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3405 lines
126 KiB
3405 lines
126 KiB
/*
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* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package javax.swing.text.html;
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import java.awt.Color;
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import java.awt.Font;
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import java.awt.GraphicsEnvironment;
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import java.awt.Toolkit;
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import java.awt.HeadlessException;
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import java.awt.Image;
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import java.io.*;
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import java.lang.reflect.Method;
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import java.net.URL;
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import java.net.MalformedURLException;
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import java.util.Enumeration;
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import java.util.Hashtable;
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import java.util.Vector;
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import java.util.Locale;
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import javax.swing.ImageIcon;
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import javax.swing.SizeRequirements;
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import javax.swing.text.*;
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/**
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* Defines a set of
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* <a href="http://www.w3.org/TR/REC-CSS1">CSS attributes</a>
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* as a typesafe enumeration. The HTML View implementations use
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* CSS attributes to determine how they will render. This also defines
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* methods to map between CSS/HTML/StyleConstants. Any shorthand
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* properties, such as font, are mapped to the intrinsic properties.
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* <p>The following describes the CSS properties that are supported by the
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* rendering engine:
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* <ul><li>font-family
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* <li>font-style
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* <li>font-size (supports relative units)
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* <li>font-weight
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* <li>font
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* <li>color
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* <li>background-color (with the exception of transparent)
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* <li>background-image
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* <li>background-repeat
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* <li>background-position
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* <li>background
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* <li>text-decoration (with the exception of blink and overline)
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* <li>vertical-align (only sup and super)
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* <li>text-align (justify is treated as center)
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* <li>margin-top
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* <li>margin-right
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* <li>margin-bottom
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* <li>margin-left
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* <li>margin
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* <li>padding-top
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* <li>padding-right
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* <li>padding-bottom
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* <li>padding-left
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* <li>padding
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* <li>border-top-style
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* <li>border-right-style
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* <li>border-bottom-style
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* <li>border-left-style
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* <li>border-style (only supports inset, outset and none)
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* <li>border-top-color
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* <li>border-right-color
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* <li>border-bottom-color
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* <li>border-left-color
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* <li>border-color
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* <li>list-style-image
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* <li>list-style-type
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* <li>list-style-position
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* </ul>
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* The following are modeled, but currently not rendered.
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* <ul><li>font-variant
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* <li>background-attachment (background always treated as scroll)
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* <li>word-spacing
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* <li>letter-spacing
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* <li>text-indent
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* <li>text-transform
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* <li>line-height
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* <li>border-top-width (this is used to indicate if a border should be used)
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* <li>border-right-width
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* <li>border-bottom-width
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* <li>border-left-width
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* <li>border-width
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* <li>border-top
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* <li>border-right
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* <li>border-bottom
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* <li>border-left
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* <li>border
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* <li>width
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* <li>height
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* <li>float
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* <li>clear
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* <li>display
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* <li>white-space
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* <li>list-style
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* </ul>
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* <p><b>Note: for the time being we do not fully support relative units,
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* unless noted, so that
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* p { margin-top: 10% } will be treated as if no margin-top was specified.</b>
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*
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* @author Timothy Prinzing
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* @author Scott Violet
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* @see StyleSheet
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*/
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public class CSS implements Serializable {
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/**
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* Definitions to be used as a key on AttributeSet's
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* that might hold CSS attributes. Since this is a
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* closed set (i.e. defined exactly by the specification),
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* it is final and cannot be extended.
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*/
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public static final class Attribute {
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private Attribute(String name, String defaultValue, boolean inherited) {
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this.name = name;
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this.defaultValue = defaultValue;
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this.inherited = inherited;
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}
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/**
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* The string representation of the attribute. This
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* should exactly match the string specified in the
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* CSS specification.
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*/
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public String toString() {
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return name;
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}
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/**
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* Fetch the default value for the attribute.
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* If there is no default value (such as for
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* composite attributes), null will be returned.
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*/
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public String getDefaultValue() {
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return defaultValue;
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}
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/**
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* Indicates if the attribute should be inherited
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* from the parent or not.
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*/
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public boolean isInherited() {
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return inherited;
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}
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private String name;
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private String defaultValue;
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private boolean inherited;
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public static final Attribute BACKGROUND =
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new Attribute("background", null, false);
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public static final Attribute BACKGROUND_ATTACHMENT =
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new Attribute("background-attachment", "scroll", false);
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public static final Attribute BACKGROUND_COLOR =
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new Attribute("background-color", "transparent", false);
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public static final Attribute BACKGROUND_IMAGE =
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new Attribute("background-image", "none", false);
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public static final Attribute BACKGROUND_POSITION =
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new Attribute("background-position", null, false);
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public static final Attribute BACKGROUND_REPEAT =
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new Attribute("background-repeat", "repeat", false);
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public static final Attribute BORDER =
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new Attribute("border", null, false);
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public static final Attribute BORDER_BOTTOM =
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new Attribute("border-bottom", null, false);
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public static final Attribute BORDER_BOTTOM_COLOR =
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new Attribute("border-bottom-color", null, false);
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public static final Attribute BORDER_BOTTOM_STYLE =
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new Attribute("border-bottom-style", "none", false);
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public static final Attribute BORDER_BOTTOM_WIDTH =
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new Attribute("border-bottom-width", "medium", false);
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public static final Attribute BORDER_COLOR =
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new Attribute("border-color", null, false);
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public static final Attribute BORDER_LEFT =
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new Attribute("border-left", null, false);
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public static final Attribute BORDER_LEFT_COLOR =
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new Attribute("border-left-color", null, false);
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public static final Attribute BORDER_LEFT_STYLE =
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new Attribute("border-left-style", "none", false);
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public static final Attribute BORDER_LEFT_WIDTH =
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new Attribute("border-left-width", "medium", false);
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public static final Attribute BORDER_RIGHT =
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new Attribute("border-right", null, false);
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public static final Attribute BORDER_RIGHT_COLOR =
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new Attribute("border-right-color", null, false);
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public static final Attribute BORDER_RIGHT_STYLE =
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new Attribute("border-right-style", "none", false);
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public static final Attribute BORDER_RIGHT_WIDTH =
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new Attribute("border-right-width", "medium", false);
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public static final Attribute BORDER_STYLE =
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new Attribute("border-style", "none", false);
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public static final Attribute BORDER_TOP =
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new Attribute("border-top", null, false);
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public static final Attribute BORDER_TOP_COLOR =
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new Attribute("border-top-color", null, false);
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public static final Attribute BORDER_TOP_STYLE =
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new Attribute("border-top-style", "none", false);
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public static final Attribute BORDER_TOP_WIDTH =
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new Attribute("border-top-width", "medium", false);
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public static final Attribute BORDER_WIDTH =
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new Attribute("border-width", "medium", false);
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public static final Attribute CLEAR =
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new Attribute("clear", "none", false);
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public static final Attribute COLOR =
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new Attribute("color", "black", true);
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public static final Attribute DISPLAY =
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new Attribute("display", "block", false);
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public static final Attribute FLOAT =
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new Attribute("float", "none", false);
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public static final Attribute FONT =
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new Attribute("font", null, true);
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public static final Attribute FONT_FAMILY =
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new Attribute("font-family", null, true);
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public static final Attribute FONT_SIZE =
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new Attribute("font-size", "medium", true);
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public static final Attribute FONT_STYLE =
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new Attribute("font-style", "normal", true);
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public static final Attribute FONT_VARIANT =
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new Attribute("font-variant", "normal", true);
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public static final Attribute FONT_WEIGHT =
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new Attribute("font-weight", "normal", true);
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public static final Attribute HEIGHT =
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new Attribute("height", "auto", false);
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public static final Attribute LETTER_SPACING =
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new Attribute("letter-spacing", "normal", true);
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public static final Attribute LINE_HEIGHT =
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new Attribute("line-height", "normal", true);
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public static final Attribute LIST_STYLE =
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new Attribute("list-style", null, true);
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public static final Attribute LIST_STYLE_IMAGE =
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new Attribute("list-style-image", "none", true);
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public static final Attribute LIST_STYLE_POSITION =
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new Attribute("list-style-position", "outside", true);
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public static final Attribute LIST_STYLE_TYPE =
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new Attribute("list-style-type", "disc", true);
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public static final Attribute MARGIN =
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new Attribute("margin", null, false);
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public static final Attribute MARGIN_BOTTOM =
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new Attribute("margin-bottom", "0", false);
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public static final Attribute MARGIN_LEFT =
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new Attribute("margin-left", "0", false);
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public static final Attribute MARGIN_RIGHT =
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new Attribute("margin-right", "0", false);
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/*
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* made up css attributes to describe orientation depended
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* margins. used for <dir>, <menu>, <ul> etc. see
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* 5088268 for more details
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*/
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static final Attribute MARGIN_LEFT_LTR =
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new Attribute("margin-left-ltr",
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Integer.toString(Integer.MIN_VALUE), false);
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static final Attribute MARGIN_LEFT_RTL =
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new Attribute("margin-left-rtl",
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Integer.toString(Integer.MIN_VALUE), false);
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static final Attribute MARGIN_RIGHT_LTR =
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new Attribute("margin-right-ltr",
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Integer.toString(Integer.MIN_VALUE), false);
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static final Attribute MARGIN_RIGHT_RTL =
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new Attribute("margin-right-rtl",
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Integer.toString(Integer.MIN_VALUE), false);
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public static final Attribute MARGIN_TOP =
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new Attribute("margin-top", "0", false);
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public static final Attribute PADDING =
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new Attribute("padding", null, false);
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public static final Attribute PADDING_BOTTOM =
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new Attribute("padding-bottom", "0", false);
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public static final Attribute PADDING_LEFT =
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new Attribute("padding-left", "0", false);
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public static final Attribute PADDING_RIGHT =
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new Attribute("padding-right", "0", false);
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public static final Attribute PADDING_TOP =
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new Attribute("padding-top", "0", false);
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public static final Attribute TEXT_ALIGN =
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new Attribute("text-align", null, true);
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public static final Attribute TEXT_DECORATION =
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new Attribute("text-decoration", "none", true);
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public static final Attribute TEXT_INDENT =
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new Attribute("text-indent", "0", true);
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public static final Attribute TEXT_TRANSFORM =
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new Attribute("text-transform", "none", true);
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public static final Attribute VERTICAL_ALIGN =
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new Attribute("vertical-align", "baseline", false);
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public static final Attribute WORD_SPACING =
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new Attribute("word-spacing", "normal", true);
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public static final Attribute WHITE_SPACE =
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new Attribute("white-space", "normal", true);
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public static final Attribute WIDTH =
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new Attribute("width", "auto", false);
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/*public*/ static final Attribute BORDER_SPACING =
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new Attribute("border-spacing", "0", true);
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/*public*/ static final Attribute CAPTION_SIDE =
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new Attribute("caption-side", "left", true);
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// All possible CSS attribute keys.
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static final Attribute[] allAttributes = {
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BACKGROUND, BACKGROUND_ATTACHMENT, BACKGROUND_COLOR,
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BACKGROUND_IMAGE, BACKGROUND_POSITION, BACKGROUND_REPEAT,
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BORDER, BORDER_BOTTOM, BORDER_BOTTOM_WIDTH, BORDER_COLOR,
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BORDER_LEFT, BORDER_LEFT_WIDTH, BORDER_RIGHT, BORDER_RIGHT_WIDTH,
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BORDER_STYLE, BORDER_TOP, BORDER_TOP_WIDTH, BORDER_WIDTH,
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BORDER_TOP_STYLE, BORDER_RIGHT_STYLE, BORDER_BOTTOM_STYLE,
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BORDER_LEFT_STYLE,
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BORDER_TOP_COLOR, BORDER_RIGHT_COLOR, BORDER_BOTTOM_COLOR,
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BORDER_LEFT_COLOR,
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CLEAR, COLOR, DISPLAY, FLOAT, FONT, FONT_FAMILY, FONT_SIZE,
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FONT_STYLE, FONT_VARIANT, FONT_WEIGHT, HEIGHT, LETTER_SPACING,
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LINE_HEIGHT, LIST_STYLE, LIST_STYLE_IMAGE, LIST_STYLE_POSITION,
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LIST_STYLE_TYPE, MARGIN, MARGIN_BOTTOM, MARGIN_LEFT, MARGIN_RIGHT,
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MARGIN_TOP, PADDING, PADDING_BOTTOM, PADDING_LEFT, PADDING_RIGHT,
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PADDING_TOP, TEXT_ALIGN, TEXT_DECORATION, TEXT_INDENT, TEXT_TRANSFORM,
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VERTICAL_ALIGN, WORD_SPACING, WHITE_SPACE, WIDTH,
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BORDER_SPACING, CAPTION_SIDE,
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MARGIN_LEFT_LTR, MARGIN_LEFT_RTL, MARGIN_RIGHT_LTR, MARGIN_RIGHT_RTL
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};
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private static final Attribute[] ALL_MARGINS =
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{ MARGIN_TOP, MARGIN_RIGHT, MARGIN_BOTTOM, MARGIN_LEFT };
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private static final Attribute[] ALL_PADDING =
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{ PADDING_TOP, PADDING_RIGHT, PADDING_BOTTOM, PADDING_LEFT };
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private static final Attribute[] ALL_BORDER_WIDTHS =
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{ BORDER_TOP_WIDTH, BORDER_RIGHT_WIDTH, BORDER_BOTTOM_WIDTH,
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BORDER_LEFT_WIDTH };
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private static final Attribute[] ALL_BORDER_STYLES =
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{ BORDER_TOP_STYLE, BORDER_RIGHT_STYLE, BORDER_BOTTOM_STYLE,
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BORDER_LEFT_STYLE };
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private static final Attribute[] ALL_BORDER_COLORS =
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{ BORDER_TOP_COLOR, BORDER_RIGHT_COLOR, BORDER_BOTTOM_COLOR,
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BORDER_LEFT_COLOR };
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}
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static final class Value {
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private Value(String name) {
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this.name = name;
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}
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/**
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* The string representation of the attribute. This
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* should exactly match the string specified in the
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* CSS specification.
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*/
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public String toString() {
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return name;
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}
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static final Value INHERITED = new Value("inherited");
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static final Value NONE = new Value("none");
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static final Value HIDDEN = new Value("hidden");
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static final Value DOTTED = new Value("dotted");
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static final Value DASHED = new Value("dashed");
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static final Value SOLID = new Value("solid");
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static final Value DOUBLE = new Value("double");
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static final Value GROOVE = new Value("groove");
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static final Value RIDGE = new Value("ridge");
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static final Value INSET = new Value("inset");
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static final Value OUTSET = new Value("outset");
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// Lists.
