devbox
Cpp五条
这个屌丝很懒，什么也没留下！
关注作者
热门标签
热门文章
当前位置:   article > 正文

UE5 c++将自定义UserWdiget添加到对应菜单栏_c++ uuserwidget

作者：Cpp五条 | 2024-05-18 06:46:49

赞

踩

c++ uuserwidget

前言：

为了实现与UserWidget一致的右键添加，便有了此章
注：这里使用的是UE5.3

目标内容：

在这里插入图片描述

这里可以参考UserWidget的源码，拷贝一份属于自己的就ok（本篇章只是全改成了属于自己的CommonUserWidget）

Runtime模块需要添加内容

首先创建一份自己Runtime模块的对象，我这取名是UCommonUserWidget

.h

#pragma once

#include "Blueprint/UserWidget.h"
#include "CommonUserWidget.generated.h"

UCLASS(BlueprintType, Blueprintable)
class DIVINEPROLOGUE_API UCommonUserWidget : public UUserWidget
{
	GENERATED_BODY()
public:
	}
};

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12

主要实现内容是：UFactory
这里需要创建一个Editor模块，添加以下代码：

.h

//这个创建是因为本着改了都改，就创建了一份
#pragma once
#include "WidgetBlueprint.h"
#include "CommonWidgetBlueprint.generated.h"

/**
 * The widget blueprint enables extending UCommonWidgetBlueprint the user extensible UWidget.
 */
UCLASS(BlueprintType)
class UCommonWidgetBlueprint : public UWidgetBlueprint
{
	GENERATED_BODY()
public:
	UCommonWidgetBlueprint(){}
};

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15

.h

// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Templates/SubclassOf.h"
#include "Factories/Factory.h"
#include "Engine/Blueprint.h"
#include "CommonUserWidgetFactory.generated.h"

UCLASS(HideCategories=Object, MinimalAPI)
class UCommonUserWidgetFactory : public UFactory
{
	GENERATED_UCLASS_BODY()

	// The type of blueprint that will be created
	UPROPERTY(EditAnywhere, Category=WidgetBlueprintFactory)
	TEnumAsByte<enum EBlueprintType> BlueprintType;

	// The parent class of the created blueprint
	UPROPERTY(EditAnywhere, Category=WidgetBlueprintFactory, meta=(AllowAbstract = ""))
	TSubclassOf<class UUserWidget> ParentClass;

	//~ Begin UFactory Interface
	virtual bool ConfigureProperties() override;
	virtual bool ShouldShowInNewMenu() const override;
	virtual UObject* FactoryCreateNew(UClass* Class, UObject* InParent, FName Name, EObjectFlags Flags, UObject* Context, FFeedbackContext* Warn, FName CallingContext) override;
	virtual UObject* FactoryCreateNew(UClass* Class, UObject* InParent, FName Name, EObjectFlags Flags, UObject* Context, FFeedbackContext* Warn) override;
	//~ Begin UFactory Interface	

	private:
	UPROPERTY(Transient)
	TObjectPtr<UClass> RootWidgetClass;
};

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35

.cpp

// Copyright Epic Games, Inc. All Rights Reserved.

#include "CommonUserWidgetFactory.h"
#include "UObject/Interface.h"
#include "Misc/MessageDialog.h"
#include "Blueprint/UserWidget.h"
#include "Blueprint/WidgetBlueprintGeneratedClass.h"
#include "WidgetBlueprint.h"
#include "Kismet2/KismetEditorUtilities.h"
#include "Modules/ModuleManager.h"
#include "UMGEditorModule.h"

#include "Blueprint/WidgetTree.h"
#include "UMGEditorProjectSettings.h"
#include "ClassViewerModule.h"
#include "Kismet2/SClassPickerDialog.h"
#include "ClassViewerFilter.h"
#include "CommonUserWidget.h"
#include "CommonWidgetBlueprint.h"
#include "Components/CanvasPanel.h"

#define LOCTEXT_NAMESPACE "UCommonUserWidgetFactory"

