SWidget创建的实例
// 具体代码见百度网盘TestReflection
/***************************** SSURAAR_MainWnd.h ********************************/
#include "CoreMinimal.h"
#include "Slate.h"
#include "Engine/RendererSettings.h"
DECLARE_DELEGATE_OneParam(FOnCustomStencilChanged, ECustomDepthStencil::Type)
DECLARE_DELEGATE_OneParam(FOnAlphaChannelModeChanged, EAlphaChannelMode::Type)
DECLARE_DELEGATE_OneParam(FOnFrameBufferPixelFormatChanged, EDefaultBackBufferPixelFormat::Type)
class SSURAAR_MainWnd : public SCompoundWidget
{
public:
SLATE_BEGIN_ARGS(SSURAAR_MainWnd){}
SLATE_END_ARGS()
void Construct(const FArguments& Args);
TSharedRef<SWidget> MakeCustomStencilCombo(FOnCustomStencilChanged OnChanged, TAttribute<ECustomDepthStencil::Type> SelectedEnum, EOrientation Orientation);
TSharedRef<SWidget> MakeAlphaChannelModeCombo(FOnAlphaChannelModeChanged OnChanged, TAttribute<EAlphaChannelMode::Type> SelectedEnum, EOrientation Orientation);
TSharedRef<SWidget> MakeFrameBufferPixelFormatCombo(FOnFrameBufferPixelFormatChanged OnChanged, TAttribute<EDefaultBackBufferPixelFormat::Type> SelectedEnum, EOrientation Orientation);
TSharedRef<SWidget> MakeSURACameraDriverDetails();
private:
EVisibility CheckSuraCameraDriverExist() const;
};
/********************************** SSURAAR_MainWnd.cpp ***********************************/
// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.
#include "SSURAAR_MainWnd.h"
#include <Kismet/GameplayStatics.h>
#include "SSuraEnumComboBox.h"
#include "SURACameraDriver.h"
#include "Customizations/SURACameraDriverDetailsCustomization.h"
#define LOCTEXT_NAMESPACE "SURAAR_MainWnd"
void SSURAAR_MainWnd::Construct(const FArguments& Args)
{
FText PlaceholderText = LOCTEXT("PlaceholderText", "Placeholder");
auto Settings = GetMutableDefault<URendererSettings>();
ChildSlot
[
SNew(SVerticalBox)
+SVerticalBox::Slot()
.AutoHeight()
[
SNew(SUniformGridPanel)
.SlotPadding(TAttribute<FMargin>(FMargin(4.0f)))
+SUniformGridPanel::Slot(0, 0)
.VAlign(EVerticalAlignment::VAlign_Center)
[
SNew(STextBlock)
.Text(LOCTEXT("Custom Depth-Stencil Pass", "Custom Depth-Stencil Pass"))
]
+SUniformGridPanel::Slot(1, 0)
.HAlign(EHorizontalAlignment::HAlign_Fill)
.VAlign(EVerticalAlignment::VAlign_Fill)
[
MakeCustomStencilCombo(
FOnCustomStencilChanged::CreateLambda([&](ECustomDepthStencil::Type stencil)
{
auto Settings = GetMutableDefault<URendererSettings>();
Settings->CustomDepthStencil = stencil;
}),
TAttribute<ECustomDepthStencil::Type>::Create(TAttribute<ECustomDepthStencil::Type>::FGetter::CreateLambda([]()
{
auto Settings = GetDefault<URendererSettings>();
return Settings->CustomDepthStencil.GetValue();
})),
Orient_Vertical
)
]
+SUniformGridPanel::Slot(0, 1)
.VAlign(EVerticalAlignment::VAlign_Center)
[
SNew(STextBlock)
.Text(LOCTEXT("Enable alpha channel support", "Enable alpha channel support in post processing"))
]
+SUniformGridPanel::Slot(1, 1)
.HAlign(EHorizontalAlignment::HAlign_Fill)
.VAlign(EVerticalAlignment::VAlign_Fill)
[
MakeAlphaChannelModeCombo(
FOnAlphaChannelModeChanged::CreateLambda([&](EAlphaChannelMode::Type AlphaMode)
