com.sun.glass.ui.monocle.LinuxSimpleTouchProcessor Maven / Gradle / Ivy
/*
* Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.glass.ui.monocle;
class LinuxSimpleTouchProcessor extends LinuxTouchProcessor {
LinuxSimpleTouchProcessor(LinuxInputDevice device) {
super(device);
pipeline.addFilter(new LookaheadTouchFilter(true));
pipeline.addFilter(new AssignPointIDTouchFilter());
}
@Override
public void processEvents(LinuxInputDevice device) {
LinuxEventBuffer buffer = device.getBuffer();
state.clear();
boolean touchReleased = false;
while (buffer.hasNextEvent()) {
switch (buffer.getEventType()) {
case LinuxInput.EV_ABS: {
int value = transform.getValue(buffer);
switch (transform.getAxis(buffer)) {
case LinuxInput.ABS_X:
case LinuxInput.ABS_MT_POSITION_X:
if (state.getPointCount() == 0) {
state.addPoint(null).x = value;
} else {
state.getPoint(0).x = value;
}
break;
case LinuxInput.ABS_Y:
case LinuxInput.ABS_MT_POSITION_Y:
if (state.getPointCount() == 0) {
state.addPoint(null).y = value;
} else {
state.getPoint(0).y = value;
}
break;
}
break;
}
case LinuxInput.EV_KEY:
switch (buffer.getEventCode()) {
case LinuxInput.BTN_TOUCH:
if (buffer.getEventValue() == 0) {
touchReleased = true;
} else if (state.getPointCount() == 0) {
// restore an old point
state.addPoint(null);
}
break;
}
break;
case LinuxInput.EV_SYN:
switch (buffer.getEventCode()) {
case LinuxInput.SYN_REPORT:
if (touchReleased) {
// remove points
state.clear();
touchReleased = false;
}
pipeline.pushState(state);
state.clear();
break;
default: // ignore
}
break;
}
buffer.nextEvent();
}
pipeline.flush();
}
}