/**
* Copyright 2012 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.newt.driver.linux;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import jogamp.newt.WindowImpl;
import jogamp.newt.driver.MouseTracker;
import com.jogamp.common.util.InterruptSource;
import com.jogamp.newt.Screen;
import com.jogamp.newt.Window;
import com.jogamp.newt.event.MouseEvent;
import com.jogamp.newt.event.WindowEvent;
import com.jogamp.newt.event.WindowListener;
import com.jogamp.newt.event.WindowUpdateEvent;
/**
* Experimental native mouse tracker thread for GNU/Linux
* just reading <code>/dev/input/mice</code>
* within it's own polling thread.
*/
public class LinuxMouseTracker implements WindowListener, MouseTracker {
private static final LinuxMouseTracker lmt;
static {
lmt = new LinuxMouseTracker();
final Thread t = new InterruptSource.Thread(null, lmt.mouseDevicePoller, "NEWT-LinuxMouseTracker");
t.setDaemon(true);
t.start();
}
public static LinuxMouseTracker getSingleton() {
return lmt;
}
private volatile boolean stop = false;
private int x = 0;
private int y = 0;
private short buttonDown = 0;
private int old_x = 0;
private int old_y = 0;
private volatile int lastFocusedX = 0;
private volatile int lastFocusedY = 0;
private short old_buttonDown = 0;
private WindowImpl focusedWindow = null;
private final MouseDevicePoller mouseDevicePoller = new MouseDevicePoller();
public final int getLastX() { return lastFocusedX; }
public final int getLastY() { return lastFocusedY; }
@Override
public void windowResized(final WindowEvent e) { }
@Override
public void windowMoved(final WindowEvent e) { }
@Override
public void windowDestroyNotify(final WindowEvent e) {
final Object s = e.getSource();
if(focusedWindow == s) {
focusedWindow = null;
}
}
@Override
public void windowDestroyed(final WindowEvent e) { }
@Override
public void windowGainedFocus(final WindowEvent e) {
final Object s = e.getSource();
if(s instanceof WindowImpl) {
focusedWindow = (WindowImpl) s;
}
}
@Override
public void windowLostFocus(final WindowEvent e) {
final Object s = e.getSource();
if(focusedWindow == s) {
focusedWindow = null;
}
}
@Override
public void windowRepaint(final WindowUpdateEvent e) { }
class MouseDevicePoller implements Runnable {
@Override
public void run() {
final byte[] b = new byte[3];
final File f = new File("/dev/input/mice");
f.setReadOnly();
InputStream fis;
try {
fis = new FileInputStream(f);
} catch (final FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return;
}
int xd=0,yd=0; //x/y movement delta
boolean xo=false,yo=false; // x/y overflow (out of range -255 to +255)
boolean lb=false,mb=false,rb=false,hs=false,vs=false; //left/middle/right mousebutton
while(!stop) {
int remaining=3;
while(remaining>0) {
int read = 0;
try {
read = fis.read(b, 0, remaining);
} catch (final IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(read<0) {
stop = true; // EOF of mouse !?
} else {
remaining -= read;
}
}
lb=(b[0]&1)>0;
rb=(b[0]&2)>0;
mb=(b[0]&4)>0;
hs=(b[0]&16)>0;
vs=(b[0]&32)>0;
xo=(b[0]&64)>0;
yo=(b[0]&128)>0;
xd=b[1];
yd=b[2];
x+=xd;
y-=yd;
if(x<0) {
x=0;
}
if(y<0) {
y=0;
}
buttonDown = 0;
if(lb) {
buttonDown = MouseEvent.BUTTON1;
}
if(mb) {
buttonDown = MouseEvent.BUTTON2;
}
if(rb) {
buttonDown = MouseEvent.BUTTON3;
}
if(null != focusedWindow) {
// Clip to Screen Size
{
final Screen focusedScreen = focusedWindow.getScreen();
final int sw = focusedScreen.getWidth();
final int sh = focusedScreen.getHeight();
if( x >= sw ) {
x = sw - 1;
}
if( y >= sh ) {
y = sh - 1;
}
}
final int[] winScreenPos = focusedWindow.convertToPixelUnits(new int[] { focusedWindow.getX(), focusedWindow.getY() });
final int wx = x - winScreenPos[0], wy = y - winScreenPos[1];
if(old_x != x || old_y != y) {
// mouse moved
lastFocusedX = wx;
lastFocusedY = wy;
focusedWindow.sendMouseEvent(MouseEvent.EVENT_MOUSE_MOVED, 0, wx, wy, (short)0, 0 );
}
if(old_buttonDown != buttonDown) {
// press/release
if( 0 != buttonDown ) {
focusedWindow.sendMouseEvent(MouseEvent.EVENT_MOUSE_PRESSED, 0, wx, wy, buttonDown, 0 );
} else {
focusedWindow.sendMouseEvent(MouseEvent.EVENT_MOUSE_RELEASED, 0, wx, wy, old_buttonDown, 0 );
}
}
} else {
if(Window.DEBUG_MOUSE_EVENT) {
System.out.println(x+"/"+y+", hs="+hs+",vs="+vs+",lb="+lb+",rb="+rb+",mb="+mb+",xo="+xo+",yo="+yo+"xd="+xd+",yd="+yd);
}
}
old_x = x;
old_y = y;
old_buttonDown = buttonDown;
}
if(null != fis) {
try {
fis.close();
} catch (final IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}