author | yan |
Tue, 24 Sep 2013 17:04:47 +0400 | |
changeset 20158 | 1c5d22e5b898 |
parent 20103 | f640c22218a3 |
child 21278 | ef8a3a2a72f2 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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* Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package javax.swing.text; |
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import java.util.Arrays; |
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import java.awt.*; |
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import java.awt.font.TextAttribute; |
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import javax.swing.event.*; |
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import javax.swing.SizeRequirements; |
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/** |
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* View of a simple line-wrapping paragraph that supports |
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* multiple fonts, colors, components, icons, etc. It is |
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* basically a vertical box with a margin around it. The |
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* contents of the box are a bunch of rows which are special |
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* horizontal boxes. This view creates a collection of |
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* views that represent the child elements of the paragraph |
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* element. Each of these views are placed into a row |
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* directly if they will fit, otherwise the <code>breakView</code> |
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* method is called to try and carve the view into pieces |
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* that fit. |
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* |
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* @author Timothy Prinzing |
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* @author Scott Violet |
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* @author Igor Kushnirskiy |
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* @see View |
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*/ |
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public class ParagraphView extends FlowView implements TabExpander { |
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||
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/** |
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* Constructs a <code>ParagraphView</code> for the given element. |
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* |
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* @param elem the element that this view is responsible for |
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*/ |
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public ParagraphView(Element elem) { |
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super(elem, View.Y_AXIS); |
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setPropertiesFromAttributes(); |
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Document doc = elem.getDocument(); |
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Object i18nFlag = doc.getProperty(AbstractDocument.I18NProperty); |
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if ((i18nFlag != null) && i18nFlag.equals(Boolean.TRUE)) { |
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try { |
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64 |
if (i18nStrategy == null) { |
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// the classname should probably come from a property file. |
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String classname = "javax.swing.text.TextLayoutStrategy"; |
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ClassLoader loader = getClass().getClassLoader(); |
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if (loader != null) { |
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i18nStrategy = loader.loadClass(classname); |
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} else { |
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i18nStrategy = Class.forName(classname); |
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} |
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} |
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Object o = i18nStrategy.newInstance(); |
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if (o instanceof FlowStrategy) { |
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strategy = (FlowStrategy) o; |
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} |
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} catch (Throwable e) { |
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throw new StateInvariantError("ParagraphView: Can't create i18n strategy: " |
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+ e.getMessage()); |
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} |
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} |
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} |
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/** |
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* Sets the type of justification. |
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* |
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* @param j one of the following values: |
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* <ul> |
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* <li><code>StyleConstants.ALIGN_LEFT</code> |
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* <li><code>StyleConstants.ALIGN_CENTER</code> |
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* <li><code>StyleConstants.ALIGN_RIGHT</code> |
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* </ul> |
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*/ |
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protected void setJustification(int j) { |
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justification = j; |
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} |
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/** |
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* Sets the line spacing. |
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* |
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* @param ls the value is a factor of the line hight |
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*/ |
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protected void setLineSpacing(float ls) { |
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lineSpacing = ls; |
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} |
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/** |
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* Sets the indent on the first line. |
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* |
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* @param fi the value in points |
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*/ |
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protected void setFirstLineIndent(float fi) { |
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firstLineIndent = (int) fi; |
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} |
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117 |
/** |
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* Set the cached properties from the attributes. |
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*/ |
