svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.ui / src / main / java / org / gvsig / gui / beans / doubleslider / DoubleSlider.java @ 40561
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.gui.beans.doubleslider; |
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import java.awt.Color; |
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import java.awt.Dimension; |
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import java.awt.Graphics; |
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import java.awt.Image; |
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import java.awt.Shape; |
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import java.awt.event.MouseEvent; |
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import java.awt.event.MouseListener; |
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import java.awt.event.MouseMotionListener; |
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import java.awt.event.MouseWheelEvent; |
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import java.awt.event.MouseWheelListener; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import javax.swing.JComponent; |
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/**
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* <code>DoubleSlider</code> representa un componente que tiene dos
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* deslizadores. Se puede definir un m?ximo y un m?nimo.
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*
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* @version 04/05/2007
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* @author BorSanZa - Borja S?nchez Zamorano (borja.sanchez@iver.es)
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*/
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public class DoubleSlider extends JComponent implements MouseMotionListener, MouseListener, MouseWheelListener { |
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private static final long serialVersionUID = 663355422780987493L; |
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private ArrayList<DoubleSliderListener> actionCommandListeners = new ArrayList<DoubleSliderListener>(); |
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private final int LEFT_PAD = 2; |
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private final int RIGHT_PAD = 2; |
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private Image bufferImage = null; |
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private int width = 0; |
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private int height = 0; |
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private Graphics bufferGraphics; |
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private double x1 = 0; |
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private double x2 = 100; |
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private Color color1 = Color.BLACK; |
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private Color color2 = Color.WHITE; |
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private double minimum = 0; |
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private double maximum = 100; |
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private boolean twoSliders = true; |
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/**
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* Crea un DoubleSlider con las opciones por defecto.
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*/
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public DoubleSlider() {
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this.setPreferredSize(new Dimension(100, 21)); |
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addMouseMotionListener(this);
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addMouseListener(this);
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addMouseWheelListener(this);
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} |
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/**
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* Establece el m?ximo valor que puede tomar el componente
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* @param value
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*/
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public void setMaximum(int value) { |
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maximum = value; |
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validateValues(); |
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refreshImage(); |
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} |
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/**
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* Establece el m?nimo valor que puede tomar el componente
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* @param value
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*/
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public void setMinimum(int value) { |
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minimum = value; |
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validateValues(); |
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refreshImage(); |
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} |
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/*
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* (non-Javadoc)
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* @see javax.swing.JComponent#addNotify()
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*/
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public void addNotify() { |
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super.addNotify();
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refreshImage(); |
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} |
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/**
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* Crea un graphics con las dimensiones del componente si no estaba creado y
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* lo devuelve para poder usarlo para dibujar en ?l.
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* @return Graphics
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*/
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private Graphics getBufferGraphics() { |
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int width2 = getBounds().width;
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int height2 = getBounds().height;
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if (width2 <= 0) |
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width2 = 1;
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if (height2 <= 0) |
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height2 = 1;
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if ((width!=width2) || (height!=height2)) {
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bufferImage = createImage(width2, height2); |
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if (bufferImage == null) return null; |
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bufferGraphics = bufferImage.getGraphics(); |
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} |
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width = width2; |
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height = height2; |
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return bufferGraphics;
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} |
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public Color getColorPosition(int pos) { |
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int r, g, b, a;
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Color color1 = this.color1; |
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Color color2 = this.color2; |
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if (!isEnabled()) {
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r = Color.DARK_GRAY.getRed();
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color1 = new Color(r, r, r); |
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r = Color.WHITE.getRed();
