Make Position2D components editable in selection panel (#8357)

### Related

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Include links to any related issues/PRs in a bulleted list, for example:
* Closes #1234
* Part of #1337
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* Part of #8299 

### What

This adds a simple single line edit for position 2D. There is no
`speed_fn` because I think in most applications UI coordinates are
probably good unit (for example in graphs).



https://github.com/user-attachments/assets/2fad00c4-8e68-40fe-a474-32fa5806814e



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---------

Co-authored-by: Andreas Reich <andreas@rerun.io>

crates/viewer/re_component_ui/src/datatype_uis/mod.rs

@@ -20,6 +20,6 @@ pub use range1d::edit_view_range1d;
 pub use singleline_string::{
     display_name_ui, display_text_ui, edit_multiline_string, edit_singleline_string,
 };
-pub use vec::{edit_or_view_vec3d, edit_or_view_vec3d_raw};
+pub use vec::{edit_or_view_vec2d, edit_or_view_vec3d, edit_or_view_vec3d_raw};
 pub use view_id::view_view_id;
 pub use view_uuid::view_uuid;

crates/viewer/re_component_ui/src/datatype_uis/vec.rs

@@ -1,7 +1,20 @@
+use std::ops::RangeInclusive;
+
+use egui::NumExt as _;
 use re_types::datatypes;
 use re_viewer_context::MaybeMutRef;
 
-use super::float_drag::edit_f32_float_raw;
+pub fn edit_or_view_vec2d(
+    _ctx: &re_viewer_context::ViewerContext<'_>,
+    ui: &mut egui::Ui,
+    value: &mut MaybeMutRef<'_, impl std::ops::DerefMut<Target = datatypes::Vec2D>>,
+) -> egui::Response {
+    let mut value: MaybeMutRef<'_, datatypes::Vec2D> = match value {
+        MaybeMutRef::Ref(value) => MaybeMutRef::Ref(value),
+        MaybeMutRef::MutRef(value) => MaybeMutRef::MutRef(value),
+    };
+    edit_or_view_vec2d_raw(ui, &mut value)
+}
 
 pub fn edit_or_view_vec3d(
     _ctx: &re_viewer_context::ViewerContext<'_>,
@@ -12,50 +25,80 @@ pub fn edit_or_view_vec3d(
         MaybeMutRef::Ref(value) => MaybeMutRef::Ref(value),
         MaybeMutRef::MutRef(value) => MaybeMutRef::MutRef(value),
     };
-    edit_or_view_vec3d_raw_immutable(ui, &mut value)
+    edit_or_view_vec3d_raw(ui, &mut value)
 }
 
-// TODO(#6743): Since overrides are not yet taken into account, editing this value has no effect.
-//MaybeMutRef::MutRef(value) => MaybeMutRef::MutRef(&mut value[i]),
-fn edit_or_view_vec3d_raw_immutable(
-    ui: &mut egui::Ui,
-    value: &mut MaybeMutRef<'_, datatypes::Vec3D>,
-) -> egui::Response {
-    edit_or_view_vector_component_immutable(ui, value, 0)
-        | edit_or_view_vector_component_immutable(ui, value, 1)
-        | edit_or_view_vector_component_immutable(ui, value, 2)
+fn drag<'a>(value: &'a mut f32, range: RangeInclusive<f32>, suffix: &str) -> egui::DragValue<'a> {
+    let speed = (value.abs() * 0.01).at_least(0.001);
+    egui::DragValue::new(value)
+        .clamp_existing_to_range(false)
+        .range(range)
+        .speed(speed)
+        .suffix(suffix)
 }
 
-fn edit_or_view_vector_component_immutable(
+// TODO(#6743): Since overrides are not yet taken into account, editing this value has no effect.
+pub fn edit_or_view_vec2d_raw(
     ui: &mut egui::Ui,
-    value: &mut MaybeMutRef<'_, datatypes::Vec3D>,
-    i: usize,
+    value: &mut MaybeMutRef<'_, datatypes::Vec2D>,
 ) -> egui::Response {
-    let mut value: MaybeMutRef<'_, f32> = match value {
-        MaybeMutRef::Ref(value) => MaybeMutRef::Ref(&value[i]),
+    let x = value.0[0];
+    let y = value.0[1];
 