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protected void setPropertiesFromAttributes() { |
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AttributeSet attr = getAttributes(); |
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if (attr != null) { |
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setParagraphInsets(attr); |
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Integer a = (Integer)attr.getAttribute(StyleConstants.Alignment); |
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int alignment; |
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if (a == null) { |
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Document doc = getElement().getDocument(); |
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Object o = doc.getProperty(TextAttribute.RUN_DIRECTION); |
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if ((o != null) && o.equals(TextAttribute.RUN_DIRECTION_RTL)) { |
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alignment = StyleConstants.ALIGN_RIGHT; |
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} else { |
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alignment = StyleConstants.ALIGN_LEFT; |
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} |
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} else { |
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alignment = a.intValue(); |
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} |
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setJustification(alignment); |
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setLineSpacing(StyleConstants.getLineSpacing(attr)); |
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setFirstLineIndent(StyleConstants.getFirstLineIndent(attr)); |
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} |
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} |
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143 |
/** |
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* Returns the number of views that this view is |
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* responsible for. |
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* The child views of the paragraph are rows which |
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* have been used to arrange pieces of the <code>View</code>s |
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* that represent the child elements. This is the number |
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* of views that have been tiled in two dimensions, |
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* and should be equivalent to the number of child elements |
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* to the element this view is responsible for. |
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* |
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* @return the number of views that this <code>ParagraphView</code> |
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* is responsible for |
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*/ |
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protected int getLayoutViewCount() { |
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return layoutPool.getViewCount(); |
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} |
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/** |
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* Returns the view at a given <code>index</code>. |
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* The child views of the paragraph are rows which |
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* have been used to arrange pieces of the <code>Views</code> |
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* that represent the child elements. This methods returns |
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* the view responsible for the child element index |
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* (prior to breaking). These are the Views that were |
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* produced from a factory (to represent the child |
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* elements) and used for layout. |
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* |
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* @param index the <code>index</code> of the desired view |
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* @return the view at <code>index</code> |
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*/ |
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protected View getLayoutView(int index) { |
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return layoutPool.getView(index); |
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} |
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/** |
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* Returns the next visual position for the cursor, in |
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* either the east or west direction. |
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* Overridden from <code>CompositeView</code>. |
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* @param pos position into the model |
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* @param b either <code>Position.Bias.Forward</code> or |
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* <code>Position.Bias.Backward</code> |
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* @param a the allocated region to render into |
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* @param direction either <code>SwingConstants.NORTH</code> |
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* or <code>SwingConstants.SOUTH</code> |
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* @param biasRet an array containing the bias that were checked |
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* in this method |
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* @return the location in the model that represents the |
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* next location visual position |
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*/ |
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protected int getNextNorthSouthVisualPositionFrom(int pos, Position.Bias b, |
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Shape a, int direction, |
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Position.Bias[] biasRet) |
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throws BadLocationException { |
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int vIndex; |
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if(pos == -1) { |
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vIndex = (direction == NORTH) ? |
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getViewCount() - 1 : 0; |
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} |
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else { |
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if(b == Position.Bias.Backward && pos > 0) { |
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vIndex = getViewIndexAtPosition(pos - 1); |
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} |
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else { |
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vIndex = getViewIndexAtPosition(pos); |
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} |
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if(direction == NORTH) { |
