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15  * accompanied this code).
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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