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.lwawt.macosx;
27
28 import java.awt.*;
29
30 public class CCustomCursor extends Cursor {
31 static Dimension sMaxCursorSize;
32 static Dimension getMaxCursorSize() {
33 if (sMaxCursorSize != null) return sMaxCursorSize;
34 final Rectangle bounds = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration().getBounds();
35 return sMaxCursorSize = new Dimension(bounds.width / 2, bounds.height / 2);
36 }
37
38 Image fImage;
39 Point fHotspot;
40
41 public CCustomCursor(final Image cursor, final Point hotSpot, final String name) throws IndexOutOfBoundsException, HeadlessException {
42 super(name);
43 fImage = cursor;
44 fHotspot = hotSpot;
45
46 // This chunk of code is copied from sun.awt.CustomCursor
47 final Toolkit toolkit = Toolkit.getDefaultToolkit();
48
49 // Make sure image is fully loaded.
50 final Component c = new Canvas(); // for its imageUpdate method
51 final MediaTracker tracker = new MediaTracker(c);
52 tracker.addImage(fImage, 0);
53 try {
54 tracker.waitForAll();
55 } catch (final InterruptedException e) {}
56
57 int width = fImage.getWidth(c);
58 int height = fImage.getHeight(c);
59
60 // Fix for bug 4212593 The Toolkit.createCustomCursor does not
61 // check absence of the image of cursor
62 // If the image is invalid, the cursor will be hidden (made completely
63 // transparent). In this case, getBestCursorSize() will adjust negative w and h,
64 // but we need to set the hotspot inside the image here.
65 if (tracker.isErrorAny() || width < 0 || height < 0) {
66 fHotspot.x = fHotspot.y = 0;
67 }
68
69 // Scale image to nearest supported size
70 final Dimension nativeSize = toolkit.getBestCursorSize(width, height);
71 if (nativeSize.width != width || nativeSize.height != height) {
72 fImage = fImage.getScaledInstance(nativeSize.width, nativeSize.height, Image.SCALE_DEFAULT);
73 width = nativeSize.width;
74 height = nativeSize.height;
75 }
76
77 // NOTE: this was removed for 3169146, but in 1.5 the JCK tests for an exception and fails if one isn't thrown.
78 // See what JBuilder does.
79 // Verify that the hotspot is within cursor bounds.
80 if (fHotspot.x >= width || fHotspot.y >= height || fHotspot.x < 0 || fHotspot.y < 0) {
81 throw new IndexOutOfBoundsException("invalid hotSpot");
82 }
83
84 // Must normalize the hotspot
85 if (fHotspot.x >= width) {
86 fHotspot.x = width - 1; // it is zero based.
93 fHotspot.y = 0;
94 }
95 }
96
97 public static Dimension getBestCursorSize(final int preferredWidth, final int preferredHeight) {
98 // With Panther, cursors have no limit on their size. So give the client their
99 // preferred size, but no larger than half the dimensions of the main screen
100 // This will allow large cursors, but not cursors so large that they cover the
101 // screen. Since solaris nor windows allow cursors this big, this shouldn't be
102 // a limitation.
103 // JCK triggers an overflow in the int -- if we get a bizarre value normalize it.
104 final Dimension maxCursorSize = getMaxCursorSize();
105 final Dimension d = new Dimension(Math.max(1, Math.abs(preferredWidth)), Math.max(1, Math.abs(preferredHeight)));
106 return new Dimension(Math.min(d.width, maxCursorSize.width), Math.min(d.height, maxCursorSize.height));
107 }
108
109 // Called from native when the cursor is set
110 // Returns long array of [NSImage ptr, x hotspot, y hotspot]
111 CImage fCImage;
112 long getImageData() {
113 if (fCImage == null) {
114 try {
115 fCImage = CImage.getCreator().createFromImage(fImage);
116 } catch (IllegalArgumentException iae) {
117 // Silently return null - we want to hide cursor by providing an empty
118 // ByteArray or just null
119 return 0L;
120 }
121 }
122
123 return fCImage.ptr;
124 }
125
126 Point getHotSpot() {
127 return fHotspot;
128 }
129 }
|
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.lwawt.macosx;
27
28 import java.awt.*;
29
30 public class CCustomCursor extends Cursor {
31 static Dimension sMaxCursorSize;
32 static Dimension getMaxCursorSize() {
33 if (sMaxCursorSize != null) return sMaxCursorSize;
34 final Rectangle bounds = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration().getBounds();
35 return sMaxCursorSize = new Dimension(bounds.width / 2, bounds.height / 2);
36 }
37
38 Image fImage;
39 private boolean isImageOk = false;
40 Point fHotspot;
41
42 public CCustomCursor(final Image cursor, final Point hotSpot, final String name) throws IndexOutOfBoundsException, HeadlessException {
43 super(name);
44 fImage = cursor;
45 fHotspot = hotSpot;
46
47 // This chunk of code is copied from sun.awt.CustomCursor
48 final Toolkit toolkit = Toolkit.getDefaultToolkit();
49
50 // Make sure image is fully loaded.
