Logo Search packages:      
Sourcecode: jinput version File versions  Download package

RawDevice.java

/*
 * %W% %E%
 *
 * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*****************************************************************************
 * Copyright (c) 2003 Sun Microsystems, Inc.  All Rights Reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistribution of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistribution in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materails provided with the distribution.
 *
 * Neither the name Sun Microsystems, Inc. or the names of the contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any kind.
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
 * ANY IMPLIED WARRANT OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMEN, ARE HEREBY EXCLUDED.  SUN MICROSYSTEMS, INC. ("SUN") AND
 * ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS
 * A RESULT OF USING, MODIFYING OR DESTRIBUTING THIS SOFTWARE OR ITS 
 * DERIVATIVES.  IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
 * INCIDENTAL OR PUNITIVE DAMAGES.  HOWEVER CAUSED AND REGARDLESS OF THE THEORY
 * OF LIABILITY, ARISING OUT OF THE USE OF OUR INABILITY TO USE THIS SOFTWARE,
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that this software is not designed or intended for us in
 * the design, construction, operation or maintenance of any nuclear facility
 *
 *****************************************************************************/
package net.java.games.input;

import java.io.IOException;

/** Java wrapper of RAWDEVICELIST
 * @author elias
 * @version 1.0
 */
00047 final class RawDevice {
      public final static int RI_MOUSE_LEFT_BUTTON_DOWN   = 0x0001;  // Left Button changed to down.
      public final static int RI_MOUSE_LEFT_BUTTON_UP  = 0x0002;  // Left Button changed to up.
      public final static int RI_MOUSE_RIGHT_BUTTON_DOWN  = 0x0004;  // Right Button changed to down.
      public final static int RI_MOUSE_RIGHT_BUTTON_UP      = 0x0008;  // Right Button changed to up.
      public final static int RI_MOUSE_MIDDLE_BUTTON_DOWN = 0x0010;  // Middle Button changed to down.
      public final static int RI_MOUSE_MIDDLE_BUTTON_UP   = 0x0020;  // Middle Button changed to up.

      public final static int RI_MOUSE_BUTTON_1_DOWN    = RI_MOUSE_LEFT_BUTTON_DOWN;
      public final static int RI_MOUSE_BUTTON_1_UP          = RI_MOUSE_LEFT_BUTTON_UP;
      public final static int RI_MOUSE_BUTTON_2_DOWN    = RI_MOUSE_RIGHT_BUTTON_DOWN;
      public final static int RI_MOUSE_BUTTON_2_UP          = RI_MOUSE_RIGHT_BUTTON_UP;
      public final static int RI_MOUSE_BUTTON_3_DOWN    = RI_MOUSE_MIDDLE_BUTTON_DOWN;
      public final static int RI_MOUSE_BUTTON_3_UP          = RI_MOUSE_MIDDLE_BUTTON_UP;

      public final static int RI_MOUSE_BUTTON_4_DOWN    = 0x0040;
      public final static int RI_MOUSE_BUTTON_4_UP          = 0x0080;
      public final static int RI_MOUSE_BUTTON_5_DOWN    = 0x0100;
      public final static int RI_MOUSE_BUTTON_5_UP          = 0x0200;

      /*
       * If usButtonFlags has RI_MOUSE_WHEEL, the wheel delta is stored in usButtonData.
       * Take it as a signed value.
       */
      public final static int RI_MOUSE_WHEEL                  = 0x0400;

      public final static int MOUSE_MOVE_RELATIVE            = 0;
      public final static int MOUSE_MOVE_ABSOLUTE            = 1;
      public final static int MOUSE_VIRTUAL_DESKTOP   = 0x02;  // the coordinates are mapped to the virtual desktop
      public final static int MOUSE_ATTRIBUTES_CHANGED = 0x04;  // requery for mouse attributes

      public final static int RIM_TYPEHID = 2;
      public final static int RIM_TYPEKEYBOARD = 1;
      public final static int RIM_TYPEMOUSE = 0;

      public final static int WM_KEYDOWN                            = 0x0100;
      public final static int WM_KEYUP                                  = 0x0101;
      public final static int WM_SYSKEYDOWN                          = 0x0104;
      public final static int WM_SYSKEYUP                          = 0x0105;

      private final RawInputEventQueue queue;
      private final long handle;
      private final int type;