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static final Value DISC = new Value("disc");
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static final Value CIRCLE = new Value("circle");
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static final Value SQUARE = new Value("square");
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static final Value DECIMAL = new Value("decimal");
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static final Value LOWER_ROMAN = new Value("lower-roman");
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static final Value UPPER_ROMAN = new Value("upper-roman");
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static final Value LOWER_ALPHA = new Value("lower-alpha");
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static final Value UPPER_ALPHA = new Value("upper-alpha");
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// background-repeat
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static final Value BACKGROUND_NO_REPEAT = new Value("no-repeat");
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static final Value BACKGROUND_REPEAT = new Value("repeat");
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static final Value BACKGROUND_REPEAT_X = new Value("repeat-x");
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static final Value BACKGROUND_REPEAT_Y = new Value("repeat-y");
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// background-attachment
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static final Value BACKGROUND_SCROLL = new Value("scroll");
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static final Value BACKGROUND_FIXED = new Value("fixed");
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private String name;
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static final Value[] allValues = {
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INHERITED, NONE, DOTTED, DASHED, SOLID, DOUBLE, GROOVE,
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RIDGE, INSET, OUTSET, DISC, CIRCLE, SQUARE, DECIMAL,
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LOWER_ROMAN, UPPER_ROMAN, LOWER_ALPHA, UPPER_ALPHA,
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BACKGROUND_NO_REPEAT, BACKGROUND_REPEAT,
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BACKGROUND_REPEAT_X, BACKGROUND_REPEAT_Y,
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BACKGROUND_FIXED, BACKGROUND_FIXED
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};
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}
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public CSS() {
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baseFontSize = baseFontSizeIndex + 1;
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// setup the css conversion table
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valueConvertor = new Hashtable<Object, Object>();
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valueConvertor.put(CSS.Attribute.FONT_SIZE, new FontSize());
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valueConvertor.put(CSS.Attribute.FONT_FAMILY, new FontFamily());
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valueConvertor.put(CSS.Attribute.FONT_WEIGHT, new FontWeight());
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Object bs = new BorderStyle();
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valueConvertor.put(CSS.Attribute.BORDER_TOP_STYLE, bs);
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valueConvertor.put(CSS.Attribute.BORDER_RIGHT_STYLE, bs);
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valueConvertor.put(CSS.Attribute.BORDER_BOTTOM_STYLE, bs);
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valueConvertor.put(CSS.Attribute.BORDER_LEFT_STYLE, bs);
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Object cv = new ColorValue();
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valueConvertor.put(CSS.Attribute.COLOR, cv);
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valueConvertor.put(CSS.Attribute.BACKGROUND_COLOR, cv);
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valueConvertor.put(CSS.Attribute.BORDER_TOP_COLOR, cv);
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valueConvertor.put(CSS.Attribute.BORDER_RIGHT_COLOR, cv);
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valueConvertor.put(CSS.Attribute.BORDER_BOTTOM_COLOR, cv);
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valueConvertor.put(CSS.Attribute.BORDER_LEFT_COLOR, cv);
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Object lv = new LengthValue();
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valueConvertor.put(CSS.Attribute.MARGIN_TOP, lv);
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valueConvertor.put(CSS.Attribute.MARGIN_BOTTOM, lv);
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valueConvertor.put(CSS.Attribute.MARGIN_LEFT, lv);
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valueConvertor.put(CSS.Attribute.MARGIN_LEFT_LTR, lv);
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valueConvertor.put(CSS.Attribute.MARGIN_LEFT_RTL, lv);
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valueConvertor.put(CSS.Attribute.MARGIN_RIGHT, lv);
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valueConvertor.put(CSS.Attribute.MARGIN_RIGHT_LTR, lv);
|
|
valueConvertor.put(CSS.Attribute.MARGIN_RIGHT_RTL, lv);
|
|
valueConvertor.put(CSS.Attribute.PADDING_TOP, lv);
|
|
valueConvertor.put(CSS.Attribute.PADDING_BOTTOM, lv);
|
|
valueConvertor.put(CSS.Attribute.PADDING_LEFT, lv);
|
|
valueConvertor.put(CSS.Attribute.PADDING_RIGHT, lv);
|
|
Object bv = new BorderWidthValue(null, 0);
|
|
valueConvertor.put(CSS.Attribute.BORDER_TOP_WIDTH, bv);
|
|
valueConvertor.put(CSS.Attribute.BORDER_BOTTOM_WIDTH, bv);
|
|
valueConvertor.put(CSS.Attribute.BORDER_LEFT_WIDTH, bv);
|
|
valueConvertor.put(CSS.Attribute.BORDER_RIGHT_WIDTH, bv);
|
|
Object nlv = new LengthValue(true);
|
|
valueConvertor.put(CSS.Attribute.TEXT_INDENT, nlv);
|
|
valueConvertor.put(CSS.Attribute.WIDTH, lv);
|
|
valueConvertor.put(CSS.Attribute.HEIGHT, lv);
|
|
valueConvertor.put(CSS.Attribute.BORDER_SPACING, lv);
|
|
Object sv = new StringValue();
|
|
valueConvertor.put(CSS.Attribute.FONT_STYLE, sv);
|
|
valueConvertor.put(CSS.Attribute.TEXT_DECORATION, sv);
|
|
valueConvertor.put(CSS.Attribute.TEXT_ALIGN, sv);
|
|
valueConvertor.put(CSS.Attribute.VERTICAL_ALIGN, sv);
|
|
Object valueMapper = new CssValueMapper();
|
|
valueConvertor.put(CSS.Attribute.LIST_STYLE_TYPE,
|
|
valueMapper);
|
|
valueConvertor.put(CSS.Attribute.BACKGROUND_IMAGE,
|
|
new BackgroundImage());
|
|
valueConvertor.put(CSS.Attribute.BACKGROUND_POSITION,
|
|
new BackgroundPosition());
|
|
valueConvertor.put(CSS.Attribute.BACKGROUND_REPEAT,
|
|
valueMapper);
|
|
valueConvertor.put(CSS.Attribute.BACKGROUND_ATTACHMENT,
|
|
valueMapper);
|
|
Object generic = new CssValue();
|
|
int n = CSS.Attribute.allAttributes.length;
|
|
for (int i = 0; i < n; i++) {
|
|
CSS.Attribute key = CSS.Attribute.allAttributes[i];
|
|
if (valueConvertor.get(key) == null) {
|
|
valueConvertor.put(key, generic);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the base font size. <code>sz</code> is a CSS value, and is
|
|
* not necessarily the point size. Use getPointSize to determine the
|
|
* point size corresponding to <code>sz</code>.
|
|
*/
|
|
void setBaseFontSize(int sz) {
|
|
if (sz < 1)
|
|
baseFontSize = 0;
|
|
else if (sz > 7)
|
|
baseFontSize = 7;
|
|
else
|
|
baseFontSize = sz;
|
|
}
|
|
|
|
/**
|
|
* Sets the base font size from the passed in string.
|
|
*/
|
|
void setBaseFontSize(String size) {
|
|
int relSize, absSize, diff;
|
|
|
|
if (size != null) {
|
|
if (size.startsWith("+")) {
|
|
relSize = Integer.valueOf(size.substring(1)).intValue();
|
|
setBaseFontSize(baseFontSize + relSize);
|
|
} else if (size.startsWith("-")) {
|
|
relSize = -Integer.valueOf(size.substring(1)).intValue();
|
|
setBaseFontSize(baseFontSize + relSize);
|
|
} else {
|
|
setBaseFontSize(Integer.valueOf(size).intValue());
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the base font size.
|
|
*/
|
|
int getBaseFontSize() {
|
|
return baseFontSize;
|
|
}
|
|
|
|
/**
|
|
* Parses the CSS property <code>key</code> with value
|
|
* <code>value</code> placing the result in <code>att</code>.
|
|
*/
|
|
void addInternalCSSValue(MutableAttributeSet attr,
|
|
CSS.Attribute key, String value) {
|
|
if (key == CSS.Attribute.FONT) {
|
|
ShorthandFontParser.parseShorthandFont(this, value, attr);
|
|
}
|
|
else if (key == CSS.Attribute.BACKGROUND) {
|
|
ShorthandBackgroundParser.parseShorthandBackground
|
|
(this, value, attr);
|
|
}
|
|
else if (key == CSS.Attribute.MARGIN) {
|
|
ShorthandMarginParser.parseShorthandMargin(this, value, attr,
|
|
CSS.Attribute.ALL_MARGINS);
|
|
}
|
|
else if (key == CSS.Attribute.PADDING) {
|
|
ShorthandMarginParser.parseShorthandMargin(this, value, attr,
|
|
CSS.Attribute.ALL_PADDING);
|
|
}
|
|
else if (key == CSS.Attribute.BORDER_WIDTH) {
|
|
ShorthandMarginParser.parseShorthandMargin(this, value, attr,
|
|
CSS.Attribute.ALL_BORDER_WIDTHS);
|
|
}
|
|
else if (key == CSS.Attribute.BORDER_COLOR) {
|
|
ShorthandMarginParser.parseShorthandMargin(this, value, attr,
|
|
CSS.Attribute.ALL_BORDER_COLORS);
|
|
}
|
|
else if (key == CSS.Attribute.BORDER_STYLE) {
|
|
ShorthandMarginParser.parseShorthandMargin(this, value, attr,
|
|
CSS.Attribute.ALL_BORDER_STYLES);
|
|
}
|
|
else if ((key == CSS.Attribute.BORDER) ||
|
|
(key == CSS.Attribute.BORDER_TOP) ||
|
|
(key == CSS.Attribute.BORDER_RIGHT) ||
|
|
(key == CSS.Attribute.BORDER_BOTTOM) ||
|
|
(key == CSS.Attribute.BORDER_LEFT)) {
|
|
ShorthandBorderParser.parseShorthandBorder(attr, key, value);
|
|
}
|
|
else {
|
|
Object iValue = getInternalCSSValue(key, value);
|
|
if (iValue != null) {
|
|
attr.addAttribute(key, iValue);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the internal CSS representation of <code>value</code> which is
|
|
* a CSS value of the CSS attribute named <code>key</code>. The receiver
|
|
* should not modify <code>value</code>, and the first <code>count</code>
|
|
* strings are valid.
|
|
*/
|
|
Object getInternalCSSValue(CSS.Attribute key, String value) {
|
|
CssValue conv = (CssValue) valueConvertor.get(key);
|
|
Object r = conv.parseCssValue(value);
|
|
return r != null ? r : conv.parseCssValue(key.getDefaultValue());
|
|
}
|
|
|
|
/**
|
|
* Maps from a StyleConstants to a CSS Attribute.
|
|
*/
|
|
Attribute styleConstantsKeyToCSSKey(StyleConstants sc) {
|
|
return styleConstantToCssMap.get(sc);
|
|
}
|
|
|
|
/**
|
|
* Maps from a StyleConstants value to a CSS value.
|
|
*/
|
|
Object styleConstantsValueToCSSValue(StyleConstants sc,
|
|
Object styleValue) {
|
|
Attribute cssKey = styleConstantsKeyToCSSKey(sc);
|
|
if (cssKey != null) {
|
|
CssValue conv = (CssValue)valueConvertor.get(cssKey);
|
|
return conv.fromStyleConstants(sc, styleValue);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Converts the passed in CSS value to a StyleConstants value.
|
|
* <code>key</code> identifies the CSS attribute being mapped.
|
|
*/
|
|
Object cssValueToStyleConstantsValue(StyleConstants key, Object value) {
|
|
if (value instanceof CssValue) {
|
|
return ((CssValue)value).toStyleConstants(key, null);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns the font for the values in the passed in AttributeSet.
|
|
* It is assumed the keys will be CSS.Attribute keys.
|
|
* <code>sc</code> is the StyleContext that will be messaged to get
|
|
* the font once the size, name and style have been determined.
|
|
*/
|
|
Font getFont(StyleContext sc, AttributeSet a, int defaultSize, StyleSheet ss) {
|
|
ss = getStyleSheet(ss);
|
|
int size = getFontSize(a, defaultSize, ss);
|
|
|
|
/*
|
|
* If the vertical alignment is set to either superscirpt or
|
|
* subscript we reduce the font size by 2 points.
|
|
*/
|
|
StringValue vAlignV = (StringValue)a.getAttribute
|
|
(CSS.Attribute.VERTICAL_ALIGN);
|
|
if ((vAlignV != null)) {
|
|
String vAlign = vAlignV.toString();
|
|
if ((vAlign.indexOf("sup") >= 0) ||
|
|
(vAlign.indexOf("sub") >= 0)) {
|
|
size -= 2;
|
|
}
|
|
}
|
|
|
|
FontFamily familyValue = (FontFamily)a.getAttribute
|
|
(CSS.Attribute.FONT_FAMILY);
|
|
String family = (familyValue != null) ? familyValue.getValue() :
|
|
Font.SANS_SERIF;
|
|
int style = Font.PLAIN;
|
|
FontWeight weightValue = (FontWeight) a.getAttribute
|
|
(CSS.Attribute.FONT_WEIGHT);
|
|
if ((weightValue != null) && (weightValue.getValue() > 400)) {
|
|
style |= Font.BOLD;
|
|
}
|
|
Object fs = a.getAttribute(CSS.Attribute.FONT_STYLE);
|
|
if ((fs != null) && (fs.toString().indexOf("italic") >= 0)) {
|
|
style |= Font.ITALIC;
|
|
}
|
|
if (family.equalsIgnoreCase("monospace")) {
|
|
family = Font.MONOSPACED;
|
|
}
|
|
Font f = sc.getFont(family, style, size);
|
|
if (f == null
|
|
|| (f.getFamily().equals(Font.DIALOG)
|
|
&& ! family.equalsIgnoreCase(Font.DIALOG))) {
|
|
family = Font.SANS_SERIF;
|
|
f = sc.getFont(family, style, size);
|
|
}
|
|
return f;
|
|
}
|
|
|
|
static int getFontSize(AttributeSet attr, int defaultSize, StyleSheet ss) {
|
|
// PENDING(prinz) this is a 1.1 based implementation, need to also
|
|
// have a 1.2 version.
|
|
FontSize sizeValue = (FontSize)attr.getAttribute(CSS.Attribute.
|
|
FONT_SIZE);
|
|
|
|
return (sizeValue != null) ? sizeValue.getValue(attr, ss)
|
|
: defaultSize;
|
|
}
|
|
|
|
/**
|
|
* Takes a set of attributes and turn it into a color
|
|
* specification. This might be used to specify things
|
|
* like brighter, more hue, etc.
|
|
* This will return null if there is no value for <code>key</code>.
|
|
*
|
|
* @param key CSS.Attribute identifying where color is stored.
|
|
* @param a the set of attributes
|
|
* @return the color
|
|
*/
|
|
Color getColor(AttributeSet a, CSS.Attribute key) {
|
|
ColorValue cv = (ColorValue) a.getAttribute(key);
|
|
if (cv != null) {
|
|
return cv.getValue();
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns the size of a font from the passed in string.
|
|
*
|
|
* @param size CSS string describing font size
|
|
* @param baseFontSize size to use for relative units.
|
|
*/
|
|
float getPointSize(String size, StyleSheet ss) {
|
|
int relSize, absSize, diff, index;
|
|
ss = getStyleSheet(ss);
|
|
if (size != null) {
|
|
if (size.startsWith("+")) {
|
|
relSize = Integer.valueOf(size.substring(1)).intValue();
|
|
return getPointSize(baseFontSize + relSize, ss);
|
|
} else if (size.startsWith("-")) {
|
|
relSize = -Integer.valueOf(size.substring(1)).intValue();
|
|
return getPointSize(baseFontSize + relSize, ss);
|
|
} else {
|
|
absSize = Integer.valueOf(size).intValue();
|
|
return getPointSize(absSize, ss);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Returns the length of the attribute in <code>a</code> with
|
|
* key <code>key</code>.
|
|
*/
|
|
float getLength(AttributeSet a, CSS.Attribute key, StyleSheet ss) {
|
|
ss = getStyleSheet(ss);
|
|
LengthValue lv = (LengthValue) a.getAttribute(key);
|
|
boolean isW3CLengthUnits = (ss == null) ? false : ss.isW3CLengthUnits();
|
|
float len = (lv != null) ? lv.getValue(isW3CLengthUnits) : 0;
|
|
return len;
|
|
}
|
|
|
|
/**
|
|
* Convert a set of HTML attributes to an equivalent
|
|
* set of CSS attributes.
|
|
*
|
|
* @param htmlAttrSet AttributeSet containing the HTML attributes.
|
|
* @return AttributeSet containing the corresponding CSS attributes.
|
|
* The AttributeSet will be empty if there are no mapping
|
|
* CSS attributes.
|
|
*/
|
|
AttributeSet translateHTMLToCSS(AttributeSet htmlAttrSet) {
|
|
MutableAttributeSet cssAttrSet = new SimpleAttributeSet();
|
|
Element elem = (Element)htmlAttrSet;
|
|
HTML.Tag tag = getHTMLTag(htmlAttrSet);
|
|
if ((tag == HTML.Tag.TD) || (tag == HTML.Tag.TH)) {
|
|
// translate border width into the cells, if it has non-zero value.
