cleanup, fixes and restructure

Source/UnicodeBrowser/UnicodeBrowserOptions.cpp

@@ -0,0 +1,41 @@
+// all rights reserved
+
+
+#include "UnicodeBrowserOptions.h"
+
+TSharedRef<IDetailsView> UUnicodeBrowserOptions::MakePropertyEditor(UUnicodeBrowserOptions* Options)
+{
+	FPropertyEditorModule& PropertyEditor = FModuleManager::Get().LoadModuleChecked<FPropertyEditorModule>(TEXT("PropertyEditor"));
+	FDetailsViewArgs DetailsViewArgs;
+	DetailsViewArgs.bAllowSearch = false;
+	DetailsViewArgs.bHideSelectionTip = true;
+	DetailsViewArgs.bShowModifiedPropertiesOption = false;
+	DetailsViewArgs.bShowScrollBar = false;
+	DetailsViewArgs.bShowOptions = false;
+	DetailsViewArgs.bShowObjectLabel = false;
+	DetailsViewArgs.bLockable = false;
+	auto FontDetailsView = PropertyEditor.CreateDetailView(DetailsViewArgs);
+	FontDetailsView->SetObject(Options);
+	return FontDetailsView;
+}
+
+void UUnicodeBrowserOptions::PostInitProperties()
+{
+	Super::PostInitProperties();
+	if (!Font.HasValidFont())
+	{
+		Font = FCoreStyle::GetDefaultFontStyle("Regular", 18);
+	}
+}
+
+void UUnicodeBrowserOptions::PostEditChangeProperty(struct FPropertyChangedEvent& PropertyChangedEvent)
+{
+	Super::PostEditChangeProperty(PropertyChangedEvent);
+
+	if (!Font.HasValidFont())
+	{
+		Font = FCoreStyle::GetDefaultFontStyle("Regular", 18);
+	}
+
+	OnChanged.Broadcast(&PropertyChangedEvent);
+}

Source/UnicodeBrowser/UnicodeBrowserOptions.h

@@ -0,0 +1,43 @@
+// all rights reserved
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "UObject/Object.h"
+#include "UnicodeBrowserOptions.generated.h"
+
+/**
+ * 
+ */
+UCLASS(Hidden, BlueprintType, EditInlineNew, DefaultToInstanced, DisplayName = "Font Options")
+class UNICODEBROWSER_API UUnicodeBrowserOptions : public UObject
+{
+	GENERATED_BODY()
+
+public:
+	static TSharedRef<class IDetailsView> MakePropertyEditor(UUnicodeBrowserOptions* Options);
+	UPROPERTY(EditAnywhere, meta=(ShowOnlyInnerProperties), Transient)
+	FSlateFontInfo Font = FCoreStyle::GetDefaultFontStyle("Regular", 18);
+
+	UPROPERTY(EditAnywhere)
+	int32 NumCols = 24;
+
+	// Show Characters which can't be displayed by the font (primary for debug purposes)
+	UPROPERTY(EditAnywhere)
+	bool bShowMissing = false;
+
+	// Show Characters which have a measurement of 0x0 (primary for debug purposes)
+	UPROPERTY(EditAnywhere)
+	bool bShowZeroSize = false;
+
+	// Cache the Character meta information while loading the font, this is slower while changing fonts, but may reduce delay for displaying character previews
+	UPROPERTY(EditAnywhere)
+	bool bCacheCharacterMetaOnLoad = false;
+
+	virtual void PostInitProperties() override;
+
+	virtual void PostEditChangeProperty(struct FPropertyChangedEvent& PropertyChangedEvent) override;
+
+	DECLARE_MULTICAST_DELEGATE_OneParam(FOnNumColsChangedDelegate, struct FPropertyChangedEvent*);
+	FOnNumColsChangedDelegate OnChanged;
+};

Source/UnicodeBrowser/UnicodeBrowserRow.h

@@ -0,0 +1,80 @@
+#pragma once
+#include "Fonts/UnicodeBlockRange.h"
+#include "Fonts/FontMeasure.h"
+
+class FUnicodeBrowserRow : public TSharedFromThis<FUnicodeBrowserRow>
+{
+public:
+	FUnicodeBrowserRow(int32 CodePointIn, TOptional<EUnicodeBlockRange> BlockRangeIn, FSlateFontInfo const *FontInfoIn = nullptr) : Codepoint(CodePointIn), BlockRange(BlockRangeIn), FontInfo(FontInfoIn)
+	{		
+		FUnicodeChar::CodepointToString(Codepoint, Character);
+	}
+
+	FString Character;			
+	int32 Codepoint = 0;
+	TOptional<EUnicodeBlockRange> BlockRange;	
+
+private:
+	FSlateFontInfo const *FontInfo = nullptr;
+	const FFontData *FontData = nullptr;
+	TOptional<float> ScalingFactor;
+	TOptional<FVector2D> Measurements;
+	TOptional<bool> bCanLoadCodepoint;
+
+
+public:	
+	const FFontData* GetFontData()
+	{
+		if(!FontData && FontInfo)
+		{
+			float ScalingFactorResult;
+			FontData = &FSlateApplication::Get().GetRenderer()->GetFontCache()->GetFontDataForCodepoint(*FontInfo, Codepoint, ScalingFactorResult);
+			ScalingFactor = ScalingFactorResult;
+		}
+
+		return FontData;
+	}
+
+	bool CanLoadCodepoint()
+	{
+		if(!bCanLoadCodepoint.IsSet() && GetFontData()){
+			bCanLoadCodepoint = FSlateApplication::Get().GetRenderer()->GetFontCache()->CanLoadCodepoint(*FontData, Codepoint);			
+		}
+
+		return bCanLoadCodepoint.Get(false);
+	}
+
+	FVector2D GetMeasurements()
+	{
+		if(!Measurements.IsSet() && FontInfo){	
+			Measurements = FSlateApplication::Get().GetRenderer()->GetFontMeasureService()->Measure(*Character, *FontInfo);			
+		}
+
+		return Measurements.Get(FVector2D::ZeroVector);
+	}
+
+	float GetScaling()
+	{
+		if(!ScalingFactor.IsSet())
+		{
+			// this will try to populate the ScalingFactor
+			GetFontData();
+		}
+
+		return ScalingFactor.Get(0.0f);
+	}
+
+
+	friend bool operator==(FUnicodeBrowserRow const& Lhs, FUnicodeBrowserRow const& RHS)
+	{
+		return Lhs.Codepoint == RHS.Codepoint
+			&& Lhs.Character == RHS.Character
+			&& Lhs.BlockRange == RHS.BlockRange
+			&& Lhs.FontData == RHS.FontData
+			&& Lhs.ScalingFactor == RHS.ScalingFactor
+			&& Lhs.Measurements == RHS.Measurements
+			&& Lhs.bCanLoadCodepoint == RHS.bCanLoadCodepoint;
+	}
+
+	friend bool operator!=(FUnicodeBrowserRow const& Lhs, FUnicodeBrowserRow const& RHS) { return !(Lhs == RHS); }
+};