{
auto Settings = GetMutableDefault<URendererSettings>();
Settings->bEnableAlphaChannelInPostProcessing = AlphaMode;
}),
TAttribute<EAlphaChannelMode::Type>::Create(TAttribute<EAlphaChannelMode::Type>::FGetter::CreateLambda([]()
{
auto Settings = GetDefault<URendererSettings>();
return Settings->bEnableAlphaChannelInPostProcessing.GetValue();
})),
Orient_Vertical
)
]
+SUniformGridPanel::Slot(0, 2)
.VAlign(EVerticalAlignment::VAlign_Center)
[
SNew(STextBlock)
.Text(LOCTEXT("Frame Buffer Pixel Format", "Frame Buffer Pixel Format"))
]
+SUniformGridPanel::Slot(1, 2)
.HAlign(EHorizontalAlignment::HAlign_Fill)
.VAlign(EVerticalAlignment::VAlign_Fill)
[
MakeFrameBufferPixelFormatCombo(
FOnFrameBufferPixelFormatChanged::CreateLambda([&](EDefaultBackBufferPixelFormat::Type PixelFormat)
{
auto Settings = GetMutableDefault<URendererSettings>();
Settings->DefaultBackBufferPixelFormat = PixelFormat;
}),
TAttribute<EDefaultBackBufferPixelFormat::Type>::Create(TAttribute<EDefaultBackBufferPixelFormat::Type>::FGetter::CreateLambda([]()
{
auto Settings = GetDefault<URendererSettings>();
return Settings->DefaultBackBufferPixelFormat.GetValue();
})),
Orient_Vertical
)
]
]
+SVerticalBox::Slot()
.AutoHeight()
[
//SNew(STextBlock).Text(PlaceholderText)
SNew(SHorizontalBox)
+SHorizontalBox::Slot()
.AutoWidth()
[
SNew(SButton) // button for checking SURAAcameraDriver
.Visibility_Raw(this, &SSURAAR_MainWnd::CheckSuraCameraDriverExist)
.Content()
[
SNew(STextBlock).Text(LOCTEXT("SetupEnv", "Setup Environment"))
]
]
]
+ SVerticalBox::Slot()
[
MakeSURACameraDriverDetails()
]
/*+SVerticalBox::Slot()
[
SNew(STextBlock).Text(PlaceholderText)
]*/
];
}
TSharedRef<SWidget> SSURAAR_MainWnd::MakeCustomStencilCombo( FOnCustomStencilChanged OnChanged,
TAttribute<ECustomDepthStencil::Type> SelectedEnum, EOrientation Orientation )
{
TArray<SSuraEnumCombo<ECustomDepthStencil::Type>::FComboOption> CustomStencilInfo;
CustomStencilInfo.Add(SSuraEnumCombo<ECustomDepthStencil::Type>::FComboOption(
ECustomDepthStencil::Disabled, FSlateIcon(), LOCTEXT("CustomStencil.Disabled", "Disabled")));
CustomStencilInfo.Add(SSuraEnumCombo<ECustomDepthStencil::Type>::FComboOption(
ECustomDepthStencil::Enabled, FSlateIcon(), LOCTEXT("CustomStencil.Enabled", "Enabled")));
CustomStencilInfo.Add(SSuraEnumCombo<ECustomDepthStencil::Type>::FComboOption(
ECustomDepthStencil::EnabledOnDemand, FSlateIcon(), LOCTEXT("CustomStencil.EnabledOnDemand", "EnabledOnDemand")));
CustomStencilInfo.Add(SSuraEnumCombo<ECustomDepthStencil::Type>::FComboOption(
ECustomDepthStencil::EnabledWithStencil, FSlateIcon(), LOCTEXT("CustomStencil.EnabledWithStencil", "EnabledWithStencil")));
return SNew(SSuraEnumCombo<ECustomDepthStencil::Type>, MoveTemp(CustomStencilInfo))
.SelectedEnum(SelectedEnum)
.OnEnumChanged(OnChanged)
.Orientation(Orientation);
//.ToolTip(IDocumentation::Get()->CreateToolTip(LOCTEXT("GraphicsPresetTooltip", "Choose the graphical level to target (high-end only or scalable from low-end on up)."), NULL, TEXT("Shared/Editor/Settings/TargetHardware"), TEXT("GraphicalLevel")));
