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 java.awt.image;
27
28 import java.awt.Transparency;
29 import java.awt.color.ColorSpace;
30 import java.math.BigInteger;
31
32 /**
33 * The {@code IndexColorModel} class is a {@code ColorModel}
34 * class that works with pixel values consisting of a
35 * single sample that is an index into a fixed colormap in the default
36 * sRGB color space. The colormap specifies red, green, blue, and
37 * optional alpha components corresponding to each index. All components
38 * are represented in the colormap as 8-bit unsigned integral values.
39 * Some constructors allow the caller to specify "holes" in the colormap
40 * by indicating which colormap entries are valid and which represent
41 * unusable colors via the bits set in a {@code BigInteger} object.
42 * This color model is similar to an X11 PseudoColor visual.
43 * <p>
44 * Some constructors provide a means to specify an alpha component
45 * for each pixel in the colormap, while others either provide no
46 * such means or, in some cases, a flag to indicate whether the
47 * colormap data contains alpha values. If no alpha is supplied to
48 * the constructor, an opaque alpha component (alpha = 1.0) is
49 * assumed for each entry.
50 * An optional transparent pixel value can be supplied that indicates a
1514 * longer referenced.
1515 */
1516 public void finalize() {
1517 }
1518
1519 /**
1520 * Returns the {@code String} representation of the contents of
1521 * this {@code ColorModel} object.
1522 * @return a {@code String} representing the contents of this
1523 * {@code ColorModel} object.
1524 */
1525 public String toString() {
1526 return new String("IndexColorModel: #pixelBits = "+pixel_bits
1527 + " numComponents = "+numComponents
1528 + " color space = "+colorSpace
1529 + " transparency = "+transparency
1530 + " transIndex = "+transparent_index
1531 + " has alpha = "+supportsAlpha
1532 + " isAlphaPre = "+isAlphaPremultiplied
1533 );
1534 }
1535 }
|
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 java.awt.image;
27
28 import java.awt.Transparency;
29 import java.awt.color.ColorSpace;
30 import java.math.BigInteger;
31 import java.util.Arrays;
32 import java.util.Objects;
33
34 /**
35 * The {@code IndexColorModel} class is a {@code ColorModel}
36 * class that works with pixel values consisting of a
37 * single sample that is an index into a fixed colormap in the default
38 * sRGB color space. The colormap specifies red, green, blue, and
39 * optional alpha components corresponding to each index. All components
40 * are represented in the colormap as 8-bit unsigned integral values.
41 * Some constructors allow the caller to specify "holes" in the colormap
42 * by indicating which colormap entries are valid and which represent
43 * unusable colors via the bits set in a {@code BigInteger} object.
44 * This color model is similar to an X11 PseudoColor visual.
45 * <p>
46 * Some constructors provide a means to specify an alpha component
47 * for each pixel in the colormap, while others either provide no
48 * such means or, in some cases, a flag to indicate whether the
49 * colormap data contains alpha values. If no alpha is supplied to
50 * the constructor, an opaque alpha component (alpha = 1.0) is
51 * assumed for each entry.
52 * An optional transparent pixel value can be supplied that indicates a
1516 * longer referenced.
1517 */
1518 public void finalize() {
1519 }
1520
1521 /**
1522 * Returns the {@code String} representation of the contents of
1523 * this {@code ColorModel} object.
1524 * @return a {@code String} representing the contents of this
1525 * {@code ColorModel} object.
1526 */
1527 public String toString() {
1528 return new String("IndexColorModel: #pixelBits = "+pixel_bits
1529 + " numComponents = "+numComponents
1530 + " color space = "+colorSpace
1531 + " transparency = "+transparency
1532 + " transIndex = "+transparent_index
1533 + " has alpha = "+supportsAlpha
1534 + " isAlphaPre = "+isAlphaPremultiplied
1535 );
1536 }
1537
1538 /**
1539 * Tests if the specified {@code Object} is an instance
1540 * of {@code IndexColorModel} and equals this
1541 * {@code IndexColorModel}.
1542 * @param obj the {@code Object} to test for equality
1543 * @return {@code true} if the specified {@code Object}
1544 * is an instance of {@code IndexColorModel} and equals this
1545 * {@code IndexColorModel}; {@code false} otherwise.
1546 */
1547 @Override
1548 public boolean equals(Object obj) {
1549
1550 IndexColorModel cm = (IndexColorModel) obj;
1551 if (this == cm) {
1552 return true;
1553 }
1554
1555 if (!super.equals(obj)) {
1556 return false;
1557 }
1558
1559 if (map_size != cm.map_size ||
1560 transparent_index != cm.transparent_index)
1561 {
1562 return false;
1563 }
1564
1565 // verify whether we have to check equality of all bits in validBits
1566 boolean testValidBits;
1567 if (validBits == cm.validBits) {
1568 testValidBits = false;
1569 } else if (validBits == null || cm.validBits == null) {
1570 return false;
1571 } else if (validBits.equals(cm.validBits)) {
1572 testValidBits = false;
1573 } else {
1574 testValidBits = true;
1575 }
1576
1577 if (testValidBits) {
1578 for (int i = 0; i < map_size; i++) {
1579 if (rgb[i] != cm.rgb[i] ||
1580 validBits.testBit(i) != cm.validBits.testBit(i))
1581 {
1582 return false;
1583 }
1584 }
1585 } else {
1586 for (int i = 0; i < map_size; i++) {
1587 if (rgb[i] != cm.rgb[i]) {
1588 return false;
1589 }
1590 }
1591 }
1592 return true;
1593 }
1594
1595 /**
1596 * Returns the hash code for IndexColorModel.
1597 *
1598 * @return a hash code for IndexColorModel
1599 */
1600 @Override
1601 public int hashCode() {
1602 int hash = 7;
1603 hash = 43 * hash + super.hashCode();
1604 hash = 43 * hash + Arrays.hashCode(this.rgb);
1605 hash = 43 * hash + this.map_size;
1606 hash = 43 * hash + this.transparent_index;
1607 hash = 43 * hash + Objects.hashCode(this.validBits);
1608 return hash;
1609 }
1610 }
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