422 lines
12 KiB
Java
422 lines
12 KiB
Java
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/* CSSBorder.java -- A border for rendering CSS border styles
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing.text.html;
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import gnu.javax.swing.text.html.css.BorderWidth;
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import gnu.javax.swing.text.html.css.CSSColor;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Graphics;
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import java.awt.Insets;
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import javax.swing.border.Border;
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import javax.swing.text.AttributeSet;
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/**
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* A border implementation to render CSS border styles.
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*/
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class CSSBorder
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implements Border
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{
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/**
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* The CSS border styles.
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*/
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private static final int STYLE_NOT_SET = -1;
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private static final int STYLE_NONE = 0;
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private static final int STYLE_HIDDEN = 1;
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private static final int STYLE_DOTTED = 2;
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private static final int STYLE_DASHED = 3;
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private static final int STYLE_SOLID = 4;
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private static final int STYLE_DOUBLE = 5;
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private static final int STYLE_GROOVE = 6;
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private static final int STYLE_RIDGE = 7;
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private static final int STYLE_INSET = 8;
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private static final int STYLE_OUTSET = 9;
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/**
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* The left insets.
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*/
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private int left;
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/**
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* The right insets.
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*/
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private int right;
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/**
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* The top insets.
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*/
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private int top;
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/**
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* The bottom insets.
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*/
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private int bottom;
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/**
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* The border style on the left.
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*/
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private int leftStyle;
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/**
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* The border style on the right.
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*/
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private int rightStyle;
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/**
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* The border style on the top.
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*/
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private int topStyle;
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/**
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* The color for the top border.
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*/
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private Color topColor;
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/**
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* The color for the bottom border.
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*/
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private Color bottomColor;
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/**
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* The color for the left border.
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*/
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private Color leftColor;
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/**
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* The color for the right border.
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*/
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private Color rightColor;
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/**
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* The border style on the bottom.
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*/
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private int bottomStyle;
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/**
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* Creates a new CSS border and fetches its attributes from the specified
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* attribute set.
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*
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* @param atts the attribute set that contains the border spec
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*/
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CSSBorder(AttributeSet atts, StyleSheet ss)
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{
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// Determine the border styles.
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int style = getBorderStyle(atts, CSS.Attribute.BORDER_STYLE);
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if (style == STYLE_NOT_SET)
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style = STYLE_NONE; // Default to none.
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topStyle = bottomStyle = leftStyle = rightStyle = style;
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style = getBorderStyle(atts, CSS.Attribute.BORDER_TOP_STYLE);
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if (style != STYLE_NOT_SET)
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topStyle = style;
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style = getBorderStyle(atts, CSS.Attribute.BORDER_BOTTOM_STYLE);
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if (style != STYLE_NOT_SET)
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bottomStyle = style;
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style = getBorderStyle(atts, CSS.Attribute.BORDER_LEFT_STYLE);
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if (style != STYLE_NOT_SET)
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leftStyle = style;
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style = getBorderStyle(atts, CSS.Attribute.BORDER_RIGHT_STYLE);
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if (style != STYLE_NOT_SET)
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rightStyle = style;
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// Determine the border colors.
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Color color = getBorderColor(atts, CSS.Attribute.BORDER_COLOR);
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if (color == null)
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color = Color.BLACK;
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topColor = bottomColor = leftColor = rightColor = color;
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color = getBorderColor(atts, CSS.Attribute.BORDER_TOP_COLOR);
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if (color != null)
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topColor = color;
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color = getBorderColor(atts, CSS.Attribute.BORDER_BOTTOM_COLOR);
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if (color != null)
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bottomColor = color;
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color = getBorderColor(atts, CSS.Attribute.BORDER_LEFT_COLOR);
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if (color != null)
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leftColor = color;
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color = getBorderColor(atts, CSS.Attribute.BORDER_RIGHT_COLOR);
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if (color != null)
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rightColor = color;
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// Determine the border widths.
