1fe4406f37
b9e0ea0 Merge commit '7fa9d8bdea3773d1195b04d98fcf27cf48ddd81d' as 'tool/mbed/mbed-sdk' 7fa9d8b Squashed 'tool/mbed/mbed-sdk/' content from commit 7c21ce5 git-subtree-dir: tmk_core git-subtree-split: b9e0ea08cb940de20b3610ecdda18e9d8cd7c552
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
/* mbed TextDisplay Library Base Class
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* Copyright (c) 2007-2009 sford
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* Released under the MIT License: http://mbed.org/license/mit
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*
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* A common base class for Text displays
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* To port a new display, derive from this class and implement
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* the constructor (setup the display), character (put a character
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* at a location), rows and columns (number of rows/cols) functions.
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* Everything else (locate, printf, putc, cls) will come for free
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*
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* The model is the display will wrap at the right and bottom, so you can
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* keep writing and will always get valid characters. The location is
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* maintained internally to the class to make this easy
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*/
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#ifndef MBED_TEXTDISPLAY_H
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#define MBED_TEXTDISPLAY_H
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#include "mbed.h"
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class TextDisplay : public Stream {
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public:
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// functions needing implementation in derived implementation class
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TextDisplay(const char *name = NULL);
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virtual void character(int column, int row, int c) = 0;
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virtual int rows() = 0;
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virtual int columns() = 0;
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// functions that come for free, but can be overwritten
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virtual void cls();
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virtual void locate(int column, int row);
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virtual void foreground(int colour);
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virtual void background(int colour);
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// putc (from Stream)
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// printf (from Stream)
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protected:
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virtual int _putc(int value);
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virtual int _getc();
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// character location
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short _column;
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short _row;
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// colours
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int _foreground;
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int _background;
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};
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#endif
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