root / trunk / libraries / libUIComponent / src / org / gvsig / gui / beans / doubleslider / DoubleSlider.java @ 12939
History | View | Annotate | Download (13.2 KB)
| 1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
|---|---|
| 2 |
*
|
| 3 |
* Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
|
| 4 |
*
|
| 5 |
* This program is free software; you can redistribute it and/or
|
| 6 |
* modify it under the terms of the GNU General Public License
|
| 7 |
* as published by the Free Software Foundation; either version 2
|
| 8 |
* of the License, or (at your option) any later version.
|
| 9 |
*
|
| 10 |
* This program is distributed in the hope that it will be useful,
|
| 11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 13 |
* GNU General Public License for more details.
|
| 14 |
*
|
| 15 |
* You should have received a copy of the GNU General Public License
|
| 16 |
* along with this program; if not, write to the Free Software
|
| 17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 18 |
*/
|
| 19 |
package org.gvsig.gui.beans.doubleslider; |
| 20 |
|
| 21 |
import java.awt.Color; |
| 22 |
import java.awt.Dimension; |
| 23 |
import java.awt.Graphics; |
| 24 |
import java.awt.Image; |
| 25 |
import java.awt.Shape; |
| 26 |
import java.awt.event.MouseEvent; |
| 27 |
import java.awt.event.MouseListener; |
| 28 |
import java.awt.event.MouseMotionListener; |
| 29 |
import java.awt.event.MouseWheelEvent; |
| 30 |
import java.awt.event.MouseWheelListener; |
| 31 |
import java.util.ArrayList; |
| 32 |
import java.util.Iterator; |
| 33 |
|
| 34 |
import javax.swing.JComponent; |
| 35 |
/**
|
| 36 |
* <code>DoubleSlider</code> representa un componente que tiene dos
|
| 37 |
* deslizadores. Se puede definir un m?ximo y un m?nimo.
|
| 38 |
*
|
| 39 |
* @version 04/05/2007
|
| 40 |
* @author BorSanZa - Borja S?nchez Zamorano (borja.sanchez@iver.es)
|
| 41 |
*/
|
| 42 |
public class DoubleSlider extends JComponent implements MouseMotionListener, MouseListener, MouseWheelListener { |
| 43 |
private static final long serialVersionUID = 663355422780987493L; |
| 44 |
|
| 45 |
private ArrayList actionCommandListeners = new ArrayList(); |
| 46 |
|
| 47 |
private final int LEFT_PAD = 2; |
| 48 |
private final int RIGHT_PAD = 2; |
| 49 |
|
| 50 |
private Image bufferImage = null; |
| 51 |
private int width = 0; |
| 52 |
private int height = 0; |
| 53 |
private Graphics bufferGraphics; |
| 54 |
private double x1 = 0; |
| 55 |
private double x2 = 100; |
| 56 |
|
| 57 |
private Color color1 = Color.BLACK; |
| 58 |
private Color color2 = Color.WHITE; |
| 59 |
|
| 60 |
private double minimum = 0; |
| 61 |
private double maximum = 100; |
| 62 |
|
| 63 |
private boolean twoSliders = true; |
| 64 |
|
| 65 |
/**
|
| 66 |
* Crea un DoubleSlider con las opciones por defecto.
|
| 67 |
*/
|
| 68 |
public DoubleSlider() {
|
| 69 |
this.setPreferredSize(new Dimension(100, 21)); |
| 70 |
addMouseMotionListener(this);
|
| 71 |
addMouseListener(this);
|
| 72 |
addMouseWheelListener(this);
|
| 73 |
} |
| 74 |
|
| 75 |
/**
|
| 76 |
* Establece el m?ximo valor que puede tomar el componente
|
| 77 |
* @param value
|
| 78 |
*/
|
| 79 |
public void setMaximum(int value) { |
| 80 |
maximum = value; |
| 81 |
validateValues(); |
| 82 |
refreshImage(); |
| 83 |
} |
| 84 |
|
| 85 |
/**
|
| 86 |
* Establece el m?nimo valor que puede tomar el componente
|
| 87 |
* @param value
|
| 88 |
*/
|
| 89 |
public void setMinimum(int value) { |
| 90 |
minimum = value; |
| 91 |
validateValues(); |
| 92 |
refreshImage(); |
| 93 |
} |
| 94 |
|
| 95 |
/*
|
| 96 |
* (non-Javadoc)
|
| 97 |
* @see javax.swing.JComponent#addNotify()
|
| 98 |
*/
|
| 99 |
public void addNotify() { |
| 100 |
super.addNotify();
|
| 101 |
|
| 102 |
refreshImage(); |
| 103 |
} |
| 104 |
|
| 105 |
/**
|
| 106 |
* Crea un graphics con las dimensiones del componente si no estaba creado y
|
| 107 |
* lo devuelve para poder usarlo para dibujar en ?l.
