List of usage examples for javax.swing.text JTextComponent getFontMetrics
public FontMetrics getFontMetrics(Font font)
FontMetrics for the specified Font. From source file:Main.java
/** * Returns the {@link Dimension} for the given {@link JTextComponent} * subclass that will show the whole word wrapped text in the given width. * It won't work for styled text of varied size or style, it's assumed that * the whole text is rendered with the {@link JTextComponent}s font. * * @param textComponent the {@link JTextComponent} to calculate the {@link Dimension} for * @param width the width of the resulting {@link Dimension} * @param text the {@link String} which should be word wrapped * @return The calculated {@link Dimension} *///from w w w . ja va2s . c o m public static Dimension getWordWrappedTextDimension(JTextComponent textComponent, int width, String text) { if (textComponent == null) { throw new IllegalArgumentException("textComponent cannot be null"); } if (width < 1) { throw new IllegalArgumentException("width must be 1 or greater"); } if (text == null) { text = textComponent.getText(); } if (text.isEmpty()) { return new Dimension(width, 0); } FontMetrics metrics = textComponent.getFontMetrics(textComponent.getFont()); FontRenderContext rendererContext = metrics.getFontRenderContext(); float formatWidth = width - textComponent.getInsets().left - textComponent.getInsets().right; int lines = 0; String[] paragraphs = text.split("\n"); for (String paragraph : paragraphs) { if (paragraph.isEmpty()) { lines++; } else { AttributedString attributedText = new AttributedString(paragraph); attributedText.addAttribute(TextAttribute.FONT, textComponent.getFont()); AttributedCharacterIterator charIterator = attributedText.getIterator(); LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(charIterator, rendererContext); lineMeasurer.setPosition(charIterator.getBeginIndex()); while (lineMeasurer.getPosition() < charIterator.getEndIndex()) { lineMeasurer.nextLayout(formatWidth); lines++; } } } return new Dimension(width, metrics.getHeight() * lines + textComponent.getInsets().top + textComponent.getInsets().bottom); }
From source file:Main.java
@Override public Shape paintLayer(Graphics g, int offs0, int offs1, Shape bounds, JTextComponent c, View view) { g.setColor(color == null ? c.getSelectionColor() : color); Rectangle rect = null;/*from w ww. ja v a 2s. c o m*/ if (offs0 == view.getStartOffset() && offs1 == view.getEndOffset()) { if (bounds instanceof Rectangle) { rect = (Rectangle) bounds; } else { rect = bounds.getBounds(); } } else { try { Shape shape = view.modelToView(offs0, Position.Bias.Forward, offs1, Position.Bias.Backward, bounds); rect = (shape instanceof Rectangle) ? (Rectangle) shape : shape.getBounds(); } catch (BadLocationException e) { return null; } } FontMetrics fm = c.getFontMetrics(c.getFont()); int baseline = rect.y + rect.height - fm.getDescent() + 1; g.drawLine(rect.x, baseline, rect.x + rect.width, baseline); g.drawLine(rect.x, baseline + 1, rect.x + rect.width, baseline + 1); return rect; }
From source file:edu.ku.brc.ui.tmanfe.SpreadSheet.java
/** * //from w w w. j a va 2s .c o m */ protected void buildSpreadsheet() { this.setShowGrid(true); int numRows = model.getRowCount(); scrollPane = new JScrollPane(this, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED); setAutoResizeMode(JTable.AUTO_RESIZE_OFF); final SpreadSheet ss = this; JButton cornerBtn = UIHelper.createIconBtn("Blank", IconManager.IconSize.Std16, "SelectAll", new ActionListener() { public void actionPerformed(ActionEvent ae) { ss.selectAll(); } }); cornerBtn.setEnabled(true); scrollPane.setCorner(ScrollPaneConstants.UPPER_LEFT_CORNER, cornerBtn); // Allows row and collumn selections to exit at the same time setCellSelectionEnabled(true); setRowSelectionAllowed(true); setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); addMouseListener(new MouseAdapter() { /* (non-Javadoc) * @see java.awt.event.MouseAdapter#mousePressed(java.awt.event.MouseEvent) */ @SuppressWarnings("synthetic-access") @Override public void mouseReleased(MouseEvent e) { // XXX For Java 5 Bug prevRowSelInx = getSelectedRow(); prevColSelInx = getSelectedColumn(); if (e.getClickCount() == 2) { int rowIndexStart = getSelectedRow(); int colIndexStart = getSelectedColumn(); ss.editCellAt(rowIndexStart, colIndexStart); if (ss.getEditorComponent() != null && ss.getEditorComponent() instanceof JTextComponent) { ss.getEditorComponent().requestFocus(); final JTextComponent txtComp = (JTextComponent) ss.getEditorComponent(); String txt = txtComp.getText(); FontMetrics