Rev 10 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 11 | mjames | 1 | |
| 2 | #include <cstring> |
||
| 4 | mjames | 3 | #include "libOLED/displayclass.H" |
| 4 | |||
| 10 | mjames | 5 | void display_t::printString(font_t &font, char const *string, uint16_t length, |
| 6 | colour_t colour) |
||
| 4 | mjames | 7 | { |
| 7 | mjames | 8 | setPixelMode(colour); |
| 11 | mjames | 9 | if(length==0) |
| 10 | length=strlen(string); |
||
| 10 | mjames | 11 | uint16_t const xSpacing = font.width() + 1; |
| 12 | for (uint16_t yt = 0; yt < font.height(); yt++) // iterate down scan lines |
||
| 13 | { |
||
| 14 | uint16_t ys = m_cursor_y + yt; |
||
| 15 | for (uint16_t xt = 0; xt < length; xt++) |
||
| 4 | mjames | 16 | { |
| 10 | mjames | 17 | unsigned char c = string[xt]; |
| 18 | uint16_t xs = xt * xSpacing + m_cursor_x; |
||
| 19 | for (uint16_t j = 0; j < font.spacing(); j++) |
||
| 20 | { |
||
| 21 | drawPixel(j + xs, ys, font.getPixel(c, j, yt)); |
||
| 22 | } |
||
| 4 | mjames | 23 | } |
| 10 | mjames | 24 | } |
| 4 | mjames | 25 | // move the cursor. |
| 26 | m_cursor_x += xSpacing * length; |
||
| 27 | } |
||
| 28 | |||
| 29 | // scale is multiplied by 256 |
||
| 10 | mjames | 30 | void display_t::printScaledString(font_t &font, char const *string, |
| 31 | uint16_t length, uint16_t scale, |
||
| 32 | colour_t colour) |
||
| 4 | mjames | 33 | { |
| 10 | mjames | 34 | uint16_t xt, yt, jt, curr_x = 0; |
| 4 | mjames | 35 | uint16_t curr_y = m_cursor_y; |
| 36 | if (scale < 1) |
||
| 37 | return; |
||
| 7 | mjames | 38 | setPixelMode(colour); |
| 39 | |||
| 10 | mjames | 40 | for (yt = 0; yt < font.height() * 256; yt += scale) // iterate down scan lines |
| 41 | { |
||
| 42 | // iterate along the string |
||
| 43 | // local x plotting coordinate |
||
| 44 | curr_x = m_cursor_x; |
||
| 45 | for (xt = 0; xt < length; xt++) |
||
| 4 | mjames | 46 | { |
| 10 | mjames | 47 | for (jt = 0; jt < (font.spacing()) * 256; jt += scale) |
| 48 | { |
||
| 49 | unsigned char c = (string[xt]); |
||
| 50 | drawPixel(curr_x, curr_y, font.getPixel(c, jt / 256, yt / 256)); |
||
| 51 | curr_x++; |
||
| 52 | } |
||
| 4 | mjames | 53 | } |
| 10 | mjames | 54 | curr_y++; |
| 55 | } |
||
| 56 | if (curr_x > width()) |
||
| 57 | { |
||
| 58 | curr_x = 0; |
||
| 59 | } |
||
| 4 | mjames | 60 | m_cursor_x = curr_x; |
| 61 | } |
||
| 62 | |||
| 5 | mjames | 63 | uint8_t |
| 10 | mjames | 64 | display_t::formatNum(char *buff, uint8_t siz, uint8_t digits, uint8_t dp_pos, int val) |
| 5 | mjames | 65 | { |
| 10 | mjames | 66 | if (dp_pos != NO_DECIMAL) |
| 67 | digits++; |
||
| 5 | mjames | 68 | uint8_t pos = digits; |
| 69 | uint8_t dp_loc = pos - dp_pos; |
||
| 70 | uint8_t sign = 0; |
||
| 71 | if (val < 0) |
||
| 10 | mjames | 72 | { |
| 73 | sign = 1; |
||
| 74 | val = -val; |
||
| 75 | } |
||
| 5 | mjames | 76 | |
