Revert "Allowing EnsoGL mouse to interact with more than 4096 sprites…

… at the same time. (enso-org#3351)" (enso-org#3368)

This reverts commit 546c333.

app/gui/view/graph-editor/src/component/breadcrumbs/project_name.rs

@@ -265,10 +265,9 @@ impl ProjectName {
 
             // === Mouse IO ===
 
-            mouse_down <- model.view.events.mouse_down.constant(());
             frp.source.is_hovered <+ bool(&model.view.events.mouse_out,
                                           &model.view.events.mouse_over);
-            frp.source.mouse_down <+ model.view.events.mouse_down.constant(());
+            frp.source.mouse_down <+ model.view.events.mouse_down;
 
             not_selected               <- frp.output.selected.map(|selected| !selected);
             mouse_over_if_not_selected <- model.view.events.mouse_over.gate(&not_selected);
@@ -281,7 +280,7 @@ impl ProjectName {
             );
             on_deselect <- not_selected.gate(&not_selected).constant(());
 
-            edit_click    <- mouse_down.gate(&frp.ide_text_edit_mode);
+            edit_click    <- model.view.events.mouse_down.gate(&frp.ide_text_edit_mode);
             start_editing <- any(edit_click,frp.input.start_editing);
             eval_ start_editing ({
                 text.set_focus(true);

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

@@ -12,7 +12,7 @@ use ensogl::application::Application;
 use ensogl::data::color;
 use ensogl::display;
 use ensogl::display::scene::Scene;
-use ensogl::gui::component::PointerTarget;
+use ensogl::gui::component::ShapeViewEvents;
 use ensogl_hardcoded_theme as theme;
 use nalgebra::Rotation2;
 
@@ -74,7 +74,7 @@ trait EdgeShape: display::Object {
     fn id(&self) -> display::object::Id {
         self.display_object().id()
     }
-    fn events(&self) -> &PointerTarget;
+    fn events(&self) -> &ShapeViewEvents;
     fn set_color(&self, color: color::Rgba);
     fn set_color_focus(&self, color: color::Rgba);
 
@@ -172,8 +172,8 @@ trait AnyEdgeShape {
     /// Return references to all `EdgeShape`s in this `AnyEdgeShape`.
     fn shapes(&self) -> Vec<&dyn EdgeShape>;
 
-    /// Connect the given `PointerTargetProxy` to the mouse events of all sub-shapes.
-    fn register_proxy_frp(&self, network: &frp::Network, frp: &PointerTargetProxy) {
+    /// Connect the given `ShapeViewEventsProxy` to the mouse events of all sub-shapes.
+    fn register_proxy_frp(&self, network: &frp::Network, frp: &ShapeViewEventsProxy) {
         for shape in &self.shapes() {
             let event = shape.events();
             let id = shape.id();
@@ -374,7 +374,7 @@ macro_rules! define_corner_start {
                     self.focus_split_angle.set(angle);
                 }
 
-                fn events(&self) -> &PointerTarget {
+                fn events(&self) -> &ShapeViewEvents {
                     &self.events
                 }
 
@@ -469,7 +469,7 @@ macro_rules! define_corner_end {
                     self.focus_split_angle.set(angle);
                 }
 
-                fn events(&self) -> &PointerTarget {
+                fn events(&self) -> &ShapeViewEvents {
                     &self.events
                 }
 
@@ -549,7 +549,7 @@ macro_rules! define_line {
                     self.focus_split_angle.set(angle);
                 }
 
-                fn events(&self) -> &PointerTarget {
+                fn events(&self) -> &ShapeViewEvents {
                     &self.events
                 }
 
@@ -621,7 +621,7 @@ macro_rules! define_arrow { () => {
                  self.focus_split_angle.set(angle);
             }
 
-            fn events(&self) -> &PointerTarget {
+            fn events(&self) -> &ShapeViewEvents {
                 &self.events
             }
 
@@ -752,7 +752,7 @@ macro_rules! define_components {
         pub struct $name {
             pub logger            : Logger,
             pub display_object    : display::object::Instance,
-            pub shape_view_events : Rc<Vec<PointerTarget>>,
+            pub shape_view_events : Rc<Vec<ShapeViewEvents>>,
             shape_type_map        : Rc<HashMap<display::object::Id,ShapeRole>>,
             $(pub $field : $field_type),*
         }
@@ -764,7 +764,7 @@ macro_rules! define_components {
                 let display_object = display::object::Instance::new(&logger);
                 $(let $field = <$field_type>::new(Logger::new_sub(&logger,stringify!($field)));)*
                 $(display_object.add_child(&$field);)*
-                let mut shape_view_events:Vec<PointerTarget> = Vec::default();
+                let mut shape_view_events:Vec<ShapeViewEvents> = Vec::default();
                 $(shape_view_events.push($field.events.clone_ref());)*
                 let shape_view_events = Rc::new(shape_view_events);
 
