1 /*
2 * Copyright (c) 2011, 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 sun.awt.SunToolkit;
29 import sun.lwawt.LWWindowPeer;
30 import sun.lwawt.macosx.event.NSEvent;
31 import java.awt.Toolkit;
32 import java.awt.event.MouseEvent;
33 import java.awt.event.InputEvent;
34 import java.awt.event.MouseWheelEvent;
35 import java.awt.event.KeyEvent;
36
37 /**
38 * Translates NSEvents/NPCocoaEvents into AWT events.
39 */
40 final class CPlatformResponder {
41
42 private final LWWindowPeer peer;
43 private final boolean isNpapiCallback;
44
45 CPlatformResponder(final LWWindowPeer peer, final boolean isNpapiCallback) {
46 this.peer = peer;
47 this.isNpapiCallback = isNpapiCallback;
48 }
49
50 /**
51 * Handles mouse events.
52 */
53 void handleMouseEvent(int eventType, int modifierFlags, int buttonNumber,
54 int clickCount, int x, int y, int absoluteX,
55 int absoluteY) {
56 final SunToolkit tk = (SunToolkit)Toolkit.getDefaultToolkit();
57 if ((buttonNumber > 2 && !tk.areExtraMouseButtonsEnabled())
58 || buttonNumber > tk.getNumberOfButtons() - 1) {
59 return;
60 }
61
62 int jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
63 NSEvent.nsToJavaEventType(eventType);
64
65 int jbuttonNumber = MouseEvent.NOBUTTON;
66 int jclickCount = 0;
67
68 if (jeventType != MouseEvent.MOUSE_MOVED &&
69 jeventType != MouseEvent.MOUSE_ENTERED &&
70 jeventType != MouseEvent.MOUSE_EXITED)
71 {
72 jbuttonNumber = NSEvent.nsToJavaButton(buttonNumber);
73 jclickCount = clickCount;
74 }
75
76 int jmodifiers = NSEvent.nsToJavaMouseModifiers(buttonNumber,
77 modifierFlags);
78 boolean jpopupTrigger = NSEvent.isPopupTrigger(jmodifiers);
79
80 peer.dispatchMouseEvent(jeventType, System.currentTimeMillis(), jbuttonNumber,
81 x, y, absoluteX, absoluteY, jmodifiers, jclickCount,
82 jpopupTrigger, null);
83 }
84
85 /**
86 * Handles scroll events.
87 */
88 void handleScrollEvent(final int x, final int y, final int modifierFlags,
89 final double deltaX, final double deltaY) {
90 final int buttonNumber = CocoaConstants.kCGMouseButtonCenter;
91 int jmodifiers = NSEvent.nsToJavaMouseModifiers(buttonNumber,
92 modifierFlags);
93 final boolean isShift = (jmodifiers & InputEvent.SHIFT_DOWN_MASK) != 0;
94
95 // Vertical scroll.
96 if (!isShift && deltaY != 0.0) {
97 dispatchScrollEvent(x, y, jmodifiers, deltaY);
98 }
99 // Horizontal scroll or shirt+vertical scroll.
100 final double delta = isShift && deltaY != 0.0 ? deltaY : deltaX;
101 if (delta != 0.0) {
102 jmodifiers |= InputEvent.SHIFT_DOWN_MASK;
103 dispatchScrollEvent(x, y, jmodifiers, delta);
104 }
105 }
106
107 private void dispatchScrollEvent(final int x, final int y,
108 final int modifiers, final double delta) {
109 final long when = System.currentTimeMillis();
110 final int scrollType = MouseWheelEvent.WHEEL_UNIT_SCROLL;
111 final int scrollAmount = 1;
112 int wheelRotation = (int) delta;
113 int signum = (int) Math.signum(delta);
114 if (signum * delta < 1) {
115 wheelRotation = signum;
116 }
117 // invert the wheelRotation for the peer
118 peer.dispatchMouseWheelEvent(when, x, y, modifiers, scrollType,
119 scrollAmount, -wheelRotation, -delta, null);
120 }
121
122 /**
123 * Handles key events.