/*------------------------------------------------------------------------------
	UCommonUserWidgetFactory implementation.
------------------------------------------------------------------------------*/

class FWidgetClassFilter : public IClassViewerFilter
{
public:
	/** All children of these classes will be included unless filtered out by another setting. */
	TSet <const UClass*> AllowedChildrenOfClasses;

	/** Disallowed class flags. */
	EClassFlags DisallowedClassFlags;

	virtual bool IsClassAllowed(const FClassViewerInitializationOptions& InInitOptions, const UClass* InClass, TSharedRef< FClassViewerFilterFuncs > InFilterFuncs) override
	{
		return !InClass->HasAnyClassFlags(DisallowedClassFlags)
			&& InFilterFuncs->IfInChildOfClassesSet(AllowedChildrenOfClasses, InClass) != EFilterReturn::Failed;
	}
	
	virtual bool IsUnloadedClassAllowed(const FClassViewerInitializationOptions& InInitOptions, const TSharedRef< const IUnloadedBlueprintData > InUnloadedClassData, TSharedRef< FClassViewerFilterFuncs > InFilterFuncs) override
	{
		return !InUnloadedClassData->HasAnyClassFlags(DisallowedClassFlags)
			&& InFilterFuncs->IfInChildOfClassesSet(AllowedChildrenOfClasses, InUnloadedClassData) != EFilterReturn::Failed;
	}

};

UCommonUserWidgetFactory::UCommonUserWidgetFactory(const FObjectInitializer& ObjectInitializer)
	: Super(ObjectInitializer)
{
	bCreateNew = true;
	bEditAfterNew = true;
	SupportedClass = UCommonWidgetBlueprint::StaticClass();
	ParentClass = nullptr;
}

bool UCommonUserWidgetFactory::ConfigureProperties()
{
	if (GetDefault<UUMGEditorProjectSettings>()->bUseUserWidgetParentClassViewerSelector || GetDefault<UUMGEditorProjectSettings>()->bUseUserWidgetParentDefaultClassViewerSelector)
	{
		FClassViewerModule& ClassViewerModule = FModuleManager::LoadModuleChecked<FClassViewerModule>("ClassViewer");

		// Fill in options
		FClassViewerInitializationOptions Options;
		Options.DisplayMode = EClassViewerDisplayMode::Type::TreeView;
		Options.Mode = EClassViewerMode::ClassPicker;
		Options.bShowNoneOption = false;
		Options.bExpandAllNodes = true;
		Options.bShowDefaultClasses = GetDefault<UUMGEditorProjectSettings>()->bUseUserWidgetParentDefaultClassViewerSelector;
		Options.bShowClassesViewer = GetDefault<UUMGEditorProjectSettings>()->bUseUserWidgetParentClassViewerSelector;

		TSharedPtr<FWidgetClassFilter> Filter = MakeShareable(new FWidgetClassFilter);
		Options.ClassFilters.Add(Filter.ToSharedRef());

		const TArray<TSoftClassPtr<UUserWidget>>& FavoriteWidgetParentClasses = GetDefault<UUMGEditorProjectSettings>()->FavoriteWidgetParentClasses;
		for (int32 Index = 0; Index < FavoriteWidgetParentClasses.Num(); ++Index)
		{
			UClass* FavoriteWidgetParentClass = FavoriteWidgetParentClasses[Index].LoadSynchronous();
			if (FavoriteWidgetParentClass && FavoriteWidgetParentClass->IsChildOf(UCommonUserWidget::StaticClass()))
			{
				if (!Options.ExtraPickerCommonClasses.Contains(FavoriteWidgetParentClass))
				{
					Options.ExtraPickerCommonClasses.Add(FavoriteWidgetParentClass);
				}
			}
		}

		if (Options.ExtraPickerCommonClasses.Num() == 0)
		{
			Options.ExtraPickerCommonClasses.Add(UCommonUserWidget::StaticClass());
		}

