116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Containers/Array.h"
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#include "Containers/UnrealString.h"
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#include "HAL/Platform.h"
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#include "IPropertyTypeCustomization.h"
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#include "Internationalization/Text.h"
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#include "Misc/Optional.h"
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#include "Templates/SharedPointer.h"
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#include "Types/SlateEnums.h"
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class IPropertyHandle;
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class SEditableTextBox;
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class SWidget;
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template <typename NumericType> struct INumericTypeInterface;
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class FMarginStructCustomization : public IPropertyTypeCustomization
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{
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public:
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static TSharedRef<IPropertyTypeCustomization> MakeInstance();
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FMarginStructCustomization()
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: bIsUsingSlider( false )
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{}
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/** IPropertyTypeCustomization interface */
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virtual void CustomizeHeader( TSharedRef<class IPropertyHandle> StructPropertyHandle, class FDetailWidgetRow& HeaderRow, IPropertyTypeCustomizationUtils& StructCustomizationUtils ) override;
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virtual void CustomizeChildren( TSharedRef<class IPropertyHandle> StructPropertyHandle, class IDetailChildrenBuilder& StructBuilder, IPropertyTypeCustomizationUtils& StructCustomizationUtils ) override;
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private:
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/**
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* Make the margin property widget
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*/
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TSharedRef<SEditableTextBox> MakePropertyWidget();
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/**
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* Make the widget for the specified property
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*
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* @param PropertyIndex The index of the child property to the make the widget for
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*/
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TSharedRef<SWidget> MakeChildPropertyWidget( int32 PropertyIndex) const;
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/**
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Get the margin property value as text
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*/
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FText GetMarginText() const;
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/**
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* Delegate to commit margin text
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*/
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void OnMarginTextCommitted( const FText& InText, ETextCommit::Type InCommitType );
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/**
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* Update the margin text from the margin property values
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*/
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FString GetMarginTextFromProperties() const;
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/**
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* Gets the value as a float for the provided property handle
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*
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* @param PropertyIndex The index of the child property to get the value from
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* @return The value or unset if it could not be accessed
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*/
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virtual TOptional<float> OnGetValue( int32 PropertyIndex ) const;
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/**
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* Called when the value is committed from the property editor
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*
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* @param NewValue The new value of the property as a float
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* @param CommitType How the value was committed (unused)
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* @param PropertyIndex The index of the child property that the new value is for
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*/
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virtual void OnValueCommitted( float NewValue, ETextCommit::Type CommitType, int32 PropertyIndex );
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/**
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* Called when the value is changed in the property editor
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*
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* @param NewValue The new value of the property as a float
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* @param PropertyIndex The index of the child property that the new value is for
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*/
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virtual void OnValueChanged( float NewValue, int32 PropertyIndex );
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/**
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* Called when a value starts to be changed by a slider
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*/
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void OnBeginSliderMovement();
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/**
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* Called when a value stops being changed by a slider
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*/
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void OnEndSliderMovement( float NewValue );
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/** Handle to the margin being customized */
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TSharedPtr<IPropertyHandle> StructPropertyHandle;
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/** Child property handles */
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TArray< TSharedRef<IPropertyHandle> > ChildPropertyHandles;
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/** True if this margin value working in uv space */
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bool bIsMarginUsingUVSpace;
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/** True if a value is being changed by dragging a slider */
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bool bIsUsingSlider;
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/** Margin text editable text box */
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TSharedPtr<SEditableTextBox> MarginEditableTextBox;
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/** Used to evaluate margin strings as mathematical expressions **/
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TSharedPtr< INumericTypeInterface<float> > NumericInterface;
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};
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