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author | android-build-team Robot <android-build-team-robot@google.com> | 2017-08-06 09:35:10 +0200 |
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committer | android-build-team Robot <android-build-team-robot@google.com> | 2017-08-06 09:35:10 +0200 |
commit | a8c2f0de0117b611c3dbb8d0940f74c36930088e (patch) | |
tree | 170927726db2cc51a077f8b6ca9d87ccf00d2848 /minui/events.cpp | |
parent | release-request-08461da0-a262-4ebb-8c32-784b60a151df-for-git_oc-mr1-release-4216972 snap-temp-L74000000086000437 (diff) | |
parent | Import translations. DO NOT MERGE (diff) | |
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Diffstat (limited to 'minui/events.cpp')
-rw-r--r-- | minui/events.cpp | 47 |
1 files changed, 36 insertions, 11 deletions
diff --git a/minui/events.cpp b/minui/events.cpp index 0e1fd44a0..24c2a8277 100644 --- a/minui/events.cpp +++ b/minui/events.cpp @@ -53,36 +53,37 @@ static bool test_bit(size_t bit, unsigned long* array) { // NOLINT return (array[bit/BITS_PER_LONG] & (1UL << (bit % BITS_PER_LONG))) != 0; } -int ev_init(ev_callback input_cb) { - bool epollctlfail = false; - +int ev_init(ev_callback input_cb, bool allow_touch_inputs) { g_epoll_fd = epoll_create(MAX_DEVICES + MAX_MISC_FDS); if (g_epoll_fd == -1) { return -1; } + bool epollctlfail = false; DIR* dir = opendir("/dev/input"); - if (dir != NULL) { + if (dir != nullptr) { dirent* de; while ((de = readdir(dir))) { - // Use unsigned long to match ioctl's parameter type. - unsigned long ev_bits[BITS_TO_LONGS(EV_MAX)]; // NOLINT - - // fprintf(stderr,"/dev/input/%s\n", de->d_name); if (strncmp(de->d_name, "event", 5)) continue; int fd = openat(dirfd(dir), de->d_name, O_RDONLY); if (fd == -1) continue; + // Use unsigned long to match ioctl's parameter type. + unsigned long ev_bits[BITS_TO_LONGS(EV_MAX)]; // NOLINT + // Read the evbits of the input device. if (ioctl(fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits) == -1) { close(fd); continue; } - // We assume that only EV_KEY, EV_REL, and EV_SW event types are ever needed. + // We assume that only EV_KEY, EV_REL, and EV_SW event types are ever needed. EV_ABS is also + // allowed if allow_touch_inputs is set. if (!test_bit(EV_KEY, ev_bits) && !test_bit(EV_REL, ev_bits) && !test_bit(EV_SW, ev_bits)) { - close(fd); - continue; + if (!allow_touch_inputs || !test_bit(EV_ABS, ev_bits)) { + close(fd); + continue; + } } epoll_event ev; @@ -231,3 +232,27 @@ void ev_iterate_available_keys(const std::function<void(int)>& f) { } } } + +void ev_iterate_touch_inputs(const std::function<void(int)>& action) { + for (size_t i = 0; i < ev_dev_count; ++i) { + // Use unsigned long to match ioctl's parameter type. + unsigned long ev_bits[BITS_TO_LONGS(EV_MAX)] = {}; // NOLINT + if (ioctl(ev_fdinfo[i].fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits) == -1) { + continue; + } + if (!test_bit(EV_ABS, ev_bits)) { + continue; + } + + unsigned long key_bits[BITS_TO_LONGS(KEY_MAX)] = {}; // NOLINT + if (ioctl(ev_fdinfo[i].fd, EVIOCGBIT(EV_ABS, KEY_MAX), key_bits) == -1) { + continue; + } + + for (int key_code = 0; key_code <= KEY_MAX; ++key_code) { + if (test_bit(key_code, key_bits)) { + action(key_code); + } + } + } +} |