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unsigned currentparamindex;
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bool paramundefined;
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bool ignoresequence;
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};
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} // namespace Sortix
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#endif
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