|
|
AttributeSet tableAttr = elem.getParentElement().
|
|
getParentElement().getAttributes();
|
|
|
|
int borderWidth = getTableBorder(tableAttr);
|
|
if (borderWidth > 0) {
|
|
// If table contains the BORDER attribute cells should have border width equals 1
|
|
translateAttribute(HTML.Attribute.BORDER, "1", cssAttrSet);
|
|
}
|
|
String pad = (String)tableAttr.getAttribute(HTML.Attribute.CELLPADDING);
|
|
if (pad != null) {
|
|
LengthValue v =
|
|
(LengthValue)getInternalCSSValue(CSS.Attribute.PADDING_TOP, pad);
|
|
v.span = (v.span < 0) ? 0 : v.span;
|
|
cssAttrSet.addAttribute(CSS.Attribute.PADDING_TOP, v);
|
|
cssAttrSet.addAttribute(CSS.Attribute.PADDING_BOTTOM, v);
|
|
cssAttrSet.addAttribute(CSS.Attribute.PADDING_LEFT, v);
|
|
cssAttrSet.addAttribute(CSS.Attribute.PADDING_RIGHT, v);
|
|
}
|
|
}
|
|
if (elem.isLeaf()) {
|
|
translateEmbeddedAttributes(htmlAttrSet, cssAttrSet);
|
|
} else {
|
|
translateAttributes(tag, htmlAttrSet, cssAttrSet);
|
|
}
|
|
if (tag == HTML.Tag.CAPTION) {
|
|
/*
|
|
* Navigator uses ALIGN for caption placement and IE uses VALIGN.
|
|
*/
|
|
Object v = htmlAttrSet.getAttribute(HTML.Attribute.ALIGN);
|
|
if ((v != null) && (v.equals("top") || v.equals("bottom"))) {
|
|
cssAttrSet.addAttribute(CSS.Attribute.CAPTION_SIDE, v);
|
|
cssAttrSet.removeAttribute(CSS.Attribute.TEXT_ALIGN);
|
|
} else {
|
|
v = htmlAttrSet.getAttribute(HTML.Attribute.VALIGN);
|
|
if (v != null) {
|
|
cssAttrSet.addAttribute(CSS.Attribute.CAPTION_SIDE, v);
|
|
}
|
|
}
|
|
}
|
|
return cssAttrSet;
|
|
}
|
|
|
|
private static int getTableBorder(AttributeSet tableAttr) {
|
|
String borderValue = (String) tableAttr.getAttribute(HTML.Attribute.BORDER);
|
|
|
|
if (borderValue == HTML.NULL_ATTRIBUTE_VALUE || "".equals(borderValue)) {
|
|
// Some browsers accept <TABLE BORDER> and <TABLE BORDER=""> with the same semantics as BORDER=1
|
|
return 1;
|
|
}
|
|
|
|
try {
|
|
return Integer.parseInt(borderValue);
|
|
} catch (NumberFormatException e) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
private static final Hashtable<String, Attribute> attributeMap = new Hashtable<String, Attribute>();
|
|
private static final Hashtable<String, Value> valueMap = new Hashtable<String, Value>();
|
|
|
|
/**
|
|
* The hashtable and the static initalization block below,
|
|
* set up a mapping from well-known HTML attributes to
|
|
* CSS attributes. For the most part, there is a 1-1 mapping
|
|
* between the two. However in the case of certain HTML
|
|
* attributes for example HTML.Attribute.VSPACE or
|
|
* HTML.Attribute.HSPACE, end up mapping to two CSS.Attribute's.
|
|
* Therefore, the value associated with each HTML.Attribute.
|
|
* key ends up being an array of CSS.Attribute.* objects.
|
|
*/
|
|
private static final Hashtable<HTML.Attribute, CSS.Attribute[]> htmlAttrToCssAttrMap = new Hashtable<HTML.Attribute, CSS.Attribute[]>(20);
|
|
|
|
/**
|
|
* The hashtable and static initialization that follows sets
|
|
* up a translation from StyleConstants (i.e. the <em>well known</em>
|
|
* attributes) to the associated CSS attributes.
|
|
*/
|
|
private static final Hashtable<Object, Attribute> styleConstantToCssMap = new Hashtable<Object, Attribute>(17);
|
|
/** Maps from HTML value to a CSS value. Used in internal mapping. */
|
|
private static final Hashtable<String, CSS.Value> htmlValueToCssValueMap = new Hashtable<String, CSS.Value>(8);
|
|
/** Maps from CSS value (string) to internal value. */
|
|
private static final Hashtable<String, CSS.Value> cssValueToInternalValueMap = new Hashtable<String, CSS.Value>(13);
|
|
|
|
static {
|
|
// load the attribute map
|
|
for (int i = 0; i < Attribute.allAttributes.length; i++ ) {
|
|
attributeMap.put(Attribute.allAttributes[i].toString(),
|
|
Attribute.allAttributes[i]);
|
|
}
|
|
// load the value map
|
|
for (int i = 0; i < Value.allValues.length; i++ ) {
|
|
valueMap.put(Value.allValues[i].toString(),
|
|
Value.allValues[i]);
|
|
}
|
|
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.COLOR,
|
|
new CSS.Attribute[]{CSS.Attribute.COLOR});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.TEXT,
|
|
new CSS.Attribute[]{CSS.Attribute.COLOR});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.CLEAR,
|
|
new CSS.Attribute[]{CSS.Attribute.CLEAR});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.BACKGROUND,
|
|
new CSS.Attribute[]{CSS.Attribute.BACKGROUND_IMAGE});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.BGCOLOR,
|
|
new CSS.Attribute[]{CSS.Attribute.BACKGROUND_COLOR});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.WIDTH,
|
|
new CSS.Attribute[]{CSS.Attribute.WIDTH});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.HEIGHT,
|
|
new CSS.Attribute[]{CSS.Attribute.HEIGHT});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.BORDER,
|
|
new CSS.Attribute[]{CSS.Attribute.BORDER_TOP_WIDTH, CSS.Attribute.BORDER_RIGHT_WIDTH, CSS.Attribute.BORDER_BOTTOM_WIDTH, CSS.Attribute.BORDER_LEFT_WIDTH});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.CELLPADDING,
|
|
new CSS.Attribute[]{CSS.Attribute.PADDING});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.CELLSPACING,
|
|
new CSS.Attribute[]{CSS.Attribute.BORDER_SPACING});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.MARGINWIDTH,
|
|
new CSS.Attribute[]{CSS.Attribute.MARGIN_LEFT,
|
|
CSS.Attribute.MARGIN_RIGHT});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.MARGINHEIGHT,
|
|
new CSS.Attribute[]{CSS.Attribute.MARGIN_TOP,
|
|
CSS.Attribute.MARGIN_BOTTOM});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.HSPACE,
|
|
new CSS.Attribute[]{CSS.Attribute.PADDING_LEFT,
|
|
CSS.Attribute.PADDING_RIGHT});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.VSPACE,
|
|
new CSS.Attribute[]{CSS.Attribute.PADDING_BOTTOM,
|
|
CSS.Attribute.PADDING_TOP});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.FACE,
|
|
new CSS.Attribute[]{CSS.Attribute.FONT_FAMILY});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.SIZE,
|
|
new CSS.Attribute[]{CSS.Attribute.FONT_SIZE});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.VALIGN,
|
|
new CSS.Attribute[]{CSS.Attribute.VERTICAL_ALIGN});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.ALIGN,
|
|
new CSS.Attribute[]{CSS.Attribute.VERTICAL_ALIGN,
|
|
CSS.Attribute.TEXT_ALIGN,
|
|
CSS.Attribute.FLOAT});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.TYPE,
|
|
new CSS.Attribute[]{CSS.Attribute.LIST_STYLE_TYPE});
|
|
htmlAttrToCssAttrMap.put(HTML.Attribute.NOWRAP,
|
|
new CSS.Attribute[]{CSS.Attribute.WHITE_SPACE});
|
|
|
|
// initialize StyleConstants mapping
|
|
styleConstantToCssMap.put(StyleConstants.FontFamily,
|
|
CSS.Attribute.FONT_FAMILY);
|
|
styleConstantToCssMap.put(StyleConstants.FontSize,
|
|
CSS.Attribute.FONT_SIZE);
|
|
styleConstantToCssMap.put(StyleConstants.Bold,
|
|
CSS.Attribute.FONT_WEIGHT);
|
|
styleConstantToCssMap.put(StyleConstants.Italic,
|
|
CSS.Attribute.FONT_STYLE);
|
|
styleConstantToCssMap.put(StyleConstants.Underline,
|
|
CSS.Attribute.TEXT_DECORATION);
|
|
styleConstantToCssMap.put(StyleConstants.StrikeThrough,
|
|
CSS.Attribute.TEXT_DECORATION);
|
|
styleConstantToCssMap.put(StyleConstants.Superscript,
|
|
CSS.Attribute.VERTICAL_ALIGN);
|
|
styleConstantToCssMap.put(StyleConstants.Subscript,
|
|
CSS.Attribute.VERTICAL_ALIGN);
|
|
styleConstantToCssMap.put(StyleConstants.Foreground,
|
|
CSS.Attribute.COLOR);
|
|
styleConstantToCssMap.put(StyleConstants.Background,
|
|
CSS.Attribute.BACKGROUND_COLOR);
|
|
styleConstantToCssMap.put(StyleConstants.FirstLineIndent,
|
|
CSS.Attribute.TEXT_INDENT);
|
|
styleConstantToCssMap.put(StyleConstants.LeftIndent,
|
|
CSS.Attribute.MARGIN_LEFT);
|
|
styleConstantToCssMap.put(StyleConstants.RightIndent,
|
|
CSS.Attribute.MARGIN_RIGHT);
|
|
styleConstantToCssMap.put(StyleConstants.SpaceAbove,
|
|
CSS.Attribute.MARGIN_TOP);
|
|
styleConstantToCssMap.put(StyleConstants.SpaceBelow,
|
|
CSS.Attribute.MARGIN_BOTTOM);
|
|
styleConstantToCssMap.put(StyleConstants.Alignment,
|
|
CSS.Attribute.TEXT_ALIGN);
|
|
|
|
// HTML->CSS
|
|
htmlValueToCssValueMap.put("disc", CSS.Value.DISC);
|
|
htmlValueToCssValueMap.put("square", CSS.Value.SQUARE);
|
|
htmlValueToCssValueMap.put("circle", CSS.Value.CIRCLE);
|
|
htmlValueToCssValueMap.put("1", CSS.Value.DECIMAL);
|
|
htmlValueToCssValueMap.put("a", CSS.Value.LOWER_ALPHA);
|
|
htmlValueToCssValueMap.put("A", CSS.Value.UPPER_ALPHA);
|
|
htmlValueToCssValueMap.put("i", CSS.Value.LOWER_ROMAN);
|
|
htmlValueToCssValueMap.put("I", CSS.Value.UPPER_ROMAN);
|
|
|
|
// CSS-> internal CSS
|
|
cssValueToInternalValueMap.put("none", CSS.Value.NONE);
|
|
cssValueToInternalValueMap.put("disc", CSS.Value.DISC);
|
|
cssValueToInternalValueMap.put("square", CSS.Value.SQUARE);
|
|
cssValueToInternalValueMap.put("circle", CSS.Value.CIRCLE);
|
|
cssValueToInternalValueMap.put("decimal", CSS.Value.DECIMAL);
|
|
cssValueToInternalValueMap.put("lower-roman", CSS.Value.LOWER_ROMAN);
|
|
cssValueToInternalValueMap.put("upper-roman", CSS.Value.UPPER_ROMAN);
|
|
cssValueToInternalValueMap.put("lower-alpha", CSS.Value.LOWER_ALPHA);
|
|
cssValueToInternalValueMap.put("upper-alpha", CSS.Value.UPPER_ALPHA);
|
|
cssValueToInternalValueMap.put("repeat", CSS.Value.BACKGROUND_REPEAT);
|
|
cssValueToInternalValueMap.put("no-repeat",
|
|
CSS.Value.BACKGROUND_NO_REPEAT);
|
|
cssValueToInternalValueMap.put("repeat-x",
|
|
CSS.Value.BACKGROUND_REPEAT_X);
|
|
cssValueToInternalValueMap.put("repeat-y",
|
|
CSS.Value.BACKGROUND_REPEAT_Y);
|
|
cssValueToInternalValueMap.put("scroll",
|
|
CSS.Value.BACKGROUND_SCROLL);
|
|
cssValueToInternalValueMap.put("fixed",
|
|
CSS.Value.BACKGROUND_FIXED);
|
|
|
|
// Register all the CSS attribute keys for archival/unarchival
|
|
Object[] keys = CSS.Attribute.allAttributes;
|
|
try {
|
|
for (Object key : keys) {
|
|
StyleContext.registerStaticAttributeKey(key);
|
|
}
|
|
} catch (Throwable e) {
|
|
e.printStackTrace();
|
|
}
|
|
|
|
// Register all the CSS Values for archival/unarchival
|
|
keys = CSS.Value.allValues;
|
|
try {
|
|
for (Object key : keys) {
|
|
StyleContext.registerStaticAttributeKey(key);
|
|
}
|
|
} catch (Throwable e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the set of all possible CSS attribute keys.
|
|
*/
|
|
public static Attribute[] getAllAttributeKeys() {
|
|
Attribute[] keys = new Attribute[Attribute.allAttributes.length];
|
|
System.arraycopy(Attribute.allAttributes, 0, keys, 0, Attribute.allAttributes.length);
|
|
return keys;
|
|
}
|
|
|
|
/**
|
|
* Translates a string to a <code>CSS.Attribute</code> object.
|
|
* This will return <code>null</code> if there is no attribute
|
|
* by the given name.
|
|
*
|
|
* @param name the name of the CSS attribute to fetch the
|
|
* typesafe enumeration for
|
|
* @return the <code>CSS.Attribute</code> object,
|
|
* or <code>null</code> if the string
|
|
* doesn't represent a valid attribute key
|
|
*/
|
|
public static final Attribute getAttribute(String name) {
|
|
return attributeMap.get(name);
|
|
}
|
|
|
|
/**
|
|
* Translates a string to a <code>CSS.Value</code> object.
|
|
* This will return <code>null</code> if there is no value
|
|
* by the given name.
|
|
*
|
|
* @param name the name of the CSS value to fetch the
|
|
* typesafe enumeration for
|
|
* @return the <code>CSS.Value</code> object,
|
|
* or <code>null</code> if the string
|
|
* doesn't represent a valid CSS value name; this does
|
|
* not mean that it doesn't represent a valid CSS value
|
|
*/
|
|
static final Value getValue(String name) {
|
|
return valueMap.get(name);
|
|
}
|
|
|
|
|
|
//
|
|
// Conversion related methods/classes
|
|
//
|
|
|
|
/**
|
|
* Returns a URL for the given CSS url string. If relative,
|
|
* <code>base</code> is used as the parent. If a valid URL can not
|
|
* be found, this will not throw a MalformedURLException, instead
|
|
* null will be returned.
