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/*
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* Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
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* 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.lang.reflect.Method;
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import java.awt.Component;
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import java.awt.Rectangle;
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import java.awt.Graphics;
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import java.awt.FontMetrics;
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import java.awt.Shape;
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import java.awt.Toolkit;
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import java.awt.Graphics2D;
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import java.awt.font.FontRenderContext;
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import java.awt.font.TextLayout;
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import java.awt.font.TextAttribute;
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import java.text.*;
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import javax.swing.JComponent;
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import javax.swing.SwingConstants;
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import javax.swing.text.ParagraphView.Row;
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import sun.swing.SwingUtilities2;
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/**
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* A collection of methods to deal with various text
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* related activities.
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*
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* @author Timothy Prinzing
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*/
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public class Utilities {
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/**
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* If <code>view</code>'s container is a <code>JComponent</code> it
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* is returned, after casting.
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*/
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static JComponent getJComponent(View view) {
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if (view != null) {
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Component component = view.getContainer();
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if (component instanceof JComponent) {
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return (JComponent)component;
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}
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}
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return null;
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}
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/**
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* Draws the given text, expanding any tabs that are contained
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* using the given tab expansion technique. This particular
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* implementation renders in a 1.1 style coordinate system
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* where ints are used and 72dpi is assumed.
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*
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* @param s the source of the text
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* @param x the X origin >= 0
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* @param y the Y origin >= 0
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* @param g the graphics context
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* @param e how to expand the tabs. If this value is null,
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* tabs will be expanded as a space character.
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* @param startOffset starting offset of the text in the document >= 0
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* @return the X location at the end of the rendered text
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*/
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public static final int drawTabbedText(Segment s, int x, int y, Graphics g,
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TabExpander e, int startOffset) {
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return drawTabbedText(null, s, x, y, g, e, startOffset);
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}
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/**
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* Draws the given text, expanding any tabs that are contained
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* using the given tab expansion technique. This particular
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* implementation renders in a 1.1 style coordinate system
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* where ints are used and 72dpi is assumed.
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*
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* @param view View requesting rendering, may be null.
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* @param s the source of the text
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* @param x the X origin >= 0
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* @param y the Y origin >= 0
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* @param g the graphics context
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* @param e how to expand the tabs. If this value is null,
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* tabs will be expanded as a space character.
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* @param startOffset starting offset of the text in the document >= 0
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* @return the X location at the end of the rendered text
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*/
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static final int drawTabbedText(View view,
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Segment s, int x, int y, Graphics g,
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TabExpander e, int startOffset) {
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return drawTabbedText(view, s, x, y, g, e, startOffset, null);
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}
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// In addition to the previous method it can extend spaces for
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// justification.
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//
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// all params are the same as in the preious method except the last
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// one:
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// @param justificationData justificationData for the row.
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// if null not justification is needed
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static final int drawTabbedText(View view,
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Segment s, int x, int y, Graphics g,
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TabExpander e, int startOffset,
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int [] justificationData) {
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JComponent component = getJComponent(view);
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FontMetrics metrics = SwingUtilities2.getFontMetrics(component, g);
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int nextX = x;
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char[] txt = s.array;
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int txtOffset = s.offset;
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int flushLen = 0;
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int flushIndex = s.offset;
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int spaceAddon = 0;
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int spaceAddonLeftoverEnd = -1;
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int startJustifiableContent = 0;
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int endJustifiableContent = 0;
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if (justificationData != null) {
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int offset = - startOffset + txtOffset;
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View parent = null;
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if (view != null
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&& (parent = view.getParent()) != null) {
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offset += parent.getStartOffset();
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}
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spaceAddon =
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justificationData[Row.SPACE_ADDON];
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spaceAddonLeftoverEnd =
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justificationData[Row.SPACE_ADDON_LEFTOVER_END] + offset;
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startJustifiableContent =
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justificationData[Row.START_JUSTIFIABLE] + offset;
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endJustifiableContent =
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justificationData[Row.END_JUSTIFIABLE] + offset;
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}
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int n = s.offset + s.count;
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for (int i = txtOffset; i < n; i++) {
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if (txt[i] == '\t'
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|| ((spaceAddon != 0 || i <= spaceAddonLeftoverEnd)
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&& (txt[i] == ' ')
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&& startJustifiableContent <= i
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&& i <= endJustifiableContent
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)) {
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if (flushLen > 0) {
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nextX = SwingUtilities2.drawChars(component, g, txt,
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flushIndex, flushLen, x, y);
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flushLen = 0;
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}
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flushIndex = i + 1;
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if (txt[i] == '\t') {
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if (e != null) {
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nextX = (int) e.nextTabStop((float) nextX, startOffset + i - txtOffset);
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} else {
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nextX += metrics.charWidth(' ');
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}
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} else if (txt[i] == ' ') {
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nextX += metrics.charWidth(' ') + spaceAddon;
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if (i <= spaceAddonLeftoverEnd) {
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nextX++;
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}
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}
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x = nextX;
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} else if ((txt[i] == '\n') || (txt[i] == '\r')) {
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if (flushLen > 0) {
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nextX = SwingUtilities2.drawChars(component, g, txt,
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flushIndex, flushLen, x, y);
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flushLen = 0;
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}
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flushIndex = i + 1;
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x = nextX;
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} else {
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flushLen += 1;
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}
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}
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if (flushLen > 0) {
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nextX = SwingUtilities2.drawChars(component, g,txt, flushIndex,
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flushLen, x, y);
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}
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return nextX;
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}
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/**
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* Determines the width of the given segment of text taking tabs
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* into consideration. This is implemented in a 1.1 style coordinate
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* system where ints are used and 72dpi is assumed.
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*
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* @param s the source of the text
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* @param metrics the font metrics to use for the calculation
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* @param x the X origin >= 0
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* @param e how to expand the tabs. If this value is null,
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* tabs will be expanded as a space character.
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* @param startOffset starting offset of the text in the document >= 0
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* @return the width of the text
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*/
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public static final int getTabbedTextWidth(Segment s, FontMetrics metrics, int x,
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TabExpander e, int startOffset) {
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return getTabbedTextWidth(null, s, metrics, x, e, startOffset, null);
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}
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// In addition to the previous method it can extend spaces for
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// justification.
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//
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// all params are the same as in the preious method except the last
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// one:
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// @param justificationData justificationData for the row.
