1 /*
2 * Copyright (c) 2011, 2015, 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.PlatformEventNotifier;
31
32 import java.awt.Toolkit;
33 import java.awt.event.MouseEvent;
34 import java.awt.event.InputEvent;
35 import java.awt.event.MouseWheelEvent;
36 import java.awt.event.KeyEvent;
37
38 /**
39 * Translates NSEvents/NPCocoaEvents into AWT events.
40 */
41 final class CPlatformResponder {
42
43 private final PlatformEventNotifier eventNotifier;
44 private final boolean isNpapiCallback;
45 private int lastKeyPressCode = KeyEvent.VK_UNDEFINED;
46
47 CPlatformResponder(final PlatformEventNotifier eventNotifier,
48 final boolean isNpapiCallback) {
49 this.eventNotifier = eventNotifier;
50 this.isNpapiCallback = isNpapiCallback;
51 }
52
53 /**
54 * Handles mouse events.
55 */
56 void handleMouseEvent(int eventType, int modifierFlags, int buttonNumber,
57 int clickCount, int x, int y, int absX, int absY) {
58 final SunToolkit tk = (SunToolkit)Toolkit.getDefaultToolkit();
59 if ((buttonNumber > 2 && !tk.areExtraMouseButtonsEnabled())
60 || buttonNumber > tk.getNumberOfButtons() - 1) {
61 return;
62 }
63
64 int jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
65 NSEvent.nsToJavaEventType(eventType);
66
67 int jbuttonNumber = MouseEvent.NOBUTTON;
68 int jclickCount = 0;
69
70 if (jeventType != MouseEvent.MOUSE_MOVED &&
71 jeventType != MouseEvent.MOUSE_ENTERED &&
72 jeventType != MouseEvent.MOUSE_EXITED)
73 {
74 jbuttonNumber = NSEvent.nsToJavaButton(buttonNumber);
75 jclickCount = clickCount;
76 }
77
78 int jmodifiers = NSEvent.nsToJavaModifiers(modifierFlags);
79 boolean jpopupTrigger = NSEvent.isPopupTrigger(jmodifiers);
80
81 eventNotifier.notifyMouseEvent(jeventType, System.currentTimeMillis(), jbuttonNumber,
82 x, y, absX, absY, jmodifiers, jclickCount,
83 jpopupTrigger, null);
84 }
85
86 /**
87 * Handles scroll events.
88 */
89 void handleScrollEvent(final int x, final int y, final int absX,
90 final int absY, final int modifierFlags,
91 final double deltaX, final double deltaY) {
92 int jmodifiers = NSEvent.nsToJavaModifiers(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, absX, absY, 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, absX, absY, jmodifiers, delta);
104 }
105 }
106
107 private void dispatchScrollEvent(final int x, final int y, final int absX,
108 final int absY, final int modifiers,
109 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 eventNotifier.notifyMouseWheelEvent(when, x, y, absX, absY, modifiers,
120 scrollType, scrollAmount,
121 -wheelRotation, -delta, null);
122 }
123
124 /**
125 * Handles key events.
126 */
127 void handleKeyEvent(int eventType, int modifierFlags, String chars, String charsIgnoringModifiers,
128 short keyCode, boolean needsKeyTyped, boolean needsKeyReleased) {
129 boolean isFlagsChangedEvent =
130 isNpapiCallback ? (eventType == CocoaConstants.NPCocoaEventFlagsChanged) :
131 (eventType == CocoaConstants.NSFlagsChanged);
132
133 int jeventType = KeyEvent.KEY_PRESSED;
134 int jkeyCode = KeyEvent.VK_UNDEFINED;
135 int jkeyLocation = KeyEvent.KEY_LOCATION_UNKNOWN;
136 boolean postsTyped = false;
137 boolean spaceKeyTyped = false;
138
139 char testChar = KeyEvent.CHAR_UNDEFINED;
140 boolean isDeadChar = (chars!= null && chars.length() == 0);
141
142 if (isFlagsChangedEvent) {
143 int[] in = new int[] {modifierFlags, keyCode};
144 int[] out = new int[3]; // [jkeyCode, jkeyLocation, jkeyType]
145
146 NSEvent.nsKeyModifiersToJavaKeyInfo(in, out);
147
148 jkeyCode = out[0];
149 jkeyLocation = out[1];
150 jeventType = out[2];
151 } else {
152 if (chars != null && chars.length() > 0) {
153 testChar = chars.charAt(0);
154
155 //Check if String chars contains SPACE character.
