From: Tiago Vignatti Date: Wed, 21 Dec 2011 17:34:09 +0000 (+0200) Subject: evdev: Add ABS_MT_* support for direct touch devices X-Git-Tag: 0.1.0~163^2~118 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8687708937062395e5b657a36a89d7606d31067d;p=platform%2Fupstream%2Flibinput.git evdev: Add ABS_MT_* support for direct touch devices This adds ABS_MT_* support for direct touch devices and notifies the compositor. The compositor has a stub for now. Signed-off-by: Tiago Vignatti --- diff --git a/compositor/evdev.c b/compositor/evdev.c index 13832dc..11f7f5e 100644 --- a/compositor/evdev.c +++ b/compositor/evdev.c @@ -47,17 +47,22 @@ struct evdev_input_device { struct { int min_x, max_x, min_y, max_y; int old_x, old_y, reset_x, reset_y; + int slot_mt; } abs; - int is_touchpad; + int is_touchpad, is_mt; }; /* event type flags */ -#define EVDEV_ABSOLUTE_MOTION (1 << 0) -#define EVDEV_RELATIVE_MOTION (1 << 1) +#define EVDEV_ABSOLUTE_MOTION (1 << 0) +#define EVDEV_ABSOLUTE_MT_DOWN (1 << 1) +#define EVDEV_ABSOLUTE_MT_MOTION (1 << 2) +#define EVDEV_ABSOLUTE_MT_UP (1 << 3) +#define EVDEV_RELATIVE_MOTION (1 << 4) struct evdev_motion_accumulator { int x, y; int dx, dy; + int mt_x, mt_y; int type; /* event type flags */ }; @@ -83,8 +88,14 @@ evdev_process_key(struct evdev_input_device *device, device->abs.reset_y = 1; } break; - case BTN_TOUCH: + /* Multitouch touchscreen devices might not send individually + * button events each time a new finger is down. So we don't + * send notification for such devices and we solve the button + * case emulating on compositor side. */ + if (device->is_mt) + break; + /* Treat BTN_TOUCH from devices that only have BTN_TOUCH as * BTN_LEFT */ e->code = BTN_LEFT; @@ -108,6 +119,39 @@ evdev_process_key(struct evdev_input_device *device, } } +static void +evdev_process_touch(struct evdev_input_device *device, + struct input_event *e, int time, + struct evdev_motion_accumulator *accum) +{ + const int screen_width = device->output->current->width; + const int screen_height = device->output->current->height; + + switch (e->code) { + case ABS_MT_SLOT: + device->abs.slot_mt = e->value; + break; + case ABS_MT_TRACKING_ID: + if (e->value >= 0) + accum->type |= EVDEV_ABSOLUTE_MT_DOWN; + else + accum->type |= EVDEV_ABSOLUTE_MT_UP; + break; + case ABS_MT_POSITION_X: + accum->mt_x = (e->value - device->abs.min_x) * screen_width / + (device->abs.max_x - device->abs.min_x) + + device->output->x; + accum->type |= EVDEV_ABSOLUTE_MT_MOTION; + break; + case ABS_MT_POSITION_Y: + accum->mt_y = (e->value - device->abs.min_y) * screen_height / + (device->abs.max_y - device->abs.min_y) + + device->output->y; + accum->type |= EVDEV_ABSOLUTE_MT_MOTION; + break; + } +} + static inline void evdev_process_absolute_motion(struct evdev_input_device *device, struct input_event *e, struct evdev_motion_accumulator *accum) @@ -120,13 +164,13 @@ evdev_process_absolute_motion(struct evdev_input_device *device, accum->x = (e->value - device->abs.min_x) * screen_width / (device->abs.max_x - device->abs.min_x) + device->output->x; - accum->type = EVDEV_ABSOLUTE_MOTION; + accum->type |= EVDEV_ABSOLUTE_MOTION; break; case ABS_Y: accum->y = (e->value - device->abs.min_y) * screen_height / (device->abs.max_y - device->abs.min_y) + device->output->y; - accum->type = EVDEV_ABSOLUTE_MOTION; + accum->type |= EVDEV_ABSOLUTE_MOTION; break; } } @@ -149,7 +193,7 @@ evdev_process_absolute_motion_touchpad(struct evdev_input_device *device, (device->abs.max_x - device->abs.min_x); } device->abs.old_x = e->value; - accum->type = EVDEV_RELATIVE_MOTION; + accum->type |= EVDEV_RELATIVE_MOTION; break; case ABS_Y: e->value -= device->abs.min_y; @@ -162,7 +206,7 @@ evdev_process_absolute_motion_touchpad(struct evdev_input_device *device, (device->abs.max_y - device->abs.min_y); } device->abs.old_y = e->value; - accum->type = EVDEV_RELATIVE_MOTION; + accum->type |= EVDEV_RELATIVE_MOTION; break; } } @@ -174,15 +218,29 @@ evdev_process_relative_motion(struct input_event *e, switch (e->code) { case REL_X: accum->dx += e->value; - accum->type = EVDEV_RELATIVE_MOTION; + accum->type |= EVDEV_RELATIVE_MOTION; break; case REL_Y: accum->dy += e->value; - accum->type = EVDEV_RELATIVE_MOTION; + accum->type |= EVDEV_RELATIVE_MOTION; break; } } +static