#include <paragraph_skia.h>

Inheritance diagram for txt::ParagraphSkia:

Public Member Functions
	ParagraphSkia (std::unique_ptr< skia::textlayout::Paragraph > paragraph, std::vector< flutter::DlPaint > &&dl_paints, bool impeller_enabled)

virtual	~ParagraphSkia ()=default

double	GetMaxWidth () override

double	GetHeight () override

double	GetLongestLine () override

double	GetMinIntrinsicWidth () override

double	GetMaxIntrinsicWidth () override

double	GetAlphabeticBaseline () override

double	GetIdeographicBaseline () override

std::vector< LineMetrics > &	GetLineMetrics () override

bool	GetLineMetricsAt (int lineNumber, skia::textlayout::LineMetrics *lineMetrics) const override

size_t	GetNumberOfLines () const override

int	GetLineNumberAt (size_t utf16Offset) const override

bool	DidExceedMaxLines () override

void	Layout (double width) override

bool	Paint (flutter::DisplayListBuilder *builder, double x, double y) override

std::vector< TextBox >	GetRectsForRange (size_t start, size_t end, RectHeightStyle rect_height_style, RectWidthStyle rect_width_style) override

std::vector< TextBox >	GetRectsForPlaceholders () override

PositionWithAffinity	GetGlyphPositionAtCoordinate (double dx, double dy) override

bool	GetGlyphInfoAt (unsigned offset, skia::textlayout::Paragraph::GlyphInfo *glyphInfo) const override

bool	GetClosestGlyphInfoAtCoordinate (double dx, double dy, skia::textlayout::Paragraph::GlyphInfo *glyphInfo) const override

Range< size_t >	GetWordBoundary (size_t offset) override

Public Member Functions inherited from flutter::Paragraph
	~Paragraph () override

double	width ()

double	height ()

double	longestLine ()

double	minIntrinsicWidth ()

double	maxIntrinsicWidth ()

double	alphabeticBaseline ()

double	ideographicBaseline ()

bool	didExceedMaxLines ()

void	layout (double width)

void	paint (Canvas *canvas, double x, double y)

tonic::Float32List	getRectsForRange (unsigned start, unsigned end, unsigned boxHeightStyle, unsigned boxWidthStyle)

tonic::Float32List	getRectsForPlaceholders ()

Dart_Handle	getPositionForOffset (double dx, double dy)

Dart_Handle	getGlyphInfoAt (unsigned utf16Offset, Dart_Handle constructor) const

Dart_Handle	getClosestGlyphInfo (double dx, double dy, Dart_Handle constructor) const

Dart_Handle	getWordBoundary (unsigned offset)

Dart_Handle	getLineBoundary (unsigned offset)

tonic::Float64List	computeLineMetrics () const

Dart_Handle	getLineMetricsAt (int lineNumber, Dart_Handle constructor) const

size_t	getNumberOfLines () const

int	getLineNumberAt (size_t utf16Offset) const

void	dispose ()

Public Member Functions inherited from flutter::RefCountedDartWrappable< Paragraph >
virtual void	RetainDartWrappableReference () const override

virtual void	ReleaseDartWrappableReference () const override

Public Member Functions inherited from fml::RefCountedThreadSafe< T >
void	Release () const

Public Member Functions inherited from fml::internal::RefCountedThreadSafeBase
void	AddRef () const

bool	HasOneRef () const

void	AssertHasOneRef () const

Public Member Functions inherited from tonic::DartWrappable
	DartWrappable ()

virtual const DartWrapperInfo &	GetDartWrapperInfo () const =0

Dart_Handle	CreateDartWrapper (DartState *dart_state)

void	AssociateWithDartWrapper (Dart_Handle wrappable)

void	ClearDartWrapper ()

Dart_WeakPersistentHandle	dart_wrapper () const

Additional Inherited Members
Public Types inherited from tonic::DartWrappable
enum	DartNativeFields { kPeerIndex , kNumberOfNativeFields }

Static Public Member Functions inherited from flutter::Paragraph
static void	Create (Dart_Handle paragraph_handle, std::unique_ptr< txt::Paragraph > txt_paragraph)

Protected Member Functions inherited from fml::RefCountedThreadSafe< T >
	RefCountedThreadSafe ()

	~RefCountedThreadSafe ()

Protected Member Functions inherited from fml::internal::RefCountedThreadSafeBase
	RefCountedThreadSafeBase ()

	~RefCountedThreadSafeBase ()

bool	Release () const

void	Adopt ()

Protected Member Functions inherited from tonic::DartWrappable
virtual	~DartWrappable ()

Static Protected Member Functions inherited from tonic::DartWrappable
static Dart_PersistentHandle	GetTypeForWrapper (tonic::DartState *dart_state, const tonic::DartWrapperInfo &wrapper_info)

Detailed Description

Definition at line 29 of file paragraph_skia.h.

