diff --git a/demos/SConscript b/demos/SConscript
index fbd1cedb9..3ec950149 100644
--- a/demos/SConscript
+++ b/demos/SConscript
@@ -13,6 +13,7 @@ env.Program(os.path.join(BIN_DIR, 'demo1'), ['demo_main.c', 'demo1_app.c']);
 env.Program(os.path.join(BIN_DIR, 'demo2'), ['demo_main.c', 'demo2_app.c']);
 env.Program(os.path.join(BIN_DIR, 'demoui'), ['demo_ui_app.c', 'demo_main.c']);
 env.Program(os.path.join(BIN_DIR, 'demotr'), ['demo_tr_app.c', 'demo_main.c']);
+env.Program(os.path.join(BIN_DIR, 'demo_animator'), ['demo_animator_app.c', 'demo_main.c']);
 
 env.Program(os.path.join(BIN_DIR, 'prefix_xml_ui'), ['prefix_xml_ui.c']);
 
diff --git a/demos/demo_animator_app.c b/demos/demo_animator_app.c
new file mode 100644
index 000000000..8b1501c04
--- /dev/null
+++ b/demos/demo_animator_app.c
@@ -0,0 +1,81 @@
+/**
+ * File:   demo1_app.c
+ * Author: AWTK Develop Team
+ * Brief:  basic class of all widget
+ *
+ * Copyright (c) 2018 - 2018  Guangzhou ZHIYUAN Electronics Co.,Ltd.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * License file for more details.
+ *
+ */
+
+/**
+ * History:
+ * ================================================================
+ * 2018-02-16 Li XianJing <xianjimli@hotmail.com> created
+ *
+ */
+
+#include "base/timer.h"
+#include "base/enums.h"
+#include "base/button.h"
+#include "base/dialog.h"
+#include "base/image.h"
+#include "base/label.h"
+#include "base/mem.h"
+#include "base/utils.h"
+#include "base/utf8.h"
+#include "base/window.h"
+#include "base/slider.h"
+#include "base/group_box.h"
+#include "base/check_button.h"
+#include "base/image_manager.h"
+#include "base/progress_bar.h"
+#include "widget_animators/widget_animator_move.h"
+
+static ret_t on_start(void* ctx, event_t* e) {
+  widget_animator_start((widget_animator_t*)ctx);
+
+  return RET_OK;
+}
+
+static ret_t on_stop(void* ctx, event_t* e) {
+  widget_animator_stop((widget_animator_t*)ctx);
+
+  return RET_OK;
+}
+
+ret_t application_init() {
+  widget_t* image = NULL;
+  widget_t* stop = NULL;
+  widget_t* start = NULL;
+  widget_t* progress_bar = NULL;
+  widget_t* win = window_create(NULL, 0, 0, 0, 0);
+  widget_animator_t* animator = NULL;
+  
+  start = button_create(win, 10, 5, 80, 30);
+  widget_set_text(start, L"Start");
+  
+  stop = button_create(win, 128, 5, 80, 30);
+  widget_set_text(stop, L"Stop");
+
+  image = image_create(win, 10, 230, 100, 100);
+  image_set_image_name(image, "earth");
+  
+  animator = widget_animator_move_create(image, 1000, NULL);
+  widget_animator_set_yoyo(animator, TRUE);
+
+  progress_bar = progress_bar_create(win, 10, 80, 168, 20);
+  
+  animator = widget_animator_move_create(image, 1000, easing_get(EASING_SIN_INOUT));
+  widget_animator_move_set_params(animator, image->x, image->y, image->x + 100, image->y + 100);
+  widget_animator_set_yoyo(animator, TRUE);
+
+  widget_on(start, EVT_CLICK, on_start, animator);
+  widget_on(stop, EVT_CLICK, on_stop, animator);
+
+  return RET_OK;
+}
diff --git a/src/SConscript b/src/SConscript
index 2e20fefbf..8b6cd38c6 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -10,13 +10,14 @@ sources=Glob('base/*.c') +\
   Glob('font/*.c') + \
   Glob('blend/*.c') + \
   Glob('image_loader/*.c') + \
+  Glob('widget_animators/*.c') + \
   ['platforms/platform_default.c', 'tk.c'];
 
