1 /* 2 * Copyright (c) 2002, 2018, Oracle and/or its affiliates. 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package sun.awt.X11; 26 27 import java.awt.*; 28 import java.awt.peer.*; 29 import java.awt.event.MouseEvent; 30 import java.awt.event.FocusEvent; 31 import java.awt.event.KeyEvent; 32 import java.awt.event.ActionEvent; 33 import javax.swing.plaf.basic.*; 34 import javax.swing.SwingUtilities; 35 import javax.swing.SwingConstants; 36 public class XButtonPeer extends XComponentPeer implements ButtonPeer { 37 private boolean pressed; 38 private boolean armed; 39 private Insets focusInsets; 40 private Insets borderInsets; 41 private Insets contentAreaInsets; 42 43 private static final String propertyPrefix = "Button" + "."; 44 protected Color focusColor = SystemColor.windowText; 45 46 private boolean disposed = false; 47 48 String label; 49 getPropertyPrefix()50 protected String getPropertyPrefix() { 51 return propertyPrefix; 52 } 53 preInit(XCreateWindowParams params)54 void preInit(XCreateWindowParams params) { 55 super.preInit(params); 56 borderInsets = new Insets(2,2,2,2); 57 focusInsets = new Insets(0,0,0,0); 58 contentAreaInsets = new Insets(3,3,3,3); 59 } 60 61 XButtonPeer(Button target)62 public XButtonPeer(Button target) { 63 super(target); 64 pressed = false; 65 armed = false; 66 label = target.getLabel(); 67 updateMotifColors(getPeerBackground()); 68 } 69 dispose()70 public void dispose() { 71 synchronized (target) 72 { 73 disposed = true; 74 } 75 super.dispose(); 76 } 77 isFocusable()78 public boolean isFocusable() { 79 return true; 80 } 81 82 @Override setLabel(String label)83 public void setLabel(String label) { 84 if (label == null) { 85 label = ""; 86 } 87 if (!label.equals(this.label)) { 88 this.label = label; 89 repaint(); 90 } 91 } 92 setBackground(Color c)93 public void setBackground(Color c) { 94 updateMotifColors(c); 95 super.setBackground(c); 96 } 97 handleJavaMouseEvent(MouseEvent e)98 void handleJavaMouseEvent(MouseEvent e) { 99 super.handleJavaMouseEvent(e); 100 int id = e.getID(); 101 switch (id) { 102 case MouseEvent.MOUSE_PRESSED: 103 if (XToolkit.isLeftMouseButton(e) ) { 104 Button b = (Button) e.getSource(); 105 106 if(b.contains(e.getX(), e.getY())) { 107 if (!isEnabled()) { 108 // Disabled buttons ignore all input... 109 return; 110 } 111 pressed = true; 112 armed = true; 113 repaint(); 114 } 115 } 116 117 break; 118 119 case MouseEvent.MOUSE_RELEASED: 120 if (XToolkit.isLeftMouseButton(e)) { 121 if (armed) 122 { 123 @SuppressWarnings("deprecation") 124 final int modifiers = e.getModifiers(); 125 action(e.getWhen(), modifiers); 126 } 127 pressed = false; 128 armed = false; 129 repaint(); 130 } 131 132 break; 133 134 case MouseEvent.MOUSE_ENTERED: 135 if (pressed) 136 armed = true; 137 break; 138 case MouseEvent.MOUSE_EXITED: 139 armed = false; 140 break; 141 } 142 } 143 144 145 // NOTE: This method is called by privileged threads. 146 // DO NOT INVOKE CLIENT CODE ON THIS THREAD! action(final long when, final int modifiers)147 public void action(final long when, final int modifiers) { 148 postEvent(new ActionEvent(target, ActionEvent.ACTION_PERFORMED, 149 ((Button)target).getActionCommand(), 150 when, modifiers)); 151 } 152 153 focusGained(FocusEvent e)154 public void focusGained(FocusEvent e) { 155 super.focusGained(e); 156 repaint(); 157 } 158 focusLost(FocusEvent e)159 public void focusLost(FocusEvent e) { 160 super.focusLost(e); 161 repaint(); 162 } 163 handleJavaKeyEvent(KeyEvent e)164 void handleJavaKeyEvent(KeyEvent e) { 165 int id = e.getID(); 166 switch (id) { 167 case KeyEvent.KEY_PRESSED: 168 if (e.getKeyCode() == KeyEvent.VK_SPACE) 169 { 170 pressed=true; 171 armed=true; 172 repaint(); 173 @SuppressWarnings("deprecation") 174 final int modifiers = e.getModifiers(); 175 action(e.getWhen(), modifiers); 176 } 177 178 break; 179 