AceSegment  0.3.0
An adjustable, configurable, and extensible framework for rendering seven segment LED displays.
CharWriter.h
1 /*
2 MIT License
3 
4 Copyright (c) 2018 Brian T. Park
5 
6 Permission is hereby granted, free of charge, to any person obtaining a copy
7 of this software and associated documentation files (the "Software"), to deal
8 in the Software without restriction, including without limitation the rights
9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 copies of the Software, and to permit persons to whom the Software is
11 furnished to do so, subject to the following conditions:
12 
13 The above copyright notice and this permission notice shall be included in all
14 copies or substantial portions of the Software.
15 
16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 SOFTWARE.
23 */
24 
25 #ifndef ACE_SEGMENT_CHAR_WRITER_H
26 #define ACE_SEGMENT_CHAR_WRITER_H
27 
28 #include <stdint.h>
29 #include "StyledPattern.h"
30 #include "Renderer.h"
31 
32 namespace ace_segment {
33 
38 class CharWriter {
39  public:
40  static const uint8_t kNumCharacters = 128;
41 
43  explicit CharWriter(Renderer* renderer):
44  mRenderer(renderer)
45  {}
46 
48  uint8_t getNumDigits() { return mRenderer->getNumDigits(); }
49 
51  void writeCharAt(uint8_t digit, char c);
52 
54  void writeCharAt(uint8_t digit, char c, uint8_t style);
55 
57  void writeStyleAt(uint8_t digit, uint8_t style) {
58  if (digit >= getNumDigits()) return;
59  mRenderer->writeStyleAt(digit, style);
60  }
61 
63  void writeDecimalPointAt(uint8_t digit, bool state = true) {
64  if (digit >= getNumDigits()) return;
65  mRenderer->writeDecimalPointAt(digit, state);
66  }
67 
68  private:
69  // Bit pattern map for ASCII characters.
70  static const uint8_t kCharacterArray[];
71 
72  // disable copy-constructor and assignment operator
73  CharWriter(const CharWriter&) = delete;
74  CharWriter& operator=(const CharWriter&) = delete;
75 
76  Renderer* const mRenderer;
77 };
78 
79 }
80 
81 #endif
void writeStyleAt(uint8_t digit, uint8_t style)
Write the style for a given digit, leaving pattern unchanged.
Definition: Renderer.cpp:76
uint8_t getNumDigits()
Get the number of digits.
Definition: CharWriter.h:48
CharWriter(Renderer *renderer)
Constructor.
Definition: CharWriter.h:43
A class that knows how to translate an array of led segement bit patterns with style attributes to a ...
Definition: Renderer.h:48
void writeDecimalPointAt(uint8_t digit, bool state=true)
Write the decimal point for the digit.
Definition: Renderer.cpp:89
void writeStyleAt(uint8_t digit, uint8_t style)
Write the style for a given digit, leaving character unchanged.
Definition: CharWriter.h:57
uint8_t getNumDigits()
Get the number of digits.
Definition: Renderer.h:86
The CharWriter supports mapping of ASCII (0 - 127) characters to segment patterns supported by Render...
Definition: CharWriter.h:38
void writeDecimalPointAt(uint8_t digit, bool state=true)
Write the decimal point at digit.
Definition: CharWriter.h:63
void writeCharAt(uint8_t digit, char c)
Write the character at the specified position.
Definition: CharWriter.cpp:188