1 /*
2 * Copyright (c) 2012, 2020, 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.AWTPermission;
29 import java.awt.DisplayMode;
30 import java.awt.GraphicsConfiguration;
31 import java.awt.GraphicsDevice;
32 import java.awt.Insets;
33 import java.awt.Rectangle;
34 import java.awt.Window;
35 import java.awt.geom.Rectangle2D;
36 import java.awt.peer.WindowPeer;
37 import java.util.Objects;
38
39 import sun.java2d.SunGraphicsEnvironment;
40 import sun.java2d.opengl.CGLGraphicsConfig;
41
42 import static java.awt.peer.ComponentPeer.SET_BOUNDS;
43
44 public final class CGraphicsDevice extends GraphicsDevice
45 implements DisplayChangedListener {
46
47 /**
48 * CoreGraphics display ID. This identifier can become non-valid at any time
49 * therefore methods, which is using this id should be ready to it.
50 */
51 private volatile int displayID;
52 private volatile double xResolution;
53 private volatile double yResolution;
54 private volatile Rectangle bounds;
55 private volatile int scale;
56
57 private final GraphicsConfiguration config;
58
59 private static AWTPermission fullScreenExclusivePermission;
60
61 // Save/restore DisplayMode for the Full Screen mode
62 private DisplayMode originalMode;
63
64 public CGraphicsDevice(final int displayID) {
65 this.displayID = displayID;
66 config = CGLGraphicsConfig.getConfig(this);
67 // initializes default device state, might be redundant step since we
68 // call "displayChanged()" later anyway, but we do not want to leave the
69 // device in an inconsistent state after construction
70 displayChanged();
71 }
72
73 /**
74 * Return a list of all configurations.
75 */
76 @Override
77 public GraphicsConfiguration[] getConfigurations() {
78 return new GraphicsConfiguration[]{config};
79 }
80
81 /**
82 * Return the default configuration.
83 */
84 @Override
85 public GraphicsConfiguration getDefaultConfiguration() {
86 return config;
87 }
88
89 /**
90 * Return a human-readable screen description.
91 */
92 @Override
93 public String getIDstring() {
94 return "Display " + displayID;
95 }
96
97 /**
98 * Returns the type of the graphics device.
99 * @see #TYPE_RASTER_SCREEN
100 * @see #TYPE_PRINTER
101 * @see #TYPE_IMAGE_BUFFER
102 */
103 @Override
104 public int getType() {
105 return TYPE_RASTER_SCREEN;
106 }
107
108 public double getXResolution() {
109 return xResolution;
110 }
111
112 public double getYResolution() {
113 return yResolution;
114 }
115
116 Rectangle getBounds() {
117 return bounds.getBounds();
118 }
119
120 public Insets getScreenInsets() {
121 // the insets are queried synchronously and are not cached
122 // since there are no Quartz or Cocoa means to receive notifications
123 // on insets changes (e.g. when the Dock is resized):
124 // the existing CGDisplayReconfigurationCallBack is not notified
125 // as well as the NSApplicationDidChangeScreenParametersNotification
126 // is fired on the Dock location changes only
127 return nativeGetScreenInsets(displayID);
128 }
129
130 public int getScaleFactor() {
131 return scale;
132 }
133
134 public void invalidate(final int defaultDisplayID) {
135 //TODO do we need to restore the full-screen window/modes on old device?
136 displayID = defaultDisplayID;
137 }
138
139 @Override
140 public void displayChanged() {
141 xResolution = nativeGetXResolution(displayID);
142 yResolution = nativeGetYResolution(displayID);
143 bounds = nativeGetBounds(displayID).getBounds(); //does integer rounding
144 initScaleFactor();
145 resizeFSWindow(getFullScreenWindow(), bounds);
146 //TODO configs?
147 }
148
149 @Override
150 public void paletteChanged() {
151 // devices do not need to react to this event.
152 }
153
154 /**
155 * Enters full-screen mode, or returns to windowed mode.
