我试图将触摸事件添加到使用EFL库开发的表盘上。但是，尽管它应该是透明的，但触摸层要么不起作用，要么当它不能工作时，它完全覆盖了我的表盘。
创建监视窗口的代码是：
Evas_Object *win = NULL;
int ret = EINA_FALSE;
/*
* Get watch window object
*/
ret = watch_app_get_elm_win(&win);
if (ret != APP_ERROR_NONE) {
dlog_print(DLOG_ERROR, LOG_TAG, "failed to get watch window. err = %d", ret);
return NULL;
}
evas_object_resize(win, width, height);
/* <Variant A or B here> */
evas_object_show(win);
然后，我尝试创建一个透明的手势层并触摸回调（如https://docs.tizen.org/application/native/guides/ui/efl/touch-gesture中所述）。我尝试了两种变体。
变体A-我使用为手表创建的相同窗口（获胜）。没有错误，但不起作用，没有触摸事件：
/* Variant A */
/* Gesture layer transparent object */
Evas_Object *r;
/* Gesture layer object */
Evas_Object *g;
win = elm_win_util_standard_add("gesture_layer", "Gesture Layer");
elm_win_autodel_set(win, EINA_TRUE);
/* Gesture layer transparent object */
r = evas_object_rectangle_add(evas_object_evas_get(win));
evas_object_move(r, 0, 0);
evas_object_color_set(r, 0, 0, 255, 128);
elm_win_resize_object_add(win, r);
/* Gesture layer object */
g = elm_gesture_layer_add(win);
elm_gesture_layer_attach(g, r);
evas_object_show(r);
/* Set callbacks */
elm_gesture_layer_cb_set(g, ELM_GESTURE_N_TAPS, ELM_GESTURE_STATE_START, n_finger_tap_start, NULL);
变体B-我将单独的对象winTouch用于触摸层。它可以工作，但是该图层看起来是完全不透明的，无法看到表面：
/* Variant B */
Evas_Object *winTouch;
/* Gesture layer transparent object */
Evas_Object *r;
/* Gesture layer object */
Evas_Object *g;
winTouch = elm_win_util_standard_add("gesture_layer", "Gesture Layer");
elm_win_autodel_set(winTouch, EINA_TRUE);
/* Gesture layer transparent object */
r = evas_object_rectangle_add(evas_object_evas_get(winTouch));
evas_object_move(r, 0, 0);
evas_object_color_set(r, 0, 0, 255, 0);
elm_win_resize_object_add(winTouch, r);
/* Gesture layer object */
g = elm_gesture_layer_add(winTouch);
elm_gesture_layer_attach(g, r);
evas_object_show(r);
evas_object_show(winTouch); // <--- Without this line, Variant B behaves like Variant A
/* Set callbacks */
elm_gesture_layer_cb_set(g, ELM_GESTURE_N_TAPS, ELM_GESTURE_STATE_START, n_finger_tap_start, NULL);
// and other callbacks
我在做什么错？
您无需为手势层创建新窗口。
您从API获得了一个窗口。然后您使用elm_win_add API创建了一个新窗口吗？
我下面的示例代码效果很好。窗户是透明的。
Plz会仔细检查您的代码，如果没有发现错误的内容。
为什么不共享完整的代码。我会环顾四周。
static Evas_Event_Flags
n_finger_tap_start(void *data , void *event_info)
{
printf("tap start\n");
return EVAS_EVENT_FLAG_ON_HOLD;
}
void
test_gesture_layer(void *data EINA_UNUSED, Evas_Object *obj EINA_UNUSED,
void *event_info EINA_UNUSED)
{
Evas_Coord w, h;
Evas_Object *win;
w = 480;
h = 800;
win = elm_win_add(NULL, "gesture-layer", ELM_WIN_BASIC);
elm_win_title_set(win, "Gesture Layer");
elm_win_autodel_set(win, EINA_TRUE);
evas_object_resize(win, w, h);
Evas_Object *r, *g;
r = evas_object_rectangle_add(evas_object_evas_get(win));
evas_object_move(r, 0, 0);
evas_object_color_set(r, 0, 0, 0, 0);
elm_win_resize_object_add(win, r);
g = elm_gesture_layer_add(win);
elm_gesture_layer_attach(g, r);
evas_object_show(r);
elm_gesture_layer_cb_set(g, ELM_GESTURE_N_TAPS,
ELM_GESTURE_STATE_START, n_finger_tap_start, NULL);
evas_object_show(win);
}