}
TSharedRef<SWidget> SSURAAR_MainWnd::MakeAlphaChannelModeCombo( FOnAlphaChannelModeChanged OnChanged,
TAttribute<EAlphaChannelMode::Type> SelectedEnum, EOrientation Orientation )
{
TArray<SSuraEnumCombo<EAlphaChannelMode::Type>::FComboOption> AlphaChannelModeInfo;
AlphaChannelModeInfo.Add(SSuraEnumCombo<EAlphaChannelMode::Type>::FComboOption(
EAlphaChannelMode::Disabled, FSlateIcon(), LOCTEXT("AlphaChannelMode.Disabled", "Disabled")));
AlphaChannelModeInfo.Add(SSuraEnumCombo<EAlphaChannelMode::Type>::FComboOption(
EAlphaChannelMode::LinearColorSpaceOnly, FSlateIcon(), LOCTEXT("AlphaChannelMode.LinearColorSpaceOnly", "LinearColorSpaceOnly")));
AlphaChannelModeInfo.Add(SSuraEnumCombo<EAlphaChannelMode::Type>::FComboOption(
EAlphaChannelMode::AllowThroughTonemapper, FSlateIcon(), LOCTEXT("AlphaChannelMode.AllowThroughTonemapper", "AllowThroughTonemapper")));
return SNew(SSuraEnumCombo<EAlphaChannelMode::Type>, MoveTemp(AlphaChannelModeInfo))
.SelectedEnum(SelectedEnum)
.OnEnumChanged(OnChanged)
.Orientation(Orientation);
//.ToolTip(IDocumentation::Get()->CreateToolTip(LOCTEXT("GraphicsPresetTooltip", "Choose the graphical level to target (high-end only or scalable from low-end on up)."), NULL, TEXT("Shared/Editor/Settings/TargetHardware"), TEXT("GraphicalLevel")));
}
TSharedRef<SWidget> SSURAAR_MainWnd::MakeFrameBufferPixelFormatCombo( FOnFrameBufferPixelFormatChanged OnChanged,
TAttribute<EDefaultBackBufferPixelFormat::Type> SelectedEnum, EOrientation Orientation )
{
TArray<SSuraEnumCombo<EDefaultBackBufferPixelFormat::Type>::FComboOption> FramePixelFormatInfo;
FramePixelFormatInfo.Add(SSuraEnumCombo<EDefaultBackBufferPixelFormat::Type>::FComboOption(
EDefaultBackBufferPixelFormat::DBBPF_B8G8R8A8, FSlateIcon(), LOCTEXT("FramePixelFormat.DBBPF_B8G8R8A8", "8bit RGBA")));
FramePixelFormatInfo.Add(SSuraEnumCombo<EDefaultBackBufferPixelFormat::Type>::FComboOption(
EDefaultBackBufferPixelFormat::DBBPF_A16B16G16R16_DEPRECATED, FSlateIcon(), LOCTEXT("FramePixelFormat.DBBPF_A16B16G16R16_DEPRECATED", "DEPRECATED - 16bit RGBA"), false));
FramePixelFormatInfo.Add(SSuraEnumCombo<EDefaultBackBufferPixelFormat::Type>::FComboOption(
EDefaultBackBufferPixelFormat::DBBPF_FloatRGB_DEPRECATED, FSlateIcon(), LOCTEXT("FramePixelFormat.DBBPF_FloatRGB_DEPRECATED", "DEPRECATED - Float RGB"), false));
FramePixelFormatInfo.Add(SSuraEnumCombo<EDefaultBackBufferPixelFormat::Type>::FComboOption(
EDefaultBackBufferPixelFormat::DBBPF_FloatRGBA, FSlateIcon(), LOCTEXT("FramePixelFormat.DBBPF_FloatRGBA", "Float RGBA")));
FramePixelFormatInfo.Add(SSuraEnumCombo<EDefaultBackBufferPixelFormat::Type>::FComboOption(
EDefaultBackBufferPixelFormat::DBBPF_A2B10G10R10, FSlateIcon(), LOCTEXT("FramePixelFormat.DBBPF_A2B10G10R10", "10bit RGB, 2bit Alpha")));
return SNew(SSuraEnumCombo<EDefaultBackBufferPixelFormat::Type>, MoveTemp(FramePixelFormatInfo))
.SelectedEnum(SelectedEnum)
.OnEnumChanged(OnChanged)
.Orientation(Orientation);
