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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.gallery3d.photoeditor;
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup.OnHierarchyChangeListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.RelativeLayout;
import com.android.gallery3d.R;
import java.util.ArrayList;
import java.util.List;
/**
* Toolbar that contains all tools and controls their idle/awake behaviors from UI thread.
*/
public class Toolbar extends RelativeLayout implements OnHierarchyChangeListener {
private final ToolbarIdleHandler idleHandler;
private final List<View> tools = new ArrayList<View>();
public Toolbar(Context context, AttributeSet attrs) {
super(context, attrs);
setOnHierarchyChangeListener(this);
idleHandler = new ToolbarIdleHandler(this);
idleHandler.killIdle();
}
@Override
public void onChildViewAdded(View parent, View child) {
// Photo-view isn't treated as a tool that responds to user events.
if (child.getId() != R.id.photo_view) {
tools.add(child);
}
}
@Override
public void onChildViewRemoved(View parent, View child) {
tools.remove(child);
}
public List<View> getTools() {
return tools;
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
idleHandler.killIdle();
return super.dispatchTouchEvent(ev);
}
private static class ToolbarIdleHandler {
private static final int MAKE_IDLE = 1;
private static final int TIMEOUT_IDLE = 8000;
private final List<View> tools;
private final Handler mainHandler;
private final Animation fadeIn;
private final Animation fadeOut;
private boolean idle;
public ToolbarIdleHandler(Toolbar toolbar) {
tools = toolbar.getTools();
mainHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MAKE_IDLE:
if (!idle) {
idle = true;
for (View view : tools) {
view.startAnimation(fadeOut);
}
}
break;
}
}
};
Context context = toolbar.getContext();
fadeIn = AnimationUtils.loadAnimation(context, R.anim.photoeditor_fade_in);
fadeOut = AnimationUtils.loadAnimation(context, R.anim.photoeditor_fade_out);
}
public void killIdle() {
mainHandler.removeMessages(MAKE_IDLE);
if (idle) {
idle = false;
for (View view : tools) {
view.startAnimation(fadeIn);
}
}
mainHandler.sendEmptyMessageDelayed(MAKE_IDLE, TIMEOUT_IDLE);
}
}
}
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