| /* | |
| * Copyright (c) 2002, 2024, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * This code 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 | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| * or visit www.oracle.com if you need additional information or have any | |
| * questions. | |
| */ | |
| package sun.swing; | |
| import java.awt.AWTEvent; | |
| import java.awt.Color; | |
| import java.awt.Component; | |
| import java.awt.Container; | |
| import java.awt.Dimension; | |
| import java.awt.EventQueue; | |
| import java.awt.FocusTraversalPolicy; | |
| import java.awt.Font; | |
| import java.awt.FontMetrics; | |
| import java.awt.Graphics; | |
| import java.awt.Graphics2D; | |
| import java.awt.GraphicsConfiguration; | |
| import java.awt.GraphicsEnvironment; | |
| import java.awt.Point; | |
| import java.awt.PrintGraphics; | |
| import java.awt.Rectangle; | |
| import java.awt.RenderingHints; | |
| import java.awt.Shape; | |
| import java.awt.Toolkit; | |
| import java.awt.event.InputEvent; | |
| import java.awt.event.KeyEvent; | |
| import java.awt.event.MouseEvent; | |
| import java.awt.font.FontRenderContext; | |
| import java.awt.font.GlyphVector; | |
| import java.awt.font.LineBreakMeasurer; | |
| import java.awt.font.TextAttribute; | |
| import java.awt.font.TextHitInfo; | |
| import java.awt.font.TextLayout; | |
| import java.awt.geom.AffineTransform; | |
| import java.awt.geom.Rectangle2D; | |
| import java.awt.print.PrinterGraphics; | |
| import java.beans.PropertyChangeEvent; | |
| import java.io.BufferedInputStream; | |
| import java.io.IOException; | |
| import java.io.InputStream; | |
| import java.lang.reflect.Modifier; | |
| import java.text.AttributedCharacterIterator; | |
| import java.text.AttributedString; | |
| import java.text.BreakIterator; | |
| import java.text.CharacterIterator; | |
| import java.util.HashMap; | |
| import java.util.Locale; | |
| import java.util.Map; | |
| import java.util.Objects; | |
| import java.util.concurrent.Callable; | |
| import java.util.concurrent.Future; | |
| import java.util.concurrent.FutureTask; | |
| import javax.swing.JComponent; | |
| import javax.swing.JList; | |
| import javax.swing.JTable; | |
| import javax.swing.ListCellRenderer; | |
| import javax.swing.ListSelectionModel; | |
| import javax.swing.SwingUtilities; | |
| import javax.swing.UIDefaults; | |
| import javax.swing.UIManager; | |
| import javax.swing.event.TreeModelEvent; | |
| import javax.swing.table.TableCellRenderer; | |
| import javax.swing.table.TableColumnModel; | |
| import javax.swing.text.DefaultCaret; | |
| import javax.swing.text.DefaultHighlighter; | |
| import javax.swing.text.Highlighter; | |
| import javax.swing.text.JTextComponent; | |
| import javax.swing.tree.TreeModel; | |
| import javax.swing.tree.TreePath; | |
| import sun.awt.AWTAccessor; | |
| import sun.awt.AppContext; | |
| import sun.awt.SunToolkit; | |
| import sun.font.FontDesignMetrics; | |
| import sun.font.FontUtilities; | |
| import sun.java2d.SunGraphicsEnvironment; | |
| import sun.print.ProxyPrintGraphics; | |
| import static java.awt.RenderingHints.KEY_TEXT_ANTIALIASING; | |
| import static java.awt.RenderingHints.KEY_TEXT_LCD_CONTRAST; | |
| import static java.awt.RenderingHints.VALUE_FRACTIONALMETRICS_DEFAULT; | |
| import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_DEFAULT; | |
| import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HBGR; | |
| import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB; | |
| import static java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_OFF; | |
| import static java.awt.geom.AffineTransform.TYPE_FLIP; | |
| import static java.awt.geom.AffineTransform.TYPE_MASK_SCALE; | |
| import static java.awt.geom.AffineTransform.TYPE_TRANSLATION; | |
| /** | |
| * A collection of utility methods for Swing. | |
| * <p> | |
| * <b>WARNING:</b> While this class is public, it should not be treated as | |
| * public API and its API may change in incompatible ways between dot dot | |
| * releases and even patch releases. You should not rely on this class even | |
| * existing. | |
| * | |
| */ | |
| public class SwingUtilities2 { | |
| /** | |
| * The {@code AppContext} key for our one {@code LAFState} | |
| * instance. | |
| */ | |
| public static final Object LAF_STATE_KEY = | |
| new StringBuffer("LookAndFeel State"); | |
| public static final Object MENU_SELECTION_MANAGER_LISTENER_KEY = | |
| new StringBuffer("MenuSelectionManager listener key"); | |
| // Maintain a cache of CACHE_SIZE fonts and the left side bearing | |
| // of the characters falling into the range MIN_CHAR_INDEX to | |
| // MAX_CHAR_INDEX. The values in fontCache are created as needed. | |
| private static LSBCacheEntry[] fontCache; | |
| // Windows defines 6 font desktop properties, we will therefore only | |
| // cache the metrics for 6 fonts. | |
| private static final int CACHE_SIZE = 6; | |
| // nextIndex in fontCache to insert a font into. | |
| private static int nextIndex; | |
| // LSBCacheEntry used to search in fontCache to see if we already | |
| // have an entry for a particular font | |
| private static LSBCacheEntry searchKey; | |
| // getLeftSideBearing will consult all characters that fall in the | |
| // range MIN_CHAR_INDEX to MAX_CHAR_INDEX. | |
| private static final int MIN_CHAR_INDEX = (int)'W'; | |
| private static final int MAX_CHAR_INDEX = (int)'W' + 1; | |
| public static final FontRenderContext DEFAULT_FRC = | |
| new FontRenderContext(null, false, false); | |
| /** | |
| * Attribute key for the content elements. If it is set on an element, the | |
| * element is considered to be a line break. | |
| */ | |
| public static final String IMPLIED_CR = "CR"; | |
| /** | |
| * Used to tell a text component, being used as an editor for table | |
| * or tree, how many clicks it took to start editing. | |
| */ | |
| private static final StringBuilder SKIP_CLICK_COUNT = | |
| new StringBuilder("skipClickCount"); | |
| @SuppressWarnings("unchecked") | |
| public static void putAATextInfo(boolean lafCondition, | |
| Map<Object, Object> map) { | |
| SunToolkit.setAAFontSettingsCondition(lafCondition); | |
| Toolkit tk = Toolkit.getDefaultToolkit(); | |
| Object desktopHints = tk.getDesktopProperty(SunToolkit.DESKTOPFONTHINTS); | |
| if (desktopHints instanceof Map) { | |
| Map<Object, Object> hints = (Map<Object, Object>) desktopHints; | |
| Object aaHint = hints.get(KEY_TEXT_ANTIALIASING); | |
| if (aaHint == null | |
| || aaHint == VALUE_TEXT_ANTIALIAS_OFF | |
| || aaHint == VALUE_TEXT_ANTIALIAS_DEFAULT) { | |
| return; | |
| } | |
| map.put(KEY_TEXT_ANTIALIASING, aaHint); | |
| map.put(KEY_TEXT_LCD_CONTRAST, hints.get(KEY_TEXT_LCD_CONTRAST)); | |
| } | |
| } | |
| /** Client Property key for the text maximal offsets for BasicMenuItemUI */ | |
| public static final StringUIClientPropertyKey BASICMENUITEMUI_MAX_TEXT_OFFSET = | |
| new StringUIClientPropertyKey ("maxTextOffset"); | |
| //all access to charsBuffer is to be synchronized on charsBufferLock | |
| private static final int CHAR_BUFFER_SIZE = 100; | |
| private static final Object charsBufferLock = new Object(); | |
| private static char[] charsBuffer = new char[CHAR_BUFFER_SIZE]; | |
| static { | |
| fontCache = new LSBCacheEntry[CACHE_SIZE]; | |
| } | |
| /** | |
| * Fill the character buffer cache. Return the buffer length. | |
| */ | |
| private static int syncCharsBuffer(String s) { | |
| int length = s.length(); | |
| if ((charsBuffer == null) || (charsBuffer.length < length)) { | |
| charsBuffer = s.toCharArray(); | |
| } else { | |
| s.getChars(0, length, charsBuffer, 0); | |
| } | |
| return length; | |
| } | |
| /** | |
| * checks whether TextLayout is required to handle characters. | |
| * | |
| * @param text characters to be tested | |
| * @param start start | |
| * @param limit limit | |
| * @return {@code true} if TextLayout is required | |
| * {@code false} if TextLayout is not required | |
| */ | |
| public static final boolean isComplexLayout(char[] text, int start, int limit) { | |
| return FontUtilities.isComplexText(text, start, limit); | |
| } | |
| // | |
| // WARNING WARNING WARNING WARNING WARNING WARNING | |
| // Many of the following methods are invoked from older API. | |
| // As this older API was not passed a Component, a null Component may | |
| // now be passed in. For example, SwingUtilities.computeStringWidth | |
| // is implemented to call SwingUtilities2.stringWidth, the | |
| // SwingUtilities variant does not take a JComponent, as such | |
| // SwingUtilities2.stringWidth can be passed a null Component. | |
| // In other words, if you add new functionality to these methods you | |
| // need to gracefully handle null. | |
| // | |
| /** | |
| * Returns the left side bearing of the first character of string. The | |
| * left side bearing is calculated from the passed in | |
| * FontMetrics. If the passed in String is less than one | |
| * character {@code 0} is returned. | |
| * | |
| * @param c JComponent that will display the string | |
| * @param fm FontMetrics used to measure the String width | |
| * @param string String to get the left side bearing for. | |
