mirror of
https://github.com/material-components/material-components-android.git
synced 2026-02-03 16:33:36 +08:00
b12f4dee49
Open an itemTextAppearance attribute and two attributes for active and inactive label sizes to allow customizing the label text sizes. The Widget.MaterialComponents.BottomNavigationView styles now defaults to AppCompat's Caption sizing (12sp) for both the active and inactive label sizes. PiperOrigin-RevId: 181399525
321 lines
10 KiB
Java
321 lines
10 KiB
Java
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.support.design.internal;
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import static android.support.annotation.RestrictTo.Scope.LIBRARY_GROUP;
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import android.content.Context;
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import android.content.res.ColorStateList;
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import android.content.res.Resources;
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import android.graphics.drawable.Drawable;
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import android.support.annotation.NonNull;
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import android.support.annotation.RestrictTo;
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import android.support.annotation.StyleRes;
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import android.support.design.bottomnavigation.LabelVisibilityMode;
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import android.support.v4.content.ContextCompat;
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import android.support.v4.graphics.drawable.DrawableCompat;
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import android.support.v4.view.PointerIconCompat;
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import android.support.v4.view.ViewCompat;
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import android.support.v4.widget.TextViewCompat;
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import android.support.v7.view.menu.MenuItemImpl;
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import android.support.v7.view.menu.MenuView;
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import android.support.v7.widget.TooltipCompat;
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import android.util.AttributeSet;
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import android.util.TypedValue;
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import android.view.Gravity;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.widget.FrameLayout;
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import android.widget.ImageView;
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import android.widget.TextView;
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/** @hide */
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@RestrictTo(LIBRARY_GROUP)
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public class BottomNavigationItemView extends FrameLayout implements MenuView.ItemView {
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public static final int INVALID_ITEM_POSITION = -1;
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private static final int[] CHECKED_STATE_SET = {android.R.attr.state_checked};
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private final int defaultMargin;
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private float shiftAmount;
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private float scaleUpFactor;
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private float scaleDownFactor;
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private boolean shiftingMode;
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private int labelVisibilityMode;
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private ImageView icon;
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private final TextView smallLabel;
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private final TextView largeLabel;
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private int itemPosition = INVALID_ITEM_POSITION;
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private MenuItemImpl itemData;
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private ColorStateList iconTint;
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public BottomNavigationItemView(@NonNull Context context) {
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this(context, null);
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}
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public BottomNavigationItemView(@NonNull Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public BottomNavigationItemView(Context context, AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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final Resources res = getResources();
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LayoutInflater.from(context).inflate(R.layout.design_bottom_navigation_item, this, true);
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setBackgroundResource(R.drawable.design_bottom_navigation_item_background);
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defaultMargin = res.getDimensionPixelSize(R.dimen.design_bottom_navigation_margin);
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icon = findViewById(R.id.icon);
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smallLabel = findViewById(R.id.smallLabel);
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largeLabel = findViewById(R.id.largeLabel);
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calculateTextScaleFactors(smallLabel.getTextSize(), largeLabel.getTextSize());
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}
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@Override
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public void initialize(MenuItemImpl itemData, int menuType) {
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this.itemData = itemData;
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setCheckable(itemData.isCheckable());
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setChecked(itemData.isChecked());
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setEnabled(itemData.isEnabled());
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setIcon(itemData.getIcon());
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setTitle(itemData.getTitle());
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setId(itemData.getItemId());
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setContentDescription(itemData.getContentDescription());
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TooltipCompat.setTooltipText(this, itemData.getTooltipText());
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setVisibility(itemData.isVisible() ? View.VISIBLE : View.GONE);
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}
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public void setItemPosition(int position) {
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itemPosition = position;
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}
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public int getItemPosition() {
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return itemPosition;
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}
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public void setShiftingMode(boolean enabled) {
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if (shiftingMode != enabled) {
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shiftingMode = enabled;
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boolean initialized = itemData != null;
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if (initialized) {
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setChecked(itemData.isChecked());
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}
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}
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}
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public void setLabelVisibilityMode(@LabelVisibilityMode int mode) {
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if (labelVisibilityMode != mode) {
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labelVisibilityMode = mode;
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boolean initialized = itemData != null;
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if (initialized) {
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setChecked(itemData.isChecked());
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}
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}
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}
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@Override
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public MenuItemImpl getItemData() {
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return itemData;
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}
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@Override
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public void setTitle(CharSequence title) {
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smallLabel.setText(title);
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largeLabel.setText(title);
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}
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@Override
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public void setCheckable(boolean checkable) {
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refreshDrawableState();
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}
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@Override
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public void setChecked(boolean checked) {
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largeLabel.setPivotX(largeLabel.getWidth() / 2);
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largeLabel.setPivotY(largeLabel.getBaseline());
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smallLabel.setPivotX(smallLabel.getWidth() / 2);
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smallLabel.setPivotY(smallLabel.getBaseline());
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switch (labelVisibilityMode) {
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case LabelVisibilityMode.LABEL_VISIBILITY_LEGACY:
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if (shiftingMode) {
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if (checked) {
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setViewLayoutParams(icon, defaultMargin, Gravity.CENTER_HORIZONTAL | Gravity.TOP);
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setViewValues(largeLabel, 1f, 1f, VISIBLE);
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} else {
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setViewLayoutParams(icon, defaultMargin, Gravity.CENTER);
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setViewValues(largeLabel, 0.5f, 0.5f, INVISIBLE);
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}
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smallLabel.setVisibility(INVISIBLE);
