public class

LetterSpacingSpan

extends MetricAffectingSpan

 java.lang.Object

↳MetricAffectingSpan

↳androidx.wear.protolayout.renderer.inflater.LetterSpacingSpan

Gradle dependencies

compile group: 'androidx.wear.protolayout', name: 'protolayout-renderer', version: '1.2.0'

  • groupId: androidx.wear.protolayout
  • artifactId: protolayout-renderer
  • version: 1.2.0

Artifact androidx.wear.protolayout:protolayout-renderer:1.2.0 it located at Google repository (https://maven.google.com/)

Overview

LetterSpacingSpan class used to apply custom spacing between letters.

Summary

Constructors
publicLetterSpacingSpan(float letterSpacingEm)

Methods
public voidupdateDrawState(TextPaint textPaint)

public voidupdateMeasureState(TextPaint textPaint)

from java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructors

public LetterSpacingSpan(float letterSpacingEm)

Parameters:

letterSpacingEm: letter-spacing for text.

Methods

public void updateDrawState(TextPaint textPaint)

public void updateMeasureState(TextPaint textPaint)

Source

/*
 * Copyright 2021 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.wear.protolayout.renderer.inflater;

import android.text.TextPaint;
import android.text.style.MetricAffectingSpan;

import androidx.annotation.NonNull;

/** LetterSpacingSpan class used to apply custom spacing between letters. */
public class LetterSpacingSpan extends MetricAffectingSpan {

    private final float mLetterSpacingEm;

    /**
     * @param letterSpacingEm letter-spacing for text.
     */
    public LetterSpacingSpan(float letterSpacingEm) {
        this.mLetterSpacingEm = letterSpacingEm;
    }

    @Override
    public void updateDrawState(@NonNull TextPaint textPaint) {
        updateTextPaint(textPaint);
    }

    @Override
    public void updateMeasureState(@NonNull TextPaint textPaint) {
        updateTextPaint(textPaint);
    }

    private void updateTextPaint(@NonNull TextPaint textPaint) {
        textPaint.setLetterSpacing(mLetterSpacingEm);
    }
}