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‎ColorWheelPlugin.uplugin‎

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{
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"FileVersion": 3,
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"Version": 1,
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"VersionName": "2020.1.4",
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"FriendlyName": "Color Wheel",
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"Description": "Lets you add a color wheel to your widget, comes with helper nodes like Hexadecimal conversion.",
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"Category": "Widget",
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"CreatedBy": "W2.Wizard",
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"CreatedByURL": "https://w2wizard.myportfolio.com/",
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"DocsURL": "",
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"MarketplaceURL": "com.epicgames.launcher://ue/marketplace/product/ce01648a2cde41338991bb855a624ffa",
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"SupportURL": "https://w2wizard.myportfolio.com/contact",
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"EngineVersion": "4.27.0",
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"CanContainContent": false,
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"Installed": false,
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"Modules": [
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{
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"Name": "ColorWheelPlugin",
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"Type": "Runtime",
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"LoadingPhase": "PreDefault",
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"BlacklistPlatforms": [
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"IOS",
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"Android",
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"Linux"
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]
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}
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]
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}

‎Config/FilterPlugin.ini‎

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[FilterPlugin]
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; This section lists additional files which will be packaged along with your plugin. Paths should be listed relative to the root plugin directory, and
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; may include "...", "*", and "?" wildcards to match directories, files, and individual characters respectively.
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;
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; Examples:
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; /README.txt
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; /Extras/...
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; /Binaries/ThirdParty/*.dll

‎Resources/Icon128.png‎

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‎Source/ColorWheelPlugin/ColorWheelPlugin.Build.cs‎

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// Copyright (c) W2.Wizard 2020-2021. All Rights Reserved.
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using System.IO;
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using UnrealBuildTool;
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public class ColorWheelPlugin : ModuleRules
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{
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public ColorWheelPlugin(ReadOnlyTargetRules Target) : base(Target)
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{
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PCHUsage = ModuleRules.PCHUsageMode.UseExplicitOrSharedPCHs;
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PublicIncludePaths.Add(Path.Combine(ModuleDirectory, "Public"));
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PrivateIncludePaths.Add(Path.Combine(ModuleDirectory, "Private"));
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PrivateDependencyModuleNames.AddRange(
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new string[]
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{
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"Core",
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"ApplicationCore",
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"CoreUObject",
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"InputCore",
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"Engine",
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"UMG",
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"Slate",
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"SlateCore"
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}
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);
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}
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}

‎Source/ColorWheelPlugin/Private/ColorWheelHelper.cpp‎

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// Copyright (c) W2.Wizard 2020-2021. All Rights Reserved.
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#include "ColorWheelHelper.h"
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uint8 UColorWheelHelper::HexToByte(FString Hex)
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{
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uint8 OutDec;
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Hex.StartsWith("#") ? Hex = Hex.Mid(1,Hex.Len()-1) : Hex;
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HexToBytes(Hex.ToUpper(), &OutDec);
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return OutDec;
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// Old Method, if you're looking for a way without using functions.
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// const int len = Hex.Len();
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// uint8 Out = 0;
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//
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// for (int i = 0; i < len; i++)
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// {
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// char digit = Hex[len - 1 - i];
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// if (digit >= '0' && digit <= '9')
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// {
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// Out += (digit - '0') * FMath::Pow(16,i);
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// }
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// else
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// {
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// Out += (digit - 'A' + 10) * FMath::Pow(16,i);
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// }
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// }
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//
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// return Out;
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}
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FLinearColor UColorWheelHelper::RandomLinearColor(bool RandomAlpha, bool TrueRandom)
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{
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FLinearColor OutColor;
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// True random color
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if (TrueRandom)
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{
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OutColor = FLinearColor
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(
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FMath::FRand(),
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FMath::FRand(),
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FMath::FRand(),
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RandomAlpha ? FMath::FRand() : 1
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);
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return OutColor;
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}
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// Simple random color
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OutColor = FLinearColor::MakeRandomColor();
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if (RandomAlpha) OutColor.A = FMath::FRand();
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return OutColor;
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}
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FColor UColorWheelHelper::RandomColor(bool RandomAlpha, bool TrueRandom)
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{
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FColor OutColor;
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// True random color
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if (TrueRandom)
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{
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OutColor = FColor
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(
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FMath::RandRange(0,255),
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FMath::RandRange(0,255),
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FMath::RandRange(0,255),
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RandomAlpha ? FMath::Rand() : 1
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);
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return OutColor;
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}
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// Simple random color
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OutColor = FColor::MakeRandomColor();
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if (RandomAlpha) OutColor.A = FMath::Rand();
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return OutColor;
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}

