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[patch] Wayland touch event patch

sdl-video-wayland-events-touch.patch (text/plain), 4.62 KB, created by Moritz Bitsch on 2017-05-09 07:24:31 UTC

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Description:

Filename:

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Creator: Moritz Bitsch

Created: 2017-05-09 07:24:31 UTC

Size: 4.62 KB

patch

obsolete

>diff -r 50ffb2b7ee1c src/video/wayland/SDL_waylandevents.c
>--- a/src/video/wayland/SDL_waylandevents.c	Sun May 07 21:02:46 2017 +0200
>+++ b/src/video/wayland/SDL_waylandevents.c	Tue May 09 09:14:04 2017 +0200
>@@ -51,6 +51,7 @@
>     SDL_VideoData *display;
>     struct wl_seat *seat;
>     struct wl_pointer *pointer;
>+    struct wl_touch *touch;
>     struct wl_keyboard *keyboard;
>     SDL_WaylandDataDevice *data_device;
>     struct zwp_relative_pointer_v1 *relative_pointer;
>@@ -70,6 +71,87 @@
>     } xkb;
> };
> 
>+struct SDL_WaylandTouchPoint {
>+    SDL_TouchID id;
>+    int x;
>+    int y;
>+
>+    struct SDL_WaylandTouchPoint* prev;
>+    struct SDL_WaylandTouchPoint* next;
>+};
>+
>+struct SDL_WaylandTouchPointList {
>+    struct SDL_WaylandTouchPoint* head;
>+    struct SDL_WaylandTouchPoint* tail;
>+};
>+
>+static struct SDL_WaylandTouchPointList touch_points = {NULL, NULL};
>+
>+static void
>+touch_add(SDL_TouchID id, int x, int y)
>+{
>+    struct SDL_WaylandTouchPoint* tp = SDL_malloc(sizeof(struct SDL_WaylandTouchPoint));
>+
>+    tp->id = id;
>+    tp->x = x;
>+    tp->y = y;
>+
>+    if (touch_points.tail) {
>+        touch_points.tail->next = tp;
>+        tp->prev = touch_points.tail;
>+    } else {
>+        touch_points.head = tp;
>+        tp->prev = NULL;
>+    }
>+
>+    touch_points.tail = tp;
>+    tp->next = NULL;
>+}
>+
>+static void
>+touch_update(SDL_TouchID id, int x, int y)
>+{
>+    struct SDL_WaylandTouchPoint* tp = touch_points.head;
>+
>+    while (tp) {
>+        if (tp->id == id) {
>+            tp->x = x;
>+            tp->y = y;
>+        }
>+
>+        tp = tp->next;
>+    }
>+}
>+
>+static void
>+touch_del(SDL_TouchID id, int* x, int* y)
>+{
>+    struct SDL_WaylandTouchPoint* tp = touch_points.head;
>+
>+    while (tp) {
>+        if (tp->id == id) {
>+            *x = tp->x;
>+            *y = tp->y;
>+
>+            if (tp->prev) {
>+                tp->prev->next = tp->next;
>+            } else {
>+                touch_points.head = tp->next;
>+            }
>+
>+            if (tp->next) {
>+                tp->next->prev = tp->prev;
>+            } else {
>+                touch_points.tail = tp->prev;
>+            }
>+
>+            SDL_free(tp);
>+        }
>+
>+        tp = tp->next;
>+    }
>+}
>+
> void
> Wayland_PumpEvents(_THIS)
> {
>@@ -270,6 +352,63 @@
> };
> 
> static void
>+touch_handler_down(void *data, struct wl_touch *touch, unsigned int serial,
>+                   unsigned int timestamp, struct wl_surface *surface,
>+                   int id, wl_fixed_t fx, wl_fixed_t fy)
>+{
>+    int x, y;
>+
>+    x = wl_fixed_to_int(fx);
>+    y = wl_fixed_to_int(fy);
>+
>+    touch_add(id, x, y);
>+    SDL_SendTouch(1, (SDL_FingerID)id, SDL_TRUE, x, y, 1.0f);
>+}
>+
>+static void
>+touch_handler_up(void *data, struct wl_touch *touch, unsigned int serial,
>+                 unsigned int timestamp, int id)
>+{
>+    int x, y;
>+
>+    touch_del(id, &x, &y);
>+    SDL_SendTouch(1, (SDL_FingerID)id, SDL_FALSE, x, y, 0.0f);
>+}
>+
>+static void
>+touch_handler_motion(void *data, struct wl_touch *touch, unsigned int timestamp,
>+                     int id, wl_fixed_t fx, wl_fixed_t fy)
>+{
>+    int x, y;
>+
>+    x = wl_fixed_to_int(fx);
>+    y = wl_fixed_to_int(fy);
>+
>+    touch_update(id, x, y);
>+    SDL_SendTouchMotion(1, (SDL_FingerID)id, x, y, 1.0f);
>+}
>+
>+static void
>+touch_handler_frame(void *data, struct wl_touch *touch)
>+{
>+
>+}
>+
>+static void
>+touch_handler_cancel(void *data, struct wl_touch *touch)
>+{
>+
>+}
>+
>+static const struct wl_touch_listener touch_listener = {
>+    touch_handler_down,
>+    touch_handler_up,
>+    touch_handler_motion,
>+    touch_handler_frame,
>+    touch_handler_cancel
>+};
>+
>+static void
> keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
>                        uint32_t format, int fd, uint32_t size)
> {
>@@ -421,6 +560,18 @@
>         input->pointer = NULL;
>     }
> 
>+    if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) {
>+        SDL_AddTouch(1, "wayland_touch");
>+        input->touch = wl_seat_get_touch(seat);
>+        wl_touch_set_user_data(input->touch, input);
>+        wl_touch_add_listener(input->touch, &touch_listener,
>+                                 input);
>+    } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) {
>+        SDL_DelTouch(1);
>+        wl_touch_destroy(input->touch);
>+        input->touch = NULL;
>+    }
>+
>     if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
>         input->keyboard = wl_seat_get_keyboard(seat);
>         wl_keyboard_set_user_data(input->keyboard, input);
>@@ -740,6 +891,11 @@
>     if (input->pointer)
>         wl_pointer_destroy(input->pointer);
> 
>+    if (input->touch) {
>+        SDL_DelTouch(1);
>+        wl_touch_destroy(input->touch);
>+    }
>+
>     if (input->seat)
>         wl_seat_destroy(input->seat);
>

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We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.