Add tooltip to ToggleButton

CHANGELOG.md

@@ -126,6 +126,7 @@
   shortened labels for entries with long module paths. When an option is
   selected from the dropdown, the necessary module imports are inserted,
   eliminating the need for fully qualified names.
+- [Icon buttons now have tooltips.][6035]
 
 #### EnsoGL (rendering engine)
 
@@ -176,12 +177,14 @@
   performed in a given frame][5895]. In particular, you can now inspect names of
   all symbols rendered in a given frame. You can also pause the performance
   monitor and inspect results recorded in the past.
+- [ToggleButtons can now have tooltips][6035].
 
 [3857]: https://github.com/enso-org/enso/pull/3857
 [3985]: https://github.com/enso-org/enso/pull/3985
 [4047]: https://github.com/enso-org/enso/pull/4047
 [4003]: https://github.com/enso-org/enso/pull/4003
 [5895]: https://github.com/enso-org/enso/pull/5895
+[6035]: https://github.com/enso-org/enso/pull/6035
 
 #### Enso Standard Library
 

app/gui/view/graph-editor/src/component/node/action_bar.rs

@@ -1,22 +1,26 @@
 //! Definition of the `ActionBar` component for the `visualization::Container`.
 
-
-
-pub mod icon;
-
 use crate::prelude::*;
+use ensogl::display::shape::*;
 
 use enso_config::ARGS;
 use enso_frp as frp;
+use ensogl::application::tooltip;
 use ensogl::application::Application;
 use ensogl::display;
-use ensogl::display::shape::*;
 use ensogl_component::toggle_button;
 use ensogl_component::toggle_button::ColorableShape;
 use ensogl_component::toggle_button::ToggleButton;
 use ensogl_hardcoded_theme as theme;
 
 
+// ==============
+// === Export ===
+// ==============
+
+pub mod icon;
+
+
 
 // ==================
 // === Constants  ===
@@ -89,11 +93,12 @@ struct Icons {
 }
 
 impl Icons {
-    fn new() -> Self {
+    fn new(app: &Application) -> Self {
         let display_object = display::object::Instance::new();
-        let freeze = ToggleButton::new();
-        let visibility = ToggleButton::new();
-        let skip = ToggleButton::new();
+        let freeze = ToggleButton::new(app, tooltip::Style::set_label("Freeze".to_owned()));
+        let visibility =
+            ToggleButton::new(app, tooltip::Style::set_label("Show preview".to_owned()));
+        let skip = ToggleButton::new(app, tooltip::Style::set_label("Skip".to_owned()));
         display_object.add_child(&visibility);
         if ARGS.groups.feature_preview.options.skip_and_freeze.value {
             display_object.add_child(&freeze);
@@ -136,7 +141,7 @@ impl Model {
         let scene = &app.display.default_scene;
         let display_object = display::object::Instance::new();
         let hover_area = hover_area::View::new();
-        let icons = Icons::new();
+        let icons = Icons::new(app);
         let shapes = compound::events::MouseEvents::default();
         let size = default();
         let styles = StyleWatch::new(&scene.style_sheet);
@@ -324,3 +329,34 @@ impl display::Object for ActionBar {
         self.model.display_object()
     }
 }
+
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_tooltips() {
+        let app = Application::new("root");
+        let action_bar = ActionBar::new(&app);
+        let visibility_icon = &action_bar.model.icons.visibility;
+
+        // By default, the tooltip shouldn't be shown
+        assert_eq!(app.frp.tooltip.value().content(), None);
+
+        // Move the mouse over the visibility button
+        visibility_icon.view().events.mouse_over.emit(());
+
+        // We expect the button to be hovered by the mouse
+        assert!(visibility_icon.frp.is_hovered.value());
+
+        // We expect the tooltip to be shown now
+        assert_eq!(app.frp.tooltip.value().content(), Some("Show preview"));
+
+        // Move the mouse away again
+        visibility_icon.view().events.mouse_out.emit(());
+
+        // We expect the tooltip to be gone
+        assert_eq!(app.frp.tooltip.value().content(), None);
+    }
+}

app/gui/view/graph-editor/src/component/profiling.rs

@@ -6,6 +6,7 @@ use ensogl::display::shape::*;
 use crate::view;
 
 use enso_frp as frp;
+use ensogl::application::tooltip;
 use ensogl::application::Application;
 use ensogl::data::color;
 use ensogl::display;
@@ -148,7 +149,9 @@ impl Button {
         let frp = Frp::new();
         let network = &frp.network;
 
