1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.commands.input;
18
19import android.hardware.input.InputManager;
20import android.os.SystemClock;
21import android.util.Log;
22import android.view.InputDevice;
23import android.view.KeyCharacterMap;
24import android.view.KeyEvent;
25import android.view.MotionEvent;
26
27/**
28 * Command that sends key events to the device, either by their keycode, or by
29 * desired character output.
30 */
31
32public class Input {
33    private static final String TAG = "Input";
34
35    /**
36     * Command-line entry point.
37     *
38     * @param args The command-line arguments
39     */
40    public static void main(String[] args) {
41        (new Input()).run(args);
42    }
43
44    private void run(String[] args) {
45        if (args.length < 1) {
46            showUsage();
47            return;
48        }
49
50        String command = args[0];
51
52        try {
53            if (command.equals("text")) {
54                if (args.length == 2) {
55                    sendText(args[1]);
56                    return;
57                }
58            } else if (command.equals("keyevent")) {
59                if (args.length == 2) {
60                    int keyCode = KeyEvent.keyCodeFromString(args[1]);
61                    if (keyCode == KeyEvent.KEYCODE_UNKNOWN) {
62                        keyCode = KeyEvent.keyCodeFromString("KEYCODE_" + args[1]);
63                    }
64                    sendKeyEvent(keyCode);
65                    return;
66                }
67            } else if (command.equals("tap")) {
68                if (args.length == 3) {
69                    sendTap(InputDevice.SOURCE_TOUCHSCREEN, Float.parseFloat(args[1]), Float.parseFloat(args[2]));
70                    return;
71                }
72            } else if (command.equals("swipe")) {
73                if (args.length == 5) {
74                    sendSwipe(InputDevice.SOURCE_TOUCHSCREEN, Float.parseFloat(args[1]), Float.parseFloat(args[2]),
75                            Float.parseFloat(args[3]), Float.parseFloat(args[4]));
76                    return;
77                }
78            } else if (command.equals("touchscreen") || command.equals("touchpad")) {
79                // determine input source
80                int inputSource = InputDevice.SOURCE_TOUCHSCREEN;
81                if (command.equals("touchpad")) {
82                    inputSource = InputDevice.SOURCE_TOUCHPAD;
83                }
84                // determine subcommand
85                if (args.length > 1) {
86                    String subcommand = args[1];
87                    if (subcommand.equals("tap")) {
88                        if (args.length == 4) {
89                            sendTap(inputSource, Float.parseFloat(args[2]),
90                                    Float.parseFloat(args[3]));
91                            return;
92                        }
93                    } else if (subcommand.equals("swipe")) {
94                        if (args.length == 6) {
95                            sendSwipe(inputSource, Float.parseFloat(args[2]),
96                                    Float.parseFloat(args[3]), Float.parseFloat(args[4]),
97                                    Float.parseFloat(args[5]));
98                            return;
99                        }
100                    }
101                }
102            } else if (command.equals("trackball")) {
103                // determine subcommand
104                if (args.length > 1) {
105                    String subcommand = args[1];
106                    if (subcommand.equals("press")) {
107                        sendTap(InputDevice.SOURCE_TRACKBALL, 0.0f, 0.0f);
108                        return;
109                    } else if (subcommand.equals("roll")) {
110                        if (args.length == 4) {
111                            sendMove(InputDevice.SOURCE_TRACKBALL, Float.parseFloat(args[2]),
112                                    Float.parseFloat(args[3]));
113                            return;
114                        }
115                    }
116                }
117            } else {
118                System.err.println("Error: Unknown command: " + command);
119                showUsage();
120                return;
121            }
122        } catch (NumberFormatException ex) {
123        }
124        System.err.println("Error: Invalid arguments for command: " + command);
125        showUsage();
126    }
127
128    /**
129     * Convert the characters of string text into key event's and send to
130     * device.
131     *
132     * @param text is a string of characters you want to input to the device.