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if(vIndex == 0) { |
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return -1; |
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} |
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vIndex--; |
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} |
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else if(++vIndex >= getViewCount()) { |
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return -1; |
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} |
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} |
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// vIndex gives index of row to look in. |
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JTextComponent text = (JTextComponent)getContainer(); |
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Caret c = text.getCaret(); |
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Point magicPoint; |
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magicPoint = (c != null) ? c.getMagicCaretPosition() : null; |
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int x; |
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if(magicPoint == null) { |
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Shape posBounds; |
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try { |
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posBounds = text.getUI().modelToView(text, pos, b); |
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} catch (BadLocationException exc) { |
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posBounds = null; |
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} |
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if(posBounds == null) { |
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x = 0; |
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} |
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else { |
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x = posBounds.getBounds().x; |
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} |
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} |
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else { |
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x = magicPoint.x; |
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} |
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return getClosestPositionTo(pos, b, a, direction, biasRet, vIndex, x); |
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} |
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244 |
/** |
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* Returns the closest model position to <code>x</code>. |
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* <code>rowIndex</code> gives the index of the view that corresponds |
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* that should be looked in. |
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* @param pos position into the model |
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* @param a the allocated region to render into |
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* @param direction one of the following values: |
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* <ul> |
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252 |
* <li><code>SwingConstants.NORTH</code> |
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* <li><code>SwingConstants.SOUTH</code> |
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254 |
* </ul> |
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255 |
* @param biasRet an array containing the bias that were checked |
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* in this method |
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* @param rowIndex the index of the view |
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258 |
* @param x the x coordinate of interest |
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* @return the closest model position to <code>x</code> |
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*/ |
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// NOTE: This will not properly work if ParagraphView contains |
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// other ParagraphViews. It won't raise, but this does not message |
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// the children views with getNextVisualPositionFrom. |
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protected int getClosestPositionTo(int pos, Position.Bias b, Shape a, |
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int direction, Position.Bias[] biasRet, |
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int rowIndex, int x) |
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throws BadLocationException { |
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JTextComponent text = (JTextComponent)getContainer(); |
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Document doc = getDocument(); |
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View row = getView(rowIndex); |
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int lastPos = -1; |
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// This could be made better to check backward positions too. |
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biasRet[0] = Position.Bias.Forward; |
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for(int vc = 0, numViews = row.getViewCount(); vc < numViews; vc++) { |
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View v = row.getView(vc); |
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276 |
int start = v.getStartOffset(); |
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malenkov
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9212
diff
changeset
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277 |
boolean ltr = AbstractDocument.isLeftToRight(doc, start, start + 1); |
2 | 278 |
if(ltr) { |
279 |
lastPos = start; |
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for(int end = v.getEndOffset(); lastPos < end; lastPos++) { |
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float xx = text.modelToView(lastPos).getBounds().x; |
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if(xx >= x) { |
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while (++lastPos < end && |
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text.modelToView(lastPos).getBounds().x == xx) { |
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} |
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return --lastPos; |
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} |
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} |
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lastPos--; |
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} |
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else { |
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for(lastPos = v.getEndOffset() - 1; lastPos >= start; |
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293 |
lastPos--) { |
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294 |
float xx = text.modelToView(lastPos).getBounds().x; |
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295 |
if(xx >= x) { |
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296 |
while (--lastPos >= start && |
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297 |
text.modelToView(lastPos).getBounds().x == xx) { |
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298 |
} |
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299 |
return ++lastPos; |
