| /* |
| * 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.keyguard; |
| |
| import android.annotation.ColorInt; |
| import android.app.PendingIntent; |
| import android.arch.lifecycle.LiveData; |
| import android.arch.lifecycle.Observer; |
| import android.content.Context; |
| import android.graphics.Color; |
| import android.graphics.drawable.Drawable; |
| import android.net.Uri; |
| import android.provider.Settings; |
| import android.text.Layout; |
| import android.text.TextUtils; |
| import android.text.TextUtils.TruncateAt; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.view.View; |
| import android.widget.Button; |
| import android.widget.LinearLayout; |
| import android.widget.TextView; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.graphics.ColorUtils; |
| import com.android.settingslib.Utils; |
| import com.android.systemui.Dependency; |
| import com.android.systemui.R; |
| import com.android.systemui.keyguard.KeyguardSliceProvider; |
| import com.android.systemui.tuner.TunerService; |
| |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.function.Consumer; |
| |
| import androidx.app.slice.Slice; |
| import androidx.app.slice.SliceItem; |
| import androidx.app.slice.core.SliceQuery; |
| import androidx.app.slice.widget.ListContent; |
| import androidx.app.slice.widget.RowContent; |
| import androidx.app.slice.widget.SliceLiveData; |
| |
| /** |
| * View visible under the clock on the lock screen and AoD. |
| */ |
| public class KeyguardSliceView extends LinearLayout implements View.OnClickListener, |
| Observer<Slice>, TunerService.Tunable { |
| |
| private static final String TAG = "KeyguardSliceView"; |
| private final HashMap<View, PendingIntent> mClickActions; |
| private Uri mKeyguardSliceUri; |
| private TextView mTitle; |
| private LinearLayout mRow; |
| private int mTextColor; |
| private float mDarkAmount = 0; |
| |
| private LiveData<Slice> mLiveData; |
| private int mIconSize; |
| private Consumer<Boolean> mListener; |
| private boolean mHasHeader; |
| |
| public KeyguardSliceView(Context context) { |
| this(context, null, 0); |
| } |
| |
| public KeyguardSliceView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public KeyguardSliceView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| |
| TunerService tunerService = Dependency.get(TunerService.class); |
| tunerService.addTunable(this, Settings.Secure.KEYGUARD_SLICE_URI); |
| |
| mClickActions = new HashMap<>(); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| mTitle = findViewById(R.id.title); |
| mRow = findViewById(R.id.row); |
| mTextColor = Utils.getColorAttr(mContext, R.attr.wallpaperTextColor); |
| mIconSize = (int) mContext.getResources().getDimension(R.dimen.widget_icon_size); |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| |
| // Make sure we always have the most current slice |
| mLiveData.observeForever(this); |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| |
| mLiveData.removeObserver(this); |
| } |
| |
| private void showSlice(Slice slice) { |
| |
| ListContent lc = new ListContent(slice); |
| mHasHeader = lc.hasHeader(); |
| List<SliceItem> subItems = lc.getRowItems(); |
| if (!mHasHeader) { |
| mTitle.setVisibility(GONE); |
| } else { |
| mTitle.setVisibility(VISIBLE); |
| // If there's a header it'll be the first subitem |
| RowContent header = new RowContent(subItems.get(0), true /* showStartItem */); |
| SliceItem mainTitle = header.getTitleItem(); |
| CharSequence title = mainTitle != null ? mainTitle.getText() : null; |
| mTitle.setText(title); |
| |
| // Check if we're already ellipsizing the text. |
| // We're going to figure out the best possible line break if not. |
| Layout layout = mTitle.getLayout(); |
| if (layout != null){ |
| final int lineCount = layout.getLineCount(); |
| if (lineCount > 0) { |
| if (layout.getEllipsisCount(lineCount - 1) == 0) { |
| mTitle.setText(findBestLineBreak(title)); |
| } |
| } |
| } |
| } |
| |
| mClickActions.clear(); |
| final int subItemsCount = subItems.size(); |
| final int blendedColor = getTextColor(); |
| final int startIndex = mHasHeader ? 1 : 0; // First item is header; skip it |
| for (int i = startIndex; i < subItemsCount; i++) { |
| SliceItem item = subItems.get(i); |
| RowContent rc = new RowContent(item, true /* showStartItem */); |
| final Uri itemTag = item.getSlice().getUri(); |
| // Try to reuse the view if already exists in the layout |
| KeyguardSliceButton button = mRow.findViewWithTag(itemTag); |
| if (button == null) { |
| button = new KeyguardSliceButton(mContext); |
| button.setTextColor(blendedColor); |
| button.setTag(itemTag); |
| } else { |
| mRow.removeView(button); |
| } |
| mRow.addView(button); |
| |
| PendingIntent pendingIntent = null; |
| if (rc.getPrimaryAction() != null) { |
| pendingIntent = rc.getPrimaryAction().getAction(); |
| } |
| mClickActions.put(button, pendingIntent); |
| |
| final SliceItem titleItem = rc.getTitleItem(); |
| button.setText(titleItem == null ? null : titleItem.getText()); |
| |
| Drawable iconDrawable = null; |
| SliceItem icon = SliceQuery.find(item.getSlice(), |
| android.app.slice.SliceItem.FORMAT_IMAGE); |
| if (icon != null) { |
| iconDrawable = icon.getIcon().loadDrawable(mContext); |
