add slider methods

Author: nia-e

lvgl/src/support.rs

@@ -139,6 +139,9 @@ pub enum Event<T> {
     /// case, `Event<_>::PressLost` is sent.
     Released,
 
+    /// Called when an underlying value is changed e.g. position of a `Slider`.
+    ValueChanged,
+
     /// Pointer-like input devices events (E.g. mouse or touchpad)
     Pointer(PointerEvent),
 
@@ -159,6 +162,7 @@ impl<S> TryFrom<lvgl_sys::lv_event_code_t> for Event<S> {
         const LV_EVENT_LONG_PRESSED_REPEAT: u32 =
             lvgl_sys::lv_event_code_t_LV_EVENT_LONG_PRESSED_REPEAT;
         const LV_EVENT_RELEASED: u32 = lvgl_sys::lv_event_code_t_LV_EVENT_RELEASED;
+        const LV_EVENT_VALUE_CHANGED: u32 = lvgl_sys::lv_event_code_t_LV_EVENT_VALUE_CHANGED;
 
         match value {
             LV_EVENT_PRESSED => Ok(Event::Pressed),
@@ -169,6 +173,7 @@ impl<S> TryFrom<lvgl_sys::lv_event_code_t> for Event<S> {
             LV_EVENT_LONG_PRESSED => Ok(Event::LongPressed),
             LV_EVENT_LONG_PRESSED_REPEAT => Ok(Event::LongPressedRepeat),
             LV_EVENT_RELEASED => Ok(Event::Released),
+            LV_EVENT_VALUE_CHANGED => Ok(Event::ValueChanged),
             _ => Err(()),
         }
     }
@@ -185,6 +190,7 @@ impl<S> From<Event<S>> for lvgl_sys::lv_event_code_t {
             Event::LongPressed => lvgl_sys::lv_event_code_t_LV_EVENT_LONG_PRESSED,
             Event::LongPressedRepeat => lvgl_sys::lv_event_code_t_LV_EVENT_LONG_PRESSED_REPEAT,
             Event::Released => lvgl_sys::lv_event_code_t_LV_EVENT_RELEASED,
+            Event::ValueChanged => lvgl_sys::lv_event_code_t_LV_EVENT_VALUE_CHANGED,
             // TODO: handle all types...
             _ => lvgl_sys::lv_event_code_t_LV_EVENT_CLICKED,
         };

lvgl/src/widgets/arc.rs

@@ -1,4 +1,6 @@
 use crate::widgets::Arc;
+use crate::LvResult;
+use crate::lv_core::obj::NativeObject;
 
 impl Arc {
     // /// Set the start angle, for the given arc part.
@@ -36,6 +38,13 @@ impl Arc {
     //     }
     //     Ok(())
     // }
+
+    /// Gets the current value of the arc
+    pub fn get_value(&self) -> LvResult<i32> {
+        unsafe {
+            Ok(lvgl_sys::lv_bar_get_value(self.core.raw()?.as_ptr()))
+        }
+    }
 }
 /*
 /// The different parts, of an arc object.

lvgl/src/widgets/bar.rs

@@ -18,6 +18,13 @@ impl Bar {
         }
         Ok(())
     }
+
+    /// Gets the current value of the bar
+    pub fn get_value(&self) -> LvResult<i32> {
+        unsafe {
+            Ok(lvgl_sys::lv_bar_get_value(self.core.raw()?.as_ptr()))
+        }
+    }
 }
 /*
 /// The different parts, of a bar object.

lvgl/src/widgets/mod.rs

@@ -5,17 +5,19 @@
 //! widget with no parent will have a screen as its parent. Style data is
 //! inherited from parent objects by default.
 
-//mod arc;
+mod arc;
 mod bar;
 mod keyboard;
 mod label;
 mod meter;
+mod slider;
 
 include!(concat!(env!("OUT_DIR"), "/generated.rs"));
 
 use crate::NativeObject;
-//pub use arc::*;
+pub use arc::*;
 pub use bar::*;
 pub use keyboard::*;
 pub use label::*;
 pub use meter::*;
+pub use slider::*;

lvgl/src/widgets/slider.rs

@@ -0,0 +1,20 @@
+use crate::widgets::Slider;
+use crate::{LvResult, Animation};
+use crate::lv_core::obj::NativeObject;
+
+impl Slider {
+    /// Set a new value on the slider
+    pub fn set_value(&self, value: i32, anim: Animation) -> LvResult<()> {
+        unsafe {
+            lvgl_sys::lv_bar_set_value(self.core.raw()?.as_ptr(), value, anim.into())
+        }
+        Ok(())
+    }
+
+    /// Gets the current value of the slider
+    pub fn get_value(&self) -> LvResult<i32> {
+        unsafe {
+            Ok(lvgl_sys::lv_bar_get_value(self.core.raw()?.as_ptr()))
+        }
+    }
+}