Martin Woolley / microbit-dal-x

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Dependencies:   BLE_API mbed-dev-bin nRF51822

Fork of microbit-dal by Lancaster University

inc/core/MicroBitFont.h@74:6e04fcba715d, 2017-06-06 (annotated)

Committer:
bluetooth_mdw
Date:
Tue Jun 06 08:41:02 2017 +0000
Revision:
74:6e04fcba715d
Parent:
1:8aa5cdb4ab67 
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jonathan Austin 1:8aa5cdb4ab67 1 /*
Jonathan Austin 1:8aa5cdb4ab67 2 The MIT License (MIT)
Jonathan Austin 1:8aa5cdb4ab67 3
Jonathan Austin 1:8aa5cdb4ab67 4 Copyright (c) 2016 British Broadcasting Corporation.
Jonathan Austin 1:8aa5cdb4ab67 5 This software is provided by Lancaster University by arrangement with the BBC.
Jonathan Austin 1:8aa5cdb4ab67 6
Jonathan Austin 1:8aa5cdb4ab67 7 Permission is hereby granted, free of charge, to any person obtaining a
Jonathan Austin 1:8aa5cdb4ab67 8 copy of this software and associated documentation files (the "Software"),
Jonathan Austin 1:8aa5cdb4ab67 9 to deal in the Software without restriction, including without limitation
Jonathan Austin 1:8aa5cdb4ab67 10 the rights to use, copy, modify, merge, publish, distribute, sublicense,
Jonathan Austin 1:8aa5cdb4ab67 11 and/or sell copies of the Software, and to permit persons to whom the
Jonathan Austin 1:8aa5cdb4ab67 12 Software is furnished to do so, subject to the following conditions:
Jonathan Austin 1:8aa5cdb4ab67 13
Jonathan Austin 1:8aa5cdb4ab67 14 The above copyright notice and this permission notice shall be included in
Jonathan Austin 1:8aa5cdb4ab67 15 all copies or substantial portions of the Software.
Jonathan Austin 1:8aa5cdb4ab67 16
Jonathan Austin 1:8aa5cdb4ab67 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Jonathan Austin 1:8aa5cdb4ab67 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Jonathan Austin 1:8aa5cdb4ab67 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
Jonathan Austin 1:8aa5cdb4ab67 20 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Jonathan Austin 1:8aa5cdb4ab67 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
Jonathan Austin 1:8aa5cdb4ab67 22 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
Jonathan Austin 1:8aa5cdb4ab67 23 DEALINGS IN THE SOFTWARE.
Jonathan Austin 1:8aa5cdb4ab67 24 */
Jonathan Austin 1:8aa5cdb4ab67 25
Jonathan Austin 1:8aa5cdb4ab67 26 #ifndef MICROBIT_FONT_H
Jonathan Austin 1:8aa5cdb4ab67 27 #define MICROBIT_FONT_H
Jonathan Austin 1:8aa5cdb4ab67 28
Jonathan Austin 1:8aa5cdb4ab67 29 #include "mbed.h"
Jonathan Austin 1:8aa5cdb4ab67 30 #include "MicroBitConfig.h"
Jonathan Austin 1:8aa5cdb4ab67 31
Jonathan Austin 1:8aa5cdb4ab67 32 #define MICROBIT_FONT_WIDTH 5
Jonathan Austin 1:8aa5cdb4ab67 33 #define MICROBIT_FONT_HEIGHT 5
Jonathan Austin 1:8aa5cdb4ab67 34 #define MICROBIT_FONT_ASCII_START 32
Jonathan Austin 1:8aa5cdb4ab67 35 #define MICROBIT_FONT_ASCII_END 126
Jonathan Austin 1:8aa5cdb4ab67 36
Jonathan Austin 1:8aa5cdb4ab67 37 /**
Jonathan Austin 1:8aa5cdb4ab67 38 * Class definition for a MicrobitFont
Jonathan Austin 1:8aa5cdb4ab67 39 * This class represents a font that can be used by the display to render text.
Jonathan Austin 1:8aa5cdb4ab67 40 *
Jonathan Austin 1:8aa5cdb4ab67 41 * A MicroBitFont is 5x5.
Jonathan Austin 1:8aa5cdb4ab67 42 * Each Row is represented by a byte in the array.
Jonathan Austin 1:8aa5cdb4ab67 43 *
