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Handle moving multiple nodes at the same time with box selection

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This also introduces a new NodeResponse to indicate node movement
This commit is contained in:
Setzer22 2022-11-12 16:22:42 +01:00
parent 14ca3b3b97
commit 7b70b706b5
1 changed files with 21 additions and 2 deletions
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23
egui_node_graph/src/editor_ui.rs
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@ -40,6 +40,10 @@ pub enum NodeResponse<UserResponse: UserResponseTrait, NodeData: NodeDataTrait>
},
/// Emitted when a node is interacted with, and should be raised
RaiseNode(NodeId),
MoveNode {
node: NodeId,
drag_delta: Vec2,
},
User(UserResponse),
}
@ -329,6 +333,17 @@ where
self.node_order.remove(old_pos);
self.node_order.push(*node_id);
}
NodeResponse::MoveNode { node, drag_delta } => {
self.node_positions[*node] += *drag_delta;
// Handle multi-node selection movement
if self.selected_nodes.contains(node) && self.selected_nodes.len() > 1 {
for n in self.selected_nodes.iter().copied() {
if n != *node {
self.node_positions[n] += *drag_delta;
}
}
}
}
NodeResponse::User(_) => {
// These are handled by the user code.
}
@ -767,8 +782,12 @@ where
);
// Movement
*self.position += window_response.drag_delta();
if window_response.drag_delta().length_sq() > 0.0 {
let drag_delta = window_response.drag_delta();
if drag_delta.length_sq() > 0.0 {
responses.push(NodeResponse::MoveNode {
node: self.node_id,
drag_delta,
});
responses.push(NodeResponse::RaiseNode(self.node_id));
}