|
|
*/
|
|
static URL getURL(URL base, String cssString) {
|
|
if (cssString == null) {
|
|
return null;
|
|
}
|
|
if (cssString.startsWith("url(") &&
|
|
cssString.endsWith(")")) {
|
|
cssString = cssString.substring(4, cssString.length() - 1);
|
|
}
|
|
// Absolute first
|
|
try {
|
|
URL url = new URL(cssString);
|
|
if (url != null) {
|
|
return url;
|
|
}
|
|
} catch (MalformedURLException mue) {
|
|
}
|
|
// Then relative
|
|
if (base != null) {
|
|
// Relative URL, try from base
|
|
try {
|
|
URL url = new URL(base, cssString);
|
|
return url;
|
|
}
|
|
catch (MalformedURLException muee) {
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Converts a type Color to a hex string
|
|
* in the format "#RRGGBB"
|
|
*/
|
|
static String colorToHex(Color color) {
|
|
|
|
String colorstr = "#";
|
|
|
|
// Red
|
|
String str = Integer.toHexString(color.getRed());
|
|
if (str.length() > 2)
|
|
str = str.substring(0, 2);
|
|
else if (str.length() < 2)
|
|
colorstr += "0" + str;
|
|
else
|
|
colorstr += str;
|
|
|
|
// Green
|
|
str = Integer.toHexString(color.getGreen());
|
|
if (str.length() > 2)
|
|
str = str.substring(0, 2);
|
|
else if (str.length() < 2)
|
|
colorstr += "0" + str;
|
|
else
|
|
colorstr += str;
|
|
|
|
// Blue
|
|
str = Integer.toHexString(color.getBlue());
|
|
if (str.length() > 2)
|
|
str = str.substring(0, 2);
|
|
else if (str.length() < 2)
|
|
colorstr += "0" + str;
|
|
else
|
|
colorstr += str;
|
|
|
|
return colorstr;
|
|
}
|
|
|
|
/**
|
|
* Convert a "#FFFFFF" hex string to a Color.
|
|
* If the color specification is bad, an attempt
|
|
* will be made to fix it up.
|
|
*/
|
|
static final Color hexToColor(String value) {
|
|
String digits;
|
|
int n = value.length();
|
|
if (value.startsWith("#")) {
|
|
digits = value.substring(1, Math.min(value.length(), 7));
|
|
} else {
|
|
digits = value;
|
|
}
|
|
String hstr = "0x" + digits;
|
|
Color c;
|
|
try {
|
|
c = Color.decode(hstr);
|
|
} catch (NumberFormatException nfe) {
|
|
c = null;
|
|
}
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* Convert a color string such as "RED" or "#NNNNNN" or "rgb(r, g, b)"
|
|
* to a Color.
|
|
*/
|
|
static Color stringToColor(String str) {
|
|
Color color;
|
|
|
|
if (str == null) {
|
|
return null;
|
|
}
|
|
if (str.length() == 0)
|
|
color = Color.black;
|
|
else if (str.startsWith("rgb(")) {
|
|
color = parseRGB(str);
|
|
}
|
|
else if (str.charAt(0) == '#')
|
|
color = hexToColor(str);
|
|
else if (str.equalsIgnoreCase("Black"))
|
|
color = hexToColor("#000000");
|
|
else if(str.equalsIgnoreCase("Silver"))
|
|
color = hexToColor("#C0C0C0");
|
|
else if(str.equalsIgnoreCase("Gray"))
|
|
color = hexToColor("#808080");
|
|
else if(str.equalsIgnoreCase("White"))
|
|
color = hexToColor("#FFFFFF");
|
|
else if(str.equalsIgnoreCase("Maroon"))
|
|
color = hexToColor("#800000");
|
|
else if(str.equalsIgnoreCase("Red"))
|
|
color = hexToColor("#FF0000");
|
|
else if(str.equalsIgnoreCase("Purple"))
|
|
color = hexToColor("#800080");
|
|
else if(str.equalsIgnoreCase("Fuchsia"))
|
|
color = hexToColor("#FF00FF");
|
|
else if(str.equalsIgnoreCase("Green"))
|
|
color = hexToColor("#008000");
|
|
else if(str.equalsIgnoreCase("Lime"))
|
|
color = hexToColor("#00FF00");
|
|
else if(str.equalsIgnoreCase("Olive"))
|
|
color = hexToColor("#808000");
|
|
else if(str.equalsIgnoreCase("Yellow"))
|
|
color = hexToColor("#FFFF00");
|
|
else if(str.equalsIgnoreCase("Navy"))
|
|
color = hexToColor("#000080");
|
|
else if(str.equalsIgnoreCase("Blue"))
|
|
color = hexToColor("#0000FF");
|
|
else if(str.equalsIgnoreCase("Teal"))
|
|
color = hexToColor("#008080");
|
|
else if(str.equalsIgnoreCase("Aqua"))
|
|
color = hexToColor("#00FFFF");
|
|
else if(str.equalsIgnoreCase("Orange"))
|
|
color = hexToColor("#FF8000");
|
|
else
|
|
color = hexToColor(str); // sometimes get specified without leading #
|
|
return color;
|
|
}
|
|
|
|
/**
|
|
* Parses a String in the format <code>rgb(r, g, b)</code> where
|
|
* each of the Color components is either an integer, or a floating number
|
|
* with a % after indicating a percentage value of 255. Values are
|
|
* constrained to fit with 0-255. The resulting Color is returned.
|
|
*/
|
|
private static Color parseRGB(String string) {
|
|
// Find the next numeric char
|
|
int[] index = new int[1];
|
|
|
|
index[0] = 4;
|
|
int red = getColorComponent(string, index);
|
|
int green = getColorComponent(string, index);
|
|
int blue = getColorComponent(string, index);
|
|
|
|
return new Color(red, green, blue);
|
|
}
|
|
|
|
/**
|
|
* Returns the next integer value from <code>string</code> starting
|
|
* at <code>index[0]</code>. The value can either can an integer, or
|
|
* a percentage (floating number ending with %), in which case it is
|
|
* multiplied by 255.
|
|
*/
|
|
private static int getColorComponent(String string, int[] index) {
|
|
int length = string.length();
|
|
char aChar;
|
|
|
|
// Skip non-decimal chars
|
|
while(index[0] < length && (aChar = string.charAt(index[0])) != '-' &&
|
|
!Character.isDigit(aChar) && aChar != '.') {
|
|
index[0]++;
|
|
}
|
|
|
|
int start = index[0];
|
|
|
|
if (start < length && string.charAt(index[0]) == '-') {
|
|
index[0]++;
|
|
}
|
|
while(index[0] < length &&
|
|
Character.isDigit(string.charAt(index[0]))) {
|
|
index[0]++;
|
|
}
|
|
if (index[0] < length && string.charAt(index[0]) == '.') {
|
|
// Decimal value
|
|
index[0]++;
|
|
while(index[0] < length &&
|
|
Character.isDigit(string.charAt(index[0]))) {
|
|
index[0]++;
|
|
}
|
|
}
|
|
if (start != index[0]) {
|
|
try {
|
|
float value = Float.parseFloat(string.substring
|
|
(start, index[0]));
|
|
|
|
if (index[0] < length && string.charAt(index[0]) == '%') {
|
|
index[0]++;
|
|
value = value * 255f / 100f;
|
|
}
|
|
return Math.min(255, Math.max(0, (int)value));
|
|
} catch (NumberFormatException nfe) {
|
|
// Treat as 0
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int getIndexOfSize(float pt, int[] sizeMap) {
|
|
for (int i = 0; i < sizeMap.length; i ++ )
|
|
if (pt <= sizeMap[i])
|
|
return i + 1;
|
|
return sizeMap.length;
|
|
}
|
|
|
|
static int getIndexOfSize(float pt, StyleSheet ss) {
|
|
int[] sizeMap = (ss != null) ? ss.getSizeMap() :
|
|
StyleSheet.sizeMapDefault;
|
|
return getIndexOfSize(pt, sizeMap);
|
|
}
|
|
|
|
|
|
/**
|
|
* @return an array of all the strings in <code>value</code>
|
|
* that are separated by whitespace.
|
|
*/
|
|
static String[] parseStrings(String value) {
|
|
int current, last;
|
|
int length = (value == null) ? 0 : value.length();
|
|
Vector<String> temp = new Vector<String>(4);
|
|
|
|
current = 0;
|
|
while (current < length) {
|
|
// Skip ws
|
|
while (current < length && Character.isWhitespace
|
|
(value.charAt(current))) {
|
|
current++;
|
|
}
|
|
last = current;
|
|
while (current < length && !Character.isWhitespace
|
|
(value.charAt(current))) {
|
|
current++;
|
|
}
|
|
if (last != current) {
|
|
temp.addElement(value.substring(last, current));
|
|
}
|
|
current++;
|
|
}
|
|
String[] retValue = new String[temp.size()];
|
|
temp.copyInto(retValue);
|
|
return retValue;
|
|
}
|
|
|
|
/**
|
|
* Return the point size, given a size index. Legal HTML index sizes
|
|
* are 1-7.
|
|
*/
|
|
float getPointSize(int index, StyleSheet ss) {
|
|
ss = getStyleSheet(ss);
|
|
int[] sizeMap = (ss != null) ? ss.getSizeMap() :
|
|
StyleSheet.sizeMapDefault;
|
|
--index;
|
|
if (index < 0)
|
|
return sizeMap[0];
|
|
else if (index > sizeMap.length - 1)
|
|
return sizeMap[sizeMap.length - 1];
|
|
else
|
|
return sizeMap[index];
|
|
}
|
|
|
|
|
|
private void translateEmbeddedAttributes(AttributeSet htmlAttrSet,
|
|
MutableAttributeSet cssAttrSet) {
|
|
Enumeration keys = htmlAttrSet.getAttributeNames();
|
|
if (htmlAttrSet.getAttribute(StyleConstants.NameAttribute) ==
|
|
HTML.Tag.HR) {
|
|
// HR needs special handling due to us treating it as a leaf.
|
|
translateAttributes(HTML.Tag.HR, htmlAttrSet, cssAttrSet);
|
|
}
|
|
while (keys.hasMoreElements()) {
|
|
Object key = keys.nextElement();
|
|
if (key instanceof HTML.Tag) {
|
|
HTML.Tag tag = (HTML.Tag)key;
|
|
Object o = htmlAttrSet.getAttribute(tag);
|
|
if (o != null && o instanceof AttributeSet) {
|
|
translateAttributes(tag, (AttributeSet)o, cssAttrSet);
|
|
}
|
|
} else if (key instanceof CSS.Attribute) {
|
|
cssAttrSet.addAttribute(key, htmlAttrSet.getAttribute(key));
|
|
}
|
|
}
|
|
}
|
|
|
|
private void translateAttributes(HTML.Tag tag,
|
|
AttributeSet htmlAttrSet,
|
|
MutableAttributeSet cssAttrSet) {
|
|
Enumeration names = htmlAttrSet.getAttributeNames();
|
|
while (names.hasMoreElements()) {
|
|
Object name = names.nextElement();
|
|
|
|
if (name instanceof HTML.Attribute) {
|
|
HTML.Attribute key = (HTML.Attribute)name;
|
|
|
|
/*
|
|
* HTML.Attribute.ALIGN needs special processing.
|
|
* It can map to to 1 of many(3) possible CSS attributes
|
|
* depending on the nature of the tag the attribute is
|
|
* part off and depending on the value of the attribute.
|
|
*/
|
|
if (key == HTML.Attribute.ALIGN) {
|
|
String htmlAttrValue = (String)htmlAttrSet.getAttribute(HTML.Attribute.ALIGN);
|
|
if (htmlAttrValue != null) {
|
|
CSS.Attribute cssAttr = getCssAlignAttribute(tag, htmlAttrSet);
|
|
if (cssAttr != null) {
|
|
Object o = getCssValue(cssAttr, htmlAttrValue);
|
|
if (o != null) {
|
|
cssAttrSet.addAttribute(cssAttr, o);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
if (key == HTML.Attribute.SIZE && !isHTMLFontTag(tag)) {
|
|
/*
|
|
* The html size attribute has a mapping in the CSS world only
|
|
* if it is par of a font or base font tag.
|
|
*/
|
|
} else if (tag == HTML.Tag.TABLE && key == HTML.Attribute.BORDER) {
|
|
int borderWidth = getTableBorder(htmlAttrSet);
|
|
|
|
if (borderWidth > 0) {
|
|
translateAttribute(HTML.Attribute.BORDER, Integer.toString(borderWidth), cssAttrSet);
|
|
}
|
|
} else {
|
|
translateAttribute(key, (String) htmlAttrSet.getAttribute(key), cssAttrSet);
|
|
}
|
|
}
|
|
} else if (name instanceof CSS.Attribute) {
|
|
cssAttrSet.addAttribute(name, htmlAttrSet.getAttribute(name));
|
|
}
|
|
}
|
|
}
|
|
|
|
private void translateAttribute(HTML.Attribute key,
|
|
String htmlAttrValue,
|
|
MutableAttributeSet cssAttrSet) {
|
|
/*
|
|
* In the case of all remaining HTML.Attribute's they
|
|
* map to 1 or more CCS.Attribute.
|
|
*/
|
|
CSS.Attribute[] cssAttrList = getCssAttribute(key);
|
|
|
|
if (cssAttrList == null || htmlAttrValue == null) {
|
|
return;
|
|
}
|
|
for (Attribute cssAttr : cssAttrList) {
|
|
Object o = getCssValue(cssAttr, htmlAttrValue);
|
|
if (o != null) {
|
|
cssAttrSet.addAttribute(cssAttr , o);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Given a CSS.Attribute object and its corresponding HTML.Attribute's
|
|
* value, this method returns a CssValue object to associate with the
|
|
* CSS attribute.
|
|
*
|
|
* @param the CSS.Attribute
|
|
* @param a String containing the value associated HTML.Attribtue.
|
|
*/
|
|
Object getCssValue(CSS.Attribute cssAttr, String htmlAttrValue) {
|
|
CssValue value = (CssValue)valueConvertor.get(cssAttr);
|
|
Object o = value.parseHtmlValue(htmlAttrValue);
|
|
return o;
|
|
}
|
|
|
|
/**
|
|
* Maps an HTML.Attribute object to its appropriate CSS.Attributes.
|
|
*
|
|
* @param HTML.Attribute
|
|
* @return CSS.Attribute[]
|
|
*/
|
|
private CSS.Attribute[] getCssAttribute(HTML.Attribute hAttr) {
|
|
return htmlAttrToCssAttrMap.get(hAttr);
|
|
}
|
|
|
|
/**
|
|
* Maps HTML.Attribute.ALIGN to either:
|
|
* CSS.Attribute.TEXT_ALIGN
|
|
* CSS.Attribute.FLOAT
|
|
* CSS.Attribute.VERTICAL_ALIGN
|
|
* based on the tag associated with the attribute and the
|
|
* value of the attribute.
|
|
*
|
|
* @param AttributeSet containing HTML attributes.
|
|
* @return CSS.Attribute mapping for HTML.Attribute.ALIGN.
|
|
*/
|
|
private CSS.Attribute getCssAlignAttribute(HTML.Tag tag,
|
|
AttributeSet htmlAttrSet) {
|
|
return CSS.Attribute.TEXT_ALIGN;
|
|
/*
|
|
String htmlAttrValue = (String)htmlAttrSet.getAttribute(HTML.Attribute.ALIGN);
|
|
CSS.Attribute cssAttr = CSS.Attribute.TEXT_ALIGN;
|
|
if (htmlAttrValue != null && htmlAttrSet instanceof Element) {
|
|
Element elem = (Element)htmlAttrSet;
|
|
if (!elem.isLeaf() && tag.isBlock() && validTextAlignValue(htmlAttrValue)) {
|
|
return CSS.Attribute.TEXT_ALIGN;
|
|
} else if (isFloater(htmlAttrValue)) {
|
|
return CSS.Attribute.FLOAT;
|
|
} else if (elem.isLeaf()) {
|
|
return CSS.Attribute.VERTICAL_ALIGN;
|
|
}
|
|
}
|
|
return null;
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* Fetches the tag associated with the HTML AttributeSet.
|
|
*
|
|
* @param AttributeSet containing the HTML attributes.
|
|
* @return HTML.Tag
|
|
*/
|
|
private HTML.Tag getHTMLTag(AttributeSet htmlAttrSet) {
|
|
Object o = htmlAttrSet.getAttribute(StyleConstants.NameAttribute);
|
|
if (o instanceof HTML.Tag) {
|
|
HTML.Tag tag = (HTML.Tag) o;
|
|
return tag;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
private boolean isHTMLFontTag(HTML.Tag tag) {
|
|
return (tag != null && ((tag == HTML.Tag.FONT) || (tag == HTML.Tag.BASEFONT)));
|
|
}
|
|
|
|
|
|
private boolean isFloater(String alignValue) {
|
|
return (alignValue.equals("left") || alignValue.equals("right"));
|
|
}
|
|
|
|
private boolean validTextAlignValue(String alignValue) {
|
|
return (isFloater(alignValue) || alignValue.equals("center"));
|
|
}
|
|
|
|
/**
|
|
* Base class to CSS values in the attribute sets. This
|
|
* is intended to act as a convertor to/from other attribute
|
|
* formats.
