字符显示/搜索Unicode字符
在回答关于这些部分的另一个问题时 ，我对可能从系统中可用字体显示的Unicode字符获得的字形感到好奇。
当然，在典型的机器上有65,536个Unicode字符和250多种字体！ 让人想知道从哪里开始。 什么是美妙的应用程序。 这允许我们浏览在列表中选择的.any字体中显示的Unicode代码点表。 如果还有：
- 一个微调器，允许我们跳转到任何感兴趣的代码点。
- 列表中不太模糊的Unicodes的名称，带有文本搜索可编辑组合。
- 有关特定选定Unicode点的详细信息，包括：
- 字符或字形的大显示，所以我们可以注意它。
- 可以显示它的字体列表。
- 代码点的属性。
这样的应用程序。 存在？
它可能看起来很好..像这样的东西！
当然。 给这个跑。
import java.awt.*; import javax.swing.*; import javax.swing.border.EmptyBorder; import javax.swing.event.*; import javax.swing.table.*; import javax.swing.plaf.basic.BasicComboBoxEditor; import javax.swing.text.Document; import java.util.*; import java.util.logging.*; public class UnicodeExplorer { public static final int codePointColumnWidth = 16; public static final int numberUnicodes = 256 * 256; private final ArrayList fontList = new ArrayList(); private final SpinnerNumberModel startPage = new SpinnerNumberModel( 0, 0, numberUnicodes, 1); private Font[] fontArray; private JList fonts = new JList(fontArray); private final FontTableCellRenderer fontTableCellRenderer = new FontTableCellRenderer(); private final JTable codePointTable = new JTable(new CodePointTableModel( numberUnicodes / codePointColumnWidth, codePointColumnWidth)); public static void main(String[] args) { Runnable r = new Runnable() { @Override public void run() { // the GUI as seen by the user (without frame) JPanel gui = new JPanel(new BorderLayout()); gui.setBorder(new EmptyBorder(2, 3, 2, 3)); UnicodeExplorer ue = new UnicodeExplorer(); ue.initGui(gui); JFrame f = new JFrame("UGlys - Unicode Glyphs"); f.add(gui); // Ensures JVM closes after frame(s) closed and // all non-daemon threads are finished f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); // See http://stackoverflow.com/a/7143398/418556 for demo. f.setLocationByPlatform(true); ue.setCharacterSpinner(new Integer(65)); f.pack(); f.setMinimumSize(f.getSize()); // should be done last, to avoid flickering, moving, // resizing artifacts. f.setVisible(true); } }; // Swing GUIs should be created and updated on the EDT // http://docs.oracle.com/javase/tutorial/uiswing/concurrency SwingUtilities.invokeLater(r); } public void handleCodePointTableSelection(ListSelectionEvent e) { if (!e.getValueIsAdjusting()) { int row = codePointTable.getSelectedRow(); int col = codePointTable.getSelectedColumn(); int codePoint = (row * codePointColumnWidth) + col; setCodePointDetailView(codePoint); } } JPanel characterPanel = null; JList supportedFonts = new JList(); JLabel bigCharacter = new JLabel(); JLabel characterDetails = new JLabel(); public void setFontsForThisCodePoint(int codePoint) { DefaultListModel dlm = new DefaultListModel(); for (Font font : fontArray) { if (font.canDisplay(codePoint)) { dlm.addElement(font); } } supportedFonts.setModel(dlm); supportedFonts.setVisibleRowCount(5); } public void setCodePointDetailView(int codePoint) { String s = UnicodeUtil.getCodePointString(codePoint); bigCharacter.setText(s); StringBuilder sb = new StringBuilder(""); sb.append(getTableRow("Character", s)); sb.append(getTableRow("Name", "" + Character.getName(codePoint))); sb.append(getTableRow("Code Point", "" + codePoint)); sb.append(getTableRow( "Is Defined", "" + Character.isDefined(codePoint))); sb.append(getTableRow( "Is BMP", "" + Character.isBmpCodePoint(codePoint))); sb.append(getTableRow( "Is ISO Control", "" + Character.isISOControl(codePoint))); sb.append(getTableRow( "Is Mirrored", "" + Character.isMirrored(codePoint))); sb.append(getTableRow( "Is Digit", "" + Character.isDigit(codePoint))); sb.append(getTableRow( "Is Letter", "" + Character.isLetter(codePoint))); sb.append(getTableRow( "Is Alphabetic", "" + Character.isAlphabetic(codePoint))); sb.append(getTableRow( "Is Ideographic", "" + Character.isIdeographic(codePoint))); sb.append(getTableRow( "Is Space Character", "" + Character.isSpaceChar(codePoint))); sb.append(getTableRow( "Is White Space", "" + Character.isWhitespace(codePoint))); sb.append(getTableRow( "Is Lower Case", "" + Character.isLowerCase(codePoint))); sb.append(getTableRow( "Is Title Case", "" + Character.isTitleCase(codePoint))); sb.append(getTableRow( "Is Upper Case", "" + Character.isUpperCase(codePoint))); sb.append("