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} else {
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if (checked) {
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setViewLayoutParams(
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icon, (int) (defaultMargin + shiftAmount), Gravity.CENTER_HORIZONTAL | Gravity.TOP);
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setViewValues(largeLabel, 1f, 1f, VISIBLE);
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setViewValues(smallLabel, scaleUpFactor, scaleUpFactor, INVISIBLE);
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} else {
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setViewLayoutParams(icon, defaultMargin, Gravity.CENTER_HORIZONTAL | Gravity.TOP);
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setViewValues(largeLabel, scaleDownFactor, scaleDownFactor, INVISIBLE);
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setViewValues(smallLabel, 1f, 1f, VISIBLE);
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}
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}
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break;
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case LabelVisibilityMode.LABEL_VISIBILITY_SELECTED:
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if (checked) {
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setViewLayoutParams(icon, defaultMargin, Gravity.CENTER_HORIZONTAL | Gravity.TOP);
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setViewValues(largeLabel, 1f, 1f, VISIBLE);
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} else {
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setViewLayoutParams(icon, defaultMargin, Gravity.CENTER);
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setViewValues(largeLabel, 0.5f, 0.5f, INVISIBLE);
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}
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smallLabel.setVisibility(INVISIBLE);
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break;
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case LabelVisibilityMode.LABEL_VISIBILITY_LABELED:
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if (checked) {
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setViewLayoutParams(
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icon, (int) (defaultMargin + shiftAmount), Gravity.CENTER_HORIZONTAL | Gravity.TOP);
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setViewValues(largeLabel, 1f, 1f, VISIBLE);
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setViewValues(smallLabel, scaleUpFactor, scaleUpFactor, INVISIBLE);
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} else {
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setViewLayoutParams(icon, defaultMargin, Gravity.CENTER_HORIZONTAL | Gravity.TOP);
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setViewValues(largeLabel, scaleDownFactor, scaleDownFactor, INVISIBLE);
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setViewValues(smallLabel, 1f, 1f, VISIBLE);
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}
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break;
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case LabelVisibilityMode.LABEL_VISIBILITY_UNLABELED:
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setViewLayoutParams(icon, defaultMargin, Gravity.CENTER);
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largeLabel.setVisibility(GONE);
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smallLabel.setVisibility(GONE);
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break;
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default:
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break;
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}
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refreshDrawableState();
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}
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private void setViewLayoutParams(@NonNull View view, int topMargin, int gravity) {
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LayoutParams viewParams = (LayoutParams) view.getLayoutParams();
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viewParams.topMargin = topMargin;
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viewParams.gravity = gravity;
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view.setLayoutParams(viewParams);
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}
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private void setViewValues(@NonNull View view, float scaleX, float scaleY, int visibility) {
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view.setScaleX(scaleX);
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view.setScaleY(scaleY);
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view.setVisibility(visibility);
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}
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@Override
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public void setEnabled(boolean enabled) {
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super.setEnabled(enabled);
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smallLabel.setEnabled(enabled);
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largeLabel.setEnabled(enabled);
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icon.setEnabled(enabled);
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if (enabled) {
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ViewCompat.setPointerIcon(
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this, PointerIconCompat.getSystemIcon(getContext(), PointerIconCompat.TYPE_HAND));
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} else {
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ViewCompat.setPointerIcon(this, null);
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}
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}
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@Override
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public int[] onCreateDrawableState(final int extraSpace) {
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final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
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if (itemData != null && itemData.isCheckable() && itemData.isChecked()) {
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mergeDrawableStates(drawableState, CHECKED_STATE_SET);
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}
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return drawableState;
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}
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@Override
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public void setShortcut(boolean showShortcut, char shortcutKey) {}
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@Override
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public void setIcon(Drawable icon) {
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if (icon != null) {
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Drawable.ConstantState state = icon.getConstantState();
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icon = DrawableCompat.wrap(state == null ? icon : state.newDrawable()).mutate();
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DrawableCompat.setTintList(icon, iconTint);
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}
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this.icon.setImageDrawable(icon);
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}
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@Override
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public boolean prefersCondensedTitle() {
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return false;
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}
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@Override
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public boolean showsIcon() {
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return true;
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}
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public void setIconTintList(ColorStateList tint) {
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iconTint = tint;
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if (itemData != null) {
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// Update the icon so that the tint takes effect
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setIcon(itemData.getIcon());
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}
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}
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public void setTextAppearance(@StyleRes int textAppearance) {
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TextViewCompat.setTextAppearance(smallLabel, textAppearance);
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TextViewCompat.setTextAppearance(largeLabel, textAppearance);
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}
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public void setTextColor(ColorStateList color) {
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smallLabel.setTextColor(color);
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largeLabel.setTextColor(color);
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}
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public void setActiveLabelSize(float textSize) {
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largeLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
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calculateTextScaleFactors(smallLabel.getTextSize(), largeLabel.getTextSize());
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}
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public void setInactiveLabelSize(float textSize) {
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smallLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
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calculateTextScaleFactors(smallLabel.getTextSize(), largeLabel.getTextSize());
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}
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private void calculateTextScaleFactors(float smallLabelSize, float largeLabelSize) {
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shiftAmount = smallLabelSize - largeLabelSize;
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scaleUpFactor = 1f * largeLabelSize / smallLabelSize;
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scaleDownFactor = 1f * smallLabelSize / largeLabelSize;
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}
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public void setItemBackground(int background) {
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Drawable backgroundDrawable =
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background == 0 ? null : ContextCompat.getDrawable(getContext(), background);
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ViewCompat.setBackground(this, backgroundDrawable);
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}
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}
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