- Currently gated by a setting in Editor Preferences..Graph Editors
- Alt+LMB Click on the spline to break the connection
- Ctrl+LMB Click on the spline to move the connection to a different pin
- Hover over the spline to highlight it
[CL 2483923 by Michael Noland in Main branch]
I fixed the crash found in the material editor, but discovered some rendering issues. Backing this out for now.
[CL 2412583 by Dan Oconnor in Main branch]
* Multicast delegate Add* calls now return FDelegateHandles, and Remove* calls are now all deprecated, except for a new Remove function which takes a FDelegateHandle.
* New FConsoleManager::RegisterConsoleVariableSink_Handle and UnregisterConsoleVariableSink_Handle functions which work in terms of FConsoleVariableSinkHandle.
* Timer calls which don't take FTimerHandles are deprecated.
* FTicker::AddTicker now returns an FDelegateHandle and is removed by an overloaded Remove function.
* DEFINE_ONLINE_DELEGATE* macros now define _Handle variants of the Add/Remove functions which return/take handles.
* Various other handle-based registration changes.
* Some unity build fixes.
* Some simplification of delegate code.
* Fixes for lots of existing code to use handle-based registration and unregistration.
#codereview robert.manuszewski
[CL 2400883 by Steve Robb in Main branch]
Introduces the concept of "Active Ticking" to allow Slate to go to sleep when there is no need to update the UI.
While asleep, Slate will skip the Tick & Paint pass for that frame entirely.
- There are TWO ways to "wake" Slate and cause a Tick/Paint pass:
1. Provide some sort of input (mouse movement, clicks, and key presses). Slate will always tick when the user is active.
- Therefore, if the logic in a given widget's Tick is only relevant in response to user action, there is no need to register an active tick.
2. Register an Active Tick. Currently this is an all-or-nothing situation, so if a single active tick needs to execute, all of Slate will be ticked.
- The purpose of an Active Tick is to allow a widget to "drive" Slate and guarantee a Tick/Paint pass in the absence of any user action.
- Examples include animation, async operations that update periodically, progress updates, loading bars, etc.
- An empty active tick is registered for viewports when they are real-time, so game project widgets are unaffected by this change and should continue to work as before.
- An Active Tick is registered by creating an FWidgetActiveTickDelegate and passing it to SWidget::RegisterActiveTick()
- There are THREE ways to unregister an active tick:
1. Return EActiveTickReturnType::StopTicking from the active tick function
2. Pass the FActiveTickHandle returned by RegisterActiveTick() to SWidget::UnregisterActiveTick()
3. Destroy the widget responsible for the active tick
- Sleeping is currently disabled, can be enabled with Slate.AllowSlateToSleep cvar
- There is currently a little buffer time during which Slate continues to tick following any input. Long-term, this is planned to be removed.
- The duration of the buffer can be adjusted using Slate.SleepBufferPostInput cvar (defaults to 1.0f)
- The FCurveSequence API has been updated to work with the active tick system
- Playing a curve sequence now requires that you pass the widget being animated by the sequence
- The active tick will automatically be registered on behalf of the widget and unregister when the sequence is complete
- GetLerpLooping() has been removed. Instead, pass true as the second param to Play() to indicate that the animation will loop. This causes the active tick to be registered indefinitely until paused or jumped to the start/end.
[CL 2391669 by Dan Hertzka in Main branch]
Added new widget overlay system for graph panels, designed to allow more flexibilty than the current brush-only implementation. This requred a small refactor to avoid the assumption that all child widgets of an SNodePanel are SNodes (and because there is no usable RTTI present).
Added index widget overlay to BT graph nodes.
Added flag to parent nodes to allow us to change the appearance of child nodes when another child is hovered.
TTP# 339733 - Editor: Behaviour Tree: Add better execution order indicators
reviewed by Lukasz.Furman
[CL 2226658 by Thomas Sarkanen in Main branch]
#TTP 334976 - BLUEPRINTS: Drag-dropping can still create nodes in read-only graphs (e.g., during PIE or when viewing an anim parent graph)
#Branch UE4
#Proj GraphEditor
#Add added SGraphPanel::IsGraphEditable so nodes and objects placed in the graph can easily determine if the graph is read only.
#Change Modified SGraphPanel::OnDragLeave to restore the tooltip if a FDecoratedDragDropOp has been modified to indicate that the graph is read only.
#Change Modified SGraphPanel::OnDragOver to change the icon on the tooltip to a lined circle if the graph is read only.
#Change Modified SGraphPanel::OnDrop to exit without changes if the graph is read only.
#Change Modified FGraphEditorDragDropAction to present feedback to the user if the drag drop target is invalid. this is activated by setting FGraphEditorDragDropAction::SetDropTargetValid, this just collpases the active icon and displays a lined circle with the same tooltip when set to false.
#Add added SGraphNode::IsNodeEditable to determine if the node is currently editable, based on an evaluation of the IsEditable attribute and the parent graphs IsGraphEditable.
#Change modified SGraphNode::OnDragOver to display a lined circle if the parent graph or the node is read only.
#Change modified SGraphNode::OnDrop to exit without changes if the parent graph or the node is read only.
#Change modified SGraphPin::OnDrop to exit without changes if the parent graph or the owner node is read only.
ReviewedBy Chris.Wood, Nick.Whiting
[CL 2109030 by Ben Cosh in Main branch]
- Clean up FDragConnection construction and add a factory function in SGraphPin to extend it for some pins
- Clean up arguments to FOnGetContextMenuFor in SGraphPanel
- Various modifications to SGraphPin to permit implementation of wire knots/reroute nodes
#codereview nick.whiting
[CL 2074801 by Michael Noland in Main branch]
This fixes ttp 331811 - The control+left drag click functionality in the material editor broke recently.
I've changed the preview connector pins to be stored as a handle (NodeGuid + PinName) so that we can reference them persistently across rebuilds of the graph
Reviewed by Matthew Griffin, Matt Kuhlenschmidt
[CL 2056263 by Andrew Rodham in Main branch]