180 case KeyEvent.KEY_RELEASED: 181 if (e.getKeyCode() == KeyEvent.VK_SPACE) 182 { 183 pressed = false; 184 armed = false; 185 repaint(); 186 } 187 188 break; 189 190 191 } 192 } 193 getMinimumSize()194 public Dimension getMinimumSize() { 195 FontMetrics fm = getFontMetrics(getPeerFont()); 196 if ( label == null ) { 197 label = ""; 198 } 199 return new Dimension(fm.stringWidth(label) + 14, 200 fm.getHeight() + 8); 201 } 202 203 /** 204 * This method is called from Toolkit Thread and so it should not call any 205 * client code. 206 */ 207 @Override paintPeer(final Graphics g)208 void paintPeer(final Graphics g) { 209 if (!disposed) { 210 Dimension size = getPeerSize(); 211 g.setColor( getPeerBackground() ); /* erase the existing button remains */ 212 g.fillRect(0,0, size.width , size.height); 213 paintBorder(g,borderInsets.left, 214 borderInsets.top, 215 size.width-(borderInsets.left+borderInsets.right), 216 size.height-(borderInsets.top+borderInsets.bottom)); 217 218 FontMetrics fm = g.getFontMetrics(); 219 220 Rectangle textRect,iconRect,viewRect; 221 222 textRect = new Rectangle(); 223 viewRect = new Rectangle(); 224 iconRect = new Rectangle(); 225 226 227 viewRect.width = size.width - (contentAreaInsets.left+contentAreaInsets.right); 228 viewRect.height = size.height - (contentAreaInsets.top+contentAreaInsets.bottom); 229 viewRect.x = contentAreaInsets.left; 230 viewRect.y = contentAreaInsets.top; 231 String llabel = (label != null) ? label : ""; 232 // layout the text and icon 233 String text = SwingUtilities.layoutCompoundLabel( 234 fm, llabel, null, 235 SwingConstants.CENTER, SwingConstants.CENTER, 236 SwingConstants.CENTER, SwingConstants.CENTER, 237 viewRect, iconRect, textRect, 0); 238 239 Font f = getPeerFont(); 240 241 g.setFont(f); 242 243 // perform UI specific press action, e.g. Windows L&F shifts text 244 if (pressed && armed) { 245 paintButtonPressed(g,target); 246 } 247 248 paintText(g, target, textRect, text); 249 250 if (hasFocus()) { 251 // paint UI specific focus 252 paintFocus(g,focusInsets.left, 253 focusInsets.top, 254 size.width-(focusInsets.left+focusInsets.right)-1, 255 size.height-(focusInsets.top+focusInsets.bottom)-1); 256 } 257 } 258 flush(); 259 } 260 paintBorder(Graphics g, int x, int y, int w, int h)261 public void paintBorder(Graphics g, int x, int y, int w, int h) { 262 drawMotif3DRect(g, x, y, w-1, h-1, pressed); 263 } 264 paintFocus(Graphics g, int x, int y, int w, int h)265 protected void paintFocus(Graphics g, int x, int y, int w, int h){ 266 g.setColor(focusColor); 267 g.drawRect(x,y,w,h); 268 } 269 paintButtonPressed(Graphics g, Component b)270 protected void paintButtonPressed(Graphics g, Component b) { 271 Dimension size = getPeerSize(); 272 g.setColor(selectColor); 273 g.fillRect(contentAreaInsets.left, 274 contentAreaInsets.top, 275 size.width-(contentAreaInsets.left+contentAreaInsets.right), 276 size.height-(contentAreaInsets.top+contentAreaInsets.bottom)); 277 278 } paintText(Graphics g, Component c, Rectangle textRect, String text)279 protected void paintText(Graphics g, Component c, Rectangle textRect, String text) { 280 FontMetrics fm = g.getFontMetrics(); 281 282 int mnemonicIndex = -1; 283 284 /* Draw the Text */ 285 if(isEnabled()) { 286 /*** paint the text normally */ 287 g.setColor(getPeerForeground()); 288 BasicGraphicsUtils.drawStringUnderlineCharAt(g,text,mnemonicIndex , textRect.x , textRect.y + fm.getAscent() ); 289 } 290 else { 291 /*** paint the text disabled ***/ 292 g.setColor(getPeerBackground().brighter()); 293 BasicGraphicsUtils.drawStringUnderlineCharAt(g,text, mnemonicIndex, 294 textRect.x, textRect.y + fm.getAscent()); 295 g.setColor(getPeerBackground().darker()); 296 BasicGraphicsUtils.drawStringUnderlineCharAt(g,text, mnemonicIndex, 297 textRect.x - 1, textRect.y + fm.getAscent() - 1); 298 } 299 } 300 } 301