		Filter->DisallowedClassFlags = CLASS_Deprecated | CLASS_NewerVersionExists | CLASS_Hidden | CLASS_HideDropDown;
		Filter->AllowedChildrenOfClasses.Add(UCommonUserWidget::StaticClass());

		const FText TitleText = LOCTEXT("CreateCommonWidgetBlueprint", "Pick Parent Class for New  Widget Blueprint");

		UClass* ChosenParentClass = nullptr;
		bool isSuccessful = SClassPickerDialog::PickClass(TitleText, Options, ChosenParentClass, UCommonUserWidget::StaticClass());
		ParentClass = ChosenParentClass ? ChosenParentClass : UCommonUserWidget::StaticClass();

		if (!isSuccessful)
		{
			return false;
		}
	}

	if (GetDefault<UUMGEditorProjectSettings>()->bUseWidgetTemplateSelector)
	{
		// Load the classviewer module to display a class picker
		FClassViewerModule& ClassViewerModule = FModuleManager::LoadModuleChecked<FClassViewerModule>("ClassViewer");

		// Fill in options
		FClassViewerInitializationOptions Options;
		Options.Mode = EClassViewerMode::ClassPicker;
		Options.bShowNoneOption = true;

		TArray<TSoftClassPtr<UPanelWidget>> CommonRootWidgetClasses = GetDefault <UUMGEditorProjectSettings>()->CommonRootWidgetClasses;
		for (int32 Index = 0; Index < CommonRootWidgetClasses.Num(); ++Index)
		{
			UClass* PanelWidgetClass = CommonRootWidgetClasses[Index].LoadSynchronous();
			if (PanelWidgetClass && PanelWidgetClass->IsChildOf(UPanelWidget::StaticClass()))
			{
				if (!Options.ExtraPickerCommonClasses.Contains(PanelWidgetClass))
				{
					Options.ExtraPickerCommonClasses.Add(PanelWidgetClass);
				}
			}
		}

		if (Options.ExtraPickerCommonClasses.Num() == 0)
		{
			Options.ExtraPickerCommonClasses.Add(UCanvasPanel::StaticClass());
		}

		TSharedPtr<FWidgetClassFilter> Filter = MakeShareable(new FWidgetClassFilter);
		Options.ClassFilters.Add(Filter.ToSharedRef());

		Filter->DisallowedClassFlags = CLASS_Abstract | CLASS_Deprecated | CLASS_NewerVersionExists;
		Filter->AllowedChildrenOfClasses.Add(UPanelWidget::StaticClass());

		const FText TitleText = LOCTEXT("CreateRootWidgetBlueprint", "Pick Root Widget for New Widget Blueprint");
		return SClassPickerDialog::PickClass(TitleText, Options, static_cast<UClass*&>(RootWidgetClass), UPanelWidget::StaticClass());

	}
	return true;
}

bool UCommonUserWidgetFactory::ShouldShowInNewMenu() const
{
	return true;
}

UObject* UCommonUserWidgetFactory::FactoryCreateNew(UClass* Class, UObject* InParent, FName Name, EObjectFlags Flags, UObject* Context, FFeedbackContext* Warn, FName CallingContext)
{
	// Make sure we are trying to factory a Anim Blueprint, then create and init one
	check(Class->IsChildOf(UCommonWidgetBlueprint::StaticClass()));

	UClass* CurrentParentClass = ParentClass;
	if (CurrentParentClass == nullptr)
	{
		CurrentParentClass = UCommonUserWidget::StaticClass();
	}

	// If they selected an interface, force the parent class to be UInterface
	if (BlueprintType == BPTYPE_Interface)
	{
		CurrentParentClass = UInterface::StaticClass();
	}

	if ( (CurrentParentClass == nullptr) || !FKismetEditorUtilities::CanCreateBlueprintOfClass(CurrentParentClass) || !CurrentParentClass->IsChildOf(UCommonUserWidget::StaticClass()) )
	{
		FFormatNamedArguments Args;
		Args.Add( TEXT("ClassName"), CurrentParentClass ? FText::FromString( CurrentParentClass->GetName()) : LOCTEXT("Null", "(null)") );
		FMessageDialog::Open( EAppMsgType::Ok, FText::Format( LOCTEXT("CannotCreateCommonWidgetBlueprint", "Cannot create a Common Widget Blueprint based on the class '{ClassName}'."), Args ) );
		return nullptr;
	}
	else
	{
		if (!GetDefault<UUMGEditorProjectSettings>()->bUseWidgetTemplateSelector)
		{
			RootWidgetClass = GetDefault<UUMGEditorProjectSettings>()->DefaultRootWidget;
		}