//.ToolTip(IDocumentation::Get()->CreateToolTip(LOCTEXT("GraphicsPresetTooltip", "Choose the graphical level to target (high-end only or scalable from low-end on up)."), NULL, TEXT("Shared/Editor/Settings/TargetHardware"), TEXT("GraphicalLevel")));
}
EVisibility SSURAAR_MainWnd::CheckSuraCameraDriverExist() const
{
TArray<AActor*> OutActors;
if (GWorld)
{
UGameplayStatics::GetAllActorsOfClass(GWorld, ASURACameraDriver::StaticClass(), OutActors);
}
if (OutActors.Num() == 0)
{
UE_LOG(LogTemp, Log, TEXT("No SuraCameraDriver found."));
return EVisibility::Visible;
}
else
{
return EVisibility::Collapsed;
}
}
TSharedRef<SWidget> SSURAAR_MainWnd::MakeSURACameraDriverDetails( )
{
FPropertyEditorModule& PropertyModule = FModuleManager::LoadModuleChecked<FPropertyEditorModule>(TEXT("PropertyEditor"));
FDetailsViewArgs Args;
Args.bAllowSearch = false;
Args.NameAreaSettings = FDetailsViewArgs::HideNameArea;
TSharedRef<IDetailsView> View = PropertyModule.CreateDetailView(Args);
View->RegisterInstancedCustomPropertyLayout(ASURACameraDriver::StaticClass(), FOnGetDetailCustomizationInstance::CreateStatic(&FSURACameraDriverDetailsCustomization::MakeInstance));
TArray<AActor*> OutActors;
if (GWorld)
{
UGameplayStatics::GetAllActorsOfClass(GWorld, ASURACameraDriver::StaticClass(), OutActors);
}
if (OutActors.Num() > 0)
{
View->SetObject(OutActors[0], true);
}
return View;
}
#undef LOCTEXT_NAMESPACE
config/配置存取
UCLASS(Config=AnjGameSettings, ConfigDoNotCheckDefaults/DefaultConfig)
class UAnjGameSettings : UDevelopSettings // [OR] UEditorSettings [OR]
class AAnjGameSettings : Axxx
{
UPROPERTY(Config)
int BroadcastPort = 8888;
AAnjGameSettings();
/** Gets the settings container name for the settings, either Project or Editor */
virtual FName GetContainerName() const override { return TEXT("Project"); }
/** Gets the category for the settings, some high level grouping like, Editor, Engine, Game...etc. */
virtual FName GetCategoryName() const override { return TEXT("DataDrivenSettings"); }
/** The unique name for your section of settings, uses the class's FName. */
virtual FName GetSectionName() const override { return TEXT("DataDrivenSettings"); }
}
代码中Config=AnjGameSettings用来设定class中带有Config meta信息的Property要写入AnjGameSettings.ini文件。参考官网文档，这个Config叫做Specifier，指定Configuration Categories，Categories列表在官网能看到。
AAnjGameSettings()构造函数可以用来设定Property的默认值：
AAnjGameSettings()构造函数可以用来设定Property的默认值：
UAnjGameSettings::UAnjGameSettings( )
{
if (GConfig)
{
FString IPStr;
if (!GConfig->GetString(TEXT("/Script/SuraForAnj.AnjGameSettings"), TEXT("LocalIP"), IPStr, GetClass()->GetConfigName()))
{
bool canBind = false;
TSharedRef<FInternetAddr> localIp = ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM)->GetLocalHostAddr(*GLog, canBind);
FIPv4Endpoint LocalEndpoint = FIPv4Endpoint(localIp);
LocalIP = LocalEndpoint.Address.ToString();
SaveConfig();
}
}
}
注意上面代码中的GetClass()->GetConfigName()，它返回Config指定的AnjGameSettings.ini文件的存储路径（也可以直接写GGameIni、GEngineIni等值）。SaveConfig()是UObject的函数，注意其Filename参数未指定时，内部实现是设定为GetClass()->GetConfigName()。
ConfigDoNotCheckDefaults与DefaultConfig的区别：
