mirror of
https://github.com/lvgl/lvgl.git
synced 2025-01-28 07:03:00 +08:00
d939316e26
Signed-off-by: lhdjply <lhdjply@126.com> Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
#include "../../lv_examples.h"
|
|
#if LV_USE_IMAGE && LV_BUILD_EXAMPLES
|
|
|
|
static void set_angle(void * img, int32_t v)
|
|
{
|
|
lv_image_set_rotation(img, v);
|
|
}
|
|
|
|
static void set_scale(void * img, int32_t v)
|
|
{
|
|
lv_image_set_scale(img, v);
|
|
}
|
|
|
|
/**
|
|
* Show transformations (zoom and rotation) using a pivot point.
|
|
*/
|
|
void lv_example_image_3(void)
|
|
{
|
|
LV_IMAGE_DECLARE(img_cogwheel_argb);
|
|
|
|
/*Now create the actual image*/
|
|
lv_obj_t * img = lv_image_create(lv_screen_active());
|
|
lv_image_set_src(img, &img_cogwheel_argb);
|
|
lv_obj_align(img, LV_ALIGN_CENTER, 50, 50);
|
|
lv_image_set_pivot(img, 0, 0); /*Rotate around the top left corner*/
|
|
|
|
lv_anim_t a;
|
|
lv_anim_init(&a);
|
|
lv_anim_set_var(&a, img);
|
|
lv_anim_set_exec_cb(&a, set_angle);
|
|
lv_anim_set_values(&a, 0, 3600);
|
|
lv_anim_set_duration(&a, 5000);
|
|
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
|
|
lv_anim_start(&a);
|
|
|
|
lv_anim_set_exec_cb(&a, set_scale);
|
|
lv_anim_set_values(&a, 128, 256);
|
|
lv_anim_set_playback_duration(&a, 3000);
|
|
lv_anim_start(&a);
|
|
}
|
|
|
|
#endif
|