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Rework drag start

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This commit is contained in:
Adam
2026-01-26 18:35:32 -08:00
committed by Adam G
parent 5a1503fc98
commit 57fe9351f2
2 changed files with 60 additions and 64 deletions
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108
editor/src/messages/portfolio/document/node_graph/node_graph_message_handler.rs
View File

@@ -57,12 +57,11 @@ pub struct NodeGraphMessageHandler {
has_selection: bool,
widgets: [LayoutGroup; 2],
/// Used to add a transaction for the first node move when dragging.
begin_dragging: bool,
/// Used to prevent entering a nested network if the node is dragged after double clicking
node_has_moved_in_drag: bool,
/// If dragging the selected nodes, this stores the starting position both in viewport and node graph coordinates,
/// If dragging the selected nodes, this stores the current position of the node,
/// plus a flag indicating if it has been dragged since the mousedown began.
pub drag_start: Option<(DragStart, bool)>,
pub drag_start: Option<DragStart>,
// Store the selected chain nodes on drag start so they can be reconnected if shaken
pub drag_start_chain_nodes: Vec<NodeId>,
/// If dragging the background to create a box selection, this stores its starting point in node graph coordinates,
@@ -965,14 +964,9 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
// If this node is selected (whether from before or just now), prepare it for dragging
if updated_selected.contains(&clicked_id) {
let drag_start = DragStart {
start_x: node_graph_point.x,
start_y: node_graph_point.y,
round_x: 0,
round_y: 0,
};
let drag_start_position = IVec2::new((node_graph_point.x / 24.).round() as i32, (node_graph_point.y / 24.).round() as i32);
self.drag_start = Some((drag_start, false));
self.drag_start = Some(DragStart::No(drag_start_position));
let selected_chain_nodes = updated_selected
.iter()
.filter(|node_id| network_interface.is_chain(node_id, selection_network_path))
@@ -987,7 +981,6 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
.filter(|node_id| network_interface.is_chain(node_id, selection_network_path))
})
.collect::<Vec<_>>();
self.begin_dragging = true;
self.node_has_moved_in_drag = false;
self.update_node_graph_hints(responses);
}
@@ -1105,36 +1098,28 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
};
responses.add(FrontendMessage::UpdateWirePathInProgress { wire_path: Some(wire_path) });
}
} else if let Some((drag_start, dragged)) = &mut self.drag_start {
if drag_start.start_x != point.x || drag_start.start_y != point.y {
*dragged = true;
}
self.node_has_moved_in_drag = true;
if self.begin_dragging {
self.begin_dragging = false;
if ipp.keyboard.get(Key::Alt as usize) {
responses.add(NodeGraphMessage::DuplicateSelectedNodes);
// Duplicating sets a 2x2 offset, so shift the nodes back to the original position
responses.add(NodeGraphMessage::ShiftSelectedNodesByAmount {
graph_delta: IVec2::new(-2, -2),
rubber_band: false,
});
self.preview_on_mouse_up = None;
} else if let Some(drag_start) = &mut self.drag_start {
match drag_start {
DragStart::Yes => {
sync_selected_node_position_with_mouse(network_interface, breadcrumb_network_path, point, responses);
}
}
let mut graph_delta = IVec2::new(((point.x - drag_start.start_x) / 24.).round() as i32, ((point.y - drag_start.start_y) / 24.).round() as i32);
let previous_round_x = drag_start.round_x;
let previous_round_y = drag_start.round_y;
drag_start.round_x = graph_delta.x;
drag_start.round_y = graph_delta.y;
graph_delta.x -= previous_round_x;
graph_delta.y -= previous_round_y;
responses.add(NodeGraphMessage::ShiftSelectedNodesByAmount { graph_delta, rubber_band: true });
DragStart::No(start) => {
let mouse_position_grid_space = IVec2::new((point.x / 24.).round() as i32, (point.y / 24.).round() as i32);
if *start != mouse_position_grid_space {
*drag_start = DragStart::Yes;
if ipp.keyboard.get(Key::Alt as usize) {
responses.add(NodeGraphMessage::DuplicateSelectedNodes);
// Duplicating sets a 2x2 offset, so shift the nodes back to the original position
responses.add(NodeGraphMessage::ShiftSelectedNodesByAmount {
graph_delta: IVec2::new(-2, -2),
rubber_band: false,
});
self.preview_on_mouse_up = None;
}
sync_selected_node_position_with_mouse(network_interface, breadcrumb_network_path, point, responses);
}
}
};
self.update_node_graph_hints(responses);
} else if let Some((_, box_selection_dragged)) = &mut self.box_selection_start {
@@ -1204,7 +1189,7 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
self.preview_on_mouse_up = None;
}
if let Some(node_to_deselect) = self.deselect_on_pointer_up.take()
&& !self.drag_start.as_ref().is_some_and(|t| t.1)
&& self.drag_start.as_ref().is_some_and(|start| !start.dragged())
{
let mut new_selected_nodes = selected_nodes.selected_nodes_ref().clone();
new_selected_nodes.remove(node_to_deselect);
@@ -1268,7 +1253,7 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
}
}
// End of dragging a node
else if let Some((drag_start, _)) = &self.drag_start {
else if let Some(drag_start) = &self.drag_start {
self.shift_without_push = false;
// Reset all offsets to end the rubber banding while dragging
@@ -1280,8 +1265,7 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
// Only select clicked node if multiple are selected and they were not dragged
if let Some(select_if_not_dragged) = self.select_if_not_dragged {