|
| 108 |
* @return Graphics
|
| 109 |
*/
|
| 110 |
private Graphics getBufferGraphics() { |
| 111 |
int width2 = getBounds().width;
|
| 112 |
int height2 = getBounds().height;
|
| 113 |
if (width2 <= 0) |
| 114 |
width2 = 1;
|
| 115 |
if (height2 <= 0) |
| 116 |
height2 = 1;
|
| 117 |
|
| 118 |
if ((width!=width2) || (height!=height2)) {
|
| 119 |
bufferImage = createImage(width2, height2); |
| 120 |
if (bufferImage == null) return null; |
| 121 |
bufferGraphics = bufferImage.getGraphics(); |
| 122 |
} |
| 123 |
|
| 124 |
width = width2; |
| 125 |
height = height2; |
| 126 |
|
| 127 |
return bufferGraphics;
|
| 128 |
} |
| 129 |
|
| 130 |
public Color getColorPosition(int pos) { |
| 131 |
int r, g, b, a;
|
| 132 |
|
| 133 |
Color color1 = this.color1; |
| 134 |
Color color2 = this.color2; |
| 135 |
if (!isEnabled()) {
|
| 136 |
r = Color.DARK_GRAY.getRed();
|
| 137 |
color1 = new Color(r, r, r); |
| 138 |
r = Color.WHITE.getRed();
|
| 139 |
color2 = new Color(r, r, r); |
| 140 |
} |
| 141 |
|
| 142 |
double value = (pixeltovalue(pos) - minimum) / (maximum - minimum);
|
| 143 |
if (value < 0) |
| 144 |
value = 0;
|
| 145 |
if (value > 1) |
| 146 |
value = 1;
|
| 147 |
|
| 148 |
r = (int) (color1.getRed() + ((color2.getRed() - color1.getRed()) * value));
|
| 149 |
g = (int) (color1.getGreen() + ((color2.getGreen() - color1.getGreen()) * value));
|
| 150 |
b = (int) (color1.getBlue() + ((color2.getBlue() - color1.getBlue()) * value));
|
| 151 |
a = (int) (color1.getAlpha() + ((color2.getAlpha() - color1.getAlpha()) * value));
|
| 152 |
return new Color(r, g, b, a); |
| 153 |
} |
| 154 |
/**
|
| 155 |
* Redibujar el componente en el graphics temporal
|
| 156 |
*/
|
| 157 |
public void redrawBuffer() { |
| 158 |
if (getBufferGraphics() == null) |
| 159 |
return;
|
| 160 |
|
| 161 |
getBufferGraphics().setColor(this.getBackground());
|
| 162 |
getBufferGraphics().fillRect(0, 0, width, height); |
| 163 |
|
| 164 |
int top = (height - 11) / 2; |
| 165 |
top -= 6;
|
| 166 |
|
| 167 |
Shape oldClip = getBufferGraphics().getClip();
|
| 168 |
getBufferGraphics().setClip(LEFT_PAD + 1, top + 1, width - 2 - LEFT_PAD - RIGHT_PAD, 9); |
| 169 |
|
| 170 |
if ((color1.getAlpha() != 255) || (color2.getAlpha() != 255)) { |
| 171 |
for (int i = 0; (i * 4) <= (width - 1 - RIGHT_PAD); i++) { |
| 172 |
for (int j = 0; (j * 4) <= (top + 6); j++) { |
| 173 |
if ((i + j) % 2 == 0) |
| 174 |
getBufferGraphics().setColor(Color.white);
|
| 175 |
else
|
| 176 |
getBufferGraphics().setColor(new Color(204, 204, 204)); |
| 177 |
getBufferGraphics().fillRect(LEFT_PAD + 1 + i * 4, top + 1 + j * 4, 4, 4); |
| 178 |
} |
| 179 |
} |
| 180 |
} |
| 181 |
|
| 182 |
for (int i = LEFT_PAD + 1; i < (width - 1 - RIGHT_PAD); i++) { |
