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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.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.RelativeLayout;
import com.android.camera.Util;
import com.android.gallery3d.R;
public class CameraRootView extends RelativeLayout {
private int mTopMargin = 0;
private int mBottomMargin = 0;
private int mLeftMargin = 0;
private int mRightMargin = 0;
private int mOffset = 0;
private Rect mCurrentInsets;
public CameraRootView(Context context, AttributeSet attrs) {
super(context, attrs);
// Layout the window as if we did not need navigation bar
setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
}
@Override
protected boolean fitSystemWindows(Rect insets) {
super.fitSystemWindows(insets);
mCurrentInsets = insets;
// insets include status bar, navigation bar, etc
// In this case, we are only concerned with the size of nav bar
if (mOffset > 0) return true;
if (insets.bottom > 0) {
mOffset = insets.bottom;
} else if (insets.right > 0) {
mOffset = insets.right;
}
return true;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int rotation = Util.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) {
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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