1 /*
2 * Copyright (c) 2012, 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.awt;
27
28 import java.awt.GraphicsConfiguration;
29 import java.awt.GraphicsDevice;
30 import java.awt.Window;
31 import java.awt.AWTPermission;
32 import java.awt.DisplayMode;
33 import java.util.Objects;
34
35 import sun.java2d.opengl.CGLGraphicsConfig;
36
37 public final class CGraphicsDevice extends GraphicsDevice {
38
39 // CoreGraphics display ID
40 private final int displayID;
41
42 // Array of all GraphicsConfig instances for this device
43 private final GraphicsConfiguration[] configs;
44
45 // Default config (temporarily hard coded)
46 private final int DEFAULT_CONFIG = 0;
47
48 private static AWTPermission fullScreenExclusivePermission;
49
50 // Save/restore DisplayMode for the Full Screen mode
51 private DisplayMode originalMode;
52
53 public CGraphicsDevice(int displayID) {
54 this.displayID = displayID;
55 configs = new GraphicsConfiguration[] {
56 CGLGraphicsConfig.getConfig(this, 0)
57 };
58 }
59
60 /**
61 * @return CoreGraphics display id.
62 */
63 public int getCoreGraphicsScreen() {
64 return displayID;
65 }
66
67 /**
68 * Return a list of all configurations.
69 */
70 @Override
71 public GraphicsConfiguration[] getConfigurations() {
72 return configs.clone();
73 }
74
75 /**
76 * Return the default configuration.
77 */
78 @Override
79 public GraphicsConfiguration getDefaultConfiguration() {
80 return configs[DEFAULT_CONFIG];
81 }
82
83 /**
84 * Return a human-readable screen description.
85 */
86 @Override
87 public String getIDstring() {
88 return "Display " + this.displayID;
89 }
90
91 /**
92 * Returns the type of the graphics device.
93 * @see #TYPE_RASTER_SCREEN
94 * @see #TYPE_PRINTER
95 * @see #TYPE_IMAGE_BUFFER
96 */
97 @Override
98 public int getType() {
99 return TYPE_RASTER_SCREEN;
100 }
101
102 public double getXResolution() {
103 return nativeGetXResolution(displayID);
104 }
105
106 public double getYResolution() {
107 return nativeGetYResolution(displayID);
108 }
109
110 private static native double nativeGetXResolution(int displayID);
111 private static native double nativeGetYResolution(int displayID);
112
113 /**
114 * Enters full-screen mode, or returns to windowed mode.
115 */
116 @Override
117 public synchronized void setFullScreenWindow(Window w) {
118 Window old = getFullScreenWindow();
119 if (w == old) {
120 return;
121 }
122
123 boolean fsSupported = isFullScreenSupported();
124
125 if (fsSupported && old != null) {
126 // restore original display mode and enter windowed mode.
127 if (originalMode != null) {
128 setDisplayMode(originalMode);
129 originalMode = null;
130 }
131 exitFullScreenExclusive(old);
132 }
133
134 super.setFullScreenWindow(w);
135
136 if (fsSupported && w != null) {
137 if (isDisplayChangeSupported()) {
138 originalMode = getDisplayMode();
139 }
140 // enter fullscreen mode
141 enterFullScreenExclusive(w);
142 }
143 }
144
145 /**
146 * Returns true if this GraphicsDevice supports
147 * full-screen exclusive mode and false otherwise.
148 */
149 @Override
150 public boolean isFullScreenSupported() {
151 return isFSExclusiveModeAllowed();
152 }
153
154 private static boolean isFSExclusiveModeAllowed() {
155 SecurityManager security = System.getSecurityManager();
156 if (security != null) {
157 if (fullScreenExclusivePermission == null) {
158 fullScreenExclusivePermission =
159 new AWTPermission("fullScreenExclusive");
160 }
161 try {
162 security.checkPermission(fullScreenExclusivePermission);
163 } catch (SecurityException e) {
164 return false;
165 }
166 }
167 return true;
168 }
169
170 private static void enterFullScreenExclusive(Window w) {
171 FullScreenCapable peer = (FullScreenCapable)w.getPeer();
172 if (peer != null) {
173 peer.enterFullScreenMode();
174 }
175 }
176
177 private static void exitFullScreenExclusive(Window w) {
178 FullScreenCapable peer = (FullScreenCapable)w.getPeer();
179 if (peer != null) {
180 peer.exitFullScreenMode();
181 }
182 }
183
184 @Override
185 public boolean isDisplayChangeSupported() {
186 return true;
187 }
188
189 @Override
190 public void setDisplayMode(final DisplayMode dm) {
191 if (dm == null) {
192 throw new IllegalArgumentException("Invalid display mode");
193 }
194 if (!Objects.equals(dm, getDisplayMode())) {
195 final Window w = getFullScreenWindow();
196 if (w != null) {
197 exitFullScreenExclusive(w);
198 }
199 nativeSetDisplayMode(displayID, dm.getWidth(), dm.getHeight(),
200 dm.getBitDepth(), dm.getRefreshRate());
201 if (isFullScreenSupported() && w != null) {
202 enterFullScreenExclusive(w);
203 }
204 }
205 }
206
207 @Override
208 public DisplayMode getDisplayMode() {
209 return nativeGetDisplayMode(displayID);
210 }
211
212 @Override
213 public DisplayMode[] getDisplayModes() {
214 return nativeGetDisplayModes(displayID);
215 }
216
217 private native void nativeSetDisplayMode(int displayID, int w, int h, int bpp, int refrate);
218
219 private native DisplayMode nativeGetDisplayMode(int displayID);
220
221 private native DisplayMode[] nativeGetDisplayModes(int displayID);
222 }