| 183 |
getBufferGraphics().setColor(getColorPosition(i)); |
| 184 |
getBufferGraphics().drawLine(i, top, i, top + 10);
|
| 185 |
} |
| 186 |
getBufferGraphics().setClip(oldClip); |
| 187 |
|
| 188 |
if (!isEnabled())
|
| 189 |
getBufferGraphics().setColor(Color.LIGHT_GRAY);
|
| 190 |
else
|
| 191 |
getBufferGraphics().setColor(Color.BLACK);
|
| 192 |
getBufferGraphics().drawRect(LEFT_PAD, top, width - 1 - LEFT_PAD - RIGHT_PAD, 10); |
| 193 |
|
| 194 |
|
| 195 |
drawTriangle(valuetopixel(x1), top, getColorPosition(valuetopixel(x1))); |
| 196 |
if (twoSliders)
|
| 197 |
drawTriangle(valuetopixel(x2), top, getColorPosition(valuetopixel(x2))); |
| 198 |
} |
| 199 |
|
| 200 |
/**
|
| 201 |
* Dibujar un triangulo, un triangulo es un deslizador del componente. Puedes
|
| 202 |
* indicarle que color tendra y en que posici?n estar?.
|
| 203 |
* @param x
|
| 204 |
* @param color
|
| 205 |
*/
|
| 206 |
private void drawTriangle(int x, int y, Color color) { |
| 207 |
if (isEnabled()) {
|
| 208 |
getBufferGraphics().setColor(color); |
| 209 |
getBufferGraphics().drawLine(x, y + 12, x, y + 16); |
| 210 |
getBufferGraphics().drawLine(x-1, y + 14, x-1, y + 16); |
| 211 |
getBufferGraphics().drawLine(x+1, y + 14, x+1, y + 16); |
| 212 |
getBufferGraphics().drawLine(x-2, y + 16, x-2, y + 16); |
| 213 |
getBufferGraphics().drawLine(x+2, y + 16, x+2, y + 16); |
| 214 |
} |
| 215 |
|
| 216 |
if (isEnabled()) {
|
| 217 |
getBufferGraphics().setColor(Color.BLACK);
|
| 218 |
} else {
|
| 219 |
getBufferGraphics().setColor(Color.GRAY);
|
| 220 |
} |
| 221 |
getBufferGraphics().drawLine(x, y + 10, x-3, y + 17); |
| 222 |
getBufferGraphics().drawLine(x, y + 10, x+3, y + 17); |
| 223 |
getBufferGraphics().drawLine(x-3, y + 17, x+3, y + 17); |
| 224 |
} |
| 225 |
|
| 226 |
/**
|
| 227 |
* Redibujar el componente en el graphics temporal y representarlo en el
|
| 228 |
* componente
|
| 229 |
*/
|
| 230 |
public void refreshImage() { |
| 231 |
redrawBuffer(); |
| 232 |
if (bufferImage != null) |
| 233 |
getGraphics().drawImage(bufferImage, 0, 0, this); |
| 234 |
super.paint(getGraphics());
|
| 235 |
} |
| 236 |
|
| 237 |
/**
|
| 238 |
* Convierte un valor a la coordenada pixel correspondiente
|
| 239 |
* @param value
|
| 240 |
* @return
|
| 241 |
*/
|
| 242 |
private int valuetopixel(double value) { |
| 243 |
return (int) (((value - minimum) * (width - 3.0 - LEFT_PAD - RIGHT_PAD) / (maximum - minimum)) + 1.0 + LEFT_PAD); |
| 244 |
} |
| 245 |
|
| 246 |
/**
|
| 247 |
* Convierte un pixel al valor que deber?a tener
|
| 248 |
* @param value
|
| 249 |
* @return
|
| 250 |
*/
|
| 251 |
private double pixeltovalue(int value) { |
| 252 |
return ((((value - 1 - LEFT_PAD) * (maximum - minimum)) / (width - 3.0 - LEFT_PAD - RIGHT_PAD)) + minimum); |
