1 /*
2 * Copyright (c) 2003, 2007, 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 java.util.logging.Level;
31 import java.util.logging.Logger;
32
33 class XWINProtocol extends XProtocol implements XStateProtocol, XLayerProtocol {
34 final static Logger log = Logger.getLogger("sun.awt.X11.XWINProtocol");
35
36 /* Gnome WM spec */
37 XAtom XA_WIN_SUPPORTING_WM_CHECK = XAtom.get("_WIN_SUPPORTING_WM_CHECK");
38 XAtom XA_WIN_PROTOCOLS = XAtom.get("_WIN_PROTOCOLS");
39 XAtom XA_WIN_STATE = XAtom.get("_WIN_STATE");
40
41 public boolean supportsState(int state) {
42 return doStateProtocol(); // TODO - check for Frame constants
43 }
44
45 public void setState(XWindowPeer window, int state) {
46 if (window.isShowing()) {
47 /*
48 * Request state transition from a Gnome WM (_WIN protocol) by sending
49 * _WIN_STATE ClientMessage to root window.
50 */
51 long win_state = 0;
52
53 if ( (state & Frame.MAXIMIZED_VERT) != 0) {
54 win_state |= WIN_STATE_MAXIMIZED_VERT;
55 }
56 if ( (state & Frame.MAXIMIZED_HORIZ) != 0) {
57 win_state |= WIN_STATE_MAXIMIZED_HORIZ;
58 }
59
60 XClientMessageEvent req = new XClientMessageEvent();
61 req.set_type(XlibWrapper.ClientMessage);
62 req.set_window(window.getWindow());
63 req.set_message_type(XA_WIN_STATE.getAtom());
64 req.set_format(32);
65 req.set_data(0, (WIN_STATE_MAXIMIZED_HORIZ | WIN_STATE_MAXIMIZED_VERT));
66 req.set_data(1, win_state);
67 if (log.isLoggable(Level.FINE)) {
68 log.fine("Sending WIN_STATE to root to change the state to " + win_state);
69 }
70 try {
71 XToolkit.awtLock();
72 XlibWrapper.XSendEvent(XToolkit.getDisplay(),
73 XlibWrapper.RootWindow(XToolkit.getDisplay(),
74 window.getScreenNumber()),
75 false,
76 XlibWrapper.SubstructureRedirectMask | XlibWrapper.SubstructureNotifyMask,
77 req.pData);
78 }
79 finally {
80 XToolkit.awtUnlock();
81 }
82 req.dispose();
83 } else {
84 /*
85 * Specify initial state for a Gnome WM (_WIN protocol) by setting
86 * WIN_STATE property on the window to the desired state before
87 * mapping it.
88 */
89 /* Be careful to not wipe out state bits we don't understand */
90 long win_state = XA_WIN_STATE.getCard32Property(window);
91 long old_win_state = win_state;
92
93 /*
94 * In their stupid quest of reinventing every wheel, Gnome WM spec
95 * have its own "minimized" hint (instead of using initial state
96 * and WM_STATE hints). This is bogus, but, apparently, some WMs
97 * pay attention.
98 */
99 if ((state & Frame.ICONIFIED) != 0) {
100 win_state |= WIN_STATE_MINIMIZED;
101 } else {
102 win_state &= ~WIN_STATE_MINIMIZED;
103 }
104
105 if ((state & Frame.MAXIMIZED_VERT) != 0) {
106 win_state |= WIN_STATE_MAXIMIZED_VERT;
107 } else {
108 win_state &= ~WIN_STATE_MAXIMIZED_VERT;
109 }
110
111 if ((state & Frame.MAXIMIZED_HORIZ) != 0) {
112 win_state |= WIN_STATE_MAXIMIZED_HORIZ;
113 } else {
114 win_state &= ~WIN_STATE_MAXIMIZED_HORIZ;
115 }
116 if ((old_win_state ^ win_state) != 0) {
117 if (log.isLoggable(Level.FINE)) {
118 log.fine("Setting WIN_STATE on " + window + " to change the state to " + win_state);
119 }
120 XA_WIN_STATE.setCard32Property(window, win_state);
121 }
122 }
123 }
124
125 public int getState(XWindowPeer window) {
126 long win_state = XA_WIN_STATE.getCard32Property(window);
127 int java_state = Frame.NORMAL;
128 if ((win_state & WIN_STATE_MAXIMIZED_VERT) != 0) {
129 java_state |= Frame.MAXIMIZED_VERT;
130 }