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color2 = new Color(r, r, r); |
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} |
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double value = (pixeltovalue(pos) - minimum) / (maximum - minimum);
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if (value < 0) |
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value = 0;
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if (value > 1) |
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value = 1;
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r = (int) (color1.getRed() + ((color2.getRed() - color1.getRed()) * value));
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g = (int) (color1.getGreen() + ((color2.getGreen() - color1.getGreen()) * value));
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b = (int) (color1.getBlue() + ((color2.getBlue() - color1.getBlue()) * value));
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a = (int) (color1.getAlpha() + ((color2.getAlpha() - color1.getAlpha()) * value));
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return new Color(r, g, b, a); |
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} |
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/**
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* Redibujar el componente en el graphics temporal
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*/
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public void redrawBuffer() { |
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if (getBufferGraphics() == null) |
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return;
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getBufferGraphics().setColor(this.getBackground());
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getBufferGraphics().fillRect(0, 0, width, height); |
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int top = (height - 11) / 2; |
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top -= 6;
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Shape oldClip = getBufferGraphics().getClip();
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getBufferGraphics().setClip(LEFT_PAD + 1, top + 1, width - 2 - LEFT_PAD - RIGHT_PAD, 9); |
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if ((color1.getAlpha() != 255) || (color2.getAlpha() != 255)) { |
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for (int i = 0; (i * 4) <= (width - 1 - RIGHT_PAD); i++) { |
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for (int j = 0; (j * 4) <= (top + 6); j++) { |
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if ((i + j) % 2 == 0) |
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getBufferGraphics().setColor(Color.white);
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else
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getBufferGraphics().setColor(new Color(204, 204, 204)); |
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getBufferGraphics().fillRect(LEFT_PAD + 1 + i * 4, top + 1 + j * 4, 4, 4); |
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} |
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} |
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} |
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for (int i = LEFT_PAD + 1; i < (width - 1 - RIGHT_PAD); i++) { |
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getBufferGraphics().setColor(getColorPosition(i)); |
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getBufferGraphics().drawLine(i, top, i, top + 10);
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} |
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getBufferGraphics().setClip(oldClip); |
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if (!isEnabled())
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getBufferGraphics().setColor(Color.LIGHT_GRAY);
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else
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getBufferGraphics().setColor(Color.BLACK);
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getBufferGraphics().drawRect(LEFT_PAD, top, width - 1 - LEFT_PAD - RIGHT_PAD, 10); |
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drawTriangle(valuetopixel(x1), top, getColorPosition(valuetopixel(x1))); |
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if (twoSliders)
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drawTriangle(valuetopixel(x2), top, getColorPosition(valuetopixel(x2))); |
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} |
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/**
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* Dibujar un triangulo, un triangulo es un deslizador del componente. Puedes
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* indicarle que color tendra y en que posici?n estar?.
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* @param x
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* @param color
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*/
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private void drawTriangle(int x, int y, Color color) { |
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if (isEnabled()) {
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getBufferGraphics().setColor(color); |
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getBufferGraphics().drawLine(x, y + 12, x, y + 16); |
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getBufferGraphics().drawLine(x-1, y + 14, x-1, y + 16); |
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getBufferGraphics().drawLine(x+1, y + 14, x+1, y + 16); |
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getBufferGraphics().drawLine(x-2, y + 16, x-2, y + 16); |
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getBufferGraphics().drawLine(x+2, y + 16, x+2, y + 16); |
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} |
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if (isEnabled()) {
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getBufferGraphics().setColor(Color.BLACK);
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} else {
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getBufferGraphics().setColor(Color.GRAY);
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} |
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getBufferGraphics().drawLine(x, y + 10, x-3, y + 17); |
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getBufferGraphics().drawLine(x, y + 10, x+3, y + 17); |
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getBufferGraphics().drawLine(x-3, y + 17, x+3, y + 17); |
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} |
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/**
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* Redibujar el componente en el graphics temporal y representarlo en el
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* componente
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*/
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public void refreshImage() { |
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redrawBuffer(); |
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if (getGraphics() == null) |
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return;
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if (bufferImage != null) |
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getGraphics().drawImage(bufferImage, 0, 0, this); |
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super.paint(getGraphics());
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} |
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/**
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* Convierte un valor a la coordenada pixel correspondiente
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* @param value
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* @return
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*/
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private int valuetopixel(double value) { |
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return (int) (((value - minimum) * (width - 3.0 - LEFT_PAD - RIGHT_PAD) / (maximum - minimum)) + 1.0 + LEFT_PAD); |
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} |
