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/*
* Copyright (C) 2012 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.tools.sdkcontroller.handlers;
import android.content.Context;
import android.graphics.Point;
import android.os.Message;
import android.util.Log;
import com.android.tools.sdkcontroller.lib.EmulatorConnection;
public class MultiTouchHandler extends BaseHandler {
@SuppressWarnings("hiding")
private static final String TAG = MultiTouchHandler.class.getSimpleName();
/**
* A new frame buffer has been received from the emulator.
* Parameter {@code obj} is a {@code byte[] array} containing the screen data.
*/
public static final int EVENT_FRAME_BUFFER = 1;
/**
* A multi-touch "start" command has been received from the emulator.
* Parameter {@code obj} is the string parameter from the start command.
*/
public static final int EVENT_MT_START = 2;
/**
* A multi-touch "stop" command has been received from the emulator.
* There is no {@code obj} parameter associated.
*/
public static final int EVENT_MT_STOP = 3;
private static final Point mViewSize = new Point(0, 0);
public MultiTouchHandler() {
super(HandlerType.MultiTouch, EmulatorConnection.MULTITOUCH_PORT);
}
public void setViewSize(int width, int height) {
mViewSize.set(width, height);
}
@Override
public void onStart(EmulatorConnection connection, Context context) {
super.onStart(connection, context);
}
@Override
public void onStop() {
super.onStop();
}
/**
* Called when a query is received from the emulator. NOTE: This method is
* called from the I/O loop.
*
* @param query Name of the query received from the emulator. The allowed
* queries are: - 'start' - Starts delivering touch screen events
* to the emulator. - 'stop' - Stops delivering touch screen
* events to the emulator.
* @param param Query parameters.
* @return Zero-terminated reply string. String must be formatted as such:
* "ok|ko[:reply data]"
*/
@Override
public String onEmulatorQuery(String query, String param) {
if (query.contentEquals("start")) {
Message msg = Message.obtain();
msg.what = EVENT_MT_START;
msg.obj = param;
notifyUiHandlers(msg);
return "ok:" + mViewSize.x + "x" + mViewSize.y + "\0";
} else if (query.contentEquals("stop")) {
notifyUiHandlers(EVENT_MT_STOP);
return "ok\0";
} else {
Log.e(TAG, "Unknown query " + query + "(" + param + ")");
return "ko:Unknown query\0";
}
}
/**
* Called when a BLOB query is received from the emulator.
* <p/>
* This query is used to deliver framebuffer updates in the emulator. The
* blob contains an update header, followed by the bitmap containing updated
* rectangle. The header is defined as MTFrameHeader structure in
* external/qemu/android/multitouch-port.h
* <p/>
* NOTE: This method is called from the I/O loop, so all communication with
* the emulator will be "on hold" until this method returns.
*
* @param array contains BLOB data for the query.
* @return Empty string: this query doesn't require any response.
*/
@Override
public String onEmulatorBlobQuery(byte[] array) {
Message msg = Message.obtain();
msg.what = EVENT_FRAME_BUFFER;
msg.obj = array;
notifyUiHandlers(msg);
return "";
}
}
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