let not_dragged = drag_start.start_x == point.x && drag_start.start_y == point.y;
if not_dragged
if !drag_start.dragged()
&& (selected_nodes.selected_nodes_ref().len() != 1
|| selected_nodes
.selected_nodes_ref()
@@ -1310,7 +1294,7 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
return;
};
// Check if a single node was dragged onto a wire and that the node was dragged onto the wire
if selected_nodes.selected_nodes_ref().len() == 1 && !self.begin_dragging {
if selected_nodes.selected_nodes_ref().len() == 1 && self.drag_start.as_ref().is_some_and(|drag_start| drag_start.dragged()) {
let selected_node_id = selected_nodes.selected_nodes_ref()[0];
let has_primary_output_connection = network_interface
.outward_wires(selection_network_path)
@@ -1422,7 +1406,6 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
}
self.drag_start = None;
self.begin_dragging = false;
self.box_selection_start = None;
self.wire_in_progress_from_connector = None;
@@ -1449,11 +1432,6 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
}
}
NodeGraphMessage::ShakeNode => {
let Some(drag_start) = &self.drag_start else {
log::error!("Drag start should be initialized when shaking a node");
return;
};
let Some(network_metadata) = network_interface.network_metadata(selection_network_path) else {
return;
};
@@ -1466,9 +1444,6 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
.inverse()
.transform_point2(viewport_location);
// Collect the distance to move the shaken nodes after the undo
let graph_delta = IVec2::new(((point.x - drag_start.0.start_x) / 24.).round() as i32, ((point.y - drag_start.0.start_y) / 24.).round() as i32);
// Undo to the state of the graph before shaking
responses.add(DocumentMessage::AbortTransaction);
@@ -1559,7 +1534,7 @@ impl<'a> MessageHandler<NodeGraphMessage, NodeGraphMessageContext<'a>> for NodeG
}
}
}
responses.add(NodeGraphMessage::ShiftSelectedNodesByAmount { graph_delta, rubber_band: false });
sync_selected_node_position_with_mouse(network_interface, breadcrumb_network_path, point, responses);
responses.add(NodeGraphMessage::RunDocumentGraph);
responses.add(NodeGraphMessage::SendGraph);
}
@@ -2761,8 +2736,8 @@ impl NodeGraphMessageHandler {
// A wire is in progress and its start and end connectors are set
let wiring = self.wire_in_progress_from_connector.is_some();
// Node gragging is in progress (having already moved at least one pixel from the mouse down position)
let dragging_nodes = self.drag_start.as_ref().is_some_and(|(_, dragged)| *dragged);
// Node dragging is in progress (having already moved at least one pixel from the mouse down position)
let dragging_nodes = self.drag_start.as_ref().is_some_and(|drag_start| drag_start.dragged());
// A box selection is in progress
let dragging_box_selection = self.box_selection_start.is_some_and(|(_, box_selection_dragged)| box_selection_dragged);
@@ -2809,7 +2784,6 @@ impl Default for NodeGraphMessageHandler {
has_selection: false,
widgets: [LayoutGroup::Row { widgets: Vec::new() }, LayoutGroup::Row { widgets: Vec::new() }],
drag_start: None,
begin_dragging: false,
node_has_moved_in_drag: false,
shift_without_push: false,
box_selection_start: None,
@@ -2840,7 +2814,6 @@ impl PartialEq for NodeGraphMessageHandler {
&& self.has_selection == other.has_selection
&& self.widgets == other.widgets
&& self.drag_start == other.drag_start
&& self.begin_dragging == other.begin_dragging
&& self.node_has_moved_in_drag == other.node_has_moved_in_drag
&& self.box_selection_start == other.box_selection_start
&& self.initial_disconnecting == other.initial_disconnecting
@@ -2850,3 +2823,20 @@ impl PartialEq for NodeGraphMessageHandler {
&& self.context_menu == other.context_menu
}
}
fn sync_selected_node_position_with_mouse(network_interface: &mut NodeNetworkInterface, breadcrumb_network_path: &[NodeId], mouse_position_node_graph_space: DVec2, responses: &mut VecDeque<Message>) {
let mouse_position_grid_space = IVec2::new((mouse_position_node_graph_space.x / 24.).round() as i32, (mouse_position_node_graph_space.y / 24.).round() as i32);
let Some(selected_nodes_bbox) = network_interface.selected_nodes_bounding_box(breadcrumb_network_path) else {
log::error!("Could not get selected_nodes_bounding_box when dragging");
return;
};
let mut selected_nodes_center = (selected_nodes_bbox[0] + selected_nodes_bbox[1]) / 2.;
// Add 1 to correct for floating point errors
selected_nodes_center += DVec2::ONE;
let selected_nodes_center_grid_space = IVec2::new((selected_nodes_center.x / 24.).round() as i32, (selected_nodes_center.y / 24.).round() as i32);
let graph_delta = mouse_position_grid_space - selected_nodes_center_grid_space;
if graph_delta != IVec2::ZERO {
responses.add(NodeGraphMessage::ShiftSelectedNodesByAmount { graph_delta, rubber_band: true });
}
}

16
editor/src/messages/portfolio/document/node_graph/utility_types.rs
View File

@@ -110,12 +110,18 @@ pub struct FrontendNodeType {
pub input_types: Vec<String>,
}
/// State to represent the grid space coordinate from which the pointer started the drag
/// Once the nodes have been dragged, it is toggled to the Yes variant
#[derive(Clone, Debug, PartialEq, serde::Serialize, serde::Deserialize, specta::Type)]
pub struct DragStart {
pub start_x: f64,
pub start_y: f64,
pub round_x: i32,
pub round_y: i32,
pub enum DragStart {
Yes,
No(IVec2),
}
impl DragStart {
pub fn dragged(&self) -> bool {
matches!(self, DragStart::Yes)
}
}
#[derive(Clone, Debug, PartialEq, serde::Serialize, serde::Deserialize, specta::Type)]