UpdateDefaultConfigFile()函数类似上面的SaveConfig()，但会把值写入AnjGameSettingsDefault.ini文件。而在调用SaveConfig()时，如为DefaultConfig，则当Property的值与xxxDefault.ini文件里的值一致时，xxx.ini文件里Property属性行会被删除，这是因为xxxDefault.ini文件先被读取，然后是xxx.ini，所以与xxxDefault.ini里一致的属性，没必要再往xxx.ini写一条记录。而指定了ConfigDoNotCheckDefaults时，SaveConfig()不检查有无Default.ini文件及里面的属性值，直接更新xxx.ini文件。
UpdateDefaultConfigFile()函数类似上面的SaveConfig()，但会把值写入AnjGameSettingsDefault.ini文件。而在调用SaveConfig()时，如为DefaultConfig，则当Property的值与xxxDefault.ini文件里的值一致时，xxx.ini文件里Property属性行会被删除，这是因为xxxDefault.ini文件先被读取，然后是xxx.ini，所以与xxxDefault.ini里一致的属性，没必要再往xxx.ini写一条记录。而指定了ConfigDoNotCheckDefaults时，SaveConfig()不检查有无Default.ini文件及里面的属性值，直接更新xxx.ini文件。
从UDeveloperSettings派生的UObject，可以继承其能够在UE编辑器的ProjectSettings/EditorPreferences->Category->Section->(UPROPERTY.Category)里直接编辑属性的能力。
- GetContainerName()：返回TEXT("Project")或者TEXT("Editor")，标识属性要在Project Settings菜单还是Editor Preferences菜单里设置。
- GetCategoryName()：指定Settings界面的Category，比如Project Settings里的Project/Game/Plugins等。
- GetSectionName()：指定该UObject的config属性要写入的界面段落，在该段落里面则是根据Property自己的Catogry meta信息来排布。
关于config信息的读取，参考：
To access the developer settings in C++ we use the CDO (Class Default Object) as that is already automatically instanced for us and accessed using GetDefault<T>();
To access the developer settings in C++ we use the CDO (Class Default Object) as that is already automatically instanced for us and accessed using GetDefault<T>();
void USSaveGameSubsystem::Initialize(FSubsystemCollectionBase& Collection)
{
Super::Initialize(Collection);
const USSaveGameSettings* SGSettings = GetDefault<USSaveGameSettings>(); // Access via CDO // Access defaults from DefaultGame.ini SlotName = SGSettings->SaveSlotName;
// Make sure it's loaded into memory .Get() only resolves if already loaded previously elsewhere in code UDataTable* DummyTable = SGSettings->DummyTablePath.LoadSynchronous(); }
有一个全部自定义处理config的参考
获取本地IP地址
// Module: Sockets.build.cs #include "SocketSubsystem.h" #include "IPAddress.h" #include "Interfaces/IPv4/IPv4Endpoint.h" bool canBind = false; TSharedRef<FInternetAddr> localIp = ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM)->GetLocalHostAddr(*GLog, canBind); FIPv4Endpoint LocalEndpoint = FIPv4Endpoint(localIp); LocalIP = LocalEndpoint.Address.ToString();
ini文件读写
https://blog.51cto.com/hanzhichao/3201113 from configparser import ConfigParser conf = ConfigParser() conf.read(configFilePath, encoding=cur_encoding) print(conf['section']['key']) ''' LutConfig.py ''' from pathlib import Path from typing import * import chardet from configparser import ConfigParser def GetDefaultConfigFilePath() -> Path: return Path(__file__).parent.absolute() / 'Windows/TestLutPro/Config/DefaultGame.ini' def GetConfig(configFilePath: str) -> dict: # 首先二进制方式打开文件 with open(configFilePath, 'rb') as frb: # 检测编码方式 cur_encoding = chardet.detect(frb.read())['encoding'] # 指定文件编码方式 conf = ConfigParser() conf.read(configFilePath, encoding=cur_encoding) configResult = {} section = '/Script/ApplyLutTools.ApplyLutSettings' if conf.has_option(section, 'ServerIP'): configResult['ServerIP'] = conf[section]['ServerIP'] if conf.has_option(section, 'ServerPort'): configResult['ServerPort'] = conf[section].getint('ServerPort') if conf.has_option(section, 'LocalListeningIP'): configResult['LocalListeningIP'] = conf[section]['LocalListeningIP'] return configResult def GetDefaultConfig() -> dict: return GetConfig(GetDefaultConfigFilePath())