|
|
* <p>
|
|
* The CSS parser uses the parseCssValue method to convert
|
|
* a string to whatever format is appropriate a given key
|
|
* (i.e. these convertors are stored in a map using the
|
|
* CSS.Attribute as a key and the CssValue as the value).
|
|
* <p>
|
|
* The HTML to CSS conversion process first converts the
|
|
* HTML.Attribute to a CSS.Attribute, and then calls
|
|
* the parseHtmlValue method on the value of the HTML
|
|
* attribute to produce the corresponding CSS value.
|
|
* <p>
|
|
* The StyleConstants to CSS conversion process first
|
|
* converts the StyleConstants attribute to a
|
|
* CSS.Attribute, and then calls the fromStyleConstants
|
|
* method to convert the StyleConstants value to a
|
|
* CSS value.
|
|
* <p>
|
|
* The CSS to StyleConstants conversion process first
|
|
* converts the StyleConstants attribute to a
|
|
* CSS.Attribute, and then calls the toStyleConstants
|
|
* method to convert the CSS value to a StyleConstants
|
|
* value.
|
|
*/
|
|
static class CssValue implements Serializable {
|
|
|
|
/**
|
|
* Convert a CSS value string to the internal format
|
|
* (for fast processing) used in the attribute sets.
|
|
* The fallback storage for any value that we don't
|
|
* have a special binary format for is a String.
|
|
*/
|
|
Object parseCssValue(String value) {
|
|
return value;
|
|
}
|
|
|
|
/**
|
|
* Convert an HTML attribute value to a CSS attribute
|
|
* value. If there is no conversion, return null.
|
|
* This is implemented to simply forward to the CSS
|
|
* parsing by default (since some of the attribute
|
|
* values are the same). If the attribute value
|
|
* isn't recognized as a CSS value it is generally
|
|
* returned as null.
|
|
*/
|
|
Object parseHtmlValue(String value) {
|
|
return parseCssValue(value);
|
|
}
|
|
|
|
/**
|
|
* Converts a <code>StyleConstants</code> attribute value to
|
|
* a CSS attribute value. If there is no conversion,
|
|
* returns <code>null</code>. By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @param value the value of a <code>StyleConstants</code>
|
|
* attribute to be converted
|
|
* @return the CSS value that represents the
|
|
* <code>StyleConstants</code> value
|
|
*/
|
|
Object fromStyleConstants(StyleConstants key, Object value) {
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Converts a CSS attribute value to a
|
|
* <code>StyleConstants</code>
|
|
* value. If there is no conversion, returns
|
|
* <code>null</code>.
|
|
* By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @param v the view containing <code>AttributeSet</code>
|
|
* @return the <code>StyleConstants</code> attribute value that
|
|
* represents the CSS attribute value
|
|
*/
|
|
Object toStyleConstants(StyleConstants key, View v) {
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Return the CSS format of the value
|
|
*/
|
|
public String toString() {
|
|
return svalue;
|
|
}
|
|
|
|
/**
|
|
* The value as a string... before conversion to a
|
|
* binary format.
|
|
*/
|
|
String svalue;
|
|
}
|
|
|
|
/**
|
|
* By default CSS attributes are represented as simple
|
|
* strings. They also have no conversion to/from
|
|
* StyleConstants by default. This class represents the
|
|
* value as a string (via the superclass), but
|
|
* provides StyleConstants conversion support for the
|
|
* CSS attributes that are held as strings.
|
|
*/
|
|
static class StringValue extends CssValue {
|
|
|
|
/**
|
|
* Convert a CSS value string to the internal format
|
|
* (for fast processing) used in the attribute sets.
|
|
* This produces a StringValue, so that it can be
|
|
* used to convert from CSS to StyleConstants values.
|
|
*/
|
|
Object parseCssValue(String value) {
|
|
StringValue sv = new StringValue();
|
|
sv.svalue = value;
|
|
return sv;
|
|
}
|
|
|
|
/**
|
|
* Converts a <code>StyleConstants</code> attribute value to
|
|
* a CSS attribute value. If there is no conversion
|
|
* returns <code>null</code>.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @param value the value of a <code>StyleConstants</code>
|
|
* attribute to be converted
|
|
* @return the CSS value that represents the
|
|
* <code>StyleConstants</code> value
|
|
*/
|
|
Object fromStyleConstants(StyleConstants key, Object value) {
|
|
if (key == StyleConstants.Italic) {
|
|
if (value.equals(Boolean.TRUE)) {
|
|
return parseCssValue("italic");
|
|
}
|
|
return parseCssValue("");
|
|
} else if (key == StyleConstants.Underline) {
|
|
if (value.equals(Boolean.TRUE)) {
|
|
return parseCssValue("underline");
|
|
}
|
|
return parseCssValue("");
|
|
} else if (key == StyleConstants.Alignment) {
|
|
int align = ((Integer)value).intValue();
|
|
String ta;
|
|
switch(align) {
|
|
case StyleConstants.ALIGN_LEFT:
|
|
ta = "left";
|
|
break;
|
|
case StyleConstants.ALIGN_RIGHT:
|
|
ta = "right";
|
|
break;
|
|
case StyleConstants.ALIGN_CENTER:
|
|
ta = "center";
|
|
break;
|
|
case StyleConstants.ALIGN_JUSTIFIED:
|
|
ta = "justify";
|
|
break;
|
|
default:
|
|
ta = "left";
|
|
}
|
|
return parseCssValue(ta);
|
|
} else if (key == StyleConstants.StrikeThrough) {
|
|
if (value.equals(Boolean.TRUE)) {
|
|
return parseCssValue("line-through");
|
|
}
|
|
return parseCssValue("");
|
|
} else if (key == StyleConstants.Superscript) {
|
|
if (value.equals(Boolean.TRUE)) {
|
|
return parseCssValue("super");
|
|
}
|
|
return parseCssValue("");
|
|
} else if (key == StyleConstants.Subscript) {
|
|
if (value.equals(Boolean.TRUE)) {
|
|
return parseCssValue("sub");
|
|
}
|
|
return parseCssValue("");
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Converts a CSS attribute value to a
|
|
* <code>StyleConstants</code> value.
|
|
* If there is no conversion, returns <code>null</code>.
|
|
* By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @return the <code>StyleConstants</code> attribute value that
|
|
* represents the CSS attribute value
|
|
*/
|
|
Object toStyleConstants(StyleConstants key, View v) {
|
|
if (key == StyleConstants.Italic) {
|
|
if (svalue.indexOf("italic") >= 0) {
|
|
return Boolean.TRUE;
|
|
}
|
|
return Boolean.FALSE;
|
|
} else if (key == StyleConstants.Underline) {
|
|
if (svalue.indexOf("underline") >= 0) {
|
|
return Boolean.TRUE;
|
|
}
|
|
return Boolean.FALSE;
|
|
} else if (key == StyleConstants.Alignment) {
|
|
if (svalue.equals("right")) {
|
|
return new Integer(StyleConstants.ALIGN_RIGHT);
|
|
} else if (svalue.equals("center")) {
|
|
return new Integer(StyleConstants.ALIGN_CENTER);
|
|
} else if (svalue.equals("justify")) {
|
|
return new Integer(StyleConstants.ALIGN_JUSTIFIED);
|
|
}
|
|
return new Integer(StyleConstants.ALIGN_LEFT);
|
|
} else if (key == StyleConstants.StrikeThrough) {
|
|
if (svalue.indexOf("line-through") >= 0) {
|
|
return Boolean.TRUE;
|
|
}
|
|
return Boolean.FALSE;
|
|
} else if (key == StyleConstants.Superscript) {
|
|
if (svalue.indexOf("super") >= 0) {
|
|
return Boolean.TRUE;
|
|
}
|
|
return Boolean.FALSE;
|
|
} else if (key == StyleConstants.Subscript) {
|
|
if (svalue.indexOf("sub") >= 0) {
|
|
return Boolean.TRUE;
|
|
}
|
|
return Boolean.FALSE;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// Used by ViewAttributeSet
|
|
boolean isItalic() {
|
|
return (svalue.indexOf("italic") != -1);
|
|
}
|
|
|
|
boolean isStrike() {
|
|
return (svalue.indexOf("line-through") != -1);
|
|
}
|
|
|
|
boolean isUnderline() {
|
|
return (svalue.indexOf("underline") != -1);
|
|
}
|
|
|
|
boolean isSub() {
|
|
return (svalue.indexOf("sub") != -1);
|
|
}
|
|
|
|
boolean isSup() {
|
|
return (svalue.indexOf("sup") != -1);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Represents a value for the CSS.FONT_SIZE attribute.
|
|
* The binary format of the value can be one of several
|
|
* types. If the type is Float,
|
|
* the value is specified in terms of point or
|
|
* percentage, depending upon the ending of the
|
|
* associated string.
|
|
* If the type is Integer, the value is specified
|
|
* in terms of a size index.
|
|
*/
|
|
class FontSize extends CssValue {
|
|
|
|
/**
|
|
* Returns the size in points. This is ultimately
|
|
* what we need for the purpose of creating/fetching
|
|
* a Font object.
|
|
*
|
|
* @param a the attribute set the value is being
|
|
* requested from. We may need to walk up the
|
|
* resolve hierarchy if it's relative.
|
|
*/
|
|
int getValue(AttributeSet a, StyleSheet ss) {
|
|
ss = getStyleSheet(ss);
|
|
if (index) {
|
|
// it's an index, translate from size table
|
|
return Math.round(getPointSize((int) value, ss));
|
|
}
|
|
else if (lu == null) {
|
|
return Math.round(value);
|
|
}
|
|
else {
|
|
if (lu.type == 0) {
|
|
boolean isW3CLengthUnits = (ss == null) ? false : ss.isW3CLengthUnits();
|
|
return Math.round(lu.getValue(isW3CLengthUnits));
|
|
}
|
|
if (a != null) {
|
|
AttributeSet resolveParent = a.getResolveParent();
|
|
|
|
if (resolveParent != null) {
|
|
int pValue = StyleConstants.getFontSize(resolveParent);
|
|
|
|
float retValue;
|
|
if (lu.type == 1 || lu.type == 3) {
|
|
retValue = lu.value * (float)pValue;
|
|
}
|
|
else {
|
|
retValue = lu.value + (float)pValue;
|
|
}
|
|
return Math.round(retValue);
|
|
}
|
|
}
|
|
// a is null, or no resolve parent.
|
|
return 12;
|
|
}
|
|
}
|
|
|
|
Object parseCssValue(String value) {
|
|
FontSize fs = new FontSize();
|
|
fs.svalue = value;
|
|
try {
|
|
if (value.equals("xx-small")) {
|
|
fs.value = 1;
|
|
fs.index = true;
|
|
} else if (value.equals("x-small")) {
|
|
fs.value = 2;
|
|
fs.index = true;
|
|
} else if (value.equals("small")) {
|
|
fs.value = 3;
|
|
fs.index = true;
|
|
} else if (value.equals("medium")) {
|
|
fs.value = 4;
|
|
fs.index = true;
|
|
} else if (value.equals("large")) {
|
|
fs.value = 5;
|
|
fs.index = true;
|
|
} else if (value.equals("x-large")) {
|
|
fs.value = 6;
|
|
fs.index = true;
|
|
} else if (value.equals("xx-large")) {
|
|
fs.value = 7;
|
|
fs.index = true;
|
|
} else {
|
|
fs.lu = new LengthUnit(value, (short)1, 1f);
|
|
}
|
|
// relative sizes, larger | smaller (adjust from parent by
|
|
// 1.5 pixels)
|
|
// em, ex refer to parent sizes
|
|
// lengths: pt, mm, cm, pc, in, px
|
|
// em (font height 3em would be 3 times font height)
|
|
// ex (height of X)
|
|
// lengths are (+/-) followed by a number and two letter
|
|
// unit identifier
|
|
} catch (NumberFormatException nfe) {
|
|
fs = null;
|
|
}
|
|
return fs;
|
|
}
|
|
|
|
Object parseHtmlValue(String value) {
|
|
if ((value == null) || (value.length() == 0)) {
|
|
return null;
|
|
}
|
|
FontSize fs = new FontSize();
|
|
fs.svalue = value;
|
|
|
|
try {
|
|
/*
|
|
* relative sizes in the size attribute are relative
|
|
* to the <basefont>'s size.
|
|
*/
|
|
int baseFontSize = getBaseFontSize();
|
|
if (value.charAt(0) == '+') {
|
|
int relSize = Integer.valueOf(value.substring(1)).intValue();
|
|
fs.value = baseFontSize + relSize;
|
|
fs.index = true;
|
|
} else if (value.charAt(0) == '-') {
|
|
int relSize = -Integer.valueOf(value.substring(1)).intValue();
|
|
fs.value = baseFontSize + relSize;
|
|
fs.index = true;
|
|
} else {
|
|
fs.value = Integer.parseInt(value);
|
|
if (fs.value > 7) {
|
|
fs.value = 7;
|
|
} else if (fs.value < 0) {
|
|
fs.value = 0;
|
|
}
|
|
fs.index = true;
|
|
}
|
|
|
|
} catch (NumberFormatException nfe) {
|
|
fs = null;
|
|
}
|
|
return fs;
|
|
}
|
|
|
|
/**
|
|
* Converts a <code>StyleConstants</code> attribute value to
|
|
* a CSS attribute value. If there is no conversion
|
|
* returns <code>null</code>. By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @param value the value of a <code>StyleConstants</code>
|
|
* attribute to be converted
|
|
* @return the CSS value that represents the
|
|
* <code>StyleConstants</code> value
|
|
*/
|
|
Object fromStyleConstants(StyleConstants key, Object value) {
|
|
if (value instanceof Number) {
|
|
FontSize fs = new FontSize();
|
|
|
|
fs.value = getIndexOfSize(((Number)value).floatValue(), StyleSheet.sizeMapDefault);
|
|
fs.svalue = Integer.toString((int)fs.value);
|
|
fs.index = true;
|
|
return fs;
|
|
}
|
|
return parseCssValue(value.toString());
|
|
}
|
|
|
|
/**
|
|
* Converts a CSS attribute value to a <code>StyleConstants</code>
|
|
* value. If there is no conversion, returns <code>null</code>.
|
|
* By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @return the <code>StyleConstants</code> attribute value that
|
|
* represents the CSS attribute value
|
|
*/
|
|
Object toStyleConstants(StyleConstants key, View v) {
|
|
if (v != null) {
|
|
return Integer.valueOf(getValue(v.getAttributes(), null));
|
|
}
|
|
return Integer.valueOf(getValue(null, null));
|
|
}
|
|
|
|
float value;
|
|
boolean index;
|
|
LengthUnit lu;
|
|
}
|
|
|
|
static class FontFamily extends CssValue {
|
|
|
|
/**
|
|
* Returns the font family to use.
|
|
*/
|
|
String getValue() {
|
|
return family;
|
|
}
|
|
|
|
Object parseCssValue(String value) {
|
|
int cIndex = value.indexOf(',');
|
|
FontFamily ff = new FontFamily();
|
|
ff.svalue = value;
|
|
ff.family = null;
|
|
|
|
if (cIndex == -1) {
|
|
setFontName(ff, value);
|
|
}
|
|
else {
|
|
boolean done = false;
|
|
int lastIndex;
|
|
int length = value.length();
|
|
cIndex = 0;
|
|
while (!done) {
|
|
// skip ws.
