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 com.sun.javafx.scene.canvas;
27
28 import com.sun.javafx.scene.NodeHelper;
29 import com.sun.javafx.sg.prism.NGNode;
30 import com.sun.javafx.util.Utils;
31 import javafx.scene.Node;
32 import javafx.scene.canvas.Canvas;
33
34 /**
35 * Used to access internal methods of Canvas.
36 */
37 public class CanvasHelper extends NodeHelper {
38 private static final CanvasHelper theInstance;
39 private static CanvasAccessor canvasAccessor;
40
41 static {
42 theInstance = new CanvasHelper();
43 Utils.forceInit(Canvas.class);
44 }
45
46 private static CanvasHelper getInstance() {
47 return theInstance;
48 }
49
50 public static void initHelper(Canvas canvas) {
51 setHelper(canvas, getInstance());
52 }
53
54 @Override
55 protected NGNode createPeerImpl(Node node) {
56 return canvasAccessor.doCreatePeer(node);
57 }
58
59 @Override
60 protected void updatePeerImpl(Node node) {
61 super.updatePeerImpl(node);
62 canvasAccessor.doUpdatePeer(node);
63 }
64
65 public static void setCanvasAccessor(final CanvasAccessor newAccessor) {
66 if (canvasAccessor != null) {
67 throw new IllegalStateException();
68 }
69
70 canvasAccessor = newAccessor;
71 }
72
73 public interface CanvasAccessor {
74 NGNode doCreatePeer(Node node);
75 void doUpdatePeer(Node node);
76 }
77
78 }
|
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 com.sun.javafx.scene.canvas;
27
28 import com.sun.javafx.geom.BaseBounds;
29 import com.sun.javafx.geom.transform.BaseTransform;
30 import com.sun.javafx.jmx.MXNodeAlgorithm;
31 import com.sun.javafx.jmx.MXNodeAlgorithmContext;
32 import com.sun.javafx.scene.NodeHelper;
33 import com.sun.javafx.sg.prism.NGNode;
34 import com.sun.javafx.util.Utils;
35 import javafx.scene.Node;
36 import javafx.scene.canvas.Canvas;
37
38 /**
39 * Used to access internal methods of Canvas.
40 */
41 public class CanvasHelper extends NodeHelper {
42 private static final CanvasHelper theInstance;
43 private static CanvasAccessor canvasAccessor;
44
45 static {
46 theInstance = new CanvasHelper();
47 Utils.forceInit(Canvas.class);
48 }
49
50 private static CanvasHelper getInstance() {
51 return theInstance;
52 }
53
54 public static void initHelper(Canvas canvas) {
55 setHelper(canvas, getInstance());
56 }
57
58 @Override
59 protected NGNode createPeerImpl(Node node) {
60 return canvasAccessor.doCreatePeer(node);
61 }
62
63 @Override
64 protected void updatePeerImpl(Node node) {
65 super.updatePeerImpl(node);
66 canvasAccessor.doUpdatePeer(node);
67 }
68
69 @Override
70 protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds,
71 BaseTransform tx) {
72 return canvasAccessor.doComputeGeomBounds(node, bounds, tx);
73 }
74
75 @Override
76 protected boolean computeContainsImpl(Node node, double localX, double localY) {
77 return canvasAccessor.doComputeContains(node, localX, localY);
78 }
79
80 @Override
81 protected Object processMXNodeImpl(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx) {
82 return canvasAccessor.doProcessMXNode(node, alg, ctx);
83 }
84 public static void setCanvasAccessor(final CanvasAccessor newAccessor) {
85 if (canvasAccessor != null) {
86 throw new IllegalStateException();
87 }
88
89 canvasAccessor = newAccessor;
90 }
91
92 public interface CanvasAccessor {
93 NGNode doCreatePeer(Node node);
94 void doUpdatePeer(Node node);
95 BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx);
96 boolean doComputeContains(Node node, double localX, double localY);
97 Object doProcessMXNode(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx);
98 }
99
100 }
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