		UCommonWidgetBlueprint* NewBP = CastChecked<UCommonWidgetBlueprint>(FKismetEditorUtilities::CreateBlueprint(CurrentParentClass, InParent, Name, BlueprintType, UCommonWidgetBlueprint::StaticClass(), UWidgetBlueprintGeneratedClass::StaticClass(), CallingContext));

		// Create the desired root widget specified by the project
		if ( NewBP->WidgetTree->RootWidget == nullptr )
		{
			if (TSubclassOf<UPanelWidget> RootWidgetPanel = RootWidgetClass)
			{
				UWidget* Root = NewBP->WidgetTree->ConstructWidget<UWidget>(RootWidgetPanel);
				NewBP->WidgetTree->RootWidget = Root;
			}
		}

		{
			IUMGEditorModule::FWidgetBlueprintCreatedArgs Args;
			Args.ParentClass = CurrentParentClass;
			Args.Blueprint = NewBP;

			IUMGEditorModule& UMGEditor = FModuleManager::LoadModuleChecked<IUMGEditorModule>("UMGEditor");
			UMGEditor.OnWidgetBlueprintCreated().Broadcast(Args);
		}

		return NewBP;
	}
}

UObject* UCommonUserWidgetFactory::FactoryCreateNew(UClass* Class, UObject* InParent, FName Name, EObjectFlags Flags, UObject* Context, FFeedbackContext* Warn)
{
	return FactoryCreateNew(Class, InParent, Name, Flags, Context, Warn, NAME_None);
}

#undef LOCTEXT_NAMESPACE

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218

这样运行起来之后，会发现右键内容已经有了但是，名字不对，类型也不对，但是已经能正常创建出来了，因为我们还需要创建一个UAssetDefinitionDefault
在这里插入图片描述
在这里插入图片描述

.h

// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once
#include "CoreMinimal.h"
#include "AssetDefinitionDefault.h"

#include "AssetDefinition_CommonWidgetBlueprint.generated.h"

UCLASS()
class UAssetDefinition_CommonWidgetBlueprint : public UAssetDefinitionDefault
{
	GENERATED_BODY()

public:
	UAssetDefinition_CommonWidgetBlueprint();
	virtual ~UAssetDefinition_CommonWidgetBlueprint() override;
	
	// UAssetDefinition Begin
	virtual FText GetAssetDisplayName() const override;
	virtual FLinearColor GetAssetColor() const override;
	virtual TSoftClassPtr<UObject> GetAssetClass() const override;
	virtual TConstArrayView<FAssetCategoryPath> GetAssetCategories() const override;
	virtual EAssetCommandResult OpenAssets(const FAssetOpenArgs& OpenArgs) const override;
	virtual EAssetCommandResult PerformAssetDiff(const FAssetDiffArgs& DiffArgs) const override;
	virtual FText GetAssetDescription(const FAssetData& AssetData) const override;
	// UAssetDefinition End
};

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27

.cpp

#include "AssetDefinition_CommonWidgetBlueprint.h"
#include "CommonWidgetBlueprint.h"
#include "WidgetBlueprintEditor.h"
#include "Misc/MessageDialog.h"
#include "SBlueprintDiff.h"

#define LOCTEXT_NAMESPACE "AssetTypeActions"

UAssetDefinition_CommonWidgetBlueprint::UAssetDefinition_CommonWidgetBlueprint() = default;

