120 lines
4.3 KiB
C++
120 lines
4.3 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#include "Widgets/SCompoundWidget.h"
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#include "PropertyHandle.h"
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#include "IExternalImagePickerModule.h"
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/**
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* Delegate fired before an image has been copied
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* @param InChosenImage The path to the image that has been picked by the user.
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* @return true if the operation was successful
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*/
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DECLARE_DELEGATE_RetVal_OneParam(bool, FOnPreExternalImageCopy, const FString& /** InChosenImage */);
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/**
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* Delegate fired after an image has been copied
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* @param InChosenImage The path to the image that has been picked by the user.
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* @return true if the operation was successful
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*/
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DECLARE_DELEGATE_RetVal_OneParam(bool, FOnPostExternalImageCopy, const FString& /** InChosenImage */);
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/////////////////////////////////////////////////////
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// SExternalImageReference
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// This widget shows an external image preview of a per-project configurable image
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// (one where the engine provides a default, but each project may have its own override)
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class SHAREDSETTINGSWIDGETS_API SExternalImageReference : public SCompoundWidget
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{
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SLATE_BEGIN_ARGS(SExternalImageReference)
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: _FileDescription(NSLOCTEXT("SExternalImageReference", "FileDescription", "External Image"))
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, _MaxDisplaySize(400.0f, 400.0f)
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, _RequiredSize(-1, -1)
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, _DeleteTargetWhenDefaultChosen(false)
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, _GenerateImageVisibility(EVisibility::Hidden)
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, _GenerateImageToolTipText(NSLOCTEXT("SExternalImageReference", "GenerateImage", "Generate Image"))
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{}
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/** The description of the file, used in error messages/notifications */
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SLATE_ARGUMENT(FText, FileDescription)
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/** How big should we display the image? */
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SLATE_ARGUMENT(FVector2D, MaxDisplaySize)
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/** How big does the image need to be (any size is allowed if this is omitted) */
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SLATE_ARGUMENT(FIntPoint, RequiredSize)
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/** Delegate fired before an image has been copied */
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SLATE_ARGUMENT(FOnPreExternalImageCopy, OnPreExternalImageCopy)
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/** Delegate fired after an image has been copied */
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SLATE_ARGUMENT(FOnPostExternalImageCopy, OnPostExternalImageCopy)
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/** Delegate fired to get the path to start picking from. */
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SLATE_ARGUMENT(FOnGetPickerPath, OnGetPickerPath)
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/** A property handle to use if required */
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SLATE_ARGUMENT(TSharedPtr<class IPropertyHandle>, PropertyHandle)
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/** If true, the target image will be deleted if the default is chosen */
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SLATE_ARGUMENT(bool, DeleteTargetWhenDefaultChosen)
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/** File extensions allowed for the external image reference */
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SLATE_ARGUMENT(TArray<FString>, FileExtensions)
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/** If true, deletes the previous reference if the file extension changes */
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SLATE_ARGUMENT(bool, DeletePreviousTargetWhenExtensionChanges)
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/** Whether to show the generate image button */
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SLATE_ATTRIBUTE(EVisibility, GenerateImageVisibility)
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/** Tooltip for Generate Image button */
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SLATE_ARGUMENT(FText, GenerateImageToolTipText);
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/** Delegate fired when an Generate Image button is pressed */
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SLATE_EVENT(FOnClicked, OnGenerateImageClicked)
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SLATE_END_ARGS()
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public:
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void Construct(const FArguments& InArgs, const FString& InBaseFilename, const FString& InOverrideFilename);
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protected:
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/** Delegate handler for when an image is picked */
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bool HandleExternalImagePicked(const FString& InChosenImage, const FString& InTargetImage);
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protected:
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/** The image on disk that we will use if the override does not exist. */
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FString BaseFilename;
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/** The image on disk that the override image is stored as. */
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FString OverrideFilename;
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/** The description of the file in question, e.g. 'image' or 'icon', used for error reporting */
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FText FileDescription;
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/** Delegate fired before an image has been copied */
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FOnPreExternalImageCopy OnPreExternalImageCopy;
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/** Delegate fired after an image has been copied */
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FOnPostExternalImageCopy OnPostExternalImageCopy;
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/** A property handle to use if required */
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TSharedPtr<class IPropertyHandle> PropertyHandle;
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/** If true, the target image will be deleted if the default is chosen */
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bool bDeleteTargetWhenDefaultChosen;
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/** The extensions supported by this external reference */
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TArray<FString> Extensions;
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/** If true, the previous target image will be deleted if the file extension changes */
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bool bDeletePreviousTargetWhenExtensionChanges;
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};
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