Constructor & Destructor Documentation

◆ ParagraphSkia()

txt::ParagraphSkia::ParagraphSkia	(	std::unique_ptr< skia::textlayout::Paragraph >	paragraph,
		std::vector< flutter::DlPaint > &&	dl_paints,
		bool	impeller_enabled
	)

Definition at line 246 of file paragraph_skia.cc.

    : paragraph_(std::move(paragraph)),
      dl_paints_(dl_paints),
      impeller_enabled_(impeller_enabled) {}

◆ ~ParagraphSkia()

virtual txt::ParagraphSkia::~ParagraphSkia ( )

virtualdefault

Member Function Documentation

◆ DidExceedMaxLines()

bool txt::ParagraphSkia::DidExceedMaxLines ( )

override

Definition at line 325 of file paragraph_skia.cc.

                                      {
  return paragraph_->didExceedMaxLines();
}

◆ GetAlphabeticBaseline()

double txt::ParagraphSkia::GetAlphabeticBaseline ( )

override

Definition at line 317 of file paragraph_skia.cc.

                                            {
  return SkScalarToDouble(paragraph_->getAlphabeticBaseline());
}

◆ GetClosestGlyphInfoAtCoordinate()

bool txt::ParagraphSkia::GetClosestGlyphInfoAtCoordinate	(	double	dx,
		double	dy,
		skia::textlayout::Paragraph::GlyphInfo *	glyphInfo
	)		const

override

Definition at line 387 of file paragraph_skia.cc.

                                                       {
  return paragraph_->getClosestUTF16GlyphInfoAt(dx, dy, glyphInfo);
};

◆ GetGlyphInfoAt()

bool txt::ParagraphSkia::GetGlyphInfoAt	(	unsigned	offset,
		skia::textlayout::Paragraph::GlyphInfo *	glyphInfo
	)		const

override

Definition at line 381 of file paragraph_skia.cc.

                                                       {
  return paragraph_->getGlyphInfoAtUTF16Offset(offset, glyphInfo);
}

◆ GetGlyphPositionAtCoordinate()

Paragraph::PositionWithAffinity txt::ParagraphSkia::GetGlyphPositionAtCoordinate	(	double	dx,
		double	dy
	)

override

Definition at line 371 of file paragraph_skia.cc.

               {
  skt::PositionWithAffinity skia_pos =
      paragraph_->getGlyphPositionAtCoordinate(dx, dy);
 
  return ParagraphSkia::PositionWithAffinity(
      skia_pos.position, static_cast<Affinity>(skia_pos.affinity));
}

◆ GetHeight()

double txt::ParagraphSkia::GetHeight ( )

override

Definition at line 257 of file paragraph_skia.cc.

                                {
  return SkScalarToDouble(paragraph_->getHeight());
}

◆ GetIdeographicBaseline()

double txt::ParagraphSkia::GetIdeographicBaseline ( )

override

Definition at line 321 of file paragraph_skia.cc.

                                             {
  return SkScalarToDouble(paragraph_->getIdeographicBaseline());
}

◆ GetLineMetrics()

std::vector< LineMetrics > & txt::ParagraphSkia::GetLineMetrics ( )

override

Definition at line 265 of file paragraph_skia.cc.

                                                      {
  if (!line_metrics_) {
    std::vector<skt::LineMetrics> metrics;
    paragraph_->getLineMetrics(metrics);
 
    line_metrics_.emplace();
    line_metrics_styles_.reserve(
        std::accumulate(metrics.begin(), metrics.end(), 0,
                        [](const int a, const skt::LineMetrics& b) {
                          return a + b.fLineMetrics.size();
                        }));
 
    for (const skt::LineMetrics& skm : metrics) {
      LineMetrics& txtm = line_metrics_->emplace_back(
          skm.fStartIndex, skm.fEndIndex, skm.fEndExcludingWhitespaces,
          skm.fEndIncludingNewline, skm.fHardBreak);
      txtm.ascent = skm.fAscent;
      txtm.descent = skm.fDescent;
      txtm.unscaled_ascent = skm.fUnscaledAscent;
      txtm.height = skm.fHeight;
      txtm.width = skm.fWidth;
      txtm.left = skm.fLeft;
      txtm.baseline = skm.fBaseline;
      txtm.line_number = skm.fLineNumber;
 
      for (const auto& sk_iter : skm.fLineMetrics) {
        const skt::StyleMetrics& sk_style_metrics = sk_iter.second;
        line_metrics_styles_.push_back(SkiaToTxt(*sk_style_metrics.text_style));
        txtm.run_metrics.emplace(
            std::piecewise_construct, std::forward_as_tuple(sk_iter.first),
            std::forward_as_tuple(&line_metrics_styles_.back(),
                                  sk_style_metrics.font_metrics));
      }
    }
  }
 
  return line_metrics_.value();
}

◆ GetLineMetricsAt()

bool txt::ParagraphSkia::GetLineMetricsAt	(	int	lineNumber,
		skia::textlayout::LineMetrics *	lineMetrics
	)		const

override

Definition at line 304 of file paragraph_skia.cc.

