| /* |
| * Copyright (C) 2015 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 android.view; |
| |
| import android.annotation.Nullable; |
| import android.app.Notification; |
| import android.content.Context; |
| import android.graphics.Rect; |
| import android.util.AttributeSet; |
| import android.widget.LinearLayout; |
| import android.widget.RemoteViews; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * A header of a notification view |
| * |
| * @hide |
| */ |
| @RemoteViews.RemoteView |
| public class NotificationHeaderView extends LinearLayout { |
| private final int mHeaderMinWidth; |
| private View mAppName; |
| private View mSubTextView; |
| private OnClickListener mExpandClickListener; |
| private HeaderTouchListener mTouchListener = new HeaderTouchListener(); |
| private View mExpandButton; |
| private View mIcon; |
| |
| public NotificationHeaderView(Context context) { |
| this(context, null); |
| } |
| |
| public NotificationHeaderView(Context context, @Nullable AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public NotificationHeaderView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public NotificationHeaderView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| mHeaderMinWidth = getResources().getDimensionPixelSize( |
| com.android.internal.R.dimen.notification_header_shrink_min_width); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| mAppName = findViewById(com.android.internal.R.id.app_name_text); |
| mSubTextView = findViewById(com.android.internal.R.id.header_sub_text); |
| mExpandButton = findViewById(com.android.internal.R.id.expand_button); |
| mIcon = findViewById(com.android.internal.R.id.icon); |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| final int givenWidth = MeasureSpec.getSize(widthMeasureSpec); |
| final int givenHeight = MeasureSpec.getSize(heightMeasureSpec); |
| int wrapContentWidthSpec = MeasureSpec.makeMeasureSpec(givenWidth, |
| MeasureSpec.AT_MOST); |
| int wrapContentHeightSpec = MeasureSpec.makeMeasureSpec(givenHeight, |
| MeasureSpec.AT_MOST); |
| int totalWidth = getPaddingStart() + getPaddingEnd(); |
| for (int i = 0; i < getChildCount(); i++) { |
| final View child = getChildAt(i); |
| if (child.getVisibility() == GONE) { |
| // We'll give it the rest of the space in the end |
| continue; |
| } |
| final MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams(); |
| int childWidthSpec = getChildMeasureSpec(wrapContentWidthSpec, |
| lp.leftMargin + lp.rightMargin, lp.width); |
| int childHeightSpec = getChildMeasureSpec(wrapContentHeightSpec, |
| lp.topMargin + lp.bottomMargin, lp.height); |
| child.measure(childWidthSpec, childHeightSpec); |
| totalWidth += lp.leftMargin + lp.rightMargin + child.getMeasuredWidth(); |
| } |
| if (totalWidth > givenWidth) { |
| int overFlow = totalWidth - givenWidth; |
| // We are overflowing, lets shrink |
| final int appWidth = mAppName.getMeasuredWidth(); |
| if (appWidth > mHeaderMinWidth) { |
| int newSize = appWidth - Math.min(appWidth - mHeaderMinWidth, overFlow); |
| int childWidthSpec = MeasureSpec.makeMeasureSpec(newSize, MeasureSpec.AT_MOST); |
| mAppName.measure(childWidthSpec, wrapContentHeightSpec); |
| overFlow -= appWidth - newSize; |
| } |
| if (overFlow > 0 && mSubTextView.getVisibility() != GONE) { |
| // we're still too big |
| final int subTextWidth = mSubTextView.getMeasuredWidth(); |
| int newSize = Math.max(0, subTextWidth - overFlow); |