-        let button = ToggleButton::<icon::Shape>::new();
+        let tooltip_style = tooltip::Style::set_label("Profile".to_owned())
+            .with_placement(tooltip::Placement::Left);
+        let button = ToggleButton::<icon::Shape>::new(app, tooltip_style);
         scene.layers.panel.add(&button);
         button.set_visibility(true);
         button.frp.set_size(Vector2(32.0, 32.0));

lib/rust/ensogl/component/toggle-button/src/lib.rs

@@ -21,6 +21,8 @@
 use ensogl_core::prelude::*;
 
 use enso_frp as frp;
+use ensogl_core::application::tooltip;
+use ensogl_core::application::Application;
 use ensogl_core::data::color;
 use ensogl_core::display;
 use ensogl_core::display::shape::system::Shape;
@@ -202,27 +204,28 @@ pub struct ToggleButton<S: Shape> {
     model:   Rc<Model<S>>,
 }
 
-impl<Shape: ColorableShape + 'static> Default for ToggleButton<Shape> {
-    fn default() -> Self {
-        let frp = Frp::new();
-        let model = Rc::new(Model::<Shape>::new());
-        Self { frp, model }.init_frp()
-    }
-}
-
 impl<Shape: ColorableShape + 'static> ToggleButton<Shape> {
     /// Constructor.
-    pub fn new() -> Self {
-        default()
+    pub fn new(app: &Application, tooltip_style: tooltip::Style) -> Self {
+        let frp = Frp::new();
+        let model = Rc::new(Model::<Shape>::new());
+        Self { frp, model }.init_frp(app, tooltip_style)
     }
 
-    fn init_frp(self) -> Self {
+    fn init_frp(self, app: &Application, tooltip_style: tooltip::Style) -> Self {
         let network = &self.frp.network;
         let frp = &self.frp;
         let model = &self.model;
         let color = color::Animation::new(network);
         let icon = &model.icon.events;
 
+        // Explicitly define the tooltip placement if the default was used, to ensure that, when
+        // multiple tooltips are being used, we always override to the one we want.
+        let tooltip_style = {
+            let placement = tooltip_style.placement().unwrap_or_default();
+            tooltip_style.with_placement(placement)
+        };
+
         frp::extend! { network
 
              // === Input Processing ===
@@ -241,16 +244,16 @@ impl<Shape: ColorableShape + 'static> ToggleButton<Shape> {
 
             frp.source.mouse_over <+ icon.mouse_over;
             frp.source.mouse_out  <+ icon.mouse_out;
+            frp.source.is_hovered <+ bool(&icon.mouse_out,&icon.mouse_over);
+            frp.source.is_pressed <+ bool(&icon.mouse_up_primary,&icon.mouse_down_primary);
 
 
             // === Color ===
 
             invisible <- frp.set_visibility.on_false().constant(0.0);
             color.target_alpha <+ invisible;
 
-            frp.source.visible    <+ frp.set_visibility;
-            frp.source.is_hovered <+ bool(&icon.mouse_out,&icon.mouse_over);
-            frp.source.is_pressed <+ bool(&icon.mouse_up_primary,&icon.mouse_down_primary);
+            frp.source.visible <+ frp.set_visibility;
 
             button_state <- all_with4(&frp.visible,&frp.state,&frp.is_hovered,&frp.is_pressed,
                 |a,b,c,d| ButtonState::new(*a,*b,*c,*d));
@@ -260,6 +263,18 @@ impl<Shape: ColorableShape + 'static> ToggleButton<Shape> {
 
             color.target <+ color_target;
             eval color.value ((color) model.icon.set_color(color.into()));
+
+
+            // === Tooltip ===
+
+            tooltip <- frp.is_hovered.map(move |is_hovered| {
+                if *is_hovered {
+                    tooltip_style.clone()
+                } else {
+                    tooltip::Style::unset_label()
+                }
+            });
+            app.frp.set_tooltip <+ tooltip;
         }
 
         frp.set_state.emit(false);