Subversion Repositories libOLED

Rev

Rev 13 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 13 Rev 17
Line 3... Line 3...
3 
#include <cstdint>
 3 
#include <cstdint>
4 
 
 4 
 
5 
class font_t
 5 
class font_t
6 
{
 6 
{
7 
public:
 7 
public:
- 
 
 8 
 
- 
 
 9 
 
8 
  /// \param height - pixel character height
 10 
  /// \param height - pixel character height
9 
  /// \param width  - pixel character width
 11 
  /// \param width  - pixel character width
10 
  /// \param spacing - character to character spacing
 12 
  /// \param spacing - character to character spacing
11 
  /// \param chars  - number of characters in character set
 13 
  /// \param chars  - number of characters in character set
12 
  /// \param data - constant data
 14 
  /// \param data - constant data
- 
 
 15 
  /// \param mult - coordinate multiplied by before sampling bitmap
- 
 
 16 
  /// \param shift- coordinate right shifted by after multiplication : mult=1, shift=1 means half sized
13 
  font_t(uint8_t const height, uint8_t const width,
 17 
  font_t(uint8_t const height, uint8_t const width,
14 
         uint8_t const spacing, uint8_t const chars,
 18 
         uint8_t const spacing, uint8_t const chars,
- 
 
 19 
         char const *data,
15 
         char const *data) : m_height(height), m_width(width), m_spacing(spacing), m_chars(chars), m_data(data)
 20 
         uint8_t const mult, uint8_t const shift)
- 
 
 21 
      : m_height(height),
- 
 
 22 
        m_width(width),
- 
 
 23 
        m_mapheight(PIXELS(height,mult,shift)),
- 
 
 24 
        m_mapwidth(PIXELS(width,mult,shift)),
- 
 
 25 
        m_spacing(PIXELS(spacing,mult,shift)),
- 
 
 26 
        m_chars(chars),
- 
 
 27 
        m_data(data),
- 
 
 28 
        m_mult(mult),
- 
 
 29 
        m_shift(shift),
- 
 
 30 
        m_round(ROUNDING(shift))
16 
  {
 31 
  {
17 
  }
 32 
  }
18 
 
 33 
 
19 
  virtual char
 34 
  virtual char
20 
  getPixel(char c, int x, int y) = 0;
 35 
  getPixel(char c, int x, int y) = 0;
21 
 
 36 
 
22 
  // character width
 37 
  // character width
23 
  uint8_t
 38 
  uint8_t
24 
  width()
 39 
  width()
25 
  {
 40 
  {
26 
    return m_width;
 41 
    return m_mapwidth;
27 
  }
 42 
  }
28 
 
 43 
 
29 
  // character height
 44 
  // character height
30 
  uint8_t
 45 
  uint8_t
31 
  height()
 46 
  height()
32 
  {
 47 
  {
33 
    return m_height;
 48 
    return m_mapheight;
34 
  }
 49 
  }
35 
 
 50 
 
36 
  uint8_t
 51 
  uint8_t
37 
  chars()
 52 
  chars()
38 
  {
 53 
  {
Line 43... Line 58...
43 
  spacing()
 58 
  spacing()
44 
  {
 59 
  {
45 
    return m_spacing;
 60 
    return m_spacing;
46 
  }
 61 
  }
47 
 
 62 
 
- 
 
 63 
private:
- 
 
 64 
 
- 
 
 65 
  /// @brief Convert from real bitmap dimension to virtual dimension given
- 
 
 66 
  /// @param dimension original dimension
- 
 
 67 
  /// @param mult  scale up multiplier
- 
 
 68 
  /// @param shift bit shift right after scaling
- 
 
 69 
  /// @return virtual dimension
- 
 
 70 
  static constexpr unsigned PIXELS(uint8_t dimension,uint8_t mult, uint8_t shift) { return (dimension << shift )/mult; };
- 
 
