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 private int lastKeyPressCode = KeyEvent.VK_UNDEFINED;
45
46 CPlatformResponder(final LWWindowPeer peer, final boolean isNpapiCallback) {
47 this.peer = peer;
48 this.isNpapiCallback = isNpapiCallback;
49 }
50
51 /**
52 * Handles mouse events.
53 */
54 void handleMouseEvent(int eventType, int modifierFlags, int buttonNumber,
55 int clickCount, int x, int y, int absoluteX,
56 int absoluteY) {
57 final SunToolkit tk = (SunToolkit)Toolkit.getDefaultToolkit();
58 if ((buttonNumber > 2 && !tk.areExtraMouseButtonsEnabled())
59 || buttonNumber > tk.getNumberOfButtons() - 1) {
60 return;
61 }
62
63 int jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
64 NSEvent.nsToJavaEventType(eventType);
65
66 int jbuttonNumber = MouseEvent.NOBUTTON;
67 int jclickCount = 0;
68
69 if (jeventType != MouseEvent.MOUSE_MOVED &&
70 jeventType != MouseEvent.MOUSE_ENTERED &&
71 jeventType != MouseEvent.MOUSE_EXITED)
72 {
73 jbuttonNumber = NSEvent.nsToJavaButton(buttonNumber);
74 jclickCount = clickCount;
75 }
76
77 int jmodifiers = NSEvent.nsToJavaMouseModifiers(buttonNumber,
78 modifierFlags);
79 boolean jpopupTrigger = NSEvent.isPopupTrigger(jmodifiers);
80
81 peer.dispatchMouseEvent(jeventType, System.currentTimeMillis(), jbuttonNumber,
82 x, y, absoluteX, absoluteY, jmodifiers, jclickCount,
83 jpopupTrigger, null);
84 }
85
86 /**
87 * Handles scroll events.
88 */
89 void handleScrollEvent(final int x, final int y, final int modifierFlags,
90 final double deltaX, final double deltaY) {
91 final int buttonNumber = CocoaConstants.kCGMouseButtonCenter;
92 int jmodifiers = NSEvent.nsToJavaMouseModifiers(buttonNumber,
93 modifierFlags);
94 final boolean isShift = (jmodifiers & InputEvent.SHIFT_DOWN_MASK) != 0;
95
96 // Vertical scroll.
97 if (!isShift && deltaY != 0.0) {
98 dispatchScrollEvent(x, y, jmodifiers, deltaY);
99 }
100 // Horizontal scroll or shirt+vertical scroll.
101 final double delta = isShift && deltaY != 0.0 ? deltaY : deltaX;
102 if (delta != 0.0) {
103 jmodifiers |= InputEvent.SHIFT_DOWN_MASK;
104 dispatchScrollEvent(x, y, jmodifiers, delta);
105 }
106 }
107
108 private void dispatchScrollEvent(final int x, final int y,
109 final int modifiers, final double delta) {
110 final long when = System.currentTimeMillis();
111 final int scrollType = MouseWheelEvent.WHEEL_UNIT_SCROLL;
112 final int scrollAmount = 1;
113 int wheelRotation = (int) delta;
114 int signum = (int) Math.signum(delta);
115 if (signum * delta < 1) {
116 wheelRotation = signum;
117 }
118 // invert the wheelRotation for the peer
119 peer.dispatchMouseWheelEvent(when, x, y, modifiers, scrollType,
120 scrollAmount, -wheelRotation, -delta, null);
121 }
122
123 /**
124 * Handles key events.
