Allow setting the progress bar height (#3183)

* allow setting the progress bar height

* changelog entry

* remove the changelog entry

Author: s-nie

crates/egui/src/widgets/progress_bar.rs

@@ -12,6 +12,7 @@ enum ProgressBarText {
 pub struct ProgressBar {
     progress: f32,
     desired_width: Option<f32>,
+    desired_height: Option<f32>,
     text: Option<ProgressBarText>,
     fill: Option<Color32>,
     animate: bool,
@@ -23,6 +24,7 @@ impl ProgressBar {
         Self {
             progress: progress.clamp(0.0, 1.0),
             desired_width: None,
+            desired_height: None,
             text: None,
             fill: None,
             animate: false,
@@ -35,6 +37,12 @@ impl ProgressBar {
         self
     }
 
+    /// The desired height of the bar. Will use the default interaction size if not set.
+    pub fn desired_height(mut self, desired_height: f32) -> Self {
+        self.desired_height = Some(desired_height);
+        self
+    }
+
     /// The fill color of the bar.
     pub fn fill(mut self, color: Color32) -> Self {
         self.fill = Some(color);
@@ -67,6 +75,7 @@ impl Widget for ProgressBar {
         let ProgressBar {
             progress,
             desired_width,
+            desired_height,
             text,
             fill,
             animate,
@@ -76,7 +85,7 @@ impl Widget for ProgressBar {
 
         let desired_width =
             desired_width.unwrap_or_else(|| ui.available_size_before_wrap().x.at_least(96.0));
-        let height = ui.spacing().interact_size.y;
+        let height = desired_height.unwrap_or(ui.spacing().interact_size.y);
         let (outer_rect, response) =
             ui.allocate_exact_size(vec2(desired_width, height), Sense::hover());