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9ccf699c97
+Created a custom syntax tokenizer for Hlsl Highlighter. The vanilla tokenizer does a greedy match, which can lead to cases like "FloatA" to be tokenized as "Float" and "A". The new tokenizer is more specific about when to check for a match +Added ISyntaxTokenizer to be used as a based class for all syntax tokenizers #jira UE-144112 #rb Halfdan.Ingvarsson #fyi Jamie.Dale #preflight skip [CL 19380707 by jack cai in ue5-main branch]
98 lines
3.4 KiB
C++
98 lines
3.4 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "SlateGlobals.h"
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#include "Styling/SlateTypes.h"
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#include "Styling/CoreStyle.h"
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#if WITH_FANCY_TEXT
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#include "Framework/Text/PlainTextLayoutMarshaller.h"
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#include "Framework/Text/SyntaxTokenizer.h"
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#endif
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class FTextLayout;
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#if WITH_FANCY_TEXT
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/**
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* Get/set the raw text to/from a text layout, and also inject syntax highlighting
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*/
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class SLATE_API FSyntaxHighlighterTextLayoutMarshaller : public FPlainTextLayoutMarshaller
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{
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public:
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virtual ~FSyntaxHighlighterTextLayoutMarshaller();
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// ITextLayoutMarshaller
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virtual void SetText(const FString& SourceString, FTextLayout& TargetTextLayout) override;
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virtual bool RequiresLiveUpdate() const override;
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void EnableSyntaxHighlighting(const bool bEnable);
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bool IsSyntaxHighlightingEnabled() const;
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protected:
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virtual void ParseTokens(const FString& SourceString, FTextLayout& TargetTextLayout, TArray<ISyntaxTokenizer::FTokenizedLine> TokenizedLines) = 0;
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FSyntaxHighlighterTextLayoutMarshaller(TSharedPtr< ISyntaxTokenizer > InTokenizer);
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/** Tokenizer used to style the text */
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TSharedPtr< ISyntaxTokenizer > Tokenizer;
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/** True if syntax highlighting is enabled, false to fallback to plain text */
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bool bSyntaxHighlightingEnabled;
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};
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/**
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* Get/set the raw text to/from a text layout, and also inject syntax highlighting for our rich-text markup
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*/
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class SLATE_API FRichTextSyntaxHighlighterTextLayoutMarshaller : public FSyntaxHighlighterTextLayoutMarshaller
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{
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public:
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struct FSyntaxTextStyle
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{
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FSyntaxTextStyle()
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: NormalTextStyle(FCoreStyle::Get().GetWidgetStyle<FTextBlockStyle>("SyntaxHighlight.Normal"))
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, NodeTextStyle(FCoreStyle::Get().GetWidgetStyle<FTextBlockStyle>("SyntaxHighlight.Node"))
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, NodeAttributeKeyTextStyle(FCoreStyle::Get().GetWidgetStyle<FTextBlockStyle>("SyntaxHighlight.NodeAttributeKey"))
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, NodeAttribueAssignmentTextStyle(FCoreStyle::Get().GetWidgetStyle<FTextBlockStyle>("SyntaxHighlight.NodeAttribueAssignment"))
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, NodeAttributeValueTextStyle(FCoreStyle::Get().GetWidgetStyle<FTextBlockStyle>("SyntaxHighlight.NodeAttributeValue"))
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{
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}
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FSyntaxTextStyle(const FTextBlockStyle& InNormalTextStyle, const FTextBlockStyle& InNodeTextStyle, const FTextBlockStyle& InNodeAttributeKeyTextStyle, const FTextBlockStyle& InNodeAttribueAssignmentTextStyle, const FTextBlockStyle& InNodeAttributeValueTextStyle)
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: NormalTextStyle(InNormalTextStyle)
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, NodeTextStyle(InNodeTextStyle)
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, NodeAttributeKeyTextStyle(InNodeAttributeKeyTextStyle)
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, NodeAttribueAssignmentTextStyle(InNodeAttribueAssignmentTextStyle)
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, NodeAttributeValueTextStyle(InNodeAttributeValueTextStyle)
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{
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}
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FTextBlockStyle NormalTextStyle;
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FTextBlockStyle NodeTextStyle;
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FTextBlockStyle NodeAttributeKeyTextStyle;
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FTextBlockStyle NodeAttribueAssignmentTextStyle;
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FTextBlockStyle NodeAttributeValueTextStyle;
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};
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static TSharedRef< FRichTextSyntaxHighlighterTextLayoutMarshaller > Create(const FSyntaxTextStyle& InSyntaxTextStyle);
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virtual ~FRichTextSyntaxHighlighterTextLayoutMarshaller();
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protected:
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virtual void ParseTokens(const FString& SourceString, FTextLayout& TargetTextLayout, TArray<ISyntaxTokenizer::FTokenizedLine> TokenizedLines) override;
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FRichTextSyntaxHighlighterTextLayoutMarshaller(TSharedPtr< ISyntaxTokenizer > InTokenizer, const FSyntaxTextStyle& InSyntaxTextStyle);
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/** Styles used to display the text */
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FSyntaxTextStyle SyntaxTextStyle;
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};
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#endif //WITH_FANCY_TEXT
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