/*
* Copyright (C) 2008 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.app.ActivityManager;
import android.app.StatusBarManager;
import android.content.Context;
import android.content.res.Resources;
import android.content.res.Resources.NotFoundException;
import android.util.AttributeSet;
import android.util.Slog;
import android.view.MotionEvent;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import com.android.systemui.R;
public class PhoneStatusBarView extends PanelBar {
private static final String TAG = "PhoneStatusBarView";
private static final boolean DEBUG = PhoneStatusBar.DEBUG;
PhoneStatusBar mBar;
int mScrimColor;
float mSettingsPanelDragzoneFrac;
float mSettingsPanelDragzoneMin;
boolean mFullWidthNotifications;
PanelView mFadingPanel = null;
PanelView mLastFullyOpenedPanel = null;
PanelView mNotificationPanel, mSettingsPanel;
private boolean mShouldFade;
public PhoneStatusBarView(Context context, AttributeSet attrs) {
super(context, attrs);
Resources res = getContext().getResources();
mScrimColor = res.getColor(R.color.notification_panel_scrim_color);
mSettingsPanelDragzoneMin = res.getDimension(R.dimen.settings_panel_dragzone_min);
try {
mSettingsPanelDragzoneFrac = res.getFraction(R.dimen.settings_panel_dragzone_fraction, 1, 1);
} catch (NotFoundException ex) {
mSettingsPanelDragzoneFrac = 0f;
}
mFullWidthNotifications = mSettingsPanelDragzoneFrac <= 0f;
}
public void setBar(PhoneStatusBar bar) {
mBar = bar;
}
public boolean hasFullWidthNotifications() {
return mFullWidthNotifications;
}
@Override
public void onAttachedToWindow() {
for (PanelView pv : mPanels) {
pv.setRubberbandingEnabled(!mFullWidthNotifications);
}
}
@Override
public void addPanel(PanelView pv) {
super.addPanel(pv);
if (pv.getId() == R.id.notification_panel) {
mNotificationPanel = pv;
} else if (pv.getId() == R.id.settings_panel){
mSettingsPanel = pv;
}
pv.setRubberbandingEnabled(!mFullWidthNotifications);
}
@Override
public boolean panelsEnabled() {
return ((mBar.mDisabled & StatusBarManager.DISABLE_EXPAND) == 0);
}
@Override
public boolean onRequestSendAccessibilityEvent(View child, AccessibilityEvent event) {
if (super.onRequestSendAccessibilityEvent(child, event)) {
// The status bar is very small so augment the view that the user is touching
// with the content of the status bar a whole. This way an accessibility service
// may announce the current item as well as the entire content if appropriate.
AccessibilityEvent record = AccessibilityEvent.obtain();
onInitializeAccessibilityEvent(record);
dispatchPopulateAccessibilityEvent(record);
event.appendRecord(record);
return true;
}
return false;
}
@Override
public PanelView selectPanelForTouch(MotionEvent touch) {
final float x = touch.getX();
if (mFullWidthNotifications) {
// No double swiping. If either panel is open, nothing else can be pulled down.
return ((mSettingsPanel == null ? 0 : mSettingsPanel.getExpandedHeight())
+ mNotificationPanel.getExpandedHeight() > 0)
? null
: mNotificationPanel;
}
// We split the status bar into thirds: the left 2/3 are for notifications, and the
// right 1/3 for quick settings. If you pull the status bar down a second time you'll
// toggle panels no matter where you pull it down.
final float w = getMeasuredWidth();
float region = (w * mSettingsPanelDragzoneFrac);
if (DEBUG) {
Slog.v(TAG, String.format(
"w=%.1f frac=%.3f region=%.1f min=%.1f x=%.1f w-x=%.1f",
w, mSettingsPanelDragzoneFrac, region, mSettingsPanelDragzoneMin, x, (w-x)));
}
if (region < mSettingsPanelDragzoneMin) region = mSettingsPanelDragzoneMin;
return (w - x < region) ? mSettingsPanel : mNotificationPanel;
}
@Override
public void onPanelPeeked() {
super.onPanelPeeked();
mBar.makeExpandedVisible(true);
}
@Override
public void startOpeningPanel(PanelView panel) {
super.startOpeningPanel(panel);
// we only want to start fading if this is the "first" or "last" panel,
// which is kind of tricky to determine
mShouldFade = (mFadingPanel == null || mFadingPanel.isFullyExpanded());
if (DEBUG) {
Slog.v(TAG, "start opening: " + panel + " shouldfade=" + mShouldFade);
}
mFadingPanel = panel;
}
@Override
public void onAllPanelsCollapsed() {
super.onAllPanelsCollapsed();
// give animations time to settle
mBar.makeExpandedInvisibleSoon();
mFadingPanel = null;
mLastFullyOpenedPanel = null;
}
@Override
public void onPanelFullyOpened(PanelView openPanel) {
super.onPanelFullyOpened(openPanel);
if (openPanel != mLastFullyOpenedPanel) {
openPanel.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
}
mFadingPanel = openPanel;
mLastFullyOpenedPanel = openPanel;
mShouldFade = true; // now you own the fade, mister
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return mBar.interceptTouchEvent(event) || super.onTouchEvent(event);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
return mBar.interceptTouchEvent(event) || super.onInterceptTouchEvent(event);
}
@Override
public void panelExpansionChanged(PanelView panel, float frac) {
super.panelExpansionChanged(panel, frac);
if (DEBUG) {
Slog.v(TAG, "panelExpansionChanged: f=" + frac);
}
if (panel == mFadingPanel && mScrimColor != 0 && ActivityManager.isHighEndGfx()) {
if (mShouldFade) {
frac = mPanelExpandedFractionSum; // don't judge me
// let's start this 20% of the way down the screen
frac = frac * 1.2f - 0.2f;
if (frac <= 0) {
mBar.mStatusBarWindow.setBackgroundColor(0);
} else {
// woo, special effects
final float k = (float)(1f-0.5f*(1f-Math.cos(3.14159f * Math.pow(1f-frac, 2f))));
// attenuate background color alpha by k
final int color = (int) ((mScrimColor >>> 24) * k) << 24 | (mScrimColor & 0xFFFFFF);
mBar.mStatusBarWindow.setBackgroundColor(color);
}
}
}
// fade out the panel as it gets buried into the status bar to avoid overdrawing the
// status bar on the last frame of a close animation
final int H = mBar.getStatusBarHeight();
final float ph = panel.getExpandedHeight() + panel.getPaddingBottom();
float alpha = 1f;
if (ph < 2*H) {
if (ph < H) alpha = 0f;
else alpha = (ph - H) / H;
alpha = alpha * alpha; // get there faster
}
if (panel.getAlpha() != alpha) {
panel.setAlpha(alpha);
}
mBar.updateCarrierLabelVisibility(false);
}
}