| 253 |
} |
| 254 |
|
| 255 |
/*
|
| 256 |
* (non-Javadoc)
|
| 257 |
* @see javax.swing.JComponent#paint(java.awt.Graphics)
|
| 258 |
*/
|
| 259 |
public void paint(Graphics g) { |
| 260 |
redrawBuffer(); |
| 261 |
g.drawImage(bufferImage, 0, 0, this); |
| 262 |
super.paint(g);
|
| 263 |
} |
| 264 |
|
| 265 |
int valuePressed = 0; |
| 266 |
|
| 267 |
/*
|
| 268 |
* (non-Javadoc)
|
| 269 |
* @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
|
| 270 |
*/
|
| 271 |
public void mousePressed(MouseEvent e) { |
| 272 |
if (!isEnabled())
|
| 273 |
return;
|
| 274 |
if (e.getButton() != MouseEvent.BUTTON1) return; |
| 275 |
|
| 276 |
double aux = pixeltovalue(e.getX());
|
| 277 |
double aux2 = aux - x1;
|
| 278 |
double aux3 = x2 - aux;
|
| 279 |
if (aux3 < aux2)
|
| 280 |
valuePressed = 2;
|
| 281 |
else
|
| 282 |
valuePressed = 1;
|
| 283 |
|
| 284 |
if (!twoSliders)
|
| 285 |
valuePressed = 1;
|
| 286 |
|
| 287 |
changeValue(e.getX()); |
| 288 |
callValueDraggedListeners(); |
| 289 |
} |
| 290 |
|
| 291 |
/*
|
| 292 |
* (non-Javadoc)
|
| 293 |
* @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
|
| 294 |
*/
|
| 295 |
public void mouseReleased(MouseEvent e) { |
| 296 |
valuePressed = 0;
|
| 297 |
callValueChangedListeners(); |
| 298 |
} |
| 299 |
|
| 300 |
/**
|
| 301 |
* Establecer los l?mites de los valores en caso de que sean incorrectos
|
| 302 |
*/
|
| 303 |
private void validateValues() { |
| 304 |
if (x1 < minimum) x1 = minimum;
|
| 305 |
if (x1 > maximum) x1 = maximum;
|
| 306 |
if (twoSliders) {
|
| 307 |
if (x2 < minimum) x2 = minimum;
|
| 308 |
if (x2 > maximum) x2 = maximum;
|
| 309 |
} |
| 310 |
} |
| 311 |
|
| 312 |
/**
|
| 313 |
* Establecer el valor del extremo izquierdo del slider
|
| 314 |
* @param value
|
| 315 |
*/
|
| 316 |
public void setX1(int value) { |
| 317 |
setX1((double) value);
|
| 318 |
} |
| 319 |
|
| 320 |
/**
|
| 321 |
* Establecer el valor del extremo izquierdo del slider
|
| 322 |
* @param value
|
| 323 |
*/
|
| 324 |
public void setX1(double value) { |
| 325 |
x1 = value; |
| 326 |
if (twoSliders)
|
| 327 |
if (x1 > x2)
|
| 328 |
x2 = x1; |
| 329 |
validateValues(); |
| 330 |
refreshImage(); |
| 331 |
} |
| 332 |
|
| 333 |
/**
|
| 334 |
* Es lo mismo que setX1()
|
| 335 |
* @param value
|
| 336 |
*/
|
| 337 |
public void setValue(int value) { |
| 338 |
setX1(value); |
| 339 |
} |
| 340 |
|
| 341 |
/**
|
| 342 |
* Establecer el valor del extremo derecho del slider
|
| 343 |
* @param value
|
| 344 |
*/
|
| 345 |
public void setX2(int value) { |
| 346 |
setX2((double) value);
|
| 347 |
} |
| 348 |
|
| 349 |
/**
|
| 350 |
* Establecer el valor del extremo derecho del slider
|
| 351 |
* @param value
|
| 352 |
*/
|
