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/*
* Copyright (C) 2013 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.camera.ui;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Rect;
import android.hardware.display.DisplayManager;
import android.hardware.display.DisplayManager.DisplayListener;
import android.util.AttributeSet;
import android.view.View;
import android.widget.FrameLayout;
import com.android.camera.util.ApiHelper;
import com.android.camera.util.CameraUtil;
@SuppressLint("NewApi")
public class CameraRootView extends FrameLayout {
private int mTopMargin = 0;
private int mBottomMargin = 0;
private int mLeftMargin = 0;
private int mRightMargin = 0;
private final Rect mCurrentInsets = new Rect(0, 0, 0, 0);
private int mOffset = 0;
private Object mDisplayListener;
private MyDisplayListener mListener;
public interface MyDisplayListener {
public void onDisplayChanged();
}
public CameraRootView(Context context, AttributeSet attrs) {
super(context, attrs);
initDisplayListener();
}
@Override
protected boolean fitSystemWindows(Rect insets) {
// insets include status bar, navigation bar, etc
// In this case, we are only concerned with the size of nav bar
if (mCurrentInsets.equals(insets)) {
// Local copy of the insets is up to date. No need to do anything.
return false;
}
if (mOffset == 0) {
if (insets.bottom > 0) {
mOffset = insets.bottom;
} else if (insets.right > 0) {
mOffset = insets.right;
}
}
mCurrentInsets.set(insets);
// Make sure onMeasure will be called to adapt to the new insets.
requestLayout();
return false;
}
public void initDisplayListener() {
if (ApiHelper.HAS_DISPLAY_LISTENER) {
mDisplayListener = new DisplayListener() {
@Override
public void onDisplayAdded(int arg0) {}
@Override
public void onDisplayChanged(int arg0) {
if (mListener != null) {
mListener.onDisplayChanged();
}
}
@Override
public void onDisplayRemoved(int arg0) {}
};
}
}
public void removeDisplayChangeListener() {
mListener = null;
}
public void setDisplayChangeListener(MyDisplayListener listener) {
mListener = listener;
}
@Override
public void onAttachedToWindow() {
super.onAttachedToWindow();
if (ApiHelper.HAS_DISPLAY_LISTENER) {
((DisplayManager) getContext().getSystemService(Context.DISPLAY_SERVICE))
.registerDisplayListener((DisplayListener) mDisplayListener, null);
}
}
@Override
public void onDetachedFromWindow () {
super.onDetachedFromWindow();
if (ApiHelper.HAS_DISPLAY_LISTENER) {
((DisplayManager) getContext().getSystemService(Context.DISPLAY_SERVICE))
.unregisterDisplayListener((DisplayListener) mDisplayListener);
}
}
/*
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int rotation = CameraUtil.getDisplayRotation((Activity) getContext());
// all the layout code assumes camera device orientation to be portrait
// adjust rotation for landscape
int orientation = getResources().getConfiguration().orientation;
int camOrientation = (rotation % 180 == 0) ? Configuration.ORIENTATION_PORTRAIT
: Configuration.ORIENTATION_LANDSCAPE;
if (camOrientation != orientation) {
rotation = (rotation + 90) % 360;
}
// calculate margins
mLeftMargin = 0;
mRightMargin = 0;
mBottomMargin = 0;
mTopMargin = 0;
switch (rotation) {
case 0:
mBottomMargin += mOffset;
break;
case 90:
mRightMargin += mOffset;
break;
case 180:
mTopMargin += mOffset;
break;
case 270:
mLeftMargin += mOffset;
break;
}
if (mCurrentInsets != null) {
if (mCurrentInsets.right > 0) {
// navigation bar on the right
mRightMargin = mRightMargin > 0 ? mRightMargin : mCurrentInsets.right;
} else {
// navigation bar on the bottom
mBottomMargin = mBottomMargin > 0 ? mBottomMargin : mCurrentInsets.bottom;
}
}
// make sure all the children are resized
super.onMeasure(widthMeasureSpec - mLeftMargin - mRightMargin,
heightMeasureSpec - mTopMargin - mBottomMargin);
setMeasuredDimension(widthMeasureSpec, heightMeasureSpec);
}
@Override
public void onLayout(boolean changed, int l, int t, int r, int b) {
r -= l;
b -= t;
l = 0;
t = 0;
int orientation = getResources().getConfiguration().orientation;
// Lay out children
for (int i = 0; i < getChildCount(); i++) {
View v = getChildAt(i);
if (v instanceof CameraControls) {
// Lay out camera controls to center on the short side of the screen
// so that they stay in place during rotation
int width = v.getMeasuredWidth();
int height = v.getMeasuredHeight();
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
int left = (l + r - width) / 2;
v.layout(left, t + mTopMargin, left + width, b - mBottomMargin);
} else {
int top = (t + b - height) / 2;
v.layout(l + mLeftMargin, top, r - mRightMargin, top + height);
}
} else {
v.layout(l + mLeftMargin, t + mTopMargin, r - mRightMargin, b - mBottomMargin);
}
}
}
*/
}
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