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300 |
} |
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301 |
} |
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302 |
lastPos++; |
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303 |
} |
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304 |
} |
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305 |
if(lastPos == -1) { |
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306 |
return getStartOffset(); |
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307 |
} |
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308 |
return lastPos; |
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} |
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310 |
||
311 |
/** |
|
312 |
* Determines in which direction the next view lays. |
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313 |
* Consider the <code>View</code> at index n. |
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314 |
* Typically the <code>View</code>s are layed out |
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315 |
* from left to right, so that the <code>View</code> |
|
316 |
* to the EAST will be at index n + 1, and the |
|
317 |
* <code>View</code> to the WEST will be at index n - 1. |
|
318 |
* In certain situations, such as with bidirectional text, |
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319 |
* it is possible that the <code>View</code> to EAST is not |
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320 |
* at index n + 1, but rather at index n - 1, |
|
321 |
* or that the <code>View</code> to the WEST is not at |
|
322 |
* index n - 1, but index n + 1. In this case this method |
|
323 |
* would return true, indicating the <code>View</code>s are |
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324 |
* layed out in descending order. |
|
325 |
* <p> |
|
326 |
* This will return true if the text is layed out right |
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327 |
* to left at position, otherwise false. |
|
328 |
* |
|
329 |
* @param position position into the model |
|
330 |
* @param bias either <code>Position.Bias.Forward</code> or |
|
331 |
* <code>Position.Bias.Backward</code> |
|
332 |
* @return true if the text is layed out right to left at |
|
333 |
* position, otherwise false. |
|
334 |
*/ |
|
335 |
protected boolean flipEastAndWestAtEnds(int position, |
|
336 |
Position.Bias bias) { |
|
337 |
Document doc = getDocument(); |
|
20103
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6968363: ClassCastException while entering HINDI characters with CustomDocument
malenkov
parents:
9212
diff
changeset
|
338 |
position = getStartOffset(); |
f640c22218a3
6968363: ClassCastException while entering HINDI characters with CustomDocument
malenkov
parents:
9212
diff
changeset
|
339 |
return !AbstractDocument.isLeftToRight(doc, position, position + 1); |
2 | 340 |
} |
341 |
||
342 |
// --- FlowView methods --------------------------------------------- |
|
343 |
||
344 |
/** |
|
345 |
* Fetches the constraining span to flow against for |
|
346 |
* the given child index. |
|
347 |
* @param index the index of the view being queried |
|
348 |
* @return the constraining span for the given view at |
|
349 |
* <code>index</code> |
|
350 |
* @since 1.3 |
|
351 |
*/ |
|
352 |
public int getFlowSpan(int index) { |
|
353 |
View child = getView(index); |
|
354 |
int adjust = 0; |
|
355 |
if (child instanceof Row) { |
|
356 |
Row row = (Row) child; |
|
357 |
adjust = row.getLeftInset() + row.getRightInset(); |
|
358 |
} |
|
359 |
return (layoutSpan == Integer.MAX_VALUE) ? layoutSpan |
|
360 |
: (layoutSpan - adjust); |
|
361 |
} |
|
362 |
||
363 |
/** |
|
364 |
* Fetches the location along the flow axis that the |
|
365 |
* flow span will start at. |
|
366 |
* @param index the index of the view being queried |
|
367 |
* @return the location for the given view at |
|
368 |
* <code>index</code> |
|
369 |
* @since 1.3 |
|
370 |
*/ |
|
371 |
public int getFlowStart(int index) { |
|
372 |
View child = getView(index); |
|
373 |
int adjust = 0; |
|
374 |
if (child instanceof Row) { |
|
375 |
Row row = (Row) child; |
|
376 |
adjust = row.getLeftInset(); |
|
377 |
} |
|
378 |
return tabBase + adjust; |
|
379 |
} |
|
380 |
||
381 |
/** |
|
382 |
* Create a <code>View</code> that should be used to hold a |
|
383 |
* a row's worth of children in a flow. |
|
384 |
* @return the new <code>View</code> |
|
385 |
* @since 1.3 |
|
386 |
*/ |
|
387 |
protected View createRow() { |
|
388 |
return new Row(getElement()); |
|
389 |
} |
|
390 |
||
391 |
// --- TabExpander methods ------------------------------------------ |
|
392 |
||
393 |
/** |
|
394 |
* Returns the next tab stop position given a reference position. |
|
395 |
* This view implements the tab coordinate system, and calls |
|
396 |
* <code>getTabbedSpan</code> on the logical children in the process |
|
397 |
* of layout to determine the desired span of the children. The |
|
398 |
* logical children can delegate their tab expansion upward to |
|
399 |
* the paragraph which knows how to expand tabs. |
|
400 |
* <code>LabelView</code> is an example of a view that delegates |
|
401 |
* its tab expansion needs upward to the paragraph. |
|
402 |
* <p> |
|
403 |
* This is implemented to try and locate a <code>TabSet</code> |
|
404 |
* in the paragraph element's attribute set. If one can be |
|
405 |
* found, its settings will be used, otherwise a default expansion |
|
406 |
* will be provided. The base location for for tab expansion |
|
407 |
* is the left inset from the paragraphs most recent allocation |
|
408 |
* (which is what the layout of the children is based upon). |
|
409 |
* |
|
410 |
* @param x the X reference position |
|
411 |
* @param tabOffset the position within the text stream |
|
20158
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
20103
diff
changeset
|
412 |
* that the tab occurred at >= 0 |
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
20103
diff
changeset
|
413 |
* @return the trailing end of the tab expansion >= 0 |
2 | 414 |
* @see TabSet |
415 |
* @see TabStop |
|
416 |
* @see LabelView |
|
417 |
*/ |
|
418 |
public float nextTabStop(float x, int tabOffset) { |
|
419 |
// If the text isn't left justified, offset by 10 pixels! |
|
420 |
if(justification != StyleConstants.ALIGN_LEFT) |
|
421 |
return x + 10.0f; |
|
422 |
x -= tabBase; |
|
423 |
TabSet tabs = getTabSet(); |
|
424 |
if(tabs == null) { |
|
425 |
// a tab every 72 pixels. |
|
426 |
return (float)(tabBase + (((int)x / 72 + 1) * 72)); |
|
427 |
} |
|
428 |
TabStop tab = tabs.getTabAfter(x + .01f); |
|
429 |
if(tab == null) { |
|
430 |
// no tab, do a default of 5 pixels. |
|
431 |
// Should this cause a wrapping of the line? |
|
432 |
return tabBase + x + 5.0f; |
|
433 |
} |
|
434 |
int alignment = tab.getAlignment(); |
|
435 |
int offset; |
|
436 |
switch(alignment) { |
|
437 |
default: |
|
438 |
case TabStop.ALIGN_LEFT: |
|
439 |
// Simple case, left tab. |
|
440 |
return tabBase + tab.getPosition(); |
|
441 |
case TabStop.ALIGN_BAR: |
|
442 |
// PENDING: what does this mean? |
|
443 |
return tabBase + tab.getPosition(); |
|
444 |
case TabStop.ALIGN_RIGHT: |
|
445 |
case TabStop.ALIGN_CENTER: |
|
446 |
offset = findOffsetToCharactersInString(tabChars, |
|
447 |
tabOffset + 1); |
|
448 |
break; |
|
449 |
case TabStop.ALIGN_DECIMAL: |
|
450 |
offset = findOffsetToCharactersInString(tabDecimalChars, |
|
451 |
tabOffset + 1); |
|
452 |
break; |
|
453 |
} |
|
454 |
if (offset == -1) { |
|
455 |
offset = getEndOffset(); |
|
456 |
} |
|
457 |