| int childWidthSpec = MeasureSpec.makeMeasureSpec(newSize, MeasureSpec.AT_MOST); |
| mSubTextView.measure(childWidthSpec, wrapContentHeightSpec); |
| } |
| totalWidth = givenWidth; |
| } |
| setMeasuredDimension(totalWidth, givenHeight); |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int l, int t, int r, int b) { |
| super.onLayout(changed, l, t, r, b); |
| updateTouchListener(); |
| } |
| |
| private void updateTouchListener() { |
| if (mExpandClickListener != null) { |
| mTouchListener.bindTouchRects(); |
| } |
| } |
| |
| @Override |
| public void setOnClickListener(@Nullable OnClickListener l) { |
| mExpandClickListener = l; |
| setOnTouchListener(mExpandClickListener != null ? mTouchListener : null); |
| updateTouchListener(); |
| } |
| |
| public class HeaderTouchListener implements View.OnTouchListener { |
| |
| private final ArrayList<Rect> mTouchRects = new ArrayList<>(); |
| private int mTouchSlop; |
| private boolean mTrackGesture; |
| private float mDownX; |
| private float mDownY; |
| |
| public HeaderTouchListener() { |
| } |
| |
| public void bindTouchRects() { |
| mTouchRects.clear(); |
| addRectAroundViewView(mIcon); |
| addRectAroundViewView(mExpandButton); |
| addInBetweenRect(); |
| mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); |
| } |
| |
| private void addInBetweenRect() { |
| final Rect r = new Rect(); |
| r.top = 0; |
| r.bottom = (int) (32 * getResources().getDisplayMetrics().density); |
| Rect leftRect = mTouchRects.get(0); |
| r.left = leftRect.right; |
| Rect rightRect = mTouchRects.get(1); |
| r.right = rightRect.left; |
| mTouchRects.add(r); |
| } |
| |
| private void addRectAroundViewView(View view) { |
| final Rect r = getRectAroundView(view); |
| mTouchRects.add(r); |
| } |
| |
| private Rect getRectAroundView(View view) { |
| float size = 48 * getResources().getDisplayMetrics().density; |
| final Rect r = new Rect(); |
| if (view.getVisibility() == GONE) { |
| view = getFirstChildNotGone(); |
| r.left = (int) (view.getLeft() - size / 2.0f); |
| } else { |
| r.left = (int) ((view.getLeft() + view.getRight()) / 2.0f - size / 2.0f); |
| } |
| r.top = (int) ((view.getTop() + view.getBottom()) / 2.0f - size / 2.0f); |
| r.bottom = (int) (r.top + size); |
| r.right = (int) (r.left + size); |
| return r; |
| } |
| |
| @Override |
| public boolean onTouch(View v, MotionEvent event) { |
| float x = event.getX(); |
| float y = event.getY(); |
| switch (event.getActionMasked() & MotionEvent.ACTION_MASK) { |
| case MotionEvent.ACTION_DOWN: |
| mTrackGesture = false; |
| if (isInside(x, y)) { |
| mTrackGesture = true; |
| return true; |
| } |
| break; |
| case MotionEvent.ACTION_MOVE: |
| if (mTrackGesture) { |
| if (Math.abs(mDownX - x) > mTouchSlop |
| || Math.abs(mDownY - y) > mTouchSlop) { |
| mTrackGesture = false; |
| } |
| } |
| break; |
| case MotionEvent.ACTION_UP: |
| if (mTrackGesture) { |
| mExpandClickListener.onClick(NotificationHeaderView.this); |
| } |
| break; |
| } |
| return mTrackGesture; |
| } |
| |
| private boolean isInside(float x, float y) { |
| for (int i = 0; i < mTouchRects.size(); i++) { |
| Rect r = mTouchRects.get(i); |
| if (r.contains((int) x, (int) y)) { |
| mDownX = x; |
| mDownY = y; |
| return true; |
| } |
| } |
| return false; |
| } |
| } |
| |
| private View getFirstChildNotGone() { |
| for (int i = 0; i < getChildCount(); i++) { |
| final View child = getChildAt(i); |
| if (child.getVisibility() != GONE) { |
| return child; |
| } |
| } |
| return this; |
| } |
| } |