@@ -1021,7 +1021,7 @@ impl SemanticSplit {
 /// emit events via th internal `on_mouse_down`/`on_mouse_over`/`on_mouse_out` sources.
 #[derive(Clone, CloneRef, Debug)]
 #[allow(missing_docs)]
-pub struct PointerTargetProxy {
+pub struct ShapeViewEventsProxy {
     pub mouse_down: frp::Stream,
     pub mouse_over: frp::Stream,
     pub mouse_out:  frp::Stream,
@@ -1032,7 +1032,7 @@ pub struct PointerTargetProxy {
 }
 
 #[allow(missing_docs)]
-impl PointerTargetProxy {
+impl ShapeViewEventsProxy {
     pub fn new(network: &frp::Network) -> Self {
         frp::extend! { network
             on_mouse_over <- source();
@@ -1063,7 +1063,7 @@ pub struct Frp {
     pub set_color:       frp::Source<color::Lcha>,
 
     pub hover_position: frp::Source<Option<Vector2<f32>>>,
-    pub shape_events:   PointerTargetProxy,
+    pub shape_events:   ShapeViewEventsProxy,
 }
 
 impl Frp {
@@ -1080,7 +1080,7 @@ impl Frp {
             def set_disabled    = source();
             def set_color       = source();
         }
-        let shape_events = PointerTargetProxy::new(network);
+        let shape_events = ShapeViewEventsProxy::new(network);
         Self {
             source_width,
             source_height,

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

@@ -696,7 +696,7 @@ impl Node {
 
             // === Background Press ===
 
-            out.background_press <+ model.drag_area.events.mouse_down.constant(());
+            out.background_press <+ model.drag_area.events.mouse_down;
             out.background_press <+ model.input.on_background_press;
 
 

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

@@ -9,15 +9,12 @@ use ensogl::prelude::*;
 
 use crate::GraphEditorModelWithNetwork;
 use crate::NodeId;
-
 use enso_frp as frp;
 use ensogl::animation::easing::EndStatus::Normal;
 use ensogl::display::Scene;
 use ensogl::Animation;
 use ensogl::Easing;
 
-
-
 /// Describes the "speed" of growth/shrink animation.
 ///
 /// To determine the duration of the blending animation, we divide the length of the camera path by

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

@@ -635,7 +635,7 @@ impl Area {
 
                     let mouse_over_raw = port_shape.hover.events.mouse_over.clone_ref();
                     let mouse_out      = port_shape.hover.events.mouse_out.clone_ref();
-                    mouse_down_raw <- port_shape.hover.events.mouse_down.constant(());
+                    let mouse_down_raw = port_shape.hover.events.mouse_down.clone_ref();
 
 
                     // === Body Hover ===

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

@@ -403,7 +403,7 @@ impl PortShapeView {
         set_padding_right (this,t:f32)   { this.padding_right.set(t) }
     }
 
-    fn events(&self) -> &component::PointerTarget {
+    fn events(&self) -> &component::ShapeViewEvents {
         match self {
             Self::Single(t) => &t.events,
             Self::Multi(t) => &t.events,
@@ -525,7 +525,7 @@ impl Model {
             // === Mouse Event Handling ===
 
             frp.source.on_hover <+ bool(&events.mouse_out,&events.mouse_over);
-            frp.source.on_press <+ events.mouse_down.constant(());
+            frp.source.on_press <+ events.mouse_down;
 
 
             // === Opacity ===

app/gui/view/graph-editor/src/component/visualization/container.rs

@@ -443,7 +443,7 @@ impl ContainerModel {
     }
 
     /// Check if given mouse-event-target means this visualization.
-    fn is_this_target(&self, target: scene::PointerTargetId) -> bool {
+    fn is_this_target(&self, target: scene::PointerTarget) -> bool {
         self.view.overlay.is_this_target(target)
     }
 

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

@@ -394,16 +394,15 @@ impl ActionBar {
             frp.source.visualisation_selection <+ visualization_chooser.chosen_entry;
 
             let reset_position_icon = &model.icons.reset_position_icon.events;
-            reset_position_icon_down <- reset_position_icon.mouse_down.constant(());
-            frp.source.on_container_reset_position <+ reset_position_icon_down;
+            frp.source.on_container_reset_position <+ reset_position_icon.mouse_down;
 
             let drag_icon      = &model.icons.drag_icon.events;
-            start_dragging     <- drag_icon.mouse_down.constant(());
+            let start_dragging = drag_icon.mouse_down.clone_ref();
             end_dragging       <- mouse.up.gate(&frp.source.container_drag_state);
             should_drag        <- bool(&end_dragging,&start_dragging);
             frp.source.container_drag_state <+ should_drag;
 