float charsSize = getPartialSize(tabOffset + 1, offset); |
|
458 |
switch(alignment) { |
|
459 |
case TabStop.ALIGN_RIGHT: |
|
460 |
case TabStop.ALIGN_DECIMAL: |
|
461 |
// right and decimal are treated the same way, the new |
|
462 |
// position will be the location of the tab less the |
|
463 |
// partialSize. |
|
464 |
return tabBase + Math.max(x, tab.getPosition() - charsSize); |
|
465 |
case TabStop.ALIGN_CENTER: |
|
466 |
// Similar to right, but half the partialSize. |
|
467 |
return tabBase + Math.max(x, tab.getPosition() - charsSize / 2.0f); |
|
468 |
} |
|
469 |
// will never get here! |
|
470 |
return x; |
|
471 |
} |
|
472 |
||
473 |
/** |
|
474 |
* Gets the <code>Tabset</code> to be used in calculating tabs. |
|
475 |
* |
|
476 |
* @return the <code>TabSet</code> |
|
477 |
*/ |
|
478 |
protected TabSet getTabSet() { |
|
479 |
return StyleConstants.getTabSet(getElement().getAttributes()); |
|
480 |
} |
|
481 |
||
482 |
/** |
|
483 |
* Returns the size used by the views between |
|
484 |
* <code>startOffset</code> and <code>endOffset</code>. |
|
485 |
* This uses <code>getPartialView</code> to calculate the |
|
486 |
* size if the child view implements the |
|
487 |
* <code>TabableView</code> interface. If a |
|
488 |
* size is needed and a <code>View</code> does not implement |
|
489 |
* the <code>TabableView</code> interface, |
|
490 |
* the <code>preferredSpan</code> will be used. |
|
491 |
* |
|
20158
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
20103
diff
changeset
|
492 |
* @param startOffset the starting document offset >= 0 |
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
20103
diff
changeset
|
493 |
* @param endOffset the ending document offset >= startOffset |
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
20103
diff
changeset
|
494 |
* @return the size >= 0 |
2 | 495 |
*/ |
496 |
protected float getPartialSize(int startOffset, int endOffset) { |
|
497 |
float size = 0.0f; |
|
498 |
int viewIndex; |
|
499 |
int numViews = getViewCount(); |
|
500 |
View view; |
|
501 |
int viewEnd; |
|
502 |
int tempEnd; |
|
503 |
||
504 |
// Have to search layoutPool! |
|
505 |
// PENDING: when ParagraphView supports breaking location |
|
506 |
// into layoutPool will have to change! |
|
507 |
viewIndex = getElement().getElementIndex(startOffset); |
|
508 |
numViews = layoutPool.getViewCount(); |
|
509 |
while(startOffset < endOffset && viewIndex < numViews) { |
|
510 |
view = layoutPool.getView(viewIndex++); |
|
511 |
viewEnd = view.getEndOffset(); |
|
512 |
tempEnd = Math.min(endOffset, viewEnd); |
|
513 |
if(view instanceof TabableView) |
|
514 |
size += ((TabableView)view).getPartialSpan(startOffset, tempEnd); |
|
515 |
else if(startOffset == view.getStartOffset() && |
|
516 |
tempEnd == view.getEndOffset()) |
|
517 |
size += view.getPreferredSpan(View.X_AXIS); |
|
518 |
else |
|
519 |
// PENDING: should we handle this better? |
|
520 |
return 0.0f; |
|
521 |
startOffset = viewEnd; |
|
522 |
} |
|
523 |
return size; |
|
524 |
} |
|
525 |
||
526 |
/** |
|
527 |
* Finds the next character in the document with a character in |
|
528 |
* <code>string</code>, starting at offset <code>start</code>. If |
|
529 |
* there are no characters found, -1 will be returned. |
|
530 |
* |
|
531 |
* @param string the string of characters |
|
20158
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
20103
diff
changeset
|
532 |
* @param start where to start in the model >= 0 |
2 | 533 |
* @return the document offset, or -1 if no characters found |
534 |
*/ |
|
535 |
protected int findOffsetToCharactersInString(char[] string, |
|
536 |
int start) { |
|
537 |
int stringLength = string.length; |
|
538 |
int end = getEndOffset(); |
|
539 |
Segment seg = new Segment(); |
|
540 |
try { |
|
541 |
getDocument().getText(start, end - start, seg); |
|
542 |
} catch (BadLocationException ble) { |
|
543 |
return -1; |
|
544 |
} |
|
545 |
for(int counter = seg.offset, maxCounter = seg.offset + seg.count; |
|
546 |
counter < maxCounter; counter++) { |
|
547 |
char currentChar = seg.array[counter]; |
|
548 |
for(int subCounter = 0; subCounter < stringLength; |
|
549 |
subCounter++) { |
|
550 |
if(currentChar == string[subCounter]) |
|
551 |
return counter - seg.offset + start; |
|
552 |
} |
|
553 |
} |
|
554 |
// No match. |
|
555 |
return -1; |
|
556 |
} |
|
557 |
||
558 |
/** |
|
559 |
* Returns where the tabs are calculated from. |
|
560 |
* @return where tabs are calculated from |
|
561 |
*/ |
|
562 |
protected float getTabBase() { |
|
563 |
return (float)tabBase; |
|
564 |
} |
|
565 |
||
566 |
// ---- View methods ---------------------------------------------------- |
|
567 |
||
568 |
/** |
|
569 |
* Renders using the given rendering surface and area on that |
|
570 |
* surface. This is implemented to delgate to the superclass |
|
571 |
* after stashing the base coordinate for tab calculations. |
|
572 |
* |
|
573 |
* @param g the rendering surface to use |
|
574 |
* @param a the allocated region to render into |
|
575 |
* @see View#paint |
|
576 |
*/ |
|
577 |
public void paint(Graphics g, Shape a) { |
|
578 |
Rectangle alloc = (a instanceof Rectangle) ? (Rectangle)a : a.getBounds(); |
|
579 |
tabBase = alloc.x + getLeftInset(); |
|
580 |
super.paint(g, a); |
|
581 |
||
582 |
// line with the negative firstLineIndent value needs |
|
583 |
// special handling |
|
584 |
if (firstLineIndent < 0) { |
|
585 |
Shape sh = getChildAllocation(0, a); |
|
586 |
if ((sh != null) && sh.intersects(alloc)) { |
|
587 |
int x = alloc.x + getLeftInset() + firstLineIndent; |
|
588 |
int y = alloc.y + getTopInset(); |
|
589 |
||
590 |
Rectangle clip = g.getClipBounds(); |
|
591 |
tempRect.x = x + getOffset(X_AXIS, 0); |
|
592 |
tempRect.y = y + getOffset(Y_AXIS, 0); |
|
593 |
tempRect.width = getSpan(X_AXIS, 0) - firstLineIndent; |
|
594 |
tempRect.height = getSpan(Y_AXIS, 0); |
|
595 |
if (tempRect.intersects(clip)) { |
|
596 |
tempRect.x = tempRect.x - firstLineIndent; |
|
597 |
paintChild(g, tempRect, 0); |
|
598 |
} |
|
599 |
} |
|
600 |
} |
|
601 |
} |
|
602 |
||
603 |
/** |
|
604 |
* Determines the desired alignment for this view along an |
|
605 |
* axis. This is implemented to give the alignment to the |
|
606 |
* center of the first row along the y axis, and the default |
|
607 |
* along the x axis. |
|
608 |
* |
|
609 |
* @param axis may be either <code>View.X_AXIS</code> or |
|
610 |
* <code>View.Y_AXIS</code> |
|
611 |
* @return the desired alignment. This should be a value |
|
612 |
* between 0.0 and 1.0 inclusive, where 0 indicates alignment at the |
|
613 |
* origin and 1.0 indicates alignment to the full span |
|
614 |
* away from the origin. An alignment of 0.5 would be the |
|
615 |
* center of the view. |
|
616 |
*/ |
|
617 |
public float getAlignment(int axis) { |
|
618 |
switch (axis) { |
|
619 |
case Y_AXIS: |
|
620 |
float a = 0.5f; |
|
621 |
if (getViewCount() != 0) { |
|
622 |
int paragraphSpan = (int) getPreferredSpan(View.Y_AXIS); |
|
623 |
View v = getView(0); |
|
624 |
int rowSpan = (int) v.getPreferredSpan(View.Y_AXIS); |
|
625 |
a = (paragraphSpan != 0) ? ((float)(rowSpan / 2)) / paragraphSpan : 0; |
|
626 |
} |
|
627 |
return a; |
|
628 |
case X_AXIS: |
|
629 |
return 0.5f; |
|
630 |
default: |
|
631 |
throw new IllegalArgumentException("Invalid axis: " + axis); |
|
632 |
} |
|
633 |
} |
|
634 |
||
635 |
/** |
|
636 |
* Breaks this view on the given axis at the given length. |
|
637 |
* <p> |
|
638 |
* <code>ParagraphView</code> instances are breakable |
|
639 |
* along the <code>Y_AXIS</code> only, and only if |
|
640 |