| * @throws NullPointerException if {@code string} is {@code null} | |
| * | |
| * @return the left side bearing of the first character of string | |
| * or {@code 0} if the string is empty | |
| */ | |
| public static int getLeftSideBearing(JComponent c, FontMetrics fm, | |
| String string) { | |
| if ((string == null) || (string.length() == 0)) { | |
| return 0; | |
| } | |
| return getLeftSideBearing(c, fm, string.charAt(0)); | |
| } | |
| /** | |
| * Returns the left side bearing of the first character of string. The | |
| * left side bearing is calculated from the passed in FontMetrics. | |
| * | |
| * @param c JComponent that will display the string | |
| * @param fm FontMetrics used to measure the String width | |
| * @param firstChar Character to get the left side bearing for. | |
| */ | |
| public static int getLeftSideBearing(JComponent c, FontMetrics fm, | |
| char firstChar) { | |
| int charIndex = (int) firstChar; | |
| if (charIndex < MAX_CHAR_INDEX && charIndex >= MIN_CHAR_INDEX) { | |
| byte[] lsbs = null; | |
| FontRenderContext frc = getFontRenderContext(c, fm); | |
| Font font = fm.getFont(); | |
| synchronized (SwingUtilities2.class) { | |
| LSBCacheEntry entry = null; | |
| if (searchKey == null) { | |
| searchKey = new LSBCacheEntry(frc, font); | |
| } else { | |
| searchKey.reset(frc, font); | |
| } | |
| // See if we already have an entry for this pair | |
| for (LSBCacheEntry cacheEntry : fontCache) { | |
| if (searchKey.equals(cacheEntry)) { | |
| entry = cacheEntry; | |
| break; | |
| } | |
| } | |
| if (entry == null) { | |
| // No entry for this pair, add it. | |
| entry = searchKey; | |
| fontCache[nextIndex] = searchKey; | |
| searchKey = null; | |
| nextIndex = (nextIndex + 1) % CACHE_SIZE; | |
| } | |
| return entry.getLeftSideBearing(firstChar); | |
| } | |
| } | |
| return 0; | |
| } | |
| /** | |
| * Returns the FontMetrics for the current Font of the passed | |
| * in Graphics. This method is used when a Graphics | |
| * is available, typically when painting. If a Graphics is not | |
| * available the JComponent method of the same name should be used. | |
| * <p> | |
| * Callers should pass in a non-null JComponent, the exception | |
| * to this is if a JComponent is not readily available at the time of | |
| * painting. | |
| * <p> | |
| * This does not necessarily return the FontMetrics from the | |
| * Graphics. | |
| * | |
| * @param c JComponent requesting FontMetrics, may be null | |
| * @param g Graphics Graphics | |
| */ | |
| public static FontMetrics getFontMetrics(JComponent c, Graphics g) { | |
| return getFontMetrics(c, g, g.getFont()); | |
| } | |
| /** | |
| * Returns the FontMetrics for the specified Font. | |
| * This method is used when a Graphics is available, typically when | |
| * painting. If a Graphics is not available the JComponent method of | |
| * the same name should be used. | |
| * <p> | |
| * Callers should pass in a non-null JComponent, the exception | |
| * to this is if a JComponent is not readily available at the time of | |
| * painting. | |
| * <p> | |
| * This does not necessarily return the FontMetrics from the | |
| * Graphics. | |
| * | |
| * @param c JComponent requesting FontMetrics, may be null | |
| * @param g Graphics | |
| * @param font Font to get FontMetrics for | |
| */ | |
| @SuppressWarnings("deprecation") | |
| public static FontMetrics getFontMetrics(JComponent c, Graphics g, | |
| Font font) { | |
| if (c != null) { | |
| // Note: We assume that we're using the FontMetrics | |
| // from the widget to lay out text, otherwise we can get | |
| // mismatches when printing. | |
| return c.getFontMetrics(font); | |
| } | |
| return Toolkit.getDefaultToolkit().getFontMetrics(font); | |
| } | |
| /** | |
| * Returns the width of the passed in String. | |
| * If the passed String is {@code null}, returns zero. | |
| * | |
| * @param c JComponent that will display the string, may be null | |
| * @param fm FontMetrics used to measure the String width | |
| * @param string String to get the width of | |
| */ | |
| public static int stringWidth(JComponent c, FontMetrics fm, String string) { | |
| return (int) stringWidth(c, fm, string, false); | |
| } | |
| /** | |
| * Returns the width of the passed in String. | |
| * If the passed String is {@code null}, returns zero. | |
| * | |
| * @param c JComponent that will display the string, may be null | |
| * @param fm FontMetrics used to measure the String width | |
| * @param string String to get the width of | |
| * @param useFPAPI use floating point API | |
| */ | |
| public static float stringWidth(JComponent c, FontMetrics fm, String string, | |
| boolean useFPAPI){ | |
| if (string == null || string.isEmpty()) { | |
| return 0; | |
| } | |
| boolean needsTextLayout = ((c != null) && | |
| (c.getClientProperty(TextAttribute.NUMERIC_SHAPING) != null)); | |
| if (needsTextLayout) { | |
| synchronized(charsBufferLock) { | |
| int length = syncCharsBuffer(string); | |
| needsTextLayout = isComplexLayout(charsBuffer, 0, length); | |
| } | |
| } | |
| if (needsTextLayout) { | |
| TextLayout layout = createTextLayout(c, string, | |
| fm.getFont(), fm.getFontRenderContext()); | |
| return layout.getAdvance(); | |
| } else { | |
| return getFontStringWidth(string, fm, useFPAPI); | |
| } | |
| } | |
| /** | |
| * Clips the passed in String to the space provided. | |
| * | |
| * @param c JComponent that will display the string, may be null | |
| * @param fm FontMetrics used to measure the String width | |
| * @param string String to display | |
| * @param availTextWidth Amount of space that the string can be drawn in | |
| * @return Clipped string that can fit in the provided space. | |
| */ | |
| public static String clipStringIfNecessary(JComponent c, FontMetrics fm, | |
| String string, | |
| int availTextWidth) { | |
| if (string == null || string.isEmpty()) { | |
| return ""; | |
| } | |
| int textWidth = SwingUtilities2.stringWidth(c, fm, string); | |
| if (textWidth > availTextWidth) { | |
| return SwingUtilities2.clipString(c, fm, string, availTextWidth); | |
| } | |
| return string; | |
| } | |
| /** | |
| * Clips the passed in String to the space provided. NOTE: this assumes | |
| * the string does not fit in the available space. | |
| * | |
| * @param c JComponent that will display the string, may be null | |
| * @param fm FontMetrics used to measure the String width | |
| * @param string String to display | |
| * @param availTextWidth Amount of space that the string can be drawn in | |
| * @return Clipped string that can fit in the provided space. | |
| */ | |
| public static String clipString(JComponent c, FontMetrics fm, | |
| String string, int availTextWidth) { | |
| // c may be null here. | |
| String clipString = "..."; | |
| availTextWidth -= SwingUtilities2.stringWidth(c, fm, clipString); | |
| if (availTextWidth <= 0) { | |
| //can not fit any characters | |
| return clipString; | |
| } | |
| boolean needsTextLayout; | |
| synchronized (charsBufferLock) { | |
| int stringLength = syncCharsBuffer(string); | |
| needsTextLayout = | |
| isComplexLayout(charsBuffer, 0, stringLength); | |
| if (!needsTextLayout) { | |
| int width = 0; | |
| for (int nChars = 0; nChars < stringLength; nChars++) { | |
| width += fm.charWidth(charsBuffer[nChars]); | |
| if (width > availTextWidth) { | |
| string = string.substring(0, nChars); | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| if (needsTextLayout) { | |
| AttributedString aString = new AttributedString(string); | |
| if (c != null) { | |
| aString.addAttribute(TextAttribute.NUMERIC_SHAPING, | |
| c.getClientProperty(TextAttribute.NUMERIC_SHAPING)); | |
| } | |
| LineBreakMeasurer measurer = new LineBreakMeasurer( | |
| aString.getIterator(), BreakIterator.getCharacterInstance(), | |
| getFontRenderContext(c, fm)); | |
| string = string.substring(0, measurer.nextOffset(availTextWidth)); | |
| } | |
| return string + clipString; | |
| } | |
| /** | |
| * Draws the string at the specified location. | |
| * | |
| * @param c JComponent that will display the string, may be null | |
| * @param g Graphics to draw the text to | |
| * @param text String to display | |
| * @param x X coordinate to draw the text at | |
| * @param y Y coordinate to draw the text at | |
| */ | |
| public static void drawString(JComponent c, Graphics g, String text, | |
| int x, int y) { | |
| drawString(c, g, text, x, y, false); | |
| } | |
| /** | |
| * Draws the string at the specified location. | |
| * | |
| * @param c JComponent that will display the string, may be null | |
| * @param g Graphics to draw the text to | |
| * @param text String to display | |
| * @param x X coordinate to draw the text at | |
| * @param y Y coordinate to draw the text at | |
| * @param useFPAPI use floating point API | |
| */ | |
| public static void drawString(JComponent c, Graphics g, String text, | |
| float x, float y, boolean useFPAPI) { | |
| // c may be null | |
| // All non-editable widgets that draw strings call into this | |
| // methods. By non-editable that means widgets like JLabel, JButton | |
