1 /*
   2  * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.lwawt.macosx;
  27 
  28 import java.awt.*;
  29 import java.awt.peer.*;
  30 
  31 import sun.awt.CGraphicsDevice;
  32 
  33 class CRobot implements RobotPeer {
  34     private static final int MOUSE_LOCATION_UNKNOWN      = -1;
  35 
  36     private final CGraphicsDevice fDevice;
  37     private int mouseLastX = MOUSE_LOCATION_UNKNOWN;
  38     private int mouseLastY = MOUSE_LOCATION_UNKNOWN;
  39 
  40     // OS X doesn't generate dragged event as a result of button press and
  41     // mouse move events. This means that we have to track buttons state
  42     // in order to generate dragged events ourselves.
  43     private int mouseButtonsState = 0;
  44 
  45     /**
  46      * Uses the given GraphicsDevice as the coordinate system for subsequent
  47      * coordinate calls.
  48      */
  49     public CRobot(Robot r, CGraphicsDevice d) {
  50         fDevice = d;
  51         initRobot();
  52     }
  53 
  54     @Override
  55     public void dispose() {
  56     }
  57 
  58     /**
  59      * Moves mouse pointer to given screen coordinates.
  60      * @param x X position
  61      * @param y Y position
  62      */
  63     @Override
  64     public void mouseMove(int x, int y) {
  65         mouseLastX = x;
  66         mouseLastY = y;
  67 
  68         mouseEvent(fDevice.getCGDisplayID(), mouseLastX, mouseLastY,
  69                    mouseButtonsState, true, true);
  70     }
  71 
  72     /**
  73      * Presses one or more mouse buttons.
  74      *
  75      * @param buttons the button mask (combination of
  76      * {@code InputEvent.BUTTON1/2/3_MASK})
  77      */
  78     @Override
  79     public void mousePress(int buttons) {
  80         mouseButtonsState |= buttons;
  81         checkMousePos();
  82         mouseEvent(fDevice.getCGDisplayID(), mouseLastX, mouseLastY,
  83                    buttons, true, false);
  84     }
  85 
  86     /**
  87      * Releases one or more mouse buttons.
  88      *
  89      * @param buttons the button mask (combination of
  90      * {@code InputEvent.BUTTON1/2/3_MASK})
  91      */
  92     @Override
  93     public void mouseRelease(int buttons) {
  94         mouseButtonsState &= ~buttons;
  95         checkMousePos();
  96         mouseEvent(fDevice.getCGDisplayID(), mouseLastX, mouseLastY,
  97                    buttons, false, false);
  98     }
  99 
 100     /**
 101      * Set unknown mouse location, if needed.
 102      */
 103     private void checkMousePos() {
 104         if (mouseLastX == MOUSE_LOCATION_UNKNOWN ||
 105                 mouseLastY == MOUSE_LOCATION_UNKNOWN) {
 106 
 107             Rectangle deviceBounds = fDevice.getDefaultConfiguration().getBounds();
 108             Point mousePos = CCursorManager.getInstance().getCursorPosition();
 109 
 110             if (mousePos.x < deviceBounds.x) {
 111                 mousePos.x = deviceBounds.x;
 112             }
 113             else if (mousePos.x > deviceBounds.x + deviceBounds.width) {
 114                 mousePos.x = deviceBounds.x + deviceBounds.width;
 115             }
 116 
 117             if (mousePos.y < deviceBounds.y) {
 118                 mousePos.y = deviceBounds.y;
 119             }
 120             else if (mousePos.y > deviceBounds.y + deviceBounds.height) {
 121                 mousePos.y = deviceBounds.y + deviceBounds.height;
 122             }
 123 
 124             mouseLastX = mousePos.x;
 125             mouseLastY = mousePos.y;
 126         }
 127     }
 128 
 129     @Override
 130     public native void mouseWheel(int wheelAmt);
 131 
 132     /**
 133      * Presses a given key.
 134      * <p>
 135      * Key codes that have more than one physical key associated with them
 136      * (e.g. {@code KeyEvent.VK_SHIFT} could mean either the
 137      * left or right shift key) will map to the left key.
 138      * <p>
 139      * Assumes that the
 140      * peer implementations will throw an exception for other bogus
 141      * values e.g. -1, 999999
 142      *
 143      * @param keycode the key to press (e.g. {@code KeyEvent.VK_A})
 144      */
 145     @Override
 146     public void keyPress(final int keycode) {
 147         keyEvent(keycode, true);
 148     }
 149 
 150     /**
 151      * Releases a given key.
 152      * <p>
 153      * Key codes that have more than one physical key associated with them
 154      * (e.g. {@code KeyEvent.VK_SHIFT} could mean either the
 155      * left or right shift key) will map to the left key.
 156      * <p>
 157      * Assumes that the
 158      * peer implementations will throw an exception for other bogus
 159      * values e.g. -1, 999999
 160      *
 161      * @param keycode the key to release (e.g. {@code KeyEvent.VK_A})
 162      */
 163     @Override
 164     public void keyRelease(final int keycode) {
 165         keyEvent(keycode, false);
 166     }
 167 
 168     /**
 169      * Returns the color of a pixel at the given screen coordinates.
 170      * @param x X position of pixel
 171      * @param y Y position of pixel
 172      * @return color of the pixel
 173      */
 174     @Override
 175     public int getRGBPixel(int x, int y) {
 176         int c[] = new int[1];
 177         getScreenPixels(new Rectangle(x, y, 1, 1), 1, c);
 178         return c[0];
 179     }
 180 
 181     /**
 182      * Creates an image containing pixels read from the screen.
 183      * @param bounds the rect to capture in screen coordinates
 184      * @return the array of pixels
 185      */
 186     @Override
 187     public int [] getRGBPixels(final Rectangle bounds) {
 188         int c[] = new int[bounds.width * bounds.height];
 189         double scale = fDevice.getScaleFactor();
 190         getScreenPixels(bounds, scale, c);
 191 
 192         return c;
 193     }
 194 
 195     private native void initRobot();
 196     private native void mouseEvent(int displayID, int lastX, int lastY,
 197                                    int buttonsState,
 198                                    boolean isButtonsDownState,
 199                                    boolean isMouseMove);
 200     private native void keyEvent(int javaKeyCode, boolean keydown);
 201     private void getScreenPixels(Rectangle r, double scale, int[] pixels){
 202         nativeGetScreenPixels(r.x, r.y, r.width, r.height, scale, pixels);
 203     }
 204     private native void nativeGetScreenPixels(int x, int y, int width, int height, double scale, int[] pixels);
 205 }