-        MaybeMutRef::MutRef(value) => MaybeMutRef::Ref(&value[i]),
-    };
-    edit_f32_float_raw(ui, &mut value, f32::MIN..=f32::MAX, "")
+    if let Some(value) = value.as_mut() {
+        let mut x_edit = x;
+        let mut y_edit = y;
+
+        let response_x = ui.add(drag(&mut x_edit, f32::MIN..=f32::MAX, ""));
+        let response_y = ui.add(drag(&mut y_edit, f32::MIN..=f32::MAX, ""));
+
+        let response = response_y | response_x;
+
+        if response.changed() {
+            *value = datatypes::Vec2D([x_edit, y_edit]);
+        }
+
+        response
+    } else {
+        ui.label(format!(
+            "[ {} , {} ]",
+            re_format::format_f32(x),
+            re_format::format_f32(y),
+        ))
+    }
 }
 
+// TODO(#6743): Since overrides are not yet taken into account, editing this value has no effect.
 pub fn edit_or_view_vec3d_raw(
     ui: &mut egui::Ui,
     value: &mut MaybeMutRef<'_, datatypes::Vec3D>,
 ) -> egui::Response {
-    edit_or_view_vector_component(ui, value, 0)
-        | edit_or_view_vector_component(ui, value, 1)
-        | edit_or_view_vector_component(ui, value, 2)
-}
+    let x = value.0[0];
+    let y = value.0[1];
+    let z = value.0[2];
 
-fn edit_or_view_vector_component(
-    ui: &mut egui::Ui,
-    value: &mut MaybeMutRef<'_, datatypes::Vec3D>,
-    i: usize,
-) -> egui::Response {
-    let mut value: MaybeMutRef<'_, f32> = match value {
-        MaybeMutRef::Ref(value) => MaybeMutRef::Ref(&value[i]),
-        MaybeMutRef::MutRef(value) => MaybeMutRef::MutRef(&mut value[i]),
-    };
-    edit_f32_float_raw(ui, &mut value, f32::MIN..=f32::MAX, "")
+    if let Some(value) = value.as_mut() {
+        let mut x_edit = x;
+        let mut y_edit = y;
+        let mut z_edit = z;
+
+        let response_x = ui.add(drag(&mut x_edit, f32::MIN..=f32::MAX, ""));
+        let response_y = ui.add(drag(&mut y_edit, f32::MIN..=f32::MAX, ""));
+        let response_z = ui.add(drag(&mut z_edit, f32::MIN..=f32::MAX, ""));
+
+        let response = response_y | response_x | response_z;
+
+        if response.changed() {
+            *value = datatypes::Vec3D([x_edit, y_edit, z_edit]);
+        }
+
+        response
+    } else {
+        ui.label(format!(
+            "[ {} , {} , {} ]",
+            re_format::format_f32(x),
+            re_format::format_f32(y),
+            re_format::format_f32(z),
+        ))
+    }
 }

crates/viewer/re_component_ui/src/lib.rs

@@ -28,9 +28,9 @@ mod zoom_level;
 
 use datatype_uis::{
     display_name_ui, display_text_ui, edit_bool, edit_f32_min_to_max_float, edit_f32_zero_to_max,
-    edit_f32_zero_to_one, edit_multiline_string, edit_or_view_vec3d, edit_singleline_string,
-    edit_ui_points, edit_view_enum, edit_view_enum_with_variant_available, edit_view_range1d,
-    view_uuid, view_view_id,
+    edit_f32_zero_to_one, edit_multiline_string, edit_or_view_vec2d, edit_or_view_vec3d,
+    edit_singleline_string, edit_ui_points, edit_view_enum, edit_view_enum_with_variant_available,
+    edit_view_range1d, view_uuid, view_view_id,
 };
 
 use re_types::{
@@ -40,8 +40,8 @@ use re_types::{
     components::{
         AggregationPolicy, AlbedoFactor, AxisLength, Color, DepthMeter, DrawOrder, FillMode,
         FillRatio, GammaCorrection, GraphType, ImagePlaneDistance, MagnificationFilter, MarkerSize,
-        Name, Opacity, Range1D, Scale3D, ShowLabels, StrokeWidth, Text, TransformRelation,
-        Translation3D, ValueRange,
+        Name, Opacity, Position2D, Range1D, Scale3D, ShowLabels, StrokeWidth, Text,
+        TransformRelation, Translation3D, ValueRange,
     },
     Component as _,
 };
@@ -114,6 +114,9 @@ pub fn create_component_ui_registry() -> re_viewer_context::ComponentUiRegistry
     registry.add_singleline_edit_or_view::<TransformRelation>(edit_view_enum);
     registry.add_singleline_edit_or_view::<ViewFit>(edit_view_enum);
 
+    // Vec2 components:
+    registry.add_singleline_edit_or_view::<Position2D>(edit_or_view_vec2d);
+
     // Vec3 components:
     registry.add_singleline_edit_or_view::<Translation3D>(edit_or_view_vec3d);
     registry.add_singleline_edit_or_view::<Scale3D>(edit_or_view_vec3d);