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// if null not justification is needed
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static final int getTabbedTextWidth(View view, Segment s, FontMetrics metrics, int x,
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TabExpander e, int startOffset,
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int[] justificationData) {
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int nextX = x;
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char[] txt = s.array;
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int txtOffset = s.offset;
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int n = s.offset + s.count;
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int charCount = 0;
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int spaceAddon = 0;
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int spaceAddonLeftoverEnd = -1;
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int startJustifiableContent = 0;
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int endJustifiableContent = 0;
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if (justificationData != null) {
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int offset = - startOffset + txtOffset;
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View parent = null;
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if (view != null
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&& (parent = view.getParent()) != null) {
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offset += parent.getStartOffset();
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}
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spaceAddon =
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justificationData[Row.SPACE_ADDON];
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spaceAddonLeftoverEnd =
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justificationData[Row.SPACE_ADDON_LEFTOVER_END] + offset;
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startJustifiableContent =
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justificationData[Row.START_JUSTIFIABLE] + offset;
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endJustifiableContent =
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justificationData[Row.END_JUSTIFIABLE] + offset;
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}
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for (int i = txtOffset; i < n; i++) {
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if (txt[i] == '\t'
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|| ((spaceAddon != 0 || i <= spaceAddonLeftoverEnd)
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&& (txt[i] == ' ')
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&& startJustifiableContent <= i
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&& i <= endJustifiableContent
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)) {
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nextX += metrics.charsWidth(txt, i-charCount, charCount);
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charCount = 0;
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if (txt[i] == '\t') {
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if (e != null) {
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nextX = (int) e.nextTabStop((float) nextX,
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startOffset + i - txtOffset);
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} else {
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nextX += metrics.charWidth(' ');
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}
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} else if (txt[i] == ' ') {
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nextX += metrics.charWidth(' ') + spaceAddon;
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if (i <= spaceAddonLeftoverEnd) {
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nextX++;
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}
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}
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} else if(txt[i] == '\n') {
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// Ignore newlines, they take up space and we shouldn't be
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// counting them.
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nextX += metrics.charsWidth(txt, i - charCount, charCount);
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charCount = 0;
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} else {
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charCount++;
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}
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}
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nextX += metrics.charsWidth(txt, n - charCount, charCount);
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return nextX - x;
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}
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/**
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* Determines the relative offset into the given text that
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* best represents the given span in the view coordinate
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* system. This is implemented in a 1.1 style coordinate
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* system where ints are used and 72dpi is assumed.
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*
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* @param s the source of the text
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* @param metrics the font metrics to use for the calculation
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* @param x0 the starting view location representing the start
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* of the given text >= 0.
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* @param x the target view location to translate to an
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* offset into the text >= 0.
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* @param e how to expand the tabs. If this value is null,
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* tabs will be expanded as a space character.
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* @param startOffset starting offset of the text in the document >= 0
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* @return the offset into the text >= 0
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*/
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public static final int getTabbedTextOffset(Segment s, FontMetrics metrics,
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int x0, int x, TabExpander e,
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int startOffset) {
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return getTabbedTextOffset(s, metrics, x0, x, e, startOffset, true);
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}
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static final int getTabbedTextOffset(View view, Segment s, FontMetrics metrics,
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int x0, int x, TabExpander e,
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int startOffset,
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int[] justificationData) {
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return getTabbedTextOffset(view, s, metrics, x0, x, e, startOffset, true,
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justificationData);
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}
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public static final int getTabbedTextOffset(Segment s,
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FontMetrics metrics,
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int x0, int x, TabExpander e,
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int startOffset,
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boolean round) {
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return getTabbedTextOffset(null, s, metrics, x0, x, e, startOffset, round, null);
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}
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// In addition to the previous method it can extend spaces for
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// justification.
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//
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// all params are the same as in the preious method except the last
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// one:
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// @param justificationData justificationData for the row.
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// if null not justification is needed
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static final int getTabbedTextOffset(View view,
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Segment s,
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FontMetrics metrics,
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int x0, int x, TabExpander e,
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333 |
int startOffset,
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334 |
boolean round,
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335 |
int[] justificationData) {
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if (x0 >= x) {
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// x before x0, return.
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return 0;
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}
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int currX = x0;
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int nextX = currX;
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// s may be a shared segment, so it is copied prior to calling
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// the tab expander
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char[] txt = s.array;
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int txtOffset = s.offset;
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int txtCount = s.count;
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347 |
int spaceAddon = 0 ;
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348 |
int spaceAddonLeftoverEnd = -1;
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349 |
int startJustifiableContent = 0 ;
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350 |
int endJustifiableContent = 0;
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|
351 |
if (justificationData != null) {
|
|
|
352 |
int offset = - startOffset + txtOffset;
|
|
|
353 |
View parent = null;
|
|
|
354 |
if (view != null
|
|
|
355 |
&& (parent = view.getParent()) != null) {
|
|
|
356 |
offset += parent.getStartOffset();
|
|
|
357 |
}
|
|
|
358 |
spaceAddon =
|
|
|
359 |
justificationData[Row.SPACE_ADDON];
|
|
|
360 |
spaceAddonLeftoverEnd =
|
|
|
361 |
justificationData[Row.SPACE_ADDON_LEFTOVER_END] + offset;
|
|
|
362 |
startJustifiableContent =
|
|
|
363 |
justificationData[Row.START_JUSTIFIABLE] + offset;
|
|
|
364 |
endJustifiableContent =
|
|
|
365 |
justificationData[Row.END_JUSTIFIABLE] + offset;
|
|
|
366 |
}
|
|
|
367 |
int n = s.offset + s.count;
|
|
|
368 |
for (int i = s.offset; i < n; i++) {
|
|
|
369 |
if (txt[i] == '\t'
|
|
|
370 |
|| ((spaceAddon != 0 || i <= spaceAddonLeftoverEnd)
|
|
|
371 |
&& (txt[i] == ' ')
|
|
|
372 |
&& startJustifiableContent <= i
|
|
|
373 |
&& i <= endJustifiableContent
|
|
|
374 |
)){
|
|
|
375 |
if (txt[i] == '\t') {
|
|
|
376 |
if (e != null) {
|
|
|
377 |
nextX = (int) e.nextTabStop((float) nextX,
|
|
|
378 |
startOffset + i - txtOffset);
|
|
|
379 |
} else {
|
|
|
380 |
nextX += metrics.charWidth(' ');
|
|
|
381 |
}
|
|
|
382 |
} else if (txt[i] == ' ') {
|
|
|
383 |
nextX += metrics.charWidth(' ') + spaceAddon;
|
|
|
384 |
if (i <= spaceAddonLeftoverEnd) {
|
|
|
385 |
nextX++;
|
|
|
386 |
}
|
|
|
387 |
}
|
|
|
388 |
} else {
|
|
|
389 |
nextX += metrics.charWidth(txt[i]);
|
|
|
390 |
}
|
|
|
391 |
if ((x >= currX) && (x < nextX)) {
|
|
|
392 |
// found the hit position... return the appropriate side
|
|
|
393 |
if ((round == false) || ((x - currX) < (nextX - x))) {
|
|
|
394 |
return i - txtOffset;
|
|
|
395 |
} else {
|
|
|
396 |
return i + 1 - txtOffset;
|
|
|
397 |
}
|
|
|
398 |
}
|
|
|
399 |
currX = nextX;
|
|
|
400 |
}
|
|
|
401 |
|
|
|
402 |
// didn't find, return end offset
|
|
|
403 |
return txtCount;
|
|
|
404 |
}
|
|
|
405 |
|
|
|
406 |
/**
|
|
|
407 |
* Determine where to break the given text to fit
|
|
|
408 |
* within the given span. This tries to find a word boundary.
