1 /*
2 * Copyright (c) 2011, 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 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 import java.util.Locale;
38
39 /**
40 * Translates NSEvents/NPCocoaEvents into AWT events.
41 */
42 final class CPlatformResponder {
43
44 private final PlatformEventNotifier eventNotifier;
45 private final boolean isNpapiCallback;
46 private int lastKeyPressCode = KeyEvent.VK_UNDEFINED;
47
48 CPlatformResponder(final PlatformEventNotifier eventNotifier,
49 final boolean isNpapiCallback) {
50 this.eventNotifier = eventNotifier;
51 this.isNpapiCallback = isNpapiCallback;
52 }
53
54 /**
55 * Handles mouse events.
56 */
57 void handleMouseEvent(int eventType, int modifierFlags, int buttonNumber,
58 int clickCount, int x, int y, int absoluteX,
59 int absoluteY) {
60 final SunToolkit tk = (SunToolkit)Toolkit.getDefaultToolkit();
61 if ((buttonNumber > 2 && !tk.areExtraMouseButtonsEnabled())
62 || buttonNumber > tk.getNumberOfButtons() - 1) {
63 return;
64 }
65
66 int jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
67 NSEvent.nsToJavaEventType(eventType);
68
69 int jbuttonNumber = MouseEvent.NOBUTTON;
70 int jclickCount = 0;
71
72 if (jeventType != MouseEvent.MOUSE_MOVED &&
73 jeventType != MouseEvent.MOUSE_ENTERED &&
74 jeventType != MouseEvent.MOUSE_EXITED)
75 {
76 jbuttonNumber = NSEvent.nsToJavaButton(buttonNumber);
77 jclickCount = clickCount;
78 }
79
80 int jmodifiers = NSEvent.nsToJavaMouseModifiers(buttonNumber,
81 modifierFlags);
82 boolean jpopupTrigger = NSEvent.isPopupTrigger(jmodifiers);
83
84 eventNotifier.notifyMouseEvent(jeventType, System.currentTimeMillis(), jbuttonNumber,
85 x, y, absoluteX, absoluteY, jmodifiers, jclickCount,
86 jpopupTrigger, null);
87 }
88
89 /**
90 * Handles scroll events.
91 */
92 void handleScrollEvent(final int x, final int y, final int modifierFlags,
93 final double deltaX, final double deltaY) {
94 final int buttonNumber = CocoaConstants.kCGMouseButtonCenter;
95 int jmodifiers = NSEvent.nsToJavaMouseModifiers(buttonNumber,
96 modifierFlags);
97 final boolean isShift = (jmodifiers & InputEvent.SHIFT_DOWN_MASK) != 0;
98
99 // Vertical scroll.
100 if (!isShift && deltaY != 0.0) {
101 dispatchScrollEvent(x, y, jmodifiers, deltaY);
102 }
103 // Horizontal scroll or shirt+vertical scroll.
104 final double delta = isShift && deltaY != 0.0 ? deltaY : deltaX;
105 if (delta != 0.0) {
106 jmodifiers |= InputEvent.SHIFT_DOWN_MASK;
107 dispatchScrollEvent(x, y, jmodifiers, delta);
108 }
109 }
110
111 private void dispatchScrollEvent(final int x, final int y,
112 final int modifiers, final double delta) {
113 final long when = System.currentTimeMillis();
114 final int scrollType = MouseWheelEvent.WHEEL_UNIT_SCROLL;
115 final int scrollAmount = 1;
116 int wheelRotation = (int) delta;
117 int signum = (int) Math.signum(delta);
118 if (signum * delta < 1) {
119 wheelRotation = signum;
120 }
121 // invert the wheelRotation for the peer
122 eventNotifier.notifyMouseWheelEvent(when, x, y, modifiers, scrollType,
123 scrollAmount, -wheelRotation, -delta, null);
124 }
125
126 /**
127 * Handles key events.
128 */
129 void handleKeyEvent(int eventType, int modifierFlags, String chars, String charsIgnoringModifiers,
130 short keyCode, boolean needsKeyTyped, boolean needsKeyReleased) {
131 boolean isFlagsChangedEvent =
132 isNpapiCallback ? (eventType == CocoaConstants.NPCocoaEventFlagsChanged) :
133 (eventType == CocoaConstants.NSFlagsChanged);
134
135 int jeventType = KeyEvent.KEY_PRESSED;
136 int jkeyCode = KeyEvent.VK_UNDEFINED;
137 int jkeyLocation = KeyEvent.KEY_LOCATION_UNKNOWN;
138 boolean postsTyped = false;
139
140 char testChar = KeyEvent.CHAR_UNDEFINED;
141 boolean isDeadChar = (chars!= null && chars.length() == 0);
142
143 if (isFlagsChangedEvent) {
144 int[] in = new int[] {modifierFlags, keyCode};
145 int[] out = new int[3]; // [jkeyCode, jkeyLocation, jkeyType]
146
147 NSEvent.nsKeyModifiersToJavaKeyInfo(in, out);
148
149 jkeyCode = out[0];
150 jkeyLocation = out[1];
151 jeventType = out[2];
152 } else {
153 if (chars != null && chars.length() > 0) {
154 testChar = chars.charAt(0);
155 }
156
157 char testCharIgnoringModifiers = charsIgnoringModifiers != null && charsIgnoringModifiers.length() > 0 ?
