diff options
Diffstat (limited to 'frontend/in_tsbutton.c')
| -rw-r--r-- | frontend/in_tsbutton.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/frontend/in_tsbutton.c b/frontend/in_tsbutton.c new file mode 100644 index 0000000..4e2cef0 --- /dev/null +++ b/frontend/in_tsbutton.c @@ -0,0 +1,147 @@ +/* + * (C) GraÅžvydas "notaz" Ignotas, 2011 + * + * This work is licensed under the terms of any of these licenses + * (at your option): + * - GNU GPL, version 2 or later. + * - GNU LGPL, version 2.1 or later. + * See the COPYING file in the top-level directory. + */ + +#include <stdio.h> +#include <tslib.h> + +#include "common/input.h" +#include "in_tsbutton.h" + +#define IN_TSBUTTON_PREFIX "tsbutton:" +#define IN_TSBUTTON_COUNT 4 +static int tsbutton_down_id; +static int last_tsbutton_id; + +#define TS_WIDTH 320 +#define TS_HEIGHT 240 + +// HACK: stealing this from plugin_lib +extern void *tsdev; +extern int (*pts_read)(struct tsdev *dev, struct ts_sample *sample, int nr); +extern int (*pts_fd)(struct tsdev *dev); + +static const char * const in_tsbutton_keys[IN_TSBUTTON_COUNT] = { + "TS1", "TS2", "TS3", "TS4", +}; + +static void in_tsbutton_probe(void) +{ + struct tsdev *dev = tsdev; + if (dev == NULL) { + fprintf(stderr, "in_tsbutton_probe: missing tsdev\n"); + return; + } + + in_register(IN_TSBUTTON_PREFIX "touchscreen as buttons", + pts_fd(dev), NULL, IN_TSBUTTON_COUNT, in_tsbutton_keys, 0); +} + +static const char * const * +in_tsbutton_get_key_names(int *count) +{ + *count = IN_TSBUTTON_COUNT; + return in_tsbutton_keys; +} + +static int update_button(void) +{ + struct tsdev *dev = tsdev; + struct ts_sample sample; + int sx = 0, sy = 0, sp = 0, updated = 0; + + if (dev == NULL) + return -1; + + while (pts_read(dev, &sample, 1) > 0) { + sx = sample.x; + sy = sample.y; + sp = sample.pressure; + updated = 1; + } + + if (updated) { + if (sp == 0) + tsbutton_down_id = -1; + else { + // 0 1 + // 2 3 + tsbutton_down_id = 0; + if (sx > TS_WIDTH / 2) + tsbutton_down_id++; + if (sy > TS_HEIGHT / 2) + tsbutton_down_id += 2; + } + } + + return 0; +} + +static int in_tsbutton_update(void *drv_data, const int *binds, int *result) +{ + int ret, t; + + ret = update_button(); + if (ret != 0) + return ret; + + if (tsbutton_down_id >= 0) + for (t = 0; t < IN_BINDTYPE_COUNT; t++) + result[t] |= binds[IN_BIND_OFFS(tsbutton_down_id, t)]; + + return 0; +} + +static int in_tsbutton_update_keycode(void *data, int *is_down) +{ + int ret, ret_kc = -1, ret_down = 0; + + ret = update_button(); + if (ret != 0) + return ret; + + if (tsbutton_down_id == last_tsbutton_id) + return -1; + + if (tsbutton_down_id >= 0) { + if (last_tsbutton_id >= 0) { + ret_kc = last_tsbutton_id; + last_tsbutton_id = -1; + } + else { + ret_down = 1; + ret_kc = tsbutton_down_id; + last_tsbutton_id = tsbutton_down_id; + } + } + else { + ret_kc = last_tsbutton_id; + last_tsbutton_id = -1; + } + + if (is_down != NULL) + *is_down = ret_down; + + return ret_kc; +} + +static const in_drv_t in_tsbutton_drv = { + .prefix = IN_TSBUTTON_PREFIX, + .probe = in_tsbutton_probe, + .get_key_names = in_tsbutton_get_key_names, + .update = in_tsbutton_update, + .update_keycode = in_tsbutton_update_keycode, +}; + +void in_tsbutton_init(void) +{ + tsbutton_down_id = last_tsbutton_id = -1; + in_register_driver(&in_tsbutton_drv); +} + |