 if os.environ['LCD'] == 'NANOVG':
-  sources += ['animator/window_animator_nanovg.c'];
+  sources += ['window_animators/window_animator_nanovg.c'];
   sources += ['lcd/lcd_nanovg.c', 'main_loop/main_loop_nanovg.c'];
 else:
-  sources += ['animator/window_animator_fb.c'];
+  sources += ['window_animators/window_animator_fb.c'];
   sources += ['lcd/lcd_sdl2.c', 'main_loop/main_loop_sdl2.c']
 
 if os.environ['FRAME_BUFFER_FORMAT'] =='rgba8888':
diff --git a/src/base/idle.c b/src/base/idle.c
index aeee50e90..1d89f9b04 100644
--- a/src/base/idle.c
+++ b/src/base/idle.c
@@ -100,8 +100,10 @@ ret_t idle_dispatch(void) {
     return RET_OK;
   }
 
+  nr = s_idle_manager->size;
   idles = (idle_info_t**)s_idle_manager->elms;
-  for (i = 0, nr = s_idle_manager->size; i < nr; i++) {
+  
+  for (i = 0; i < nr; i++) {
     idle_info_t* iter = idles[i];
     if (iter->on_idle) {
       iter->on_idle(iter);
diff --git a/src/base/main_loop.c b/src/base/main_loop.c
index 5ba92a05d..f6bd53ea4 100644
--- a/src/base/main_loop.c
+++ b/src/base/main_loop.c
@@ -35,6 +35,16 @@ ret_t main_loop_quit(main_loop_t* l) {
   return l->quit(l);
 }
 
+ret_t main_loop_wakeup(main_loop_t* l) {
+  return_value_if_fail(l != NULL, RET_BAD_PARAMS);
+
+  if(l->wakeup != NULL) {
+    l->wakeup(l);
+  }
+
+  return RET_OK;
+}
+
 ret_t main_loop_destroy(main_loop_t* l) {
   return_value_if_fail(l != NULL && l->destroy != NULL, RET_BAD_PARAMS);
   l->running = FALSE;
diff --git a/src/base/main_loop.h b/src/base/main_loop.h
index 3a65586f9..705b41c02 100644
--- a/src/base/main_loop.h
+++ b/src/base/main_loop.h
@@ -31,11 +31,13 @@ typedef struct _main_loop_t main_loop_t;
 
 typedef ret_t (*main_loop_run_t)(main_loop_t* l);
 typedef ret_t (*main_loop_quit_t)(main_loop_t* l);
+typedef ret_t (*main_loop_wakeup_t)(main_loop_t* l);
 typedef ret_t (*main_loop_destroy_t)(main_loop_t* l);
 
 struct _main_loop_t {
   main_loop_run_t run;
   main_loop_quit_t quit;
+  main_loop_wakeup_t wakeup;
   main_loop_destroy_t destroy;
 
   bool_t running;
@@ -47,6 +49,7 @@ main_loop_t* main_loop(void);
 ret_t main_loop_set(main_loop_t* loop);
 
 ret_t main_loop_run(main_loop_t* l);
+ret_t main_loop_wakeup(main_loop_t* l);
 ret_t main_loop_quit(main_loop_t* l);
 ret_t main_loop_destroy(main_loop_t* l);
 
