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1 package JSci.swing;
2
3 import java.awt.*;
4 import java.awt.geom.*;
5 import java.awt.event.*;
6 import javax.swing.*;
7 import javax.swing.event.*;
8 import java.text.*;
9 import java.util.*;
10
11
13 public class JSliderPlus extends JPanel {
14
15 private double startValue;
16 private double endValue;
17 private double minorTic = 10;
18 private double majorTic = 20;
19 private boolean setPaintMinorTicks = true;
20 private boolean setPaintMajorTicks = true;
21 private boolean setPaintLabels = true;
22 private ArrayList sliders = new ArrayList();
23 private ChangeListener changeListener = new ChangeListener() {
24 public void stateChanged(ChangeEvent event) {
25 repaint();
26 }
27 };
28
29
30 public static final int VERTICAL = 0;
31
32 public static final int HORIZONTAL = 1;
33
34
40 public JSliderPlus(int o,double start,double end) {
41 startValue=start;
42 endValue=end;
43 setSize(getPreferredSize());
44 updateMinorTics();
45 updateMajorTics();
46 addMouseListener(new TheMouseListener());
47 addMouseMotionListener(new TheMouseMotionListener());
48 }
49
50
54 public void setLimits(double start,double end) {
55 startValue=start;
56 endValue=end;
57 setSize(getPreferredSize());
58 updateMinorTics();
59 updateMajorTics();
60 }
61
62
63 public Dimension getPreferredSize() {
64 return new Dimension(100,200);
65 }
66
67
70 public void setMinorTickSpacing(double s) {
71 minorTic = s;
72 updateMinorTics();
73 repaint();
74 }
75
76
79 public void setMajorTickSpacing(double s) {
80 majorTic = s;
81 updateMajorTics();
82 repaint();
83 }
84
85
88 public void setPaintMinorTicks(boolean b) {
89 setPaintMinorTicks = b;
90 repaint();
91 }
92
93
96 public void setPaintMajorTicks(boolean b) {
97 setPaintMajorTicks = b;
98 repaint();
99 }
100
101
104 public void setPaintLabels(boolean b) {
105 setPaintLabels = b;
106 repaint();
107 }
108
109 private Line2D [] minorTics = null;
110 private Line2D [] majorTics = null;
111 private Point2D [] ticLabelPos = null;
112 private String  [] ticLabelText = null;
113 private static NumberFormat formatter;
114 static {
115 formatter = NumberFormat.getNumberInstance();
116 formatter.setMaximumFractionDigits(2);
117 formatter.setMaximumIntegerDigits(3);
118 }
119
120 private void updateMinorTics() {
121 double width = getSize().getWidth();
122 double heigth = getSize().getHeight();
123 int N =(int)Math.abs((endValue-startValue)/minorTic);
124 minorTics = new Line2D[N+1];
125 for (int j=0;j<=N;j++)
126 minorTics[j] = new Line2D.Double(
127 width*0.3,heigth*(0.9-j*0.8/N),
128 width*0.4,heigth*(0.9-j*0.8/N)
129 );
130 }
131
132 private void updateMajorTics() {
133 double width = getSize().getWidth();
134 double heigth = getSize().getHeight();
135 int N =(int)Math.abs((endValue-startValue)/majorTic);
136 majorTics = new Line2D[N+1];
137 ticLabelPos = new Point2D[N+1];
138 ticLabelText = new String [N+1];
139 for (int j=0;j<=N;j++) {
140 majorTics[j] =
141 new Line2D.Double(
142 width*0.25,heigth*(0.9-j*0.8/N),
143 width*0.4,heigth*(0.9-j*0.8/N)
144 );
145 ticLabelText[j] = formatter.format(startValue+j*(endValue-startValue)/N);
146 ticLabelPos[j] =
147 new Point2D.Double(0.0,heigth*(0.9-j*0.8/N)+6);
148 }
149 }
150
151
152
153 public void paintComponent(Graphics g) {
154 super.paintComponent(g);
155 Graphics2D g2 = (Graphics2D)g;
156 g2.draw(new Rectangle2D.Double(
157 getSize().getWidth()*0.45,getSize().getHeight()*0.05,
158 getSize().getWidth()*0.1,getSize().getHeight()*0.9)
159 );
160 if (setPaintMinorTicks)
161 for (int j=0;j<minorTics.length;j++)
162 g2.draw(minorTics[j]);
163 if (setPaintMajorTicks)
164 for (int j=0;j<majorTics.length;j++)
