Replaced includes of monolithic headers.

CHANGES.md

@@ -5,6 +5,10 @@ Versions marked as 'unofficial' are labelled only for the needs of this changelo
 Change History
 --------------
 
+Version: 1.20 (2020/06)
+Transition to IWYU and maintenence:
+- Replaced includes of monolithic headers.
+
 Version: 1.19 (2020/03-06)
 - Integrated fix for issue with ImGui popup/modal windows not being able to be closed in transparent mouse input mode. 
 - Integrated first version of Adaptive Canvas Size.

ImGui.uplugin

@@ -1,7 +1,7 @@
 {
 	"FileVersion": 3,
 	"Version": 1,
-	"VersionName": "1.19",
+	"VersionName": "1.20",
 	"FriendlyName": "ImGui",
 	"Description": "",
 	"Category": "Debug",

README.md

@@ -9,7 +9,7 @@ Dear ImGui is an immediate-mode graphical user interface library that is very li
 
 Status
 ------
-Version: 1.19
+Version: 1.20
 
 ImGui version: 1.74
 

Source/ImGui/Private/ImGuiDrawData.h

@@ -4,8 +4,7 @@
 
 #include "ImGuiInteroperability.h"
 
-#include <Runtime/Launch/Resources/Version.h>
+#include <Rendering/RenderingCommon.h>
-#include <SlateCore.h>
 
 #include <imgui.h>
 

Source/ImGui/Private/ImGuiInputHandler.cpp

@@ -10,6 +10,7 @@
 #include "ImGuiModuleSettings.h"
 
 #include <Engine/Console.h>
+#include <GameFramework/InputSettings.h>
 #include <Input/Events.h>
 
 #if WITH_EDITOR

Source/ImGui/Private/ImGuiModuleSettings.cpp

@@ -7,6 +7,8 @@
 #include "ImGuiModuleCommands.h"
 #include "ImGuiModuleProperties.h"
 
+#include <GameFramework/GameUserSettings.h>
+
 
 //====================================================================================================
 // FImGuiDPIScaleInfo

Source/ImGui/Private/ImGuiModuleSettings.h

@@ -2,6 +2,7 @@
 
 #pragma once
 
+#include <SlateTypes.h>
 #include <Curves/CurveFloat.h>
 #include <Delegates/Delegate.h>
 #include <UObject/Object.h>

Source/ImGui/Private/ImGuiPrivatePCH.h

@@ -8,8 +8,8 @@
 #include "ImGuiModule.h"
 
 // Engine
-#include <Core.h>
+#include <CoreMinimal.h>
-#include <Engine.h>
+#include <Engine/Engine.h>
 
 // For backward compatibility we will use FStringClassReference which in newer engine versions is a typedef for
 // FSoftClassPath. Include right soft class reference header to avoid warnings in newer engine version.

Source/ImGui/Private/TextureManager.h

@@ -2,7 +2,6 @@
 
 #pragma once
 
-#include <Core.h>
 #include <Styling/SlateBrush.h>
 #include <Textures/SlateShaderResource.h>
 

Source/ImGui/Private/Utilities/DebugExecBindings.cpp

@@ -6,6 +6,7 @@
 #include "ImGuiModuleSettings.h"
 
 #include <GameFramework/PlayerInput.h>
+#include <UObject/UObjectIterator.h>
 
 
 namespace

Source/ImGui/Private/Utilities/WorldContext.h

@@ -2,8 +2,10 @@
 
 #pragma once
 
-#include <Core.h>
+#include <CoreMinimal.h>
-#include <Engine.h>
+#include <Engine/Engine.h>
+#include <Engine/GameInstance.h>
+#include <Engine/GameViewportClient.h>
 
 
 // Utilities helping to get a World Context.

Source/ImGui/Private/Widgets/SImGuiCanvasControl.cpp

@@ -4,6 +4,8 @@
 
 #include "SImGuiCanvasControl.h"
 
+#include <SlateOptMacros.h>
+
 
 namespace
 {

Source/ImGui/Private/Widgets/SImGuiCanvasControl.h

@@ -6,6 +6,8 @@
 #include "ImGuiModuleDebug.h"
 #include "ImGuiModuleSettings.h"
 
+#include <Brushes/SlateBorderBrush.h>
+#include <Widgets/DeclarativeSyntaxSupport.h>
 #include <Widgets/SLeafWidget.h>
 
 

Source/ImGui/Private/Widgets/SImGuiLayout.cpp

@@ -8,6 +8,7 @@
 #include "ImGuiModuleManager.h"
 #include "ImGuiModuleSettings.h"
 
+#include <SlateOptMacros.h>
 #include <Widgets/Layout/SConstraintCanvas.h>
 #include <Widgets/Layout/SDPIScaler.h>
 #include <Widgets/Layout/SScaleBox.h>

Source/ImGui/Private/Widgets/SImGuiLayout.h

@@ -2,6 +2,7 @@
 
 #pragma once
 
+#include <Widgets/DeclarativeSyntaxSupport.h>
 #include <Widgets/SCompoundWidget.h>
 
 

Source/ImGui/Private/Widgets/SImGuiWidget.cpp

@@ -17,6 +17,11 @@
 #include "Utilities/ScopeGuards.h"
 
 #include <Engine/Console.h>
+#include <Engine/GameViewportClient.h>
+#include <Engine/LocalPlayer.h>
+#include <GameFramework/GameUserSettings.h>
+#include <SlateOptMacros.h>
+#include <Widgets/SViewport.h>
 
 #include <utility>
 

Source/ImGui/Private/Widgets/SImGuiWidget.h

@@ -5,6 +5,7 @@
 #include "ImGuiModuleDebug.h"
 #include "ImGuiModuleSettings.h"
 
+#include <Widgets/DeclarativeSyntaxSupport.h>
 #include <Widgets/SCompoundWidget.h>
 
 

Source/ImGui/Public/ImGuiDelegates.h

@@ -2,9 +2,11 @@
 
 #pragma once
 
-#include <Core.h>
+#include <Delegates/Delegate.h>
 
 
+class UWorld;
+
 /**
  * Delegates to ImGui debug events. World delegates are called once per frame during world updates and have invocation
  * lists cleared after their worlds become invalid. Multi-context delegates are called once for every updated world.