diff --git a/src/base/widget_animator.c b/src/base/widget_animator.c
new file mode 100644
index 000000000..c5dfc531f
--- /dev/null
+++ b/src/base/widget_animator.c
@@ -0,0 +1,127 @@
+/**
+ * File:   widget_animator.h
+ * Author: AWTK Develop Team
+ * Brief:  widget animator interface
+ *
+ * Copyright (c) 2018 - 2018  Guangzhou ZHIYUAN Electronics Co.,Ltd.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * License file for more details.
+ *
+ */
+
+/**
+ * History:
+ * ================================================================
+ * 2018-05-15 Li XianJing <xianjimli@hotmail.com> created
+ *
+ */
+
+#include "base/mem.h"
+#include "base/time.h"
+#include "base/timer.h"
+#include "base/widget_animator.h"
+
+ret_t widget_animator_init(widget_animator_t* animator, widget_t* widget, uint32_t duration, easing_func_t easing) {
+  return_value_if_fail(animator != NULL && widget != NULL, RET_BAD_PARAMS);
+  
+  animator->widget = widget;
+  animator->duration = duration;
+  animator->easing = easing != NULL ? easing : easing_get(EASING_LINEAR);
+
+  return RET_OK;
+}
+
+static ret_t widget_animator_on_timer(const timer_info_t* timer) {
+  uint32_t now = timer->now;
+  widget_animator_t* animator = (widget_animator_t*)(timer->ctx);
+  uint32_t end_time = animator->start_time + animator->duration;
+  float_t time_percent = ((float_t)(now - animator->start_time))/animator->duration;
+
+  if(time_percent > 1) {
+    time_percent = 1;
+  }
+
+  if(animator->reversed) {
+    time_percent = 1 - time_percent;
+  }
+
+  widget_animator_update(animator, animator->easing(time_percent));
+
+  if(now >= end_time) {
+    if(animator->repeat) {
+      animator->start_time = now;
+    } else if(animator->yoyo) {
+      animator->start_time = now;
+      animator->reversed = !animator->reversed;
+    } else {
+      widget_animator_destroy(animator);
+      return RET_REMOVE;
+    }
+  }
+
+  return RET_REPEAT;
+}
+
+ret_t widget_animator_start(widget_animator_t* animator) {
+  return_value_if_fail(animator != NULL && animator->timer_id == 0, RET_BAD_PARAMS);
+
+  animator->start_time = time_now_ms();
+  animator->timer_id = timer_add(widget_animator_on_timer, animator, 0); 
+
+  return RET_OK;
+}
+
+ret_t widget_animator_stop(widget_animator_t* animator) {
+  return_value_if_fail(animator != NULL && animator->timer_id > 0, RET_BAD_PARAMS);
+
+  timer_remove(animator->timer_id);
+  animator->timer_id = 0;
+
+  return RET_OK;
+}
+
+ret_t widget_animator_update(widget_animator_t* animator, float_t percent) {
+  return_value_if_fail(animator != NULL && animator->update != NULL, RET_BAD_PARAMS);
+
+  return animator->update(animator, percent);
+}
+
+ret_t widget_animator_set_yoyo(widget_animator_t* animator, bool_t value) {
+  return_value_if_fail(animator != NULL && animator->update != NULL, RET_BAD_PARAMS);
+
+  animator->yoyo = value;
+
+  return RET_OK;
+}
+
+ret_t widget_animator_set_repeat(widget_animator_t* animator, bool_t value) {
+  return_value_if_fail(animator != NULL && animator->update != NULL, RET_BAD_PARAMS);
+
+  animator->repeat = value;
+
+  return RET_OK;
+}
+
+ret_t widget_animator_set_reversed(widget_animator_t* animator, bool_t value) {
+  return_value_if_fail(animator != NULL && animator->update != NULL, RET_BAD_PARAMS);
+
+  animator->reversed = value;
+
+  return RET_OK;
+}
+
+ret_t widget_animator_destroy(widget_animator_t* animator) {
+  return_value_if_fail(animator != NULL, RET_BAD_PARAMS);
+
+  if(animator->destroy != NULL) {
+    return animator->destroy(animator);
+  } else {
+    TKMEM_FREE(animator);
+  }
+
+  return RET_OK;
+}
+
