001: /*
002:
003: ============================================================================
004: The Apache Software License, Version 1.1
005: ============================================================================
006:
007: Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
008:
009: Redistribution and use in source and binary forms, with or without modifica-
010: tion, are permitted provided that the following conditions are met:
011:
012: 1. Redistributions of source code must retain the above copyright notice,
013: this list of conditions and the following disclaimer.
014:
015: 2. Redistributions in binary form must reproduce the above copyright notice,
016: this list of conditions and the following disclaimer in the documentation
017: and/or other materials provided with the distribution.
018:
019: 3. The end-user documentation included with the redistribution, if any, must
020: include the following acknowledgment: "This product includes software
021: developed by the Apache Software Foundation (http://www.apache.org/)."
022: Alternately, this acknowledgment may appear in the software itself, if
023: and wherever such third-party acknowledgments normally appear.
024:
025: 4. The names "Batik" and "Apache Software Foundation" must not be
026: used to endorse or promote products derived from this software without
027: prior written permission. For written permission, please contact
028: apache@apache.org.
029:
030: 5. Products derived from this software may not be called "Apache", nor may
031: "Apache" appear in their name, without prior written permission of the
032: Apache Software Foundation.
033:
034: THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
035: INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
036: FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
037: APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
038: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
039: DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
040: OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
041: ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
042: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
043: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
044:
045: This software consists of voluntary contributions made by many individuals
046: on behalf of the Apache Software Foundation. For more information on the
047: Apache Software Foundation, please see <http://www.apache.org/>.
048:
049: */
050:
051: package org.apache.batik.css.engine;
052:
053: import org.apache.batik.css.engine.value.Value;
054: import org.apache.batik.util.ParsedURL;
055: import org.w3c.dom.Element;
056:
057: /**
058: * This interface allows the user of a CSSEngine to provide contextual
059: * informations.
060: *
061: * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
062: * @version $Id$
063: */
064: public interface CSSContext {
065:
066: /**
067: * Returns the Value corresponding to the given system color.
068: */
069: Value getSystemColor(String ident);
070:
071: /**
072: * Returns the value corresponding to the default font-family.
073: */
074: Value getDefaultFontFamily();
075:
076: /**
077: * Returns a lighter font-weight.
078: */
079: float getLighterFontWeight(float f);
080:
081: /**
082: * Returns a bolder font-weight.
083: */
084: float getBolderFontWeight(float f);
085:
086: /**
087: * Returns the size of a px CSS unit in millimeters.
088: */
089: float getPixelUnitToMillimeter();
090:
091: /**
092: * Returns the size of a px CSS unit in millimeters.
093: * This will be removed after next release.
094: * @see #getPixelUnitToMillimeter()
095: */
096: float getPixelToMillimeter();
097:
098: /**
099: * Returns the medium font size.
100: */
101: float getMediumFontSize();
102:
103: /**
104: * Returns the width of the block which directly contains the
105: * given element.
106: */
107: float getBlockWidth(Element elt);
108:
109: /**
110: * Returns the height of the block which directly contains the
111: * given element.
112: */
113: float getBlockHeight(Element elt);
114:
115: /**
116: * This method should throw a SecurityException if the resource
117: * found at url and referenced from docURL should not be loaded.
118: *
119: * @param scriptURL url for the script, as defined in
120: * the script's xlink:href attribute. If that
121: * attribute was empty, then this parameter should
122: * be null
123: * @param docURL url for the document into which the
124: * script was found.
125: */
126: public void checkLoadExternalResource(ParsedURL resourceURL,
127: ParsedURL docURL) throws SecurityException;
128:
129: /**
130: * Returns true if the document is dynamic, false otherwise.
131: */
132: public boolean isDynamic();
133:
134: /**
135: * Returns true if the document is interactive, false otherwise.
136: */
137: public boolean isInteractive();
138: }
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