|
|
while (cIndex < length &&
|
|
Character.isWhitespace(value.charAt(cIndex)))
|
|
cIndex++;
|
|
// Find next ','
|
|
lastIndex = cIndex;
|
|
cIndex = value.indexOf(',', cIndex);
|
|
if (cIndex == -1) {
|
|
cIndex = length;
|
|
}
|
|
if (lastIndex < length) {
|
|
if (lastIndex != cIndex) {
|
|
int lastCharIndex = cIndex;
|
|
if (cIndex > 0 && value.charAt(cIndex - 1) == ' '){
|
|
lastCharIndex--;
|
|
}
|
|
setFontName(ff, value.substring
|
|
(lastIndex, lastCharIndex));
|
|
done = (ff.family != null);
|
|
}
|
|
cIndex++;
|
|
}
|
|
else {
|
|
done = true;
|
|
}
|
|
}
|
|
}
|
|
if (ff.family == null) {
|
|
ff.family = Font.SANS_SERIF;
|
|
}
|
|
return ff;
|
|
}
|
|
|
|
private void setFontName(FontFamily ff, String fontName) {
|
|
ff.family = fontName;
|
|
}
|
|
|
|
Object parseHtmlValue(String value) {
|
|
// TBD
|
|
return parseCssValue(value);
|
|
}
|
|
|
|
/**
|
|
* Converts a <code>StyleConstants</code> attribute value to
|
|
* a CSS attribute value. If there is no conversion
|
|
* returns <code>null</code>. By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @param value the value of a <code>StyleConstants</code>
|
|
* attribute to be converted
|
|
* @return the CSS value that represents the
|
|
* <code>StyleConstants</code> value
|
|
*/
|
|
Object fromStyleConstants(StyleConstants key, Object value) {
|
|
return parseCssValue(value.toString());
|
|
}
|
|
|
|
/**
|
|
* Converts a CSS attribute value to a <code>StyleConstants</code>
|
|
* value. If there is no conversion, returns <code>null</code>.
|
|
* By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @return the <code>StyleConstants</code> attribute value that
|
|
* represents the CSS attribute value
|
|
*/
|
|
Object toStyleConstants(StyleConstants key, View v) {
|
|
return family;
|
|
}
|
|
|
|
String family;
|
|
}
|
|
|
|
static class FontWeight extends CssValue {
|
|
|
|
int getValue() {
|
|
return weight;
|
|
}
|
|
|
|
Object parseCssValue(String value) {
|
|
FontWeight fw = new FontWeight();
|
|
fw.svalue = value;
|
|
if (value.equals("bold")) {
|
|
fw.weight = 700;
|
|
} else if (value.equals("normal")) {
|
|
fw.weight = 400;
|
|
} else {
|
|
// PENDING(prinz) add support for relative values
|
|
try {
|
|
fw.weight = Integer.parseInt(value);
|
|
} catch (NumberFormatException nfe) {
|
|
fw = null;
|
|
}
|
|
}
|
|
return fw;
|
|
}
|
|
|
|
/**
|
|
* Converts a <code>StyleConstants</code> attribute value to
|
|
* a CSS attribute value. If there is no conversion
|
|
* returns <code>null</code>. By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @param value the value of a <code>StyleConstants</code>
|
|
* attribute to be converted
|
|
* @return the CSS value that represents the
|
|
* <code>StyleConstants</code> value
|
|
*/
|
|
Object fromStyleConstants(StyleConstants key, Object value) {
|
|
if (value.equals(Boolean.TRUE)) {
|
|
return parseCssValue("bold");
|
|
}
|
|
return parseCssValue("normal");
|
|
}
|
|
|
|
/**
|
|
* Converts a CSS attribute value to a <code>StyleConstants</code>
|
|
* value. If there is no conversion, returns <code>null</code>.
|
|
* By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @return the <code>StyleConstants</code> attribute value that
|
|
* represents the CSS attribute value
|
|
*/
|
|
Object toStyleConstants(StyleConstants key, View v) {
|
|
return (weight > 500) ? Boolean.TRUE : Boolean.FALSE;
|
|
}
|
|
|
|
boolean isBold() {
|
|
return (weight > 500);
|
|
}
|
|
|
|
int weight;
|
|
}
|
|
|
|
static class ColorValue extends CssValue {
|
|
|
|
/**
|
|
* Returns the color to use.
|
|
*/
|
|
Color getValue() {
|
|
return c;
|
|
}
|
|
|
|
Object parseCssValue(String value) {
|
|
|
|
Color c = stringToColor(value);
|
|
if (c != null) {
|
|
ColorValue cv = new ColorValue();
|
|
cv.svalue = value;
|
|
cv.c = c;
|
|
return cv;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
Object parseHtmlValue(String value) {
|
|
return parseCssValue(value);
|
|
}
|
|
|
|
/**
|
|
* Converts a <code>StyleConstants</code> attribute value to
|
|
* a CSS attribute value. If there is no conversion
|
|
* returns <code>null</code>. By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @param value the value of a <code>StyleConstants</code>
|
|
* attribute to be converted
|
|
* @return the CSS value that represents the
|
|
* <code>StyleConstants</code> value
|
|
*/
|
|
Object fromStyleConstants(StyleConstants key, Object value) {
|
|
ColorValue colorValue = new ColorValue();
|
|
colorValue.c = (Color)value;
|
|
colorValue.svalue = colorToHex(colorValue.c);
|
|
return colorValue;
|
|
}
|
|
|
|
/**
|
|
* Converts a CSS attribute value to a <code>StyleConstants</code>
|
|
* value. If there is no conversion, returns <code>null</code>.
|
|
* By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @return the <code>StyleConstants</code> attribute value that
|
|
* represents the CSS attribute value
|
|
*/
|
|
Object toStyleConstants(StyleConstants key, View v) {
|
|
return c;
|
|
}
|
|
|
|
Color c;
|
|
}
|
|
|
|
static class BorderStyle extends CssValue {
|
|
|
|
CSS.Value getValue() {
|
|
return style;
|
|
}
|
|
|
|
Object parseCssValue(String value) {
|
|
CSS.Value cssv = CSS.getValue(value);
|
|
if (cssv != null) {
|
|
if ((cssv == CSS.Value.INSET) ||
|
|
(cssv == CSS.Value.OUTSET) ||
|
|
(cssv == CSS.Value.NONE) ||
|
|
(cssv == CSS.Value.DOTTED) ||
|
|
(cssv == CSS.Value.DASHED) ||
|
|
(cssv == CSS.Value.SOLID) ||
|
|
(cssv == CSS.Value.DOUBLE) ||
|
|
(cssv == CSS.Value.GROOVE) ||
|
|
(cssv == CSS.Value.RIDGE)) {
|
|
|
|
BorderStyle bs = new BorderStyle();
|
|
bs.svalue = value;
|
|
bs.style = cssv;
|
|
return bs;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
private void writeObject(java.io.ObjectOutputStream s)
|
|
throws IOException {
|
|
s.defaultWriteObject();
|
|
if (style == null) {
|
|
s.writeObject(null);
|
|
}
|
|
else {
|
|
s.writeObject(style.toString());
|
|
}
|
|
}
|
|
|
|
private void readObject(ObjectInputStream s)
|
|
throws ClassNotFoundException, IOException {
|
|
s.defaultReadObject();
|
|
Object value = s.readObject();
|
|
if (value != null) {
|
|
style = CSS.getValue((String)value);
|
|
}
|
|
}
|
|
|
|
// CSS.Values are static, don't archive it.
|
|
transient private CSS.Value style;
|
|
}
|
|
|
|
static class LengthValue extends CssValue {
|
|
|
|
/**
|
|
* if this length value may be negative.
|
|
*/
|
|
boolean mayBeNegative;
|
|
|
|
LengthValue() {
|
|
this(false);
|
|
}
|
|
|
|
LengthValue(boolean mayBeNegative) {
|
|
this.mayBeNegative = mayBeNegative;
|
|
}
|
|
|
|
/**
|
|
* Returns the length (span) to use.
|
|
*/
|
|
float getValue() {
|
|
return getValue(false);
|
|
}
|
|
|
|
float getValue(boolean isW3CLengthUnits) {
|
|
return getValue(0, isW3CLengthUnits);
|
|
}
|
|
|
|
/**
|
|
* Returns the length (span) to use. If the value represents
|
|
* a percentage, it is scaled based on <code>currentValue</code>.
|
|
*/
|
|
float getValue(float currentValue) {
|
|
return getValue(currentValue, false);
|
|
}
|
|
float getValue(float currentValue, boolean isW3CLengthUnits) {
|
|
if (percentage) {
|
|
return span * currentValue;
|
|
}
|
|
return LengthUnit.getValue(span, units, isW3CLengthUnits);
|
|
}
|
|
|
|
/**
|
|
* Returns true if the length represents a percentage of the
|
|
* containing box.
|
|
*/
|
|
boolean isPercentage() {
|
|
return percentage;
|
|
}
|
|
|
|
Object parseCssValue(String value) {
|
|
LengthValue lv;
|
|
try {
|
|
// Assume pixels
|
|
float absolute = Float.valueOf(value).floatValue();
|
|
lv = new LengthValue();
|
|
lv.span = absolute;
|
|
} catch (NumberFormatException nfe) {
|
|
// Not pixels, use LengthUnit
|
|
LengthUnit lu = new LengthUnit(value,
|
|
LengthUnit.UNINITALIZED_LENGTH,
|
|
0);
|
|
|
|
// PENDING: currently, we only support absolute values and
|
|
// percentages.
|
|
switch (lu.type) {
|
|
case 0:
|
|
// Absolute
|
|
lv = new LengthValue();
|
|
lv.span =
|
|
(mayBeNegative) ? lu.value : Math.max(0, lu.value);
|
|
lv.units = lu.units;
|
|
break;
|
|
case 1:
|
|
// %
|
|
lv = new LengthValue();
|
|
lv.span = Math.max(0, Math.min(1, lu.value));
|
|
lv.percentage = true;
|
|
break;
|
|
default:
|
|
return null;
|
|
}
|
|
}
|
|
lv.svalue = value;
|
|
return lv;
|
|
}
|
|
|
|
Object parseHtmlValue(String value) {
|
|
if (value.equals(HTML.NULL_ATTRIBUTE_VALUE)) {
|
|
value = "1";
|
|
}
|
|
return parseCssValue(value);
|
|
}
|
|
/**
|
|
* Converts a <code>StyleConstants</code> attribute value to
|
|
* a CSS attribute value. If there is no conversion,
|
|
* returns <code>null</code>. By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @param value the value of a <code>StyleConstants</code>
|
|
* attribute to be converted
|
|
* @return the CSS value that represents the
|
|
* <code>StyleConstants</code> value
|
|
*/
|
|
Object fromStyleConstants(StyleConstants key, Object value) {
|
|
LengthValue v = new LengthValue();
|
|
v.svalue = value.toString();
|
|
v.span = ((Float)value).floatValue();
|
|
return v;
|
|
}
|
|
|
|
/**
|
|
* Converts a CSS attribute value to a <code>StyleConstants</code>
|
|
* value. If there is no conversion, returns <code>null</code>.
|
|
* By default, there is no conversion.
|
|
*
|
|
* @param key the <code>StyleConstants</code> attribute
|
|
* @return the <code>StyleConstants</code> attribute value that
|
|
* represents the CSS attribute value
|
|
*/
|
|
Object toStyleConstants(StyleConstants key, View v) {
|
|
return new Float(getValue(false));
|
|
}
|
|
|
|
/** If true, span is a percentage value, and that to determine
|
|
* the length another value needs to be passed in. */
|
|
boolean percentage;
|
|
/** Either the absolute value (percentage == false) or
|
|
* a percentage value. */
|
|
float span;
|
|
|
|
String units = null;
|
|
}
|
|
|
|
|
|
/**
|
|
* BorderWidthValue is used to model BORDER_XXX_WIDTH and adds support
|
|
* for the thin/medium/thick values.
|
|
*/
|
|
static class BorderWidthValue extends LengthValue {
|
|
BorderWidthValue(String svalue, int index) {
|
|
this.svalue = svalue;
|
|
span = values[index];
|
|
percentage = false;
|
|
}
|
|
|
|
Object parseCssValue(String value) {
|
|
if (value != null) {
|
|
if (value.equals("thick")) {
|
|
return new BorderWidthValue(value, 2);
|
|
}
|
|
else if (value.equals("medium")) {
|
|
return new BorderWidthValue(value, 1);
|
|
}
|
|
else if (value.equals("thin")) {
|
|
return new BorderWidthValue(value, 0);
|
|
}
|
|
}
|
|
// Assume its a length.
|
|
return super.parseCssValue(value);
|
|
}
|
|
|
|
Object parseHtmlValue(String value) {
|
|
if (value == HTML.NULL_ATTRIBUTE_VALUE) {
|
|
return parseCssValue("medium");
|
|
}
|
|
return parseCssValue(value);
|
|
}
|
|
|
|
/** Values used to represent border width. */
|
|
private static final float[] values = { 1, 2, 4 };
|
|
}
|
|
|
|
|
|
/**
|
|
* Handles uniquing of CSS values, like lists, and background image
|
|
* repeating.
|
|
*/
|
|
static class CssValueMapper extends CssValue {
|
|
Object parseCssValue(String value) {
|
|
Object retValue = cssValueToInternalValueMap.get(value);
|
|
if (retValue == null) {
|
|
retValue = cssValueToInternalValueMap.get(value.toLowerCase());
|
|
}
|
|
return retValue;
|
|
}
|
|
|
|
|
|
Object parseHtmlValue(String value) {
|
|
Object retValue = htmlValueToCssValueMap.get(value);
|
|
if (retValue == null) {
|
|
retValue = htmlValueToCssValueMap.get(value.toLowerCase());
|
|
}
|
|
return retValue;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Used for background images, to represent the position.
|
|
*/
|
|
static class BackgroundPosition extends CssValue {
|
|
float horizontalPosition;
|
|
float verticalPosition;
|
|
// bitmask: bit 0, horizontal relative, bit 1 horizontal relative to
|
|
// font size, 2 vertical relative to size, 3 vertical relative to
|
|
// font size.
|
|
//
|
|
short relative;
|
|
|
|
Object parseCssValue(String value) {
|
|
// 'top left' and 'left top' both mean the same as '0% 0%'.
|
|
// 'top', 'top center' and 'center top' mean the same as '50% 0%'.
|
|
// 'right top' and 'top right' mean the same as '100% 0%'.
|
|
// 'left', 'left center' and 'center left' mean the same as
|
|
// '0% 50%'.
|
|
// 'center' and 'center center' mean the same as '50% 50%'.
|
|
// 'right', 'right center' and 'center right' mean the same as
|
|
// '100% 50%'.
|
|
// 'bottom left' and 'left bottom' mean the same as '0% 100%'.
|
|
// 'bottom', 'bottom center' and 'center bottom' mean the same as
|
|
// '50% 100%'.
|
|
// 'bottom right' and 'right bottom' mean the same as '100% 100%'.
|
|
String[] strings = CSS.parseStrings(value);
|
|
int count = strings.length;
|
|
BackgroundPosition bp = new BackgroundPosition();
|
|
bp.relative = 5;
|
|
bp.svalue = value;
|
|
|
|
if (count > 0) {
|
|
// bit 0 for vert, 1 hor, 2 for center
|
|
short found = 0;
|
|
int index = 0;
|
|
while (index < count) {
|
|
// First, check for keywords
|
|
String string = strings[index++];
|
|
if (string.equals("center")) {
|
|
found |= 4;
|
|
continue;
|
|
}
|
|
else {
|
|
if ((found & 1) == 0) {
|
|
if (string.equals("top")) {
|
|
found |= 1;
|
|
}
|
|
else if (string.equals("bottom")) {
|
|
found |= 1;
|
|
bp.verticalPosition = 1;
|
|
continue;
|
|
}
|
|
}
|
|
if ((found & 2) == 0) {
|
|
if (string.equals("left")) {
|
|
found |= 2;
|
|
bp.horizontalPosition = 0;
|
|
}
|
|
else if (string.equals("right")) {
|
|
found |= 2;
|
|
bp.horizontalPosition = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (found != 0) {
|
|
if ((found & 1) == 1) {
|
|
if ((found & 2) == 0) {
|
|
// vert and no horiz.
