Merge "Prototyping : Demo Image on color setting" into sc-qpr1-dev

res/drawable/ic_color_arrow_left_lt.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    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.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M0,0h24v24h-24z"/>
+  <path
+      android:pathData="M16.41,18.59L15,20L7,12L15,4L16.41,5.41L9.83,12"
+      android:fillColor="?android:attr/colorAccent"
+      android:fillType="evenOdd"/>
+</vector>

res/drawable/ic_color_arrow_right_lt.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    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.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M0,0h24v24h-24z"/>
+  <path
+      android:pathData="M7.59,5.41L9,4L17,12L9,20L7.59,18.59L14.17,12"
+      android:fillColor="?android:attr/colorAccent"
+      android:fillType="evenOdd"/>
+</vector>

res/drawable/ic_color_page_indicator_focused.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    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.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="6dp"
+    android:height="6dp"
+    android:viewportWidth="6"
+    android:viewportHeight="6">
+  <path
+      android:pathData="M3,0C4.65686,0 6,1.34315 6,3C6,4.65686 4.65685,6 3,6C1.34315,6 0,4.65685 0,3C0,1.34315 1.34315,0 3,0Z"
+      android:fillColor="?android:attr/colorAccent"
+      android:fillType="evenOdd"/>
+</vector>

res/drawable/ic_color_page_indicator_unfocused.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    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.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="6dp"
+    android:height="6dp"
+    android:viewportWidth="6"
+    android:viewportHeight="6">
+  <path
+      android:pathData="M3,0C4.65686,0 6,1.34315 6,3C6,4.65686 4.65685,6 3,6C1.34315,6 0,4.65685 0,3C0,1.34315 1.34315,0 3,0Z"
+      android:fillColor="?android:attr/colorAccent"
+      android:fillAlpha="0.24"
+      android:fillType="evenOdd"/>
+</vector>

res/layout/color_mode_preview.xml

@@ -14,16 +14,55 @@
      limitations under the License.
 -->
 
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
+        android:orientation="vertical"
-    android:layout_height="wrap_content">
-
-    <ImageView
         android:layout_width="match_parent"
-        android:layout_height="@dimen/color_mode_preview_height"
+        android:layout_height="wrap_content">
-        android:scaleType="centerCrop"
-        android:cropToPadding="true"
-        android:src="@drawable/color_mode_preview"
-        android:contentDescription="@null" />
 
-</FrameLayout>
+    <androidx.viewpager.widget.ViewPager
+        android:id="@+id/viewpager"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/color_mode_preview_height"/>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="48dp">
+
+        <FrameLayout
+            android:id="@+id/arrow_previous"
+            android:layout_width="wrap_content"
+            android:layout_height="48dp"
+            android:paddingLeft="24dp"
+            android:layout_gravity="center_vertical|left"
+            android:contentDescription="@string/previous_page_content_description">
+
+            <ImageView
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:layout_gravity="center"
+                android:src="@drawable/ic_color_arrow_left_lt"/>
+        </FrameLayout>
+
+        <LinearLayout
+            android:id="@+id/viewGroup"
+            android:layout_width="fill_parent"
+            android:layout_height="48dp"
+            android:gravity="center"/>
+
+        <FrameLayout
+            android:id="@+id/arrow_next"
+            android:layout_width="wrap_content"
+            android:layout_height="48dp"
+            android:paddingRight="24dp"
+            android:layout_gravity="center_vertical|right"
+            android:contentDescription="@string/next_page_content_description">
+
+            <ImageView
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:layout_gravity="center"
+                android:src="@drawable/ic_color_arrow_right_lt"/>
+        </FrameLayout>
+    </FrameLayout>
+
+</LinearLayout>

res/layout/color_mode_view1.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 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.
+-->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:foregroundGravity="center_horizontal">
+
+        <ImageView
+            android:id="@+id/image1"
+            android:layout_width="match_parent"
+            android:layout_height="@dimen/color_mode_preview_height"
+            android:scaleType="centerCrop"
+            android:cropToPadding="true"
+            android:src="@drawable/color_mode_preview1"
+            android:contentDescription="@null" />
+
+    </FrameLayout>
+</LinearLayout>