156 if (chars.trim().isEmpty()) {
157 spaceKeyTyped = true;
158 }
159 }
160
161 char testCharIgnoringModifiers = charsIgnoringModifiers != null && charsIgnoringModifiers.length() > 0 ?
162 charsIgnoringModifiers.charAt(0) : KeyEvent.CHAR_UNDEFINED;
163
164 int[] in = new int[] {testCharIgnoringModifiers, isDeadChar ? 1 : 0, modifierFlags, keyCode};
165 int[] out = new int[3]; // [jkeyCode, jkeyLocation, deadChar]
166
167 postsTyped = NSEvent.nsToJavaKeyInfo(in, out);
168 if (!postsTyped) {
169 testChar = KeyEvent.CHAR_UNDEFINED;
170 }
171
172 if(isDeadChar){
173 testChar = (char) out[2];
174 if(testChar == 0){
175 return;
176 }
177 }
178
179 jkeyCode = out[0];
180 jkeyLocation = out[1];
181 jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
182 NSEvent.nsToJavaEventType(eventType);
183 }
184
185 char javaChar = NSEvent.nsToJavaChar(testChar, modifierFlags, spaceKeyTyped);
186 // Some keys may generate a KEY_TYPED, but we can't determine
187 // what that character is. That's likely a bug, but for now we
188 // just check for CHAR_UNDEFINED.
189 if (javaChar == KeyEvent.CHAR_UNDEFINED) {
190 postsTyped = false;
191 }
192
193 int jmodifiers = NSEvent.nsToJavaModifiers(modifierFlags);
194 long when = System.currentTimeMillis();
195
196 if (jeventType == KeyEvent.KEY_PRESSED) {
197 lastKeyPressCode = jkeyCode;
198 }
199 eventNotifier.notifyKeyEvent(jeventType, when, jmodifiers,
200 jkeyCode, javaChar, jkeyLocation);
201
202 // Current browser may be sending input events, so don't
203 // post the KEY_TYPED here.
204 postsTyped &= needsKeyTyped;
205
206 // That's the reaction on the PRESSED (not RELEASED) event as it comes to
207 // appear in MacOSX.
208 // Modifier keys (shift, etc) don't want to send TYPED events.
209 // On the other hand we don't want to generate keyTyped events
210 // for clipboard related shortcuts like Meta + [CVX]
211 if (jeventType == KeyEvent.KEY_PRESSED && postsTyped &&
212 (jmodifiers & KeyEvent.META_DOWN_MASK) == 0) {
213 // Enter and Space keys finish the input method processing,
214 // KEY_TYPED and KEY_RELEASED events for them are synthesized in handleInputEvent.
215 if (needsKeyReleased && (jkeyCode == KeyEvent.VK_ENTER || jkeyCode == KeyEvent.VK_SPACE)) {
216 return;
217 }
218 eventNotifier.notifyKeyEvent(KeyEvent.KEY_TYPED, when, jmodifiers,
219 KeyEvent.VK_UNDEFINED, javaChar,
220 KeyEvent.KEY_LOCATION_UNKNOWN);
221 //If events come from Firefox, released events should also be generated.
222 if (needsKeyReleased) {
223 eventNotifier.notifyKeyEvent(KeyEvent.KEY_RELEASED, when, jmodifiers,
224 jkeyCode, javaChar,
225 KeyEvent.KEY_LOCATION_UNKNOWN);
226 }
227 }
228 }
229
230 void handleInputEvent(String text) {
231 if (text != null) {
232 int index = 0, length = text.length();
233 char c = 0;
234 while (index < length) {
235 c = text.charAt(index);
236 eventNotifier.notifyKeyEvent(KeyEvent.KEY_TYPED,
237 System.currentTimeMillis(),
238 0, KeyEvent.VK_UNDEFINED, c,
239 KeyEvent.KEY_LOCATION_UNKNOWN);
240 index++;
241 }
242 eventNotifier.notifyKeyEvent(KeyEvent.KEY_RELEASED,
243 System.currentTimeMillis(),
244 0, lastKeyPressCode, c,
245 KeyEvent.KEY_LOCATION_UNKNOWN);
246 }
247 }
248
249 void handleWindowFocusEvent(boolean gained, LWWindowPeer opposite) {
250 eventNotifier.notifyActivation(gained, opposite);
251 }
252 }