| // but NOT JTextComponents. | |
| if ( text == null || text.length() <= 0 ) { //no need to paint empty strings | |
| return; | |
| } | |
| if (isPrinting(g)) { | |
| Graphics2D g2d = getGraphics2D(g); | |
| if (g2d != null) { | |
| /* The printed text must scale linearly with the UI. | |
| * Calculate the width on screen, obtain a TextLayout with | |
| * advances for the printer graphics FRC, and then justify | |
| * it to fit in the screen width. This distributes the spacing | |
| * more evenly than directly laying out to the screen advances. | |
| */ | |
| String trimmedText = text.stripTrailing(); | |
| if (!trimmedText.isEmpty()) { | |
| float screenWidth = (float) g2d.getFont().getStringBounds | |
| (trimmedText, getFontRenderContext(c)).getWidth(); | |
| TextLayout layout = createTextLayout(c, text, g2d.getFont(), | |
| g2d.getFontRenderContext()); | |
| // If text fits the screenWidth, then do not need to justify | |
| if (SwingUtilities2.stringWidth(c, g2d.getFontMetrics(), | |
| trimmedText) > screenWidth) { | |
| layout = layout.getJustifiedLayout(screenWidth); | |
| } | |
| /* Use alternate print color if specified */ | |
| Color col = g2d.getColor(); | |
| if (col instanceof PrintColorUIResource) { | |
| g2d.setColor(((PrintColorUIResource)col).getPrintColor()); | |
| } | |
| layout.draw(g2d, x, y); | |
| g2d.setColor(col); | |
| } | |
| return; | |
| } | |
| } | |
| // If we get here we're not printing | |
| if (g instanceof Graphics2D) { | |
| Graphics2D g2 = (Graphics2D)g; | |
| boolean needsTextLayout = ((c != null) && | |
| (c.getClientProperty(TextAttribute.NUMERIC_SHAPING) != null)); | |
| if (needsTextLayout) { | |
| synchronized(charsBufferLock) { | |
| int length = syncCharsBuffer(text); | |
| needsTextLayout = isComplexLayout(charsBuffer, 0, length); | |
| } | |
| } | |
| Object aaHint = (c == null) | |
| ? null | |
| : c.getClientProperty(KEY_TEXT_ANTIALIASING); | |
| if (aaHint != null) { | |
| Object oldContrast = null; | |
| Object oldAAValue = g2.getRenderingHint(KEY_TEXT_ANTIALIASING); | |
| if (aaHint != oldAAValue) { | |
| g2.setRenderingHint(KEY_TEXT_ANTIALIASING, aaHint); | |
| } else { | |
| oldAAValue = null; | |
| } | |
| Object lcdContrastHint = c.getClientProperty( | |
| KEY_TEXT_LCD_CONTRAST); | |
| if (lcdContrastHint != null) { | |
| oldContrast = g2.getRenderingHint(KEY_TEXT_LCD_CONTRAST); | |
| if (lcdContrastHint.equals(oldContrast)) { | |
| oldContrast = null; | |
| } else { | |
| g2.setRenderingHint(KEY_TEXT_LCD_CONTRAST, | |
| lcdContrastHint); | |
| } | |
| } | |
| if (needsTextLayout) { | |
| TextLayout layout = createTextLayout(c, text, g2.getFont(), | |
| g2.getFontRenderContext()); | |
| layout.draw(g2, x, y); | |
| } else { | |
| g2.drawString(text, x, y); | |
| } | |
| if (oldAAValue != null) { | |
| g2.setRenderingHint(KEY_TEXT_ANTIALIASING, oldAAValue); | |
| } | |
| if (oldContrast != null) { | |
| g2.setRenderingHint(KEY_TEXT_LCD_CONTRAST, oldContrast); | |
| } | |
| return; | |
| } | |
| if (needsTextLayout){ | |
| TextLayout layout = createTextLayout(c, text, g2.getFont(), | |
| g2.getFontRenderContext()); | |
| layout.draw(g2, x, y); | |
| return; | |
| } | |
| } | |
| g.drawString(text, (int) x, (int) y); | |
| } | |
| /** | |
| * Draws the string at the specified location underlining the specified | |
| * character. | |
| * | |
| * @param c JComponent that will display the string, may be null | |
| * @param g Graphics to draw the text to | |
| * @param text String to display | |
| * @param underlinedIndex Index of a character in the string to underline | |
| * @param x X coordinate to draw the text at | |
| * @param y Y coordinate to draw the text at | |
| */ | |
| public static void drawStringUnderlineCharAt(JComponent c,Graphics g, | |
| String text, int underlinedIndex, int x, int y) { | |
| drawStringUnderlineCharAt(c, g, text, underlinedIndex, x, y, false); | |
| } | |
| /** | |
| * Draws the string at the specified location underlining the specified | |
| * character. | |
| * | |
| * @param c JComponent that will display the string, may be null | |
| * @param g Graphics to draw the text to | |
| * @param text String to display | |
| * @param underlinedIndex Index of a character in the string to underline | |
| * @param x X coordinate to draw the text at | |
| * @param y Y coordinate to draw the text at | |
| * @param useFPAPI use floating point API | |
| */ | |
| public static void drawStringUnderlineCharAt(JComponent c, Graphics g, | |
| String text, int underlinedIndex, | |
| float x, float y, | |
| boolean useFPAPI) { | |
| if (text == null || text.length() <= 0) { | |
| return; | |
| } | |
| SwingUtilities2.drawString(c, g, text, x, y, useFPAPI); | |
| int textLength = text.length(); | |
| if (underlinedIndex >= 0 && underlinedIndex < textLength ) { | |
| float underlineRectY = y; | |
| int underlineRectHeight = 1; | |
| float underlineRectX = 0; | |
| int underlineRectWidth = 0; | |
| boolean isPrinting = isPrinting(g); | |
| boolean needsTextLayout = isPrinting; | |
| if (!needsTextLayout) { | |
| synchronized (charsBufferLock) { | |
| syncCharsBuffer(text); | |
| needsTextLayout = | |
| isComplexLayout(charsBuffer, 0, textLength); | |
| } | |
| } | |
| if (!needsTextLayout) { | |
| FontMetrics fm = g.getFontMetrics(); | |
| underlineRectX = x + | |
| SwingUtilities2.stringWidth(c,fm, | |
| text.substring(0,underlinedIndex)); | |
| underlineRectWidth = fm.charWidth(text. | |
| charAt(underlinedIndex)); | |
| } else { | |
| Graphics2D g2d = getGraphics2D(g); | |
| if (g2d != null) { | |
| TextLayout layout = | |
| createTextLayout(c, text, g2d.getFont(), | |
| g2d.getFontRenderContext()); | |
| if (isPrinting) { | |
| float screenWidth = (float)g2d.getFont(). | |
| getStringBounds(text, getFontRenderContext(c)).getWidth(); | |
| // If text fits the screenWidth, then do not need to justify | |
| if (SwingUtilities2.stringWidth(c, g2d.getFontMetrics(), | |
| text) > screenWidth) { | |
| layout = layout.getJustifiedLayout(screenWidth); | |
| } | |
| } | |
| TextHitInfo leading = | |
| TextHitInfo.leading(underlinedIndex); | |
| TextHitInfo trailing = | |
| TextHitInfo.trailing(underlinedIndex); | |
| Shape shape = | |
| layout.getVisualHighlightShape(leading, trailing); | |
| Rectangle rect = shape.getBounds(); | |
| underlineRectX = x + rect.x; | |
| underlineRectWidth = rect.width; | |
| } | |
| } | |
| g.fillRect((int) underlineRectX, (int) underlineRectY + 1, | |
| underlineRectWidth, underlineRectHeight); | |
| } | |
| } | |
| /** | |
| * A variation of locationToIndex() which only returns an index if the | |
| * Point is within the actual bounds of a list item (not just in the cell) | |
| * and if the JList has the "List.isFileList" client property set. | |
| * Otherwise, this method returns -1. | |
| * This is used to make Windows {@literal L&F} JFileChooser act | |
| * like native dialogs. | |
| */ | |
| public static int loc2IndexFileList(JList<?> list, Point point) { | |
| int index = list.locationToIndex(point); | |
| if (index != -1) { | |
| Object bySize = list.getClientProperty("List.isFileList"); | |
| if (bySize instanceof Boolean && ((Boolean)bySize).booleanValue() && | |
| !pointIsInActualBounds(list, index, point)) { | |
| index = -1; | |
| } | |
| } | |
| return index; | |
| } | |
| /** | |
| * Returns true if the given point is within the actual bounds of the | |
| * JList item at index (not just inside the cell). | |
| */ | |
| private static <T> boolean pointIsInActualBounds(JList<T> list, int index, | |
| Point point) { | |
| ListCellRenderer<? super T> renderer = list.getCellRenderer(); | |
| T value = list.getModel().getElementAt(index); | |
| Component item = renderer.getListCellRendererComponent(list, | |
| value, index, false, false); | |
| Dimension itemSize = item.getPreferredSize(); | |
| Rectangle cellBounds = list.getCellBounds(index, index); | |
| if (!item.getComponentOrientation().isLeftToRight()) { | |
| cellBounds.x += (cellBounds.width - itemSize.width); | |
| } | |
| cellBounds.width = itemSize.width; | |
| return cellBounds.contains(point); | |
| } | |
| /** | |
| * Returns true if the given point is outside the preferredSize of the | |
| * item at the given row of the table. (Column must be 0). | |
| * Does not check the "Table.isFileList" property. That should be checked | |
| * before calling this method. | |
| * This is used to make Windows {@literal L&F} JFileChooser act | |
| * like native dialogs. | |
| */ | |
| public static boolean pointOutsidePrefSize(JTable table, int row, int column, Point p) { | |
| if (table.convertColumnIndexToModel(column) != 0 || row == -1) { | |
| return true; | |
| } | |
| TableCellRenderer tcr = table.getCellRenderer(row, column); | |
| Object value = table.getValueAt(row, column); | |
| Component cell = tcr.getTableCellRendererComponent(table, value, false, | |
| false, row, column); | |
| Dimension itemSize = cell.getPreferredSize(); | |
| Rectangle cellBounds = table.getCellRect(row, column, false); | |
| cellBounds.width = itemSize.width; | |
| cellBounds.height = itemSize.height; | |
| // See if coords are inside | |
| // ASSUME: mouse x,y will never be < cell's x,y | |
