J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-1998 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | package com.sun.java.swing.plaf.motif; |
| 26 | |
| 27 | import java.awt.*; |
| 28 | import java.awt.event.*; |
| 29 | |
| 30 | import javax.swing.*; |
| 31 | import javax.swing.text.*; |
| 32 | import javax.swing.plaf.*; |
| 33 | |
| 34 | /** |
| 35 | * Provides the look and feel features that are common across |
| 36 | * the Motif/CDE text LAF implementations. |
| 37 | * <p> |
| 38 | * <strong>Warning:</strong> |
| 39 | * Serialized objects of this class will not be compatible with |
| 40 | * future Swing releases. The current serialization support is appropriate |
| 41 | * for short term storage or RMI between applications running the same |
| 42 | * version of Swing. A future release of Swing will provide support for |
| 43 | * long term persistence. |
| 44 | * |
| 45 | * @author Timothy Prinzing |
| 46 | */ |
| 47 | public class MotifTextUI { |
| 48 | |
| 49 | /** |
| 50 | * Creates the object to use for a caret for all of the Motif |
| 51 | * text components. The caret is rendered as an I-beam on Motif. |
| 52 | * |
| 53 | * @return the caret object |
| 54 | */ |
| 55 | public static Caret createCaret() { |
| 56 | return new MotifCaret(); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * The motif caret is rendered as an I beam. |
| 61 | * <p> |
| 62 | * <strong>Warning:</strong> |
| 63 | * Serialized objects of this class will not be compatible with |
| 64 | * future Swing releases. The current serialization support is appropriate |
| 65 | * for short term storage or RMI between applications running the same |
| 66 | * version of Swing. A future release of Swing will provide support for |
| 67 | * long term persistence. |
| 68 | */ |
| 69 | public static class MotifCaret extends DefaultCaret implements UIResource { |
| 70 | |
| 71 | /** |
| 72 | * Called when the component containing the caret gains |
| 73 | * focus. This is implemented to repaint the component |
| 74 | * so the focus rectangle will be re-rendered, as well |
| 75 | * as providing the superclass behavior. |
| 76 | * |
| 77 | * @param e the focus event |
| 78 | * @see FocusListener#focusGained |
| 79 | */ |
| 80 | public void focusGained(FocusEvent e) { |
| 81 | super.focusGained(e); |
| 82 | getComponent().repaint(); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Called when the component containing the caret loses |
| 87 | * focus. This is implemented to set the caret to visibility |
| 88 | * to false. |
| 89 | * |
| 90 | * @param e the focus event |
| 91 | * @see FocusListener#focusLost |
| 92 | */ |
| 93 | public void focusLost(FocusEvent e) { |
| 94 | super.focusLost(e); |
| 95 | getComponent().repaint(); |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Damages the area surrounding the caret to cause |
| 100 | * it to be repainted. If paint() is reimplemented, |
| 101 | * this method should also be reimplemented. |
| 102 | * |
| 103 | * @param r the current location of the caret, does nothing if null |
| 104 | * @see #paint |
| 105 | */ |
| 106 | protected void damage(Rectangle r) { |
| 107 | if (r != null) { |
| 108 | x = r.x - IBeamOverhang - 1; |
| 109 | y = r.y; |
| 110 | width = r.width + (2 * IBeamOverhang) + 3; |
| 111 | height = r.height; |
| 112 | repaint(); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Renders the caret as a vertical line. If this is reimplemented |
| 118 | * the damage method should also be reimplemented as it assumes the |
| 119 | * shape of the caret is a vertical line. Does nothing if isVisible() |
| 120 | * is false. The caret color is derived from getCaretColor() if |
| 121 | * the component has focus, else from getDisabledTextColor(). |
| 122 | * |
| 123 | * @param g the graphics context |
| 124 | * @see #damage |
| 125 | */ |
| 126 | public void paint(Graphics g) { |
| 127 | if(isVisible()) { |
| 128 | try { |
| 129 | JTextComponent c = getComponent(); |
| 130 | Color fg = c.hasFocus() ? c.getCaretColor() : |
| 131 | c.getDisabledTextColor(); |
| 132 | TextUI mapper = c.getUI(); |
| 133 | int dot = getDot(); |
| 134 | Rectangle r = mapper.modelToView(c, dot); |
| 135 | int x0 = r.x - IBeamOverhang; |
| 136 | int x1 = r.x + IBeamOverhang; |
| 137 | int y0 = r.y + 1; |
| 138 | int y1 = r.y + r.height - 2; |
| 139 | g.setColor(fg); |
| 140 | g.drawLine(r.x, y0, r.x, y1); |
| 141 | g.drawLine(x0, y0, x1, y0); |
| 142 | g.drawLine(x0, y1, x1, y1); |
| 143 | } catch (BadLocationException e) { |
| 144 | // can't render I guess |
| 145 | //System.err.println("Can't render caret"); |
| 146 | } |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | static final int IBeamOverhang = 2; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Default bindings all keymaps implementing the Motif feel. |
| 155 | */ |
| 156 | static final JTextComponent.KeyBinding[] defaultBindings = { |
| 157 | new JTextComponent.KeyBinding(KeyStroke.getKeyStroke(KeyEvent.VK_INSERT, |
| 158 | InputEvent.CTRL_MASK), |
| 159 | DefaultEditorKit.copyAction), |
| 160 | new JTextComponent.KeyBinding(KeyStroke.getKeyStroke(KeyEvent.VK_INSERT, |
| 161 | InputEvent.SHIFT_MASK), |
| 162 | DefaultEditorKit.pasteAction), |
| 163 | new JTextComponent.KeyBinding(KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, |
| 164 | InputEvent.SHIFT_MASK), |
| 165 | DefaultEditorKit.cutAction), |
| 166 | new JTextComponent.KeyBinding(KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, |
| 167 | InputEvent.SHIFT_MASK), |
| 168 | DefaultEditorKit.selectionBackwardAction), |
| 169 | new JTextComponent.KeyBinding(KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, |
| 170 | InputEvent.SHIFT_MASK), |
| 171 | DefaultEditorKit.selectionForwardAction), |
| 172 | }; |
| 173 | |
| 174 | |
| 175 | } |