getPaletteData(Context context) {
+ final String[] paletteResources =
+ context.getResources().getStringArray(R.array.setting_palette_data);
+ return Arrays.asList(paletteResources);
+ }
+
+ private int getTextWidth(Context context, String text) {
+ final TextView tempView = new TextView(context);
+ return Math.round(tempView.getPaint().measureText(text));
+ }
+
+ private int getTextLineHeight(Context context) {
+ final TextView tempView = new TextView(context);
+ final FontMetrics fontMetrics = tempView.getPaint().getFontMetrics();
+ return Math.round(fontMetrics.bottom - fontMetrics.top);
}
}
diff --git a/src/com/android/settings/accessibility/PaletteListView.java b/src/com/android/settings/accessibility/PaletteListView.java
deleted file mode 100644
index ef010e2d979..00000000000
--- a/src/com/android/settings/accessibility/PaletteListView.java
+++ /dev/null
@@ -1,301 +0,0 @@
-/*
- * Copyright (C) 2020 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.settings.accessibility;
-
-import android.annotation.NonNull;
-import android.content.Context;
-import android.content.res.TypedArray;
-import android.graphics.Color;
-import android.graphics.drawable.GradientDrawable;
-import android.graphics.drawable.GradientDrawable.Orientation;
-import android.util.AttributeSet;
-import android.util.DisplayMetrics;
-import android.view.Display;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.view.WindowManager;
-import android.widget.BaseAdapter;
-import android.widget.ListView;
-import android.widget.TextView;
-
-import androidx.annotation.VisibleForTesting;
-
-import com.android.settings.R;
-
-import com.google.common.collect.Iterables;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-
-/**
- * Custom ListView {@link ListView} which displays palette to deploy the color code preview.
- *
- * The preview shows gradient from color white to specific color code on each list view item, in
- * addition, text view adjusts the attribute of width for adapting the text length.
- *
- *
The text cannot fills the whole view for ensuring the gradient color preview can purely
- * display also the view background shows the color beside the text variable end point.
- */
-public class PaletteListView extends ListView {
- private final Context mContext;
- private final DisplayAdapter mDisplayAdapter;
- private final LayoutInflater mLayoutInflater;
- private final String mDefaultGradientColorCodeString;
- private final int mDefaultGradientColor;
- private float mTextBound;
- private static final float LANDSCAPE_MAX_WIDTH_PERCENTAGE = 100f;
-
- public PaletteListView(Context context) {
- this(context, null);
- }
-
- public PaletteListView(Context context, AttributeSet attrs) {
- this(context, attrs, 0);
- }
-
- public PaletteListView(Context context, AttributeSet attrs, int defStyleAttr) {
- super(context, attrs, defStyleAttr);
- mContext = context;
- mDisplayAdapter = new DisplayAdapter();
- mLayoutInflater = LayoutInflater.from(context);
- mDefaultGradientColorCodeString =
- getResources().getString(R.color.palette_list_gradient_background);
- mDefaultGradientColor =
- getResources().getColor(R.color.palette_list_gradient_background, null);
- mTextBound = 0.0f;
- init();
- }
-
- private static int getScreenWidth(WindowManager windowManager) {
- final Display display = windowManager.getDefaultDisplay();
- final DisplayMetrics displayMetrics = new DisplayMetrics();
- display.getMetrics(displayMetrics);
- return displayMetrics.widthPixels;
- }
-
- private void init() {
- final TypedArray colorNameArray = getResources().obtainTypedArray(
- R.array.setting_palette_colors);
- final TypedArray colorCodeArray = getResources().obtainTypedArray(
- R.array.setting_palette_data);
- final int colorNameArrayLength = colorNameArray.length();
- final List colorList = new ArrayList<>();
- computeTextWidthBounds(colorNameArray);
-
- for (int index = 0; index < colorNameArrayLength; index++) {
- colorList.add(
- new ColorAttributes(
- /* colorName= */ colorNameArray.getString(index),
- /* colorCode= */ colorCodeArray.getColor(index, mDefaultGradientColor),
- /* textBound= */ mTextBound,
- /* gradientDrawable= */
- new GradientDrawable(Orientation.LEFT_RIGHT, null)));
- }
-
- mDisplayAdapter.setColorList(colorList);
- setAdapter(mDisplayAdapter);
- setDividerHeight(/* height= */ 0);
- }
-
- /**
- * Sets string array that required the color name and color code for deploy the new color
- * preview.
- *
- * The parameters not allow null define but two array length inconsistent are acceptable, in
- * addition, to prevent IndexOutOfBoundsException the algorithm will check array data, and base
- * on the array size to display data, or fills color code array if length less than other.
