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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4 | mjames | 1 | #include "libOLED/displayclass.H" |
| 2 | |||
| 3 | void |
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| 4 | display_t::printString (font_t &font, char const *string, uint16_t length, |
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| 5 | colour_t colour) |
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| 6 | { |
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| 7 | uint16_t const xSpacing = font.width () + 1; |
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| 8 | for (uint16_t yt = 0; yt < font.height (); yt++) // iterate down scan lines |
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| 9 | { |
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| 10 | uint16_t ys = m_cursor_y + yt; |
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| 11 | for (uint16_t xt = 0; xt < length; xt++) |
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| 12 | { |
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| 13 | unsigned char c = string[xt]; |
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| 14 | uint16_t xs = xt * xSpacing + m_cursor_x; |
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| 15 | for (uint16_t j = 0; j < font.spacing (); j++) |
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| 16 | { |
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| 17 | if (font.getPixel (c, j, yt) != 0) |
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| 18 | drawPixel (j + xs, ys, colour); |
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| 19 | } |
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| 20 | } |
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| 21 | } |
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| 22 | // move the cursor. |
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| 23 | m_cursor_x += xSpacing * length; |
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| 24 | } |
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| 25 | |||
| 26 | // scale is multiplied by 256 |
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| 27 | void |
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| 28 | display_t::printScaledString (font_t &font, char const *string, |
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| 29 | uint16_t length, uint16_t scale, |
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| 30 | colour_t colour) |
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| 31 | { |
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| 32 | uint16_t xt, yt, jt, curr_x=0; |
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| 33 | uint16_t curr_y = m_cursor_y; |
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| 34 | if (scale < 1) |
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| 35 | return; |
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| 36 | for (yt = 0; yt < font.height () * 256; yt += scale) // iterate down scan lines |
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| 37 | { |
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| 38 | // iterate along the string |
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| 39 | // local x plotting coordinate |
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| 40 | curr_x = m_cursor_x; |
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| 41 | for (xt = 0; xt < length; xt++) |
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| 42 | { |
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| 43 | for (jt = 0; jt < (font.spacing ()) * 256; jt += scale) |
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| 44 | { |
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| 45 | unsigned char c = (string[xt]); |
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| 46 | if (font.getPixel (c, jt / 256, yt / 256)) |
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| 47 | drawPixel (curr_x, curr_y, colour); |
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| 48 | curr_x++; |
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| 49 | } |
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| 50 | } |
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| 51 | curr_y++; |
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| 52 | } |
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| 53 | if (curr_x > width ()) |
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| 54 | { |
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| 55 | curr_x = 0; |
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| 56 | } |
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| 57 | m_cursor_x = curr_x; |
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| 58 | } |
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| 59 | |||
| 5 | mjames | 60 | uint8_t |
| 61 | display_t::formatNum (char *buff, uint8_t siz, uint8_t digits, uint8_t dp_pos, int val) |
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| 62 | { |
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| 63 | digits++; |
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| 64 | uint8_t pos = digits; |
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| 65 | uint8_t dp_loc = pos - dp_pos; |
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| 66 | uint8_t sign = 0; |
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| 67 | if (val < 0) |
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| 68 | { |
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| 69 | sign = 1; |
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| 70 | val = -val; |
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| 71 | } |
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| 72 | |||
| 73 | buff[pos] = 0; |
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| 74 | while (pos && pos < siz) |
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| 75 | { |
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| 76 | if (pos == dp_loc) |
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| 77 | { |
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| 78 | buff[--pos] = '.'; |
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| 79 | } |
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| 80 | else |
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| 81 | { |
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| 82 | buff[--pos] = val % 10 + '0'; |
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| 83 | val /= 10; |
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| 84 | if (val == 0 && pos < dp_loc) |
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| 85 | break; |
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| 86 | } |
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| 87 | } |
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| 88 | if (sign) |
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| 89 | { |
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| 90 | buff[--pos] = '-'; |
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| 91 | } |
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| 92 | return digits; |
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| 93 | } |
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| 94 | |||
| 95 | void |
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| 96 | display_t::fontDigits (font_t &font, uint8_t digits, uint8_t dp_pos, int val) |
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| 97 | { |
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| 98 | char buff[10] = " "; |
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| 99 | uint8_t wid = formatNum (buff, sizeof(buff), digits, dp_pos, val); |
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| 100 | printString (font, buff, wid, WHITE ); |
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| 101 | } |
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| 102 | |||
| 103 | void |
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| 104 | display_t::fontSigDigits (font_t &font,uint8_t x, uint8_t y, bool right_justify, uint8_t dp_pos, |
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| 105 | int val) |
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| 106 | { |
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| 107 | char digits; |
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| 108 | char sign = 0; |
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| 109 | int uval; |
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| 110 | if (val < 0) |
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| 111 | { |
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| 112 | uval = -val; |
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| 113 | sign = 1; // mark as negative |
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| 114 | } |
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| 115 | else |
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| 116 | { |
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| 117 | uval = val; |
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| 118 | } |
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| 119 | if (uval < 10) // always one digit for a sign or space, one for a digit |
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| 120 | { |
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| 121 | digits = 1; |
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| 122 | } |
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| 123 | if (uval >= 10 && uval < 100) |
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| 124 | { |
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| 125 | digits = 2; |
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| 126 | } |
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| 127 | if (uval >= 100 && uval < 1000) |
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| 128 | { |
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| 129 | digits = 3; |
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| 130 | } |
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| 131 | if (uval >= 1000) |
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| 132 | { |
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| 133 | digits = 4; |
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| 134 | } |
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| 135 | // backup for the - sign if right justified |
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| 136 | if (right_justify) |
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| 137 | { |
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| 138 | if (dp_pos < 10) |
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| 139 | { |
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| 140 | digits += 2; |
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| 141 | } |
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| 142 | else |
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| 143 | { |
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| 144 | digits += 1; |
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| 145 | } |
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| 146 | x -= digits * font.spacing(); |
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| 147 | } |
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| 148 | |||
| 149 | gotoxy (x, y); |
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| 150 | fontDigits (font, digits, dp_pos, val); |
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| 151 | } |
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| 152 | |||
| 153 |