1 /*
2 * Copyright (c) 2011, 2016, 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 absX, int absY) {
59 final SunToolkit tk = (SunToolkit)Toolkit.getDefaultToolkit();
60 if ((buttonNumber > 2 && !tk.areExtraMouseButtonsEnabled())
61 || buttonNumber > tk.getNumberOfButtons() - 1) {
62 return;
63 }
64
65 int jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
66 NSEvent.nsToJavaEventType(eventType);
67
68 int jbuttonNumber = MouseEvent.NOBUTTON;
69 int jclickCount = 0;
70
71 if (jeventType != MouseEvent.MOUSE_MOVED &&
72 jeventType != MouseEvent.MOUSE_ENTERED &&
73 jeventType != MouseEvent.MOUSE_EXITED)
74 {
75 jbuttonNumber = NSEvent.nsToJavaButton(buttonNumber);
76 jclickCount = clickCount;
77 }
78
79 int jmodifiers = NSEvent.nsToJavaModifiers(modifierFlags);
80 boolean jpopupTrigger = NSEvent.isPopupTrigger(jmodifiers);
81
82 eventNotifier.notifyMouseEvent(jeventType, System.currentTimeMillis(), jbuttonNumber,
83 x, y, absX, absY, jmodifiers, jclickCount,
84 jpopupTrigger, null);
85 }
86
87 /**
88 * Handles scroll events.
89 */
90 void handleScrollEvent(final int x, final int y, final int absX,
91 final int absY, final int modifierFlags,
92 final double deltaX, final double deltaY) {
93 int jmodifiers = NSEvent.nsToJavaModifiers(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, absX, absY, 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, absX, absY, jmodifiers, delta);
105 }
106 }
107
108 private void dispatchScrollEvent(final int x, final int y, final int absX,
109 final int absY, final int modifiers,
110 final double delta) {
111 final long when = System.currentTimeMillis();
112 final int scrollType = MouseWheelEvent.WHEEL_UNIT_SCROLL;
113 final int scrollAmount = 1;
114 int wheelRotation = (int) delta;
115 int signum = (int) Math.signum(delta);
116 if (signum * delta < 1) {
117 wheelRotation = signum;
118 }
119 // invert the wheelRotation for the peer
120 eventNotifier.notifyMouseWheelEvent(when, x, y, absX, absY, modifiers,
121 scrollType, scrollAmount,
122 -wheelRotation, -delta, null);
123 }
124
125 /**
126 * Handles key events.
127 */
128 void handleKeyEvent(int eventType, int modifierFlags, String chars, String charsIgnoringModifiers,
129 short keyCode, boolean needsKeyTyped, boolean needsKeyReleased) {
130 boolean isFlagsChangedEvent =
131 isNpapiCallback ? (eventType == CocoaConstants.NPCocoaEventFlagsChanged) :
132 (eventType == CocoaConstants.NSFlagsChanged);
133
134 int jeventType = KeyEvent.KEY_PRESSED;
135 int jkeyCode = KeyEvent.VK_UNDEFINED;
136 int jkeyLocation = KeyEvent.KEY_LOCATION_UNKNOWN;
137 boolean postsTyped = false;
138 boolean spaceKeyTyped = 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 //Check if String chars contains SPACE character.
157 if (chars.trim().isEmpty()) {
158 spaceKeyTyped = true;
159 }
160 }
161
162 char testCharIgnoringModifiers = charsIgnoringModifiers != null && charsIgnoringModifiers.length() > 0 ?
163 charsIgnoringModifiers.charAt(0) : KeyEvent.CHAR_UNDEFINED;
164
165 int[] in = new int[] {testCharIgnoringModifiers, isDeadChar ? 1 : 0, modifierFlags, keyCode};
166 int[] out = new int[3]; // [jkeyCode, jkeyLocation, deadChar]
167
168 postsTyped = NSEvent.nsToJavaKeyInfo(in, out);
169 if (!postsTyped) {
170 testChar = KeyEvent.CHAR_UNDEFINED;
171 }
172
173 if(isDeadChar){
174 testChar = (char) out[2];
175 if(testChar == 0){
176 return;
177 }
178 }
179
180 // If Pinyin Simplified input method is selected, CAPS_LOCK key is supposed to switch
181 // input to latin letters.