-            show_reset_icon <- bool(&reset_position_icon_down,&start_dragging);
+            show_reset_icon <- bool(&reset_position_icon.mouse_down,&start_dragging);
             eval show_reset_icon((visibility) model.icons.set_reset_icon_visibility(*visibility));
         }
         self

app/gui/view/graph-editor/src/lib.rs

@@ -2623,14 +2623,33 @@ fn new_graph_editor(app: &Application) -> GraphEditor {
     // === Selection Target Redirection ===
 
     frp::extend! { network
-        let scene = model.scene();
-
-        mouse_up_target <- mouse.up_primary.map(f_!(model.scene().mouse.target.get()));
-        background_up   <= mouse_up_target.map(
-            |t| (t==&display::scene::PointerTargetId::Background).as_some(())
+        mouse_down_target <- mouse.down_primary.map(f_!(model.scene().mouse.target.get()));
+        mouse_up_target   <- mouse.up_primary.map(f_!(model.scene().mouse.target.get()));
+        background_up     <= mouse_up_target.map(
+            |t| (t==&display::scene::PointerTarget::Background).as_some(())
         );
 
-        eval_ scene.background.mouse_down (touch.background.down.emit(()));
+        eval mouse_down_target([touch,model](target) {
+            match target {
+                display::scene::PointerTarget::Background  => touch.background.down.emit(()),
+                display::scene::PointerTarget::Symbol {..} => {
+                    if let Some(target) = model.scene().shapes.get_mouse_target(*target) {
+                        target.mouse_down().emit(());
+                    }
+                }
+            }
+        });
+
+        eval mouse_up_target([model](target) {
+            match target {
+                display::scene::PointerTarget::Background  => {} // touch.background.up.emit(()),
+                display::scene::PointerTarget::Symbol {..} => {
+                    if let Some(target) = model.scene().shapes.get_mouse_target(*target) {
+                        target.mouse_up().emit(());
+                    }
+                }
+            }
+        });
     }
 
 

lib/rust/ensogl/component/selector/src/shape.rs

@@ -195,8 +195,8 @@ pub mod right_overflow {
 
 use enso_frp::Network;
 use ensogl_core::frp::io::Mouse;
-use ensogl_core::gui::component::PointerTarget;
 use ensogl_core::gui::component::ShapeView;
+use ensogl_core::gui::component::ShapeViewEvents;
 
 pub use super::frp::*;
 pub use super::model::*;
@@ -208,7 +208,7 @@ use ensogl_core::display::Scene;
 /// Dragging is ended by a mouse up.
 pub fn shape_is_dragged(
     network: &Network,
-    shape: &PointerTarget,
+    shape: &ShapeViewEvents,
     mouse: &Mouse,
 ) -> enso_frp::Stream<bool> {
     enso_frp::extend! { network
@@ -259,7 +259,7 @@ mod tests {
     fn test_shape_is_dragged() {
         let network = enso_frp::Network::new("TestNetwork");
         let mouse = enso_frp::io::Mouse::default();
-        let shape = PointerTarget::default();
+        let shape = ShapeViewEvents::default();
 
         let is_dragged = shape_is_dragged(&network, &shape, &mouse);
         let _watch = is_dragged.register_watch();

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

@@ -230,7 +230,7 @@ impl<Shape: ColorableShape + 'static> ToggleButton<Shape> {
 
             // === State ===
 
-            toggle <- any_(frp.toggle,icon.mouse_down);
+            toggle <- any(frp.toggle,icon.mouse_down);
             frp.source.state <+ frp.state.not().sample(&toggle);
             frp.source.state <+ frp.set_state;
 

lib/rust/ensogl/core/src/debug/stats.rs

@@ -185,16 +185,15 @@ macro_rules! gen_stats {
                 self.[<set _ $field>](value);
             }
 
-            // FIXME: saturating_add is proper solution, but even without it it should not crash, but it does. To be investigated.
             emit_if_integer!($field_type,
                 /// Increments field's value.
                 pub fn [<inc _ $field>](&self) {
-                    self.[<mod _ $field>](|t| t.saturating_add(1));
+                    self.[<mod _ $field>](|t| t + 1);
                 }
 
                 /// Decrements field's value.
                 pub fn [<dec _ $field>](&self) {
-                    self.[<mod _ $field>](|t| t.saturating_sub(1));
+                    self.[<mod _ $field>](|t| t - 1);
                 }
             );
 

lib/rust/ensogl/core/src/display/object/class.rs

@@ -1188,33 +1188,6 @@ impl<Host> Object<Host> for Any<Host> {
 
 
 
-// =========================
-// === UnsetParentOnDrop ===
-// =========================
-
-/// Wrapper that unsets parent of a display object when dropped. Please note that [`Instance`]
-/// implements [`CloneRef`], so it can still be alive even if this struct is dropped.
-#[derive(Debug, NoCloneBecauseOfCustomDrop)]
-pub struct UnsetParentOnDrop {
-    instance: Instance,
-}
-
-impl UnsetParentOnDrop {
-    /// Constructor.
-    pub fn new(instance: impl Into<Instance>) -> Self {
-        let instance = instance.into();
-        Self { instance }
-    }
-}
-
-impl Drop for UnsetParentOnDrop {
-    fn drop(&mut self) {
-        self.instance.unset_parent()
-    }
-}
-
-
-
 // =============
 // === Tests ===
 // =============