|
|
|
409 |
* @param s the source of the text
|
|
|
410 |
* @param metrics the font metrics to use for the calculation
|
|
|
411 |
* @param x0 the starting view location representing the start
|
|
|
412 |
* of the given text.
|
|
|
413 |
* @param x the target view location to translate to an
|
|
|
414 |
* offset into the text.
|
|
|
415 |
* @param e how to expand the tabs. If this value is null,
|
|
|
416 |
* tabs will be expanded as a space character.
|
|
|
417 |
* @param startOffset starting offset in the document of the text
|
|
|
418 |
* @return the offset into the given text
|
|
|
419 |
*/
|
|
|
420 |
public static final int getBreakLocation(Segment s, FontMetrics metrics,
|
|
|
421 |
int x0, int x, TabExpander e,
|
|
|
422 |
int startOffset) {
|
|
|
423 |
char[] txt = s.array;
|
|
|
424 |
int txtOffset = s.offset;
|
|
|
425 |
int txtCount = s.count;
|
|
|
426 |
int index = Utilities.getTabbedTextOffset(s, metrics, x0, x,
|
|
|
427 |
e, startOffset, false);
|
|
|
428 |
|
|
|
429 |
|
|
|
430 |
if (index >= txtCount - 1) {
|
|
|
431 |
return txtCount;
|
|
|
432 |
}
|
|
|
433 |
|
|
|
434 |
for (int i = txtOffset + index; i >= txtOffset; i--) {
|
|
|
435 |
char ch = txt[i];
|
|
|
436 |
if (ch < 256) {
|
|
|
437 |
// break on whitespace
|
|
|
438 |
if (Character.isWhitespace(ch)) {
|
|
|
439 |
index = i - txtOffset + 1;
|
|
|
440 |
break;
|
|
|
441 |
}
|
|
|
442 |
} else {
|
|
|
443 |
// a multibyte char found; use BreakIterator to find line break
|
|
|
444 |
BreakIterator bit = BreakIterator.getLineInstance();
|
|
|
445 |
bit.setText(s);
|
|
|
446 |
int breakPos = bit.preceding(i + 1);
|
|
|
447 |
if (breakPos > txtOffset) {
|
|
|
448 |
index = breakPos - txtOffset;
|
|
|
449 |
}
|
|
|
450 |
break;
|
|
|
451 |
}
|
|
|
452 |
}
|
|
|
453 |
return index;
|
|
|
454 |
}
|
|
|
455 |
|
|
|
456 |
/**
|
|
|
457 |
* Determines the starting row model position of the row that contains
|
|
|
458 |
* the specified model position. The component given must have a
|
|
|
459 |
* size to compute the result. If the component doesn't have a size
|
|
|
460 |
* a value of -1 will be returned.
|
|
|
461 |
*
|
|
|
462 |
* @param c the editor
|
|
|
463 |
* @param offs the offset in the document >= 0
|
|
|
464 |
* @return the position >= 0 if the request can be computed, otherwise
|
|
|
465 |
* a value of -1 will be returned.
|
|
|
466 |
* @exception BadLocationException if the offset is out of range
|
|
|
467 |
*/
|
|
|
468 |
public static final int getRowStart(JTextComponent c, int offs) throws BadLocationException {
|
|
|
469 |
Rectangle r = c.modelToView(offs);
|
|
|
470 |
if (r == null) {
|
|
|
471 |
return -1;
|
|
|
472 |
}
|
|
|
473 |
int lastOffs = offs;
|
|
|
474 |
int y = r.y;
|
|
|
475 |
while ((r != null) && (y == r.y)) {
|
|
|
476 |
// Skip invisible elements
|
|
|
477 |
if(r.height !=0) {
|
|
|
478 |
offs = lastOffs;
|
|
|
479 |
}
|
|
|
480 |
lastOffs -= 1;
|
|
|
481 |
r = (lastOffs >= 0) ? c.modelToView(lastOffs) : null;
|
|
|
482 |
}
|
|
|
483 |
return offs;
|
|
|
484 |
}
|
|
|
485 |
|
|
|
486 |
/**
|
|
|
487 |
* Determines the ending row model position of the row that contains
|
|
|
488 |
* the specified model position. The component given must have a
|
|
|
489 |
* size to compute the result. If the component doesn't have a size
|
|
|
490 |
* a value of -1 will be returned.
|
|
|
491 |
*
|
|
|
492 |
* @param c the editor
|
|
|
493 |
* @param offs the offset in the document >= 0
|
|
|
494 |
* @return the position >= 0 if the request can be computed, otherwise
|
|
|
495 |
* a value of -1 will be returned.
