feat: add slider widget with horizontal and vertical support

masonry/src/core/action.rs

@@ -22,6 +22,10 @@ pub enum Action {
     TextEntered(String),
     /// A checkbox was toggled.
     CheckboxToggled(bool),
+    /// Slider value changed.
+    SliderValueChanged(f64),
+    /// Slider editing state changed.
+    SliderEditingChanged(bool),
     // FIXME - This is a huge hack
     /// Other.
     Other(Box<dyn Any + Send>),
@@ -34,6 +38,8 @@ impl PartialEq for Action {
             (Self::TextChanged(l0), Self::TextChanged(r0)) => l0 == r0,
             (Self::TextEntered(l0), Self::TextEntered(r0)) => l0 == r0,
             (Self::CheckboxToggled(l0), Self::CheckboxToggled(r0)) => l0 == r0,
+            (Self::SliderValueChanged(l0), Self::SliderValueChanged(r0)) => l0 == r0,
+            (Self::SliderEditingChanged(l0), Self::SliderEditingChanged(r0)) => l0 == r0,
             // FIXME
             // (Self::Other(val_l), Self::Other(val_r)) => false,
             _ => false,
@@ -48,6 +54,13 @@ impl std::fmt::Debug for Action {
             Self::TextChanged(text) => f.debug_tuple("TextChanged").field(text).finish(),
             Self::TextEntered(text) => f.debug_tuple("TextEntered").field(text).finish(),
             Self::CheckboxToggled(b) => f.debug_tuple("CheckboxChecked").field(b).finish(),
+            Self::SliderValueChanged(value) => {
+                f.debug_tuple("SliderValueChanged").field(value).finish()
+            }
+            Self::SliderEditingChanged(editing) => f
+                .debug_tuple("SliderEditingChanged")
+                .field(editing)
+                .finish(),
             Self::Other(_) => write!(f, "Other(...)"),
         }
     }

masonry/src/theme.rs

@@ -57,6 +57,20 @@ pub const WIDGET_PADDING_VERTICAL: f64 = 10.0;
 pub const WIDGET_PADDING_HORIZONTAL: f64 = 8.0;
 pub const WIDGET_CONTROL_COMPONENT_PADDING: f64 = 4.0;
 
+// Slider theme constants
+pub const SLIDER_DEFAULT_WIDTH: f64 = 200.0;
+pub const SLIDER_DEFAULT_HEIGHT: f64 = 40.0;
+pub const SLIDER_BASE_TRACK_THICKNESS: f64 = 4.0;
+pub const SLIDER_TRACK_PADDING: f64 = 5.0;
+pub const SLIDER_THUMB_WIDTH: f64 = 12.0;
+pub const SLIDER_THUMB_HEIGHT: f64 = 20.0;
+pub const SLIDER_HOVER_GLOW_COLOR: Color = Color::from_rgba8(0xff, 0xff, 0xff, 0x32);
+pub const SLIDER_THUMB_RADIUS: f64 = 5.0;
+pub const SLIDER_TRACK_RADIUS: f64 = 2.0;
+pub const SLIDER_HOVER_GLOW_BLUR_RADIUS: f64 = 5.0;
+pub const SLIDER_HOVER_GLOW_SPREAD_RADIUS: f64 = 2.0;
+pub const SLIDER_STEP: f64 = 1.0;
+
 static DEBUG_COLOR: &[Color] = &[
     Color::from_rgb8(230, 25, 75),
     Color::from_rgb8(60, 180, 75),

masonry/src/widgets/mod.rs

@@ -22,6 +22,7 @@ mod prose;
 mod root_widget;
 mod scroll_bar;
 mod sized_box;
+mod slider;
 mod spinner;
 mod split;
 mod text_area;
@@ -42,6 +43,7 @@ pub use self::prose::Prose;
 pub use self::root_widget::RootWidget;
 pub use self::scroll_bar::ScrollBar;
 pub use self::sized_box::{Padding, SizedBox};
+pub use self::slider::Slider;
 pub use self::spinner::Spinner;
 pub use self::split::Split;
 pub use self::text_area::TextArea;