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1
19
20 package org.netbeans.modules.welcome.content;
21
22 import java.awt.Cursor  ;
23 import java.awt.Dimension ;
24 import java.awt.Font ;
25 import java.awt.FontMetrics ;
26 import java.awt.Graphics ;
27 import java.awt.Graphics2D ;
28 import java.awt.Insets ;
29 import java.awt.Rectangle ;
30 import java.awt.event.ActionListener ;
31 import java.awt.event.FocusEvent ;
32 import java.awt.event.FocusListener ;
33 import java.awt.event.MouseEvent ;
34 import java.awt.event.MouseListener ;
35 import javax.swing.ImageIcon ;
36 import javax.swing.JButton ;
37 import javax.swing.JLabel ;
38 import javax.swing.border.EmptyBorder ;
39 import org.openide.util.Utilities;
40
41
45 public abstract class LinkButton extends JButton
46 implements Constants, MouseListener , ActionListener , FocusListener {
47
48 private boolean underline = false;
49
50 final ImageIcon BULLET_ICON = new ImageIcon ( Utilities.loadImage( BULLET_IMAGE ) );
51
52 public LinkButton( String label, boolean showBullet ) {
53 super( label );
54 setForeground( Utils.getColor(HEADER_TEXT_COLOR) );
55 setFont( REGULAR_FONT );
56 setBorder( new EmptyBorder (1, 1, 1, 1) );
57 setCursor( Cursor.getPredefinedCursor(Cursor.HAND_CURSOR) );
58 setHorizontalAlignment( JLabel.LEFT );
59 addMouseListener(this);
60 setFocusable( true );
61 if( showBullet )
62 setIcon( BULLET_ICON );
63
64 setMargin( new Insets (0, 0, 0, 0) );
65 setBorderPainted( false );
66 setFocusPainted( false );
67 setRolloverEnabled( true );
68 setContentAreaFilled( false );
69
70 addActionListener( this );
71 addFocusListener( this );
72 }
73
74 public void mouseClicked(MouseEvent e) {
75 }
76
77 public void mousePressed(MouseEvent e) {
78 }
79
80 public void mouseReleased(MouseEvent e) {
81 }
82
83 public void mouseEntered(MouseEvent e) {
84 underline = true;
85 setForeground( Utils.getColor(RSS_LINK_COLOR) );
86 repaint();
87 onMouseEntered( e );
88 }
89
90 public void mouseExited(MouseEvent e) {
91 underline = false;
92 setForeground( Utils.getColor(HEADER_TEXT_COLOR) );
93 repaint();
94 onMouseExited( e );
95 }
96
97 protected void paintComponent(Graphics g) {
98 Graphics2D g2 = Utils.prepareGraphics( g );
99 super.paintComponent(g2);
100
101 Dimension size = getSize();
102 if( hasFocus() ) {
103 g2.setStroke( LINK_IN_FOCUS_STROKE );
104 g2.setColor( Utils.getColor(LINK_IN_FOCUS_COLOR) );
105 g2.drawRect( 0, 0, size.width - 1, size.height - 1 );
106 }
107 }
108
109 public void focusLost(FocusEvent e) {
110 }
111
112 public void focusGained(FocusEvent e) {
113 Rectangle rect = getBounds();
114 rect.grow( 0, FONT_SIZE );
115 scrollRectToVisible( rect );
116 }
117
118 protected void onMouseExited(MouseEvent e) {
119 }
120
121 protected void onMouseEntered(MouseEvent e) {
122 }
123
124 public void paint(Graphics g) {
125 super.paint(g);
126 if( underline ) {
127 Font f = getFont();
128 FontMetrics fm = getFontMetrics(f);
129 int iconWidth = 0;
130 if( null != getIcon() ) {
131 iconWidth = getIcon().getIconWidth()+getIconTextGap();
132 }
133 int x1 = iconWidth;
134 int y1 = fm.getHeight();
135 int x2 = fm.stringWidth(getText()) + iconWidth;
136 if( getText().length() > 0 )
137 g.drawLine(x1, y1, x2, y1);
138 }
139 }
140 }
141 |
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