|
|
|
496 |
* @exception BadLocationException if the offset is out of range
|
|
|
497 |
*/
|
|
|
498 |
public static final int getRowEnd(JTextComponent c, int offs) throws BadLocationException {
|
|
|
499 |
Rectangle r = c.modelToView(offs);
|
|
|
500 |
if (r == null) {
|
|
|
501 |
return -1;
|
|
|
502 |
}
|
|
|
503 |
int n = c.getDocument().getLength();
|
|
|
504 |
int lastOffs = offs;
|
|
|
505 |
int y = r.y;
|
|
|
506 |
while ((r != null) && (y == r.y)) {
|
|
|
507 |
// Skip invisible elements
|
|
|
508 |
if (r.height !=0) {
|
|
|
509 |
offs = lastOffs;
|
|
|
510 |
}
|
|
|
511 |
lastOffs += 1;
|
|
|
512 |
r = (lastOffs <= n) ? c.modelToView(lastOffs) : null;
|
|
|
513 |
}
|
|
|
514 |
return offs;
|
|
|
515 |
}
|
|
|
516 |
|
|
|
517 |
/**
|
|
|
518 |
* Determines the position in the model that is closest to the given
|
|
|
519 |
* view location in the row above. The component given must have a
|
|
|
520 |
* size to compute the result. If the component doesn't have a size
|
|
|
521 |
* a value of -1 will be returned.
|
|
|
522 |
*
|
|
|
523 |
* @param c the editor
|
|
|
524 |
* @param offs the offset in the document >= 0
|
|
|
525 |
* @param x the X coordinate >= 0
|
|
|
526 |
* @return the position >= 0 if the request can be computed, otherwise
|
|
|
527 |
* a value of -1 will be returned.
|
|
|
528 |
* @exception BadLocationException if the offset is out of range
|
|
|
529 |
*/
|
|
|
530 |
public static final int getPositionAbove(JTextComponent c, int offs, int x) throws BadLocationException {
|
|
|
531 |
int lastOffs = getRowStart(c, offs) - 1;
|
|
|
532 |
if (lastOffs < 0) {
|
|
|
533 |
return -1;
|
|
|
534 |
}
|
|
|
535 |
int bestSpan = Integer.MAX_VALUE;
|
|
|
536 |
int y = 0;
|
|
|
537 |
Rectangle r = null;
|
|
|
538 |
if (lastOffs >= 0) {
|
|
|
539 |
r = c.modelToView(lastOffs);
|
|
|
540 |
y = r.y;
|
|
|
541 |
}
|
|
|
542 |
while ((r != null) && (y == r.y)) {
|
|
|
543 |
int span = Math.abs(r.x - x);
|
|
|
544 |
if (span < bestSpan) {
|
|
|
545 |
offs = lastOffs;
|
|
|
546 |
bestSpan = span;
|
|
|
547 |
}
|
|
|
548 |
lastOffs -= 1;
|
|
|
549 |
r = (lastOffs >= 0) ? c.modelToView(lastOffs) : null;
|
|
|
550 |
}
|
|
|
551 |
return offs;
|
|
|
552 |
}
|
|
|
553 |
|
|
|
554 |
/**
|
|
|
555 |
* Determines the position in the model that is closest to the given
|
|
|
556 |
* view location in the row below. The component given must have a
|
|
|
557 |
* size to compute the result. If the component doesn't have a size
|
|
|
558 |
* a value of -1 will be returned.
|
|
|
559 |
*
|
|
|
560 |
* @param c the editor
|
|
|
561 |
* @param offs the offset in the document >= 0
|
|
|
562 |
* @param x the X coordinate >= 0
|
|
|
563 |
* @return the position >= 0 if the request can be computed, otherwise
|
|
|
564 |
* a value of -1 will be returned.
|
|
|
565 |
* @exception BadLocationException if the offset is out of range
|
|
|
566 |
*/
|
|
|
567 |
public static final int getPositionBelow(JTextComponent c, int offs, int x) throws BadLocationException {
|
|
|
568 |
int lastOffs = getRowEnd(c, offs) + 1;
|
|
|
569 |
if (lastOffs <= 0) {
|
|
|
570 |
return -1;
|
|
|
571 |
}
|
|
|
572 |
int bestSpan = Integer.MAX_VALUE;
|
|
|
573 |
int n = c.getDocument().getLength();
|
|
|
574 |
int y = 0;
|
|
|
575 |
Rectangle r = null;
|
|
|
576 |
if (lastOffs <= n) {
|
|
|
577 |
r = c.modelToView(lastOffs);
|
|
|
578 |
y = r.y;
|
|
|
579 |
}
|
|
|
580 |
while ((r != null) && (y == r.y)) {
|
|
|
581 |
int span = Math.abs(x - r.x);
|
|
|
582 |
if (span < bestSpan) {
|
|
|
583 |
offs = lastOffs;
|
|
|
584 |
bestSpan = span;
|
|
|
585 |
}
|
|
|
586 |
lastOffs += 1;
|
|
|
587 |
r = (lastOffs <= n) ? c.modelToView(lastOffs) : null;
|
|
|
588 |
}
|
|
|
589 |
return offs;
|
|
|
590 |
}
|
|
|
591 |
|
|
|
592 |
/**
|
|
|
593 |
* Determines the start of a word for the given model location.
|
|
|
594 |
* Uses BreakIterator.getWordInstance() to actually get the words.
|
|
|
595 |
*
|
|
|
596 |
* @param c the editor
|
|
|
597 |
* @param offs the offset in the document >= 0
|
|
|
598 |
* @return the location in the model of the word start >= 0
|
|
|
599 |
* @exception BadLocationException if the offset is out of range
|
|
|
600 |
*/
|
|
|
601 |
public static final int getWordStart(JTextComponent c, int offs) throws BadLocationException {
|
|
|
602 |
Document doc = c.getDocument();
|
|
|
603 |
Element line = getParagraphElement(c, offs);
|
|
|
604 |
if (line == null) {
|
|
|
605 |
throw new BadLocationException("No word at " + offs, offs);
|
|
|
606 |
}
|
|
|
607 |
int lineStart = line.getStartOffset();
|
|
|
608 |
int lineEnd = Math.min(line.getEndOffset(), doc.getLength());
|
|
|
609 |
|
|
|
610 |
Segment seg = SegmentCache.getSharedSegment();
|
|
|
611 |
doc.getText(lineStart, lineEnd - lineStart, seg);
|
|
|
612 |
if(seg.count > 0) {
|
|
|
613 |
BreakIterator words = BreakIterator.getWordInstance(c.getLocale());
|
|
|
614 |
words.setText(seg);
|
|
|
615 |
int wordPosition = seg.offset + offs - lineStart;
|
|
|
616 |
if(wordPosition >= words.last()) {
|
|
|
617 |
wordPosition = words.last() - 1;
|
|
|
618 |
}
|
|
|
619 |
words.following(wordPosition);
|
|
|
620 |
offs = lineStart + words.previous() - seg.offset;
|
|
|
621 |
}
|
|
|
622 |
SegmentCache.releaseSharedSegment(seg);
|
|
|
623 |
return offs;
|
|
|
624 |
}
|
|
|
625 |
|
|
|
626 |
/**
|
|
|
627 |
* Determines the end of a word for the given location.
