137 lines
5.1 KiB
C++
137 lines
5.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CurveEditorCurveDrawParamsCache.h"
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#include "Containers/Array.h"
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#include "Containers/ArrayView.h"
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#include "HAL/Platform.h"
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#include "ICurveEditorDragOperation.h"
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#include "Input/CursorReply.h"
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#include "Input/Reply.h"
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#include "Layout/Margin.h"
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#include "Math/Vector2D.h"
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#include "Misc/Optional.h"
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#include "Templates/SharedPointer.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#include "Widgets/SBoxPanel.h"
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#define UE_API CURVEEDITOR_API
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class FCurveEditor;
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class FPaintArgs;
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class FSlateRect;
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class FSlateWindowElementList;
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class FWidgetStyle;
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class ITimeSliderController;
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class SCurveEditorView;
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class SRetainerWidget;
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struct FCurveEditorToolID;
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struct FFocusEvent;
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struct FGeometry;
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struct FKeyEvent;
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struct FPointerEvent;
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/**
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* Curve editor widget that reflects the state of an FCurveEditor
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*/
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class SCurveEditorViewContainer : public SVerticalBox
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{
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SLATE_BEGIN_ARGS(SCurveEditorViewContainer)
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: _MinimumPanelHeight(300.0f)
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{}
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/** Optional Time Slider Controller which allows us to synchronize with an externally controlled Time Slider */
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SLATE_ARGUMENT(TSharedPtr<ITimeSliderController>, ExternalTimeSliderController)
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/** The minimum height for this container panel. */
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SLATE_ARGUMENT(float, MinimumPanelHeight)
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SLATE_END_ARGS()
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/**
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* Construct a new curve editor panel widget
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*/
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UE_API void Construct(const FArguments& InArgs, TSharedRef<FCurveEditor> InCurveEditor);
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TArrayView<const TSharedPtr<SCurveEditorView>> GetViews() const { return Views; }
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UE_API void AddView(TSharedRef<SCurveEditorView> ViewToAdd);
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UE_API void Clear();
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/** Invoked when any of the views has invoked FCurveModel::HasChangedAndResetTest, and it returned true. */
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UE::CurveEditor::FOnCurveHasChangedExternally& OnCurveHasChangedExternally() { return OnCurveHasChangedExternallyDelegate; }
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private:
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// SWidget Interface
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UE_API virtual int32 OnPaint(const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled) const override;
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UE_API virtual void Tick(const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime) override;
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UE_API virtual FVector2D ComputeDesiredSize(float) const;
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UE_API virtual bool ComputeVolatility() const override;
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// ~SWidget Interface
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/*~ Mouse interaction */
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UE_API virtual FReply OnPreviewMouseButtonDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
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UE_API virtual FReply OnMouseButtonDown(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
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UE_API virtual FReply OnMouseButtonUp(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
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UE_API virtual FReply OnMouseMove(const FGeometry& MyGeometry, const FPointerEvent& MouseEvent) override;
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UE_API virtual void OnFinishedPointerInput() override;
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UE_API virtual FReply OnMouseButtonDoubleClick(const FGeometry& InMyGeometry, const FPointerEvent& InMouseEvent) override;
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UE_API virtual void OnFocusLost(const FFocusEvent& InFocusEvent) override;
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UE_API virtual FCursorReply OnCursorQuery(const FGeometry& MyGeometry, const FPointerEvent& CursorEvent) const override;
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UE_API virtual void OnMouseCaptureLost(const FCaptureLostEvent& CaptureLostEvent) override;
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virtual bool SupportsKeyboardFocus() const override { return true; }
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UE_API virtual FReply OnKeyDown(const FGeometry& MyGeometry, const FKeyEvent& InKeyEvent) override;
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UE_API virtual FReply OnKeyUp(const FGeometry& MyGeometry, const FKeyEvent& InKeyEvent) override;
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private:
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UE_API FMargin GetSlotPadding(int32 SlotIndex) const;
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UE_API void OnCurveEditorToolChanged(FCurveEditorToolID InToolId);
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UE_API void ExpandInputBounds(float NewWidth);
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UE_API bool IsScrubTimeKeyEvent(const FKeyEvent& InKeyEvent);
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void BroadcastOnCurveHasChangedExternally(const FCurveModelID& InCurveModelId) const;
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private:
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/** The curve editor pointer */
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TSharedPtr<FCurveEditor> CurveEditor;
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/** Optional time slider controller */
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TSharedPtr<ITimeSliderController> TimeSliderController;
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/** (Optional) the current drag operation */
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TOptional<FCurveEditorDelayedDrag> DragOperation;
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/** Whether DragOperation needs to have OnFinishedPointerInput called this tick. */
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bool bHadMouseMovesThisTick = false;
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/** Array of views whose cache may need to be updated and may need their height updating on tick. */
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TArray<TSharedPtr<SCurveEditorView>> Views;
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/** Possible pointer to a retainer widget that we may need to force update*/
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TSharedPtr<SRetainerWidget> RetainerWidget;
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/** Invoked when any of the views has invoked FCurveModel::HasChangedAndResetTest, and it returned true. */
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UE::CurveEditor::FOnCurveHasChangedExternally OnCurveHasChangedExternallyDelegate;
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/**
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* Whether or not this widget caught an OnMouseDown notification
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* Used to check if the selection should be cleared
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*/
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bool bCaughtMouseDown;
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/** The minimum height for this container panel. **/
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float MinimumPanelHeight;
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/** Whether or not we are scrubbing time*/
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bool bIsScrubbingTime = false;
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};
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#undef UE_API
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