* <code>len</code> is after the first line. |
|
641 |
* |
|
642 |
* @param axis may be either <code>View.X_AXIS</code> |
|
643 |
* or <code>View.Y_AXIS</code> |
|
644 |
* @param len specifies where a potential break is desired |
|
20158
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
20103
diff
changeset
|
645 |
* along the given axis >= 0 |
2 | 646 |
* @param a the current allocation of the view |
647 |
* @return the fragment of the view that represents the |
|
648 |
* given span, if the view can be broken; if the view |
|
649 |
* doesn't support breaking behavior, the view itself is |
|
650 |
* returned |
|
651 |
* @see View#breakView |
|
652 |
*/ |
|
653 |
public View breakView(int axis, float len, Shape a) { |
|
654 |
if(axis == View.Y_AXIS) { |
|
655 |
if(a != null) { |
|
656 |
Rectangle alloc = a.getBounds(); |
|
657 |
setSize(alloc.width, alloc.height); |
|
658 |
} |
|
659 |
// Determine what row to break on. |
|
660 |
||
661 |
// PENDING(prinz) add break support |
|
662 |
return this; |
|
663 |
} |
|
664 |
return this; |
|
665 |
} |
|
666 |
||
667 |
/** |
|
668 |
* Gets the break weight for a given location. |
|
669 |
* <p> |
|
670 |
* <code>ParagraphView</code> instances are breakable |
|
671 |
* along the <code>Y_AXIS</code> only, and only if |
|
672 |
* <code>len</code> is after the first row. If the length |
|
673 |
* is less than one row, a value of <code>BadBreakWeight</code> |
|
674 |
* is returned. |
|
675 |
* |
|
676 |
* @param axis may be either <code>View.X_AXIS</code> |
|
677 |
* or <code>View.Y_AXIS</code> |
|
20158
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
20103
diff
changeset
|
678 |
* @param len specifies where a potential break is desired >= 0 |
2 | 679 |
* @return a value indicating the attractiveness of breaking here; |
680 |
* either <code>GoodBreakWeight</code> or <code>BadBreakWeight</code> |
|
681 |
* @see View#getBreakWeight |
|
682 |
*/ |
|
683 |
public int getBreakWeight(int axis, float len) { |
|
684 |
if(axis == View.Y_AXIS) { |
|
685 |
// PENDING(prinz) make this return a reasonable value |
|
686 |
// when paragraph breaking support is re-implemented. |
|
687 |
// If less than one row, bad weight value should be |
|
688 |
// returned. |
|
689 |
//return GoodBreakWeight; |
|
690 |
return BadBreakWeight; |
|
691 |
} |
|
692 |
return BadBreakWeight; |
|
693 |
} |
|
694 |
||
695 |
/** |
|
696 |
* Calculate the needs for the paragraph along the minor axis. |
|
697 |
* |
|
698 |
* <p>This uses size requirements of the superclass, modified to take into |
|
699 |
* account the non-breakable areas at the adjacent views edges. The minimal |
|
700 |
* size requirements for such views should be no less than the sum of all |
|
701 |
* adjacent fragments.</p> |
|
702 |
* |
|
703 |
* <p>If the {@code axis} parameter is neither {@code View.X_AXIS} nor |
|
704 |
* {@code View.Y_AXIS}, {@link IllegalArgumentException} is thrown. If the |
|
705 |
* {@code r} parameter is {@code null,} a new {@code SizeRequirements} |
|
706 |
* object is created, otherwise the supplied {@code SizeRequirements} |
|
707 |
* object is returned.</p> |
|
708 |
* |
|
709 |
* @param axis the minor axis |
|
710 |
* @param r the input {@code SizeRequirements} object |
|
711 |
* @return the new or adjusted {@code SizeRequirements} object |
|
3709
e7cf22d025bb
6876628: @throw instead of @throws in two ParagraphView classes
darcy
parents:
3342
diff
changeset
|
712 |
* @throws IllegalArgumentException if the {@code axis} parameter is invalid |
2 | 713 |
*/ |
714 |
@Override |
|
715 |
protected SizeRequirements calculateMinorAxisRequirements(int axis, |
|
716 |
SizeRequirements r) { |
|
9212
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
717 |
r = super.calculateMinorAxisRequirements(axis, r); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
718 |
|
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
719 |
float min = 0; |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
720 |
float glue = 0; |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
721 |
int n = getLayoutViewCount(); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
722 |
for (int i = 0; i < n; i++) { |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
723 |
View v = getLayoutView(i); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
724 |
float span = v.getMinimumSpan(axis); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
725 |
if (v.getBreakWeight(axis, 0, v.getMaximumSpan(axis)) > View.BadBreakWeight) { |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
726 |
// find the longest non-breakable fragments at the view edges |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
727 |
int p0 = v.getStartOffset(); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
728 |
int p1 = v.getEndOffset(); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
729 |
float start = findEdgeSpan(v, axis, p0, p0, p1); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
730 |
float end = findEdgeSpan(v, axis, p1, p0, p1); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
731 |
glue += start; |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
732 |
min = Math.max(min, Math.max(span, glue)); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
733 |
glue = end; |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
734 |
} else { |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
735 |
// non-breakable view |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
736 |
glue += span; |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
737 |
min = Math.max(min, glue); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
738 |
} |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
739 |
} |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
740 |
r.minimum = Math.max(r.minimum, (int) min); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
741 |
r.preferred = Math.max(r.minimum, r.preferred); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
742 |
r.maximum = Math.max(r.preferred, r.maximum); |
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
743 |
|
2123bfe0b40b
6973777: JCK manual case JEditorPaneTests.html#JEditorPane fails in jdk7 b100
rupashka
parents:
5506
diff
changeset
|
744 |
return r; |
2 | 745 |
} |
746 |
||
747 |
/** |
|
748 |
* Binary search for the longest non-breakable fragment at the view edge. |
|
749 |
*/ |
|
750 |
private float findEdgeSpan(View v, int axis, int fp, int p0, int p1) { |
|
751 |
int len = p1 - p0; |
|
752 |
if (len <= 1) { |
|
753 |
// further fragmentation is not possible |
|
754 |
return v.getMinimumSpan(axis); |
|
755 |
} else { |
|
756 |
int mid = p0 + len / 2; |
|
757 |
boolean startEdge = mid > fp; |
|
758 |
// initial view is breakable hence must support fragmentation |
|
759 |
View f = startEdge ? |
|
760 |
v.createFragment(fp, mid) : v.createFragment(mid, fp); |
|
761 |
boolean breakable = f.getBreakWeight( |
|
762 |
axis, 0, f.getMaximumSpan(axis)) > View.BadBreakWeight; |
|
763 |
if (breakable == startEdge) { |
|
764 |
p1 = mid; |
|
765 |
} else { |
|
766 |
p0 = mid; |
|
767 |
} |
|
768 |
return findEdgeSpan(f, axis, fp, p0, p1); |
|
769 |
} |
|
770 |
} |
|
771 |
||
772 |
/** |
|
773 |
* Gives notification from the document that attributes were changed |
|
774 |
* in a location that this view is responsible for. |
|
775 |
* |
|
776 |
* @param changes the change information from the |
|
777 |
* associated document |
|
778 |
* @param a the current allocation of the view |
|
779 |
* @param f the factory to use to rebuild if the view has children |
|
780 |
* @see View#changedUpdate |
|
781 |
*/ |
|
782 |
