Adding a sliding tab strip to the custom tab layout. (510a64d0) · Commits · e / os / android_packages_apps_Trebuchet

res/color/all_apps_tab_text.xml

0 → 100644

+19 −0

Original line number	Diff line number	Diff line
		<?xml version="1.0" encoding="utf-8"?>
		<!-- Copyright (C) 2017 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.
		-->
		<selector xmlns:android="http://schemas.android.com/apk/res/android">
		<item android:color="?android:attr/colorAccent" android:state_selected="true"/>
		<item android:color="?android:attr/textColorTertiary"/>
		</selector>
		No newline at end of file

res/layout/all_apps.xml

+5 −3

Original line number	Diff line number	Diff line
		@@ -44,8 +44,8 @@
		android:layout_width="match_parent"
		android:layout_height="wrap_content"/>

		<LinearLayout
		android:id="@+id/tab_layout"
		<com.android.launcher3.views.SlidingTabStrip
		android:id="@+id/tabs"
		android:layout_width="match_parent"
		android:layout_height="@dimen/all_apps_header_tab_height"
		android:layout_below="@id/header_content"
		@@ -56,6 +56,7 @@
		android:layout_height="match_parent"
		android:layout_weight="1"
		android:text="@string/all_apps_personal_tab"
		android:textColor="@color/all_apps_tab_text"
		android:background="?android:attr/selectableItemBackground"/>
		<Button
		android:id="@+id/tab_work"
		@@ -63,8 +64,9 @@
		android:layout_height="match_parent"
		android:layout_weight="1"
		android:text="@string/all_apps_work_tab"
		android:textColor="@color/all_apps_tab_text"
		android:background="?android:attr/selectableItemBackground"/>
		</LinearLayout>
		</com.android.launcher3.views.SlidingTabStrip>

		</RelativeLayout>

res/values/dimens.xml

+1 −0

Original line number	Diff line number	Diff line
		@@ -91,6 +91,7 @@
		<dimen name="all_apps_background_canvas_height">475dp</dimen>
		<dimen name="all_apps_caret_workspace_offset">18dp</dimen>
		<dimen name="all_apps_header_tab_height">50dp</dimen>
		<dimen name="all_apps_tabs_indicator_height">2dp</dimen>

		<!-- Search bar in All Apps -->
		<dimen name="all_apps_header_max_elevation">3dp</dimen>

src/com/android/launcher3/allapps/AllAppsContainerView.java

+4 −1

Original line number	Diff line number	Diff line
		@@ -58,8 +58,8 @@ import com.android.launcher3.util.ComponentKey;
		import com.android.launcher3.util.ComponentKeyMapper;
		import com.android.launcher3.util.ItemInfoMatcher;
		import com.android.launcher3.util.PackageUserKey;
		import com.android.launcher3.util.Themes;
		import com.android.launcher3.util.TransformingTouchDelegate;
		import com.android.launcher3.views.SlidingTabStrip;

		import java.util.HashMap;
		import java.util.List;
		@@ -471,6 +471,7 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,
		}

		private void setupWorkProfileTabs() {
		final SlidingTabStrip tabs = findViewById(R.id.tabs);
		mViewPager.setAdapter(new TabsPagerAdapter());
		mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {

		@@ -478,6 +479,7 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,

		@Override
		public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
		tabs.updateIndicatorPosition(position, positionOffset);
		if (positionOffset == 0 && !mVisible \|\| positionOffset > 0 && mVisible) {
		mVisible = positionOffset == 0;
		for (int i = 0; i < mAH.length; i++) {
		@@ -490,6 +492,7 @@ public class AllAppsContainerView extends RelativeLayout implements DragSource,

		@Override
		public void onPageSelected(int pos) {
		tabs.updateTabTextColor(pos);
		mFloatingHeaderHandler.setMainActive(pos == 0);
		applyTouchDelegate();
		if (mAH[pos].recyclerView != null) {

src/com/android/launcher3/views/SlidingTabStrip.java

0 → 100644

+107 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2017 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 com.android.launcher3.views;

		import android.content.Context;
		import android.graphics.Canvas;
		import android.graphics.Paint;
		import android.support.annotation.NonNull;
		import android.support.annotation.Nullable;
		import android.util.AttributeSet;
		import android.view.View;
		import android.widget.Button;
		import android.widget.LinearLayout;

		import com.android.launcher3.R;
		import com.android.launcher3.util.Themes;

		public class SlidingTabStrip extends LinearLayout {

		private final Paint mSelectedIndicatorPaint;
		private int mSelectedIndicatorHeight;
		private int mIndicatorLeft = -1;
		private int mIndicatorRight = -1;
		private int mSelectedPosition = -1;
		private float mSelectionOffset;

		public SlidingTabStrip(@NonNull Context context, @Nullable AttributeSet attrs) {
		super(context, attrs);
		setOrientation(HORIZONTAL);
		setWillNotDraw(false);
		mSelectedIndicatorPaint = new Paint();
		mSelectedIndicatorPaint.setColor(Themes.getAttrColor(context, android.R.attr.colorAccent));
		mSelectedIndicatorHeight = getResources()
		.getDimensionPixelSize(R.dimen.all_apps_tabs_indicator_height);
		}

		public void updateIndicatorPosition(int position, float positionOffset) {
		mSelectedPosition = position;
		mSelectionOffset = positionOffset;
		updateIndicatorPosition();
		}

		public void updateTabTextColor(int pos) {
		for (int i=0; i < getChildCount(); i++) {
		Button tab = (Button) getChildAt(i);
		tab.setSelected(i == pos);
		}
		}

		@Override
		protected void onLayout(boolean changed, int l, int t, int r, int b) {
		super.onLayout(changed, l, t, r, b);
		updateTabTextColor(0);
		updateIndicatorPosition(0, 0);
		}

		private void updateIndicatorPosition() {
		final View tab = getChildAt(mSelectedPosition);
		int left, right;

		if (tab != null && tab.getWidth() > 0) {
		left = tab.getLeft();
		right = tab.getRight();

		if (mSelectionOffset > 0f && mSelectedPosition < getChildCount() - 1) {
		// Draw the selection partway between the tabs
		View nextTitle = getChildAt(mSelectedPosition + 1);
		left = (int) (mSelectionOffset * nextTitle.getLeft() +
		(1.0f - mSelectionOffset) * left);
		right = (int) (mSelectionOffset * nextTitle.getRight() +
		(1.0f - mSelectionOffset) * right);
		}
		} else {
		left = right = -1;
		}

		setIndicatorPosition(left, right);
		}

		private void setIndicatorPosition(int left, int right) {
		if (left != mIndicatorLeft \|\| right != mIndicatorRight) {
		mIndicatorLeft = left;
		mIndicatorRight = right;
		invalidate();
		}
		}

		@Override
		protected void onDraw(Canvas canvas) {
		super.onDraw(canvas);
		canvas.drawRect(mIndicatorLeft, getHeight() - mSelectedIndicatorHeight,
		mIndicatorRight, getHeight(), mSelectedIndicatorPaint);
		}
		}
		No newline at end of file