1 /*
2 * Copyright (c) 2003, 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
229 }
230
231 return returnCode;
232 }
233
234 /**
235 * Returns true if rendering data was lost since the last validate call.
236 *
237 * @see java.awt.image.VolatileImage#contentsLost
238 */
239 public boolean contentsLost() {
240 return lostSurface;
241 }
242
243 /**
244 * Creates a new accelerated surface that is compatible with the
245 * current GraphicsConfiguration. Returns the new accelerated
246 * SurfaceData object, or null if the surface creation was not successful.
247 *
248 * Platform-specific subclasses should initialize an accelerated
249 * surface (e.g. a DirectDraw surface on Windows, an OpenGL pbuffer,
250 * or an X11 pixmap).
251 */
252 protected abstract SurfaceData initAcceleratedSurface();
253
254 /**
255 * Creates a software-based surface (of type BufImgSurfaceData).
256 * The software representation is only created when needed, which
257 * is only during some situation in which the hardware surface
258 * cannot be allocated. This allows apps to at least run,
259 * albeit more slowly than they would otherwise.
260 */
261 protected SurfaceData getBackupSurface() {
262 if (sdBackup == null) {
263 BufferedImage bImg = vImg.getBackupImage();
264 // Sabotage the acceleration capabilities of the BufImg surface
265 SunWritableRaster.stealTrackable(bImg
266 .getRaster()
267 .getDataBuffer()).setUntrackable();
268 sdBackup = BufImgSurfaceData.createData(bImg);
269 }
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1 /*
2 * Copyright (c) 2003, 2015, 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
229 }
230
231 return returnCode;
232 }
233
234 /**
235 * Returns true if rendering data was lost since the last validate call.
236 *
237 * @see java.awt.image.VolatileImage#contentsLost
238 */
239 public boolean contentsLost() {
240 return lostSurface;
241 }
242
243 /**
244 * Creates a new accelerated surface that is compatible with the
245 * current GraphicsConfiguration. Returns the new accelerated
246 * SurfaceData object, or null if the surface creation was not successful.
247 *
248 * Platform-specific subclasses should initialize an accelerated
249 * surface (e.g. a DirectDraw surface on Windows, an OpenGL FBO,
250 * or an X11 pixmap).
251 */
252 protected abstract SurfaceData initAcceleratedSurface();
253
254 /**
255 * Creates a software-based surface (of type BufImgSurfaceData).
256 * The software representation is only created when needed, which
257 * is only during some situation in which the hardware surface
258 * cannot be allocated. This allows apps to at least run,
259 * albeit more slowly than they would otherwise.
260 */
261 protected SurfaceData getBackupSurface() {
262 if (sdBackup == null) {
263 BufferedImage bImg = vImg.getBackupImage();
264 // Sabotage the acceleration capabilities of the BufImg surface
265 SunWritableRaster.stealTrackable(bImg
266 .getRaster()
267 .getDataBuffer()).setUntrackable();
268 sdBackup = BufImgSurfaceData.createData(bImg);
269 }
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