156 */
157 @Override
158 public synchronized void setFullScreenWindow(Window w) {
159 Window old = getFullScreenWindow();
160 if (w == old) {
161 return;
162 }
163
164 boolean fsSupported = isFullScreenSupported();
165
166 if (fsSupported && old != null) {
167 // enter windowed mode and restore original display mode
168 exitFullScreenExclusive(old);
169 if (originalMode != null) {
170 setDisplayMode(originalMode);
171 originalMode = null;
172 }
173 }
174
175 super.setFullScreenWindow(w);
176
177 if (fsSupported && w != null) {
178 if (isDisplayChangeSupported()) {
179 originalMode = getDisplayMode();
180 }
181 // enter fullscreen mode
182 enterFullScreenExclusive(w);
183 }
184 }
185
186 /**
187 * Returns true if this GraphicsDevice supports
188 * full-screen exclusive mode and false otherwise.
189 */
190 @Override
191 public boolean isFullScreenSupported() {
192 return isFSExclusiveModeAllowed();
193 }
194
195 private static boolean isFSExclusiveModeAllowed() {
196 SecurityManager security = System.getSecurityManager();
197 if (security != null) {
198 if (fullScreenExclusivePermission == null) {
199 fullScreenExclusivePermission =
200 new AWTPermission("fullScreenExclusive");
201 }
202 try {
203 security.checkPermission(fullScreenExclusivePermission);
204 } catch (SecurityException e) {
205 return false;
206 }
207 }
208 return true;
209 }
210
211 private static void enterFullScreenExclusive(Window w) {
212 FullScreenCapable peer = AWTAccessor.getComponentAccessor().getPeer(w);
213 if (peer != null) {
214 peer.enterFullScreenMode();
215 }
216 }
217
218 private static void exitFullScreenExclusive(Window w) {
219 FullScreenCapable peer = AWTAccessor.getComponentAccessor().getPeer(w);
220 if (peer != null) {
221 peer.exitFullScreenMode();
222 }
223 }
224
225 /**
226 * Reapplies the size of this device to the full-screen window.
227 */
228 private static void resizeFSWindow(final Window w, final Rectangle b) {
229 if (w != null) {
230 WindowPeer peer = AWTAccessor.getComponentAccessor().getPeer(w);
231 if (peer != null) {
232 peer.setBounds(b.x, b.y, b.width, b.height, SET_BOUNDS);
233 }
234 }
235 }
236
237 @Override
238 public boolean isDisplayChangeSupported() {
239 return true;
240 }
241
242 @Override
243 public void setDisplayMode(final DisplayMode dm) {
244 if (dm == null) {
245 throw new IllegalArgumentException("Invalid display mode");
246 }
247 if (!Objects.equals(dm, getDisplayMode())) {
248 nativeSetDisplayMode(displayID, dm.getWidth(), dm.getHeight(),
249 dm.getBitDepth(), dm.getRefreshRate());
250 }
251 }
252
253 @Override
254 public DisplayMode getDisplayMode() {
255 return nativeGetDisplayMode(displayID);
256 }
257
258 @Override
259 public DisplayMode[] getDisplayModes() {
260 return nativeGetDisplayModes(displayID);
261 }
262
263 private void initScaleFactor() {
264 if (SunGraphicsEnvironment.isUIScaleEnabled()) {
265 double debugScale = SunGraphicsEnvironment.getDebugScale();
266 scale = (int) (debugScale >= 1
267 ? Math.round(debugScale)
268 : nativeGetScaleFactor(displayID));
269 } else {
270 scale = 1;
271 }
272 }
273
274 private static native double nativeGetScaleFactor(int displayID);
275
276 private static native void nativeSetDisplayMode(int displayID, int w, int h, int bpp, int refrate);
277
278 private static native DisplayMode nativeGetDisplayMode(int displayID);
279
280 private static native DisplayMode[] nativeGetDisplayModes(int displayID);
281
282 private static native double nativeGetXResolution(int displayID);
283
284 private static native double nativeGetYResolution(int displayID);
285
286 private static native Insets nativeGetScreenInsets(int displayID);
287
288 private static native Rectangle2D nativeGetBounds(int displayID);
289 }