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.java2d;
27
28 import java.awt.Color;
29 import java.awt.Rectangle;
30 import java.awt.AlphaComposite;
31 import java.awt.GraphicsEnvironment;
32
33 import sun.awt.DisplayChangedListener;
34 import sun.java2d.StateTrackable.State;
35 import sun.java2d.loops.CompositeType;
36 import sun.java2d.loops.SurfaceType;
37 import sun.java2d.loops.Blit;
38 import sun.java2d.loops.BlitBg;
39 import sun.awt.image.SurfaceManager;
40 import sun.awt.image.SurfaceManager.FlushableCacheData;
41
42 import java.security.AccessController;
43 import sun.security.action.GetPropertyAction;
44
45 /**
46 * The proxy class encapsulates the logic for managing alternate
47 * SurfaceData representations of a primary SurfaceData.
48 * The main class will handle tracking the state changes of the
49 * primary SurfaceData and updating the associated SurfaceData
50 * proxy variants.
51 * <p>
52 * Subclasses have 2 main responsibilities:
53 * <ul>
54 * <li> Override the isSupportedOperation() method to determine if
55 * a given operation can be accelerated with a given source
56 * SurfaceData
57 * <li> Override the validateSurfaceData() method to create or update
58 * a given accelerated surface to hold the pixels for the indicated
59 * source SurfaceData
60 * </ul>
61 * If necessary, a subclass may also override the updateSurfaceData
62 * method to transfer the pixels to the accelerated surface.
63 * By default the parent class will transfer the pixels using a
64 * standard Blit operation between the two SurfaceData objects.
65 */
66 public abstract class SurfaceDataProxy
67 implements DisplayChangedListener, SurfaceManager.FlushableCacheData
68 {
69 private static boolean cachingAllowed;
70 private static int defaultThreshold;
71
72 static {
73 cachingAllowed = true;
74 String manimg = (String)AccessController.doPrivileged(
75 new GetPropertyAction("sun.java2d.managedimages"));
76 if (manimg != null && manimg.equals("false")) {
77 cachingAllowed = false;
78 System.out.println("Disabling managed images");
79 }
80
81 defaultThreshold = 1;
82 String num = (String)AccessController.doPrivileged(
83 new GetPropertyAction("sun.java2d.accthreshold"));
84 if (num != null) {
85 try {
86 int parsed = Integer.parseInt(num);
87 if (parsed >= 0) {
88 defaultThreshold = parsed;
89 System.out.println("New Default Acceleration Threshold: " +
90 defaultThreshold);
91 }
92 } catch (NumberFormatException e) {
93 System.err.println("Error setting new threshold:" + e);
94 }
95 }
96 }
97
98 public static boolean isCachingAllowed() {
99 return cachingAllowed;
100 }
101
102 /**
|
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.java2d;
27
28 import java.awt.Color;
29 import java.awt.Rectangle;
30 import java.awt.AlphaComposite;
31 import java.awt.GraphicsEnvironment;
32
33 import sun.awt.DisplayChangedListener;
34 import sun.java2d.StateTrackable.State;
35 import sun.java2d.loops.CompositeType;
36 import sun.java2d.loops.SurfaceType;
37 import sun.java2d.loops.Blit;
38 import sun.java2d.loops.BlitBg;
39 import sun.awt.image.SurfaceManager;
40
41 import java.security.AccessController;
42 import sun.security.action.GetPropertyAction;
43
44 /**
45 * The proxy class encapsulates the logic for managing alternate
46 * SurfaceData representations of a primary SurfaceData.
47 * The main class will handle tracking the state changes of the
48 * primary SurfaceData and updating the associated SurfaceData
49 * proxy variants.
50 * <p>
51 * Subclasses have 2 main responsibilities:
52 * <ul>
53 * <li> Override the isSupportedOperation() method to determine if
54 * a given operation can be accelerated with a given source
55 * SurfaceData
56 * <li> Override the validateSurfaceData() method to create or update
57 * a given accelerated surface to hold the pixels for the indicated
58 * source SurfaceData
59 * </ul>
60 * If necessary, a subclass may also override the updateSurfaceData
61 * method to transfer the pixels to the accelerated surface.
62 * By default the parent class will transfer the pixels using a
63 * standard Blit operation between the two SurfaceData objects.
64 */
65 public abstract class SurfaceDataProxy
66 implements DisplayChangedListener, SurfaceManager.FlushableCacheData
67 {
68 private static boolean cachingAllowed;
69 private static int defaultThreshold;
70
71 static {
72 cachingAllowed = true;
73 String manimg = AccessController.doPrivileged(
74 new GetPropertyAction("sun.java2d.managedimages"));
75 if (manimg != null && manimg.equals("false")) {
76 cachingAllowed = false;
77 System.out.println("Disabling managed images");
78 }
79
80 defaultThreshold = 1;
81 String num = AccessController.doPrivileged(
82 new GetPropertyAction("sun.java2d.accthreshold"));
83 if (num != null) {
84 try {
85 int parsed = Integer.parseInt(num);
86 if (parsed >= 0) {
87 defaultThreshold = parsed;
88 System.out.println("New Default Acceleration Threshold: " +
89 defaultThreshold);
90 }
91 } catch (NumberFormatException e) {
92 System.err.println("Error setting new threshold:" + e);
93 }
94 }
95 }
96
97 public static boolean isCachingAllowed() {
98 return cachingAllowed;
99 }
100
101 /**
|