- *
- * @param colorNames a string array of color name
- * @param colorCodes a string array of color code
- * @return true if new array data apply successful
- */
- @VisibleForTesting
- boolean setPaletteListColors(@NonNull String[] colorNames, @NonNull String[] colorCodes) {
- if (colorNames == null || colorCodes == null) {
- return false;
- }
-
- final int colorNameArrayLength = colorNames.length;
- final int colorCodeArrayLength = colorCodes.length;
- final List colorList = new ArrayList<>();
- final String[] colorCodeArray = fillColorCodeArray(colorCodes, colorNameArrayLength,
- colorCodeArrayLength);
- computeTextWidthBounds(colorNames);
-
- for (int index = 0; index < colorNameArrayLength; index++) {
- colorList.add(
- new ColorAttributes(
- /* colorName= */ colorNames[index],
- /* colorCode= */ Color.parseColor(colorCodeArray[index]),
- /* textBound= */ mTextBound,
- /* gradientDrawable= */
- new GradientDrawable(Orientation.LEFT_RIGHT, null)));
- }
-
- mDisplayAdapter.setColorList(colorList);
- mDisplayAdapter.notifyDataSetChanged();
- return true;
- }
-
- private String[] fillColorCodeArray(String[] colorCodes, int colorNameArrayLength,
- int colorCodeArrayLength) {
- if (colorNameArrayLength == colorCodeArrayLength
- || colorNameArrayLength < colorCodeArrayLength) {
- return colorCodes;
- }
-
- final String[] colorCodeArray = new String[colorNameArrayLength];
- for (int index = 0; index < colorNameArrayLength; index++) {
- if (index < colorCodeArrayLength) {
- colorCodeArray[index] = colorCodes[index];
- } else {
- colorCodeArray[index] = mDefaultGradientColorCodeString;
- }
- }
- return colorCodeArray;
- }
-
- private void computeTextWidthBounds(TypedArray colorNameTypedArray) {
- final int colorNameArrayLength = colorNameTypedArray.length();
- final String[] colorNames = new String[colorNameArrayLength];
- for (int index = 0; index < colorNameArrayLength; index++) {
- colorNames[index] = colorNameTypedArray.getString(index);
- }
-
- measureBound(colorNames);
- }
-
- private void computeTextWidthBounds(String[] colorNameArray) {
- final int colorNameArrayLength = colorNameArray.length;
- final String[] colorNames = new String[colorNameArrayLength];
- for (int index = 0; index < colorNameArrayLength; index++) {
- colorNames[index] = colorNameArray[index];
- }
-
- measureBound(colorNames);
- }
-
- private void measureBound(String[] dataArray) {
- final WindowManager windowManager = (WindowManager) mContext.getSystemService(
- Context.WINDOW_SERVICE);
- final View view = mLayoutInflater.inflate(R.layout.palette_listview_item, null);
- final TextView textView = view.findViewById(R.id.item_textview);
- final List colorNameList = new ArrayList<>(Arrays.asList(dataArray));
- Collections.sort(colorNameList, Comparator.comparing(String::length));
- // Gets the last index of list which sort by text length.
- textView.setText(Iterables.getLast(colorNameList));
-
- final float textWidth = textView.getPaint().measureText(textView.getText().toString());
- // Computes rate of text width compare to screen width, and measures the round the double
- // to two decimal places manually.
- final float textBound = Math.round(
- textWidth / getScreenWidth(windowManager) * LANDSCAPE_MAX_WIDTH_PERCENTAGE)
- / LANDSCAPE_MAX_WIDTH_PERCENTAGE;
-
- // Left padding and right padding with color preview.
- final float paddingPixel = getResources().getDimension(
- R.dimen.accessibility_layout_margin_start_end);
- final float paddingWidth =
- Math.round(paddingPixel / getScreenWidth(windowManager)
- * LANDSCAPE_MAX_WIDTH_PERCENTAGE) / LANDSCAPE_MAX_WIDTH_PERCENTAGE;
- mTextBound = textBound + paddingWidth + paddingWidth;
- }
-
- private static class ViewHolder {
- public TextView textView;
- }
-
- /** An adapter that converts color text title and color code to text views. */
- private final class DisplayAdapter extends BaseAdapter {
-
- private List mColorList;
-
- @Override
- public int getCount() {
- return mColorList.size();
- }
-
- @Override
- public Object getItem(int position) {
- return mColorList.get(position);
- }
-
- @Override
- public long getItemId(int position) {
- return position;
- }
-
- @Override
- public View getView(int position, View convertView, ViewGroup parent) {
- final ViewHolder viewHolder;
- final ColorAttributes paletteAttribute = mColorList.get(position);
- final String colorName = paletteAttribute.getColorName();
- final GradientDrawable gradientDrawable = paletteAttribute.getGradientDrawable();
-
- if (convertView == null) {
- convertView = mLayoutInflater.inflate(R.layout.palette_listview_item, null);
- viewHolder = new ViewHolder();
- viewHolder.textView = convertView.findViewById(R.id.item_textview);
- convertView.setTag(viewHolder);
- } else {
- viewHolder = (ViewHolder) convertView.getTag();
- }
-
- viewHolder.textView.setText(colorName);
- viewHolder.textView.setBackground(gradientDrawable);
- return convertView;
- }
-
- protected void setColorList(List colorList) {
- mColorList = colorList;
- }
- }
-
- private final class ColorAttributes {
- private final int mColorIndex = 2; // index for inject color.