| assert (p.x >= cellBounds.x && p.y >= cellBounds.y); | |
| return p.x > cellBounds.x + cellBounds.width || | |
| p.y > cellBounds.y + cellBounds.height; | |
| } | |
| /** | |
| * Set the lead and anchor without affecting selection. | |
| */ | |
| public static void setLeadAnchorWithoutSelection(ListSelectionModel model, | |
| int lead, int anchor) { | |
| if (anchor == -1) { | |
| anchor = lead; | |
| } | |
| if (lead == -1) { | |
| model.setAnchorSelectionIndex(-1); | |
| model.setLeadSelectionIndex(-1); | |
| } else { | |
| if (model.isSelectedIndex(lead)) { | |
| model.addSelectionInterval(lead, lead); | |
| } else { | |
| model.removeSelectionInterval(lead, lead); | |
| } | |
| model.setAnchorSelectionIndex(anchor); | |
| } | |
| } | |
| /** | |
| * Ignore mouse events if the component is null, not enabled, the event | |
| * is not associated with the left mouse button, or the event has been | |
| * consumed. | |
| */ | |
| public static boolean shouldIgnore(MouseEvent me, JComponent c) { | |
| return c == null || !c.isEnabled() | |
| || !SwingUtilities.isLeftMouseButton(me) | |
| || me.isConsumed(); | |
| } | |
| /** | |
| * Request focus on the given component if it doesn't already have it | |
| * and {@code isRequestFocusEnabled()} returns true. | |
| */ | |
| public static void adjustFocus(JComponent c) { | |
| if (!c.hasFocus() && c.isRequestFocusEnabled()) { | |
| c.requestFocus(); | |
| } | |
| } | |
| /** | |
| * The following draw functions have the same semantic as the | |
| * Graphics methods with the same names. | |
| * | |
| * this is used for printing | |
| */ | |
| public static int drawChars(JComponent c, Graphics g, | |
| char[] data, | |
| int offset, | |
| int length, | |
| int x, | |
| int y) { | |
| return (int) drawChars(c, g, data, offset, length, x, y, false); | |
| } | |
| public static float drawChars(JComponent c, Graphics g, | |
| char[] data, | |
| int offset, | |
| int length, | |
| float x, | |
| float y) { | |
| return drawChars(c, g, data, offset, length, x, y, true); | |
| } | |
| public static float drawChars(JComponent c, Graphics g, | |
| char[] data, | |
| int offset, | |
| int length, | |
| float x, | |
| float y, | |
| boolean useFPAPI) { | |
| if ( length <= 0 ) { //no need to paint empty strings | |
| return x; | |
| } | |
| float nextX = x + getFontCharsWidth(data, offset, length, | |
| getFontMetrics(c, g), | |
| useFPAPI); | |
| if (isPrinting(g)) { | |
| Graphics2D g2d = getGraphics2D(g); | |
| if (g2d != null) { | |
| FontRenderContext deviceFontRenderContext = g2d. | |
| getFontRenderContext(); | |
| FontRenderContext frc = getFontRenderContext(c); | |
| if (frc != null && | |
| !isFontRenderContextPrintCompatible | |
| (deviceFontRenderContext, frc)) { | |
| String text = new String(data, offset, length); | |
| TextLayout layout = new TextLayout(text, g2d.getFont(), | |
| deviceFontRenderContext); | |
| String trimmedText = text.stripTrailing(); | |
| if (!trimmedText.isEmpty()) { | |
| float screenWidth = (float)g2d.getFont(). | |
| getStringBounds(trimmedText, frc).getWidth(); | |
| // If text fits the screenWidth, then do not need to justify | |
| if (SwingUtilities2.stringWidth(c, g2d.getFontMetrics(), | |
| trimmedText) > screenWidth) { | |
| layout = layout.getJustifiedLayout(screenWidth); | |
| } | |
| /* Use alternate print color if specified */ | |
| Color col = g2d.getColor(); | |
| if (col instanceof PrintColorUIResource) { | |
| g2d.setColor(((PrintColorUIResource)col).getPrintColor()); | |
| } | |
| layout.draw(g2d,x,y); | |
| g2d.setColor(col); | |
| } | |
| return nextX; | |
| } | |
| } | |
| } | |
| // Assume we're not printing if we get here, or that we are invoked | |
| // via Swing text printing which is laid out for the printer. | |
| Object aaHint = (c == null) | |
| ? null | |
| : c.getClientProperty(KEY_TEXT_ANTIALIASING); | |
| if (!(g instanceof Graphics2D)) { | |
| g.drawChars(data, offset, length, (int) x, (int) y); | |
| return nextX; | |
| } | |
| Graphics2D g2 = (Graphics2D) g; | |
| if (aaHint != null) { | |
| Object oldContrast = null; | |
| Object oldAAValue = g2.getRenderingHint(KEY_TEXT_ANTIALIASING); | |
| if (aaHint != null && aaHint != oldAAValue) { | |
| g2.setRenderingHint(KEY_TEXT_ANTIALIASING, aaHint); | |
| } else { | |
| oldAAValue = null; | |
| } | |
| Object lcdContrastHint = c.getClientProperty(KEY_TEXT_LCD_CONTRAST); | |
| if (lcdContrastHint != null) { | |
| oldContrast = g2.getRenderingHint(KEY_TEXT_LCD_CONTRAST); | |
| if (lcdContrastHint.equals(oldContrast)) { | |
| oldContrast = null; | |
| } else { | |
| g2.setRenderingHint(KEY_TEXT_LCD_CONTRAST, | |
| lcdContrastHint); | |
| } | |
| } | |
| g2.drawString(new String(data, offset, length), x, y); | |
| if (oldAAValue != null) { | |
| g2.setRenderingHint(KEY_TEXT_ANTIALIASING, oldAAValue); | |
| } | |
| if (oldContrast != null) { | |
| g2.setRenderingHint(KEY_TEXT_LCD_CONTRAST, oldContrast); | |
| } | |
| } | |
| else { | |
| g2.drawString(new String(data, offset, length), x, y); | |
| } | |
| return nextX; | |
| } | |
| public static float getFontCharWidth(char c, FontMetrics fm, | |
| boolean useFPAPI) | |
| { | |
| return getFontCharsWidth(new char[]{c}, 0, 1, fm, useFPAPI); | |
| } | |
| public static float getFontCharsWidth(char[] data, int offset, int len, | |
| FontMetrics fm, | |
| boolean useFPAPI) | |
| { | |
| if (len == 0) { | |
| return 0; | |
| } | |
| if (useFPAPI) { | |
| Rectangle2D bounds = fm.getFont(). | |
| getStringBounds(data, offset, offset + len, | |
| fm.getFontRenderContext()); | |
| return (float) bounds.getWidth(); | |
| } else { | |
| return fm.charsWidth(data, offset, len); | |
| } | |
| } | |
| public static float getFontStringWidth(String data, FontMetrics fm, | |
| boolean useFPAPI) | |
| { | |
| if (useFPAPI) { | |
| Rectangle2D bounds = fm.getFont() | |
| .getStringBounds(data, fm.getFontRenderContext()); | |
| return (float) bounds.getWidth(); | |
| } else { | |
| return fm.stringWidth(data); | |
| } | |
| } | |
| /* | |
| * see documentation for drawChars | |
| * returns the advance | |
| */ | |
| public static float drawString(JComponent c, Graphics g, | |
| AttributedCharacterIterator iterator, | |
| int x, int y) | |
| { | |
| return drawStringImpl(c, g, iterator, x, y); | |
| } | |
| public static float drawString(JComponent c, Graphics g, | |
| AttributedCharacterIterator iterator, | |
| float x, float y) | |
| { | |
| return drawStringImpl(c, g, iterator, x, y); | |
| } | |
| private static float drawStringImpl(JComponent c, Graphics g, | |
| AttributedCharacterIterator iterator, | |
| float x, float y) | |
| { | |
| float retVal; | |
| boolean isPrinting = isPrinting(g); | |
| Color col = g.getColor(); | |
| if (isPrinting) { | |
| /* Use alternate print color if specified */ | |
| if (col instanceof PrintColorUIResource) { | |
| g.setColor(((PrintColorUIResource)col).getPrintColor()); | |
| } | |
| } | |
| Graphics2D g2d = getGraphics2D(g); | |
| if (g2d == null) { | |
| g.drawString(iterator, (int)x, (int)y); //for the cases where advance | |
| //matters it should not happen | |
| retVal = x; | |
| } else { | |
| FontRenderContext frc; | |
| if (isPrinting) { | |
| frc = getFontRenderContext(c); | |
| if (frc.isAntiAliased() || frc.usesFractionalMetrics()) { | |
| frc = new FontRenderContext(frc.getTransform(), false, false); | |
| } | |
| } else if ((frc = getFRCProperty(c)) != null) { | |
| /* frc = frc; ! */ | |
| } else { | |
| frc = g2d.getFontRenderContext(); | |
| } | |
| TextLayout layout; | |
| if (isPrinting) { | |
| FontRenderContext deviceFRC = g2d.getFontRenderContext(); | |
| if (!isFontRenderContextPrintCompatible(frc, deviceFRC)) { | |
| layout = new TextLayout(iterator, deviceFRC); | |
| AttributedCharacterIterator trimmedIt = | |
| getTrimmedTrailingSpacesIterator(iterator); | |
| if (trimmedIt != null) { | |
| float screenWidth = new TextLayout(trimmedIt, frc). | |
| getAdvance(); | |
| layout = layout.getJustifiedLayout(screenWidth); | |
| } | |
| } else { | |
| layout = new TextLayout(iterator, frc); | |
| } | |
| } else { | |
| layout = new TextLayout(iterator, frc); | |
| } | |
| layout.draw(g2d, x, y); | |
| retVal = layout.getAdvance(); | |
| } | |
| if (isPrinting) { | |
| g.setColor(col); | |
| } | |
| return retVal; | |
| } | |
| /** | |
| * This method should be used for drawing a borders over a filled rectangle. | |
| * Draws vertical line, using the current color, between the points {@code | |
| * (x, y1)} and {@code (x, y2)} in graphics context's coordinate system. | |
| * Note: it use {@code Graphics.fillRect()} internally. | |
| * | |
| * @param g Graphics to draw the line to. | |
| * @param x the <i>x</i> coordinate. | |
| * @param y1 the first point's <i>y</i> coordinate. | |
| * @param y2 the second point's <i>y</i> coordinate. | |
| */ | |
| public static void drawVLine(Graphics g, int x, int y1, int y2) { | |
| if (y2 < y1) { | |
| final int temp = y2; | |
| y2 = y1; | |
| y1 = temp; | |
| } | |
| g.fillRect(x, y1, 1, y2 - y1 + 1); | |
| } | |
| /** | |
| * This method should be used for drawing a borders over a filled rectangle. | |
