skia::textlayout::Decorations Class Reference

#include <Decorations.h>

Public Member Functions
void	paint (ParagraphPainter *painter, const TextStyle &textStyle, const TextLine::ClipContext &context, SkScalar baseline)

Detailed Description

Definition at line 13 of file Decorations.h.

Member Function Documentation

paint()

void skia::textlayout::Decorations::paint	(	ParagraphPainter *	painter,
		const TextStyle &	textStyle,
		const TextLine::ClipContext &	context,
		SkScalar	baseline
	)

Definition at line 24 of file Decorations.cpp.

                                                                                                                                    {
    if (textStyle.getDecorationType() == TextDecoration::kNoDecoration) {
        return;
    }
 
    // Get thickness and position
    calculateThickness(textStyle, context.run->font().refTypeface());
 
    for (auto decoration : AllTextDecorations) {
        if ((textStyle.getDecorationType() & decoration) == 0) {
            continue;
        }
 
        calculatePosition(decoration,
                          decoration == TextDecoration::kOverline
                          ? context.run->correctAscent() - context.run->ascent()
                          : context.run->correctAscent());
 
        calculatePaint(textStyle);
 
        auto width = context.clip.width();
        SkScalar x = context.clip.left();
        SkScalar y = context.clip.top() + fPosition;
 
        bool drawGaps = textStyle.getDecorationMode() == TextDecorationMode::kGaps &&
                        textStyle.getDecorationType() == TextDecoration::kUnderline;
 
        switch (textStyle.getDecorationStyle()) {
          case TextDecorationStyle::kWavy: {
              calculateWaves(textStyle, context.clip);
              fPath.offset(x, y);
              painter->drawPath(fPath, fDecorStyle);
              break;
          }
          case TextDecorationStyle::kDouble: {
              SkScalar bottom = y + kDoubleDecorationSpacing;
              if (drawGaps) {
                  SkScalar left = x - context.fTextShift;
                  painter->translate(context.fTextShift, 0);
                  calculateGaps(context, SkRect::MakeXYWH(left, y, width, fThickness), baseline, fThickness);
                  painter->drawPath(fPath, fDecorStyle);
                  calculateGaps(context, SkRect::MakeXYWH(left, bottom, width, fThickness), baseline, fThickness);
                  painter->drawPath(fPath, fDecorStyle);
              } else {
                  draw_line_as_rect(painter, x,      y, width, fDecorStyle);
                  draw_line_as_rect(painter, x, bottom, width, fDecorStyle);
              }
              break;
          }
          case TextDecorationStyle::kDashed:
          case TextDecorationStyle::kDotted:
              if (drawGaps) {
                  SkScalar left = x - context.fTextShift;
                  painter->translate(context.fTextShift, 0);
                  calculateGaps(context, SkRect::MakeXYWH(left, y, width, fThickness), baseline, 0);
                  painter->drawPath(fPath, fDecorStyle);
              } else {
                  painter->drawLine(x, y, x + width, y, fDecorStyle);
              }
              break;
          case TextDecorationStyle::kSolid:
              if (drawGaps) {
                  SkScalar left = x - context.fTextShift;
                  painter->translate(context.fTextShift, 0);
                  calculateGaps(context, SkRect::MakeXYWH(left, y, width, fThickness), baseline, fThickness);
                  painter->drawPath(fPath, fDecorStyle);
              } else {
                  draw_line_as_rect(painter, x, y, width, fDecorStyle);
              }
              break;
          default:break;
        }
    }
}

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

• third_party/skia/modules/skparagraph/src/Decorations.h
• third_party/skia/modules/skparagraph/src/Decorations.cpp