/*
* 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.content.Context;
import android.graphics.Canvas;
import android.graphics.Outline;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.AttributeSet;
import android.view.accessibility.AccessibilityNodeInfo;
import android.widget.ImageView;
import android.widget.RemoteViews;
import java.util.ArrayList;
/**
* A header of a notification view
*
* @hide
*/
@RemoteViews.RemoteView
public class NotificationHeaderView extends ViewGroup {
public static final int NO_COLOR = -1;
private final int mChildMinWidth;
private final int mContentEndMargin;
private View mAppName;
private View mHeaderText;
private OnClickListener mExpandClickListener;
private HeaderTouchListener mTouchListener = new HeaderTouchListener();
private ImageView mExpandButton;
private View mIcon;
private View mProfileBadge;
private View mInfo;
private int mIconColor;
private int mOriginalNotificationColor;
private boolean mExpanded;
private boolean mShowWorkBadgeAtEnd;
private Drawable mBackground;
private int mHeaderBackgroundHeight;
ViewOutlineProvider mProvider = new ViewOutlineProvider() {
@Override
public void getOutline(View view, Outline outline) {
if (mBackground != null) {
outline.setRect(0, 0, getWidth(), mHeaderBackgroundHeight);
outline.setAlpha(1f);
}
}
};
final AccessibilityDelegate mExpandDelegate = new AccessibilityDelegate() {
@Override
public boolean performAccessibilityAction(View host, int action, Bundle args) {
if (super.performAccessibilityAction(host, action, args)) {
return true;
}
if (action == AccessibilityNodeInfo.ACTION_COLLAPSE
|| action == AccessibilityNodeInfo.ACTION_EXPAND) {
mExpandClickListener.onClick(mExpandButton);
return true;
}
return false;
}
@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(host, info);
// Avoid that the button description is also spoken
info.setClassName(getClass().getName());
if (mExpanded) {
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_COLLAPSE);
} else {
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_EXPAND);
}
}
};
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);
mChildMinWidth = getResources().getDimensionPixelSize(
com.android.internal.R.dimen.notification_header_shrink_min_width);
mContentEndMargin = getResources().getDimensionPixelSize(
com.android.internal.R.dimen.notification_content_margin_end);
mHeaderBackgroundHeight = getResources().getDimensionPixelSize(
com.android.internal.R.dimen.notification_header_background_height);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
mAppName = findViewById(com.android.internal.R.id.app_name_text);
mHeaderText = findViewById(com.android.internal.R.id.header_text);
mExpandButton = (ImageView) findViewById(com.android.internal.R.id.expand_button);
if (mExpandButton != null) {
mExpandButton.setAccessibilityDelegate(mExpandDelegate);
}
mIcon = findViewById(com.android.internal.R.id.icon);
mProfileBadge = findViewById(com.android.internal.R.id.profile_badge);
}
@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 the app name first
final int appWidth = mAppName.getMeasuredWidth();
if (overFlow > 0 && mAppName.getVisibility() != GONE && appWidth > mChildMinWidth) {
int newSize = appWidth - Math.min(appWidth - mChildMinWidth, overFlow);
int childWidthSpec = MeasureSpec.makeMeasureSpec(newSize, MeasureSpec.AT_MOST);
mAppName.measure(childWidthSpec, wrapContentHeightSpec);
overFlow -= appWidth - newSize;
}
// still overflowing, finaly we shrink the header text
if (overFlow > 0 && mHeaderText.getVisibility() != GONE) {
// we're still too big
final int textWidth = mHeaderText.getMeasuredWidth();
int newSize = Math.max(0, textWidth - overFlow);
int childWidthSpec = MeasureSpec.makeMeasureSpec(newSize, MeasureSpec.AT_MOST);
mHeaderText.measure(childWidthSpec, wrapContentHeightSpec);
}
}
setMeasuredDimension(givenWidth, givenHeight);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int left = getPaddingStart();
int childCount = getChildCount();
int ownHeight = getHeight() - getPaddingTop() - getPaddingBottom();
for (int i = 0; i < childCount; i++) {
View child = getChildAt(i);
if (child.getVisibility() == GONE) {
continue;
}
int childHeight = child.getMeasuredHeight();
MarginLayoutParams params = (MarginLayoutParams) child.getLayoutParams();
left += params.getMarginStart();
int right = left + child.getMeasuredWidth();
int top = (int) (getPaddingTop() + (ownHeight - childHeight) / 2.0f);
int bottom = top + childHeight;
int layoutLeft = left;
int layoutRight = right;
if (child == mProfileBadge) {
int paddingEnd = getPaddingEnd();
if (mShowWorkBadgeAtEnd) {
paddingEnd = mContentEndMargin;
}
layoutRight = getWidth() - paddingEnd;
layoutLeft = layoutRight - child.getMeasuredWidth();
}
if (getLayoutDirection() == LAYOUT_DIRECTION_RTL) {
int ltrLeft = layoutLeft;
layoutLeft = getWidth() - layoutRight;
layoutRight = getWidth() - ltrLeft;
}
child.layout(layoutLeft, top, layoutRight, bottom);
left = right + params.getMarginEnd();
}
updateTouchListener();
}
@Override
public LayoutParams generateLayoutParams(AttributeSet attrs) {
return new ViewGroup.MarginLayoutParams(getContext(), attrs);
}
/**
* Set a {@link Drawable} to be displayed as a background on the header.