"); characterDetails.setText(sb.toString()); setFontsForThisCodePoint(codePoint); } public String getTableRow(String key, String value) { return "" + key + " " + value + " namedCodePoints = new ArrayList (); final FilteredCodePointListModel namedCodePointListModel = new FilteredCodePointListModel(); ListCellRenderer namedCodePointListeCellRenderer = new CodePointListCellRenderer(); String s; for (int ii = 0; ii < numberUnicodes; ii++) { s = Character.getName(ii); if (s != null) { s = s.trim().toLowerCase(); if (!s.startsWith("null") && !s.contains("private") && !s.contains("cjk") && !s.contains("surrogate")) { namedCodePoints.add(ii); namedCodePointListModel.addElement(new Integer(ii)); } } } final JList namedCodePointList = new JList (namedCodePointListModel); ListSelectionListener namedCodePointListSelectionListener = new ListSelectionListener() { @Override public void valueChanged(ListSelectionEvent e) { if (!e.getValueIsAdjusting()) { Integer i = namedCodePointList.getSelectedValue(); startPage.setValue(i); } } }; namedCodePointList.addListSelectionListener( namedCodePointListSelectionListener); namedCodePointList.setCellRenderer(namedCodePointListeCellRenderer); namedCodePointList.setVisibleRowCount(8); namedCodePointListModel.setFilter(""); HashMap namePartMap = new HashMap(); for (int ii = 0; ii < namedCodePoints.size(); ii++) { String name = Character.getName(namedCodePoints.get(ii)); String[] parts = name.split(" "); for (String part : parts) { if (namePartMap.containsKey(part)) { Integer num = namePartMap.get(part); namePartMap.put(part, num.intValue() + 1); } else { namePartMap.put(part, 1); } } } int namePartMapSize = namePartMap.size(); class PartNumber implements Comparable { public String part; public int number; PartNumber(String part, int number) { this.part = part; this.number = number; } @Override public int compareTo(Object o) { PartNumber partNumber2 = (PartNumber) o; if (number == partNumber2.number) { return part.compareTo(partNumber2.part); } else { return number - partNumber2.number; } } @Override public String toString() { return "Part: " + part + " \tnumber: " + number; } } ArrayList partNumbers = new ArrayList (); Set keySet = namePartMap.keySet(); Iterator it = keySet.iterator(); while (it.hasNext()) { String key = (String) it.next(); int number = (Integer) namePartMap.get(key); if (key.length() > 4 && number > 7) { partNumbers.add(new PartNumber(key, number)); } } Collections.sort(partNumbers); partNumbers.add(new PartNumber("", 0)); String[] names = new String[partNumbers.size()]; for (int jj = 0; jj < names.length; jj++) { names[jj] = partNumbers.get(jj).part; } Collections.sort(Arrays.asList(names)); JComboBox codePointNameFilterCombo = new JComboBox (names); codePointNameFilterCombo.setEditable(true); ComboBoxEditor cbe = new BasicComboBoxEditor(); final JTextField tf = (JTextField) cbe.getEditorComponent(); Document doc = tf.getDocument(); DocumentListener dl = new DocumentListener() { @Override public void insertUpdate(DocumentEvent e) { namedCodePointListModel.setFilter(tf.getText()); refreshList(); } @Override public void removeUpdate(DocumentEvent e) { namedCodePointListModel.setFilter(tf.getText()); refreshList(); } @Override public void changedUpdate(DocumentEvent e) { namedCodePointListModel.setFilter(tf.getText()); refreshList(); } private void refreshList() { namedCodePointList.repaint(); namedCodePointList.scrollRectToVisible( namedCodePointList.getCellBounds(0, 0)); } }; doc.addDocumentListener(dl); codePointNameFilterCombo.setEditor(cbe); codePointNameFilterCombo.setEditor(cbe); namedCodePointListModel.setFilter(""); //codePointNameFilterCombo JPanel namedCodePointPanel = new JPanel(new BorderLayout(3, 3)); namedCodePointPanel.add( codePointNameFilterCombo, BorderLayout.PAGE_START); Dimension sizeOfNamedCodePointList = namedCodePointList.getPreferredSize(); Dimension thinnerSizeOfNamedCodePointList = new Dimension( sizeOfNamedCodePointList.width / 4, sizeOfNamedCodePointList.height); namedCodePointList.setPreferredSize(thinnerSizeOfNamedCodePointList); namedCodePointPanel.add( new JScrollPane(namedCodePointList), BorderLayout.CENTER); JSplitPane codePointTableNameSplit = new JSplitPane( JSplitPane.HORIZONTAL_SPLIT, codePointTableScroll, namedCodePointPanel); codePointTableNameSplit.setResizeWeight(1d); codePointTableComponent.add(codePointTableNameSplit, BorderLayout.CENTER); JSplitPane