| 353 |
public void setX2(double value) { |
| 354 |
x2 = value; |
| 355 |
if (x2 < x1) x1 = x2;
|
| 356 |
validateValues(); |
| 357 |
refreshImage(); |
| 358 |
} |
| 359 |
|
| 360 |
/**
|
| 361 |
* Obtener el valor del extremo izquierdo del componente
|
| 362 |
* @return
|
| 363 |
*/
|
| 364 |
public int getX1() { |
| 365 |
return (int) x1; |
| 366 |
} |
| 367 |
|
| 368 |
/**
|
| 369 |
* Devuelve lo mismo que getX1()
|
| 370 |
* @return
|
| 371 |
*/
|
| 372 |
public int getValue() { |
| 373 |
return getX1();
|
| 374 |
} |
| 375 |
|
| 376 |
/**
|
| 377 |
* Obtener el valor del extremo derecho del componente
|
| 378 |
* @return
|
| 379 |
*/
|
| 380 |
public int getX2() { |
| 381 |
return (int) x2; |
| 382 |
} |
| 383 |
|
| 384 |
/**
|
| 385 |
* M?todo usado por los eventos del rat?n para establecer una nueva posici?n
|
| 386 |
* del slider
|
| 387 |
* @param pos
|
| 388 |
*/
|
| 389 |
private void changeValue(int pos) { |
| 390 |
if (!isEnabled())
|
| 391 |
return;
|
| 392 |
if (valuePressed == 0) return; |
| 393 |
|
| 394 |
double aux = pixeltovalue(pos);
|
| 395 |
|
| 396 |
if (valuePressed == 1) setX1(aux); |
| 397 |
if (valuePressed == 2) setX2(aux); |
| 398 |
} |
| 399 |
|
| 400 |
/*
|
| 401 |
* (non-Javadoc)
|
| 402 |
* @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
|
| 403 |
*/
|
| 404 |
public void mouseDragged(MouseEvent arg0) { |
| 405 |
if (!isEnabled())
|
| 406 |
return;
|
| 407 |
changeValue(arg0.getX()); |
| 408 |
callValueDraggedListeners(); |
| 409 |
} |
| 410 |
|
| 411 |
/*
|
| 412 |
* (non-Javadoc)
|
| 413 |
* @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)
|
| 414 |
*/
|
| 415 |
public void mouseMoved(MouseEvent e) { |
| 416 |
} |
| 417 |
|
| 418 |
/*
|
| 419 |
* (non-Javadoc)
|
| 420 |
* @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
|
| 421 |
*/
|
| 422 |
public void mouseClicked(MouseEvent e) { |
| 423 |
} |
| 424 |
|
| 425 |
/*
|
| 426 |
* (non-Javadoc)
|
| 427 |
* @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
|
| 428 |
*/
|
| 429 |
public void mouseEntered(MouseEvent e) { |
| 430 |
} |
| 431 |
|
| 432 |
/*
|
| 433 |
* (non-Javadoc)
|
| 434 |
* @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
|
| 435 |
*/
|
| 436 |
public void mouseExited(MouseEvent e) { |
| 437 |
} |
| 438 |
|
| 439 |
/**
|
| 440 |
* A?adir un listener a la lista de eventos
|
| 441 |
* @param listener
|
| 442 |
*/
|
| 443 |
public void addValueChangedListener(DoubleSliderListener listener) { |
| 444 |
if (!actionCommandListeners.contains(listener))
|
| 445 |
actionCommandListeners.add(listener); |
| 446 |
} |
| 447 |
|
| 448 |
/**
|
| 449 |
* Borrar un listener de la lista de eventos
|
| 450 |
* @param listener
|
| 451 |
*/
|
| 452 |