|
|
|
628 |
* Uses BreakIterator.getWordInstance() to actually get the words.
|
|
|
629 |
*
|
|
|
630 |
* @param c the editor
|
|
|
631 |
* @param offs the offset in the document >= 0
|
|
|
632 |
* @return the location in the model of the word end >= 0
|
|
|
633 |
* @exception BadLocationException if the offset is out of range
|
|
|
634 |
*/
|
|
|
635 |
public static final int getWordEnd(JTextComponent c, int offs) throws BadLocationException {
|
|
|
636 |
Document doc = c.getDocument();
|
|
|
637 |
Element line = getParagraphElement(c, offs);
|
|
|
638 |
if (line == null) {
|
|
|
639 |
throw new BadLocationException("No word at " + offs, offs);
|
|
|
640 |
}
|
|
|
641 |
int lineStart = line.getStartOffset();
|
|
|
642 |
int lineEnd = Math.min(line.getEndOffset(), doc.getLength());
|
|
|
643 |
|
|
|
644 |
Segment seg = SegmentCache.getSharedSegment();
|
|
|
645 |
doc.getText(lineStart, lineEnd - lineStart, seg);
|
|
|
646 |
if(seg.count > 0) {
|
|
|
647 |
BreakIterator words = BreakIterator.getWordInstance(c.getLocale());
|
|
|
648 |
words.setText(seg);
|
|
|
649 |
int wordPosition = offs - lineStart + seg.offset;
|
|
|
650 |
if(wordPosition >= words.last()) {
|
|
|
651 |
wordPosition = words.last() - 1;
|
|
|
652 |
}
|
|
|
653 |
offs = lineStart + words.following(wordPosition) - seg.offset;
|
|
|
654 |
}
|
|
|
655 |
SegmentCache.releaseSharedSegment(seg);
|
|
|
656 |
return offs;
|
|
|
657 |
}
|
|
|
658 |
|
|
|
659 |
/**
|
|
|
660 |
* Determines the start of the next word for the given location.
|
|
|
661 |
* Uses BreakIterator.getWordInstance() to actually get the words.
|
|
|
662 |
*
|
|
|
663 |
* @param c the editor
|
|
|
664 |
* @param offs the offset in the document >= 0
|
|
|
665 |
* @return the location in the model of the word start >= 0
|
|
|
666 |
* @exception BadLocationException if the offset is out of range
|
|
|
667 |
*/
|
|
|
668 |
public static final int getNextWord(JTextComponent c, int offs) throws BadLocationException {
|
|
|
669 |
int nextWord;
|
|
|
670 |
Element line = getParagraphElement(c, offs);
|
|
|
671 |
for (nextWord = getNextWordInParagraph(c, line, offs, false);
|
|
|
672 |
nextWord == BreakIterator.DONE;
|
|
|
673 |
nextWord = getNextWordInParagraph(c, line, offs, true)) {
|
|
|
674 |
|
|
|
675 |
// didn't find in this line, try the next line
|
|
|
676 |
offs = line.getEndOffset();
|
|
|
677 |
line = getParagraphElement(c, offs);
|
|
|
678 |
}
|
|
|
679 |
return nextWord;
|
|
|
680 |
}
|
|
|
681 |
|
|
|
682 |
/**
|
|
|
683 |
* Finds the next word in the given elements text. The first
|
|
|
684 |
* parameter allows searching multiple paragraphs where even
|
|
|
685 |
* the first offset is desired.
|
|
|
686 |
* Returns the offset of the next word, or BreakIterator.DONE
|
|
|
687 |
* if there are no more words in the element.
|
|
|
688 |
*/
|
|
|
689 |
static int getNextWordInParagraph(JTextComponent c, Element line, int offs, boolean first) throws BadLocationException {
|
|
|
690 |
if (line == null) {
|
|
|
691 |
throw new BadLocationException("No more words", offs);
|
|
|
692 |
}
|
|
|
693 |
Document doc = line.getDocument();
|
|
|
694 |
int lineStart = line.getStartOffset();
|
|
|
695 |
int lineEnd = Math.min(line.getEndOffset(), doc.getLength());
|
|
|
696 |
if ((offs >= lineEnd) || (offs < lineStart)) {
|
|
|
697 |
throw new BadLocationException("No more words", offs);
|
|
|
698 |
}
|
|
|
699 |
Segment seg = SegmentCache.getSharedSegment();
|
|
|
700 |
doc.getText(lineStart, lineEnd - lineStart, seg);
|
|
|
701 |
BreakIterator words = BreakIterator.getWordInstance(c.getLocale());
|
|
|
702 |
words.setText(seg);
|
|
|
703 |
if ((first && (words.first() == (seg.offset + offs - lineStart))) &&
|
|
|
704 |
(! Character.isWhitespace(seg.array[words.first()]))) {
|
|
|
705 |
|
|
|
706 |
return offs;
|
|
|
707 |
}
|
|
|
708 |
int wordPosition = words.following(seg.offset + offs - lineStart);
|
|
|
709 |
if ((wordPosition == BreakIterator.DONE) ||
|
|
|
710 |
(wordPosition >= seg.offset + seg.count)) {
|
|
|
711 |
// there are no more words on this line.
|
|
|
712 |
return BreakIterator.DONE;
|
|
|
713 |
}
|
|
|
714 |
// if we haven't shot past the end... check to
|
|
|
715 |
// see if the current boundary represents whitespace.
|
|
|
716 |
// if so, we need to try again
|
|
|
717 |
char ch = seg.array[wordPosition];
|
|
|
718 |
if (! Character.isWhitespace(ch)) {
|
|
|
719 |
return lineStart + wordPosition - seg.offset;
|
|
|
720 |
}
|
|
|
721 |
|
|
|
722 |
// it was whitespace, try again. The assumption
|
|
|
723 |
// is that it must be a word start if the last
|
|
|
724 |
// one had whitespace following it.
