Method preprocess

widgets/segmentdisplay/segmentdisplay.go:186–203

preprocess determines the size of individual segments maximizing their height or the amount of displayed characters based on the specified options. Returns the area required for a single segment, the text that we can fit and size of gaps between segments in cells.

(cvsAr image.Rectangle)

// Returns the area required for a single segment, the text that we can fit and
// size of gaps between segments in cells.
func (sd *SegmentDisplay) preprocess(cvsAr image.Rectangle) (*segArea, error) {
	textLen := sd.buff.Len() // We're guaranteed by Write to only have ASCII characters.
	segAr, err := newSegArea(cvsAr, textLen, sd.opts.gapPercent)
	if err != nil {
		return nil, err
	}

	need := sd.buff.Len()
	if (need > 0 && need <= segAr.canFit) || sd.opts.maximizeSegSize {
		return segAr, nil
	}

	bestAr, err := maximizeFit(cvsAr, textLen, sd.opts.gapPercent)
	if err != nil {
		return nil, err
	}
	return bestAr, nil
}

// Draw draws the SegmentDisplay widget onto the canvas.
// Implements widgetapi.Widget.Draw.