| * Draws horizontal line, using the current color, between the points {@code | |
| * (x1, y)} and {@code (x2, y)} in graphics context's coordinate system. | |
| * Note: it use {@code Graphics.fillRect()} internally. | |
| * | |
| * @param g Graphics to draw the line to. | |
| * @param x1 the first point's <i>x</i> coordinate. | |
| * @param x2 the second point's <i>x</i> coordinate. | |
| * @param y the <i>y</i> coordinate. | |
| */ | |
| public static void drawHLine(Graphics g, int x1, int x2, int y) { | |
| if (x2 < x1) { | |
| final int temp = x2; | |
| x2 = x1; | |
| x1 = temp; | |
| } | |
| g.fillRect(x1, y, x2 - x1 + 1, 1); | |
| } | |
| /** | |
| * This method should be used for drawing a borders over a filled rectangle. | |
| * Draws the outline of the specified rectangle. The left and right edges of | |
| * the rectangle are at {@code x} and {@code x + w}. The top and bottom | |
| * edges are at {@code y} and {@code y + h}. The rectangle is drawn using | |
| * the graphics context's current color. Note: it use {@code | |
| * Graphics.fillRect()} internally. | |
| * | |
| * @param g Graphics to draw the rectangle to. | |
| * @param x the <i>x</i> coordinate of the rectangle to be drawn. | |
| * @param y the <i>y</i> coordinate of the rectangle to be drawn. | |
| * @param w the w of the rectangle to be drawn. | |
| * @param h the h of the rectangle to be drawn. | |
| * @see SwingUtilities2#drawVLine(java.awt.Graphics, int, int, int) | |
| * @see SwingUtilities2#drawHLine(java.awt.Graphics, int, int, int) | |
| */ | |
| public static void drawRect(Graphics g, int x, int y, int w, int h) { | |
| if (w < 0 || h < 0) { | |
| return; | |
| } | |
| if (h == 0 || w == 0) { | |
| g.fillRect(x, y, w + 1, h + 1); | |
| } else { | |
| g.fillRect(x, y, w, 1); | |
| g.fillRect(x + w, y, 1, h); | |
| g.fillRect(x + 1, y + h, w, 1); | |
| g.fillRect(x, y + 1, 1, h); | |
| } | |
| } | |
| private static TextLayout createTextLayout(JComponent c, String s, | |
| Font f, FontRenderContext frc) { | |
| Object shaper = (c == null ? | |
| null : c.getClientProperty(TextAttribute.NUMERIC_SHAPING)); | |
| if (shaper == null) { | |
| return new TextLayout(s, f, frc); | |
| } else { | |
| Map<TextAttribute, Object> a = new HashMap<TextAttribute, Object>(); | |
| a.put(TextAttribute.FONT, f); | |
| a.put(TextAttribute.NUMERIC_SHAPING, shaper); | |
| return new TextLayout(s, a, frc); | |
| } | |
| } | |
| /* | |
| * Checks if two given FontRenderContexts are compatible for printing. | |
| * We can't just use equals as we want to exclude from the comparison : | |
| * + whether AA is set as irrelevant for printing and shouldn't affect | |
| * printed metrics anyway | |
| * + any translation component in the transform of either FRC, as it | |
| * does not affect metrics. | |
| * Compatible means no special handling needed for text painting | |
| */ | |
| private static boolean | |
| isFontRenderContextPrintCompatible(FontRenderContext frc1, | |
| FontRenderContext frc2) { | |
| if (frc1 == frc2) { | |
| return true; | |
| } | |
| if (frc1 == null || frc2 == null) { // not supposed to happen | |
| return false; | |
| } | |
| if (frc1.getFractionalMetricsHint() != | |
| frc2.getFractionalMetricsHint()) { | |
| return false; | |
| } | |
| /* If both are identity, return true */ | |
| if (!frc1.isTransformed() && !frc2.isTransformed()) { | |
| return true; | |
| } | |
| /* That's the end of the cheap tests, need to get and compare | |
| * the transform matrices. We don't care about the translation | |
| * components, so return true if they are otherwise identical. | |
| */ | |
| double[] mat1 = new double[4]; | |
| double[] mat2 = new double[4]; | |
| frc1.getTransform().getMatrix(mat1); | |
| frc2.getTransform().getMatrix(mat2); | |
| return | |
| mat1[0] == mat2[0] && | |
| mat1[1] == mat2[1] && | |
| mat1[2] == mat2[2] && | |
| mat1[3] == mat2[3]; | |
| } | |
| /* | |
| * Tries it best to get Graphics2D out of the given Graphics | |
| * returns null if can not derive it. | |
| */ | |
| public static Graphics2D getGraphics2D(Graphics g) { | |
| if (g instanceof Graphics2D) { | |
| return (Graphics2D) g; | |
| } else if (g instanceof ProxyPrintGraphics) { | |
| return (Graphics2D)(((ProxyPrintGraphics)g).getGraphics()); | |
| } else { | |
| return null; | |
| } | |
| } | |
| /* | |
| * Returns FontRenderContext associated with Component. | |
| * FontRenderContext from Component.getFontMetrics is associated | |
| * with the component. | |
| * | |
| * Uses Component.getFontMetrics to get the FontRenderContext from. | |
| * see JComponent.getFontMetrics and TextLayoutStrategy.java | |
| */ | |
| public static FontRenderContext getFontRenderContext(Component c) { | |
| assert c != null; | |
| if (c == null) { | |
| return DEFAULT_FRC; | |
| } else { | |
| return c.getFontMetrics(c.getFont()).getFontRenderContext(); | |
| } | |
| } | |
| /** | |
| * A convenience method to get FontRenderContext. | |
| * Returns the FontRenderContext for the passed in FontMetrics or | |
| * for the passed in Component if FontMetrics is null | |
| */ | |
| private static FontRenderContext getFontRenderContext(Component c, FontMetrics fm) { | |
| assert fm != null || c!= null; | |
| return (fm != null) ? fm.getFontRenderContext() | |
| : getFontRenderContext(c); | |
| } | |
| /* | |
| * This method is to be used only for JComponent.getFontMetrics. | |
| * In all other places to get FontMetrics we need to use | |
| * JComponent.getFontMetrics. | |
| * | |
| */ | |
| public static FontMetrics getFontMetrics(JComponent c, Font font) { | |
| FontRenderContext frc = getFRCProperty(c); | |
| if (frc == null) { | |
| frc = DEFAULT_FRC; | |
| } | |
| return FontDesignMetrics.getMetrics(font, frc); | |
| } | |
| /* Get any FontRenderContext associated with a JComponent | |
| * - may return null | |
| */ | |
| private static FontRenderContext getFRCProperty(JComponent c) { | |
| if (c != null) { | |
| GraphicsConfiguration gc = c.getGraphicsConfiguration(); | |
| AffineTransform tx = (gc == null) ? null : gc.getDefaultTransform(); | |
| Object aaHint = c.getClientProperty(KEY_TEXT_ANTIALIASING); | |
| return getFRCFromCache(tx, aaHint); | |
| } | |
| return null; | |
| } | |
| private static final Object APP_CONTEXT_FRC_CACHE_KEY = new Object(); | |
| private static FontRenderContext getFRCFromCache(AffineTransform tx, | |
| Object aaHint) { | |
| if (tx == null && aaHint == null) { | |
| return null; | |
| } | |
| @SuppressWarnings("unchecked") | |
| Map<Object, FontRenderContext> cache = (Map<Object, FontRenderContext>) | |
| AppContext.getAppContext().get(APP_CONTEXT_FRC_CACHE_KEY); | |
| if (cache == null) { | |
| cache = new HashMap<>(); | |
| AppContext.getAppContext().put(APP_CONTEXT_FRC_CACHE_KEY, cache); | |
| } | |
| Object key = (tx == null) | |
| ? aaHint | |
| : (aaHint == null ? tx : new KeyPair(tx, aaHint)); | |
| FontRenderContext frc = cache.get(key); | |
| if (frc == null) { | |
| aaHint = (aaHint == null) ? VALUE_TEXT_ANTIALIAS_OFF : aaHint; | |
| frc = new FontRenderContext(tx, aaHint, | |
| VALUE_FRACTIONALMETRICS_DEFAULT); | |
| cache.put(key, frc); | |
| } | |
| return frc; | |
| } | |
| private static class KeyPair { | |
| private final Object key1; | |
| private final Object key2; | |
| public KeyPair(Object key1, Object key2) { | |
| this.key1 = key1; | |
| this.key2 = key2; | |
| } | |
| @Override | |
| public boolean equals(Object obj) { | |
| if (!(obj instanceof KeyPair)) { | |
| return false; | |
| } | |
| KeyPair that = (KeyPair) obj; | |
| return this.key1.equals(that.key1) && this.key2.equals(that.key2); | |
| } | |
| @Override | |
| public int hashCode() { | |
| return key1.hashCode() + 37 * key2.hashCode(); | |
| } | |
| } | |
| /* | |
| * returns true if the Graphics is print Graphics | |
| * false otherwise | |
| */ | |
| static boolean isPrinting(Graphics g) { | |
| return (g instanceof PrinterGraphics || g instanceof PrintGraphics); | |
| } | |
| private static AttributedCharacterIterator getTrimmedTrailingSpacesIterator | |
| (AttributedCharacterIterator iterator) { | |
| int curIdx = iterator.getIndex(); | |
| char c = iterator.last(); | |
| while(c != CharacterIterator.DONE && Character.isWhitespace(c)) { | |
| c = iterator.previous(); | |
| } | |
| if (c != CharacterIterator.DONE) { | |
| int endIdx = iterator.getIndex(); | |
| if (endIdx == iterator.getEndIndex() - 1) { | |
| iterator.setIndex(curIdx); | |
| return iterator; | |
| } else { | |
| AttributedString trimmedText = new AttributedString(iterator, | |
| iterator.getBeginIndex(), endIdx + 1); | |
| return trimmedText.getIterator(); | |
| } | |
| } else { | |
| return null; | |
| } | |
| } | |
| /** | |
| * Determines whether the SelectedTextColor should be used for painting text | |
| * foreground for the specified highlight. | |
| * | |
| * Returns true only if the highlight painter for the specified highlight | |
| * is the swing painter (whether inner class of javax.swing.text.DefaultHighlighter | |
| * or com.sun.java.swing.plaf.windows.WindowsTextUI) and its background color | |
| * is null or equals to the selection color of the text component. | |
