mirrors/wlroots
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wlroots/wlroots.git synced 2025-12-14 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

29
examples/touch.c
View file

@ -24,12 +24,13 @@
struct sample_state {
struct wlr_renderer *renderer;
struct wlr_texture *cat_texture;
struct wlr_list *touch_points;
struct wl_list touch_points;
};
struct touch_point {
int32_t touch_id;
double x, y;
struct wl_list link;
};
static void handle_output_frame(struct output_state *output, struct timespec *ts) {
@ -44,14 +45,14 @@ static void handle_output_frame(struct output_state *output, struct timespec *ts
wlr_renderer_begin(sample->renderer, wlr_output);
float matrix[16];
for (size_t i = 0; i < sample->touch_points->length; ++i) {
struct touch_point *p = sample->touch_points->items[i];
struct touch_point *p;
wl_list_for_each(p, &sample->touch_points, link) {
wlr_texture_get_matrix(sample->cat_texture, &matrix,
&wlr_output->transform_matrix,
(int)(p->x * width) - sample->cat_texture->width / 2,
(int)(p->y * height) - sample->cat_texture->height / 2);
wlr_render_with_matrix(sample->renderer,
sample->cat_texture, &matrix);
sample->cat_texture, &matrix);
}
wlr_renderer_end(sample->renderer);
@ -65,17 +66,15 @@ static void handle_touch_down(struct touch_state *tstate, int32_t touch_id,
point->touch_id = touch_id;
point->x = x / width;
point->y = y / height;
if (wlr_list_add(sample->touch_points, point) == -1) {
free(point);
}
wl_list_insert(&sample->touch_points, &point->link);
}
static void handle_touch_up(struct touch_state *tstate, int32_t touch_id) {
struct sample_state *sample = tstate->compositor->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 == touch_id) {
wlr_list_del(sample->touch_points, i);
wl_list_remove(&point->link);
break;
}
}
@ -84,8 +83,8 @@ static void handle_touch_up(struct touch_state *tstate, int32_t touch_id) {
static void handle_touch_motion(struct touch_state *tstate, int32_t touch_id,
double x, double y, double width, double height) {
struct sample_state *sample = tstate->compositor->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 == touch_id) {
point->x = x / width;
point->y = y / height;
@ -95,9 +94,9 @@ static void handle_touch_motion(struct touch_state *tstate, int32_t touch_id,
}
int main(int argc, char *argv[]) {
struct sample_state state = {
.touch_points = wlr_list_create()
};
struct sample_state state;
wl_list_init(&state.touch_points);
struct compositor_state compositor = { 0,
.data = &state,
.output_frame_cb = handle_output_frame,