133     */
134    private void sendText(String text) {
135
136        StringBuffer buff = new StringBuffer(text);
137
138        boolean escapeFlag = false;
139        for (int i=0; i<buff.length(); i++) {
140            if (escapeFlag) {
141                escapeFlag = false;
142                if (buff.charAt(i) == 's') {
143                    buff.setCharAt(i, ' ');
144                    buff.deleteCharAt(--i);
145                }
146            }
147            if (buff.charAt(i) == '%') {
148                escapeFlag = true;
149            }
150        }
151
152        char[] chars = buff.toString().toCharArray();
153
154        KeyCharacterMap kcm = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD);
155        KeyEvent[] events = kcm.getEvents(chars);
156        for(int i = 0; i < events.length; i++) {
157            injectKeyEvent(events[i]);
158        }
159    }
160
161    private void sendKeyEvent(int keyCode) {
162        long now = SystemClock.uptimeMillis();
163        injectKeyEvent(new KeyEvent(now, now, KeyEvent.ACTION_DOWN, keyCode, 0, 0,
164                KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD));
165        injectKeyEvent(new KeyEvent(now, now, KeyEvent.ACTION_UP, keyCode, 0, 0,
166                KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0, InputDevice.SOURCE_KEYBOARD));
167    }
168
169    private void sendTap(int inputSource, float x, float y) {
170        long now = SystemClock.uptimeMillis();
171        injectMotionEvent(inputSource, MotionEvent.ACTION_DOWN, now, x, y, 1.0f);
172        injectMotionEvent(inputSource, MotionEvent.ACTION_UP, now, x, y, 0.0f);
173    }
174
175    private void sendSwipe(int inputSource, float x1, float y1, float x2, float y2) {
176        final int NUM_STEPS = 11;
177        long now = SystemClock.uptimeMillis();
178        injectMotionEvent(inputSource, MotionEvent.ACTION_DOWN, now, x1, y1, 1.0f);
179        for (int i = 1; i < NUM_STEPS; i++) {
180            float alpha = (float) i / NUM_STEPS;
181            injectMotionEvent(inputSource, MotionEvent.ACTION_MOVE, now, lerp(x1, x2, alpha),
182                    lerp(y1, y2, alpha), 1.0f);
183        }
184        injectMotionEvent(inputSource, MotionEvent.ACTION_UP, now, x1, y1, 0.0f);
185    }
186
187    /**
188     * Sends a simple zero-pressure move event.
189     *
190     * @param inputSource the InputDevice.SOURCE_* sending the input event
191     * @param dx change in x coordinate due to move
192     * @param dy change in y coordinate due to move
193     */
194    private void sendMove(int inputSource, float dx, float dy) {
195        long now = SystemClock.uptimeMillis();
196        injectMotionEvent(inputSource, MotionEvent.ACTION_MOVE, now, dx, dy, 0.0f);
197    }
198
199    private void injectKeyEvent(KeyEvent event) {
200        Log.i(TAG, "injectKeyEvent: " + event);
201        InputManager.getInstance().injectInputEvent(event,
202                InputManager.INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH);
203    }
204
205    /**
206     * Builds a MotionEvent and injects it into the event stream.
207     *
208     * @param inputSource the InputDevice.SOURCE_* sending the input event
209     * @param action the MotionEvent.ACTION_* for the event
210     * @param when the value of SystemClock.uptimeMillis() at which the event happened
211     * @param x x coordinate of event
212     * @param y y coordinate of event
213     * @param pressure pressure of event
214     */
215    private void injectMotionEvent(int inputSource, int action, long when, float x, float y, float pressure) {
216        final float DEFAULT_SIZE = 1.0f;
217        final int DEFAULT_META_STATE = 0;
218        final float DEFAULT_PRECISION_X = 1.0f;
219        final float DEFAULT_PRECISION_Y = 1.0f;
220        final int DEFAULT_DEVICE_ID = 0;
221        final int DEFAULT_EDGE_FLAGS = 0;
222        MotionEvent event = MotionEvent.obtain(when, when, action, x, y, pressure, DEFAULT_SIZE,
223                DEFAULT_META_STATE, DEFAULT_PRECISION_X, DEFAULT_PRECISION_Y, DEFAULT_DEVICE_ID,
224                DEFAULT_EDGE_FLAGS);
225        event.setSource(inputSource);
226        Log.i("Input", "injectMotionEvent: " + event);
227        InputManager.getInstance().injectInputEvent(event,
228                InputManager.INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH);
229    }
230
231    private static final float lerp(float a, float b, float alpha) {
232        return (b - a) * alpha + a;
233    }
234
235    private void showUsage() {
236        System.err.println("usage: input ...");
237        System.err.println("       input text <string>");
238        System.err.println("       input keyevent <key code number or name>");
239        System.err.println("       input [touchscreen|touchpad] tap <x> <y>");
240        System.err.println("       input [touchscreen|touchpad] swipe <x1> <y1> <x2> <y2>");
241        System.err.println("       input trackball press");
242        System.err.println("       input trackball roll <dx> <dy>");
243    }
244}
245