UAssetDefinition_CommonWidgetBlueprint::~UAssetDefinition_CommonWidgetBlueprint() = default;

FText UAssetDefinition_CommonWidgetBlueprint::GetAssetDisplayName() const
{
	return LOCTEXT("UAssetDefinition_CommonWidgetBlueprint", "Common Widget Blueprint");
}

FLinearColor UAssetDefinition_CommonWidgetBlueprint::GetAssetColor() const
{
	return FLinearColor(FColor(44, 89, 180));
}

TSoftClassPtr<> UAssetDefinition_CommonWidgetBlueprint::GetAssetClass() const
{
	return UCommonWidgetBlueprint::StaticClass();
}

TConstArrayView<FAssetCategoryPath> UAssetDefinition_CommonWidgetBlueprint::GetAssetCategories() const
{
	static const TArray<FAssetCategoryPath, TFixedAllocator<1>> Categories = { EAssetCategoryPaths::UI };
	return Categories;
}

EAssetCommandResult UAssetDefinition_CommonWidgetBlueprint::OpenAssets(const FAssetOpenArgs& OpenArgs) const
{
	EToolkitMode::Type Mode = OpenArgs.GetToolkitMode();

	EAssetCommandResult Result = EAssetCommandResult::Unhandled;

	for (UBlueprint* Blueprint : OpenArgs.LoadObjects<UBlueprint>())
	{
		if (Blueprint && Blueprint->SkeletonGeneratedClass && Blueprint->GeneratedClass)
		{
			TSharedRef<FWidgetBlueprintEditor> NewBlueprintEditor(new FWidgetBlueprintEditor);

			const bool bShouldOpenInDefaultsMode = false;
			TArray<UBlueprint*> Blueprints;
			Blueprints.Add(Blueprint);

			NewBlueprintEditor->InitWidgetBlueprintEditor(Mode, OpenArgs.ToolkitHost, Blueprints, bShouldOpenInDefaultsMode);
		}
		else
		{
			FMessageDialog::Open( EAppMsgType::Ok, LOCTEXT("FailedToLoadWidgetBlueprint", "Widget Blueprint could not be loaded because it derives from an invalid class.\nCheck to make sure the parent class for this blueprint hasn't been removed!"));
		}

		Result = EAssetCommandResult::Handled;
	}

	return Result;
}

EAssetCommandResult UAssetDefinition_CommonWidgetBlueprint::PerformAssetDiff(const FAssetDiffArgs& DiffArgs) const
{
	const UBlueprint* OldBlueprint = Cast<UBlueprint>(DiffArgs.OldAsset);
	const UBlueprint* NewBlueprint = Cast<UBlueprint>(DiffArgs.NewAsset);
	UClass* AssetClass = GetAssetClass().Get();
	SBlueprintDiff::CreateDiffWindow(OldBlueprint, NewBlueprint, DiffArgs.OldRevision, DiffArgs.NewRevision, AssetClass);
	return EAssetCommandResult::Handled;
}

FText UAssetDefinition_CommonWidgetBlueprint::GetAssetDescription(const FAssetData& AssetData) const
{
	FString Description = AssetData.GetTagValueRef<FString>( GET_MEMBER_NAME_CHECKED( UBlueprint, BlueprintDescription ) );
	if ( !Description.IsEmpty() )
	{
		Description.ReplaceInline( TEXT( "\\n" ), TEXT( "\n" ) );
		return FText::FromString( MoveTemp(Description) );
	}

	return FText::GetEmpty();
}

#undef LOCTEXT_NAMESPACE

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84

这时候就得到了我们想要的结果：
在这里插入图片描述

往自己的UserWidget添加测试代码，发现能正常反射处理，因此此篇幅完成

在这里插入图片描述
在这里插入图片描述
对，别忘记添加Editor模块：

        "UnrealEd",
        "UMGEditor", 
        "UMG",
        "AssetDefinition",
        "Kismet",

