Update scrollViewContent margin, not ScrollView

examples/simple.rs

@@ -1,4 +1,4 @@
-use bevy::{prelude::*};
+use bevy::prelude::*;
 use bevy_inspector_egui::quick::WorldInspectorPlugin;
 use bevy_simple_scroll_view::*;
 
@@ -38,8 +38,7 @@ fn add_content(mut commands: Commands, q: Query<Entity, Added<ScrollViewContent>
     for e in q.iter() {
         commands.entity(e).with_children(|parent| {
             for _ in 0..10 {
-                parent.spawn(
+                parent.spawn(NodeBundle {
-                    NodeBundle {
                     style: Style {
                         width: Val::Px(200.0),
                         height: Val::Px(200.0),
@@ -51,8 +50,7 @@ fn add_content(mut commands: Commands, q: Query<Entity, Added<ScrollViewContent>
                     border_color: BORDER_COLOR_ACTIVE.into(),
                     background_color: BACKGROUND_COLOR.into(),
                     ..default()
-                    },
+                });
-                );
             }
         });
     }

src/lib.rs

@@ -59,12 +59,17 @@ pub fn create_scroll_view(mut commands: Commands, q: Query<Entity, Added<ScrollV
 
 fn input_mouse_pressed_move(
     mut motion_evr: EventReader<MouseMotion>,
-    mut q: Query<(Entity, &mut Style, &Interaction), With<ScrollViewport>>,
+    mut q: Query<(&Children, &Interaction), With<ScrollViewport>>,
+    mut content_q: Query<&mut Style, With<ScrollViewContent>>,
 ) {
     for evt in motion_evr.read() {
         info!("{:?}", evt);
-        for (_e, mut style, &interaction) in q.iter_mut() {
+        for (children, &interaction) in q.iter_mut() {
-            if interaction == Interaction::Pressed {
+            if interaction != Interaction::Pressed {
+                continue;
+            }
+            for &child in children.iter() {
+                if let Ok(mut style) = content_q.get_mut(child) {
                     style.top = match style.top {
                         Val::Px(px) => Val::Px(px + evt.delta.y),
                         _ => Val::Px(0.0),
@@ -73,6 +78,7 @@ fn input_mouse_pressed_move(
             }
         }
     }
+}
 
 fn scroll_events(
     mut scroll_evr: EventReader<MouseWheel>,