208     lv_indev_gesture_recognizer_t * r = recognizer;  in lv_indev_gesture_detect_pinch()  local
211     if(r->info == NULL) {  in lv_indev_gesture_detect_pinch()
213         r->info = init_gesture_info();  in lv_indev_gesture_detect_pinch()
216     if(r->config == NULL) {  in lv_indev_gesture_detect_pinch()
218         r->config = lv_malloc(sizeof(lv_indev_gesture_configuration_t));  in lv_indev_gesture_detect_pinch()
220         LV_ASSERT(r->config != NULL);  in lv_indev_gesture_detect_pinch()
222         r->config->pinch_up_threshold = LV_GESTURE_PINCH_UP_THRESHOLD;  in lv_indev_gesture_detect_pinch()
223         r->config->pinch_down_threshold = LV_GESTURE_PINCH_DOWN_THRESHOLD;  in lv_indev_gesture_detect_pinch()
230         process_touch_event(touch, r->info);  in lv_indev_gesture_detect_pinch()
234 …                  i, touch->id, touch->state, touch->point.x, touch->point.y, r->info->finger_cnt);  in lv_indev_gesture_detect_pinch()
237     LV_LOG_TRACE("Current finger count: %d state: %d", r->info->finger_cnt, r->state);  in lv_indev_gesture_detect_pinch()
240     if(r->info->finger_cnt == 2) {  in lv_indev_gesture_detect_pinch()
242         switch(r->state) {  in lv_indev_gesture_detect_pinch()
249                 gesture_update_center_point(r->info, 2);  in lv_indev_gesture_detect_pinch()
250                 r->state = LV_INDEV_GESTURE_STATE_ONGOING;  in lv_indev_gesture_detect_pinch()
257                 gesture_calculate_factors(r->info, 2);  in lv_indev_gesture_detect_pinch()
259                 if(r->info->scale > LV_GESTURE_PINCH_MAX_INITIAL_SCALE &&  in lv_indev_gesture_detect_pinch()
260                    r->state == LV_INDEV_GESTURE_STATE_ONGOING) {  in lv_indev_gesture_detect_pinch()
261                     r->state = LV_INDEV_GESTURE_STATE_CANCELED;  in lv_indev_gesture_detect_pinch()
265                 LV_ASSERT(r->config != NULL);  in lv_indev_gesture_detect_pinch()
267                 if(r->info->scale > r->config->pinch_up_threshold ||  in lv_indev_gesture_detect_pinch()
268                    r->info->scale < r->config->pinch_down_threshold) {  in lv_indev_gesture_detect_pinch()
270                     if(r->info->scale > 1.0f) {  in lv_indev_gesture_detect_pinch()
271                         r->scale = r->info->scale - (r->config->pinch_up_threshold - 1.0f);  in lv_indev_gesture_detect_pinch()
274                     else if(r->info->scale < 1.0f) {  in lv_indev_gesture_detect_pinch()
276                         r->scale = r->info->scale + (1.0f - r->config->pinch_down_threshold);  in lv_indev_gesture_detect_pinch()
279                     r->type = LV_INDEV_GESTURE_PINCH;  in lv_indev_gesture_detect_pinch()
280                     r->state = LV_INDEV_GESTURE_STATE_RECOGNIZED;  in lv_indev_gesture_detect_pinch()
291         switch(r->state) {  in lv_indev_gesture_detect_pinch()
294                 r->state = LV_INDEV_GESTURE_STATE_ENDED;  in lv_indev_gesture_detect_pinch()
295                 r->type = LV_INDEV_GESTURE_PINCH;  in lv_indev_gesture_detect_pinch()
300                 r->state = LV_INDEV_GESTURE_STATE_CANCELED;  in lv_indev_gesture_detect_pinch()
301                 reset_recognizer(r);  in lv_indev_gesture_detect_pinch()
306                 reset_recognizer(r);  in lv_indev_gesture_detect_pinch()