root / branches / v2_0_0_prep / extensions / extGeoreferencing / src / org / gvsig / georeferencing / ui / zoom / layers / ZoomCursorGraphicLayer.java @ 32311
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| 1 | 32311 | nbrodin | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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| 2 | *
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| 3 | * Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
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| 4 | *
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| 5 | * This program is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU General Public License
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| 7 | * as published by the Free Software Foundation; either version 2
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| 8 | * of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * This program is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | * GNU General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU General Public License
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| 16 | * along with this program; if not, write to the Free Software
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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| 18 | */
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| 19 | package org.gvsig.georeferencing.ui.zoom.layers; |
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| 20 | |||
| 21 | import java.awt.Color; |
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| 22 | import java.awt.Cursor; |
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| 23 | import java.awt.Graphics2D; |
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| 24 | import java.awt.Image; |
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| 25 | import java.awt.Point; |
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| 26 | import java.awt.Toolkit; |
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| 27 | import java.awt.event.MouseEvent; |
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| 28 | import java.awt.geom.Rectangle2D; |
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| 29 | |||
| 30 | import javax.swing.ImageIcon; |
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| 31 | |||
| 32 | import org.gvsig.georeferencing.ui.zoom.CanvasZone; |
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| 33 | import org.gvsig.georeferencing.ui.zoom.IGraphicLayer; |
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| 34 | import org.gvsig.georeferencing.ui.zoom.tools.ToolEvent; |
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| 35 | import org.gvsig.georeferencing.ui.zoom.tools.ToolListener; |
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| 36 | |||
| 37 | /**
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| 38 | * Capa gr?fica que se dibuja sobre una vista de zoom un cursor
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| 39 | * rectangular que representa una ventanta de zoom sobre la vista
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| 40 | * 22/12/2007
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| 41 | * @author Nacho Brodin (nachobrodin@gmail.com)
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| 42 | */
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| 43 | public class ZoomCursorGraphicLayer implements IGraphicLayer { |
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| 44 | //Operaciones sobre el cursor gr?fico
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| 45 | private static final int NONE = -1; |
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| 46 | private static final int REDIM_LEFT = 0; |
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| 47 | private static final int REDIM_RIGHT = 1; |
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| 48 | private static final int REDIM_UP = 2; |
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| 49 | private static final int REDIM_DOWN = 3; |
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| 50 | private static final int MOVE_UR = 4; |
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| 51 | private static final int MOVE_UL = 5; |
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| 52 | private static final int MOVE_LR = 6; |
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| 53 | private static final int MOVE_LL = 7; |
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| 54 | public static final int CENTER = 8; |
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| 55 | |||
| 56 | private final int MIN_CURSOR_SIZE = 10; |
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| 57 | private int operation = NONE; |
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| 58 | |||
| 59 | private int wCursor = 0; |
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| 60 | private int hCursor = 0; |
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| 61 | private int posX = 0; |
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| 62 | private int posY = 0; |
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| 63 | private Image iconHoriz = null; |
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| 64 | private Image iconVert = null; |
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| 65 | private Image iconMove = null; |
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| 66 | private CanvasZone canvas = null; |
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| 67 | //Memoria temporal de las posiciones en X y en Y previas a una operaci?n
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| 68 | private int prevX, prevY; |
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| 69 | //Listener para que objetos externos sean informados de las acciones de la capa
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| 70 | private ToolListener listener = null; |
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| 71 | |||
| 72 | private boolean active = true; |
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| 73 | private boolean sleepActive = true; |
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| 74 | private Color cursorColor = Color.RED; |
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| 75 | |||
| 76 | private boolean initSize = true; |
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| 77 | private int initWCursor = 0; |
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| 78 | private int initHCursor = 0; |
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| 79 | |||
| 80 | /**
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| 81 | * Constructor. Asigna el ancho y alto del rectangulo del cursor y la
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| 82 | * posici?n en la inicializaci?n.