inline void +evdev_process_absolute(struct evdev_input_device *device, + struct input_event *e, int time, + struct evdev_motion_accumulator *accum) +{ + if (device->is_touchpad) { + evdev_process_absolute_motion_touchpad(device, e, accum); + } else if (device->is_mt) { + evdev_process_touch(device, e, time, accum); + } else { + evdev_process_absolute_motion(device, e, accum); + } +} + static int is_motion_event(struct input_event *e) { @@ -197,6 +255,8 @@ is_motion_event(struct input_event *e) switch (e->code) { case ABS_X: case ABS_Y: + case ABS_MT_POSITION_X: + case ABS_MT_POSITION_Y: return 1; } } @@ -205,33 +265,40 @@ is_motion_event(struct input_event *e) } static void -evdev_reset_accum(struct wl_input_device *device, - struct evdev_motion_accumulator *accum) -{ - memset(accum, 0, sizeof *accum); - - /* There are cases where only one axis on ts devices can be sent - * through the bytestream whereas the other could be omitted. For - * this, we have to save the old value that will be forwarded without - * modifications to the compositor. */ - accum->x = device->x; - accum->y = device->y; -} - -static void evdev_flush_motion(struct wl_input_device *device, uint32_t time, - struct evdev_motion_accumulator *accum) + struct evdev_motion_accumulator *accum, int slot_mt) { if (!accum->type) return; - if (accum->type == EVDEV_RELATIVE_MOTION) + if (accum->type & EVDEV_RELATIVE_MOTION) { notify_motion(device, time, device->x + accum->dx, device->y + accum->dy); - if (accum->type == EVDEV_ABSOLUTE_MOTION) + accum->type &= ~EVDEV_RELATIVE_MOTION; + accum->dx = 0; + accum->dy = 0; + } + if (accum->type & EVDEV_ABSOLUTE_MT_DOWN) { + notify_touch(device, time, slot_mt, accum->mt_x, accum->mt_y, + WL_INPUT_DEVICE_TOUCH_DOWN); + accum->type &= ~EVDEV_ABSOLUTE_MT_DOWN; + accum->type &= ~EVDEV_ABSOLUTE_MT_MOTION; + } + if (accum->type & EVDEV_ABSOLUTE_MT_MOTION) { + notify_touch(device, time, slot_mt, accum->mt_x, accum->mt_y, + WL_INPUT_DEVICE_TOUCH_MOTION); + accum->type &= ~EVDEV_ABSOLUTE_MT_DOWN; + accum->type &= ~EVDEV_ABSOLUTE_MT_MOTION; + } + if (accum->type & EVDEV_ABSOLUTE_MT_UP) { + notify_touch(device, time, slot_mt, 0, 0, + WL_INPUT_DEVICE_TOUCH_UP); + accum->type &= ~EVDEV_ABSOLUTE_MT_UP; + } + if (accum->type & EVDEV_ABSOLUTE_MOTION) { notify_motion(device, time, accum->x, accum->y); - - evdev_reset_accum(device, accum); + accum->type &= ~EVDEV_ABSOLUTE_MOTION; + } } static int @@ -254,7 +321,9 @@ evdev_input_device_data(int fd, uint32_t mask, void *data) return 1; } - evdev_reset_accum(&device->master->base.input_device, &accumulator); + accumulator.type = 0; + accumulator.mt_x = accumulator.x = device->master->base.input_device.x; + accumulator.mt_y = accumulator.y = device->master->base.input_device.y; e = ev; end = (void *) ev + len; @@ -266,18 +335,14 @@ evdev_input_device_data(int fd, uint32_t mask, void *data) * events and send as a bunch */ if (!is_motion_event(e)) evdev_flush_motion(&device->master->base.input_device, - time, &accumulator); + time, &accumulator, + device->abs.slot_mt); switch (e->type) { case EV_REL: evdev_process_relative_motion(e, &accumulator); break; case EV_ABS: - if (device->is_touchpad) - evdev_process_absolute_motion_touchpad(device, - e, &accumulator); - else - evdev_process_absolute_motion(device, e, - &accumulator); + evdev_process_absolute(device, e, time, &accumulator); break; case EV_KEY: evdev_process_key(device, e, time); @@ -285,7 +350,8 @@ evdev_input_device_data(int fd, uint32_t mask, void *data) } } - evdev_flush_motion(&device->master->base.input_device, time, &accumulator); + evdev_flush_motion(&device->master->base.input_device, time, + &accumulator, device->abs.slot_mt); return 1; } @@ -329,6 +395,10 @@ evdev_configure_device(struct evdev_input_device *device) device->abs.min_y = absinfo.minimum; device->abs.max_y = absinfo.maximum; } + if (TEST_BIT(abs_bits, ABS_MT_SLOT)) { + device->is_mt = 1; + device->abs.slot_mt = 0; + } } if (TEST_BIT(ev_bits, EV_KEY)) { has_key = 1; @@ -366,7 +436,9 @@ evdev_input_device_create(struct evdev_input *master, device->master = master; device->is_touchpad = 0; + device->is_mt = 0; device->devnode = strdup(path); + device->abs.slot_mt = -1; device->fd = open(path, O_RDONLY); if (device->fd < 0)