public void changedUpdate(DocumentEvent changes, Shape a, ViewFactory f) { |
|
783 |
// update any property settings stored, and layout should be |
|
784 |
// recomputed |
|
785 |
setPropertiesFromAttributes(); |
|
786 |
layoutChanged(X_AXIS); |
|
787 |
layoutChanged(Y_AXIS); |
|
788 |
super.changedUpdate(changes, a, f); |
|
789 |
} |
|
790 |
||
791 |
||
792 |
// --- variables ----------------------------------------------- |
|
793 |
||
794 |
private int justification; |
|
795 |
private float lineSpacing; |
|
796 |
/** Indentation for the first line, from the left inset. */ |
|
797 |
protected int firstLineIndent = 0; |
|
798 |
||
799 |
/** |
|
800 |
* Used by the TabExpander functionality to determine |
|
801 |
* where to base the tab calculations. This is basically |
|
802 |
* the location of the left side of the paragraph. |
|
803 |
*/ |
|
804 |
private int tabBase; |
|
805 |
||
806 |
/** |
|
807 |
* Used to create an i18n-based layout strategy |
|
808 |
*/ |
|
809 |
static Class i18nStrategy; |
|
810 |
||
811 |
/** Used for searching for a tab. */ |
|
812 |
static char[] tabChars; |
|
813 |
/** Used for searching for a tab or decimal character. */ |
|
814 |
static char[] tabDecimalChars; |
|
815 |
||
816 |
static { |
|
817 |
tabChars = new char[1]; |
|
818 |
tabChars[0] = '\t'; |
|
819 |
tabDecimalChars = new char[2]; |
|
820 |
tabDecimalChars[0] = '\t'; |
|
821 |
tabDecimalChars[1] = '.'; |
|
822 |
} |
|
823 |
||
824 |
/** |
|
825 |
* Internally created view that has the purpose of holding |
|
826 |
* the views that represent the children of the paragraph |
|
827 |
* that have been arranged in rows. |
|
828 |
*/ |
|
829 |
class Row extends BoxView { |
|
830 |
||
831 |
Row(Element elem) { |
|
832 |
super(elem, View.X_AXIS); |
|
833 |
} |
|
834 |
||
835 |
/** |
|
836 |
* This is reimplemented to do nothing since the |
|
837 |
* paragraph fills in the row with its needed |
|
838 |
* children. |
|
839 |
*/ |
|
840 |
protected void loadChildren(ViewFactory f) { |
|
841 |
} |
|
842 |
||
843 |
/** |
|
844 |
* Fetches the attributes to use when rendering. This view |
|
845 |
* isn't directly responsible for an element so it returns |
|
846 |
* the outer classes attributes. |
|
847 |
*/ |
|
848 |
public AttributeSet getAttributes() { |
|
849 |
View p = getParent(); |
|
850 |
return (p != null) ? p.getAttributes() : null; |
|
851 |
} |
|
852 |
||
853 |
public float getAlignment(int axis) { |
|
854 |
if (axis == View.X_AXIS) { |
|
855 |
switch (justification) { |
|
856 |
case StyleConstants.ALIGN_LEFT: |
|
857 |
return 0; |
|
858 |
case StyleConstants.ALIGN_RIGHT: |
|
859 |
return 1; |
|
860 |
case StyleConstants.ALIGN_CENTER: |
|
861 |
return 0.5f; |
|
862 |
case StyleConstants.ALIGN_JUSTIFIED: |
|
863 |
float rv = 0.5f; |
|
864 |
//if we can justifiy the content always align to |
|
865 |
//the left. |
|
866 |
if (isJustifiableDocument()) { |
|
867 |
rv = 0f; |
|
868 |
} |
|
869 |
return rv; |
|
870 |
} |
|
871 |
} |
|
872 |
return super.getAlignment(axis); |
|
873 |
} |
|
874 |
||
875 |
/** |
|
876 |
* Provides a mapping from the document model coordinate space |
|
877 |
* to the coordinate space of the view mapped to it. This is |
|
878 |
* implemented to let the superclass find the position along |
|
879 |
* the major axis and the allocation of the row is used |
|
880 |
* along the minor axis, so that even though the children |
|
881 |
* are different heights they all get the same caret height. |
|
882 |
* |
|
883 |
* @param pos the position to convert |
|
884 |
* @param a the allocated region to render into |
|
885 |
* @return the bounding box of the given position |
|
886 |
* @exception BadLocationException if the given position does not represent a |
|
887 |
* valid location in the associated document |
|
888 |
* @see View#modelToView |
|
889 |
*/ |
|
890 |
public Shape modelToView(int pos, Shape a, Position.Bias b) throws BadLocationException { |
|
891 |
Rectangle r = a.getBounds(); |
|
892 |
View v = getViewAtPosition(pos, r); |
|
893 |
if ((v != null) && (!v.getElement().isLeaf())) { |
|
894 |
// Don't adjust the height if the view represents a branch. |
|
895 |
return super.modelToView(pos, a, b); |
|
896 |
} |
|
897 |
r = a.getBounds(); |
|
898 |
int height = r.height; |
|
899 |
int y = r.y; |
|
900 |
Shape loc = super.modelToView(pos, a, b); |
|
901 |
r = loc.getBounds(); |
|
902 |
r.height = height; |
|
903 |
r.y = y; |
|
904 |
return r; |
|
905 |
} |
|
906 |
||
907 |
/** |
|
908 |
* Range represented by a row in the paragraph is only |
|
909 |
* a subset of the total range of the paragraph element. |
|
910 |
* @see View#getRange |
|
911 |
*/ |
|
912 |
public int getStartOffset() { |
|
913 |
int offs = Integer.MAX_VALUE; |
|
914 |
int n = getViewCount(); |
|
915 |
for (int i = 0; i < n; i++) { |
|
916 |
View v = getView(i); |
|
917 |
offs = Math.min(offs, v.getStartOffset()); |
|
918 |
} |
|
919 |
return offs; |
|
920 |
} |
|
921 |
||
922 |
public int getEndOffset() { |
|
923 |
int offs = 0; |
|
924 |
int n = getViewCount(); |
|
925 |
for (int i = 0; i < n; i++) { |
|
926 |
View v = getView(i); |
|
927 |
offs = Math.max(offs, v.getEndOffset()); |
|
928 |
} |
|
929 |
return offs; |
|
930 |
} |
|
931 |
||
932 |
/** |
|
933 |
* Perform layout for the minor axis of the box (i.e. the |
|
934 |
* axis orthoginal to the axis that it represents). The results |
|
935 |
* of the layout should be placed in the given arrays which represent |
|
936 |
* the allocations to the children along the minor axis. |
|
937 |
* <p> |
|
938 |
* This is implemented to do a baseline layout of the children |
|
939 |
* by calling BoxView.baselineLayout. |
|
940 |
* |
|
941 |
* @param targetSpan the total span given to the view, which |
|
942 |
* whould be used to layout the children. |
|
943 |
* @param axis the axis being layed out. |
|
944 |
* @param offsets the offsets from the origin of the view for |
|
945 |
* each of the child views. This is a return value and is |
|
946 |
* filled in by the implementation of this method. |
|
947 |
* @param spans the span of each child view. This is a return |
|
948 |
* value and is filled in by the implementation of this method. |
|
949 |
* @return the offset and span for each child view in the |
|
950 |
* offsets and spans parameters |
|
951 |
*/ |
|
952 |
protected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
|
953 |
baselineLayout(targetSpan, axis, offsets, spans); |
|
954 |
} |
|
955 |
||
956 |
protected SizeRequirements calculateMinorAxisRequirements(int axis, |
|
957 |
SizeRequirements r) { |
|
958 |
return baselineRequirements(axis, r); |
|
959 |
} |
|
960 |
||
961 |
||
962 |
private boolean isLastRow() { |
|
963 |
View parent; |
|
964 |
return ((parent = getParent()) == null |
|
965 |
|| this == parent.getView(parent.getViewCount() - 1)); |
|
966 |
} |
|
967 |
||
968 |
private boolean isBrokenRow() { |
|
969 |
boolean rv = false; |
|
970 |
int viewsCount = getViewCount(); |
|
971 |
if (viewsCount > 0) { |
|
972 |
View lastView = getView(viewsCount - 1); |
|
973 |
if (lastView.getBreakWeight(X_AXIS, 0, 0) >= |
|
974 |
ForcedBreakWeight) { |
|
975 |
rv = true; |
|
976 |
} |
|
977 |
} |
|
978 |
return rv; |
|
979 |
} |
|
980 |
||
981 |
private boolean isJustifiableDocument() { |
|
982 |
return (! Boolean.TRUE.equals(getDocument().getProperty( |
|
983 |
AbstractDocument.I18NProperty))); |
|
984 |
} |
|
985 |
||
986 |
/** |
|
987 |
* Whether we need to justify this {@code Row}. |
|
988 |
* At this time (jdk1.6) we support justification on for non |
|
989 |
* 18n text. |
|
990 |
* |
|
991 |