| 77 | buff[pos] = 0; |
||
| 78 | while (pos && pos < siz) |
||
| 10 | mjames | 79 | { |
| 80 | if (pos == dp_loc) |
||
| 5 | mjames | 81 | { |
| 10 | mjames | 82 | buff[--pos] = '.'; |
| 5 | mjames | 83 | } |
| 10 | mjames | 84 | else |
| 5 | mjames | 85 | { |
| 10 | mjames | 86 | buff[--pos] = val % 10 + '0'; |
| 87 | val /= 10; |
||
| 88 | if (val == 0 && pos < dp_loc) |
||
| 89 | break; |
||
| 5 | mjames | 90 | } |
| 10 | mjames | 91 | } |
| 92 | if (sign) |
||
| 93 | { |
||
| 94 | buff[--pos] = '-'; |
||
| 95 | } |
||
| 5 | mjames | 96 | return digits; |
| 97 | } |
||
| 98 | |||
| 10 | mjames | 99 | void display_t::fontDigits(font_t &font, uint8_t digits, uint8_t dp_pos, int val, colour_t colour) |
| 5 | mjames | 100 | { |
| 101 | char buff[10] = " "; |
||
| 10 | mjames | 102 | uint8_t wid = formatNum(buff, sizeof(buff), digits, dp_pos, val); |
| 103 | printString(font, buff, wid, colour); |
||
| 5 | mjames | 104 | } |
| 105 | |||
| 10 | mjames | 106 | int8_t display_t::fontSigDigits(font_t &font, uint8_t x, uint8_t y, bool right_justify, uint8_t dp_pos, |
| 107 | int val, colour_t colour) |
||
| 5 | mjames | 108 | { |
| 109 | char digits; |
||
| 10 | mjames | 110 | uint8_t width; |
| 5 | mjames | 111 | char sign = 0; |
| 112 | int uval; |
||
| 113 | if (val < 0) |
||
| 10 | mjames | 114 | { |
| 115 | uval = -val; |
||
| 116 | sign = 1; // mark as negative |
||
| 117 | } |
||
| 5 | mjames | 118 | else |
| 10 | mjames | 119 | { |
| 120 | uval = val; |
||
| 121 | } |
||
| 5 | mjames | 122 | if (uval < 10) // always one digit for a sign or space, one for a digit |
| 10 | mjames | 123 | { |
| 124 | digits = 1; |
||
| 125 | } |
||
| 5 | mjames | 126 | if (uval >= 10 && uval < 100) |
| 10 | mjames | 127 | { |
| 128 | digits = 2; |
||
| 129 | } |
||
| 5 | mjames | 130 | if (uval >= 100 && uval < 1000) |
| 10 | mjames | 131 | { |
| 132 | digits = 3; |
||
| 133 | } |
||
| 5 | mjames | 134 | if (uval >= 1000) |
| 10 | mjames | 135 | { |
| 136 | digits = 4; |
||
| 137 | } |
||
| 5 | mjames | 138 | // backup for the - sign if right justified |
| 139 | if (right_justify) |
||
| 10 | mjames | 140 | { |
| 141 | if (dp_pos != NO_DECIMAL) |
||
| 5 | mjames | 142 | { |
| 10 | mjames | 143 | digits += 2; |
| 5 | mjames | 144 | } |
| 10 | mjames | 145 | else |
| 146 | { |
||
| 147 | digits += 1; |
||
| 148 | } |
||
| 149 | width = digits; |
||
| 150 | x -= digits * font.spacing(); |
||
| 151 | } |
||
| 152 | else |
||
| 153 | { |
||
| 154 | width = digits; |
||
| 155 | if (dp_pos != NO_DECIMAL) |
||
| 156 | ++width; |
||
| 157 | if (sign) |
||
| 158 | ++width; |
||
| 159 | } |
||
| 5 | mjames | 160 | |
| 10 | mjames | 161 | gotoxy(x, y); |
| 162 | fontDigits(font, digits, dp_pos, val, colour); |
||
| 163 | // right justify always leaves space for sign |
||
| 164 | return width; |
||
| 5 | mjames | 165 | } |