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evdev: Associate touchscreen devices with output up front

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This isn't going to change over time, so just tracking it in the
evdev device is a little easier.  Also, we need to adjust for the
output position when transforming the device events to screen space.
This commit is contained in:
Kristian Høgsberg 2011-09-01 13:25:50 -04:00 • committed by Jonas Ådahl
parent 728a38301f
commit 771c31005d
1 changed files with 12 additions and 8 deletions
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20
compositor/evdev.c
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@ -36,6 +36,7 @@ struct evdev_input {
struct evdev_input_device { struct evdev_input_device {
struct evdev_input *master; struct evdev_input *master;
struct wl_event_source *source; struct wl_event_source *source;
struct wlsc_output *output;
int tool, new_x, new_y; int tool, new_x, new_y;
int base_x, base_y; int base_x, base_y;
int fd; int fd;
@ -91,23 +92,21 @@ evdev_process_key(struct evdev_input_device *device,
static inline void static inline void
evdev_process_absolute_motion(struct evdev_input_device *device, evdev_process_absolute_motion(struct evdev_input_device *device,
struct input_event *e, int value, int *x, int *y, struct input_event *e, int value, int *x, int *y,
int *absolute_event, struct wlsc_compositor *ec) int *absolute_event)
{ {
const int screen_width = container_of(ec->output_list.prev, const int screen_width = device->output->current->width;
struct wlsc_output, link)->current->width; const int screen_height = device->output->current->height;
const int screen_height = container_of(ec->output_list.prev,
struct wlsc_output, link)->current->height;
switch (e->code) { switch (e->code) {
case ABS_X: case ABS_X:
*absolute_event = device->tool; *absolute_event = device->tool;
*x = (value - device->min_x) * screen_width / *x = (value - device->min_x) * screen_width /
(device->max_x - device->min_x); (device->max_x - device->min_x) + device->output->x;
break; break;
case ABS_Y: case ABS_Y:
*absolute_event = device->tool; *absolute_event = device->tool;
*y = (value - device->min_y) * screen_height / *y = (value - device->min_y) * screen_height /
(device->max_y - device->min_y); (device->max_y - device->min_y) + device->output->y;
break; break;
} }
} }
@ -202,7 +201,7 @@ evdev_input_device_data(int fd, uint32_t mask, void *data)
e, value, &dx, &dy); e, value, &dx, &dy);
else else
evdev_process_absolute_motion(device, e, value, evdev_process_absolute_motion(device, e, value,
&x, &y, &absolute_event, ec); &x, &y, &absolute_event);
break; break;
case EV_KEY: case EV_KEY:
if (value == 2) if (value == 2)
@ -283,11 +282,16 @@ evdev_input_device_create(struct evdev_input *master,
{ {
struct evdev_input_device *device; struct evdev_input_device *device;
struct wl_event_loop *loop; struct wl_event_loop *loop;
struct wlsc_compositor *ec;
device = malloc(sizeof *device); device = malloc(sizeof *device);
if (device == NULL) if (device == NULL)
return NULL; return NULL;
ec = (struct wlsc_compositor *) master->base.input_device.compositor;
device->output =
container_of(ec->output_list.next, struct wlsc_output, link);
device->tool = 1; device->tool = 1;
device->new_x = 1; device->new_x = 1;
device->new_y = 1; device->new_y = 1;