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Extracted functions

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This commit is contained in:
lumpn 2023-04-20 13:15:09 +08:00
parent e41fbbeb89
commit 4805f49ccb
2 changed files with 52 additions and 45 deletions
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93
Source/StevesUEHelpers/Private/StevesUI/TypewriterTextWidget.cpp
View File

@ -120,55 +120,20 @@ void UTypewriterTextWidget::PlayNextLinePart(float Speed)
CalculateWrappedString(RemainingLinePart);
// TODO Jonas: Promote maxLines to variable. Might want maxLines = 1 for text before choices.
int maxLines = 3;
if (NumberOfLines > maxLines)
// TODO Jonas: Promote MaxLines to variable. Might want MaxLines = 1 for text before choices.
int MaxLines = 3;
if (NumberOfLines > MaxLines)
{
int numLetters = 0;
int currentLine = 1;
for (int i = 0; i < Segments.Num(); i++)
{
const auto& segment = Segments[i];
// TODO Jonas: Mark line break segments in CalculateWrappedString instead.
if (segment.Text.Equals(FString(TEXT("\n"))))
{
currentLine++;
if (currentLine > maxLines)
{
break;
}
}
else
{
numLetters += segment.Text.Len();
}
}
int MaxLength = CalculateMaxLength(MaxLines);
int TerminatorIndex = FindLastTerminator(RemainingLinePart, MaxLength);
int Length = TerminatorIndex + 1;
const FString& FirstLinePart = RemainingLinePart.Left(Length);
// TODO Jonas: Find lesser terminators like commas or spaces if no sentence terminator can be found.
int lastTerminator = RemainingLinePart.FindLastCharByPredicate(IsSentenceTerminator, numLetters);
if (lastTerminator != INDEX_NONE)
{
int count = lastTerminator + 1;
const FString& shortenedString = RemainingLinePart.Left(count);
CalculateWrappedString(FirstLinePart);
// TODO Jonas: Clean up
CurrentRunName = "";
CurrentLetterIndex = 0;
CachedLetterIndex = 0;
CurrentSegmentIndex = 0;
MaxLetterIndex = 0;
NumberOfLines = 0;
CombinedTextHeight = 0;
CurrentPlaySpeed = Speed;
Segments.Empty();
CachedSegmentText.Empty();
CalculateWrappedString(shortenedString);
RemainingLinePart.RightChopInline(count);
RemainingLinePart.RightChopInline(Length);
bHasMoreLineParts = true;
}
}
FTimerDelegate Delegate;
Delegate.BindUObject(this, &ThisClass::PlayNextLetter);
@ -243,6 +208,43 @@ bool UTypewriterTextWidget::IsSentenceTerminator(TCHAR Letter)
return Letter == '.' || Letter == '!' || Letter == '?';
}
int UTypewriterTextWidget::FindLastTerminator(const FString& CurrentLineString, int Count)
{
// TODO Jonas: Find lesser terminators like commas or spaces if no sentence terminator can be found.
int TerminatorIndex = CurrentLineString.FindLastCharByPredicate(IsSentenceTerminator, Count);
if (TerminatorIndex != INDEX_NONE)
{
return TerminatorIndex;
}
return Count;
}
int UTypewriterTextWidget::CalculateMaxLength(int MaxNumberOfLines)
{
int MaxLength = 0;
int CurrentNumberOfLines = 1;
for (int i = 0; i < Segments.Num(); i++)
{
const FTypewriterTextSegment& Segment = Segments[i];
// TODO Jonas: Mark line break segments as such in CalculateWrappedString instead.
if (Segment.Text.Equals(FString(TEXT("\n"))))
{
CurrentNumberOfLines++;
if (CurrentNumberOfLines > MaxNumberOfLines)
{
break;
}
}
else
{
MaxLength += Segment.Text.Len();
}
}
return MaxLength;
}
void UTypewriterTextWidget::CalculateWrappedString(const FString& CurrentLineString)
{
// Rich Text views give you:
@ -252,6 +254,9 @@ void UTypewriterTextWidget::CalculateWrappedString(const FString& CurrentLineStr
// - The newlines we add are the only newlines in the output so that's the number of lines
// If we've got here, that means the text isn't empty so 1 line at least
NumberOfLines = 1;
MaxLetterIndex = 0;
CombinedTextHeight = 0;
Segments.Empty();
if (IsValid(LineText) && LineText->GetTextLayout().IsValid())
{
TSharedPtr<FSlateTextLayout> Layout = LineText->GetTextLayout();

2
Source/StevesUEHelpers/Public/StevesUI/TypewriterTextWidget.h
View File

@ -131,7 +131,9 @@ protected:
private:
void PlayNextLetter();
static bool IsSentenceTerminator(TCHAR Letter);
static int FindLastTerminator(const FString& CurrentLineString, int Count);
int CalculateMaxLength(int MaxNumberOfLines);
void CalculateWrappedString(const FString& CurrentLineString);
FString CalculateSegments(FString* OutCurrentRunName);