res/layout/color_mode_view2.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 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.
+-->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:foregroundGravity="center_horizontal">
+
+        <ImageView
+            android:id="@+id/image2"
+            android:layout_width="match_parent"
+            android:layout_height="@dimen/color_mode_preview_height"
+            android:scaleType="centerCrop"
+            android:cropToPadding="true"
+            android:src="@drawable/color_mode_preview2"
+            android:contentDescription="@null" />
+
+    </FrameLayout>
+</LinearLayout>

res/layout/color_mode_view3.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 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.
+-->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:foregroundGravity="center_horizontal">
+
+        <ImageView
+            android:id="@+id/image3"
+            android:layout_width="match_parent"
+            android:layout_height="@dimen/color_mode_preview_height"
+            android:scaleType="centerCrop"
+            android:cropToPadding="true"
+            android:src="@drawable/color_mode_preview3"
+            android:contentDescription="@null" />
+
+    </FrameLayout>
+</LinearLayout>

res/values/strings.xml

@@ -13542,6 +13542,15 @@
     <!-- Summary for Game settings entry. [CHAR_LIMIT=NONE] -->
     <string name="game_settings_summary">Turn on Game Dashboard shortcut, etc</string>
 
+    <!-- Content description of the previous button to bring user to the previous preview page. -->
+    <string name="previous_page_content_description">Previous</string>
+
+    <!-- Content description of the next button to bring user to the next preview page. -->
+    <string name="next_page_content_description">Next</string>
+
+    <!-- Content description of preview pager in colors preview -->
+    <string name="colors_viewpager_content_description">Color preview</string>
+
     <!-- Bluetooth sim card permission alert for notification title [CHAR LIMIT=none] -->
     <string name="bluetooth_sim_card_access_notification_title">SIM card access request</string>
     <!-- Bluetooth sim card permission alert for notification content [CHAR LIMIT=none] -->

src/com/android/settings/display/ColorModePreferenceFragment.java

@@ -28,12 +28,18 @@ import android.database.ContentObserver;
 import android.graphics.drawable.Drawable;
 import android.hardware.display.ColorDisplayManager;
 import android.net.Uri;
+import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
 import android.provider.Settings.Secure;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.PreferenceScreen;
+import androidx.viewpager.widget.PagerAdapter;
+import androidx.viewpager.widget.ViewPager;
 
 import com.android.settings.R;
 import com.android.settings.search.BaseSearchIndexProvider;
@@ -43,6 +49,7 @@ import com.android.settingslib.widget.CandidateInfo;
 import com.android.settingslib.widget.LayoutPreference;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 
@@ -54,10 +61,25 @@ public class ColorModePreferenceFragment extends RadioButtonPickerFragment {
 
     private static final int COLOR_MODE_FALLBACK = COLOR_MODE_NATURAL;
 
+    static final String PAGE_VIEWER_SELECTION_INDEX = "page_viewer_selection_index";
+
+    private static final int DOT_INDICATOR_SIZE = 12;
+    private static final int DOT_INDICATOR_LEFT_PADDING = 6;
+    private static final int DOT_INDICATOR_RIGHT_PADDING = 6;
+
     private ContentObserver mContentObserver;
     private ColorDisplayManager mColorDisplayManager;
     private Resources mResources;
 
+    private View mViewArrowPrevious;
+    private View mViewArrowNext;
+    private ViewPager mViewPager;
+
+    private ArrayList<View> mPageList;
+
+    private ImageView[] mDotIndicators;
+    private View[] mViewPagerImages;
+
     @Override
     public void onAttach(Context context) {
         super.onAttach(context);
@@ -85,6 +107,16 @@ public class ColorModePreferenceFragment extends RadioButtonPickerFragment {
                 false /* notifyForDescendants */, mContentObserver, mUserId);
     }
 
