StyleSpan

StyleSpan

import android.text.TextPaint;
import android.text.style.CharacterStyle;

/**
 * @author puke
 * @version 2020-11-10
 */
public class StyleSpan extends CharacterStyle {

    private final boolean bold;
    private final int size;
    private final int color;
    private final boolean underline;

    private StyleSpan(Builder builder) {
        bold = builder.bold;
        size = builder.size;
        color = builder.color;
        underline = builder.underline;
    }

    public static Builder builder() {
        return new Builder();
    }

    @Override
    public void updateDrawState(TextPaint tp) {
        tp.setFakeBoldText(bold);
        if (size > 0) {
            tp.setTextSize(size);
        }
        if (color > 0) {
            tp.setColor(color);
        }
        tp.setUnderlineText(underline);
    }

    public static final class Builder {
        private boolean bold = false;
        private int size = 0;
        private int color = 0;
        private boolean underline = false;

        private Builder() {
        }

        public Builder bold(boolean bold) {
            this.bold = bold;
            return this;
        }

        public Builder size(int size) {
            this.size = size;
            return this;
        }

        public Builder color(int color) {
            this.color = color;
            return this;
        }

        public Builder underline(boolean underline) {
            this.underline = underline;
            return this;
        }

        public StyleSpan build() {
            return new StyleSpan(this);
        }
    }
}