split = new JSplitPane( JSplitPane.HORIZONTAL_SPLIT, fontScroll, codePointTableComponent); selectFont(new Font(Font.SANS_SERIF, Font.PLAIN, 1)); JSplitPane splitTopBottom = new JSplitPane( JSplitPane.VERTICAL_SPLIT, split, getCharacterPanel()); c.add(splitTopBottom, BorderLayout.CENTER); } public void setCharacterSpinner(Integer i) { // page.setValue(i); startPage.setValue(new Integer(65)); } public void selectCodePoint(int codePoint) { Logger.getLogger(UnicodeExplorer.class.getName()).log( Level.INFO, "code point " + codePoint); ListSelectionModel lsm = codePointTable.getSelectionModel(); int row = codePoint / codePointColumnWidth; lsm.setSelectionInterval(row, row); int col = codePoint % codePointColumnWidth; codePointTable.setColumnSelectionInterval(col, col); codePointTable.scrollRectToVisible( codePointTable.getCellRect(row, col, false)); } public void selectFont(Font font) { int indexDefault = fontList.indexOf(font); fonts.setSelectedIndex(indexDefault); Rectangle rect = fonts.getCellBounds(indexDefault, indexDefault); if (rect != null) { fonts.scrollRectToVisible(rect.getBounds()); } } } class FontCellRenderer extends DefaultListCellRenderer { float fontSize = 24; JLabel label; public Component getListCellRendererComponent( JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { Font fontOrig = (Font) value; Font temp = fontOrig; String pre = ""; String suf = ""; int displayIndex = temp.canDisplayUpTo(temp.getFamily()); if (displayIndex > -1) { temp = new Font(Font.MONOSPACED, Font.PLAIN, temp.getSize()); pre = "("; suf = ")"; } label = (JLabel) super.getListCellRendererComponent( list, pre + fontOrig.getFamily() + suf, index, isSelected, cellHasFocus); label.setToolTipText(fontOrig.toString()); label.setFont(temp.deriveFont(fontSize)); return label; } } class FontTableCellRenderer extends DefaultTableCellRenderer { private Font displayFont; @Override public Component getTableCellRendererComponent( JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { Component c = super.getTableCellRendererComponent( table, value, isSelected, hasFocus, row, column); if (c instanceof JLabel) { JLabel l = (JLabel) c; int codePoint = ((Integer) value).intValue(); boolean isDefined = Character.isDefined(codePoint); boolean canDisplay = displayFont.canDisplay(codePoint); String s = UnicodeUtil.getCodePointString(codePoint); l.setText(s); if (displayFont != null) { l.setFont(displayFont.deriveFont( (float) (displayFont.getSize() * .8))); String tip = "&#" + codePoint + " " + Character.getName(codePoint); l.setToolTipText(tip); l.setForeground(Color.BLACK); if (!canDisplay) { l.setForeground(Color.RED); } if (!isDefined) { l.setForeground(Color.BLUE); } } } else { Logger.getLogger( UnicodeExplorer.class.getName(), "We are not getting a JLabel as expected!"); } return c; } public void setDisplayFont(Font font) { displayFont = font; } } class UnicodeUtil { public static String getCodePointString(int codePoint) { return new String(Character.toChars(codePoint)); } } class CodePointTableModel extends DefaultTableModel { public static final String[] COLUMN_NAMES = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" }; public CodePointTableModel(int rows, int cols) { super(rows, cols); } @Override public String getColumnName(int column) { return COLUMN_NAMES[column]; } @Override public Object getValueAt(int row, int col) { return (row * getColumnCount()) + col; } } class CodePointListCellRenderer extends DefaultListCellRenderer { @Override public Component getListCellRendererComponent( JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { JLabel l = (JLabel) super.getListCellRendererComponent( list, value, index, isSelected, cellHasFocus); Integer i = (Integer) value; String s = new String( Character.toChars(i)) + " - " + Character.getName(i.intValue()); l.setText(s); return l; } } class FilteredCodePointListModel extends DefaultListModel { public String filter = ""; public Object[] filteredElements = new Object[0]; public void setFilter(String filter) { this.filter = filter; filterList(); } @SuppressWarnings("unchecked") private void filterList() { Object[] allElements = super.toArray(); if (filter.trim().length() == 0) { // use entire list. filteredElements = allElements; } else { // filter the list ArrayList