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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4 | mjames | 1 | #include "libOLED/displayclass.H" |
| 2 | |||
| 10 | mjames | 3 | void display_t::printString(font_t &font, char const *string, uint16_t length, |
| 4 | colour_t colour) |
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| 4 | mjames | 5 | { |
| 7 | mjames | 6 | setPixelMode(colour); |
| 10 | mjames | 7 | uint16_t const xSpacing = font.width() + 1; |
| 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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| 4 | mjames | 12 | { |
| 10 | mjames | 13 | unsigned char c = string[xt]; |
| 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 | drawPixel(j + xs, ys, font.getPixel(c, j, yt)); |
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| 18 | } |
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| 4 | mjames | 19 | } |
| 10 | mjames | 20 | } |
| 4 | mjames | 21 | // move the cursor. |
| 22 | m_cursor_x += xSpacing * length; |
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| 23 | } |
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| 24 | |||
| 25 | // scale is multiplied by 256 |
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| 10 | mjames | 26 | void display_t::printScaledString(font_t &font, char const *string, |
| 27 | uint16_t length, uint16_t scale, |
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| 28 | colour_t colour) |
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| 4 | mjames | 29 | { |
| 10 | mjames | 30 | uint16_t xt, yt, jt, curr_x = 0; |
| 4 | mjames | 31 | uint16_t curr_y = m_cursor_y; |
| 32 | if (scale < 1) |
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| 33 | return; |
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| 7 | mjames | 34 | setPixelMode(colour); |
| 35 | |||
| 10 | mjames | 36 | for (yt = 0; yt < font.height() * 256; yt += scale) // iterate down scan lines |
| 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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| 4 | mjames | 42 | { |
| 10 | mjames | 43 | for (jt = 0; jt < (font.spacing()) * 256; jt += scale) |
| 44 | { |
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| 45 | unsigned char c = (string[xt]); |
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| 46 | drawPixel(curr_x, curr_y, font.getPixel(c, jt / 256, yt / 256)); |
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| 47 | curr_x++; |
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| 48 | } |
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| 4 | mjames | 49 | } |
| 10 | mjames | 50 | curr_y++; |
| 51 | } |
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| 52 | if (curr_x > width()) |
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| 53 | { |
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| 54 | curr_x = 0; |
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| 55 | } |
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| 4 | mjames | 56 | m_cursor_x = curr_x; |
| 57 | } |
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| 58 | |||
| 5 | mjames | 59 | uint8_t |
| 10 | mjames | 60 | display_t::formatNum(char *buff, uint8_t siz, uint8_t digits, uint8_t dp_pos, int val) |
| 5 | mjames | 61 | { |
| 10 | mjames | 62 | if (dp_pos != NO_DECIMAL) |
| 63 | digits++; |
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| 5 | mjames | 64 | uint8_t pos = digits; |
| 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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| 10 | mjames | 68 | { |
| 69 | sign = 1; |
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| 70 | val = -val; |
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| 71 | } |
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| 5 | mjames | 72 | |
| 73 | buff[pos] = 0; |
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| 74 | while (pos && pos < siz) |
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| 10 | mjames | 75 | { |
| 76 | if (pos == dp_loc) |
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| 5 | mjames | 77 | { |
| 10 | mjames | 78 | buff[--pos] = '.'; |
| 5 | mjames | 79 | } |
| 10 | mjames | 80 | else |
| 5 | mjames | 81 | { |
| 10 | mjames | 82 | buff[--pos] = val % 10 + '0'; |
| 83 | val /= 10; |
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| 84 | if (val == 0 && pos < dp_loc) |
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| 85 | break; |
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| 5 | mjames | 86 | } |
| 10 | mjames | 87 | } |
| 88 | if (sign) |
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| 89 | { |
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| 90 | buff[--pos] = '-'; |
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| 91 | } |
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| 5 | mjames | 92 | return digits; |
| 93 | } |
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| 94 | |||
| 10 | mjames | 95 | void display_t::fontDigits(font_t &font, uint8_t digits, uint8_t dp_pos, int val, colour_t colour) |
| 5 | mjames | 96 | { |
| 97 | char buff[10] = " "; |
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| 10 | mjames | 98 | uint8_t wid = formatNum(buff, sizeof(buff), digits, dp_pos, val); |
| 99 | printString(font, buff, wid, colour); |
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| 5 | mjames | 100 | } |
| 101 | |||
| 10 | mjames | 102 | int8_t display_t::fontSigDigits(font_t &font, uint8_t x, uint8_t y, bool right_justify, uint8_t dp_pos, |
| 103 | int val, colour_t colour) |
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| 5 | mjames | 104 | { |
| 105 | char digits; |
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| 10 | mjames | 106 | uint8_t width; |
| 5 | mjames | 107 | char sign = 0; |
| 108 | int uval; |
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| 109 | if (val < 0) |
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| 10 | mjames | 110 | { |
| 111 | uval = -val; |
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| 112 | sign = 1; // mark as negative |
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| 113 | } |
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| 5 | mjames | 114 | else |
| 10 | mjames | 115 | { |
| 116 | uval = val; |
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| 117 | } |
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| 5 | mjames | 118 | if (uval < 10) // always one digit for a sign or space, one for a digit |
| 10 | mjames | 119 | { |
| 120 | digits = 1; |
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| 121 | } |
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| 5 | mjames | 122 | if (uval >= 10 && uval < 100) |
| 10 | mjames | 123 | { |
| 124 | digits = 2; |
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| 125 | } |
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| 5 | mjames | 126 | if (uval >= 100 && uval < 1000) |
| 10 | mjames | 127 | { |
| 128 | digits = 3; |
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| 129 | } |
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| 5 | mjames | 130 | if (uval >= 1000) |
| 10 | mjames | 131 | { |
| 132 | digits = 4; |
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| 133 | } |
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| 5 | mjames | 134 | // backup for the - sign if right justified |
| 135 | if (right_justify) |
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| 10 | mjames | 136 | { |
| 137 | if (dp_pos != NO_DECIMAL) |
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| 5 | mjames | 138 | { |
| 10 | mjames | 139 | digits += 2; |
| 5 | mjames | 140 | } |
| 10 | mjames | 141 | else |
| 142 | { |
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| 143 | digits += 1; |
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| 144 | } |
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| 145 | width = digits; |
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| 146 | x -= digits * font.spacing(); |
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| 147 | } |
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| 148 | else |
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| 149 | { |
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| 150 | width = digits; |
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| 151 | if (dp_pos != NO_DECIMAL) |
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| 152 | ++width; |
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| 153 | if (sign) |
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| 154 | ++width; |
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| 155 | } |
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| 5 | mjames | 156 | |
| 10 | mjames | 157 | gotoxy(x, y); |
| 158 | fontDigits(font, digits, dp_pos, val, colour); |
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| 159 | // right justify always leaves space for sign |
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| 160 | return width; |
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| 5 | mjames | 161 | } |