Rev 2097 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 964 | jag | 1 | /* |
| 2 | * bit_display.cc |
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| 2302 | jag | 3 | * DIN Is Noise is copyright (c) 2006-2025 Jagannathan Sampath |
| 1713 | jag | 4 | * DIN Is Noise is released under GNU Public License 2.0 |
| 1479 | jag | 5 | * For more information, please visit https://dinisnoise.org/ |
| 964 | jag | 6 | */ |
| 7 | |||
| 8 | #include "bit_display.h" |
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| 9 | #include "dingl.h" |
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| 10 | |||
| 11 | bit_display::bit_display (int w, int h) { |
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| 12 | num_bits = 0; |
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| 13 | lsnr = 0; |
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| 14 | prev_id = -1; |
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| 15 | set_size (w, h); |
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| 16 | } |
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| 17 | |||
| 18 | void bit_display::set_size (int w, int h) { |
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| 19 | set_extents (extents.left, extents.bottom, extents.left + w, extents.bottom + h); |
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| 20 | set_pos (posx, posy); |
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| 21 | } |
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| 22 | |||
| 23 | void bit_display::set_pos (int x, int y) { |
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| 24 | widget::set_pos (x, y); |
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| 25 | calc_visual_params (); |
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| 26 | } |
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| 27 | |||
| 28 | void bit_display::set (void* bytes, int num_bytes) { // show bits of the given bytes |
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| 29 | num_bits = 8 * num_bytes; |
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| 30 | last_bit = num_bits - 1; |
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| 31 | bits.resize (num_bits); // init bit array |
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| 32 | unsigned char* pchar = (unsigned char *) bytes; // treat as character array |
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| 33 | for (int i = 0, k = 0; i < num_bytes; ++i) { // number of bytes = number of characters now |
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| 34 | unsigned char ci = pchar[i]; // ith character |
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| 35 | for (int j = 0; j < 8; ++j) { // extract bits of this character and store in bit array |
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| 36 | unsigned char tb = (ci & 0x80) >> 7; // extract left most bit |
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| 37 | bits[k++] = tb; |
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| 38 | ci = ci << 1; // left shift character by 1 bit |
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| 39 | } |
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| 40 | } |
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| 41 | calc_visual_params (); |
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| 42 | } |
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| 43 | |||
| 44 | void bit_display::calc_visual_params () { |
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| 45 | if (num_bits) { |
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| 46 | d_width = int (extents.width / num_bits); // display width for each bit |
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| 47 | int width = d_width * num_bits; // total width occupied by displayed bits |
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| 48 | xstart = extents.left; |
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| 49 | xend = xstart + width; |
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| 50 | } |
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| 51 | } |
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| 52 | |||
| 53 | extern int mousex, mouseyy; |
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| 54 | |||
| 55 | int bit_display::find_bit_id () { |
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| 56 | if (mousex < xstart) return 0; |
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| 57 | else if (mousex > xend) return last_bit; |
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| 58 | return (mousex - xstart) / d_width;; |
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| 59 | } |
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| 60 | |||
| 61 | int bit_display::handle_input () { |
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| 62 | int ret = widget::handle_input (); |
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| 63 | if (hover) { |
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| 64 | if (lmb) { |
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| 65 | cur_id = find_bit_id (); |
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| 66 | if (cur_id != prev_id) { |
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| 67 | prev_id = cur_id; |
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| 1654 | jag | 68 | bits[cur_id] = !bits[cur_id]; |
| 964 | jag | 69 | if (lsnr) lsnr->changed (*this); |
| 70 | } |
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| 71 | } else prev_id = -1; |
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| 72 | } |
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| 73 | return ret; |
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| 74 | } |
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| 75 | |||
| 76 | void bit_display::draw () { |
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| 77 | glColor3f (clr.r, clr.g, clr.b); |
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| 78 | glPolygonMode (GL_FRONT, GL_LINE); |
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| 79 | glRecti (xstart, extents.bottom, xend, extents.top); |
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| 80 | int xl = xstart, xr = xl; |
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| 81 | for (int i = 0; i < num_bits; ++i) { |
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| 82 | unsigned char bi = bits[i]; |
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| 83 | if (bi) glPolygonMode (GL_FRONT, GL_FILL); else glPolygonMode (GL_FRONT, GL_LINE); |
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| 84 | xr = xl + d_width; |
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| 85 | glRecti (xl, extents.bottom, xr, extents.top); |
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| 86 | xl = xr; |
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| 87 | } |
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| 88 | glPolygonMode (GL_FRONT, GL_FILL); |
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| 89 | } |
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| 90 | |||
| 91 | void bit_display::get_color (ucolor_t* uc) { |
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| 92 | unsigned char* pchar = (unsigned char*) uc; |
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| 93 | for (int i = 0, j = 0; i < 3; ++i) { |
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| 94 | unsigned char uci = 0; |
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| 95 | for (int k = 7; k > -1; --k) { |
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| 96 | unsigned char bj = bits[j++]; |
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| 97 | uci = uci | (bj << k); |
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| 98 | } |
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| 99 | pchar[i] = uci; |
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| 100 | } |
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| 101 | } |