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/*
* Copyright (C) 2011 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.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.RelativeLayout;
/**
* A layout which handles the the width of the control panel, which contains
* the shutter button, thumbnail, front/back camera picker, and mode picker.
* The purpose of this is to have a consistent width of control panel in camera,
* camcorder, and panorama modes. The control panel can also be GONE and the
* preview can expand to full-screen in panorama.
*/
public class ControlPanelLayout extends RelativeLayout {
private static final String TAG = "ControlPanelLayout";
public ControlPanelLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onMeasure(int widthSpec, int heightSpec) {
int widthSpecSize = MeasureSpec.getSize(widthSpec);
int heightSpecSize = MeasureSpec.getSize(heightSpec);
int widthMode = MeasureSpec.getMode(widthSpec);
int measuredWidth = 0;
if (widthSpecSize > 0 && heightSpecSize > 0 && widthMode == MeasureSpec.AT_MOST) {
// Calculate how big 4:3 preview occupies. Then deduct it from the
// width of the parent.
measuredWidth = (int) (widthSpecSize - heightSpecSize / 3.0 * 4.0 - 16);
} else {
Log.e(TAG, "layout_width of ControlPanelLayout should be wrap_content");
}
// Make sure the width is bigger than the minimum width.
int minWidth = getSuggestedMinimumWidth();
if (minWidth > measuredWidth) {
measuredWidth = minWidth;
}
// The width cannot be bigger than the constraint.
if (widthMode == MeasureSpec.AT_MOST && measuredWidth > widthSpecSize) {
measuredWidth = widthSpecSize;
}
super.onMeasure(MeasureSpec.makeMeasureSpec(measuredWidth, MeasureSpec.EXACTLY),
heightSpec);
}
}
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