51 final Component c = new Canvas(); // for its imageUpdate method
52 final MediaTracker tracker = new MediaTracker(c);
53 tracker.addImage(fImage, 0);
54 try {
55 tracker.waitForAll();
56 } catch (final InterruptedException e) {}
57
58 int width = fImage.getWidth(c);
59 int height = fImage.getHeight(c);
60
61 // Fix for bug 4212593 The Toolkit.createCustomCursor does not
62 // check absence of the image of cursor
63 // If the image is invalid, the cursor will be hidden (made completely
64 // transparent). In this case, getBestCursorSize() will adjust negative w and h,
65 // but we need to set the hotspot inside the image here.
66 if (tracker.isErrorAny() || width < 0 || height < 0) {
67 fHotspot.x = fHotspot.y = 0;
68 isImageOk = false;
69 } else {
70 isImageOk = true;
71 }
72
73 // Scale image to nearest supported size
74 final Dimension nativeSize = toolkit.getBestCursorSize(width, height);
75 if (nativeSize.width != width || nativeSize.height != height) {
76 fImage = fImage.getScaledInstance(nativeSize.width, nativeSize.height, Image.SCALE_DEFAULT);
77 width = nativeSize.width;
78 height = nativeSize.height;
79 }
80
81 // NOTE: this was removed for 3169146, but in 1.5 the JCK tests for an exception and fails if one isn't thrown.
82 // See what JBuilder does.
83 // Verify that the hotspot is within cursor bounds.
84 if (fHotspot.x >= width || fHotspot.y >= height || fHotspot.x < 0 || fHotspot.y < 0) {
85 throw new IndexOutOfBoundsException("invalid hotSpot");
86 }
87
88 // Must normalize the hotspot
89 if (fHotspot.x >= width) {
90 fHotspot.x = width - 1; // it is zero based.
97 fHotspot.y = 0;
98 }
99 }
100
101 public static Dimension getBestCursorSize(final int preferredWidth, final int preferredHeight) {
102 // With Panther, cursors have no limit on their size. So give the client their
103 // preferred size, but no larger than half the dimensions of the main screen
104 // This will allow large cursors, but not cursors so large that they cover the
105 // screen. Since solaris nor windows allow cursors this big, this shouldn't be
106 // a limitation.
107 // JCK triggers an overflow in the int -- if we get a bizarre value normalize it.
108 final Dimension maxCursorSize = getMaxCursorSize();
109 final Dimension d = new Dimension(Math.max(1, Math.abs(preferredWidth)), Math.max(1, Math.abs(preferredHeight)));
110 return new Dimension(Math.min(d.width, maxCursorSize.width), Math.min(d.height, maxCursorSize.height));
111 }
112
113 // Called from native when the cursor is set
114 // Returns long array of [NSImage ptr, x hotspot, y hotspot]
115 CImage fCImage;
116 long getImageData() {
117 if (fCImage != null) {
118 return fCImage.ptr;
119 }
120
121 if (isImageOk) {
122 try {
123 fCImage = CImage.getCreator().createFromImage(fImage);
124
125 if (fCImage == null) {
126 isImageOk = false;
127 return 0L;
128 } else {
129 return fCImage.ptr;
130 }
131 } catch (IllegalArgumentException iae) {
132 // Silently return null - we want to hide cursor by providing an empty
133 // ByteArray or just null
134 return 0L;
135 }
136 }
137
138 return 0L;
139 }
140
141 Point getHotSpot() {
142 return fHotspot;
143 }
144 }
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