131 if ((win_state & WIN_STATE_MAXIMIZED_HORIZ) != 0) {
132 java_state |= Frame.MAXIMIZED_HORIZ;
133 }
134 return java_state;
135 }
136
137 public boolean isStateChange(XPropertyEvent e) {
138 return doStateProtocol() && e.get_atom() == XA_WIN_STATE.getAtom();
139 }
140
141 public void unshadeKludge(XWindowPeer window) {
142 long win_state = XA_WIN_STATE.getCard32Property(window);
143 if ((win_state & WIN_STATE_SHADED) == 0) {
144 return;
145 }
146 win_state &= ~WIN_STATE_SHADED;
147 XA_WIN_STATE.setCard32Property(window, win_state);
148 }
149
150 public boolean supportsLayer(int layer) {
151 return ((layer == LAYER_ALWAYS_ON_TOP) || (layer == LAYER_NORMAL)) && doLayerProtocol();
152 }
153
154 public void setLayer(XWindowPeer window, int layer) {
155 if (window.isShowing()) {
156 XClientMessageEvent req = new XClientMessageEvent();
157 req.set_type(XlibWrapper.ClientMessage);
158 req.set_window(window.getWindow());
159 req.set_message_type(XA_WIN_LAYER.getAtom());
160 req.set_format(32);
161 req.set_data(0, layer == LAYER_NORMAL ? WIN_LAYER_NORMAL : WIN_LAYER_ONTOP);
162 req.set_data(1, 0);
163 req.set_data(2, 0);
164 if (log.isLoggable(Level.FINE)) {
165 log.fine("Setting layer " + layer + " by root message : " + req);
166 }
167 XToolkit.awtLock();
168 try {
169 XlibWrapper.XSendEvent(XToolkit.getDisplay(),
170 XlibWrapper.RootWindow(XToolkit.getDisplay(),
171 window.getScreenNumber()),
172 false,
173 /*XlibWrapper.SubstructureRedirectMask | */XlibWrapper.SubstructureNotifyMask,
174 req.pData);
175 }
176 finally {
177 XToolkit.awtUnlock();
178 }
179 req.dispose();
180 } else {
181 if (log.isLoggable(Level.FINE)) {
182 log.fine("Setting layer property to " + layer);
183 }
184 XA_WIN_LAYER.setCard32Property(window, layer == LAYER_NORMAL ? WIN_LAYER_NORMAL : WIN_LAYER_ONTOP);
185 }
186 }
187
188 XAtom XA_WIN_LAYER = XAtom.get("_WIN_LAYER");
189
190 /* _WIN_STATE bits */
191 final static int WIN_STATE_STICKY =(1<<0); /* everyone knows sticky */
192 final static int WIN_STATE_MINIMIZED =(1<<1); /* Reserved - definition is unclear */
193 final static int WIN_STATE_MAXIMIZED_VERT =(1<<2); /* window in maximized V state */
194 final static int WIN_STATE_MAXIMIZED_HORIZ =(1<<3); /* window in maximized H state */
195 final static int WIN_STATE_HIDDEN =(1<<4); /* not on taskbar but window visible*/
196 final static int WIN_STATE_SHADED =(1<<5); /* shaded (MacOS / Afterstep style) */
197 /* _WIN_LAYER values */
198 final static int WIN_LAYER_ONTOP = 6;
199 final static int WIN_LAYER_NORMAL = 4;
200
201 long WinWindow = 0;
202 boolean supportChecked = false;
203 void detect() {
204 if (supportChecked) {
205 return;
206 }
207 WinWindow = checkAnchor(XA_WIN_SUPPORTING_WM_CHECK, XAtom.XA_CARDINAL);
208 supportChecked = true;
209 if (log.isLoggable(Level.FINE)) {
210 log.fine("### " + this + " is active: " + (WinWindow != 0));
211 }
212 }
213
214 boolean active() {
215 detect();
216 return WinWindow != 0;
217 }
218 boolean doStateProtocol() {
219 boolean res = active() && checkProtocol(XA_WIN_PROTOCOLS, XA_WIN_STATE);
220 if (log.isLoggable(Level.FINE)) {
221 log.fine("### " + this + " supports state: " + res);
222 }
223 return res;
224 }
225
226 boolean doLayerProtocol() {
227 boolean res = active() && checkProtocol(XA_WIN_PROTOCOLS, XA_WIN_LAYER);
228 if (log.isLoggable(Level.FINE)) {
229 log.fine("### " + this + " supports layer: " + res);
230 }
231 return res;
232 }
233 }