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| 83 | * @param pX Posici?n en X del cursor en la vista
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| 84 | * @param pY Posici?n en Y del cursor en la vista
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| 85 | * @param w Ancho del cursor en la vista
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| 86 | * @param h Alto del cursor en la vista
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| 87 | * @param listener Listener para acciones de finalizaci?n de la operaci?n de zoom
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| 88 | */
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| 89 | public ZoomCursorGraphicLayer(int pX, int pY, int w, int h, ToolListener listener) { |
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| 90 | wCursor = w; |
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| 91 | hCursor = h; |
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| 92 | posX = pX; |
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| 93 | posY = pY; |
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| 94 | this.listener = listener;
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| 95 | try {
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| 96 | iconHoriz = new ImageIcon(getClass().getClassLoader().getResource("images/FlechaHorizCursor.gif")).getImage(); |
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| 97 | iconVert = new ImageIcon(getClass().getClassLoader().getResource("images/FlechaVertCursor.gif")).getImage(); |
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| 98 | iconMove = new ImageIcon(getClass().getClassLoader().getResource("images/FlechaMoveCursor.gif")).getImage(); |
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| 99 | } catch (NullPointerException e) { |
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| 100 | |||
| 101 | } |
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| 102 | } |
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| 103 | |||
| 104 | /**
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| 105 | * Asigna el canvas
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| 106 | * @param canvas
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| 107 | */
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| 108 | public void setCanvas(CanvasZone canvas) { |
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| 109 | this.canvas = canvas;
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| 110 | canvas.addMouseMotionListener(this);
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| 111 | canvas.addMouseListener(this);
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| 112 | } |
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| 113 | |||
| 114 | /**
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| 115 | * Asigna la posici?n del cursor en el canvas
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| 116 | * @param x Posici?n en X
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| 117 | * @param y Posici?n en Y
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| 118 | */
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| 119 | public void setCursorPosition(int x, int y) { |
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| 120 | this.posX = x;
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| 121 | this.posY = y;
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| 122 | } |
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| 123 | |||
| 124 | /**
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| 125 | * Asigna el tama?o del cursor en pixeles del canvas
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| 126 | * @param w Ancho
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| 127 | * @param h Alto
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| 128 | */
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| 129 | public void setCursorSize(int w, int h) { |
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| 130 | //Salva la primera vez como tama?o de inicializaci?n
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| 131 | if(initSize) {
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| 132 | this.initWCursor = w;
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| 133 | this.initHCursor = h;
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| 134 | initSize = false;
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| 135 | } |
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| 136 | this.wCursor = w;
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| 137 | this.hCursor = h;
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| 138 | } |
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| 139 | |||
| 140 | /**
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| 141 | * Inicializa el tama?o del cursor
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| 142 | */
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| 143 | public void resetCursorSize() { |
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| 144 | this.wCursor = initWCursor;
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| 145 | this.hCursor = initHCursor;
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| 146 | } |
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| 147 | |||
| 148 | /**
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| 149 | * Obtiene las coordenadas de la ventana de zoom. Las coordenadas son devueltas
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| 150 | * en referencia a la vista.
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| 151 | * @return
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| 152 | */
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| 153 | public Rectangle2D getCursorViewCoordinates() { |
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| 154 | return new Rectangle2D.Double(posX - (wCursor >> 1), posY - (hCursor >> 1), wCursor, hCursor); |
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| 155 | } |
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| 156 | |||
| 157 | /*
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| 158 | * (non-Javadoc)
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| 159 | * @see org.gvsig.rastertools.georeferencing.ui.zoom.IGraphicLayer#draw(java.awt.Graphics2D, org.gvsig.raster.datastruct.Extent, int, int)
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| 160 | */
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| 161 | public void draw(Graphics2D g, Rectangle2D ext, int w, int h) { |
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| 162 | g.setColor(cursorColor); |
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| 163 | wCursor = Math.max(wCursor, MIN_CURSOR_SIZE);
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| 164 | hCursor = Math.max(hCursor, MIN_CURSOR_SIZE);
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| 165 | g.drawRect(posX - (wCursor >> 1), posY - (hCursor >> 1), wCursor, hCursor); |
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| 166 | g.drawLine(posX, posY - (hCursor >> 1), posX, 0); |
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| 167 | g.drawLine(posX, posY + (hCursor >> 1), posX, h);
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| 168 | g.drawLine(0, posY, posX - (wCursor >> 1), posY); |
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| 169 | g.drawLine(posX + (wCursor >> 1), posY, w, posY);
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| 170 | } |
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| 171 | |||
| 172 | /*
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| 173 | * (non-Javadoc)
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| 174 | * @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
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| 175 | */
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| 176 | public void mouseClicked(MouseEvent e) { |
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| 177 | } |
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| 178 | |||
| 179 | /*
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| 180 | * (non-Javadoc)
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| 181 | * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
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| 182 | */
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| 183 | public void mouseEntered(MouseEvent e) { |
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| 184 | } |
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| 185 | |||
| 186 | /*
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| 187 | * (non-Javadoc)
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| 188 | * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
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| 189 | */
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| 190 | public void mouseExited(MouseEvent e) { |
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| 191 | } |
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| 192 | |||
| 193 | /*
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| 194 | * (non-Javadoc)
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| 195 | * @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
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| 196 | */
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| 197 | public void mousePressed(MouseEvent e) { |
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| 198 | prevX = e.getX(); |
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| 199 | prevY = e.getY(); |
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| 200 | } |
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| 201 | |||
| 202 | /*
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| 203 | * (non-Javadoc)
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| 204 | * @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
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| 205 | */
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| 206 | public void mouseReleased(MouseEvent e) { |
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| 207 | if(!isActive()) {
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| 208 | return;
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| 209 | } |
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| 210 | if(getOperation() != NONE) {
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| 211 | setOperation(NONE); |
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| 212 | if(listener != null) { |
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| 213 | listener.endAction(new ToolEvent(this)); |
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| 214 | } |
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| 215 | } |
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| 216 | } |
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| 217 | |||
| 218 | |||
| 219 | /**
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| 220 | * Cuando se pincha y se arrastra en los contornos se redimensiona el marco.