| * | |
| * This is a hack for fixing both bugs 4761990 and 5003294 | |
| */ | |
| public static boolean useSelectedTextColor(Highlighter.Highlight h, JTextComponent c) { | |
| Highlighter.HighlightPainter painter = h.getPainter(); | |
| String painterClass = painter.getClass().getName(); | |
| if (painterClass.indexOf("javax.swing.text.DefaultHighlighter") != 0 && | |
| painterClass.indexOf("com.sun.java.swing.plaf.windows.WindowsTextUI") != 0) { | |
| return false; | |
| } | |
| try { | |
| DefaultHighlighter.DefaultHighlightPainter defPainter = | |
| (DefaultHighlighter.DefaultHighlightPainter) painter; | |
| if (defPainter.getColor() != null && | |
| !defPainter.getColor().equals(c.getSelectionColor())) { | |
| return false; | |
| } | |
| } catch (ClassCastException e) { | |
| return false; | |
| } | |
| return true; | |
| } | |
| /** | |
| * LSBCacheEntry is used to cache the left side bearing (lsb) for | |
| * a particular {@code Font} and {@code FontRenderContext}. | |
| * This only caches characters that fall in the range | |
| * {@code MIN_CHAR_INDEX} to {@code MAX_CHAR_INDEX}. | |
| */ | |
| private static class LSBCacheEntry { | |
| // Used to indicate a particular entry in lsb has not been set. | |
| private static final byte UNSET = Byte.MAX_VALUE; | |
| // Used in creating a GlyphVector to get the lsb | |
| private static final char[] oneChar = new char[1]; | |
| private byte[] lsbCache; | |
| private Font font; | |
| private FontRenderContext frc; | |
| public LSBCacheEntry(FontRenderContext frc, Font font) { | |
| lsbCache = new byte[MAX_CHAR_INDEX - MIN_CHAR_INDEX]; | |
| reset(frc, font); | |
| } | |
| public void reset(FontRenderContext frc, Font font) { | |
| this.font = font; | |
| this.frc = frc; | |
| for (int counter = lsbCache.length - 1; counter >= 0; counter--) { | |
| lsbCache[counter] = UNSET; | |
| } | |
| } | |
| public int getLeftSideBearing(char aChar) { | |
| int index = aChar - MIN_CHAR_INDEX; | |
| assert (index >= 0 && index < (MAX_CHAR_INDEX - MIN_CHAR_INDEX)); | |
| byte lsb = lsbCache[index]; | |
| if (lsb == UNSET) { | |
| oneChar[0] = aChar; | |
| GlyphVector gv = font.createGlyphVector(frc, oneChar); | |
| lsb = (byte) gv.getGlyphPixelBounds(0, frc, 0f, 0f).x; | |
| if (lsb < 0) { | |
| /* HRGB/HBGR LCD glyph images will always have a pixel | |
| * on the left used in colour fringe reduction. | |
| * Text rendering positions this correctly but here | |
| * we are using the glyph image to adjust that position | |
| * so must account for it. | |
| */ | |
| Object aaHint = frc.getAntiAliasingHint(); | |
| if (aaHint == VALUE_TEXT_ANTIALIAS_LCD_HRGB || | |
| aaHint == VALUE_TEXT_ANTIALIAS_LCD_HBGR) { | |
| lsb++; | |
| } | |
| } | |
| lsbCache[index] = lsb; | |
| } | |
| return lsb; | |
| } | |
| public boolean equals(Object entry) { | |
| if (entry == this) { | |
| return true; | |
| } | |
| if (!(entry instanceof LSBCacheEntry)) { | |
| return false; | |
| } | |
| LSBCacheEntry oEntry = (LSBCacheEntry) entry; | |
| return (font.equals(oEntry.font) && | |
| frc.equals(oEntry.frc)); | |
| } | |
| public int hashCode() { | |
| int result = 17; | |
| if (font != null) { | |
| result = 37 * result + font.hashCode(); | |
| } | |
| if (frc != null) { | |
| result = 37 * result + frc.hashCode(); | |
| } | |
| return result; | |
| } | |
| } | |
| /** | |
| * checks if the system clipboard can be accessed. | |
| * This is true in a headful environment, false in a headless one | |
| * | |
| */ | |
| public static boolean canAccessSystemClipboard() { | |
| return !GraphicsEnvironment.isHeadless(); | |
| } | |
| public static String displayPropertiesToCSS(Font font, Color fg) { | |
| StringBuilder rule = new StringBuilder("body {"); | |
| if (font != null) { | |
| rule.append(" font-family: "); | |
| rule.append(font.getFamily()); | |
| rule.append(" ; "); | |
| rule.append(" font-size: "); | |
| rule.append(font.getSize()); | |
| rule.append("pt ;"); | |
| if (font.isBold()) { | |
| rule.append(" font-weight: 700 ; "); | |
| } | |
| if (font.isItalic()) { | |
| rule.append(" font-style: italic ; "); | |
| } | |
| } | |
| if (fg != null) { | |
| rule.append(" color: #"); | |
| if (fg.getRed() < 16) { | |
| rule.append('0'); | |
| } | |
| rule.append(Integer.toHexString(fg.getRed())); | |
| if (fg.getGreen() < 16) { | |
| rule.append('0'); | |
| } | |
| rule.append(Integer.toHexString(fg.getGreen())); | |
| if (fg.getBlue() < 16) { | |
| rule.append('0'); | |
| } | |
| rule.append(Integer.toHexString(fg.getBlue())); | |
| rule.append(" ; "); | |
| } | |
| rule.append(" }"); | |
| return rule.toString(); | |
| } | |
| /** | |
| * Utility method that creates a {@code UIDefaults.LazyValue} that | |
| * creates an {@code ImageIcon} {@code UIResource} for the | |
| * specified image file name. The image is loaded using | |
| * {@code getResourceAsStream}, starting with a call to that method | |
| * on the base class parameter. If it cannot be found, searching will | |
| * continue through the base class' inheritance hierarchy, up to and | |
| * including {@code rootClass}. | |
| * | |
| * @param baseClass the first class to use in searching for the resource | |
| * @param rootClass an ancestor of {@code baseClass} to finish the | |
| * search at | |
| * @param imageFile the name of the file to be found | |
| * @return a lazy value that creates the {@code ImageIcon} | |
| * {@code UIResource} for the image, | |
| * or null if it cannot be found | |
| */ | |
| public static Object makeIcon(final Class<?> baseClass, | |
| final Class<?> rootClass, | |
| final String imageFile) { | |
| return (UIDefaults.LazyValue) (table) -> { | |
| byte[] buffer = getIconBytes(baseClass, rootClass, imageFile); | |
| if (buffer == null) { | |
| return null; | |
| } | |
| if (buffer.length == 0) { | |
| System.err.println("warning: " + imageFile | |
| + " is zero-length"); | |
| return null; | |
| } | |
| return new ImageIconUIResource(buffer); | |
| }; | |
| } | |
| private static byte[] getIconBytes(final Class<?> baseClass, | |
| final Class<?> rootClass, | |
| final String imageFile) { | |
| /* Copy resource into a byte array. This is | |
| * necessary because several browsers consider | |
| * Class.getResource a security risk because it | |
| * can be used to load additional classes. | |
| * Class.getResourceAsStream just returns raw | |
| * bytes, which we can convert to an image. | |
| */ | |
| Class<?> srchClass = baseClass; | |
| while (srchClass != null) { | |
| try (InputStream resource = | |
| srchClass.getResourceAsStream(imageFile)) { | |
| if (resource == null) { | |
| if (srchClass == rootClass) { | |
| break; | |
| } | |
| srchClass = srchClass.getSuperclass(); | |
| continue; | |
| } | |
| try (BufferedInputStream in = new BufferedInputStream(resource)) { | |
| return in.readAllBytes(); | |
| } | |
| } catch (IOException ioe) { | |
| System.err.println(ioe.toString()); | |
| } | |
| } | |
| return null; | |
| } | |
| /* Used to help decide if AA text rendering should be used, so | |
| * this local display test should be additionally qualified | |
| * against whether we have XRender support on both ends of the wire, | |
| * as with that support remote performance may be good enough to turn | |
| * on by default. An additional complication there is XRender does not | |
| * appear capable of performing gamma correction needed for LCD text. | |
| */ | |
| public static boolean isLocalDisplay() { | |
| boolean isLocal; | |
| GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); | |
| if (ge instanceof SunGraphicsEnvironment) { | |
| isLocal = ((SunGraphicsEnvironment) ge).isDisplayLocal(); | |
| } else { | |
| isLocal = true; | |
| } | |
| return isLocal; | |
| } | |
| /** | |
| * Returns an integer from the defaults table. If {@code key} does | |
| * not map to a valid {@code Integer}, or cannot be converted from | |
| * a {@code String} to an integer, the value 0 is returned. | |
| * | |
| * @param key an {@code Object} specifying the int. | |
| * @return the int | |
| */ | |
| public static int getUIDefaultsInt(Object key) { | |
| return getUIDefaultsInt(key, 0); | |
| } | |
| /** | |
| * Returns an integer from the defaults table that is appropriate | |
| * for the given locale. If {@code key} does not map to a valid | |
| * {@code Integer}, or cannot be converted from a {@code String} | |
| * to an integer, the value 0 is returned. | |
| * | |
| * @param key an {@code Object} specifying the int. Returned value | |
| * is 0 if {@code key} is not available, | |
| * @param l the {@code Locale} for which the int is desired | |
| * @return the int | |
| */ | |
| public static int getUIDefaultsInt(Object key, Locale l) { | |
| return getUIDefaultsInt(key, l, 0); | |
| } | |
| /** | |
| * Returns an integer from the defaults table. If {@code key} does | |
| * not map to a valid {@code Integer}, or can not be converted from | |
| * a {@code String} to an integer, {@code default} is | |
| * returned. | |
| * | |
| * @param key an {@code Object} specifying the int. Returned value | |
| * is 0 if {@code key} is not available, | |
| * @param defaultValue Returned value if {@code key} is not available, | |