public void removeValueChangedListener(DoubleSliderListener listener) { |
| 453 |
actionCommandListeners.remove(listener); |
| 454 |
} |
| 455 |
|
| 456 |
/**
|
| 457 |
* Invocar a los eventos asociados al componente
|
| 458 |
*/
|
| 459 |
private void callValueChangedListeners() { |
| 460 |
Iterator acIterator = actionCommandListeners.iterator();
|
| 461 |
while (acIterator.hasNext()) {
|
| 462 |
DoubleSliderListener listener = (DoubleSliderListener) acIterator.next(); |
| 463 |
listener.actionValueChanged(new DoubleSliderEvent(this)); |
| 464 |
} |
| 465 |
} |
| 466 |
|
| 467 |
/**
|
| 468 |
* Invocar a los eventos asociados al componente
|
| 469 |
*/
|
| 470 |
private void callValueDraggedListeners() { |
| 471 |
Iterator acIterator = actionCommandListeners.iterator();
|
| 472 |
while (acIterator.hasNext()) {
|
| 473 |
DoubleSliderListener listener = (DoubleSliderListener) acIterator.next(); |
| 474 |
listener.actionValueDragged(new DoubleSliderEvent(this)); |
| 475 |
} |
| 476 |
} |
| 477 |
|
| 478 |
/**
|
| 479 |
* @return the twoSliders
|
| 480 |
*/
|
| 481 |
public boolean isTwoSliders() { |
| 482 |
return twoSliders;
|
| 483 |
} |
| 484 |
|
| 485 |
/**
|
| 486 |
* @param twoSliders the twoSliders to set
|
| 487 |
*/
|
| 488 |
public void setTwoSliders(boolean twoSliders) { |
| 489 |
this.twoSliders = twoSliders;
|
| 490 |
refreshImage(); |
| 491 |
} |
| 492 |
|
| 493 |
/**
|
| 494 |
* @param color1 the color1 to set
|
| 495 |
*/
|
| 496 |
public void setColor1(Color color1, boolean refresh) { |
| 497 |
this.color1 = color1;
|
| 498 |
if (refresh)
|
| 499 |
refreshImage(); |
| 500 |
} |
| 501 |
|
| 502 |
/**
|
| 503 |
* @param color2 the color2 to set
|
| 504 |
*/
|
| 505 |
public void setColor2(Color color2, boolean refresh) { |
| 506 |
this.color2 = color2;
|
| 507 |
if (refresh)
|
| 508 |
refreshImage(); |
| 509 |
} |
| 510 |
|
| 511 |
/* (non-Javadoc)
|
| 512 |
* @see javax.swing.JComponent#setEnabled(boolean)
|
| 513 |
*/
|
| 514 |
public void setEnabled(boolean enabled) { |
| 515 |
super.setEnabled(enabled);
|
| 516 |
refreshImage(); |
| 517 |
} |
| 518 |
|
| 519 |
public void mouseWheelMoved(MouseWheelEvent e) { |
| 520 |
if (!isEnabled())
|
| 521 |
return;
|
| 522 |
|
| 523 |
double aux = pixeltovalue(e.getX());
|
| 524 |
double aux2 = aux - x1;
|
| 525 |
double aux3 = x2 - aux;
|
| 526 |
if (aux3 < aux2)
|
| 527 |
valuePressed = 2;
|
| 528 |
else
|
| 529 |
valuePressed = 1;
|
| 530 |
|
| 531 |
if (!twoSliders)
|
| 532 |
valuePressed = 1;
|
| 533 |
|
| 534 |
if (valuePressed == 1) |
| 535 |
setX1(getX1() - e.getWheelRotation()); |
| 536 |
else
|
| 537 |
setX2(getX2() - e.getWheelRotation()); |
| 538 |
valuePressed = 0;
|
| 539 |
|
| 540 |
callValueChangedListeners(); |
| 541 |
} |
| 542 |
} |