From cb8a78137dded24187ef99b1d6a3c421e4c5d90c Mon Sep 17 00:00:00 2001
From: Rafael Caricio <rafael@caricio.com>
Date: Sun, 31 May 2020 12:07:24 +0200
Subject: [PATCH] Possible to set values in the bar widget with animations

---
 examples/bar.rs         |  6 +++---
 lvgl/src/support.rs     | 14 ++++++++++++++
 lvgl/src/widgets/bar.rs |  7 ++++---
 3 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/examples/bar.rs b/examples/bar.rs
index 048e8ee..4d14c29 100644
--- a/examples/bar.rs
+++ b/examples/bar.rs
@@ -3,7 +3,7 @@ use embedded_graphics::prelude::*;
 use embedded_graphics_simulator::{
     OutputSettingsBuilder, SimulatorDisplay, SimulatorEvent, Window,
 };
-use lvgl::{self, widgets::Bar, Align, Color, DisplayDriver, Label, Object, Style, UI};
+use lvgl::{self, widgets::Bar, Align, Animation, Color, DisplayDriver, Label, Object, Style, UI};
 use lvgl_sys;
 use std::sync::{mpsc, Arc, Mutex};
 use std::thread::sleep;
@@ -38,7 +38,7 @@ fn main() -> Result<(), String> {
     bar.set_size(175, 50);
     bar.set_align(&mut screen, Align::Center, 0, 0);
     bar.set_range(0, 100);
-    bar.set_value(0);
+    bar.set_value(0, Animation::OFF);
 
     let mut loading_lbl = Label::new(&mut screen);
     loading_lbl.set_text("Loading...");
@@ -67,7 +67,7 @@ fn main() -> Result<(), String> {
         if i > 100 {
             i = 0;
         }
-        bar.set_value(i);
+        bar.set_value(i, Animation::OFF);
         i += 1;
 
         sleep(Duration::from_millis(25));
diff --git a/lvgl/src/support.rs b/lvgl/src/support.rs
index 5d38236..980d7af 100644
--- a/lvgl/src/support.rs
+++ b/lvgl/src/support.rs
@@ -325,3 +325,17 @@ pub enum Align {
     OutRightMid,
     OutRightBottom,
 }
+
+pub enum Animation {
+    ON,
+    OFF,
+}
+
+impl From<Animation> for lvgl_sys::lv_anim_enable_t {
+    fn from(anim: Animation) -> Self {
+        match anim {
+            Animation::ON => lvgl_sys::LV_ANIM_ON as u8,
+            Animation::OFF => lvgl_sys::LV_ANIM_OFF as u8,
+        }
+    }
+}
diff --git a/lvgl/src/widgets/bar.rs b/lvgl/src/widgets/bar.rs
index 17a1be6..7315efa 100644
--- a/lvgl/src/widgets/bar.rs
+++ b/lvgl/src/widgets/bar.rs
@@ -1,3 +1,4 @@
+use crate::support::Animation;
 use crate::support::{NativeObject, ObjectX};
 use core::ptr;
 use lvgl_sys;
@@ -24,10 +25,10 @@ impl Bar {
         }
     }
 
-    /// Set the value of the bar
-    pub fn set_value(&mut self, value: i16) {
+    /// Set a new value on the bar
+    pub fn set_value(&mut self, value: i16, anim: Animation) {
         unsafe {
-            lvgl_sys::lv_bar_set_value(self.core.raw().as_mut(), value, 0);
+            lvgl_sys::lv_bar_set_value(self.core.raw().as_mut(), value, anim.into());
         }
     }
 }