| * or is not an Integer | |
| * @return the int | |
| */ | |
| public static int getUIDefaultsInt(Object key, int defaultValue) { | |
| return getUIDefaultsInt(key, null, defaultValue); | |
| } | |
| /** | |
| * Returns an integer from the defaults table that is appropriate | |
| * for the given locale. If {@code key} does not map to a valid | |
| * {@code Integer}, or can not be converted from a {@code String} | |
| * to an integer, {@code default} is returned. | |
| * | |
| * @param key an {@code Object} specifying the int. Returned value | |
| * is 0 if {@code key} is not available, | |
| * @param l the {@code Locale} for which the int is desired | |
| * @param defaultValue Returned value if {@code key} is not available, | |
| * or is not an Integer | |
| * @return the int | |
| */ | |
| public static int getUIDefaultsInt(Object key, Locale l, int defaultValue) { | |
| Object value = UIManager.get(key, l); | |
| if (value instanceof Integer) { | |
| return ((Integer)value).intValue(); | |
| } | |
| if (value instanceof String) { | |
| try { | |
| return Integer.parseInt((String)value); | |
| } catch (NumberFormatException nfe) {} | |
| } | |
| return defaultValue; | |
| } | |
| // At this point we need this method here. But we assume that there | |
| // will be a common method for this purpose in the future releases. | |
| public static Component compositeRequestFocus(Component component) { | |
| if (component instanceof Container) { | |
| Container container = (Container)component; | |
| if (container.isFocusCycleRoot()) { | |
| FocusTraversalPolicy policy = container.getFocusTraversalPolicy(); | |
| Component comp = policy.getDefaultComponent(container); | |
| if (comp!=null) { | |
| comp.requestFocus(); | |
| return comp; | |
| } | |
| } | |
| Container rootAncestor = container.getFocusCycleRootAncestor(); | |
| if (rootAncestor!=null) { | |
| FocusTraversalPolicy policy = rootAncestor.getFocusTraversalPolicy(); | |
| Component comp = policy.getComponentAfter(rootAncestor, container); | |
| if (comp!=null && SwingUtilities.isDescendingFrom(comp, container)) { | |
| comp.requestFocus(); | |
| return comp; | |
| } | |
| } | |
| } | |
| if (component.isFocusable()) { | |
| component.requestFocus(); | |
| return component; | |
| } | |
| return null; | |
| } | |
| /** | |
| * Change focus to the visible component in {@code JTabbedPane}. | |
| * This is not a general-purpose method and is here only to permit | |
| * sharing code. | |
| */ | |
| @SuppressWarnings("deprecation") | |
| public static boolean tabbedPaneChangeFocusTo(Component comp) { | |
| if (comp != null) { | |
| if (comp.isFocusTraversable()) { | |
| SwingUtilities2.compositeRequestFocus(comp); | |
| return true; | |
| } else if (comp instanceof JComponent | |
| && ((JComponent)comp).requestDefaultFocus()) { | |
| return true; | |
| } | |
| } | |
| return false; | |
| } | |
| /** | |
| * Submits a value-returning task for execution on the EDT and | |
| * returns a Future representing the pending results of the task. | |
| * | |
| * @param task the task to submit | |
| * @return a Future representing pending completion of the task | |
| * @throws NullPointerException if the task is null | |
| */ | |
| public static <V> Future<V> submit(Callable<V> task) { | |
| if (task == null) { | |
| throw new NullPointerException(); | |
| } | |
| FutureTask<V> future = new FutureTask<V>(task); | |
| execute(future); | |
| return future; | |
| } | |
| /** | |
| * Submits a Runnable task for execution on the EDT and returns a | |
| * Future representing that task. | |
| * | |
| * @param task the task to submit | |
| * @param result the result to return upon successful completion | |
| * @return a Future representing pending completion of the task, | |
| * and whose {@code get()} method will return the given | |
| * result value upon completion | |
| * @throws NullPointerException if the task is null | |
| */ | |
| public static <V> Future<V> submit(Runnable task, V result) { | |
| if (task == null) { | |
| throw new NullPointerException(); | |
| } | |
| FutureTask<V> future = new FutureTask<V>(task, result); | |
| execute(future); | |
| return future; | |
| } | |
| /** | |
| * Sends a Runnable to the EDT for the execution. | |
| */ | |
| private static void execute(Runnable command) { | |
| SwingUtilities.invokeLater(command); | |
| } | |
| /** | |
| * Sets the {@code SKIP_CLICK_COUNT} client property on the component | |
| * if it is an instance of {@code JTextComponent} with a | |
| * {@code DefaultCaret}. This property, used for text components acting | |
| * as editors in a table or tree, tells {@code DefaultCaret} how many | |
| * clicks to skip before starting selection. | |
| */ | |
| public static void setSkipClickCount(Component comp, int count) { | |
| if (comp instanceof JTextComponent | |
| && ((JTextComponent) comp).getCaret() instanceof DefaultCaret) { | |
| ((JTextComponent) comp).putClientProperty(SKIP_CLICK_COUNT, count); | |
| } | |
| } | |
| /** | |
| * Return the MouseEvent's click count, possibly reduced by the value of | |
| * the component's {@code SKIP_CLICK_COUNT} client property. Clears | |
| * the {@code SKIP_CLICK_COUNT} property if the mouse event's click count | |
| * is 1. In order for clearing of the property to work correctly, there | |
| * must be a mousePressed implementation on the caller with this | |
| * call as the first line. | |
| */ | |
| public static int getAdjustedClickCount(JTextComponent comp, MouseEvent e) { | |
| int cc = e.getClickCount(); | |
| if (cc == 1) { | |
| comp.putClientProperty(SKIP_CLICK_COUNT, null); | |
| } else { | |
| Integer sub = (Integer) comp.getClientProperty(SKIP_CLICK_COUNT); | |
| if (sub != null) { | |
| return cc - sub; | |
| } | |
| } | |
| return cc; | |
| } | |
| /** | |
| * Used by the {@code liesIn} method to return which section | |
| * the point lies in. | |
| * | |
| * @see #liesIn | |
| */ | |
| public enum Section { | |
| /** The leading section */ | |
| LEADING, | |
| /** The middle section */ | |
| MIDDLE, | |
| /** The trailing section */ | |
| TRAILING | |
| } | |
| /** | |
| * This method divides a rectangle into two or three sections along | |
| * the specified axis and determines which section the given point | |
| * lies in on that axis; used by drag and drop when calculating drop | |
| * locations. | |
| * <p> | |
| * For two sections, the rectangle is divided equally and the method | |
| * returns whether the point lies in {@code Section.LEADING} or | |
| * {@code Section.TRAILING}. For horizontal divisions, the calculation | |
| * respects component orientation. | |
| * <p> | |
| * For three sections, if the rectangle is greater than or equal to | |
| * 30 pixels in length along the axis, the calculation gives 10 pixels | |
| * to each of the leading and trailing sections and the remainder to the | |
| * middle. For smaller sizes, the rectangle is divided equally into three | |
| * sections. | |
| * <p> | |
| * Note: This method assumes that the point is within the bounds of | |
| * the given rectangle on the specified axis. However, in cases where | |
| * it isn't, the results still have meaning: {@code Section.MIDDLE} | |
| * remains the same, {@code Section.LEADING} indicates that the point | |
| * is in or somewhere before the leading section, and | |
| * {@code Section.TRAILING} indicates that the point is in or somewhere | |
| * after the trailing section. | |
| * | |
| * @param rect the rectangle | |
| * @param p the point the check | |
| * @param horizontal {@code true} to use the horizontal axis, | |
| * or {@code false} for the vertical axis | |
| * @param ltr {@code true} for left to right orientation, | |
| * or {@code false} for right to left orientation; | |
| * only used for horizontal calculations | |
| * @param three {@code true} for three sections, | |
| * or {@code false} for two | |
| * | |
| * @return the {@code Section} where the point lies | |
| * | |
| * @throws NullPointerException if {@code rect} or {@code p} are | |
| * {@code null} | |
| */ | |
| private static Section liesIn(Rectangle rect, Point p, boolean horizontal, | |
| boolean ltr, boolean three) { | |
| /* beginning of the rectangle on the axis */ | |
| int p0; | |
| /* point on the axis we're interested in */ | |
| int pComp; | |
| /* length of the rectangle on the axis */ | |
| int length; | |
| /* value of ltr if horizontal, else true */ | |
| boolean forward; | |
| if (horizontal) { | |
| p0 = rect.x; | |
| pComp = p.x; | |
| length = rect.width; | |
| forward = ltr; | |
| } else { | |
| p0 = rect.y; | |
| pComp = p.y; | |
| length = rect.height; | |
| forward = true; | |
| } | |
| if (three) { | |
| int boundary = (length >= 30) ? 10 : length / 3; | |
| if (pComp < p0 + boundary) { | |
| return forward ? Section.LEADING : Section.TRAILING; | |
| } else if (pComp >= p0 + length - boundary) { | |
| return forward ? Section.TRAILING : Section.LEADING; | |
| } | |
| return Section.MIDDLE; | |
| } else { | |
| int middle = p0 + length / 2; | |
| if (forward) { | |
| return pComp >= middle ? Section.TRAILING : Section.LEADING; | |