‎Source/ColorWheelPlugin/Private/ColorWheelPlugin.cpp‎

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// Copyright (c) W2.Wizard 2020-2021. All Rights Reserved.
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#include "ColorWheelPlugin.h"
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#define LOCTEXT_NAMESPACE "FColorWheelPluginModule"
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void FColorWheelPluginModule::StartupModule()
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{
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}
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void FColorWheelPluginModule::ShutdownModule()
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{
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}
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#undef LOCTEXT_NAMESPACE
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IMPLEMENT_MODULE(FColorWheelPluginModule, ColorWheelPlugin)

‎Source/ColorWheelPlugin/Private/ColorWidget.cpp‎

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// Copyright (c) W2.Wizard 2020-2021. All Rights Reserved.
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#include "ColorWidget.h"
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/// Slate Overrides ///
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TSharedRef<SWidget> UColorWidget::RebuildWidget()
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{
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ColorWheel = SNew(SWColorWheel)
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.SelectedColor_UObject(this, &UColorWidget::GetColor)
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.SelectorPin(&SelectorPin)
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.HueCircle(&HueCircle)
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.OnMouseCaptureBegin_UObject(this, &UColorWidget::MouseDown)
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.OnMouseCaptureEnd_UObject(this, &UColorWidget::MouseUp)
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.OnValueChanged(FOnLinearColorValueChanged::CreateUObject(this, &UColorWidget::OnValueChanged));
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return ColorWheel.ToSharedRef();
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}
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void UColorWidget::ReleaseSlateResources(bool bReleaseChildren)
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{
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Super::ReleaseSlateResources(bReleaseChildren);
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ColorWheel.Reset();
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}
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void UColorWidget::OnValueChanged(FLinearColor NewValue)
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{
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Color = NewValue.HSVToLinearRGB();
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OnColorChanged.Broadcast(Color);
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}
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/// Main Functions ///
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void UColorWidget::SetColor(const FLinearColor NewColor)
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{
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// Incase of Black, the wheel gets fucked ヽ(`Д´)ﾉ︵ ┻━┻.
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if (NewColor.IsAlmostBlack())
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{
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// We pass in a false value
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Color = FLinearColor::White;
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// Preserve alpha.
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Color.A = NewColor.A;
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IsNull = true;
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return;
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}
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Color = NewColor;
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IsNull = false;
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}
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FLinearColor UColorWidget::GetCurrentColor()
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{
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// Was input black?
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if (IsNull)
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{
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// Return black color
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auto FallbackVal = FLinearColor::Black;
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FallbackVal.A = Color.A;
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return FallbackVal;
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}
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return Color;
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}
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/// Generics ///
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void UColorWidget::SetColorAndOpacity(FLinearColor InColorAndOpacity, TEnumAsByte<EWheelBrushTarget> Target)
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{
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// Update the values themselves, again this doesnt look good so change it later perhaps.
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auto ColorVal = FSlateColor(InColorAndOpacity);
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switch (Target)
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{
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case EWheelBrushTarget::All:
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SelectorPin.TintColor = ColorVal;
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HueCircle.TintColor = ColorVal;
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break;
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case EWheelBrushTarget::SelectorPin:
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SelectorPin.TintColor = ColorVal;
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break;
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case EWheelBrushTarget::HueCircle:
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HueCircle.TintColor = ColorVal;
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break;
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}
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// Update the visual widget itself
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if (ColorWheel.IsValid())
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{
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ColorWheel->SetColorAndOpacity(InColorAndOpacity, Target);
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}
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}
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