1 /*
2 * Copyright (c) 2012, 2014, 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 com.sun.glass.ui.lens;
27
28 import com.sun.glass.events.TouchEvent;
29 import com.sun.glass.events.MouseEvent;
30 import com.sun.glass.events.KeyEvent;
31 import com.sun.glass.ui.TouchInputSupport;
32 import com.sun.glass.ui.GestureSupport;
33 import com.sun.glass.ui.Application;
34 import com.sun.glass.ui.View;
35
36 import java.lang.Integer;
37 import java.security.AccessController;
38 import java.security.PrivilegedAction;
39
40
41 final class LensTouchInputSupport {
42
43 /**
44 * This property define the size of the tap radius which can be seen as the
45 * 'finger size'. After the first tap, a touch point will be considered
46 * STILL as long as the point coordinates are within the tap radius. When the
47 * point coordinates move outside the tap radius the point will be considered
48 * as 'dragging' and all move events will be reported as long as they are
49 * greater then the touchMoveSensitivity property
50 * Property is used by Lens native input driver
51 *
52 */
53 static final int touchTapRadius;
54 /**
55 * This property determine the sensitivity of move events from touch. The
56 * bigger the value the less sensitive is the touch screen. In practice move
57 * events with a delta smaller then the value of this property will be
58 * filtered out.The value of the property is in pixels.
59 * Property is used by Lens native input driver
60 */
61 private static final int touchMoveSensitivity;
62
63 /**
64 * This property enables or disables input device pruning. When input
65 * device pruning is enabled, only the first device input node of a
66 * device is captured. So if an input device driver registers nodes
67 * /dev/input/event2 and /dev/input/event3 for the same devices, only
68 * the first node reported by udev is used.
69 * Input device pruning is off by default.
70 */
71 private static final boolean pruneInputDevices;
72
73 /**
74 * This property enable/disable multi touch support by the input driver.
75 * When the property is disabled and a multitouch screen is connected, the
76 * input driver will 'downgrade' the screen events to a single touch
77 * point, as if a single touch screen was connected
78 *
79 */
80 private static final boolean useMultiTouch;
81
82 /**
83 * This property is used for printing raw events, device properties, device
84 * attach / detach, low level Lens input driver decisions etc. Useful for
85 * debugging a new input device that is not recognized or behave wrongly by
86 * the Lens input driver. Property is disabled by default
87 */
88 private static final boolean enableDeviceTrace;
89
90 static {
91 touchTapRadius = AccessController.doPrivileged(
92 (PrivilegedAction<Integer>) () -> Integer.getInteger("lens.input.touch.TapRadius", 20));
93
94 touchMoveSensitivity = AccessController.doPrivileged(
95 (PrivilegedAction<Integer>) () -> Integer.getInteger("lens.input.touch.MoveSensitivity", 20));
96
97 pruneInputDevices = AccessController.doPrivileged(
98 (PrivilegedAction<Boolean>) () -> Boolean.getBoolean("lens.input.pruneDevices"));
99
100 useMultiTouch = AccessController.doPrivileged(
101 (PrivilegedAction<Boolean>) () -> !(Boolean.getBoolean("lens.input.forceSingleTouch")));
102
103 enableDeviceTrace = AccessController.doPrivileged(
104 (PrivilegedAction<Boolean>) () -> Boolean.getBoolean("lens.input.trace"));
105
106 }
107
108
109 private final static GestureSupport gestures = new GestureSupport(false);
110 private final static TouchInputSupport touches =
111 new TouchInputSupport(gestures.createTouchCountListener(), false);
112
113 static void postTouchEvent(LensView view, int state, long id,
114 int x, int y, int absX, int absY) {
115 touches.notifyBeginTouchEvent(view, 0, true, 1);
116 touches.notifyNextTouchEvent(view, state, id, x, y, absX, absY);
117 touches.notifyEndTouchEvent(view);
118 }
119
120 static void postMultiTouchEvent(LensView view, int[] states, long[] ids,
121 int[] xs, int[] ys, int dx, int dy) {
122 touches.notifyBeginTouchEvent(view, 0, true, states.length);
123 for (int i = 0; i < states.length; i++) {
124 touches.notifyNextTouchEvent(view, states[i], ids[i],
125 xs[i] + dx, ys[i] + dy,
126 xs[i], ys[i]);
127 }
128 touches.notifyEndTouchEvent(view);
129 }
130 }
131