|
|
|
725 |
wordPosition = words.next();
|
|
|
726 |
if (wordPosition != BreakIterator.DONE) {
|
|
|
727 |
offs = lineStart + wordPosition - seg.offset;
|
|
|
728 |
if (offs != lineEnd) {
|
|
|
729 |
return offs;
|
|
|
730 |
}
|
|
|
731 |
}
|
|
|
732 |
SegmentCache.releaseSharedSegment(seg);
|
|
|
733 |
return BreakIterator.DONE;
|
|
|
734 |
}
|
|
|
735 |
|
|
|
736 |
|
|
|
737 |
/**
|
|
|
738 |
* Determine the start of the prev word for the given location.
|
|
|
739 |
* Uses BreakIterator.getWordInstance() to actually get the words.
|
|
|
740 |
*
|
|
|
741 |
* @param c the editor
|
|
|
742 |
* @param offs the offset in the document >= 0
|
|
|
743 |
* @return the location in the model of the word start >= 0
|
|
|
744 |
* @exception BadLocationException if the offset is out of range
|
|
|
745 |
*/
|
|
|
746 |
public static final int getPreviousWord(JTextComponent c, int offs) throws BadLocationException {
|
|
|
747 |
int prevWord;
|
|
|
748 |
Element line = getParagraphElement(c, offs);
|
|
|
749 |
for (prevWord = getPrevWordInParagraph(c, line, offs);
|
|
|
750 |
prevWord == BreakIterator.DONE;
|
|
|
751 |
prevWord = getPrevWordInParagraph(c, line, offs)) {
|
|
|
752 |
|
|
|
753 |
// didn't find in this line, try the prev line
|
|
|
754 |
offs = line.getStartOffset() - 1;
|
|
|
755 |
line = getParagraphElement(c, offs);
|
|
|
756 |
}
|
|
|
757 |
return prevWord;
|
|
|
758 |
}
|
|
|
759 |
|
|
|
760 |
/**
|
|
|
761 |
* Finds the previous word in the given elements text. The first
|
|
|
762 |
* parameter allows searching multiple paragraphs where even
|
|
|
763 |
* the first offset is desired.
|
|
|
764 |
* Returns the offset of the next word, or BreakIterator.DONE
|
|
|
765 |
* if there are no more words in the element.
|
|
|
766 |
*/
|
|
|
767 |
static int getPrevWordInParagraph(JTextComponent c, Element line, int offs) throws BadLocationException {
|
|
|
768 |
if (line == null) {
|
|
|
769 |
throw new BadLocationException("No more words", offs);
|
|
|
770 |
}
|
|
|
771 |
Document doc = line.getDocument();
|
|
|
772 |
int lineStart = line.getStartOffset();
|
|
|
773 |
int lineEnd = line.getEndOffset();
|
|
|
774 |
if ((offs > lineEnd) || (offs < lineStart)) {
|
|
|
775 |
throw new BadLocationException("No more words", offs);
|
|
|
776 |
}
|
|
|
777 |
Segment seg = SegmentCache.getSharedSegment();
|
|
|
778 |
doc.getText(lineStart, lineEnd - lineStart, seg);
|
|
|
779 |
BreakIterator words = BreakIterator.getWordInstance(c.getLocale());
|
|
|
780 |
words.setText(seg);
|
|
|
781 |
if (words.following(seg.offset + offs - lineStart) == BreakIterator.DONE) {
|
|
|
782 |
words.last();
|
|
|
783 |
}
|
|
|
784 |
int wordPosition = words.previous();
|
|
|
785 |
if (wordPosition == (seg.offset + offs - lineStart)) {
|
|
|
786 |
wordPosition = words.previous();
|
|
|
787 |
}
|
|
|
788 |
|
|
|
789 |
if (wordPosition == BreakIterator.DONE) {
|
|
|
790 |
// there are no more words on this line.
|
|
|
791 |
return BreakIterator.DONE;
|
|
|
792 |
}
|
|
|
793 |
// if we haven't shot past the end... check to
|
|
|
794 |
// see if the current boundary represents whitespace.
|
|
|
795 |
// if so, we need to try again
|
|
|
796 |
char ch = seg.array[wordPosition];
|
|
|
797 |
if (! Character.isWhitespace(ch)) {
|
|
|
798 |
return lineStart + wordPosition - seg.offset;
|
|
|
799 |
}
|
|
|
800 |
|
|
|
801 |
// it was whitespace, try again. The assumption
|
|
|
802 |
// is that it must be a word start if the last
|
|
|
803 |
// one had whitespace following it.
|
|
|
804 |
wordPosition = words.previous();
|
|
|
805 |
if (wordPosition != BreakIterator.DONE) {
|
|
|
806 |
return lineStart + wordPosition - seg.offset;
|
|
|
807 |
}
|
|
|
808 |
SegmentCache.releaseSharedSegment(seg);
|
|
|
809 |
return BreakIterator.DONE;
|
|
|
810 |
}
|
|
|
811 |
|
|
|
812 |
/**
|
|
|
813 |
* Determines the element to use for a paragraph/line.
|
|
|
814 |
*
|
|
|
815 |
* @param c the editor
|
|
|
816 |
* @param offs the starting offset in the document >= 0
|
|
|
817 |
* @return the element
|
|
|
818 |
*/
|
|
|
819 |
public static final Element getParagraphElement(JTextComponent c, int offs) {
|
|
|
820 |
Document doc = c.getDocument();
|
|
|
821 |
if (doc instanceof StyledDocument) {
|
|
|
822 |
return ((StyledDocument)doc).getParagraphElement(offs);
|
|
|
823 |
}
|
|
|
824 |
Element map = doc.getDefaultRootElement();
|
|
|
825 |
int index = map.getElementIndex(offs);
|
|
|
826 |
Element paragraph = map.getElement(index);
|
|
|
827 |
if ((offs >= paragraph.getStartOffset()) && (offs < paragraph.getEndOffset())) {
|
|
|
828 |
return paragraph;
|
|
|
829 |
}
|
|
|
830 |
return null;
|
|
|
831 |
}
|
|
|
832 |
|
|
|
833 |
static boolean isComposedTextElement(Document doc, int offset) {
|
|
|
834 |
Element elem = doc.getDefaultRootElement();
|
|
|
835 |
while (!elem.isLeaf()) {
|
|
|
836 |
elem = elem.getElement(elem.getElementIndex(offset));
|
|
|
837 |
}
|
|
|
838 |
return isComposedTextElement(elem);
|
|
|
839 |
}
|
|
|
840 |
|
|
|
841 |
static boolean isComposedTextElement(Element elem) {
|
|
|
842 |
AttributeSet as = elem.getAttributes();
|
|
|
843 |
return isComposedTextAttributeDefined(as);
|
|
|
844 |
}
|
|
|
845 |
|
|
|
846 |
static boolean isComposedTextAttributeDefined(AttributeSet as) {
|
|
|
847 |
return ((as != null) &&
|
|
|
848 |
(as.isDefined(StyleConstants.ComposedTextAttribute)));
|
|
|
849 |
}
|
|
|
850 |
|
|
|
851 |
/**
|
|
|
852 |
* Draws the given composed text passed from an input method.