|
|
bp.horizontalPosition = .5f;
|
|
}
|
|
}
|
|
else if ((found & 2) == 2) {
|
|
// horiz and no vert.
|
|
bp.verticalPosition = .5f;
|
|
}
|
|
else {
|
|
// no horiz, no vert, but center
|
|
bp.horizontalPosition = bp.verticalPosition = .5f;
|
|
}
|
|
}
|
|
else {
|
|
// Assume lengths
|
|
LengthUnit lu = new LengthUnit(strings[0], (short)0, 0f);
|
|
|
|
if (lu.type == 0) {
|
|
bp.horizontalPosition = lu.value;
|
|
bp.relative = (short)(1 ^ bp.relative);
|
|
}
|
|
else if (lu.type == 1) {
|
|
bp.horizontalPosition = lu.value;
|
|
}
|
|
else if (lu.type == 3) {
|
|
bp.horizontalPosition = lu.value;
|
|
bp.relative = (short)((1 ^ bp.relative) | 2);
|
|
}
|
|
if (count > 1) {
|
|
lu = new LengthUnit(strings[1], (short)0, 0f);
|
|
|
|
if (lu.type == 0) {
|
|
bp.verticalPosition = lu.value;
|
|
bp.relative = (short)(4 ^ bp.relative);
|
|
}
|
|
else if (lu.type == 1) {
|
|
bp.verticalPosition = lu.value;
|
|
}
|
|
else if (lu.type == 3) {
|
|
bp.verticalPosition = lu.value;
|
|
bp.relative = (short)((4 ^ bp.relative) | 8);
|
|
}
|
|
}
|
|
else {
|
|
bp.verticalPosition = .5f;
|
|
}
|
|
}
|
|
}
|
|
return bp;
|
|
}
|
|
|
|
boolean isHorizontalPositionRelativeToSize() {
|
|
return ((relative & 1) == 1);
|
|
}
|
|
|
|
boolean isHorizontalPositionRelativeToFontSize() {
|
|
return ((relative & 2) == 2);
|
|
}
|
|
|
|
float getHorizontalPosition() {
|
|
return horizontalPosition;
|
|
}
|
|
|
|
boolean isVerticalPositionRelativeToSize() {
|
|
return ((relative & 4) == 4);
|
|
}
|
|
|
|
boolean isVerticalPositionRelativeToFontSize() {
|
|
return ((relative & 8) == 8);
|
|
}
|
|
|
|
float getVerticalPosition() {
|
|
return verticalPosition;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Used for BackgroundImages.
|
|
*/
|
|
static class BackgroundImage extends CssValue {
|
|
private boolean loadedImage;
|
|
private ImageIcon image;
|
|
|
|
Object parseCssValue(String value) {
|
|
BackgroundImage retValue = new BackgroundImage();
|
|
retValue.svalue = value;
|
|
return retValue;
|
|
}
|
|
|
|
Object parseHtmlValue(String value) {
|
|
return parseCssValue(value);
|
|
}
|
|
|
|
// PENDING: this base is wrong for linked style sheets.
|
|
ImageIcon getImage(URL base) {
|
|
if (!loadedImage) {
|
|
synchronized(this) {
|
|
if (!loadedImage) {
|
|
URL url = CSS.getURL(base, svalue);
|
|
loadedImage = true;
|
|
if (url != null) {
|
|
image = new ImageIcon();
|
|
Image tmpImg = Toolkit.getDefaultToolkit().createImage(url);
|
|
if (tmpImg != null) {
|
|
image.setImage(tmpImg);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return image;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parses a length value, this is used internally, and never added
|
|
* to an AttributeSet or returned to the developer.
|
|
*/
|
|
static class LengthUnit implements Serializable {
|
|
static Hashtable<String, Float> lengthMapping = new Hashtable<String, Float>(6);
|
|
static Hashtable<String, Float> w3cLengthMapping = new Hashtable<String, Float>(6);
|
|
static {
|
|
lengthMapping.put("pt", new Float(1f));
|
|
// Not sure about 1.3, determined by experiementation.
|
|
lengthMapping.put("px", new Float(1.3f));
|
|
lengthMapping.put("mm", new Float(2.83464f));
|
|
lengthMapping.put("cm", new Float(28.3464f));
|
|
lengthMapping.put("pc", new Float(12f));
|
|
lengthMapping.put("in", new Float(72f));
|
|
int res = 72;
|
|
try {
|
|
res = Toolkit.getDefaultToolkit().getScreenResolution();
|
|
} catch (HeadlessException e) {
|
|
}
|
|
// mapping according to the CSS2 spec
|
|
w3cLengthMapping.put("pt", new Float(res/72f));
|
|
w3cLengthMapping.put("px", new Float(1f));
|
|
w3cLengthMapping.put("mm", new Float(res/25.4f));
|
|
w3cLengthMapping.put("cm", new Float(res/2.54f));
|
|
w3cLengthMapping.put("pc", new Float(res/6f));
|
|
w3cLengthMapping.put("in", new Float(res));
|
|
}
|
|
|
|
LengthUnit(String value, short defaultType, float defaultValue) {
|
|
parse(value, defaultType, defaultValue);
|
|
}
|
|
|
|
void parse(String value, short defaultType, float defaultValue) {
|
|
type = defaultType;
|
|
this.value = defaultValue;
|
|
|
|
int length = value.length();
|
|
if (length > 0 && value.charAt(length - 1) == '%') {
|
|
try {
|
|
this.value = Float.valueOf(value.substring(0, length - 1)).
|
|
floatValue() / 100.0f;
|
|
type = 1;
|
|
}
|
|
catch (NumberFormatException nfe) { }
|
|
}
|
|
if (length >= 2) {
|
|
units = value.substring(length - 2, length);
|
|
Float scale = lengthMapping.get(units);
|
|
if (scale != null) {
|
|
try {
|
|
this.value = Float.valueOf(value.substring(0,
|
|
length - 2)).floatValue();
|
|
type = 0;
|
|
}
|
|
catch (NumberFormatException nfe) { }
|
|
}
|
|
else if (units.equals("em") ||
|
|
units.equals("ex")) {
|
|
try {
|
|
this.value = Float.valueOf(value.substring(0,
|
|
length - 2)).floatValue();
|
|
type = 3;
|
|
}
|
|
catch (NumberFormatException nfe) { }
|
|
}
|
|
else if (value.equals("larger")) {
|
|
this.value = 2f;
|
|
type = 2;
|
|
}
|
|
else if (value.equals("smaller")) {
|
|
this.value = -2;
|
|
type = 2;
|
|
}
|
|
else {
|
|
// treat like points.
|
|
try {
|
|
this.value = Float.valueOf(value).floatValue();
|
|
type = 0;
|
|
} catch (NumberFormatException nfe) {}
|
|
}
|
|
}
|
|
else if (length > 0) {
|
|
// treat like points.
|
|
try {
|
|
this.value = Float.valueOf(value).floatValue();
|
|
type = 0;
|
|
} catch (NumberFormatException nfe) {}
|
|
}
|
|
}
|
|
|
|
float getValue(boolean w3cLengthUnits) {
|
|
Hashtable<String, Float> mapping = (w3cLengthUnits) ? w3cLengthMapping : lengthMapping;
|
|
float scale = 1;
|
|
if (units != null) {
|
|
Float scaleFloat = mapping.get(units);
|
|
if (scaleFloat != null) {
|
|
scale = scaleFloat.floatValue();
|
|
}
|
|
}
|
|
return this.value * scale;
|
|
|
|
}
|
|
|
|
static float getValue(float value, String units, Boolean w3cLengthUnits) {
|
|
Hashtable<String, Float> mapping = (w3cLengthUnits) ? w3cLengthMapping : lengthMapping;
|
|
float scale = 1;
|
|
if (units != null) {
|
|
Float scaleFloat = mapping.get(units);
|
|
if (scaleFloat != null) {
|
|
scale = scaleFloat.floatValue();
|
|
}
|
|
}
|
|
return value * scale;
|
|
}
|
|
|
|
public String toString() {
|
|
return type + " " + value;
|
|
}
|
|
|
|
// 0 - value indicates real value
|
|
// 1 - % value, value relative to depends upon key.
|
|
// 50% will have a value = .5
|
|
// 2 - add value to parent value.
|
|
// 3 - em/ex relative to font size of element (except for
|
|
// font-size, which is relative to parent).
|
|
short type;
|
|
float value;
|
|
String units = null;
|
|
|
|
|
|
static final short UNINITALIZED_LENGTH = (short)10;
|
|
}
|
|
|
|
|
|
/**
|
|
* Class used to parse font property. The font property is shorthand
|
|
* for the other font properties. This expands the properties, placing
|
|
* them in the attributeset.
|
|
*/
|
|
static class ShorthandFontParser {
|
|
/**
|
|
* Parses the shorthand font string <code>value</code>, placing the
|
|
* result in <code>attr</code>.
|
|
*/
|
|
static void parseShorthandFont(CSS css, String value,
|
|
MutableAttributeSet attr) {
|
|
// font is of the form:
|
|
// [ <font-style> || <font-variant> || <font-weight> ]? <font-size>
|
|
// [ / <line-height> ]? <font-family>
|
|
String[] strings = CSS.parseStrings(value);
|
|
int count = strings.length;
|
|
int index = 0;
|
|
// bitmask, 1 for style, 2 for variant, 3 for weight
|
|
short found = 0;
|
|
int maxC = Math.min(3, count);
|
|
|
|
// Check for font-style font-variant font-weight
|
|
while (index < maxC) {
|
|
if ((found & 1) == 0 && isFontStyle(strings[index])) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_STYLE,
|
|
strings[index++]);
|
|
found |= 1;
|
|
}
|
|
else if ((found & 2) == 0 && isFontVariant(strings[index])) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_VARIANT,
|
|
strings[index++]);
|
|
found |= 2;
|
|
}
|
|
else if ((found & 4) == 0 && isFontWeight(strings[index])) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_WEIGHT,
|
|
strings[index++]);
|
|
found |= 4;
|
|
}
|
|
else if (strings[index].equals("normal")) {
|
|
index++;
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
if ((found & 1) == 0) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_STYLE,
|
|
"normal");
|
|
}
|
|
if ((found & 2) == 0) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_VARIANT,
|
|
"normal");
|
|
}
|
|
if ((found & 4) == 0) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_WEIGHT,
|
|
"normal");
|
|
}
|
|
|
|
// string at index should be the font-size
|
|
if (index < count) {
|
|
String fontSize = strings[index];
|
|
int slashIndex = fontSize.indexOf('/');
|
|
|
|
if (slashIndex != -1) {
|
|
fontSize = fontSize.substring(0, slashIndex);
|
|
strings[index] = strings[index].substring(slashIndex);
|
|
}
|
|
else {
|
|
index++;
|
|
}
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_SIZE,
|
|
fontSize);
|
|
}
|
|
else {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_SIZE,
|
|
"medium");
|
|
}
|
|
|
|
// Check for line height
|
|
if (index < count && strings[index].startsWith("/")) {
|
|
String lineHeight = null;
|
|
if (strings[index].equals("/")) {
|
|
if (++index < count) {
|
|
lineHeight = strings[index++];
|
|
}
|
|
}
|
|
else {
|
|
lineHeight = strings[index++].substring(1);
|
|
}
|
|
// line height
|
|
if (lineHeight != null) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.LINE_HEIGHT,
|
|
lineHeight);
|
|
}
|
|
else {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.LINE_HEIGHT,
|
|
"normal");
|
|
}
|
|
}
|
|
else {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.LINE_HEIGHT,
|
|
"normal");
|
|
}
|
|
|
|
// remainder of strings are font-family
|
|
if (index < count) {
|
|
String family = strings[index++];
|
|
|
|
while (index < count) {
|
|
family += " " + strings[index++];
|
|
}
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_FAMILY,
|
|
family);
|
|
}
|
|
else {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.FONT_FAMILY,
|
|
Font.SANS_SERIF);
|
|
}
|
|
}
|
|
|
|
private static boolean isFontStyle(String string) {
|
|
return (string.equals("italic") ||
|
|
string.equals("oblique"));
|
|
}
|
|
|
|
private static boolean isFontVariant(String string) {
|
|
return (string.equals("small-caps"));
|
|
}
|
|
|
|
private static boolean isFontWeight(String string) {
|
|
if (string.equals("bold") || string.equals("bolder") ||
|
|
string.equals("italic") || string.equals("lighter")) {
|
|
return true;
|
|
}
|
|
// test for 100-900
|
|
return (string.length() == 3 &&
|
|
string.charAt(0) >= '1' && string.charAt(0) <= '9' &&
|
|
string.charAt(1) == '0' && string.charAt(2) == '0');
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Parses the background property into its intrinsic values.
|
|
*/
|
|
static class ShorthandBackgroundParser {
|
|
/**
|
|
* Parses the shorthand font string <code>value</code>, placing the
|
|
* result in <code>attr</code>.
|
|
*/
|
|
static void parseShorthandBackground(CSS css, String value,
|
|
MutableAttributeSet attr) {
|
|
String[] strings = parseStrings(value);
|
|
int count = strings.length;
|
|
int index = 0;
|
|
// bitmask: 0 for image, 1 repeat, 2 attachment, 3 position,
|
|
// 4 color
|
|
short found = 0;
|
|
|
|
while (index < count) {
|
|
String string = strings[index++];
|
|
if ((found & 1) == 0 && isImage(string)) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.
|
|
BACKGROUND_IMAGE, string);
|
|
found |= 1;
|
|
}
|
|
else if ((found & 2) == 0 && isRepeat(string)) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.
|
|
BACKGROUND_REPEAT, string);
|
|
found |= 2;
|
|
}
|
|
else if ((found & 4) == 0 && isAttachment(string)) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.
|
|
BACKGROUND_ATTACHMENT, string);
|
|
found |= 4;
|
|
}
|
|
else if ((found & 8) == 0 && isPosition(string)) {
|
|
if (index < count && isPosition(strings[index])) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.
|
|
BACKGROUND_POSITION,
|
|
string + " " +
|
|
strings[index++]);
|
|
}
|
|
else {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.
|
|
BACKGROUND_POSITION, string);
|
|
}
|
|
found |= 8;
|
|
}
|
|
else if ((found & 16) == 0 && isColor(string)) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.
|
|
BACKGROUND_COLOR, string);
|
|
found |= 16;
|
|
}
|
|
}
|
|
if ((found & 1) == 0) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.BACKGROUND_IMAGE,
|
|
null);
|
|
}
|
|
if ((found & 2) == 0) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.BACKGROUND_REPEAT,
|
|
"repeat");
|
|
}
|
|
if ((found & 4) == 0) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.
|
|
BACKGROUND_ATTACHMENT, "scroll");
|
|
}
|
|
if ((found & 8) == 0) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.
|
|
BACKGROUND_POSITION, null);
|
|
}
|
|
// Currently, there is no good way to express this.
|
|
/*
|
|
if ((found & 16) == 0) {
|
|
css.addInternalCSSValue(attr, CSS.Attribute.BACKGROUND_COLOR,
|
|
null);
|
|
}
|
|
*/
|
|
}
|
|
|
|
static boolean isImage(String string) {
|
|
return (string.startsWith("url(") && string.endsWith(")"));
|
|
}
|
|
|
|
static boolean isRepeat(String string) {
|
|
return (string.equals("repeat-x") || string.equals("repeat-y") ||
|
|
string.equals("repeat") || string.equals("no-repeat"));
|
|
}
|
|
|
|
static boolean isAttachment(String string) {
|
|
return (string.equals("fixed") || string.equals("scroll"));
|
|
}
|
|
|
|
static boolean isPosition(String string) {
|
|
return (string.equals("top") || string.equals("bottom") ||
|
|
string.equals("left") || string.equals("right") ||
|
|
string.equals("center") ||
|
|
(string.length() > 0 &&
|
|
Character.isDigit(string.charAt(0))));
|
|
}
|
|
|
|
static boolean isColor(String string) {
|
|
return (CSS.stringToColor(string) != null);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Used to parser margin and padding.
