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/*
* Copyright (C) 2012 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.systemui.statusbar.phone;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import com.android.systemui.R;
import com.android.systemui.statusbar.GestureRecorder;
import com.android.systemui.statusbar.stack.NotificationStackScrollLayout;
public class NotificationPanelView extends PanelView {
public static final boolean DEBUG_GESTURES = true;
PhoneStatusBar mStatusBar;
private NotificationStackScrollLayout mNotificationStackScroller;
private int[] mTempLocation = new int[2];
private int[] mTempChildLocation = new int[2];
private View mNotificationParent;
public NotificationPanelView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public void setStatusBar(PhoneStatusBar bar) {
if (mStatusBar != null) {
mStatusBar.setOnFlipRunnable(null);
}
mStatusBar = bar;
if (bar != null) {
mStatusBar.setOnFlipRunnable(new Runnable() {
@Override
public void run() {
requestPanelHeightUpdate();
}
});
}
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
mNotificationStackScroller = (NotificationStackScrollLayout)
findViewById(R.id.notification_stack_scroller);
mNotificationParent = findViewById(R.id.notification_container_parent);
}
@Override
public void fling(float vel, boolean always) {
GestureRecorder gr = ((PhoneStatusBarView) mBar).mBar.getGestureRecorder();
if (gr != null) {
gr.tag(
"fling " + ((vel > 0) ? "open" : "closed"),
"notifications,v=" + vel);
}
super.fling(vel, always);
}
@Override
public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
event.getText()
.add(getContext().getString(R.string.accessibility_desc_notification_shade));
return true;
}
return super.dispatchPopulateAccessibilityEvent(event);
}
/**
* Gets the relative position of a view on the screen in regard to this view.
*
* @param requestedView the view we want to find the relative position for
* @return
*/
private int getRelativeTop(View requestedView) {
getLocationOnScreen(mTempLocation);
requestedView.getLocationOnScreen(mTempChildLocation);
return mTempChildLocation[1] - mTempLocation[1];
}
@Override
public boolean onTouchEvent(MotionEvent event) {
// TODO: Handle doublefinger swipe to notifications again. Look at history for a reference
// implementation.
return super.onTouchEvent(event);
}
@Override
protected boolean isScrolledToBottom() {
if (!isInSettings()) {
return mNotificationStackScroller.isScrolledToBottom();
}
return super.isScrolledToBottom();
}
@Override
protected int getMaxPanelHeight() {
if (!isInSettings()) {
int maxPanelHeight = super.getMaxPanelHeight();
int emptyBottomMargin = mNotificationStackScroller.getEmptyBottomMargin();
return maxPanelHeight - emptyBottomMargin;
}
return super.getMaxPanelHeight();
}
private boolean isInSettings() {
return mStatusBar != null && mStatusBar.isFlippedToSettings();
}
@Override
protected void onHeightUpdated(float expandedHeight) {
updateNotificationStackHeight(expandedHeight);
}
/**
* Update the height of the {@link #mNotificationStackScroller} to the new expanded height.
* This is much more efficient than doing it over the layout pass.
*
* @param expandedHeight the new expanded height
*/
private void updateNotificationStackHeight(float expandedHeight) {
float childOffset = getRelativeTop(mNotificationStackScroller)
- mNotificationParent.getTranslationY();
int newStackHeight = (int) (expandedHeight - childOffset);
int itemHeight = mNotificationStackScroller.getItemHeight();
int bottomStackPeekSize = mNotificationStackScroller.getBottomStackPeekSize();
int minStackHeight = itemHeight + bottomStackPeekSize;
if (newStackHeight >= minStackHeight) {
mNotificationParent.setTranslationY(0);
mNotificationStackScroller.setCurrentStackHeight(newStackHeight);
} else {
// We did not reach the position yet where we actually start growing,
// so we translate the stack upwards.
int translationY = (newStackHeight - minStackHeight);
// A slight parallax effect is introduced in order for the stack to catch up with
// the top card.
float partiallyThere = (float) newStackHeight / minStackHeight;
partiallyThere = Math.max(0, partiallyThere);
translationY += (1 - partiallyThere) * bottomStackPeekSize;
mNotificationParent.setTranslationY(translationY);
mNotificationStackScroller.setCurrentStackHeight(
(int) (expandedHeight - (childOffset + translationY)));
}
}
@Override
protected int getDesiredMeasureHeight() {
return mMaxPanelHeight;
}
}
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