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| 221 | */
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| 222 | public void mouseDragged(MouseEvent e) { |
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| 223 | if(!isActive()) {
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| 224 | return;
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| 225 | } |
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| 226 | if(getOperation() == MOVE_UR) {
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| 227 | posX += (e.getX() - (wCursor >> 1)) - posX;
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| 228 | posY += (e.getY() + (hCursor >> 1)) - posY;
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| 229 | return;
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| 230 | } |
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| 231 | if(getOperation() == MOVE_UL) {
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| 232 | posX += (e.getX() + (wCursor >> 1)) - posX;
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| 233 | posY += (e.getY() + (hCursor >> 1)) - posY;
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| 234 | return;
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| 235 | } |
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| 236 | if(getOperation() == MOVE_LR) {
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| 237 | posX += (e.getX() - (wCursor >> 1)) - posX;
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| 238 | posY += (e.getY() - (hCursor >> 1)) - posY;
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| 239 | return;
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| 240 | } |
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| 241 | if(getOperation() == MOVE_LL) {
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| 242 | posX += (e.getX() + (wCursor >> 1)) - posX;
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| 243 | posY += (e.getY() - (hCursor >> 1)) - posY;
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| 244 | return;
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| 245 | } |
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| 246 | if(getOperation() == REDIM_LEFT) {
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| 247 | wCursor += prevX - e.getX(); |
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| 248 | posX = e.getX() + (wCursor >> 1);
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| 249 | prevX = e.getX(); |
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| 250 | return;
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| 251 | } |
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| 252 | if(getOperation() == REDIM_RIGHT) {
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| 253 | int prevULX = posX - (wCursor >> 1); |
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| 254 | wCursor += e.getX() - prevX; |
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| 255 | posX = prevULX + (wCursor >> 1);
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| 256 | prevX = e.getX(); |
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| 257 | return;
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| 258 | } |
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| 259 | if(getOperation() == REDIM_UP) {
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| 260 | hCursor += prevY - e.getY(); |
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| 261 | posY = e.getY() + (hCursor >> 1);
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| 262 | prevY = e.getY(); |
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| 263 | return;
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| 264 | } |
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| 265 | if(getOperation() == REDIM_DOWN) {
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| 266 | int prevULY = posY - (hCursor >> 1); |
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| 267 | hCursor += e.getY() - prevY; |
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| 268 | posY = prevULY + (hCursor >> 1);
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| 269 | prevY = e.getY(); |
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| 270 | return;
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| 271 | } |
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| 272 | } |
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| 273 | |||
| 274 | /*
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| 275 | * (non-Javadoc)
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| 276 | * @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)
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| 277 | */
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| 278 | public void mouseMoved(MouseEvent e) { |
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| 279 | if(!isActive()) {
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| 280 | return;
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| 281 | } |
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| 282 | int pxLeft = posX - (wCursor >> 1); |
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| 283 | int pxRight = posX + (wCursor >> 1); |
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| 284 | int pyUp = posY - (hCursor >> 1); |
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| 285 | int pyDown = posY + (hCursor >> 1); |
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| 286 | |||
| 287 | //Si estamos fuera del ?rea del cuadrado + 2 p?xeles ponemos el cursor por defecto y no hacemos nada
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| 288 | if(e.getX() < (pxLeft - 2) || e.getX() > (pxRight + 2) || e.getY() < (pyUp - 2) || e.getY() > (pyDown + 2)) { |
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| 289 | setOperation(NONE); |
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| 290 | if(canvas.getCursor().getType() != Cursor.DEFAULT_CURSOR) { |
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| 291 | canvas.setCursor(new Cursor(Cursor.DEFAULT_CURSOR)); |
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| 292 | listener.offTool(new ToolEvent(this)); |
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| 293 | } |
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| 294 | return;
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| 295 | } |
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| 296 | |||
| 297 | if(e.getX() >= (pxRight - 2) && e.getY() <= (pyUp + 2)) { |
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| 298 | if(iconMove != null) { |
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| 299 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconMove, new Point(16, 16), "")); |
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| 300 | } |
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| 301 | setOperation(MOVE_UR); |
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| 302 | return;
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| 303 | } |
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| 304 | if(e.getX() <= (pxLeft + 2) && e.getY() <= (pyUp + 2)) { |
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| 305 | if(iconMove != null) { |
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| 306 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconMove, new Point(16, 16), "")); |
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| 307 | } |
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| 308 | setOperation(MOVE_UL); |
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| 309 | return;
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| 310 | } |
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| 311 | if(e.getX() <= (pxLeft + 2) && e.getY() >= (pyDown - 2)) { |
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| 312 | if(iconMove != null) { |
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| 313 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconMove, new Point(16, 16), "")); |
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| 314 | } |
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| 315 | setOperation(MOVE_LL); |
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| 316 | return;
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| 317 | } |
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| 318 | if(e.getX() >= (pxRight - 2) && e.getY() >= (pyDown - 2)) { |
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| 319 | if(iconMove != null) { |
