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/*
* Copyright (C) 2010 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 com.android.camera.ListPreference;
import com.android.camera.R;
import android.content.Context;
import android.hardware.Camera.CameraInfo;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
/**
* A view for switching the front/back camera.
*/
public class CameraPicker extends ImageView implements View.OnClickListener,
View.OnTouchListener {
private Listener mListener;
private ListPreference mPreference;
private CharSequence[] mCameras;
private int mCameraIndex;
public CameraPicker(Context context, AttributeSet attrs) {
super(context, attrs);
}
static public interface Listener {
public void onSharedPreferenceChanged();
}
public void setListener(Listener listener) {
mListener = listener;
}
public void initialize(ListPreference pref) {
mPreference = pref;
mCameras = pref.getEntryValues();
if (mCameras == null) return;
setOnClickListener(this);
setOnTouchListener(this);
String cameraId = pref.getValue();
setVisibility(View.VISIBLE);
if (mCameras[CameraInfo.CAMERA_FACING_FRONT].equals(cameraId)) {
mCameraIndex = CameraInfo.CAMERA_FACING_FRONT;
} else {
mCameraIndex = CameraInfo.CAMERA_FACING_BACK;
}
}
public void onClick(View v) {
if (mCameras == null) return;
int newCameraIndex = (mCameraIndex == CameraInfo.CAMERA_FACING_BACK)
? CameraInfo.CAMERA_FACING_FRONT
: CameraInfo.CAMERA_FACING_BACK;
mCameraIndex = newCameraIndex;
mPreference.setValue((String) mCameras[mCameraIndex]);
mListener.onSharedPreferenceChanged();
}
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
// Switching camera takes a long time. The drawable state changes
// after onClick. Set pressed state now so UI looks more responsive.
setPressed(true);
}
return false;
}
}
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