|
|
|
853 |
*
|
|
|
854 |
* @param view View hosting text
|
|
|
855 |
* @param attr the attributes containing the composed text
|
|
|
856 |
* @param g the graphics context
|
|
|
857 |
* @param x the X origin
|
|
|
858 |
* @param y the Y origin
|
|
|
859 |
* @param p0 starting offset in the composed text to be rendered
|
|
|
860 |
* @param p1 ending offset in the composed text to be rendered
|
|
|
861 |
* @return the new insertion position
|
|
|
862 |
*/
|
|
|
863 |
static int drawComposedText(View view, AttributeSet attr, Graphics g,
|
|
|
864 |
int x, int y, int p0, int p1)
|
|
|
865 |
throws BadLocationException {
|
|
|
866 |
Graphics2D g2d = (Graphics2D)g;
|
|
|
867 |
AttributedString as = (AttributedString)attr.getAttribute(
|
|
|
868 |
StyleConstants.ComposedTextAttribute);
|
|
|
869 |
as.addAttribute(TextAttribute.FONT, g.getFont());
|
|
|
870 |
|
|
|
871 |
if (p0 >= p1)
|
|
|
872 |
return x;
|
|
|
873 |
|
|
|
874 |
AttributedCharacterIterator aci = as.getIterator(null, p0, p1);
|
|
|
875 |
return x + (int)SwingUtilities2.drawString(
|
|
|
876 |
getJComponent(view), g2d,aci,x,y);
|
|
|
877 |
}
|
|
|
878 |
|
|
|
879 |
/**
|
|
|
880 |
* Paints the composed text in a GlyphView
|
|
|
881 |
*/
|
|
|
882 |
static void paintComposedText(Graphics g, Rectangle alloc, GlyphView v) {
|
|
|
883 |
if (g instanceof Graphics2D) {
|
|
|
884 |
Graphics2D g2d = (Graphics2D) g;
|
|
|
885 |
int p0 = v.getStartOffset();
|
|
|
886 |
int p1 = v.getEndOffset();
|
|
|
887 |
AttributeSet attrSet = v.getElement().getAttributes();
|
|
|
888 |
AttributedString as =
|
|
|
889 |
(AttributedString)attrSet.getAttribute(StyleConstants.ComposedTextAttribute);
|
|
|
890 |
int start = v.getElement().getStartOffset();
|
|
|
891 |
int y = alloc.y + alloc.height - (int)v.getGlyphPainter().getDescent(v);
|
|
|
892 |
int x = alloc.x;
|
|
|
893 |
|
|
|
894 |
//Add text attributes
|
|
|
895 |
as.addAttribute(TextAttribute.FONT, v.getFont());
|
|
|
896 |
as.addAttribute(TextAttribute.FOREGROUND, v.getForeground());
|
|
|
897 |
if (StyleConstants.isBold(v.getAttributes())) {
|
|
|
898 |
as.addAttribute(TextAttribute.WEIGHT, TextAttribute.WEIGHT_BOLD);
|
|
|
899 |
}
|
|
|
900 |
if (StyleConstants.isItalic(v.getAttributes())) {
|
|
|
901 |
as.addAttribute(TextAttribute.POSTURE, TextAttribute.POSTURE_OBLIQUE);
|
|
|
902 |
}
|
|
|
903 |
if (v.isUnderline()) {
|
|
|
904 |
as.addAttribute(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON);
|
|
|
905 |
}
|
|
|
906 |
if (v.isStrikeThrough()) {
|
|
|
907 |
as.addAttribute(TextAttribute.STRIKETHROUGH, TextAttribute.STRIKETHROUGH_ON);
|
|
|
908 |
}
|
|
|
909 |
if (v.isSuperscript()) {
|
|
|
910 |
as.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER);
|
|
|
911 |
}
|
|
|
912 |
if (v.isSubscript()) {
|
|
|
913 |
as.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUB);
|
|
|
914 |
}
|
|
|
915 |
|
|
|
916 |
// draw
|
|
|
917 |
AttributedCharacterIterator aci = as.getIterator(null, p0 - start, p1 - start);
|
|
|
918 |
SwingUtilities2.drawString(getJComponent(v),
|
|
|
919 |
g2d,aci,x,y);
|
|
|
920 |
}
|
|
|
921 |
}
|
|
|
922 |
|
|
|
923 |
/*
|
|
|
924 |
* Convenience function for determining ComponentOrientation. Helps us
|
|
|
925 |
* avoid having Munge directives throughout the code.
|
|
|
926 |
*/
|
|
|
927 |
static boolean isLeftToRight( java.awt.Component c ) {
|
|
|
928 |
return c.getComponentOrientation().isLeftToRight();
|
|
|
929 |
}
|
|
|
930 |
|
|
|
931 |
|
|
|
932 |
/**
|
|
|
933 |
* Provides a way to determine the next visually represented model
|
|
|
934 |
* location that one might place a caret. Some views may not be visible,
|
|
|
935 |
* they might not be in the same order found in the model, or they just
|
|
|
936 |
* might not allow access to some of the locations in the model.
|
|
|
937 |
* <p>
|
|
|
938 |
* This implementation assumes the views are layed out in a logical
|
|
|
939 |
* manner. That is, that the view at index x + 1 is visually after
|
|
|
940 |
* the View at index x, and that the View at index x - 1 is visually
|
|
|
941 |
* before the View at x. There is support for reversing this behavior
|
|
|
942 |
* only if the passed in <code>View</code> is an instance of
|
|
|
943 |
* <code>CompositeView</code>. The <code>CompositeView</code>
|
|
|
944 |
* must then override the <code>flipEastAndWestAtEnds</code> method.
