mirrors/wlroots
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wlroots/wlroots.git synced 2025-12-15 08:56:26 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Use wl_list for touch points in examples/

Browse source
This commit is contained in:
emersion 2017-11-20 21:26:20 +01:00
parent 151901123f
commit 64221c6da1
No known key found for this signature in database
GPG key ID: 0FDE7BE0E88F5E48
2 changed files with 32 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

33
examples/pointer.c
View file

@ -46,7 +46,7 @@ struct sample_state {
struct wl_listener touch_up;
struct wl_listener touch_down;
struct wl_listener touch_cancel;
struct wlr_list *touch_points;
struct wl_list touch_points;
struct wl_listener tablet_tool_axis;
struct wl_listener tablet_tool_proxmity;
@ -57,22 +57,25 @@ struct sample_state {
struct touch_point {
int32_t touch_id;
double x, y;
struct wl_list link;
};
static void warp_to_touch(struct sample_state *sample,
struct wlr_input_device *dev) {
if (sample->touch_points->length == 0) {
if (wl_list_empty(&sample->touch_points)) {
return;
}
double x = 0, y = 0;
for (size_t i = 0; i < sample->touch_points->length; ++i) {
struct touch_point *point = sample->touch_points->items[i];
size_t n = 0;
struct touch_point *point;
wl_list_for_each(point, &sample->touch_points, link) {
x += point->x;
y += point->y;
n++;
}
x /= sample->touch_points->length;
y /= sample->touch_points->length;
x /= n;
y /= n;
wlr_cursor_warp_absolute(sample->cursor, dev, x, y);
}
@ -197,10 +200,11 @@ static void handle_cursor_axis(struct wl_listener *listener, void *data) {
static void handle_touch_up(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, touch_up);
struct wlr_event_touch_up *event = data;
for (size_t i = 0; i < sample->touch_points->length; ++i) {
struct touch_point *point = sample->touch_points->items[i];
struct touch_point *point, *tmp;
wl_list_for_each_safe(point, tmp, &sample->touch_points, link) {
if (point->touch_id == event->touch_id) {
wlr_list_del(sample->touch_points, i);
wl_list_remove(&point->link);
break;
}
}
@ -215,9 +219,7 @@ static void handle_touch_down(struct wl_listener *listener, void *data) {
point->touch_id = event->touch_id;
point->x = event->x_mm / event->width_mm;
point->y = event->y_mm / event->height_mm;
if (wlr_list_add(sample->touch_points, point) == -1) {
free(point);
}
wl_list_insert(&sample->touch_points, &point->link);
warp_to_touch(sample, event->device);
}
@ -226,8 +228,9 @@ static void handle_touch_motion(struct wl_listener *listener, void *data) {
struct sample_state *sample =
wl_container_of(listener, sample, touch_motion);
struct wlr_event_touch_motion *event = data;
for (size_t i = 0; i < sample->touch_points->length; ++i) {
struct touch_point *point = sample->touch_points->items[i];
struct touch_point *point;
wl_list_for_each(point, &sample->touch_points, link) {
if (point->touch_id == event->touch_id) {
point->x = event->x_mm / event->width_mm;
point->y = event->y_mm / event->height_mm;
@ -257,7 +260,6 @@ int main(int argc, char *argv[]) {
struct sample_state state = {
.default_color = { 0.25f, 0.25f, 0.25f, 1 },
.clear_color = { 0.25f, 0.25f, 0.25f, 1 },
.touch_points = wlr_list_create(),
};
state.config = parse_args(argc, argv);
@ -266,6 +268,7 @@ int main(int argc, char *argv[]) {
wlr_cursor_attach_output_layout(state.cursor, state.layout);
wlr_cursor_map_to_region(state.cursor, state.config->cursor.mapped_box);
wl_list_init(&state.devices);
wl_list_init(&state.touch_points);
// pointer events
wl_signal_add(&state.cursor->events.motion, &state.cursor_motion);