diff --git a/src/base/widget_animator.h b/src/base/widget_animator.h
new file mode 100644
index 000000000..3d13a572b
--- /dev/null
+++ b/src/base/widget_animator.h
@@ -0,0 +1,69 @@
+/**
+ * File:   widget_animator.h
+ * Author: AWTK Develop Team
+ * Brief:  widget animator interface
+ *
+ * Copyright (c) 2018 - 2018  Guangzhou ZHIYUAN Electronics Co.,Ltd.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * License file for more details.
+ *
+ */
+
+/**
+ * History:
+ * ================================================================
+ * 2018-05-15 Li XianJing <xianjimli@hotmail.com> created
+ *
+ */
+
+#ifndef TK_WIDGET_ANIMATOR_H
+#define TK_WIDGET_ANIMATOR_H
+
+#include "base/easing.h"
+#include "base/widget.h"
+
+BEGIN_C_DECLS
+
+struct _widget_animator_t;
+typedef struct _widget_animator_t widget_animator_t;
+
+typedef ret_t (*widget_animator_update_t)(widget_animator_t* animator, float_t percent);
+typedef ret_t (*widget_animator_destroy_t)(widget_animator_t* animator);
+
+/**
+ * @class widget_animator_t
+ * 控件动画接口。
+ */
+typedef struct _widget_animator_t {
+  widget_t* widget;
+  bool_t yoyo;
+  bool_t repeat;
+  bool_t reversed;
+  uint32_t now; 
+  uint32_t start_time; 
+  uint32_t duration; 
+  uint32_t timer_id; 
+
+  easing_func_t easing;
+  widget_animator_update_t update;
+  widget_animator_destroy_t destroy;
+} widget_animator_t;
+
+ret_t widget_animator_init(widget_animator_t* animator, widget_t* widget, uint32_t duration, easing_func_t easing);
+ret_t widget_animator_update(widget_animator_t* animator, float_t percent);
+ret_t widget_animator_start(widget_animator_t* animator);
+ret_t widget_animator_stop(widget_animator_t* animator);
+
+ret_t widget_animator_set_yoyo(widget_animator_t* animator, bool_t value);
+ret_t widget_animator_set_repeat(widget_animator_t* animator, bool_t value);
+ret_t widget_animator_set_reversed(widget_animator_t* animator, bool_t value);
+
+ret_t widget_animator_destroy(widget_animator_t* animator);
+
+END_C_DECLS
+
+#endif/*TK_WIDGET_ANIMATOR_H*/
+
diff --git a/src/widget_animators/widget_animator_move.c b/src/widget_animators/widget_animator_move.c
new file mode 100644
index 000000000..5b98ddbce
--- /dev/null
+++ b/src/widget_animators/widget_animator_move.c
@@ -0,0 +1,58 @@
+/**
+ * File:   widget_animator_move.h
+ * Author: AWTK Develop Team
+ * Brief:  widget animator move
+ *
+ * Copyright (c) 2018 - 2018  Guangzhou ZHIYUAN Electronics Co.,Ltd.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * License file for more details.
+ *
+ */
+
+/**
+ * History:
+ * ================================================================
+ * 2018-05-15 Li XianJing <xianjimli@hotmail.com> created
+ *
+ */
+
+#include "base/mem.h"
+#include "widget_animators/widget_animator_move.h"
+
+static ret_t widget_animator_move_update(widget_animator_t* animator, float_t percent) {
+  widget_animator_move_t* move = (widget_animator_move_t*)animator;
+  return_value_if_fail(move != NULL, RET_BAD_PARAMS);
+  
+  animator->widget->x = move->x_from + (move->x_to - move->x_from) * percent;
+  animator->widget->y = move->y_from + (move->y_to - move->y_from) * percent;
+  widget_invalidate(animator->widget, NULL);
+
+  return RET_OK;
+}
+
+widget_animator_t* widget_animator_move_create(widget_t* widget, uint32_t duration, easing_func_t easing) {
+  widget_animator_t* animator = NULL;
+  return_value_if_fail(widget != NULL && duration > 0, NULL);
+
+  animator = (widget_animator_t*)TKMEM_ZALLOC(widget_animator_move_t);
+  return_value_if_fail(widget_animator_init(animator, widget, duration, easing) == RET_OK, NULL);
+  animator->update = widget_animator_move_update;
+
