001: /*
002: * Copyright (c) 2007, intarsys consulting GmbH
003: *
004: * Redistribution and use in source and binary forms, with or without
005: * modification, are permitted provided that the following conditions are met:
006: *
007: * - Redistributions of source code must retain the above copyright notice,
008: * this list of conditions and the following disclaimer.
009: *
010: * - Redistributions in binary form must reproduce the above copyright notice,
011: * this list of conditions and the following disclaimer in the documentation
012: * and/or other materials provided with the distribution.
013: *
014: * - Neither the name of intarsys nor the names of its contributors may be used
015: * to endorse or promote products derived from this software without specific
016: * prior written permission.
017: *
018: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
019: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
020: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
021: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
022: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
023: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
024: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
025: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
026: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
027: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
028: * POSSIBILITY OF SUCH DAMAGE.
029: */
030: package de.intarsys.pdf.pd;
031:
032: import de.intarsys.pdf.cos.COSBasedObject;
033: import de.intarsys.pdf.cos.COSDictionary;
034: import de.intarsys.pdf.cos.COSName;
035: import de.intarsys.pdf.cos.COSObject;
036: import de.intarsys.pdf.cos.COSRuntimeException;
037: import de.intarsys.pdf.cos.COSStream;
038:
039: /**
040: * A pattern to be used when filling a shape.
041: *
042: */
043: public abstract class PDPattern extends PDObject {
044: /**
045: * The meta class implementation
046: */
047: static public class MetaClass extends PDObject.MetaClass {
048: protected MetaClass(Class paramInstanceClass) {
049: super (paramInstanceClass);
050: }
051:
052: public Class getRootClass() {
053: return PDPattern.class;
054: }
055:
056: protected COSBasedObject.MetaClass doDetermineClass(
057: COSObject object) {
058: COSDictionary dictionary;
059: int patternType;
060:
061: if (object instanceof COSStream) {
062: dictionary = ((COSStream) object).getDict();
063: } else {
064: dictionary = object.asDictionary();
065: }
066: patternType = dictionary.get(DK_PatternType).asInteger()
067: .intValue();
068:
069: switch (patternType) {
070: case PATTERN_TYPE_TILING:
071: return PDTilingPattern.META;
072: case PATTERN_TYPE_SHADING:
073: return PDShadingPattern.META;
074: default:
075: object.handleException(new COSRuntimeException(
076: "unsupported pattern type " + patternType));
077: return null;
078: }
079: }
080: }
081:
082: public static final COSName DK_PatternType = COSName
083: .constant("PatternType"); //$NON-NLS-1$
084:
085: static public final COSName CN_Type_Pattern = COSName
086: .constant("Pattern"); //$NON-NLS-1$
087:
088: /** The meta class instance */
089: static public final MetaClass META = new MetaClass(MetaClass.class
090: .getDeclaringClass());
091:
092: public static final int PATTERN_TYPE_SHADING = 2;
093:
094: public static final int PATTERN_TYPE_TILING = 1;
095:
096: protected PDPattern(COSObject object) {
097: super (object);
098: }
099:
100: public abstract int getPatternType();
101:
102: /*
103: * (non-Javadoc)
104: *
105: * @see de.intarsys.pdf.pd.PDObject#cosGetExpectedType()
106: */
107: protected COSName cosGetExpectedType() {
108: return CN_Type_Pattern;
109: }
110: }
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