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int width = getBorderWidth(atts, CSS.Attribute.BORDER_WIDTH, ss);
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if (width == -1)
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width = 0;
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top = bottom = left = right = width;
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width = getBorderWidth(atts, CSS.Attribute.BORDER_TOP_WIDTH, ss);
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if (width >= 0)
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top = width;
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width = getBorderWidth(atts, CSS.Attribute.BORDER_BOTTOM_WIDTH, ss);
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if (width >= 0)
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bottom = width;
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width = getBorderWidth(atts, CSS.Attribute.BORDER_LEFT_WIDTH, ss);
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if (width >= 0)
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left = width;
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width = getBorderWidth(atts, CSS.Attribute.BORDER_RIGHT_WIDTH, ss);
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if (width >= 0)
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right = width;
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}
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/**
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* Determines the border style for a given CSS attribute.
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*
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* @param atts the attribute set
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* @param key the CSS key
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*
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* @return the border style according to the constants defined in this class
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*/
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private int getBorderStyle(AttributeSet atts, CSS.Attribute key)
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{
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int style = STYLE_NOT_SET;
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Object o = atts.getAttribute(key);
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if (o != null)
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{
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String cssStyle = o.toString();
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if (cssStyle.equals("none"))
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style = STYLE_NONE;
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else if (cssStyle.equals("hidden"))
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style = STYLE_HIDDEN;
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else if (cssStyle.equals("dotted"))
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style = STYLE_DOTTED;
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else if (cssStyle.equals("dashed"))
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style = STYLE_DASHED;
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else if (cssStyle.equals("solid"))
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style = STYLE_SOLID;
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else if (cssStyle.equals("double"))
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style = STYLE_DOUBLE;
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else if (cssStyle.equals("groove"))
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style = STYLE_GROOVE;
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else if (cssStyle.equals("ridge"))
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style = STYLE_RIDGE;
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else if (cssStyle.equals("inset"))
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style = STYLE_INSET;
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else if (cssStyle.equals("outset"))
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style = STYLE_OUTSET;
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}
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return style;
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}
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/**
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* Determines the border color for the specified key.
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*
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* @param atts the attribute set from which to fetch the color
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* @param key the CSS key
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*
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* @return the border color
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*/
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private Color getBorderColor(AttributeSet atts, CSS.Attribute key)
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{
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Object o = atts.getAttribute(key);
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Color color = null;
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if (o instanceof CSSColor)
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{
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CSSColor cssColor = (CSSColor) o;
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color = cssColor.getValue();
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}
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return color;
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}
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/**
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* Returns the width for the specified key.
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*
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* @param atts the attributes to fetch the width from
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* @param key the CSS key
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*
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* @return the width, or -1 of none has been set
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*/
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private int getBorderWidth(AttributeSet atts, CSS.Attribute key,
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StyleSheet ss)
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{
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int width = -1;
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Object o = atts.getAttribute(key);
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if (o instanceof BorderWidth)
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{
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BorderWidth w = (BorderWidth) o;
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w.setFontBases(ss.getEMBase(atts), ss.getEXBase(atts));
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width = (int) ((BorderWidth) o).getValue();
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}
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return width;
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}
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/**
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* Returns the border insets.
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*/
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public Insets getBorderInsets(Component c)
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{
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return new Insets(top, left, bottom, right);
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}
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/**
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* CSS borders are generally opaque so return true here.
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*/
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public boolean isBorderOpaque()
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{
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return true;
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}
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public void paintBorder(Component c, Graphics g, int x, int y, int width,
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int height)
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{
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// Top border.
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paintBorderLine(g, x, y + top / 2, x + width, y + top / 2, topStyle, top,
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topColor, false);
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// Left border.
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paintBorderLine(g, x + left / 2, y, x + left / 2, y + height, leftStyle,
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left, leftColor, true);
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// Bottom border.
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paintBorderLine(g, x, y + height - bottom / 2, x + width,
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y + height - bottom / 2, topStyle, bottom, bottomColor,
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false);
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// Right border.
