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Diffstat (limited to 'libjava/javax/swing/text/Utilities.java')
| -rw-r--r-- | libjava/javax/swing/text/Utilities.java | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/libjava/javax/swing/text/Utilities.java b/libjava/javax/swing/text/Utilities.java deleted file mode 100644 index d40408ddc3f..00000000000 --- a/libjava/javax/swing/text/Utilities.java +++ /dev/null @@ -1,198 +0,0 @@ -/* Utilities.java -- - Copyright (C) 2004, 2005 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package javax.swing.text; - -import java.awt.FontMetrics; -import java.awt.Graphics; - -/** - * A set of utilities to deal with text. This is used by several other classes - * inside this package. - * - * @author Roman Kennke (roman@ontographics.com) - */ -public class Utilities -{ - /** - * The length of the char buffer that holds the characters to be drawn. - */ - private static final int BUF_LENGTH = 64; - - /** - * Creates a new <code>Utilities</code> object. - */ - public Utilities() - { - // Nothing to be done here. - } - - /** - * Draws the given text segment. Contained tabs and newline characters - * are taken into account. Tabs are expanded using the - * specified {@link TabExpander}. - * - * @param s the text fragment to be drawn. - * @param x the x position for drawing. - * @param y the y position for drawing. - * @param g the {@link Graphics} context for drawing. - * @param e the {@link TabExpander} which specifies the Tab-expanding - * technique. - * @param startOffset starting offset in the text. - * @return the x coordinate at the end of the drawn text. - */ - public static final int drawTabbedText(Segment s, int x, int y, Graphics g, - TabExpander e, int startOffset) - { - // This buffers the chars to be drawn. - char[] buffer = s.array; - - - // The current x and y pixel coordinates. - int pixelX = x; - int pixelY = y; - - // The font metrics of the current selected font. - FontMetrics metrics = g.getFontMetrics(); - int ascent = metrics.getAscent(); - - int pixelWidth = 0; - int pos = s.offset; - int len = 0; - - for (int offset = s.offset; offset < (s.offset + s.count); ++offset) - { - char c = buffer[offset]; - if (c == '\t' || c == '\n') - { - if (len > 0) { - g.drawChars(buffer, pos, len, pixelX, pixelY + ascent); - pixelX += pixelWidth; - pixelWidth = 0; - } - pos = offset+1; - len = 0; - } - - switch (c) - { - case '\t': - // In case we have a tab, we just 'jump' over the tab. - // When we have no tab expander we just use the width of ' '. - if (e != null) - pixelX = (int) e.nextTabStop((float) pixelX, - startOffset + offset - s.offset); - else - pixelX += metrics.charWidth(' '); - break; - case '\n': - // In case we have a newline, we must jump to the next line. - pixelY += metrics.getHeight(); - pixelX = x; - break; - default: - ++len; - pixelWidth += metrics.charWidth(buffer[offset]); - break; - } - } - - if (len > 0) - g.drawChars(buffer, pos, len, pixelX, pixelY + ascent); - - return pixelX; - } - - /** - * Determines the width, that the given text <code>s</code> would take - * if it was printed with the given {@link java.awt.FontMetrics} on the - * specified screen position. - * @param s the text fragment - * @param metrics the font metrics of the font to be used - * @param x the x coordinate of the point at which drawing should be done - * @param e the {@link TabExpander} to be used - * @param startOffset the index in <code>s</code> where to start - * @returns the width of the given text s. This takes tabs and newlines - * into account. - */ - public static final int getTabbedTextWidth(Segment s, FontMetrics metrics, - int x, TabExpander e, - int startOffset) - { - // This buffers the chars to be drawn. - char[] buffer = s.array; - - // The current x coordinate. - int pixelX = x; - - // The current maximum width. - int maxWidth = 0; - - for (int offset = s.offset; offset < (s.offset + s.count); ++offset) - { - switch (buffer[offset]) - { - case '\t': - // In case we have a tab, we just 'jump' over the tab. - // When we have no tab expander we just use the width of 'm'. - if (e != null) - pixelX = (int) e.nextTabStop((float) pixelX, - startOffset + offset - s.offset); - else - pixelX += metrics.charWidth(' '); - break; - case '\n': - // In case we have a newline, we must 'draw' - // the buffer and jump on the next line. - pixelX += metrics.charWidth(buffer[offset]); - maxWidth = Math.max(maxWidth, pixelX - x); - pixelX = x; - break; - default: - // Here we draw the char. - pixelX += metrics.charWidth(buffer[offset]); - break; - } - } - - // Take the last line into account. - maxWidth = Math.max(maxWidth, pixelX - x); - - return maxWidth; - } -} |