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (savedInstanceState != null) {
+            final int selectedPosition = savedInstanceState.getInt(PAGE_VIEWER_SELECTION_INDEX);
+            mViewPager.setCurrentItem(selectedPosition);
+            updateIndicator(selectedPosition);
+        }
+    }
+
     @Override
     public void onDetach() {
         if (mContentObserver != null) {
@@ -94,6 +126,12 @@ public class ColorModePreferenceFragment extends RadioButtonPickerFragment {
         super.onDetach();
     }
 
+    @Override
+    public void onSaveInstanceState(Bundle outState){
+        super.onSaveInstanceState(outState);
+        outState.putInt(PAGE_VIEWER_SELECTION_INDEX, mViewPager.getCurrentItem());
+    }
+
     @Override
     protected int getPreferenceScreenResId() {
         return R.xml.color_mode_settings;
@@ -105,11 +143,69 @@ public class ColorModePreferenceFragment extends RadioButtonPickerFragment {
         screen.addPreference(preview);
     }
 
+    @VisibleForTesting
+    public ArrayList<Integer> getViewPagerResource() {
+        return new ArrayList<Integer>(
+                Arrays.asList(
+                        R.layout.color_mode_view1,
+                        R.layout.color_mode_view2,
+                        R.layout.color_mode_view3));
+    }
+
+    void addViewPager(LayoutPreference preview) {
+        final ArrayList<Integer> tmpviewPagerList = getViewPagerResource();
+        mViewPager = preview.findViewById(R.id.viewpager);
+
+        mViewPagerImages = new View[3];
+        for (int idx = 0; idx < tmpviewPagerList.size(); idx++) {
+            mViewPagerImages[idx] =
+                    getLayoutInflater().inflate(tmpviewPagerList.get(idx), null /* root */);
+        }
+
+        mPageList = new ArrayList<View>();
+        mPageList.add(mViewPagerImages[0]);
+        mPageList.add(mViewPagerImages[1]);
+        mPageList.add(mViewPagerImages[2]);
+
+        mViewPager.setAdapter(new ColorPagerAdapter(mPageList));
+
+        mViewArrowPrevious = preview.findViewById(R.id.arrow_previous);
+        mViewArrowPrevious.setOnClickListener(v -> {
+            final int previousPos = mViewPager.getCurrentItem() - 1;
+            mViewPager.setCurrentItem(previousPos, true);
+        });
+
+        mViewArrowNext = preview.findViewById(R.id.arrow_next);
+        mViewArrowNext.setOnClickListener(v -> {
+            final int nextPos = mViewPager.getCurrentItem() + 1;
+            mViewPager.setCurrentItem(nextPos, true);
+        });
+
+        mViewPager.addOnPageChangeListener(createPageListener());
+
+        final ViewGroup viewGroup = (ViewGroup) preview.findViewById(R.id.viewGroup);
+        mDotIndicators = new ImageView[mPageList.size()];
+        for (int i = 0; i < mPageList.size(); i++) {
+            final ImageView imageView = new ImageView(getContext());
+            final ViewGroup.MarginLayoutParams lp =
+                    new ViewGroup.MarginLayoutParams(DOT_INDICATOR_SIZE, DOT_INDICATOR_SIZE);
+            lp.setMargins(DOT_INDICATOR_LEFT_PADDING, 0, DOT_INDICATOR_RIGHT_PADDING, 0);
+            imageView.setLayoutParams(lp);
+            mDotIndicators[i] = imageView;
+
+            viewGroup.addView(mDotIndicators[i]);
+        }
+
+        updateIndicator(mViewPager.getCurrentItem());
+    }
+
     @Override
     protected void addStaticPreferences(PreferenceScreen screen) {
         final LayoutPreference preview = new LayoutPreference(screen.getContext(),
                 R.layout.color_mode_preview);
         configureAndInstallPreview(preview, screen);
+
+        addViewPager(preview);
     }
 