  • 1
  • 2
  • 3
  • 4
  • 5

Runtime模块：

        "UMG",  

  • 1

在这里插入图片描述
但是这样只会发现新建的控件放在蓝图中无法正常出现，因为仔细看它的模块，其实它因为这添加的支持内容很多，因此，我们这里最终考虑还是创建UWidgetBlueprint，但是支持的SupportClass依旧是我们自定义的Class就行，这样，我们就能用UserWdiget支持的一套变量反射，它内部做这部分UI映射做了很多处理，因此这里不考虑自己去写这部分内容，这里只需要在Factory真正创建的位置去修改就行，
FactoryCreateNew方法修改：

UObject* UCommonUserWidgetFactory::FactoryCreateNew(UClass* Class, UObject* InParent, FName Name, EObjectFlags Flags, UObject* Context, FFeedbackContext* Warn, FName CallingContext)
{
	// Make sure we are trying to factory a Anim Blueprint, then create and init one
	check(Class->IsChildOf(UCommonWidgetBlueprint::StaticClass()));

	UClass* CurrentParentClass = ParentClass;
	if (CurrentParentClass == nullptr)
	{
		CurrentParentClass = UCommonUserWidget::StaticClass();
	}

	// If they selected an interface, force the parent class to be UInterface
	if (BlueprintType == BPTYPE_Interface)
	{
		CurrentParentClass = UInterface::StaticClass();
	}

	if ( (CurrentParentClass == nullptr) || !FKismetEditorUtilities::CanCreateBlueprintOfClass(CurrentParentClass) || !CurrentParentClass->IsChildOf(UCommonUserWidget::StaticClass()) )
	{
		FFormatNamedArguments Args;
		Args.Add( TEXT("ClassName"), CurrentParentClass ? FText::FromString( CurrentParentClass->GetName()) : LOCTEXT("Null", "(null)") );
		FMessageDialog::Open( EAppMsgType::Ok, FText::Format( LOCTEXT("CannotCreateCommonWidgetBlueprint", "Cannot create a Common Widget Blueprint based on the class '{ClassName}'."), Args ) );
		return nullptr;
	}
	else
	{
		if (!GetDefault<UUMGEditorProjectSettings>()->bUseWidgetTemplateSelector)
		{
			RootWidgetClass = GetDefault<UUMGEditorProjectSettings>()->DefaultRootWidget;
		}
		 -------------------------------修改部分 -------------------------------
		UWidgetBlueprint* NewBP = CastChecked<UWidgetBlueprint>(FKismetEditorUtilities::CreateBlueprint(CurrentParentClass, InParent, Name, BlueprintType, UWidgetBlueprint::StaticClass(), UWidgetBlueprintGeneratedClass::StaticClass(), CallingContext));

		// Create the desired root widget specified by the project
		if ( NewBP->WidgetTree->RootWidget == nullptr )
		{
			if (TSubclassOf<UPanelWidget> RootWidgetPanel = RootWidgetClass)
			{
				UWidget* Root = NewBP->WidgetTree->ConstructWidget<UWidget>(RootWidgetPanel);
				NewBP->WidgetTree->RootWidget = Root;
			}
		}

		{
			IUMGEditorModule::FWidgetBlueprintCreatedArgs Args;
			Args.ParentClass = CurrentParentClass;
			Args.Blueprint = NewBP;

			IUMGEditorModule& UMGEditor = FModuleManager::LoadModuleChecked<IUMGEditorModule>("UMGEditor");
			UMGEditor.OnWidgetBlueprintCreated().Broadcast(Args);
		}

		return NewBP;
	}
}

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55

在这里插入图片描述在这里插入图片描述

很遗憾，自己要去处理这部分内容时间上不划算，不过，最终创建时候，依旧是选的我们的自定义内容，这还是理想的。

到此，篇幅结束，当然，有人可能比较喜欢像我一样做一些明显的图标，便于选中，这里只需要添加Style就行：
Editor模块：

.h

// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

#include "Styling/SlateStyle.h"

/** Manages the style which provides resources for niagara editor widgets. */
class FDivinePrologueEditorStyle : public FSlateStyleSet
{
public:
	static  void Register();
	static  void Unregister();
	static  void Shutdown();