165 g2.draw(majorTics[j]);
166 if (setPaintLabels)
167 for (int j=0;j<majorTics.length;j++)
168 g2.drawString(ticLabelText[j],(int)ticLabelPos[j].getX(),(int)ticLabelPos[j].getY());
169 Color saveColor = g2.getColor();
170 for (int j=0;j<sliders.size();j++)
171 ((JPointer)sliders.get(j)).paintOnSlider(g2,startValue,endValue,getSize().getWidth(),getSize().getHeight());
172 g2.setColor(saveColor);
173 }
174
175
178 public void addJPointer(JPointer p) {
179 for (int j=0;j<sliders.size();j++) if (sliders.get(j).equals(p)) return;
180 sliders.add(p);
181 p.addChangeListener(changeListener);
182 repaint();
183 }
184
185
188 public void removeJPointer(JPointer p) {
189 int j=0;
190 while (j<sliders.size()) {
191 if (sliders.get(j).equals(p)) sliders.remove(j);
192 else j++;
193 }
194 p.removeChangeListener(changeListener);
195 repaint();
196 }
197
198
200 private JPointer dragged = null;
201 private double dragDelta;
202 private double mousePosition(MouseEvent e) {
203 return startValue+(0.9-e.getY()/getSize().getHeight())/0.8*(endValue-startValue);
204 }
205 private class TheMouseListener extends MouseAdapter {
206 public void mousePressed(MouseEvent e) {
207 for (int j=sliders.size()-1;j>=0;j--)
208 if (((JPointer)sliders.get(j)).contains(e.getPoint())) {
209 dragged=(JPointer)sliders.get(j);
210 dragDelta=dragged.getValue()-mousePosition(e);
211 dragged.setAdjusting(true);
212 break;
213 }
214 }
215 public void mouseReleased(MouseEvent e) {
216 if (dragged!=null) dragged.setAdjusting(false);
217 dragged = null;
218 boolean inside = false;
219 for (int j=0;j<sliders.size();j++)
220 if (((JPointer)sliders.get(j)).contains(e.getPoint())) {
221 inside=true;
222 break;
223 }
224 if (inside) setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
225 else setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
226 }
227 }
228
229 private class TheMouseMotionListener extends MouseMotionAdapter {
230 public void mouseMoved(MouseEvent e) {
231 boolean inside = false;
232 for (int j=0;j<sliders.size();j++)
233 if (((JPointer)sliders.get(j)).contains(e.getPoint())) {
234 inside=true;
235 break;
236 }
237 if (inside) setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
238 else setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
239 }
240 public void mouseDragged(MouseEvent e) {
241 if (dragged!=null) {
242 double to = (mousePosition(e)+dragDelta);
243 if (to>Math.max(startValue,endValue)) to=Math.max(startValue,endValue);
244 if (to<Math.min(startValue,endValue)) to=Math.min(startValue,endValue);
245 dragged.setValue(to);
246 repaint();
247 }
248 }
249 }
250
251
252
253
255 public static void main(String [] args) {
256 JFrame frm = new JFrame();
257 frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
258 JSliderPlus d = new JSliderPlus(JSliderPlus.VERTICAL,0.0,100.0);
259 frm.getContentPane().add(d);
260 frm.pack();
261 frm.show();
262
263 try { Thread.sleep(3000); } catch (InterruptedException e) {}
264 JPointer p = new JPointer(JPointer.SLIDER_SIMPLE_QUADRANGLE);
265 p.setColor(Color.MAGENTA);
266 p.setValue(25.0);
267 d.addJPointer(p);
268 try { Thread.sleep(3000); } catch (InterruptedException e) {}
269 JPointer p1 = new JPointer(JPointer.SLIDER_SIMPLE_TRIANGLE);
270 p1.setColor(Color.CYAN);
271 p1.setValue(75.0);
272 d.addJPointer(p1);
273
274 p1.addChangeListener(new ChangeListener() {
275 public void stateChanged(ChangeEvent e) {
276 double v=((JPointer)e.getSource()).getValue();
277 System.out.println("State changed: "+v);
278 }
279 });
280
281 d.setLimits(-10.0,140.0);
282 d.setMinorTickSpacing(10.0);
283 d.setMajorTickSpacing(30.0);
284
285
294 }
300
301
302
303 }
304 |
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