                                                                        {
  return paragraph_->getLineMetricsAt(lineNumber, lineMetrics);
};

◆ GetLineNumberAt()

int txt::ParagraphSkia::GetLineNumberAt ( size_t utf16Offset ) const

override

Definition at line 403 of file paragraph_skia.cc.

                                                             {
  return paragraph_->getLineNumberAtUTF16Offset(codeUnitIndex);
}

◆ GetLongestLine()

double txt::ParagraphSkia::GetLongestLine ( )

override

Definition at line 261 of file paragraph_skia.cc.

                                     {
  return SkScalarToDouble(paragraph_->getLongestLine());
}

◆ GetMaxIntrinsicWidth()

double txt::ParagraphSkia::GetMaxIntrinsicWidth ( )

override

Definition at line 313 of file paragraph_skia.cc.

                                           {
  return SkScalarToDouble(paragraph_->getMaxIntrinsicWidth());
}

◆ GetMaxWidth()

double txt::ParagraphSkia::GetMaxWidth ( )

override

Definition at line 253 of file paragraph_skia.cc.

                                  {
  return SkScalarToDouble(paragraph_->getMaxWidth());
}

◆ GetMinIntrinsicWidth()

double txt::ParagraphSkia::GetMinIntrinsicWidth ( )

override

Definition at line 309 of file paragraph_skia.cc.

                                           {
  return SkScalarToDouble(paragraph_->getMinIntrinsicWidth());
}

◆ GetNumberOfLines()

size_t txt::ParagraphSkia::GetNumberOfLines ( ) const

override

Definition at line 399 of file paragraph_skia.cc.

                                             {
  return paragraph_->lineNumber();
}

◆ GetRectsForPlaceholders()

std::vector< Paragraph::TextBox > txt::ParagraphSkia::GetRectsForPlaceholders ( )

override

Definition at line 359 of file paragraph_skia.cc.

                                                                   {
  std::vector<skt::TextBox> skia_boxes = paragraph_->getRectsForPlaceholders();
 
  std::vector<Paragraph::TextBox> boxes;
  for (const skt::TextBox& skia_box : skia_boxes) {
    boxes.emplace_back(skia_box.rect,
                       static_cast<TextDirection>(skia_box.direction));
  }
 
  return boxes;
}

◆ GetRectsForRange()

std::vector< Paragraph::TextBox > txt::ParagraphSkia::GetRectsForRange	(	size_t	start,
		size_t	end,
		RectHeightStyle	rect_height_style,
		RectWidthStyle	rect_width_style
	)

override

Definition at line 341 of file paragraph_skia.cc.

                                     {
  std::vector<skt::TextBox> skia_boxes = paragraph_->getRectsForRange(
      start, end, static_cast<skt::RectHeightStyle>(rect_height_style),
      static_cast<skt::RectWidthStyle>(rect_width_style));
 
  std::vector<Paragraph::TextBox> boxes;
  for (const skt::TextBox& skia_box : skia_boxes) {
    boxes.emplace_back(skia_box.rect,
                       static_cast<TextDirection>(skia_box.direction));
  }
 
  return boxes;
}

◆ GetWordBoundary()

Paragraph::Range< size_t > txt::ParagraphSkia::GetWordBoundary ( size_t offset )

override

Definition at line 394 of file paragraph_skia.cc.

                                                                   {
  skt::SkRange<size_t> range = paragraph_->getWordBoundary(offset);
  return Paragraph::Range<size_t>(range.start, range.end);
}

◆ Layout()

void txt::ParagraphSkia::Layout ( double width )

override

Definition at line 329 of file paragraph_skia.cc.

                                       {
  line_metrics_.reset();
  line_metrics_styles_.clear();
  paragraph_->layout(width);
}

◆ Paint()

bool txt::ParagraphSkia::Paint	(	flutter::DisplayListBuilder *	builder,
		double	x,
		double	y
	)

override

Definition at line 335 of file paragraph_skia.cc.

                                                                         {
  DisplayListParagraphPainter painter(builder, dl_paints_, impeller_enabled_);
  paragraph_->paint(&painter, x, y);
  return true;
}

The documentation for this class was generated from the following files:

third_party/txt/src/skia/paragraph_skia.h
third_party/txt/src/skia/paragraph_skia.cc

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ParagraphSkia()

◆ ~ParagraphSkia()

Member Function Documentation

◆ DidExceedMaxLines()

◆ GetAlphabeticBaseline()

◆ GetClosestGlyphInfoAtCoordinate()

◆ GetGlyphInfoAt()

◆ GetGlyphPositionAtCoordinate()

◆ GetHeight()

◆ GetIdeographicBaseline()

◆ GetLineMetrics()

◆ GetLineMetricsAt()

◆ GetLineNumberAt()

◆ GetLongestLine()

◆ GetMaxIntrinsicWidth()

◆ GetMaxWidth()

◆ GetMinIntrinsicWidth()

◆ GetNumberOfLines()

◆ GetRectsForPlaceholders()

◆ GetRectsForRange()

◆ GetWordBoundary()

◆ Layout()

◆ Paint()