 71 
 
- 
 
 72 
  /// @brief Calculate a rounding value that is 0.5 << shift
- 
 
 73 
  /// @param val shift value
- 
 
 74 
  /// @return 0.5 << shift or 0
- 
 
 75 
  static constexpr uint8_t ROUNDING(uint8_t shift) { return (shift>0) ? (0) : 1<<(shift-1);};
- 
 
 76 
 
- 
 
 77 
 
48 
protected:
 78 
protected:
49 
  /// @brief Pixel height
 79 
  /// @brief Pixel height
50 
  uint8_t const m_height;
 80 
  uint8_t const m_height;
51 
  /// @brief Bitmap width
 81 
  /// @brief Bitmap width
52 
  uint8_t const m_width;
 82 
  uint8_t const m_width;
- 
 
 83 
 
- 
 
 84 
  /// @brief bitmap virtual height
- 
 
 85 
  uint8_t const m_mapheight;
- 
 
 86 
  /// @brief Bitmap virtual width  
- 
 
 87 
  uint8_t const m_mapwidth;
- 
 
 88 
 
53 
  /// @brief Spacing between characters
 89 
  /// @brief Spacing between characters
54 
  uint8_t const m_spacing;
 90 
  uint8_t const m_spacing;
55 
  /// @brief Number of characters in the character set bit map
 91 
  /// @brief Number of characters in the character set bit map
- 
 
 92 
 
- 
 
 93 
 
56 
  uint8_t const m_chars;
 94 
  uint8_t const m_chars;
57 
  char const *m_data;
 95 
  char const *m_data;
- 
 
 96 
 
- 
 
 97 
  unsigned char const m_mult;  //
- 
 
 98 
  unsigned char const m_shift; // bit shift after multiplication
- 
 
 99 
  unsigned char const m_round; // round up value 0.5 << shift
58 
};
 100 
};
59 
 
 101 
 
60 
class font5x7_t : public font_t
 102 
class font5x7_t : public font_t
61 
{
 103 
{
62 
public:
 104 
public:
63 
  // one byte of pixels per character row.
 105 
  // one byte of pixels per character row.
64 
  font5x7_t(unsigned char_count, char const *data) : font_t(7, 5, 6, char_count, data){};
 106 
  font5x7_t(unsigned char_count, char const *data) : font_t(7, 5, 6, char_count, data, 1, 0){};
65 
 
 107 
 
66 
  char
 108 
  char
67 
  getPixel(char c, int x, int y) override;
 109 
  getPixel(char c, int x, int y) override;
68 
};
 110 
};
69 
 
 111 
 
70 
class font10x18_t : public font_t
 112 
class font10x18_t : public font_t
71 
{
 113 
{
72 
public:
 114 
public:
73 
  // XBM format
 115 
 
- 
 
 116 
  // XBM format with optional multiply, right shift scaling of coordinates
74 
  font10x18_t(unsigned char_count, char const *data) : font_t(18, 10, 10, char_count, data){};
 117 
  font10x18_t(unsigned char_count, char const *data, unsigned char mult=1, unsigned char shift=0) : font_t(18,10,10, char_count, data, mult, shift){};
75 
 
 118 
 
76 
  char
 119 
  char
77 
  getPixel(char c, int x, int y) override;
 120 
  getPixel(char c, int x, int y) override;
78 
};
 121 
};
79 
 
 122 
 
Line 82... Line 125...
82 
extern font5x7_t small_font;
 125 
extern font5x7_t small_font;
83 
 
 126 
 
84 
// lucida font
 127 
// lucida font
85 
// in 10x18
 128 
// in 10x18
86 
extern font10x18_t large_font;
 129 
extern font10x18_t large_font;
- 
 
 130 
 
- 
 
 131 
// scaled down lucida font
- 
 
 132 
// in 5 x 9
- 
 
 133 
extern font10x18_t medium_font;
87 
 
 134