|
|
|
945 |
*
|
|
|
946 |
* @param v View to query
|
|
|
947 |
* @param pos the position to convert >= 0
|
|
|
948 |
* @param a the allocated region to render into
|
|
|
949 |
* @param direction the direction from the current position that can
|
|
|
950 |
* be thought of as the arrow keys typically found on a keyboard;
|
|
|
951 |
* this may be one of the following:
|
|
|
952 |
* <ul>
|
|
|
953 |
* <li><code>SwingConstants.WEST</code>
|
|
|
954 |
* <li><code>SwingConstants.EAST</code>
|
|
|
955 |
* <li><code>SwingConstants.NORTH</code>
|
|
|
956 |
* <li><code>SwingConstants.SOUTH</code>
|
|
|
957 |
* </ul>
|
|
|
958 |
* @param biasRet an array contain the bias that was checked
|
|
|
959 |
* @return the location within the model that best represents the next
|
|
|
960 |
* location visual position
|
|
|
961 |
* @exception BadLocationException
|
|
|
962 |
* @exception IllegalArgumentException if <code>direction</code> is invalid
|
|
|
963 |
*/
|
|
|
964 |
static int getNextVisualPositionFrom(View v, int pos, Position.Bias b,
|
|
|
965 |
Shape alloc, int direction,
|
|
|
966 |
Position.Bias[] biasRet)
|
|
|
967 |
throws BadLocationException {
|
|
|
968 |
if (v.getViewCount() == 0) {
|
|
|
969 |
// Nothing to do.
|
|
|
970 |
return pos;
|
|
|
971 |
}
|
|
|
972 |
boolean top = (direction == SwingConstants.NORTH ||
|
|
|
973 |
direction == SwingConstants.WEST);
|
|
|
974 |
int retValue;
|
|
|
975 |
if (pos == -1) {
|
|
|
976 |
// Start from the first View.
|
|
|
977 |
int childIndex = (top) ? v.getViewCount() - 1 : 0;
|
|
|
978 |
View child = v.getView(childIndex);
|
|
|
979 |
Shape childBounds = v.getChildAllocation(childIndex, alloc);
|
|
|
980 |
retValue = child.getNextVisualPositionFrom(pos, b, childBounds,
|
|
|
981 |
direction, biasRet);
|
|
|
982 |
if (retValue == -1 && !top && v.getViewCount() > 1) {
|
|
|
983 |
// Special case that should ONLY happen if first view
|
|
|
984 |
// isn't valid (can happen when end position is put at
|
|
|
985 |
// beginning of line.
|
|
|
986 |
child = v.getView(1);
|
|
|
987 |
childBounds = v.getChildAllocation(1, alloc);
|
|
|
988 |
retValue = child.getNextVisualPositionFrom(-1, biasRet[0],
|
|
|
989 |
childBounds,
|
|
|
990 |
direction, biasRet);
|
|
|
991 |
}
|
|
|
992 |
}
|
|
|
993 |
else {
|
|
|
994 |
int increment = (top) ? -1 : 1;
|
|
|
995 |
int childIndex;
|
|
|
996 |
if (b == Position.Bias.Backward && pos > 0) {
|
|
|
997 |
childIndex = v.getViewIndex(pos - 1, Position.Bias.Forward);
|
|
|
998 |
}
|
|
|
999 |
else {
|
|
|
1000 |
childIndex = v.getViewIndex(pos, Position.Bias.Forward);
|
|
|
1001 |
}
|
|
|
1002 |
View child = v.getView(childIndex);
|
|
|
1003 |
Shape childBounds = v.getChildAllocation(childIndex, alloc);
|
|
|
1004 |
retValue = child.getNextVisualPositionFrom(pos, b, childBounds,
|
|
|
1005 |
direction, biasRet);
|
|
|
1006 |
if ((direction == SwingConstants.EAST ||
|
|
|
1007 |
direction == SwingConstants.WEST) &&
|
|
|
1008 |
(v instanceof CompositeView) &&
|
|
|
1009 |
((CompositeView)v).flipEastAndWestAtEnds(pos, b)) {
|
|
|
1010 |
increment *= -1;
|
|
|
1011 |
}
|
|
|
1012 |
childIndex += increment;
|
|
|
1013 |
if (retValue == -1 && childIndex >= 0 &&
|
|
|
1014 |
childIndex < v.getViewCount()) {
|
|
|
1015 |
child = v.getView(childIndex);
|
|
|
1016 |
childBounds = v.getChildAllocation(childIndex, alloc);
|
|
|
1017 |
retValue = child.getNextVisualPositionFrom(
|
|
|
1018 |
-1, b, childBounds, direction, biasRet);
|
|
|
1019 |
// If there is a bias change, it is a fake position
|
|
|
1020 |
// and we should skip it. This is usually the result
|
|
|
1021 |
// of two elements side be side flowing the same way.
|
|
|
1022 |
if (retValue == pos && biasRet[0] != b) {
|
|
|
1023 |
return getNextVisualPositionFrom(v, pos, biasRet[0],
|
|
|
1024 |
alloc, direction,
|
|
|
1025 |
biasRet);
|
|
|
1026 |
}
|
|
|
1027 |
}
|
|
|
1028 |
else if (retValue != -1 && biasRet[0] != b &&
|
|
|
1029 |
((increment == 1 && child.getEndOffset() == retValue) ||
|
|
|
1030 |
(increment == -1 &&
|
|
|
1031 |
child.getStartOffset() == retValue)) &&
|
|
|
1032 |
childIndex >= 0 && childIndex < v.getViewCount()) {
|
|
|
1033 |
// Reached the end of a view, make sure the next view
|
|
|
1034 |
// is a different direction.
|
|
|
1035 |
child = v.getView(childIndex);
|
|
|
1036 |
childBounds = v.getChildAllocation(childIndex, alloc);
|
|
|
1037 |
Position.Bias originalBias = biasRet[0];
|
|
|
1038 |
int nextPos = child.getNextVisualPositionFrom(
|
|
|
1039 |
-1, b, childBounds, direction, biasRet);
|
|
|
1040 |
if (biasRet[0] == b) {
|
|
|
1041 |
retValue = nextPos;
|
|
|
1042 |
}
|
|
|
1043 |
else {
|
|
|
1044 |
biasRet[0] = originalBias;
|
|
|
1045 |
}
|
|
|
1046 |
}
|
|
|
1047 |
}
|
|
|
1048 |
return retValue;
|
|
|
1049 |
}
|
|
|
1050 |
}
|