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| 320 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconMove, new Point(16, 16), "")); |
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| 321 | } |
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| 322 | setOperation(MOVE_LR); |
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| 323 | return;
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| 324 | } |
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| 325 | if(e.getX() <= (pxLeft + 1)) { |
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| 326 | if(iconHoriz != null) { |
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| 327 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconHoriz, new Point(16, 16), "")); |
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| 328 | } |
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| 329 | setOperation(REDIM_LEFT); |
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| 330 | return;
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| 331 | } |
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| 332 | if(e.getX() >= (pxRight - 1)) { |
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| 333 | if(iconHoriz != null) { |
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| 334 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconHoriz, new Point(16, 16), "")); |
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| 335 | } |
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| 336 | setOperation(REDIM_RIGHT); |
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| 337 | return;
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| 338 | } |
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| 339 | if(e.getY() <= (pyUp + 1)) { |
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| 340 | if(iconVert != null) { |
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| 341 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconVert, new Point(16, 16), "")); |
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| 342 | } |
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| 343 | setOperation(REDIM_UP); |
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| 344 | return;
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| 345 | } |
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| 346 | if(e.getY() >= (pyDown - 1)) { |
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| 347 | if(iconVert != null) { |
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| 348 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconVert, new Point(16, 16), "")); |
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| 349 | } |
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| 350 | setOperation(REDIM_DOWN); |
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| 351 | return;
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| 352 | } |
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| 353 | setOperation(NONE); |
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| 354 | if(canvas.getCursor().getType() != Cursor.DEFAULT_CURSOR) { |
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| 355 | canvas.setCursor(new Cursor(Cursor.DEFAULT_CURSOR)); |
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| 356 | listener.offTool(new ToolEvent(this)); |
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| 357 | } |
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| 358 | } |
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| 359 | |||
| 360 | /**
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| 361 | * Obtiene la operaci?n sobre el cursor que hay seleccionada
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| 362 | * @return Entero que representa a la operaci?n
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| 363 | */
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| 364 | public int getOperation() { |
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| 365 | return operation;
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| 366 | } |
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| 367 | |||
| 368 | /**
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| 369 | * Asigna la operaci?n sobre el cursor que hay seleccionada
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| 370 | * @param op
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| 371 | */
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| 372 | public void setOperation(int op) { |
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| 373 | operation = op; |
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| 374 | if(op != NONE) {
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| 375 | listener.onTool(new ToolEvent(this)); |
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| 376 | } |
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| 377 | } |
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| 378 | |||
| 379 | /**
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| 380 | * Desactiva la herramienta temporalmente. Guarda el estado en el que estaba
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| 381 | * para restaurarlo cuando se invoque a awake
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| 382 | */
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| 383 | public void sleep() { |
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| 384 | sleepActive = active; |
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| 385 | active = false;
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| 386 | } |
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| 387 | |||
| 388 | /**
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| 389 | * Recupera el estado de activaci?n que ten?a antes de la ?ltima invocaci?n
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| 390 | * de sleep
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| 391 | */
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| 392 | public void awake() { |
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| 393 | active = sleepActive; |
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| 394 | } |
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| 395 | |||
| 396 | /**
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| 397 | * Consulta si es posible interactuar con el la capa de cursor de zoom
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| 398 | * @return
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| 399 | */
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| 400 | public boolean isActive() { |
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| 401 | return active;
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| 402 | } |
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| 403 | |||
| 404 | /**
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| 405 | * Asigna el flag que activa y desactiva la interactuaci?n con capa de control de zoom
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| 406 | * @param activeEvent
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| 407 | */
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| 408 | public void setActive(boolean active) { |
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| 409 | this.active = active;
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| 410 | } |
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| 411 | |||
| 412 | /**
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| 413 | * Obtiene el color del cursor
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| 414 | * @return Color
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| 415 | */
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| 416 | public Color getColor() { |
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| 417 | return cursorColor;
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| 418 | } |
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| 419 | |||
| 420 | /**
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| 421 | * Asigna el color del cursor
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| 422 | * @param color
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| 423 | */
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| 424 | public void setColor(Color color) { |
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| 425 | this.cursorColor = color;
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| 426 | } |
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| 427 | } |