| final int width = (int) (iconDrawable.getIntrinsicWidth() |
| / (float) iconDrawable.getIntrinsicHeight() * mIconSize); |
| iconDrawable.setBounds(0, 0, Math.max(width, 1), mIconSize); |
| } |
| button.setCompoundDrawables(iconDrawable, null, null, null); |
| button.setOnClickListener(this); |
| } |
| |
| // Removing old views |
| for (int i = 0; i < mRow.getChildCount(); i++) { |
| View child = mRow.getChildAt(i); |
| if (!mClickActions.containsKey(child)) { |
| mRow.removeView(child); |
| i--; |
| } |
| } |
| |
| final int visibility = mHasHeader || subItemsCount > 0 ? VISIBLE : GONE; |
| if (visibility != getVisibility()) { |
| setVisibility(visibility); |
| } |
| |
| mListener.accept(mHasHeader); |
| } |
| |
| /** |
| * Breaks a string in 2 lines where both have similar character count |
| * but first line is always longer. |
| * |
| * @param charSequence Original text. |
| * @return Optimal string. |
| */ |
| private CharSequence findBestLineBreak(CharSequence charSequence) { |
| if (TextUtils.isEmpty(charSequence)) { |
| return charSequence; |
| } |
| |
| String source = charSequence.toString(); |
| // Ignore if there is only 1 word, |
| // or if line breaks were manually set. |
| if (source.contains("\n") || !source.contains(" ")) { |
| return source; |
| } |
| |
| final String[] words = source.split(" "); |
| final StringBuilder optimalString = new StringBuilder(source.length()); |
| int current = 0; |
| while (optimalString.length() < source.length() - optimalString.length()) { |
| optimalString.append(words[current]); |
| if (current < words.length - 1) { |
| optimalString.append(" "); |
| } |
| current++; |
| } |
| optimalString.append("\n"); |
| for (int i = current; i < words.length; i++) { |
| optimalString.append(words[i]); |
| if (current < words.length - 1) { |
| optimalString.append(" "); |
| } |
| } |
| |
| return optimalString.toString(); |
| } |
| |
| public void setDark(float darkAmount) { |
| mDarkAmount = darkAmount; |
| updateTextColors(); |
| } |
| |
| private void updateTextColors() { |
| final int blendedColor = getTextColor(); |
| mTitle.setTextColor(blendedColor); |
| int childCount = mRow.getChildCount(); |
| for (int i = 0; i < childCount; i++) { |
| View v = mRow.getChildAt(i); |
| if (v instanceof Button) { |
| ((Button) v).setTextColor(blendedColor); |
| } |
| } |
| } |
| |
| @Override |
| public void onClick(View v) { |
| final PendingIntent action = mClickActions.get(v); |
| if (action != null) { |
| try { |
| action.send(); |
| } catch (PendingIntent.CanceledException e) { |
| Log.i(TAG, "Pending intent cancelled, nothing to launch", e); |
| } |
| } |
| } |
| |
| public void setListener(Consumer<Boolean> listener) { |
| mListener = listener; |
| } |
| |
| public boolean hasHeader() { |
| return mHasHeader; |
| } |
| |
| /** |
| * LiveData observer lifecycle. |
| * @param slice the new slice content. |
| */ |
| @Override |
| public void onChanged(Slice slice) { |
| showSlice(slice); |
| } |
| |
| @Override |
| public void onTuningChanged(String key, String newValue) { |
| setupUri(newValue); |
| } |
| |
| public void setupUri(String uriString) { |
| if (uriString == null) { |
| uriString = KeyguardSliceProvider.KEYGUARD_SLICE_URI; |
| } |
| |
| boolean wasObserving = false; |
| if (mLiveData != null && mLiveData.hasActiveObservers()) { |
| wasObserving = true; |
| mLiveData.removeObserver(this); |
| } |
| |
| mKeyguardSliceUri = Uri.parse(uriString); |
| mLiveData = SliceLiveData.fromUri(mContext, mKeyguardSliceUri); |
| |
| if (wasObserving) { |
| mLiveData.observeForever(this); |
| } |
| } |
| |
| @VisibleForTesting |
| int getTextColor() { |
| return ColorUtils.blendARGB(mTextColor, Color.WHITE, mDarkAmount); |
| } |
| |
| @VisibleForTesting |
| void setTextColor(@ColorInt int textColor) { |
| mTextColor = textColor; |
| updateTextColors(); |
| } |
| |
| /** |
| * Representation of an item that appears under the clock on main keyguard message. |
| */ |
| private class KeyguardSliceButton extends Button { |
| |
| public KeyguardSliceButton(Context context) { |
| super(context, null /* attrs */, 0 /* styleAttr */, |
| com.android.keyguard.R.style.TextAppearance_Keyguard_Secondary); |
| int horizontalPadding = (int) context.getResources() |
| .getDimension(R.dimen.widget_horizontal_padding); |
| setPadding(horizontalPadding / 2, 0, horizontalPadding / 2, 0); |
| setCompoundDrawablePadding((int) context.getResources() |
| .getDimension(R.dimen.widget_icon_padding)); |
| setMaxWidth(KeyguardSliceView.this.getWidth() / 2); |
| setMaxLines(1); |
| setEllipsize(TruncateAt.END); |
| } |
| |
| @Override |
| public void setTextColor(int color) { |
| super.setTextColor(color); |
| updateDrawableColors(); |
| } |
| |
| @Override |
| public void setCompoundDrawables(Drawable left, Drawable top, Drawable right, |
| Drawable bottom) { |
| super.setCompoundDrawables(left, top, right, bottom); |
| updateDrawableColors(); |
| } |
| |
| private void updateDrawableColors() { |
| final int color = getCurrentTextColor(); |
| for (Drawable drawable : getCompoundDrawables()) { |
| if (drawable != null) { |
| drawable.setTint(color); |
| } |
| } |
| } |
| } |
| } |