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paintBorderLine(g, x + width - right / 2, y, x + width - right / 2,
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y + height, topStyle, right, rightColor, true);
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}
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private void paintBorderLine(Graphics g, int x1, int y1, int x2, int y2,
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int style, int width, Color color,
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boolean vertical)
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{
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switch (style)
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{
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case STYLE_DOTTED:
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paintDottedLine(g, x1, y1, x2, y2, width, color, vertical);
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break;
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case STYLE_DASHED:
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paintDashedLine(g, x1, y1, x2, y2, width, color, vertical);
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break;
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case STYLE_SOLID:
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paintSolidLine(g, x1, y1, x2, y2, width, color, vertical);
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break;
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case STYLE_DOUBLE:
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paintDoubleLine(g, x1, y1, x2, y2, width, color, vertical);
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break;
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case STYLE_GROOVE:
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paintGrooveLine(g, x1, y1, x2, y2, width, color, vertical);
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break;
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case STYLE_RIDGE:
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paintRidgeLine(g, x1, y1, x2, y2, width, color, vertical);
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break;
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case STYLE_OUTSET:
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paintOutsetLine(g, x1, y1, x2, y2, width, color, vertical);
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break;
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case STYLE_INSET:
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paintInsetLine(g, x1, y1, x2, y2, width, color, vertical);
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break;
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case STYLE_NONE:
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case STYLE_HIDDEN:
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default:
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// Nothing to do in these cases.
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}
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}
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private void paintDottedLine(Graphics g, int x1, int y1, int x2, int y2,
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int width, Color color, boolean vertical)
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{
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// FIXME: Implement this.
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paintSolidLine(g, x1, y1, x2, y2, width, color, vertical);
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}
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private void paintDashedLine(Graphics g, int x1, int y1, int x2, int y2,
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int width, Color color, boolean vertical)
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{
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// FIXME: Implement this.
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paintSolidLine(g, x1, y1, x2, y2, width, color, vertical);
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}
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private void paintSolidLine(Graphics g, int x1, int y1, int x2, int y2,
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int width, Color color, boolean vertical)
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{
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int x = Math.min(x1, x2);
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int y = Math.min(y1, y1);
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int w = Math.abs(x2 - x1);
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int h = Math.abs(y2 - y1);
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if (vertical)
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{
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w = width;
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x -= width / 2;
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}
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else
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{
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h = width;
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y -= width / 2;
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}
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g.setColor(color);
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g.fillRect(x, y, w, h);
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}
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private void paintDoubleLine(Graphics g, int x1, int y1, int x2, int y2,
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int width, Color color, boolean vertical)
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||
|
|
{
|
||
|
|
// FIXME: Implement this.
|
||
|
|
paintSolidLine(g, x1, y1, x2, y2, width, color, vertical);
|
||
|
|
}
|
||
|
|
|
||
|
|
private void paintGrooveLine(Graphics g, int x1, int y1, int x2, int y2,
|
||
|
|
int width, Color color, boolean vertical)
|
||
|
|
{
|
||
|
|
// FIXME: Implement this.
|
||
|
|
paintSolidLine(g, x1, y1, x2, y2, width, color, vertical);
|
||
|
|
}
|
||
|
|
|
||
|
|
private void paintRidgeLine(Graphics g, int x1, int y1, int x2, int y2,
|
||
|
|
int width, Color color, boolean vertical)
|
||
|
|
{
|
||
|
|
// FIXME: Implement this.
|
||
|
|
paintSolidLine(g, x1, y1, x2, y2, width, color, vertical);
|
||
|
|
}
|
||
|
|
|
||
|
|
private void paintOutsetLine(Graphics g, int x1, int y1, int x2, int y2,
|
||
|
|
int width, Color color, boolean vertical)
|
||
|
|
{
|
||
|
|
// FIXME: Implement this.
|
||
|
|
paintSolidLine(g, x1, y1, x2, y2, width, color, vertical);
|
||
|
|
}
|
||
|
|
|
||
|
|
private void paintInsetLine(Graphics g, int x1, int y1, int x2, int y2,
|
||
|
|
int width, Color color, boolean vertical)
|
||
|
|
{
|
||
|
|
// FIXME: Implement this.
|
||
|
|
paintSolidLine(g, x1, y1, x2, y2, width, color, vertical);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|