* @return {@code true} if this {@code Row} should be justified. |
|
992 |
*/ |
|
993 |
private boolean isJustifyEnabled() { |
|
994 |
boolean ret = (justification == StyleConstants.ALIGN_JUSTIFIED); |
|
995 |
||
996 |
//no justification for i18n documents |
|
997 |
ret = ret && isJustifiableDocument(); |
|
998 |
||
999 |
//no justification for the last row |
|
1000 |
ret = ret && ! isLastRow(); |
|
1001 |
||
1002 |
//no justification for the broken rows |
|
1003 |
ret = ret && ! isBrokenRow(); |
|
1004 |
||
1005 |
return ret; |
|
1006 |
} |
|
1007 |
||
1008 |
||
1009 |
//Calls super method after setting spaceAddon to 0. |
|
1010 |
//Justification should not affect MajorAxisRequirements |
|
1011 |
@Override |
|
1012 |
protected SizeRequirements calculateMajorAxisRequirements(int axis, |
|
1013 |
SizeRequirements r) { |
|
1014 |
int oldJustficationData[] = justificationData; |
|
1015 |
justificationData = null; |
|
1016 |
SizeRequirements ret = super.calculateMajorAxisRequirements(axis, r); |
|
1017 |
if (isJustifyEnabled()) { |
|
1018 |
justificationData = oldJustficationData; |
|
1019 |
} |
|
1020 |
return ret; |
|
1021 |
} |
|
1022 |
||
1023 |
@Override |
|
1024 |
protected void layoutMajorAxis(int targetSpan, int axis, |
|
1025 |
int[] offsets, int[] spans) { |
|
1026 |
int oldJustficationData[] = justificationData; |
|
1027 |
justificationData = null; |
|
1028 |
super.layoutMajorAxis(targetSpan, axis, offsets, spans); |
|
1029 |
if (! isJustifyEnabled()) { |
|
1030 |
return; |
|
1031 |
} |
|
1032 |
||
1033 |
int currentSpan = 0; |
|
1034 |
for (int span : spans) { |
|
1035 |
currentSpan += span; |
|
1036 |
} |
|
1037 |
if (currentSpan == targetSpan) { |
|
1038 |
//no need to justify |
|
1039 |
return; |
|
1040 |
} |
|
1041 |
||
1042 |
// we justify text by enlarging spaces by the {@code spaceAddon}. |
|
1043 |
// justification is started to the right of the rightmost TAB. |
|
1044 |
// leading and trailing spaces are not extendable. |
|
1045 |
// |
|
1046 |
// GlyphPainter1 uses |
|
1047 |
// justificationData |
|
1048 |
// for all painting and measurement. |
|
1049 |
||
1050 |
int extendableSpaces = 0; |
|
1051 |
int startJustifiableContent = -1; |
|
1052 |
int endJustifiableContent = -1; |
|
1053 |
int lastLeadingSpaces = 0; |
|
1054 |
||
1055 |
int rowStartOffset = getStartOffset(); |
|
1056 |
int rowEndOffset = getEndOffset(); |
|
1057 |
int spaceMap[] = new int[rowEndOffset - rowStartOffset]; |
|
1058 |
Arrays.fill(spaceMap, 0); |
|
1059 |
for (int i = getViewCount() - 1; i >= 0 ; i--) { |
|
1060 |
View view = getView(i); |
|
1061 |
if (view instanceof GlyphView) { |
|
1062 |
GlyphView.JustificationInfo justificationInfo = |
|
1063 |
((GlyphView) view).getJustificationInfo(rowStartOffset); |
|
1064 |
final int viewStartOffset = view.getStartOffset(); |
|
1065 |
final int offset = viewStartOffset - rowStartOffset; |
|
1066 |
for (int j = 0; j < justificationInfo.spaceMap.length(); j++) { |
|
1067 |
if (justificationInfo.spaceMap.get(j)) { |
|
1068 |
spaceMap[j + offset] = 1; |
|
1069 |
} |
|
1070 |
} |
|
1071 |
if (startJustifiableContent > 0) { |
|
1072 |
if (justificationInfo.end >= 0) { |
|
1073 |
extendableSpaces += justificationInfo.trailingSpaces; |
|
1074 |
} else { |
|
1075 |
lastLeadingSpaces += justificationInfo.trailingSpaces; |
|
1076 |
} |
|
1077 |
} |
|
1078 |
if (justificationInfo.start >= 0) { |
|
1079 |
startJustifiableContent = |
|
1080 |
justificationInfo.start + viewStartOffset; |
|
1081 |
extendableSpaces += lastLeadingSpaces; |
|
1082 |
} |
|
1083 |
if (justificationInfo.end >= 0 |
|
1084 |
&& endJustifiableContent < 0) { |
|
1085 |
endJustifiableContent = |
|
1086 |
justificationInfo.end + viewStartOffset; |
|
1087 |
} |
|
1088 |
extendableSpaces += justificationInfo.contentSpaces; |
|
1089 |
lastLeadingSpaces = justificationInfo.leadingSpaces; |
|
1090 |
if (justificationInfo.hasTab) { |
|
1091 |
break; |
|
1092 |
} |
|
1093 |
} |
|
1094 |
} |
|
1095 |
if (extendableSpaces <= 0) { |
|
1096 |
//there is nothing we can do to justify |
|
1097 |
return; |
|
1098 |
} |
|
1099 |
int adjustment = (targetSpan - currentSpan); |
|
1100 |
int spaceAddon = (extendableSpaces > 0) |
|
1101 |
? adjustment / extendableSpaces |
|
1102 |
: 0; |
|
1103 |
int spaceAddonLeftoverEnd = -1; |
|
1104 |
for (int i = startJustifiableContent - rowStartOffset, |
|
1105 |
leftover = adjustment - spaceAddon * extendableSpaces; |
|
1106 |
leftover > 0; |
|
1107 |
leftover -= spaceMap[i], |
|
1108 |
i++) { |
|
1109 |
spaceAddonLeftoverEnd = i; |
|
1110 |
} |
|
1111 |
if (spaceAddon > 0 || spaceAddonLeftoverEnd >= 0) { |
|
1112 |
justificationData = (oldJustficationData != null) |
|
1113 |
? oldJustficationData |
|
1114 |
: new int[END_JUSTIFIABLE + 1]; |
|
1115 |
justificationData[SPACE_ADDON] = spaceAddon; |
|
1116 |
justificationData[SPACE_ADDON_LEFTOVER_END] = |
|
1117 |
spaceAddonLeftoverEnd; |
|
1118 |
justificationData[START_JUSTIFIABLE] = |
|
1119 |
startJustifiableContent - rowStartOffset; |
|
1120 |
justificationData[END_JUSTIFIABLE] = |
|
1121 |
endJustifiableContent - rowStartOffset; |
|
1122 |
super.layoutMajorAxis(targetSpan, axis, offsets, spans); |
|
1123 |
} |
|
1124 |
} |
|
1125 |
||
1126 |
//for justified row we assume the maximum horizontal span |
|
1127 |
//is MAX_VALUE. |
|
1128 |
@Override |
|
1129 |
public float getMaximumSpan(int axis) { |
|
1130 |
float ret; |
|
1131 |
if (View.X_AXIS == axis |
|
1132 |
&& isJustifyEnabled()) { |
|
1133 |
ret = Float.MAX_VALUE; |
|
1134 |
} else { |
|
1135 |
ret = super.getMaximumSpan(axis); |
|
1136 |
} |
|
1137 |
return ret; |
|
1138 |
} |
|
1139 |
||
1140 |
/** |
|
1141 |
* Fetches the child view index representing the given position in |
|
1142 |
* the model. |
|
1143 |
* |
|
20158
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
20103
diff
changeset
|
1144 |
* @param pos the position >= 0 |
2 | 1145 |
* @return index of the view representing the given position, or |
1146 |
* -1 if no view represents that position |
|
1147 |
*/ |
|
1148 |
protected int getViewIndexAtPosition(int pos) { |
|
1149 |
// This is expensive, but are views are not necessarily layed |
|
1150 |
// out in model order. |
|
1151 |
if(pos < getStartOffset() || pos >= getEndOffset()) |
|
1152 |
return -1; |
|
1153 |
for(int counter = getViewCount() - 1; counter >= 0; counter--) { |
|
1154 |
View v = getView(counter); |
|
1155 |
if(pos >= v.getStartOffset() && |
|
1156 |
pos < v.getEndOffset()) { |
|
1157 |
return counter; |
|
1158 |
} |
|
1159 |
} |
|
1160 |
return -1; |
|
1161 |
} |
|
1162 |
||
1163 |
/** |
|
1164 |
* Gets the left inset. |
|
1165 |
* |
|
1166 |
* @return the inset |
|
1167 |
*/ |
|
1168 |
protected short getLeftInset() { |
|
1169 |
View parentView; |
|
1170 |
int adjustment = 0; |
|
1171 |
if ((parentView = getParent()) != null) { //use firstLineIdent for the first row |
|
1172 |
if (this == parentView.getView(0)) { |
|
1173 |
adjustment = firstLineIndent; |
|
1174 |
} |
|
1175 |
} |
|
1176 |
return (short)(super.getLeftInset() + adjustment); |
|
1177 |
} |
|
1178 |
||
1179 |
protected short getBottomInset() { |
|
1180 |
return (short)(super.getBottomInset() + |
|
1181 |
((minorRequest != null) ? minorRequest.preferred : 0) * |
|
1182 |
lineSpacing); |
|
1183 |
} |
|
1184 |
||
1185 |
final static int SPACE_ADDON = 0; |
|
1186 |
final static int SPACE_ADDON_LEFTOVER_END = 1; |
|
1187 |
final static int START_JUSTIFIABLE = 2; |
|
1188 |
//this should be the last index in justificationData |
|
1189 |
final static int END_JUSTIFIABLE = 3; |
|
1190 |
||
1191 |
int justificationData[] = null; |
|
1192 |
} |
|
1193 |
||
1194 |
} |