	/** reloads textures used by slate renderer */
	static  void ReloadTextures();

	/** @return The Slate style set for niagara editor widgets */
	static  const FDivinePrologueEditorStyle& Get();

	static  void ReinitializeStyle();
	virtual const FName& GetStyleSetName() const override;

private:	
	FDivinePrologueEditorStyle();
	void InitIcons();
	
	static TSharedPtr<FDivinePrologueEditorStyle> DivinePrologueEditorStyle;
};

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
.cpp
// Copyright Epic Games, Inc. All Rights Reserved.

#include "DivinePrologueEditorStyle.h"
#include "Styling/SlateStyleMacros.h"
#include "Styling/SlateStyleRegistry.h"

TSharedPtr<FDivinePrologueEditorStyle> FDivinePrologueEditorStyle::DivinePrologueEditorStyle = nullptr;

void FDivinePrologueEditorStyle::Register()
{
	FSlateStyleRegistry::RegisterSlateStyle(Get());
}

void FDivinePrologueEditorStyle::Unregister()
{
	FSlateStyleRegistry::UnRegisterSlateStyle(Get());
}

void FDivinePrologueEditorStyle::Shutdown()
{
	Unregister();
	DivinePrologueEditorStyle.Reset();
}

const FVector2D Icon8x8(8.0f, 8.0f);
const FVector2D Icon12x12(12.0f, 12.0f);
const FVector2D Icon16x16(16.0f, 16.0f);
const FVector2D Icon20x20(20.0f, 20.0f);
const FVector2D Icon32x32(32.0f, 32.0f);
const FVector2D Icon40x40(40.0f, 40.0f);
const FVector2D Icon64x64(64.0f, 64.0f);

FDivinePrologueEditorStyle::FDivinePrologueEditorStyle() : FSlateStyleSet("DivinePrologueEditorStyle")
{
	FSlateStyleSet::SetContentRoot(FPaths::ProjectContentDir() / TEXT("StyleTextures"));
	FSlateStyleSet::SetCoreContentRoot(FPaths::ProjectContentDir() / TEXT("StyleTextures"));
	
	InitIcons();
}

void FDivinePrologueEditorStyle::InitIcons()
{
	Set("CommonUserWidget.Icon", new IMAGE_BRUSH("Icon", Icon64x64));
}

void FDivinePrologueEditorStyle::ReloadTextures()
{
	FSlateApplication::Get().GetRenderer()->ReloadTextureResources();
}

const FDivinePrologueEditorStyle& FDivinePrologueEditorStyle::Get()
{
	if(!DivinePrologueEditorStyle.IsValid())
	{
		DivinePrologueEditorStyle = MakeShareable(new FDivinePrologueEditorStyle());
	}
	
	return *DivinePrologueEditorStyle;
}

void FDivinePrologueEditorStyle::ReinitializeStyle()
{
	Unregister();
	DivinePrologueEditorStyle.Reset();
	Register();	
}

const FName& FDivinePrologueEditorStyle::GetStyleSetName() const
{
	static FName StyleName("DivinePrologueEditorStyle");
	return StyleName;
}

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73

这是我的路径：在这里插入图片描述
当然创建之后需要在模块启动时候注册它：
在这里插入图片描述
在UCommonUserWidgetFactory里面重载下面方法，返回我们Style里面对应的图片：

	virtual FName GetNewAssetThumbnailOverride() const override
	{
		return TEXT("CommonUserWidget.Icon");
	}

  • 1
  • 2
  • 3
  • 4
声明：本文内容由网友自发贡献，不代表【wpsshop博客】立场，版权归原作者所有，本站不承担相应法律责任。如您发现有侵权的内容，请联系我们。转载请注明出处：https://www.wpsshop.cn/w/Cpp五条/article/detail/587168
推荐阅读
相关标签

Copyright © 2003-2013 www.wpsshop.cn 版权所有，并保留所有权利。

  

闽ICP备14008679号