158 charsIgnoringModifiers.charAt(0) : KeyEvent.CHAR_UNDEFINED;
159
160 int[] in = new int[] {testCharIgnoringModifiers, isDeadChar ? 1 : 0, modifierFlags, keyCode};
161 int[] out = new int[3]; // [jkeyCode, jkeyLocation, deadChar]
162
163 postsTyped = NSEvent.nsToJavaKeyInfo(in, out);
164 if (!postsTyped) {
165 testChar = KeyEvent.CHAR_UNDEFINED;
166 }
167
168 if(isDeadChar){
169 testChar = (char) out[2];
170 if(testChar == 0){
171 return;
172 }
173 }
174
175 // If Pinyin Simplified input method is selected, CAPS_LOCK key is supposed to switch
176 // input to latin letters.
177 // It is necessary to use testCharIgnoringModifiers instead of testChar for event
178 // generation in such case to avoid uppercase letters in text components.
179 LWCToolkit lwcToolkit = (LWCToolkit)Toolkit.getDefaultToolkit();
180 if (lwcToolkit.getLockingKeyState(KeyEvent.VK_CAPS_LOCK) &&
181 Locale.SIMPLIFIED_CHINESE.equals(lwcToolkit.getDefaultKeyboardLocale())) {
182 testChar = testCharIgnoringModifiers;
183 }
184
185 jkeyCode = out[0];
186 jkeyLocation = out[1];
187 jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
188 NSEvent.nsToJavaEventType(eventType);
189 }
190
191 char javaChar = NSEvent.nsToJavaChar(testChar, modifierFlags);
192 // Some keys may generate a KEY_TYPED, but we can't determine
193 // what that character is. That's likely a bug, but for now we
194 // just check for CHAR_UNDEFINED.
195 if (javaChar == KeyEvent.CHAR_UNDEFINED) {
196 postsTyped = false;
197 }
198
199
200 int jmodifiers = NSEvent.nsToJavaKeyModifiers(modifierFlags);
201 long when = System.currentTimeMillis();
202
203 if (jeventType == KeyEvent.KEY_PRESSED) {
204 lastKeyPressCode = jkeyCode;
205 }
206 eventNotifier.notifyKeyEvent(jeventType, when, jmodifiers,
207 jkeyCode, javaChar, jkeyLocation);
208
209 // Current browser may be sending input events, so don't
210 // post the KEY_TYPED here.
211 postsTyped &= needsKeyTyped;
212
213 // That's the reaction on the PRESSED (not RELEASED) event as it comes to
214 // appear in MacOSX.
215 // Modifier keys (shift, etc) don't want to send TYPED events.
216 // On the other hand we don't want to generate keyTyped events
217 // for clipboard related shortcuts like Meta + [CVX]
218 if (jeventType == KeyEvent.KEY_PRESSED && postsTyped &&
219 (jmodifiers & KeyEvent.META_DOWN_MASK) == 0) {
220 // Enter and Space keys finish the input method processing,
221 // KEY_TYPED and KEY_RELEASED events for them are synthesized in handleInputEvent.
222 if (needsKeyReleased && (jkeyCode == KeyEvent.VK_ENTER || jkeyCode == KeyEvent.VK_SPACE)) {
223 return;
224 }
225 eventNotifier.notifyKeyEvent(KeyEvent.KEY_TYPED, when, jmodifiers,
226 KeyEvent.VK_UNDEFINED, javaChar,
227 KeyEvent.KEY_LOCATION_UNKNOWN);
228 //If events come from Firefox, released events should also be generated.
229 if (needsKeyReleased) {
230 eventNotifier.notifyKeyEvent(KeyEvent.KEY_RELEASED, when, jmodifiers,
231 jkeyCode, javaChar,
232 KeyEvent.KEY_LOCATION_UNKNOWN);
233 }
234 }
235 }
236
237 void handleInputEvent(String text) {
238 if (text != null) {
239 int index = 0, length = text.length();
240 char c = 0;
241 while (index < length) {
242 c = text.charAt(index);
243 eventNotifier.notifyKeyEvent(KeyEvent.KEY_TYPED,
244 System.currentTimeMillis(),
245 0, KeyEvent.VK_UNDEFINED, c,
246 KeyEvent.KEY_LOCATION_UNKNOWN);
247 index++;
248 }
249 eventNotifier.notifyKeyEvent(KeyEvent.KEY_RELEASED,
250 System.currentTimeMillis(),
251 0, lastKeyPressCode, c,
252 KeyEvent.KEY_LOCATION_UNKNOWN);
253 }
254 }
255
256 void handleWindowFocusEvent(boolean gained, LWWindowPeer opposite) {
257 eventNotifier.notifyActivation(gained, opposite);
258 }
259 }