- private final int mColorOffsetIndex = 1; // index for offset effect.
- private final String mColorName;
- private final GradientDrawable mGradientDrawable;
- private final int[] mGradientColors =
- {/* startColor=*/ mDefaultGradientColor, /* centerColor=*/ mDefaultGradientColor,
- /* endCode= */ 0};
- private final float[] mGradientOffsets =
- {/* starOffset= */ 0.0f, /* centerOffset= */ 0.5f, /* endOffset= */ 1.0f};
-
- ColorAttributes(
- String colorName, int colorCode, float textBound,
- GradientDrawable gradientDrawable) {
- mGradientColors[mColorIndex] = colorCode;
- mGradientOffsets[mColorOffsetIndex] = textBound;
- gradientDrawable.setColors(mGradientColors, mGradientOffsets);
- mColorName = colorName;
- mGradientDrawable = gradientDrawable;
- }
-
- public String getColorName() {
- return mColorName;
- }
-
- public GradientDrawable getGradientDrawable() {
- return mGradientDrawable;
- }
- }
-}
diff --git a/tests/robotests/src/com/android/settings/accessibility/PaletteListPreferenceTest.java b/tests/robotests/src/com/android/settings/accessibility/PaletteListPreferenceTest.java
new file mode 100644
index 00000000000..759b180206f
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/accessibility/PaletteListPreferenceTest.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2020 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.settings.accessibility;
+
+import static org.junit.Assert.assertEquals;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.preference.PreferenceViewHolder;
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.R;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+/** Tests for {@link PaletteListPreference}. */
+@RunWith(RobolectricTestRunner.class)
+public final class PaletteListPreferenceTest {
+
+ private PaletteListPreference mPaletteListPreference;
+ private PreferenceViewHolder mPreferenceViewHolder;
+ private final Context mContext = ApplicationProvider.getApplicationContext();
+
+ @Before
+ public void initObjects() {
+ mPaletteListPreference = new PaletteListPreference(mContext, null);
+
+ final LayoutInflater inflater = LayoutInflater.from(mContext);
+ final View view =
+ inflater.inflate(R.layout.daltonizer_preview, null);
+ mPreferenceViewHolder = PreferenceViewHolder.createInstanceForTests(view);
+ }
+
+ @Test
+ public void initPaletteView_success() {
+ mPaletteListPreference.onBindViewHolder(mPreferenceViewHolder);
+
+ final ViewGroup viewGroup =
+ mPreferenceViewHolder.itemView.findViewById(R.id.palette_view);
+ final int expectedCount =
+ mContext.getResources().getStringArray(R.array.setting_palette_data).length;
+ assertEquals(expectedCount, viewGroup.getChildCount());
+ }
+}
diff --git a/tests/robotests/src/com/android/settings/accessibility/PaletteListViewTest.java b/tests/robotests/src/com/android/settings/accessibility/PaletteListViewTest.java
deleted file mode 100644
index 13e76d71392..00000000000
--- a/tests/robotests/src/com/android/settings/accessibility/PaletteListViewTest.java
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (C) 2020 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.settings.accessibility;
-
-import static com.google.common.truth.Truth.assertThat;
-
-import android.content.Context;
-
-import androidx.test.core.app.ApplicationProvider;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.robolectric.RobolectricTestRunner;
-
-/** Tests for {@link PaletteListView} */
-@RunWith(RobolectricTestRunner.class)
-public class PaletteListViewTest {
-
- private final Context mContext = ApplicationProvider.getApplicationContext();
- private PaletteListView mPaletteListView;
-
- @Before
- public void setUp() {
- mPaletteListView = new PaletteListView(mContext);
- }
-
- @Test
- public void setColors_applySameLengthArray_configureSuccessful() {
- final String[] colorName = {"White", "Black", "Yellow"};
- final String[] colorCode = {"#ffffff", "#000000", "#f9ab00"};
-
- assertThat(mPaletteListView.setPaletteListColors(colorName, colorCode)).isTrue();
- }
-
- @Test
- public void setColors_applyDifferentLengthArray_configureSuccessful() {
- final String[] colorName = {"White", "Black", "Yellow", "Orange", "Red"};
- final String[] colorCode = {"#ffffff", "#000000", "#f9ab00"};
-
- assertThat(mPaletteListView.setPaletteListColors(colorName, colorCode)).isTrue();
- }
-
- @Test
- public void setColors_configureFailed() {
- final String[] colorName = null;
- final String[] colorCode = null;
-
- assertThat(mPaletteListView.setPaletteListColors(colorName, colorCode)).isFalse();
- }
-}