125 */
126 void handleKeyEvent(int eventType, int modifierFlags, String chars,
127 short keyCode, boolean needsKeyTyped) {
128 boolean isFlagsChangedEvent =
129 isNpapiCallback ? (eventType == CocoaConstants.NPCocoaEventFlagsChanged) :
130 (eventType == CocoaConstants.NSFlagsChanged);
131
132 int jeventType = KeyEvent.KEY_PRESSED;
133 int jkeyCode = KeyEvent.VK_UNDEFINED;
134 int jkeyLocation = KeyEvent.KEY_LOCATION_UNKNOWN;
135 boolean postsTyped = false;
136
137 char testChar = KeyEvent.CHAR_UNDEFINED;
138 boolean isDeadChar = (chars!= null && chars.length() == 0);
139
140 if (isFlagsChangedEvent) {
141 int[] in = new int[] {modifierFlags, keyCode};
142 int[] out = new int[3]; // [jkeyCode, jkeyLocation, jkeyType]
143
144 NSEvent.nsKeyModifiersToJavaKeyInfo(in, out);
145
146 jkeyCode = out[0];
147 jkeyLocation = out[1];
148 jeventType = out[2];
149 } else {
150 if (chars != null && chars.length() > 0) {
151 testChar = chars.charAt(0);
152 }
153
154 int[] in = new int[] {testChar, isDeadChar ? 1 : 0, modifierFlags, keyCode};
155 int[] out = new int[3]; // [jkeyCode, jkeyLocation, deadChar]
156
157 postsTyped = NSEvent.nsToJavaKeyInfo(in, out);
158 if (!postsTyped) {
159 testChar = KeyEvent.CHAR_UNDEFINED;
160 }
161
162 if(isDeadChar){
163 testChar = (char) out[2];
164 if(testChar == 0){
165 return;
166 }
167 }
168
169 jkeyCode = out[0];
170 jkeyLocation = out[1];
171 jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
172 NSEvent.nsToJavaEventType(eventType);
173 }
174
175 char javaChar = NSEvent.nsToJavaChar(testChar, modifierFlags);
176 // Some keys may generate a KEY_TYPED, but we can't determine
177 // what that character is. That's likely a bug, but for now we
178 // just check for CHAR_UNDEFINED.
179 if (javaChar == KeyEvent.CHAR_UNDEFINED) {
180 postsTyped = false;
181 }
182
183
184 int jmodifiers = NSEvent.nsToJavaKeyModifiers(modifierFlags);
185 long when = System.currentTimeMillis();
186
187 if (jeventType == KeyEvent.KEY_PRESSED) {
188 lastKeyPressCode = jkeyCode;
189 }
190 peer.dispatchKeyEvent(jeventType, when, jmodifiers,
191 jkeyCode, javaChar, jkeyLocation);
192
193 // Current browser may be sending input events, so don't
194 // post the KEY_TYPED here.
195 postsTyped &= needsKeyTyped;
196
197 // That's the reaction on the PRESSED (not RELEASED) event as it comes to
198 // appear in MacOSX.
199 // Modifier keys (shift, etc) don't want to send TYPED events.
200 // On the other hand we don't want to generate keyTyped events
201 // for clipboard related shortcuts like Meta + [CVX]
202 boolean isMetaDown = (jmodifiers & KeyEvent.META_DOWN_MASK) != 0;
203 if (jeventType == KeyEvent.KEY_PRESSED && postsTyped && !isMetaDown) {
204 peer.dispatchKeyEvent(KeyEvent.KEY_TYPED, when, jmodifiers,
205 KeyEvent.VK_UNDEFINED, javaChar,
206 KeyEvent.KEY_LOCATION_UNKNOWN);
207 }
208 }
209
210 void handleInputEvent(String text) {
211 if (text != null) {
212 int index = 0, length = text.length();
213 char c;
214 while (index < length) {
215 c = text.charAt(index);
216 peer.dispatchKeyEvent(KeyEvent.KEY_TYPED,
217 System.currentTimeMillis(),
218 0, KeyEvent.VK_UNDEFINED, c,
219 KeyEvent.KEY_LOCATION_UNKNOWN);
220 peer.dispatchKeyEvent(KeyEvent.KEY_RELEASED,
221 System.currentTimeMillis(),
222 0, lastKeyPressCode, c,
223 KeyEvent.KEY_LOCATION_UNKNOWN);
224 index++;
225 }
226 }
227 }
228
229 void handleWindowFocusEvent(boolean gained, LWWindowPeer opposite) {
230 peer.notifyActivation(gained, opposite);
231 }
232 }