Details视图定制
一个Actor或Property的Details信息的展示界面，可以定制。这项工作涉及几个基本的接口：
- IDetailsView，其派生自SCompoundWidget。能看到的Details界面就是这个接口的实例。
- SDetailsView->SDetailsViewBase->IDetailsViewPrivate->IDetailsView
- FPropertyEditorModule::CreateDetailView(const FDetailsViewArgs& DetailsViewArgs); // 用户填写参数后调用该函数拿到一个IDetailsView实例。
- IDetailLayoutBuilder接口是一个工具类，它定义了一套支持Category的显示控制、Property的显示控制、隐藏等等功能的接口。至于这些功能的实际表现由具体实现来完成
- IDetailLayoutBuilder接口在UE4里有一个实现：FDetailLayoutBuilderImpl。这个实现按照一套确定的风格完成了上面说的功能概念，UE4里如上功能均由该实现来完成
- UE4额外提供了一个IDetailCustomization接口，用户需要实现其CustomizeDetails(IDetailLayoutBuilder& DetailBuilder)函数，目的是集中在这里将IDetailLayoutBuilder需要的数据输入给它。这也是通常用户要定制Details视图时唯一需要实现的接口。
- FPropertyEditorModule::RegisterCustomClassLayout()实现将IDetailCustomization信息提交给引擎的功能。
以上需要引用【PropertyEditor】模块。
代码示例：
针对特定Class类型的所有实例定制其Details面板的情形：
针对特定Class类型的所有实例定制其Details面板的情形：
StarupModule() {
FPropertyEditorModule& PropertyModule = FModuleManager::LoadModuleChecked<FPropertyEditorModule>(TEXT("PropertyEditor"));
// Custom Class Layouts
auto AddCustomClass = [this, InPropertyModule = &PropertyModule](FName Name, FOnGetDetailCustomizationInstance InstanceGetter)
{
InPropertyModule->RegisterCustomClassLayout(Name, InstanceGetter);
CustomClassLayoutNames.Add(Name);
};
AddCustomClass(ASURACameraDriver::StaticClass()->GetFName(), FOnGetDetailCustomizationInstance::CreateStatic(&FSURACameraDriverDetailsCustomization::MakeInstance));
}
ShutdownModule() {
if (FModuleManager::Get().IsModuleLoaded("PropertyEditor"))
{
FPropertyEditorModule& PropertyModule = FModuleManager::GetModuleChecked<FPropertyEditorModule>("PropertyEditor");
for (FName ClassName : CustomClassLayoutNames)
{
PropertyModule.UnregisterCustomClassLayout(ClassName);
}
CustomClassLayoutNames.Reset();
}
}
// .h TArray<FName> CustomClassLayoutNames;
针对特定Class类型的某个实例定制Details面板。需要在该实例对应的IDetailsView中设置，详见代码 Customizations/SURACameraDriverDetailsCustomization代码
IDetailsView面板与UObject建立关联：
TSharedRef<SWidget> SSURAAR_MainWnd::MakeSURACameraDriverDetails( )
{
FPropertyEditorModule& PropertyModule = FModuleManager::LoadModuleChecked<FPropertyEditorModule>(TEXT("PropertyEditor"));
FDetailsViewArgs Args;
Args.bAllowSearch = false; // 隐藏Details面板的搜索框
Args.NameAreaSettings = FDetailsViewArgs::HideNameArea; // 隐藏Details面板的角色名框
TSharedRef<IDetailsView> View = PropertyModule.CreateDetailView(Args);
View->RegisterInstancedCustomPropertyLayout(ASURACameraDriver::StaticClass(), FOnGetDetailCustomizationInstance::CreateStatic(&FSURACameraDriverDetailsCustomization::MakeInstance));
TArray<AActor*> OutActors;
if (GWorld)
{
UGameplayStatics::GetAllActorsOfClass(GWorld, ASURACameraDriver::StaticClass(), OutActors);
}
if (OutActors.Num() > 0)
{
View->SetObject(OutActors[0], true);
}
return View; }