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/**
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* Convierte un pixel al valor que deber?a tener
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* @param value
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* @return
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*/
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private double pixeltovalue(int value) { |
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return ((((value - 1 - LEFT_PAD) * (maximum - minimum)) / (width - 3.0 - LEFT_PAD - RIGHT_PAD)) + minimum); |
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} |
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/*
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* (non-Javadoc)
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* @see javax.swing.JComponent#paint(java.awt.Graphics)
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*/
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public void paint(Graphics g) { |
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redrawBuffer(); |
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g.drawImage(bufferImage, 0, 0, this); |
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super.paint(g);
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} |
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int valuePressed = 0; |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
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*/
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public void mousePressed(MouseEvent e) { |
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if (!isEnabled())
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return;
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if (e.getButton() != MouseEvent.BUTTON1) return; |
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double aux = pixeltovalue(e.getX());
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double aux2 = aux - x1;
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double aux3 = x2 - aux;
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if (aux3 < aux2)
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valuePressed = 2;
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else
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valuePressed = 1;
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if (!twoSliders)
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valuePressed = 1;
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changeValue(e.getX()); |
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callValueDraggedListeners(); |
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
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*/
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public void mouseReleased(MouseEvent e) { |
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valuePressed = 0;
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callValueChangedListeners(); |
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} |
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/**
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* Establecer los l?mites de los valores en caso de que sean incorrectos
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*/
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private void validateValues() { |
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if (x1 < minimum) x1 = minimum;
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if (x1 > maximum) x1 = maximum;
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if (twoSliders) {
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if (x2 < minimum) x2 = minimum;
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if (x2 > maximum) x2 = maximum;
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} |
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} |
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/**
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* Establecer el valor del extremo izquierdo del slider
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* @param value
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*/
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public void setX1(int value) { |
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setX1((double) value);
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} |
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/**
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* Establecer el valor del extremo izquierdo del slider
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* @param value
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*/
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public void setX1(double value) { |
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x1 = value; |
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if (twoSliders)
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if (x1 > x2)
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x2 = x1; |
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validateValues(); |
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refreshImage(); |
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} |
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/**
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* Es lo mismo que setX1()
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* @param value
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*/
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public void setValue(int value) { |
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setX1(value); |
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} |
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/**
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* Establecer el valor del extremo derecho del slider
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* @param value
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*/
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public void setX2(int value) { |
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setX2((double) value);
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} |
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/**
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* Establecer el valor del extremo derecho del slider
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* @param value
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*/
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public void setX2(double value) { |
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x2 = value; |
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if (x2 < x1) x1 = x2;
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validateValues(); |
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refreshImage(); |
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} |
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/**
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* Obtener el valor del extremo izquierdo del componente
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* @return
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*/
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public int getX1() { |
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return (int) x1; |
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} |
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/**
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* Devuelve lo mismo que getX1()
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* @return
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*/
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public int getValue() { |
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return getX1();
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} |
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/**
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* Obtener el valor del extremo derecho del componente
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* @return
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*/
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public int getX2() { |
