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fix(draw): be sure angle values are in the correct range

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Gabor Kiss-Vamosi
2022-04-27 14:25:12 +02:00
parent a76bb70a79
commit e624b90db3
4 changed files with 28 additions and 10 deletions
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7
docs/widgets/core/arc.md
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@@ -63,7 +63,14 @@ lv_obj_clear_flag(arc, LV_OBJ_FLAG_CLICKABLE);
If the `LV_OBJ_FLAG_ADV_HITTEST` flag is enabled the arc can be clicked through in the middle. Clicks are recognized only on the ring of the background arc. `lv_obj_set_ext_click_size()` makes the sensitive area larger inside and outside with the given number of pixels.
### Place another object to the knob
Another object can be positioned according to the current position of the arc in order to follow the arc's current value (angle).
To do this use `lv_arc_align_obj_to_angle(arc, obj_to_align, radius_offset)`.
Similarly `lv_arc_rotate_obj_to_angle(arc, obj_to_rotate, radius_offset)` can be used to rotate the object to the current value of the arc.
It's a typical use case to call these functions in the `VALUE_CHANGED` event of the arc.
## Events
- `LV_EVENT_VALUE_CHANGED` sent when the arc is pressed/dragged to set a new value.