fm = txtComp.getFontMetrics(txtComp.getFont()); int x = e.getPoint().x - ss.getEditorComponent().getBounds().x - 1; int prevWidth = 0; for (int i = 0; i < txt.length(); i++) { int width = fm.stringWidth(txt.substring(0, i)); int basePlusHalf = prevWidth + (int) (((width - prevWidth) / 2) + 0.5); //System.out.println(prevWidth + " X[" + x + "] " + width+" ["+txt.substring(0, i)+"] " + i + " " + basePlusHalf); //System.out.println(" X[" + x + "] " + prevWidth + " - "+ basePlusHalf+" - " + width+" ["+txt.substring(0, i)+"] " + i); if (x < width) { // Clearing the selection is needed for Window for some reason final int inx = i + (x <= basePlusHalf ? -1 : 0); SwingUtilities.invokeLater(new Runnable() { @SuppressWarnings("synthetic-access") public void run() { txtComp.setSelectionStart(0); txtComp.setSelectionEnd(0); txtComp.setCaretPosition(inx > 0 ? inx : 0); } }); break; } prevWidth = width; } } } } }); // Create a row-header to display row numbers. // This row-header is made of labels whose Borders, // Foregrounds, Backgrounds, and Fonts must be // the one used for the table column headers. // Also ensure that the row-header labels and the table // rows have the same height. //i have no idea WHY this has to be called. i rearranged //the table and find replace panel, // i started getting an array index out of //bounds on the column header ON MAC ONLY. //tried firing this off, first and it fixed the problem.//meg this.getModel().fireTableStructureChanged(); /* * Create the Row Header Panel */ rowHeaderPanel = new JPanel((LayoutManager) null); if (getColumnModel().getColumnCount() > 0) { TableColumn column = getColumnModel().getColumn(0); TableCellRenderer renderer = getTableHeader().getDefaultRenderer(); if (renderer == null) { renderer = column.getHeaderRenderer(); } Component cellRenderComp = renderer.getTableCellRendererComponent(this, column.getHeaderValue(), false, false, -1, 0); cellFont = cellRenderComp.getFont(); } else { cellFont = (new JLabel()).getFont(); } // Calculate Row Height cellBorder = (Border) UIManager.getDefaults().get("TableHeader.cellBorder"); Insets insets = cellBorder.getBorderInsets(tableHeader); FontMetrics metrics = getFontMetrics(cellFont); rowHeight = insets.bottom + metrics.getHeight() + insets.top; rowLabelWidth = metrics.stringWidth("9999") + insets.right + insets.left; Dimension dim = new Dimension(rowLabelWidth, rowHeight * numRows); rowHeaderPanel.setPreferredSize(dim); // need to call this when no layout manager is used. rhCellMouseAdapter = new RHCellMouseAdapter(this); // Adding the row header labels for (int ii = 0; ii < numRows; ii++) { addRow(ii, ii + 1, false); } JViewport viewPort = new JViewport(); dim.height = rowHeight * numRows; viewPort.setViewSize(dim); viewPort.setView(rowHeaderPanel); scrollPane.setRowHeader(viewPort); // Experimental from the web, but I think it does the trick. addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { if (!ss.isEditing() && !e.isActionKey() && !e.isControlDown() && !e.isMetaDown() && !e.isAltDown() && e.getKeyCode() != KeyEvent.VK_SHIFT && e.getKeyCode() != KeyEvent.VK_TAB && e.getKeyCode() != KeyEvent.VK_ENTER) { log.error("Grabbed the event as input"); int rowIndexStart = getSelectedRow(); int colIndexStart = getSelectedColumn(); if (rowIndexStart == -1 || colIndexStart == -1) return; ss.editCellAt(rowIndexStart, colIndexStart); Component c = ss.getEditorComponent(); if (c instanceof JTextComponent) ((JTextComponent) c).setText(""); } } }); resizeAndRepaint(); // Taken from a JavaWorld Example (But it works) KeyStroke cut = KeyStroke.getKeyStroke(KeyEvent.VK_X, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask(), false); KeyStroke copy = KeyStroke.getKeyStroke(KeyEvent.VK_C, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask(), false); KeyStroke paste = KeyStroke.getKeyStroke(KeyEvent.VK_V, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask(), false); Action ssAction = new AbstractAction() { @Override public void actionPerformed(ActionEvent e) { SpreadSheet.this.actionPerformed(e); } }; getInputMap().put(cut, "Cut"); getActionMap().put("Cut", ssAction); getInputMap().put(copy, "Copy"); getActionMap().put("Copy", ssAction); getInputMap().put(paste, "Paste"); getActionMap().put("Paste", ssAction); ((JMenuItem) UIRegistry.get(UIRegistry.COPY)).addActionListener(this); ((JMenuItem) UIRegistry.get(UIRegistry.CUT)).addActionListener(this); ((JMenuItem) UIRegistry.get(UIRegistry.PASTE)).addActionListener(this); setSortOrderCycle(SortOrder.ASCENDING, SortOrder.DESCENDING, SortOrder.UNSORTED); }