+  return animator;
+}
+
+ret_t widget_animator_move_set_params(widget_animator_t* animator, xy_t x_from, xy_t y_from, xy_t x_to, xy_t y_to) {
+  widget_animator_move_t* move = (widget_animator_move_t*)animator;
+  return_value_if_fail(move != NULL, RET_BAD_PARAMS);
+  
+  move->x_to = x_to;
+  move->y_to = y_to;
+  move->x_from = x_from;
+  move->y_from = y_from;
+  
+  return RET_OK;
+}
+
diff --git a/src/widget_animators/widget_animator_move.h b/src/widget_animators/widget_animator_move.h
new file mode 100644
index 000000000..744f959d7
--- /dev/null
+++ b/src/widget_animators/widget_animator_move.h
@@ -0,0 +1,48 @@
+/**
+ * File:   widget_animator_move.h
+ * Author: AWTK Develop Team
+ * Brief:  widget animator move
+ *
+ * Copyright (c) 2018 - 2018  Guangzhou ZHIYUAN Electronics Co.,Ltd.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * License file for more details.
+ *
+ */
+
+/**
+ * History:
+ * ================================================================
+ * 2018-05-15 Li XianJing <xianjimli@hotmail.com> created
+ *
+ */
+
+#ifndef TK_WIDGET_ANIMATOR_MOVE_H
+#define TK_WIDGET_ANIMATOR_MOVE_H
+
+#include "base/widget_animator.h"
+
+BEGIN_C_DECLS
+
+/**
+ * @class widget_animator_move_t
+ * 移动控件位置动画接口。
+ */
+typedef struct _widget_animator_move_t {
+  widget_animator_t base;
+
+  xy_t x_to;
+  xy_t y_to;
+  xy_t x_from;
+  xy_t y_from;
+} widget_animator_move_t;
+
+widget_animator_t* widget_animator_move_create(widget_t* widget, uint32_t duration, easing_func_t easing);
+ret_t widget_animator_move_set_params(widget_animator_t* animator, xy_t x_from, xy_t y_from, xy_t x_to, xy_t y_to);
+
+END_C_DECLS
+
+#endif/*TK_WIDGET_ANIMATOR_MOVE_H*/
+
diff --git a/src/animator/bottom_to_top.inc b/src/window_animators/bottom_to_top.inc
similarity index 100%
rename from src/animator/bottom_to_top.inc
rename to src/window_animators/bottom_to_top.inc
diff --git a/src/animator/center_scale.inc b/src/window_animators/center_scale.inc
similarity index 100%
rename from src/animator/center_scale.inc
rename to src/window_animators/center_scale.inc
diff --git a/src/animator/common.inc b/src/window_animators/common.inc
similarity index 100%
rename from src/animator/common.inc
rename to src/window_animators/common.inc
diff --git a/src/animator/fade.inc b/src/window_animators/fade.inc
similarity index 100%
rename from src/animator/fade.inc
rename to src/window_animators/fade.inc
diff --git a/src/animator/htranslate.inc b/src/window_animators/htranslate.inc
similarity index 100%
rename from src/animator/htranslate.inc
rename to src/window_animators/htranslate.inc
diff --git a/src/animator/top_to_bottom.inc b/src/window_animators/top_to_bottom.inc
similarity index 100%
rename from src/animator/top_to_bottom.inc
rename to src/window_animators/top_to_bottom.inc
diff --git a/src/animator/vtranslate.inc b/src/window_animators/vtranslate.inc
similarity index 100%
rename from src/animator/vtranslate.inc
rename to src/window_animators/vtranslate.inc
diff --git a/src/animator/window_animator_fb.c b/src/window_animators/window_animator_fb.c
similarity index 100%
rename from src/animator/window_animator_fb.c
rename to src/window_animators/window_animator_fb.c
diff --git a/src/animator/window_animator_nanovg.c b/src/window_animators/window_animator_nanovg.c
similarity index 100%
rename from src/animator/window_animator_nanovg.c
rename to src/window_animators/window_animator_nanovg.c
diff --git a/src/animator/window_animator_null.c b/src/window_animators/window_animator_null.c
similarity index 100%
rename from src/animator/window_animator_null.c
rename to src/window_animators/window_animator_null.c