|
|
*/
|
|
static class ShorthandMarginParser {
|
|
/**
|
|
* Parses the shorthand margin/padding/border string
|
|
* <code>value</code>, placing the result in <code>attr</code>.
|
|
* <code>names</code> give the 4 instrinsic property names.
|
|
*/
|
|
static void parseShorthandMargin(CSS css, String value,
|
|
MutableAttributeSet attr,
|
|
CSS.Attribute[] names) {
|
|
String[] strings = parseStrings(value);
|
|
int count = strings.length;
|
|
int index = 0;
|
|
switch (count) {
|
|
case 0:
|
|
// empty string
|
|
return;
|
|
case 1:
|
|
// Identifies all values.
|
|
for (int counter = 0; counter < 4; counter++) {
|
|
css.addInternalCSSValue(attr, names[counter], strings[0]);
|
|
}
|
|
break;
|
|
case 2:
|
|
// 0 & 2 = strings[0], 1 & 3 = strings[1]
|
|
css.addInternalCSSValue(attr, names[0], strings[0]);
|
|
css.addInternalCSSValue(attr, names[2], strings[0]);
|
|
css.addInternalCSSValue(attr, names[1], strings[1]);
|
|
css.addInternalCSSValue(attr, names[3], strings[1]);
|
|
break;
|
|
case 3:
|
|
css.addInternalCSSValue(attr, names[0], strings[0]);
|
|
css.addInternalCSSValue(attr, names[1], strings[1]);
|
|
css.addInternalCSSValue(attr, names[2], strings[2]);
|
|
css.addInternalCSSValue(attr, names[3], strings[1]);
|
|
break;
|
|
default:
|
|
for (int counter = 0; counter < 4; counter++) {
|
|
css.addInternalCSSValue(attr, names[counter],
|
|
strings[counter]);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static class ShorthandBorderParser {
|
|
static Attribute[] keys = {
|
|
Attribute.BORDER_TOP, Attribute.BORDER_RIGHT,
|
|
Attribute.BORDER_BOTTOM, Attribute.BORDER_LEFT,
|
|
};
|
|
|
|
static void parseShorthandBorder(MutableAttributeSet attributes,
|
|
CSS.Attribute key, String value) {
|
|
Object[] parts = new Object[CSSBorder.PARSERS.length];
|
|
String[] strings = parseStrings(value);
|
|
for (String s : strings) {
|
|
boolean valid = false;
|
|
for (int i = 0; i < parts.length; i++) {
|
|
Object v = CSSBorder.PARSERS[i].parseCssValue(s);
|
|
if (v != null) {
|
|
if (parts[i] == null) {
|
|
parts[i] = v;
|
|
valid = true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (!valid) {
|
|
// Part is non-parseable or occurred more than once.
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Unspecified parts get default values.
|
|
for (int i = 0; i < parts.length; i++) {
|
|
if (parts[i] == null) {
|
|
parts[i] = CSSBorder.DEFAULTS[i];
|
|
}
|
|
}
|
|
|
|
// Dispatch collected values to individual properties.
|
|
for (int i = 0; i < keys.length; i++) {
|
|
if ((key == Attribute.BORDER) || (key == keys[i])) {
|
|
for (int k = 0; k < parts.length; k++) {
|
|
attributes.addAttribute(
|
|
CSSBorder.ATTRIBUTES[k][i], parts[k]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Calculate the requirements needed to tile the requirements
|
|
* given by the iterator that would be tiled. The calculation
|
|
* takes into consideration margin and border spacing.
|
|
*/
|
|
static SizeRequirements calculateTiledRequirements(LayoutIterator iter, SizeRequirements r) {
|
|
long minimum = 0;
|
|
long maximum = 0;
|
|
long preferred = 0;
|
|
int lastMargin = 0;
|
|
int totalSpacing = 0;
|
|
int n = iter.getCount();
|
|
for (int i = 0; i < n; i++) {
|
|
iter.setIndex(i);
|
|
int margin0 = lastMargin;
|
|
int margin1 = (int) iter.getLeadingCollapseSpan();
|
|
totalSpacing += Math.max(margin0, margin1);
|
|
preferred += (int) iter.getPreferredSpan(0);
|
|
minimum += iter.getMinimumSpan(0);
|
|
maximum += iter.getMaximumSpan(0);
|
|
|
|
lastMargin = (int) iter.getTrailingCollapseSpan();
|
|
}
|
|
totalSpacing += lastMargin;
|
|
totalSpacing += 2 * iter.getBorderWidth();
|
|
|
|
// adjust for the spacing area
|
|
minimum += totalSpacing;
|
|
preferred += totalSpacing;
|
|
maximum += totalSpacing;
|
|
|
|
// set return value
|
|
if (r == null) {
|
|
r = new SizeRequirements();
|
|
}
|
|
r.minimum = (minimum > Integer.MAX_VALUE) ? Integer.MAX_VALUE : (int)minimum;
|
|
r.preferred = (preferred > Integer.MAX_VALUE) ? Integer.MAX_VALUE :(int) preferred;
|
|
r.maximum = (maximum > Integer.MAX_VALUE) ? Integer.MAX_VALUE :(int) maximum;
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* Calculate a tiled layout for the given iterator.
|
|
* This should be done collapsing the neighboring
|
|
* margins to be a total of the maximum of the two
|
|
* neighboring margin areas as described in the CSS spec.
|
|
*/
|
|
static void calculateTiledLayout(LayoutIterator iter, int targetSpan) {
|
|
|
|
/*
|
|
* first pass, calculate the preferred sizes, adjustments needed because
|
|
* of margin collapsing, and the flexibility to adjust the sizes.
|
|
*/
|
|
long preferred = 0;
|
|
long currentPreferred;
|
|
int lastMargin = 0;
|
|
int totalSpacing = 0;
|
|
int n = iter.getCount();
|
|
int adjustmentWeightsCount = LayoutIterator.WorstAdjustmentWeight + 1;
|
|
//max gain we can get adjusting elements with adjustmentWeight <= i
|
|
long gain[] = new long[adjustmentWeightsCount];
|
|
//max loss we can get adjusting elements with adjustmentWeight <= i
|
|
long loss[] = new long[adjustmentWeightsCount];
|
|
|
|
for (int i = 0; i < adjustmentWeightsCount; i++) {
|
|
gain[i] = loss[i] = 0;
|
|
}
|
|
for (int i = 0; i < n; i++) {
|
|
iter.setIndex(i);
|
|
int margin0 = lastMargin;
|
|
int margin1 = (int) iter.getLeadingCollapseSpan();
|
|
|
|
iter.setOffset(Math.max(margin0, margin1));
|
|
totalSpacing += iter.getOffset();
|
|
|
|
currentPreferred = (long)iter.getPreferredSpan(targetSpan);
|
|
iter.setSpan((int) currentPreferred);
|
|
preferred += currentPreferred;
|
|
gain[iter.getAdjustmentWeight()] +=
|
|
(long)iter.getMaximumSpan(targetSpan) - currentPreferred;
|
|
loss[iter.getAdjustmentWeight()] +=
|
|
currentPreferred - (long)iter.getMinimumSpan(targetSpan);
|
|
lastMargin = (int) iter.getTrailingCollapseSpan();
|
|
}
|
|
totalSpacing += lastMargin;
|
|
totalSpacing += 2 * iter.getBorderWidth();
|
|
|
|
for (int i = 1; i < adjustmentWeightsCount; i++) {
|
|
gain[i] += gain[i - 1];
|
|
loss[i] += loss[i - 1];
|
|
}
|
|
|
|
/*
|
|
* Second pass, expand or contract by as much as possible to reach
|
|
* the target span. This takes the margin collapsing into account
|
|
* prior to adjusting the span.
|
|
*/
|
|
|
|
// determine the adjustment to be made
|
|
int allocated = targetSpan - totalSpacing;
|
|
long desiredAdjustment = allocated - preferred;
|
|
long adjustmentsArray[] = (desiredAdjustment > 0) ? gain : loss;
|
|
desiredAdjustment = Math.abs(desiredAdjustment);
|
|
int adjustmentLevel = 0;
|
|
for (;adjustmentLevel <= LayoutIterator.WorstAdjustmentWeight;
|
|
adjustmentLevel++) {
|
|
// adjustmentsArray[] is sorted. I do not bother about
|
|
// binary search though
|
|
if (adjustmentsArray[adjustmentLevel] >= desiredAdjustment) {
|
|
break;
|
|
}
|
|
}
|
|
float adjustmentFactor = 0.0f;
|
|
if (adjustmentLevel <= LayoutIterator.WorstAdjustmentWeight) {
|
|
desiredAdjustment -= (adjustmentLevel > 0) ?
|
|
adjustmentsArray[adjustmentLevel - 1] : 0;
|
|
if (desiredAdjustment != 0) {
|
|
float maximumAdjustment =
|
|
adjustmentsArray[adjustmentLevel] -
|
|
((adjustmentLevel > 0) ?
|
|
adjustmentsArray[adjustmentLevel - 1] : 0
|
|
);
|
|
adjustmentFactor = desiredAdjustment / maximumAdjustment;
|
|
}
|
|
}
|
|
// make the adjustments
|
|
int totalOffset = (int)iter.getBorderWidth();
|
|
for (int i = 0; i < n; i++) {
|
|
iter.setIndex(i);
|
|
iter.setOffset( iter.getOffset() + totalOffset);
|
|
if (iter.getAdjustmentWeight() < adjustmentLevel) {
|
|
iter.setSpan((int)
|
|
((allocated > preferred) ?
|
|
Math.floor(iter.getMaximumSpan(targetSpan)) :
|
|
Math.ceil(iter.getMinimumSpan(targetSpan))
|
|
)
|
|
);
|
|
} else if (iter.getAdjustmentWeight() == adjustmentLevel) {
|
|
int availableSpan = (allocated > preferred) ?
|
|
(int) iter.getMaximumSpan(targetSpan) - iter.getSpan() :
|
|
iter.getSpan() - (int) iter.getMinimumSpan(targetSpan);
|
|
int adj = (int)Math.floor(adjustmentFactor * availableSpan);
|
|
iter.setSpan(iter.getSpan() +
|
|
((allocated > preferred) ? adj : -adj));
|
|
}
|
|
totalOffset = (int) Math.min((long) iter.getOffset() +
|
|
(long) iter.getSpan(),
|
|
Integer.MAX_VALUE);
|
|
}
|
|
|
|
// while rounding we could lose several pixels.
|
|
int roundError = targetSpan - totalOffset -
|
|
(int)iter.getTrailingCollapseSpan() -
|
|
(int)iter.getBorderWidth();
|
|
int adj = (roundError > 0) ? 1 : -1;
|
|
roundError *= adj;
|
|
|
|
boolean canAdjust = true;
|
|
while (roundError > 0 && canAdjust) {
|
|
// check for infinite loop
|
|
canAdjust = false;
|
|
int offsetAdjust = 0;
|
|
// try to distribute roundError. one pixel per cell
|
|
for (int i = 0; i < n; i++) {
|
|
iter.setIndex(i);
|
|
iter.setOffset(iter.getOffset() + offsetAdjust);
|
|
int curSpan = iter.getSpan();
|
|
if (roundError > 0) {
|
|
int boundGap = (adj > 0) ?
|
|
(int)Math.floor(iter.getMaximumSpan(targetSpan)) - curSpan :
|
|
curSpan - (int)Math.ceil(iter.getMinimumSpan(targetSpan));
|
|
if (boundGap >= 1) {
|
|
canAdjust = true;
|
|
iter.setSpan(curSpan + adj);
|
|
offsetAdjust += adj;
|
|
roundError--;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* An iterator to express the requirements to use when computing
|
|
* layout.
|
|
*/
|
|
interface LayoutIterator {
|
|
|
|
void setOffset(int offs);
|
|
|
|
int getOffset();
|
|
|
|
void setSpan(int span);
|
|
|
|
int getSpan();
|
|
|
|
int getCount();
|
|
|
|
void setIndex(int i);
|
|
|
|
float getMinimumSpan(float parentSpan);
|
|
|
|
float getPreferredSpan(float parentSpan);
|
|
|
|
float getMaximumSpan(float parentSpan);
|
|
|
|
int getAdjustmentWeight(); //0 is the best weight WorstAdjustmentWeight is a worst one
|
|
|
|
//float getAlignment();
|
|
|
|
float getBorderWidth();
|
|
|
|
float getLeadingCollapseSpan();
|
|
|
|
float getTrailingCollapseSpan();
|
|
public static final int WorstAdjustmentWeight = 2;
|
|
}
|
|
|
|
//
|
|
// Serialization support
|
|
//
|
|
|
|
private void writeObject(java.io.ObjectOutputStream s)
|
|
throws IOException
|
|
{
|
|
s.defaultWriteObject();
|
|
|
|
// Determine what values in valueConvertor need to be written out.
|
|
Enumeration keys = valueConvertor.keys();
|
|
s.writeInt(valueConvertor.size());
|
|
if (keys != null) {
|
|
while (keys.hasMoreElements()) {
|
|
Object key = keys.nextElement();
|
|
Object value = valueConvertor.get(key);
|
|
if (!(key instanceof Serializable) &&
|
|
(key = StyleContext.getStaticAttributeKey(key)) == null) {
|
|
// Should we throw an exception here?
|
|
key = null;
|
|
value = null;
|
|
}
|
|
else if (!(value instanceof Serializable) &&
|
|
(value = StyleContext.getStaticAttributeKey(value)) == null){
|
|
// Should we throw an exception here?
|
|
key = null;
|
|
value = null;
|
|
}
|
|
s.writeObject(key);
|
|
s.writeObject(value);
|
|
}
|
|
}
|
|
}
|
|
|
|
private void readObject(ObjectInputStream s)
|
|
throws ClassNotFoundException, IOException
|
|
{
|
|
s.defaultReadObject();
|
|
// Reconstruct the hashtable.
|
|
int numValues = s.readInt();
|
|
valueConvertor = new Hashtable<Object, Object>();
|
|
while (numValues-- > 0) {
|
|
Object key = s.readObject();
|
|
Object value = s.readObject();
|
|
Object staticKey = StyleContext.getStaticAttribute(key);
|
|
if (staticKey != null) {
|
|
key = staticKey;
|
|
}
|
|
Object staticValue = StyleContext.getStaticAttribute(value);
|
|
if (staticValue != null) {
|
|
value = staticValue;
|
|
}
|
|
if (key != null && value != null) {
|
|
valueConvertor.put(key, value);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* we need StyleSheet for resolving lenght units. (see
|
|
* isW3CLengthUnits)
|
|
* we can not pass stylesheet for handling relative sizes. (do not
|
|
* think changing public API is necessary)
|
|
* CSS is not likely to be accessed from more then one thread.
|
|
* Having local storage for StyleSheet for resolving relative
|
|
* sizes is safe
|
|
*
|
|
* idk 08/30/2004
|
|
*/
|
|
private StyleSheet getStyleSheet(StyleSheet ss) {
|
|
if (ss != null) {
|
|
styleSheet = ss;
|
|
}
|
|
return styleSheet;
|
|
}
|
|
//
|
|
// Instance variables
|
|
//
|
|
|
|
/** Maps from CSS key to CssValue. */
|
|
private transient Hashtable<Object, Object> valueConvertor;
|
|
|
|
/** Size used for relative units. */
|
|
private int baseFontSize;
|
|
|
|
private transient StyleSheet styleSheet = null;
|
|
|
|
static int baseFontSizeIndex = 3;
|
|
}
|