1 /*
2 * Copyright (c) 2003, 2008, 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
27 package sun.awt.X11;
28
29 import java.awt.*;
30 import sun.util.logging.PlatformLogger;
31
32 class XWINProtocol extends XProtocol implements XStateProtocol, XLayerProtocol {
33 final static PlatformLogger log = PlatformLogger.getLogger("sun.awt.X11.XWINProtocol");
34
35 /* Gnome WM spec */
36 XAtom XA_WIN_SUPPORTING_WM_CHECK = XAtom.get("_WIN_SUPPORTING_WM_CHECK");
37 XAtom XA_WIN_PROTOCOLS = XAtom.get("_WIN_PROTOCOLS");
38 XAtom XA_WIN_STATE = XAtom.get("_WIN_STATE");
39
40 public boolean supportsState(int state) {
41 return doStateProtocol(); // TODO - check for Frame constants
42 }
43
44 public void setState(XWindowPeer window, int state) {
45 if (window.isShowing()) {
46 /*
47 * Request state transition from a Gnome WM (_WIN protocol) by sending
48 * _WIN_STATE ClientMessage to root window.
49 */
50 long win_state = 0;
51
52 if ( (state & Frame.MAXIMIZED_VERT) != 0) {
53 win_state |= WIN_STATE_MAXIMIZED_VERT;
54 }
55 if ( (state & Frame.MAXIMIZED_HORIZ) != 0) {
56 win_state |= WIN_STATE_MAXIMIZED_HORIZ;
57 }
58
59 XClientMessageEvent req = new XClientMessageEvent();
60 req.set_type(XConstants.ClientMessage);
61 req.set_window(window.getWindow());
62 req.set_message_type(XA_WIN_STATE.getAtom());
63 req.set_format(32);
64 req.set_data(0, (WIN_STATE_MAXIMIZED_HORIZ | WIN_STATE_MAXIMIZED_VERT));
65 req.set_data(1, win_state);
66 if (log.isLoggable(PlatformLogger.FINE)) {
67 log.fine("Sending WIN_STATE to root to change the state to " + win_state);
68 }
69 try {
70 XToolkit.awtLock();
71 XlibWrapper.XSendEvent(XToolkit.getDisplay(),
72 XlibWrapper.RootWindow(XToolkit.getDisplay(),
73 window.getScreenNumber()),
74 false,
75 XConstants.SubstructureRedirectMask | XConstants.SubstructureNotifyMask,
76 req.pData);
77 }
78 finally {
79 XToolkit.awtUnlock();
80 }
81 req.dispose();
82 } else {
83 /*
84 * Specify initial state for a Gnome WM (_WIN protocol) by setting
85 * WIN_STATE property on the window to the desired state before
86 * mapping it.
87 */
88 /* Be careful to not wipe out state bits we don't understand */
89 long win_state = XA_WIN_STATE.getCard32Property(window);
90 long old_win_state = win_state;
91
92 /*
93 * In their stupid quest of reinventing every wheel, Gnome WM spec
94 * have its own "minimized" hint (instead of using initial state
95 * and WM_STATE hints). This is bogus, but, apparently, some WMs
96 * pay attention.
97 */
98 if ((state & Frame.ICONIFIED) != 0) {
99 win_state |= WIN_STATE_MINIMIZED;
100 } else {
101 win_state &= ~WIN_STATE_MINIMIZED;
102 }
103
104 if ((state & Frame.MAXIMIZED_VERT) != 0) {
105 win_state |= WIN_STATE_MAXIMIZED_VERT;
106 } else {
107 win_state &= ~WIN_STATE_MAXIMIZED_VERT;
108 }
109
110 if ((state & Frame.MAXIMIZED_HORIZ) != 0) {
111 win_state |= WIN_STATE_MAXIMIZED_HORIZ;
112 } else {
113 win_state &= ~WIN_STATE_MAXIMIZED_HORIZ;
114 }
115 if ((old_win_state ^ win_state) != 0) {
116 if (log.isLoggable(PlatformLogger.FINE)) {
117 log.fine("Setting WIN_STATE on " + window + " to change the state to " + win_state);
118 }
119 XA_WIN_STATE.setCard32Property(window, win_state);
120 }
121 }
122 }
123
124 public int getState(XWindowPeer window) {
125 long win_state = XA_WIN_STATE.getCard32Property(window);
126 int java_state = Frame.NORMAL;
127 if ((win_state & WIN_STATE_MAXIMIZED_VERT) != 0) {
128 java_state |= Frame.MAXIMIZED_VERT;
129 }