      /* Events from the event queue thread end here */
      private DataQueue keyboard_events;
      private DataQueue mouse_events;

      /* After processing in poll*(), the events are placed here */
      private DataQueue processed_keyboard_events;
      private DataQueue processed_mouse_events;

      /* mouse state */
      private final boolean[] button_states = new boolean[5];
      private int wheel;
      private int relative_x;
      private int relative_y;
      private int last_x;
      private int last_y;

      // Last x, y for converting absolute events to relative
      private int event_relative_x;
      private int event_relative_y;
      private int event_last_x;
      private int event_last_y;

      /* keyboard state */
      private final boolean[] key_states = new boolean[0xFF];

      public RawDevice(RawInputEventQueue queue, long handle, int type) {
            this.queue = queue;
            this.handle = handle;
            this.type = type;
            setBufferSize(AbstractController.EVENT_QUEUE_DEPTH);
      }

      /* Careful, this is called from the event queue thread */
      public final synchronized void addMouseEvent(long millis, int flags, int button_flags, int button_data, long raw_buttons, long last_x, long last_y, long extra_information) {
            if (mouse_events.hasRemaining()) {
                  RawMouseEvent event = (RawMouseEvent)mouse_events.get();
                  event.set(millis, flags, button_flags, button_data, raw_buttons,  last_x, last_y, extra_information);
            }
      }

      /* Careful, this is called from the event queue thread */
      public final synchronized void addKeyboardEvent(long millis, int make_code, int flags, int vkey, int message, long extra_information) {
            if (keyboard_events.hasRemaining()) {
                  RawKeyboardEvent event = (RawKeyboardEvent)keyboard_events.get();
                  event.set(millis, make_code, flags, vkey, message, extra_information);
            }
      }

      public final synchronized void pollMouse() {
            relative_x = relative_y = wheel = 0;
            mouse_events.flip();
            while (mouse_events.hasRemaining()) {
                  RawMouseEvent event = (RawMouseEvent)mouse_events.get();
                  boolean has_update = processMouseEvent(event);
                  if (has_update && processed_mouse_events.hasRemaining()) {
                        RawMouseEvent processed_event = (RawMouseEvent)processed_mouse_events.get();
                        processed_event.set(event);
                  }
            }
            mouse_events.compact();
      }

      public final synchronized void pollKeyboard() {
            keyboard_events.flip();
            while (keyboard_events.hasRemaining()) {
                  RawKeyboardEvent event = (RawKeyboardEvent)keyboard_events.get();
                  boolean has_update = processKeyboardEvent(event);
                  if (has_update && processed_keyboard_events.hasRemaining()) {
                        RawKeyboardEvent processed_event = (RawKeyboardEvent)processed_keyboard_events.get();
                        processed_event.set(event);
                  }
            }
            keyboard_events.compact();
      }

      private final boolean updateButtonState(int button_id, int button_flags, int down_flag, int up_flag) {
            if (button_id >= button_states.length)
                  return false;
            if ((button_flags & down_flag) != 0) {
                  button_states[button_id] = true;
                  return true;
            } else if ((button_flags & up_flag) != 0) {
                  button_states[button_id] = false;
                  return true;
            } else
                  return false;
      }
      
      private final boolean processKeyboardEvent(RawKeyboardEvent event) {
            int message = event.getMessage();
            int vkey = event.getVKey();
            if (vkey >= key_states.length)
                  return false;
            if (message == WM_KEYDOWN || message == WM_SYSKEYDOWN) {
                  key_states[vkey] = true;
                  return true;
            } else if (message == WM_KEYUP || message == WM_SYSKEYUP) {
                  key_states[vkey] = false;
                  return true;
            } else
                  return false;
      }

      public final boolean isKeyDown(int vkey) {
            return key_states[vkey];
      }

