1 #include "../../lv_examples.h"
2 #if LV_USE_IMAGE && LV_BUILD_EXAMPLES
3
set_angle(void * img,int32_t v)4 static void set_angle(void * img, int32_t v)
5 {
6 lv_image_set_rotation(img, v);
7 }
8
set_scale(void * img,int32_t v)9 static void set_scale(void * img, int32_t v)
10 {
11 lv_image_set_scale(img, v);
12 }
13
14 /**
15 * Show transformations (zoom and rotation) using a pivot point.
16 */
lv_example_image_3(void)17 void lv_example_image_3(void)
18 {
19 LV_IMAGE_DECLARE(img_cogwheel_argb);
20
21 /*Now create the actual image*/
22 lv_obj_t * img = lv_image_create(lv_screen_active());
23 lv_image_set_src(img, &img_cogwheel_argb);
24 lv_obj_align(img, LV_ALIGN_CENTER, 50, 50);
25 lv_image_set_pivot(img, 0, 0); /*Rotate around the top left corner*/
26
27 lv_anim_t a;
28 lv_anim_init(&a);
29 lv_anim_set_var(&a, img);
30 lv_anim_set_exec_cb(&a, set_angle);
31 lv_anim_set_values(&a, 0, 3600);
32 lv_anim_set_duration(&a, 5000);
33 lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
34 lv_anim_start(&a);
35
36 lv_anim_set_exec_cb(&a, set_scale);
37 lv_anim_set_values(&a, 128, 256);
38 lv_anim_set_reverse_duration(&a, 3000);
39 lv_anim_start(&a);
40 }
41
42 #endif
43