130 if ((win_state & WIN_STATE_MAXIMIZED_HORIZ) != 0) {
131 java_state |= Frame.MAXIMIZED_HORIZ;
132 }
133 return java_state;
134 }
135
136 public boolean isStateChange(XPropertyEvent e) {
137 return doStateProtocol() && e.get_atom() == XA_WIN_STATE.getAtom();
138 }
139
140 public void unshadeKludge(XWindowPeer window) {
141 long win_state = XA_WIN_STATE.getCard32Property(window);
142 if ((win_state & WIN_STATE_SHADED) == 0) {
143 return;
144 }
145 win_state &= ~WIN_STATE_SHADED;
146 XA_WIN_STATE.setCard32Property(window, win_state);
147 }
148
149 public boolean supportsLayer(int layer) {
150 return ((layer == LAYER_ALWAYS_ON_TOP) || (layer == LAYER_NORMAL)) && doLayerProtocol();
151 }
152
153 public void setLayer(XWindowPeer window, int layer) {
154 if (window.isShowing()) {
155 XClientMessageEvent req = new XClientMessageEvent();
156 req.set_type(XConstants.ClientMessage);
157 req.set_window(window.getWindow());
158 req.set_message_type(XA_WIN_LAYER.getAtom());
159 req.set_format(32);
160 req.set_data(0, layer == LAYER_NORMAL ? WIN_LAYER_NORMAL : WIN_LAYER_ONTOP);
161 req.set_data(1, 0);
162 req.set_data(2, 0);
163 if (log.isLoggable(PlatformLogger.FINE)) {
164 log.fine("Setting layer " + layer + " by root message : " + req);
165 }
166 XToolkit.awtLock();
167 try {
168 XlibWrapper.XSendEvent(XToolkit.getDisplay(),
169 XlibWrapper.RootWindow(XToolkit.getDisplay(),
170 window.getScreenNumber()),
171 false,
172 /*XConstants.SubstructureRedirectMask | */XConstants.SubstructureNotifyMask,
173 req.pData);
174 }
175 finally {
176 XToolkit.awtUnlock();
177 }
178 req.dispose();
179 } else {
180 if (log.isLoggable(PlatformLogger.FINE)) {
181 log.fine("Setting layer property to " + layer);
182 }
183 XA_WIN_LAYER.setCard32Property(window, layer == LAYER_NORMAL ? WIN_LAYER_NORMAL : WIN_LAYER_ONTOP);
184 }
185 }
186
187 XAtom XA_WIN_LAYER = XAtom.get("_WIN_LAYER");
188
189 /* _WIN_STATE bits */
190 final static int WIN_STATE_STICKY =(1<<0); /* everyone knows sticky */
191 final static int WIN_STATE_MINIMIZED =(1<<1); /* Reserved - definition is unclear */
192 final static int WIN_STATE_MAXIMIZED_VERT =(1<<2); /* window in maximized V state */
193 final static int WIN_STATE_MAXIMIZED_HORIZ =(1<<3); /* window in maximized H state */
194 final static int WIN_STATE_HIDDEN =(1<<4); /* not on taskbar but window visible*/
195 final static int WIN_STATE_SHADED =(1<<5); /* shaded (MacOS / Afterstep style) */
196 /* _WIN_LAYER values */
197 final static int WIN_LAYER_ONTOP = 6;
198 final static int WIN_LAYER_NORMAL = 4;
199
200 long WinWindow = 0;
201 boolean supportChecked = false;
202 void detect() {
203 if (supportChecked) {
204 return;
205 }
206 WinWindow = checkAnchor(XA_WIN_SUPPORTING_WM_CHECK, XAtom.XA_CARDINAL);
207 supportChecked = true;
208 if (log.isLoggable(PlatformLogger.FINE)) {
209 log.fine("### " + this + " is active: " + (WinWindow != 0));
210 }
211 }
212
213 boolean active() {
214 detect();
215 return WinWindow != 0;
216 }
217 boolean doStateProtocol() {
218 boolean res = active() && checkProtocol(XA_WIN_PROTOCOLS, XA_WIN_STATE);
219 if (log.isLoggable(PlatformLogger.FINE)) {
220 log.fine("### " + this + " supports state: " + res);
221 }
222 return res;
223 }
224
225 boolean doLayerProtocol() {
226 boolean res = active() && checkProtocol(XA_WIN_PROTOCOLS, XA_WIN_LAYER);
227 if (log.isLoggable(PlatformLogger.FINE)) {
228 log.fine("### " + this + " supports layer: " + res);
229 }
230 return res;
231 }
232 }