124 */
125 void handleKeyEvent(int eventType, int modifierFlags, String chars,
126 short keyCode, boolean needsKeyTyped) {
127 boolean isFlagsChangedEvent =
128 isNpapiCallback ? (eventType == CocoaConstants.NPCocoaEventFlagsChanged) :
129 (eventType == CocoaConstants.NSFlagsChanged);
130
131 int jeventType = KeyEvent.KEY_PRESSED;
132 int jkeyCode = KeyEvent.VK_UNDEFINED;
133 int jkeyLocation = KeyEvent.KEY_LOCATION_UNKNOWN;
134 boolean postsTyped = false;
135
136 char testChar = KeyEvent.CHAR_UNDEFINED;
137 boolean isDeadChar = (chars!= null && chars.length() == 0);
138
139 if (isFlagsChangedEvent) {
140 int[] in = new int[] {modifierFlags, keyCode};
141 int[] out = new int[3]; // [jkeyCode, jkeyLocation, jkeyType]
142
143 NSEvent.nsKeyModifiersToJavaKeyInfo(in, out);
144
145 jkeyCode = out[0];
146 jkeyLocation = out[1];
147 jeventType = out[2];
148 } else {
149 if (chars != null && chars.length() > 0) {
150 testChar = chars.charAt(0);
151 }
152
153 int[] in = new int[] {testChar, isDeadChar ? 1 : 0, modifierFlags, keyCode};
154 int[] out = new int[3]; // [jkeyCode, jkeyLocation, deadChar]
155
156 postsTyped = NSEvent.nsToJavaKeyInfo(in, out);
157 if (!postsTyped) {
158 testChar = KeyEvent.CHAR_UNDEFINED;
159 }
160
161 if(isDeadChar){
162 testChar = (char) out[2];
163 if(testChar == 0){
164 return;
165 }
166 }
167
168 jkeyCode = out[0];
169 jkeyLocation = out[1];
170 jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
171 NSEvent.nsToJavaEventType(eventType);
172 }
173
174 char javaChar = NSEvent.nsToJavaChar(testChar, modifierFlags);
175 // Some keys may generate a KEY_TYPED, but we can't determine
176 // what that character is. That's likely a bug, but for now we
177 // just check for CHAR_UNDEFINED.
178 if (javaChar == KeyEvent.CHAR_UNDEFINED) {
179 postsTyped = false;
180 }
181
182
183 int jmodifiers = NSEvent.nsToJavaKeyModifiers(modifierFlags);
184 long when = System.currentTimeMillis();
185
186 peer.dispatchKeyEvent(jeventType, when, jmodifiers,
187 jkeyCode, javaChar, jkeyLocation);
188
189 // Current browser may be sending input events, so don't
190 // post the KEY_TYPED here.
191 postsTyped &= needsKeyTyped;
192
193 // That's the reaction on the PRESSED (not RELEASED) event as it comes to
194 // appear in MacOSX.
195 // Modifier keys (shift, etc) don't want to send TYPED events.
196 // On the other hand we don't want to generate keyTyped events
197 // for clipboard related shortcuts like Meta + [CVX]
198 boolean isMetaDown = (jmodifiers & KeyEvent.META_DOWN_MASK) != 0;
199 if (jeventType == KeyEvent.KEY_PRESSED && postsTyped && !isMetaDown) {
200 peer.dispatchKeyEvent(KeyEvent.KEY_TYPED, when, jmodifiers,
201 KeyEvent.VK_UNDEFINED, javaChar,
202 KeyEvent.KEY_LOCATION_UNKNOWN);
203 }
204 }
205
206 void handleInputEvent(String text) {
207 if (text != null) {
208 int index = 0, length = text.length();
209 char c;
210 while (index < length) {
211 c = text.charAt(index);
212 peer.dispatchKeyEvent(KeyEvent.KEY_TYPED,
213 System.currentTimeMillis(),
214 0, KeyEvent.VK_UNDEFINED, c,
215 KeyEvent.KEY_LOCATION_UNKNOWN);
216 index++;
217 }
218 }
219 }
220
221 void handleWindowFocusEvent(boolean gained) {
222 peer.notifyActivation(gained);
223 }
224 }