      private final boolean processMouseEvent(RawMouseEvent event) {
            boolean has_update = false;
            int button_flags = event.getButtonFlags();
            has_update = updateButtonState(0, button_flags, RI_MOUSE_BUTTON_1_DOWN, RI_MOUSE_BUTTON_1_UP) || has_update;
            has_update = updateButtonState(1, button_flags, RI_MOUSE_BUTTON_2_DOWN, RI_MOUSE_BUTTON_2_UP) || has_update;
            has_update = updateButtonState(2, button_flags, RI_MOUSE_BUTTON_3_DOWN, RI_MOUSE_BUTTON_3_UP) || has_update;
            has_update = updateButtonState(3, button_flags, RI_MOUSE_BUTTON_4_DOWN, RI_MOUSE_BUTTON_4_UP) || has_update;
            has_update = updateButtonState(4, button_flags, RI_MOUSE_BUTTON_5_DOWN, RI_MOUSE_BUTTON_5_UP) || has_update;
            int dx;
            int dy;
            if ((event.getFlags() & MOUSE_MOVE_ABSOLUTE) != 0) {
                  dx = event.getLastX() - last_x;
                  dy = event.getLastY() - last_y;
                  last_x = event.getLastX();
                  last_y = event.getLastY();
            } else {
                  dx = event.getLastX();
                  dy = event.getLastY();
            }
            int dwheel = 0;
            if ((button_flags & RI_MOUSE_WHEEL) != 0)
                  dwheel = event.getWheelDelta();
            relative_x += dx;
            relative_y += dy;
            wheel += dwheel;
            has_update = dx != 0 || dy != 0 || dwheel != 0 || has_update;
            return has_update;
      }

      public final int getWheel() {
            return wheel;
      }

      public final int getEventRelativeX() {
            return event_relative_x;
      }
      
      public final int getEventRelativeY() {
            return event_relative_y;
      }
      
      public final int getRelativeX() {
            return relative_x;
      }
      
      public final int getRelativeY() {
            return relative_y;
      }
      
      public final synchronized boolean getNextKeyboardEvent(RawKeyboardEvent event) {
            processed_keyboard_events.flip();
            if (!processed_keyboard_events.hasRemaining()) {
                  processed_keyboard_events.compact();
                  return false;
            }
            RawKeyboardEvent next_event = (RawKeyboardEvent)processed_keyboard_events.get();
            event.set(next_event);
            processed_keyboard_events.compact();
            return true;
      }

      public final synchronized boolean getNextMouseEvent(RawMouseEvent event) {
            processed_mouse_events.flip();
            if (!processed_mouse_events.hasRemaining()) {
                  processed_mouse_events.compact();
                  return false;
            }
            RawMouseEvent next_event = (RawMouseEvent)processed_mouse_events.get();
            if ((next_event.getFlags() & MOUSE_MOVE_ABSOLUTE) != 0) {
                  event_relative_x = next_event.getLastX() - event_last_x;
                  event_relative_y = next_event.getLastY() - event_last_y;
                  event_last_x = next_event.getLastX();
                  event_last_y = next_event.getLastY();
            } else {
                  event_relative_x = next_event.getLastX();
                  event_relative_y = next_event.getLastY();
            }
            event.set(next_event);
            processed_mouse_events.compact();
            return true;
      }
      
      public final boolean getButtonState(int button_id) {
            if (button_id >= button_states.length)
                  return false;
            return button_states[button_id];
      }

      public final void setBufferSize(int size) {
            keyboard_events = new DataQueue(size, RawKeyboardEvent.class);
            mouse_events = new DataQueue(size, RawMouseEvent.class);
            processed_keyboard_events = new DataQueue(size, RawKeyboardEvent.class);
            processed_mouse_events = new DataQueue(size, RawMouseEvent.class);
      }

      public final int getType() {
            return type;
      }

      public final long getHandle() {
            return handle;
      }

      public final String getName() throws IOException {
            return nGetName(handle);
      }
      private final static native String nGetName(long handle) throws IOException;

      public final RawDeviceInfo getInfo() throws IOException {
            return nGetInfo(this, handle);
      }
      private final static native RawDeviceInfo nGetInfo(RawDevice device, long handle) throws IOException;
}

Generated by  Doxygen 1.6.0   Back to index