182 // It is necessary to use testCharIgnoringModifiers instead of testChar for event
183 // generation in such case to avoid uppercase letters in text components.
184 LWCToolkit lwcToolkit = (LWCToolkit)Toolkit.getDefaultToolkit();
185 if (lwcToolkit.getLockingKeyState(KeyEvent.VK_CAPS_LOCK) &&
186 Locale.SIMPLIFIED_CHINESE.equals(lwcToolkit.getDefaultKeyboardLocale())) {
187 testChar = testCharIgnoringModifiers;
188 }
189
190 jkeyCode = out[0];
191 jkeyLocation = out[1];
192 jeventType = isNpapiCallback ? NSEvent.npToJavaEventType(eventType) :
193 NSEvent.nsToJavaEventType(eventType);
194 }
195
196 char javaChar = NSEvent.nsToJavaChar(testChar, modifierFlags, spaceKeyTyped);
197 // Some keys may generate a KEY_TYPED, but we can't determine
198 // what that character is. That's likely a bug, but for now we
199 // just check for CHAR_UNDEFINED.
200 if (javaChar == KeyEvent.CHAR_UNDEFINED) {
201 postsTyped = false;
202 }
203
204 int jmodifiers = NSEvent.nsToJavaModifiers(modifierFlags);
205 long when = System.currentTimeMillis();
206
207 if (jeventType == KeyEvent.KEY_PRESSED) {
208 lastKeyPressCode = jkeyCode;
209 }
210 eventNotifier.notifyKeyEvent(jeventType, when, jmodifiers,
211 jkeyCode, javaChar, jkeyLocation);
212
213 // Current browser may be sending input events, so don't
214 // post the KEY_TYPED here.
215 postsTyped &= needsKeyTyped;
216
217 // That's the reaction on the PRESSED (not RELEASED) event as it comes to
218 // appear in MacOSX.
219 // Modifier keys (shift, etc) don't want to send TYPED events.
220 // On the other hand we don't want to generate keyTyped events
221 // for clipboard related shortcuts like Meta + [CVX]
222 if (jeventType == KeyEvent.KEY_PRESSED && postsTyped &&
223 (jmodifiers & KeyEvent.META_DOWN_MASK) == 0) {
224 // Enter and Space keys finish the input method processing,
225 // KEY_TYPED and KEY_RELEASED events for them are synthesized in handleInputEvent.
226 if (needsKeyReleased && (jkeyCode == KeyEvent.VK_ENTER || jkeyCode == KeyEvent.VK_SPACE)) {
227 return;
228 }
229 eventNotifier.notifyKeyEvent(KeyEvent.KEY_TYPED, when, jmodifiers,
230 KeyEvent.VK_UNDEFINED, javaChar,
231 KeyEvent.KEY_LOCATION_UNKNOWN);
232 //If events come from Firefox, released events should also be generated.
233 if (needsKeyReleased) {
234 eventNotifier.notifyKeyEvent(KeyEvent.KEY_RELEASED, when, jmodifiers,
235 jkeyCode, javaChar,
236 KeyEvent.KEY_LOCATION_UNKNOWN);
237 }
238 }
239 }
240
241 void handleInputEvent(String text) {
242 if (text != null) {
243 int index = 0, length = text.length();
244 char c = 0;
245 while (index < length) {
246 c = text.charAt(index);
247 eventNotifier.notifyKeyEvent(KeyEvent.KEY_TYPED,
248 System.currentTimeMillis(),
249 0, KeyEvent.VK_UNDEFINED, c,
250 KeyEvent.KEY_LOCATION_UNKNOWN);
251 index++;
252 }
253 eventNotifier.notifyKeyEvent(KeyEvent.KEY_RELEASED,
254 System.currentTimeMillis(),
255 0, lastKeyPressCode, c,
256 KeyEvent.KEY_LOCATION_UNKNOWN);
257 }
258 }
259
260 void handleWindowFocusEvent(boolean gained, LWWindowPeer opposite) {
261 eventNotifier.notifyActivation(gained, opposite);
262 }
263 }