example: lottieviewer - fixed frame no (#528)

There is a problem (issue #527) with totalFrame() in rlottie.
As lottieviewer didn't showed the actual frame number, but calculated it from
progress, it camouflaged the problem. Now the actual frame number and the
total number of frames are displayed.

example/lottieview.cpp

@@ -109,7 +109,6 @@ void LottieView::seek(float pos)
 {
     if (!mRenderDelegate) return;
 
-
     mPos = mapProgress(pos);
 
     // check if the pos maps to the current frame

example/lottieviewer.cpp

@@ -62,12 +62,13 @@ _layout_del_cb(void *data, Evas *, Evas_Object *, void *)
 }
 
 static void
-_update_frame_info(AppInfo *info, double pos)
+_update_frame_info(AppInfo *info)
 {
-   int frameNo = pos * info->view->getTotalFrame();
-   char buf[64];
+   long currFrameNo = info->view->mCurFrame;
+   long totalFrameNo = info->view->getTotalFrame();
 
-   sprintf(buf, "%d / %ld", frameNo, info->view->getTotalFrame());
+   char buf[64];
+   sprintf(buf, "%ld (total: %ld)", currFrameNo, totalFrameNo);
    elm_object_part_text_set(info->layout, "text", buf);
 }
 
@@ -96,7 +97,7 @@ _animator_cb(void *data)
     if (info && info->autoPlaying && info->view)
       {
          float pos = info->view->getPos();
-         _update_frame_info(info, pos);
+         _update_frame_info(info);
          elm_slider_value_set(info->slider, (double)pos);
          evas_object_image_pixels_dirty_set(info->view->getImage(), EINA_TRUE);
          if (pos >= 1.0)
@@ -111,20 +112,20 @@ _slider_cb(void *data, Evas_Object *obj, void *event_info EINA_UNUSED)
    double val = elm_slider_value_get(obj);
    AppInfo *info = (AppInfo *)data;
 
-   _update_frame_info(info, val);
-
    if (!info->autoPlaying)
      {
         info->view->seek(val);
         evas_object_image_pixels_dirty_set(info->view->getImage(), EINA_TRUE);
      }
+
+   _update_frame_info(info);
 }
 
 static void
 _button_clicked_cb(void *data, Evas_Object */*obj*/, void */*event_info*/)
 {
    AppInfo *info = (AppInfo *)data;
-
+   if (info->view->getPos() >= 1.0f) info->view->mPos = 0.0f;
    _toggle_start_button(info);
 }
 
@@ -133,7 +134,6 @@ create_layout(Evas_Object *parent, const char *file)
 {
    Evas_Object *layout, *slider, *image, *button;
    Ecore_Animator *animator;
-   char buf[64];
    AppInfo *info = (AppInfo *)calloc(sizeof(AppInfo), 1);
 
    //LAYOUT
@@ -176,10 +176,9 @@ create_layout(Evas_Object *parent, const char *file)
    info->animator = animator;
    evas_object_event_callback_add(layout, EVAS_CALLBACK_DEL, _layout_del_cb, (void *)info);
 
-   sprintf(buf, "%d / %ld", 0, view->getTotalFrame());
-   elm_object_part_text_set(layout, "text", buf);
-
    view->seek(0.0);
+   _update_frame_info(info);
+
    return layout;
 }