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return (int) x2; |
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} |
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/**
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* M?todo usado por los eventos del rat?n para establecer una nueva posici?n
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* del slider
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* @param pos
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*/
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private void changeValue(int pos) { |
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if (!isEnabled())
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return;
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if (valuePressed == 0) return; |
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double aux = pixeltovalue(pos);
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if (valuePressed == 1) setX1(aux); |
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if (valuePressed == 2) setX2(aux); |
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
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*/
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public void mouseDragged(MouseEvent arg0) { |
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if (!isEnabled())
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return;
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changeValue(arg0.getX()); |
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callValueDraggedListeners(); |
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)
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*/
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public void mouseMoved(MouseEvent e) { |
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
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*/
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public void mouseClicked(MouseEvent e) { |
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
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*/
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public void mouseEntered(MouseEvent e) { |
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
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*/
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public void mouseExited(MouseEvent e) { |
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} |
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/**
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* A?adir un listener a la lista de eventos
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* @param listener
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*/
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public void addValueChangedListener(DoubleSliderListener listener) { |
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if (!actionCommandListeners.contains(listener))
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actionCommandListeners.add(listener); |
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} |
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/**
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* Borrar un listener de la lista de eventos
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* @param listener
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*/
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public void removeValueChangedListener(DoubleSliderListener listener) { |
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actionCommandListeners.remove(listener); |
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} |
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/**
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* Invocar a los eventos asociados al componente
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*/
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private void callValueChangedListeners() { |
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Iterator<DoubleSliderListener> iterator = actionCommandListeners.iterator();
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while (iterator.hasNext()) {
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DoubleSliderListener listener = iterator.next(); |
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listener.actionValueChanged(new DoubleSliderEvent(this)); |
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} |
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} |
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/**
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* Invocar a los eventos asociados al componente
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*/
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private void callValueDraggedListeners() { |
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Iterator<DoubleSliderListener> iterator = actionCommandListeners.iterator();
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while (iterator.hasNext()) {
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DoubleSliderListener listener = iterator.next(); |
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listener.actionValueDragged(new DoubleSliderEvent(this)); |
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} |
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} |
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|
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/**
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* @return the twoSliders
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*/
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public boolean isTwoSliders() { |
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return twoSliders;
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} |
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|
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/**
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* @param twoSliders the twoSliders to set
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*/
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public void setTwoSliders(boolean twoSliders) { |
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this.twoSliders = twoSliders;
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refreshImage(); |
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} |
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|
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/**
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* @param color1 the color1 to set
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*/
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public void setColor1(Color color1, boolean refresh) { |
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this.color1 = color1;
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if (refresh)
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refreshImage(); |
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} |
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|
| 509 |
/**
|
| 510 |
* @param color2 the color2 to set
|
| 511 |
*/
|
| 512 |
public void setColor2(Color color2, boolean refresh) { |
| 513 |
this.color2 = color2;
|
| 514 |
if (refresh)
|
| 515 |
refreshImage(); |
| 516 |
} |
| 517 |
|
| 518 |
/* (non-Javadoc)
|
| 519 |
* @see javax.swing.JComponent#setEnabled(boolean)
|
| 520 |
*/
|
| 521 |
public void setEnabled(boolean enabled) { |
| 522 |
super.setEnabled(enabled);
|
| 523 |
refreshImage(); |
| 524 |
} |
| 525 |
|
| 526 |
public void mouseWheelMoved(MouseWheelEvent e) { |
| 527 |
if (!isEnabled())
|
| 528 |
return;
|
| 529 |
|
| 530 |
double aux = pixeltovalue(e.getX());
|
| 531 |
double aux2 = aux - x1;
|
| 532 |
double aux3 = x2 - aux;
|
| 533 |
if (aux3 < aux2)
|
| 534 |
valuePressed = 2;
|
| 535 |
else
|
| 536 |
valuePressed = 1;
|
| 537 |
|
| 538 |
if (!twoSliders)
|
| 539 |
valuePressed = 1;
|
| 540 |
|
| 541 |
if (valuePressed == 1) |
| 542 |
setX1(getX1() - e.getWheelRotation()); |
| 543 |
else
|
| 544 |
setX2(getX2() - e.getWheelRotation()); |
| 545 |
valuePressed = 0;
|
| 546 |
|
| 547 |
callValueChangedListeners(); |
| 548 |
} |
| 549 |
} |