*/
public void setHeaderBackgroundDrawable(Drawable drawable) {
if (drawable != null) {
setWillNotDraw(false);
mBackground = drawable;
mBackground.setCallback(this);
setOutlineProvider(mProvider);
} else {
setWillNotDraw(true);
mBackground = null;
setOutlineProvider(null);
}
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
if (mBackground != null) {
mBackground.setBounds(0, 0, getWidth(), mHeaderBackgroundHeight);
mBackground.draw(canvas);
}
}
@Override
protected boolean verifyDrawable(Drawable who) {
return super.verifyDrawable(who) || who == mBackground;
}
@Override
protected void drawableStateChanged() {
if (mBackground != null && mBackground.isStateful()) {
mBackground.setState(getDrawableState());
}
}
private void updateTouchListener() {
if (mExpandClickListener != null) {
mTouchListener.bindTouchRects();
}
}
@Override
public void setOnClickListener(@Nullable OnClickListener l) {
mExpandClickListener = l;
setOnTouchListener(mExpandClickListener != null ? mTouchListener : null);
mExpandButton.setOnClickListener(mExpandClickListener);
updateTouchListener();
}
@RemotableViewMethod
public void setOriginalIconColor(int color) {
mIconColor = color;
}
public int getOriginalIconColor() {
return mIconColor;
}
@RemotableViewMethod
public void setOriginalNotificationColor(int color) {
mOriginalNotificationColor = color;
}
public int getOriginalNotificationColor() {
return mOriginalNotificationColor;
}
@RemotableViewMethod
public void setExpanded(boolean expanded) {
mExpanded = expanded;
updateExpandButton();
}
private void updateExpandButton() {
int drawableId;
if (mExpanded) {
drawableId = com.android.internal.R.drawable.ic_collapse_notification;
} else {
drawableId = com.android.internal.R.drawable.ic_expand_notification;
}
mExpandButton.setImageDrawable(getContext().getDrawable(drawableId));
mExpandButton.setColorFilter(mOriginalNotificationColor);
}
public void setShowWorkBadgeAtEnd(boolean showWorkBadgeAtEnd) {
if (showWorkBadgeAtEnd != mShowWorkBadgeAtEnd) {
setClipToPadding(!showWorkBadgeAtEnd);
mShowWorkBadgeAtEnd = showWorkBadgeAtEnd;
}
}
public View getWorkProfileIcon() {
return mProfileBadge;
}
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);
addWidthRect();
mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
}
private void addWidthRect() {
Rect r = new Rect();
r.top = 0;
r.bottom = (int) (32 * getResources().getDisplayMetrics().density);
r.left = 0;
r.right = getWidth();
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;
}
public ImageView getExpandButton() {
return mExpandButton;
}
@Override
public boolean hasOverlappingRendering() {
return false;
}
public boolean isInTouchRect(float x, float y) {
if (mExpandClickListener == null) {
return false;
}
return mTouchListener.isInside(x, y);
}
}