Jonathan Austin 1:8aa5cdb4ab67 44 * Row Format:
Jonathan Austin 1:8aa5cdb4ab67 45 * ================================================================
Jonathan Austin 1:8aa5cdb4ab67 46 * | Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 |
Jonathan Austin 1:8aa5cdb4ab67 47 * ================================================================
Jonathan Austin 1:8aa5cdb4ab67 48 * | N/A | N/A | N/A | Col 1 | Col 2 | Col 3 | Col 4 | Col 5 |
Jonathan Austin 1:8aa5cdb4ab67 49 * | 0x80 | 0x40 | 0x20 | 0x10 | 0x08 | 0x04 | 0x02 | 0x01 |
Jonathan Austin 1:8aa5cdb4ab67 50 *
Jonathan Austin 1:8aa5cdb4ab67 51 * Example: { 0x08, 0x08, 0x08, 0x0, 0x08 }
Jonathan Austin 1:8aa5cdb4ab67 52 *
Jonathan Austin 1:8aa5cdb4ab67 53 * The above will produce an exclaimation mark on the second column in form the left.
Jonathan Austin 1:8aa5cdb4ab67 54 *
Jonathan Austin 1:8aa5cdb4ab67 55 * We could compress further, but the complexity of decode would likely outweigh the gains.
Jonathan Austin 1:8aa5cdb4ab67 56 */
Jonathan Austin 1:8aa5cdb4ab67 57 class MicroBitFont
Jonathan Austin 1:8aa5cdb4ab67 58 {
Jonathan Austin 1:8aa5cdb4ab67 59 public:
Jonathan Austin 1:8aa5cdb4ab67 60
Jonathan Austin 1:8aa5cdb4ab67 61 static const unsigned char* defaultFont;
Jonathan Austin 1:8aa5cdb4ab67 62 static MicroBitFont systemFont;
Jonathan Austin 1:8aa5cdb4ab67 63
Jonathan Austin 1:8aa5cdb4ab67 64 const unsigned char* characters;
Jonathan Austin 1:8aa5cdb4ab67 65
Jonathan Austin 1:8aa5cdb4ab67 66 int asciiEnd;
Jonathan Austin 1:8aa5cdb4ab67 67
Jonathan Austin 1:8aa5cdb4ab67 68 /**
Jonathan Austin 1:8aa5cdb4ab67 69 * Constructor.
Jonathan Austin 1:8aa5cdb4ab67 70 *
Jonathan Austin 1:8aa5cdb4ab67 71 * Sets the font represented by this font object.
Jonathan Austin 1:8aa5cdb4ab67 72 *
Jonathan Austin 1:8aa5cdb4ab67 73 * @param font A pointer to the beginning of the new font.
Jonathan Austin 1:8aa5cdb4ab67 74 *
Jonathan Austin 1:8aa5cdb4ab67 75 * @param asciiEnd the char value at which this font finishes.
Jonathan Austin 1:8aa5cdb4ab67 76 */
Jonathan Austin 1:8aa5cdb4ab67 77 MicroBitFont(const unsigned char* font, int asciiEnd = MICROBIT_FONT_ASCII_END);
Jonathan Austin 1:8aa5cdb4ab67 78
Jonathan Austin 1:8aa5cdb4ab67 79 /**
Jonathan Austin 1:8aa5cdb4ab67 80 * Default Constructor.
Jonathan Austin 1:8aa5cdb4ab67 81 *
Jonathan Austin 1:8aa5cdb4ab67 82 * Configures the default font for the display to use.
Jonathan Austin 1:8aa5cdb4ab67 83 */
Jonathan Austin 1:8aa5cdb4ab67 84 MicroBitFont();
Jonathan Austin 1:8aa5cdb4ab67 85
Jonathan Austin 1:8aa5cdb4ab67 86 /**
Jonathan Austin 1:8aa5cdb4ab67 87 * Modifies the current system font to the given instance of MicroBitFont.
Jonathan Austin 1:8aa5cdb4ab67 88 *
Jonathan Austin 1:8aa5cdb4ab67 89 * @param font the new font that will be used to render characters on the display.
Jonathan Austin 1:8aa5cdb4ab67 90 */
Jonathan Austin 1:8aa5cdb4ab67 91 static void setSystemFont(MicroBitFont font);
Jonathan Austin 1:8aa5cdb4ab67 92
Jonathan Austin 1:8aa5cdb4ab67 93 /**
Jonathan Austin 1:8aa5cdb4ab67 94 * Retreives the font object used for rendering characters on the display.
Jonathan Austin 1:8aa5cdb4ab67 95 */
Jonathan Austin 1:8aa5cdb4ab67 96 static MicroBitFont getSystemFont();
Jonathan Austin 1:8aa5cdb4ab67 97
Jonathan Austin 1:8aa5cdb4ab67 98 };
Jonathan Austin 1:8aa5cdb4ab67 99
Jonathan Austin 1:8aa5cdb4ab67 100 #endif