| } else { | |
| return pComp < middle ? Section.TRAILING : Section.LEADING; | |
| } | |
| } | |
| } | |
| /** | |
| * This method divides a rectangle into two or three sections along | |
| * the horizontal axis and determines which section the given point | |
| * lies in; used by drag and drop when calculating drop locations. | |
| * <p> | |
| * See the documentation for {@link #liesIn} for more information | |
| * on how the section is calculated. | |
| * | |
| * @param rect the rectangle | |
| * @param p the point the check | |
| * @param ltr {@code true} for left to right orientation, | |
| * or {@code false} for right to left orientation | |
| * @param three {@code true} for three sections, | |
| * or {@code false} for two | |
| * | |
| * @return the {@code Section} where the point lies | |
| * | |
| * @throws NullPointerException if {@code rect} or {@code p} are | |
| * {@code null} | |
| */ | |
| public static Section liesInHorizontal(Rectangle rect, Point p, | |
| boolean ltr, boolean three) { | |
| return liesIn(rect, p, true, ltr, three); | |
| } | |
| /** | |
| * This method divides a rectangle into two or three sections along | |
| * the vertical axis and determines which section the given point | |
| * lies in; used by drag and drop when calculating drop locations. | |
| * <p> | |
| * See the documentation for {@link #liesIn} for more information | |
| * on how the section is calculated. | |
| * | |
| * @param rect the rectangle | |
| * @param p the point the check | |
| * @param three {@code true} for three sections, | |
| * or {@code false} for two | |
| * | |
| * @return the {@code Section} where the point lies | |
| * | |
| * @throws NullPointerException if {@code rect} or {@code p} are | |
| * {@code null} | |
| */ | |
| public static Section liesInVertical(Rectangle rect, Point p, | |
| boolean three) { | |
| return liesIn(rect, p, false, false, three); | |
| } | |
| /** | |
| * Maps the index of the column in the view at | |
| * {@code viewColumnIndex} to the index of the column | |
| * in the table model. Returns the index of the corresponding | |
| * column in the model. If {@code viewColumnIndex} | |
| * is less than zero, returns {@code viewColumnIndex}. | |
| * | |
| * @param cm the table model | |
| * @param viewColumnIndex the index of the column in the view | |
| * @return the index of the corresponding column in the model | |
| * | |
| * @see JTable#convertColumnIndexToModel(int) | |
| * @see javax.swing.plaf.basic.BasicTableHeaderUI | |
| */ | |
| public static int convertColumnIndexToModel(TableColumnModel cm, | |
| int viewColumnIndex) { | |
| if (viewColumnIndex < 0) { | |
| return viewColumnIndex; | |
| } | |
| return cm.getColumn(viewColumnIndex).getModelIndex(); | |
| } | |
| /** | |
| * Maps the index of the column in the {@code cm} at | |
| * {@code modelColumnIndex} to the index of the column | |
| * in the view. Returns the index of the | |
| * corresponding column in the view; returns {@code -1} if this column | |
| * is not being displayed. If {@code modelColumnIndex} is less than zero, | |
| * returns {@code modelColumnIndex}. | |
| * | |
| * @param cm the table model | |
| * @param modelColumnIndex the index of the column in the model | |
| * @return the index of the corresponding column in the view | |
| * | |
| * @see JTable#convertColumnIndexToView(int) | |
| * @see javax.swing.plaf.basic.BasicTableHeaderUI | |
| */ | |
| public static int convertColumnIndexToView(TableColumnModel cm, | |
| int modelColumnIndex) { | |
| if (modelColumnIndex < 0) { | |
| return modelColumnIndex; | |
| } | |
| for (int column = 0; column < cm.getColumnCount(); column++) { | |
| if (cm.getColumn(column).getModelIndex() == modelColumnIndex) { | |
| return column; | |
| } | |
| } | |
| return -1; | |
| } | |
| /** | |
| * Sets the InputEvent.ALT_GRAPH mask on any modifier passed to the function | |
| * @param modifier the modifier passed | |
| * @return the modifier returned with ALT_GRAPH flag set | |
| */ | |
| public static int setAltGraphMask(int modifier) { | |
| return (modifier | InputEvent.ALT_GRAPH_DOWN_MASK); | |
| } | |
| @SuppressWarnings("deprecation") | |
| public static int getSystemMnemonicKeyMask() { | |
| Toolkit toolkit = Toolkit.getDefaultToolkit(); | |
| if (toolkit instanceof SunToolkit) { | |
| return ((SunToolkit) toolkit).getFocusAcceleratorKeyMask(); | |
| } | |
| return InputEvent.ALT_MASK; | |
| } | |
| /** | |
| * Returns the {@link TreePath} that identifies the changed nodes. | |
| * | |
| * @param event changes in a tree model | |
| * @param model corresponding tree model | |
| * @return the path to the changed nodes | |
| */ | |
| public static TreePath getTreePath(TreeModelEvent event, TreeModel model) { | |
| TreePath path = event.getTreePath(); | |
| if ((path == null) && (model != null)) { | |
| Object root = model.getRoot(); | |
| if (root != null) { | |
| path = new TreePath(root); | |
| } | |
| } | |
| return path; | |
| } | |
| public static boolean isScaledGraphics(Graphics g) { | |
| if (g instanceof Graphics2D) { | |
| AffineTransform tx = ((Graphics2D) g).getTransform(); | |
| return (tx.getType() & ~(TYPE_TRANSLATION | TYPE_FLIP)) != 0; | |
| } | |
| return false; | |
| } | |
| /** | |
| * Enables the antialiasing rendering hint for the scaled graphics and | |
| * returns the previous hint value. | |
| * The returned null value indicates that the passed graphics is not | |
| * instance of Graphics2D. | |
| * | |
| * @param g the graphics | |
| * @return the previous antialiasing rendering hint value if the passed | |
| * graphics is instance of Graphics2D, null otherwise. | |
| */ | |
| public static Object getAndSetAntialisingHintForScaledGraphics(Graphics g) { | |
| if (isScaledGraphics(g) && isLocalDisplay()) { | |
| Graphics2D g2d = (Graphics2D) g; | |
| Object hint = g2d.getRenderingHint(RenderingHints.KEY_ANTIALIASING); | |
| g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, | |
| RenderingHints.VALUE_ANTIALIAS_ON); | |
| return hint; | |
| } | |
| return null; | |
| } | |
| /** | |
| * Sets the antialiasing rendering hint if its value is not null. | |
| * Null hint value indicates that the passed graphics is not instance of | |
| * Graphics2D. | |
| * | |
| * @param g the graphics | |
| * @param hint the antialiasing rendering hint | |
| */ | |
| public static void setAntialiasingHintForScaledGraphics(Graphics g, Object hint) { | |
| if (hint != null) { | |
| ((Graphics2D) g).setRenderingHint(RenderingHints.KEY_ANTIALIASING, hint); | |
| } | |
| } | |
| public static boolean isFloatingPointScale(AffineTransform tx) { | |
| int type = tx.getType() & ~(TYPE_FLIP | TYPE_TRANSLATION); | |
| if (type == 0) { | |
| return false; | |
| } else if ((type & ~TYPE_MASK_SCALE) == 0) { | |
| double scaleX = tx.getScaleX(); | |
| double scaleY = tx.getScaleY(); | |
| return (scaleX != (int) scaleX) || (scaleY != (int) scaleY); | |
| } else { | |
| return false; | |
| } | |
| } | |
| /** | |
| * Returns the client property for the given key if it is set; otherwise | |
| * returns the {@literal L&F} property. | |
| * | |
| * @param component the component | |
| * @param key an {@code String} specifying the key for the desired boolean value | |
| * @return the boolean value of the client property if it is set or the {@literal L&F} | |
| * property in other case. | |
| */ | |
| public static boolean getBoolean(JComponent component, String key) { | |
| Object clientProperty = component.getClientProperty(key); | |
| if (clientProperty instanceof Boolean) { | |
| return Boolean.TRUE.equals(clientProperty); | |
| } | |
| return UIManager.getBoolean(key); | |
| } | |
| /** | |
| * Used to listen to "blit" repaints in RepaintManager. | |
| */ | |
| public interface RepaintListener { | |
| void repaintPerformed(JComponent c, int x, int y, int w, int h); | |
| } | |
| /** | |
| * Returns whether or not the scale used by {@code GraphicsConfiguration} | |
| * was changed. | |
| * | |
| * @param ev a {@code PropertyChangeEvent} | |
| * @return whether or not the scale was changed | |
| * @since 11 | |
| */ | |
| public static boolean isScaleChanged(final PropertyChangeEvent ev) { | |
| return isScaleChanged(ev.getPropertyName(), ev.getOldValue(), | |
| ev.getNewValue()); | |
| } | |
| /** | |
| * Returns whether or not the scale used by {@code GraphicsConfiguration} | |
| * was changed. | |
| * | |
| * @param name the name of the property | |
| * @param oldValue the old value of the property | |
| * @param newValue the new value of the property | |
| * @return whether or not the scale was changed | |
| * @since 11 | |
| */ | |
| public static boolean isScaleChanged(final String name, | |
| final Object oldValue, | |
| final Object newValue) { | |
| if (oldValue == newValue || !"graphicsConfiguration".equals(name)) { | |
| return false; | |
| } | |
| var newGC = (GraphicsConfiguration) oldValue; | |
| var oldGC = (GraphicsConfiguration) newValue; | |
| var newTx = newGC != null ? newGC.getDefaultTransform() : null; | |
| var oldTx = oldGC != null ? oldGC.getDefaultTransform() : null; | |
| return !Objects.equals(newTx, oldTx); | |
| } | |
| } |