| 1 | /* |
| 2 | * (C) GraÅžvydas "notaz" Ignotas, 2011 |
| 3 | * |
| 4 | * This work is licensed under the terms of any of these licenses |
| 5 | * (at your option): |
| 6 | * - GNU GPL, version 2 or later. |
| 7 | * - GNU LGPL, version 2.1 or later. |
| 8 | * See the COPYING file in the top-level directory. |
| 9 | */ |
| 10 | |
| 11 | #include <stdio.h> |
| 12 | #include <tslib.h> |
| 13 | |
| 14 | #include "common/input.h" |
| 15 | #include "in_tsbutton.h" |
| 16 | |
| 17 | #define IN_TSBUTTON_PREFIX "tsbutton:" |
| 18 | #define IN_TSBUTTON_COUNT 4 |
| 19 | static int tsbutton_down_id; |
| 20 | static int last_tsbutton_id; |
| 21 | |
| 22 | #define TS_WIDTH 320 |
| 23 | #define TS_HEIGHT 240 |
| 24 | |
| 25 | // HACK: stealing this from plugin_lib |
| 26 | extern void *tsdev; |
| 27 | extern int (*pts_read)(struct tsdev *dev, struct ts_sample *sample, int nr); |
| 28 | extern int (*pts_fd)(struct tsdev *dev); |
| 29 | |
| 30 | static const char * const in_tsbutton_keys[IN_TSBUTTON_COUNT] = { |
| 31 | "TS1", "TS2", "TS3", "TS4", |
| 32 | }; |
| 33 | |
| 34 | static void in_tsbutton_probe(void) |
| 35 | { |
| 36 | struct tsdev *dev = tsdev; |
| 37 | if (dev == NULL) { |
| 38 | fprintf(stderr, "in_tsbutton_probe: missing tsdev\n"); |
| 39 | return; |
| 40 | } |
| 41 | |
| 42 | in_register(IN_TSBUTTON_PREFIX "touchscreen as buttons", |
| 43 | pts_fd(dev), NULL, IN_TSBUTTON_COUNT, in_tsbutton_keys, 0); |
| 44 | } |
| 45 | |
| 46 | static const char * const * |
| 47 | in_tsbutton_get_key_names(int *count) |
| 48 | { |
| 49 | *count = IN_TSBUTTON_COUNT; |
| 50 | return in_tsbutton_keys; |
| 51 | } |
| 52 | |
| 53 | static int update_button(void) |
| 54 | { |
| 55 | struct tsdev *dev = tsdev; |
| 56 | struct ts_sample sample; |
| 57 | int sx = 0, sy = 0, sp = 0, updated = 0; |
| 58 | |
| 59 | if (dev == NULL) |
| 60 | return -1; |
| 61 | |
| 62 | while (pts_read(dev, &sample, 1) > 0) { |
| 63 | sx = sample.x; |
| 64 | sy = sample.y; |
| 65 | sp = sample.pressure; |
| 66 | updated = 1; |
| 67 | } |
| 68 | |
| 69 | if (updated) { |
| 70 | if (sp == 0) |
| 71 | tsbutton_down_id = -1; |
| 72 | else { |
| 73 | // 0 1 |
| 74 | // 2 3 |
| 75 | tsbutton_down_id = 0; |
| 76 | if (sx > TS_WIDTH / 2) |
| 77 | tsbutton_down_id++; |
| 78 | if (sy > TS_HEIGHT / 2) |
| 79 | tsbutton_down_id += 2; |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | static int in_tsbutton_update(void *drv_data, const int *binds, int *result) |
| 87 | { |
| 88 | int ret, t; |
| 89 | |
| 90 | ret = update_button(); |
| 91 | if (ret != 0) |
| 92 | return ret; |
| 93 | |
| 94 | if (tsbutton_down_id >= 0) |
| 95 | for (t = 0; t < IN_BINDTYPE_COUNT; t++) |
| 96 | result[t] |= binds[IN_BIND_OFFS(tsbutton_down_id, t)]; |
| 97 | |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | static int in_tsbutton_update_keycode(void *data, int *is_down) |
| 102 | { |
| 103 | int ret, ret_kc = -1, ret_down = 0; |
| 104 | |
| 105 | ret = update_button(); |
| 106 | if (ret != 0) |
| 107 | return ret; |
| 108 | |
| 109 | if (tsbutton_down_id == last_tsbutton_id) |
| 110 | return -1; |
| 111 | |
| 112 | if (tsbutton_down_id >= 0) { |
| 113 | if (last_tsbutton_id >= 0) { |
| 114 | ret_kc = last_tsbutton_id; |
| 115 | last_tsbutton_id = -1; |
| 116 | } |
| 117 | else { |
| 118 | ret_down = 1; |
| 119 | ret_kc = tsbutton_down_id; |
| 120 | last_tsbutton_id = tsbutton_down_id; |
| 121 | } |
| 122 | } |
| 123 | else { |
| 124 | ret_kc = last_tsbutton_id; |
| 125 | last_tsbutton_id = -1; |
| 126 | } |
| 127 | |
| 128 | if (is_down != NULL) |
| 129 | *is_down = ret_down; |
| 130 | |
| 131 | return ret_kc; |
| 132 | } |
| 133 | |
| 134 | static const in_drv_t in_tsbutton_drv = { |
| 135 | .prefix = IN_TSBUTTON_PREFIX, |
| 136 | .probe = in_tsbutton_probe, |
| 137 | .get_key_names = in_tsbutton_get_key_names, |
| 138 | .update = in_tsbutton_update, |
| 139 | .update_keycode = in_tsbutton_update_keycode, |
| 140 | }; |
| 141 | |
| 142 | void in_tsbutton_init(void) |
| 143 | { |
| 144 | tsbutton_down_id = last_tsbutton_id = -1; |
| 145 | in_register_driver(&in_tsbutton_drv); |
| 146 | } |
| 147 | |