     @Override
@@ -207,6 +303,88 @@ public class ColorModePreferenceFragment extends RadioButtonPickerFragment {
         }
     }
 
+    private ViewPager.OnPageChangeListener createPageListener() {
+        return new ViewPager.OnPageChangeListener() {
+            @Override
+            public void onPageScrolled(
+                    int position, float positionOffset, int positionOffsetPixels) {
+                if (positionOffset != 0) {
+                    for (int idx = 0; idx < mPageList.size(); idx++) {
+                        mViewPagerImages[idx].setVisibility(View.VISIBLE);
+                    }
+                } else {
+                    mViewPagerImages[position].setContentDescription(
+                            getContext().getString(R.string.colors_viewpager_content_description));
+                    updateIndicator(position);
+                }
+            }
+
+            @Override
+            public void onPageSelected(int position) {}
+
+            @Override
+            public void onPageScrollStateChanged(int state) {}
+        };
+    }
+
+    private void updateIndicator(int position) {
+        for (int i = 0; i < mPageList.size(); i++) {
+            if (position == i) {
+                mDotIndicators[i].setBackgroundResource(
+                        R.drawable.ic_color_page_indicator_focused);
+
+                mViewPagerImages[i].setVisibility(View.VISIBLE);
+            } else {
+                mDotIndicators[i].setBackgroundResource(
+                        R.drawable.ic_color_page_indicator_unfocused);
+
+                mViewPagerImages[i].setVisibility(View.INVISIBLE);
+            }
+        }
+
+        if (position == 0) {
+            mViewArrowPrevious.setVisibility(View.INVISIBLE);
+            mViewArrowNext.setVisibility(View.VISIBLE);
+        } else if (position == (mPageList.size() - 1)) {
+            mViewArrowPrevious.setVisibility(View.VISIBLE);
+            mViewArrowNext.setVisibility(View.INVISIBLE);
+        } else {
+            mViewArrowPrevious.setVisibility(View.VISIBLE);
+            mViewArrowNext.setVisibility(View.VISIBLE);
+        }
+    }
+
+    static class ColorPagerAdapter extends PagerAdapter {
+        private final ArrayList<View> mPageViewList;
+
+        ColorPagerAdapter(ArrayList<View> pageViewList) {
+            mPageViewList = pageViewList;
+        }
+
+        @Override
+        public void destroyItem(ViewGroup container, int position, Object object) {
+            if (mPageViewList.get(position) != null) {
+                container.removeView(mPageViewList.get(position));
+            }
+        }
+
+        @Override
+        public Object instantiateItem(ViewGroup container, int position) {
+            container.addView(mPageViewList.get(position));
+            return mPageViewList.get(position);
+        }
+
+        @Override
+        public int getCount() {
+            return mPageViewList.size();
+        }
+
+        @Override
+        public boolean isViewFromObject(View view, Object object) {
+            return object == view;
+        }
+    }
+
     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
             new BaseSearchIndexProvider(R.xml.color_mode_settings) {
 

tests/unit/src/com/android/settings/display/ColorModePreferenceFragmentTest.java

@@ -39,6 +39,7 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import java.util.ArrayList;
 import java.util.List;
 
 @RunWith(AndroidJUnit4.class)
@@ -232,4 +233,15 @@ public class ColorModePreferenceFragmentTest {
 
         verify(mFragment).setColorMode(ColorDisplayManager.COLOR_MODE_AUTOMATIC);
     }
+
+    @Test
+    @UiThreadTest
+    public void checkViewPagerTotalCount() throws Throwable {
+        final ArrayList<Integer> viewPagerResList = mFragment.getViewPagerResource();
+
+        assertThat(viewPagerResList.size()).isEqualTo(3);
+        for (int idx = 0; idx < viewPagerResList.size(); idx++) {
+            assertThat(viewPagerResList.get(idx) > 0).isTrue();
+        }
+    }
 }