svn-gvsig-desktop / trunk / extensions / extGeoreferencing / src / org / gvsig / georeferencing / ui / zoom / layers / ZoomCursorGraphicLayer.java @ 29728
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1 | 18530 | 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 | |||
55 | private final int MIN_CURSOR_SIZE = 10; |
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56 | private int operation = NONE; |
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57 | |||
58 | private int wCursor = 0; |
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59 | private int hCursor = 0; |
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60 | private int posX = 0; |
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61 | private int posY = 0; |
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62 | private Image iconHoriz = null; |
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63 | private Image iconVert = null; |
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64 | private Image iconMove = null; |
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65 | private CanvasZone canvas = null; |
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66 | //Memoria temporal de las posiciones en X y en Y previas a una operaci?n
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67 | private int prevX, prevY; |
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68 | //Listener para que objetos externos sean informados de las acciones de la capa
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69 | private ToolListener listener = null; |
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70 | |||
71 | private boolean active = true; |
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72 | private boolean sleepActive = true; |
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73 | private Color cursorColor = Color.RED; |
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74 | 29728 | nbrodin | |
75 | private boolean initSize = true; |
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76 | private int initWCursor = 0; |
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77 | private int initHCursor = 0; |
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78 | 18530 | nbrodin | |
79 | /**
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80 | * Constructor. Asigna el ancho y alto del rectangulo del cursor y la
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81 | * posici?n en la inicializaci?n.
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82 | * @param pX Posici?n en X del cursor en la vista
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83 | * @param pY Posici?n en Y del cursor en la vista
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84 | * @param w Ancho del cursor en la vista
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85 | * @param h Alto del cursor en la vista
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86 | * @param listener Listener para acciones de finalizaci?n de la operaci?n de zoom
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87 | */
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88 | public ZoomCursorGraphicLayer(int pX, int pY, int w, int h, ToolListener listener) { |
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89 | wCursor = w; |
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90 | hCursor = h; |
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91 | posX = pX; |
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92 | posY = pY; |
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93 | this.listener = listener;
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94 | try {
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95 | iconHoriz = new ImageIcon(getClass().getClassLoader().getResource("images/FlechaHorizCursor.gif")).getImage(); |
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96 | iconVert = new ImageIcon(getClass().getClassLoader().getResource("images/FlechaVertCursor.gif")).getImage(); |
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97 | iconMove = new ImageIcon(getClass().getClassLoader().getResource("images/FlechaMoveCursor.gif")).getImage(); |
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98 | } catch (NullPointerException e) { |
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99 | |||
100 | } |
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101 | } |
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102 | |||
103 | /**
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104 | * Asigna el canvas
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105 | * @param canvas
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106 | */
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107 | public void setCanvas(CanvasZone canvas) { |
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108 | this.canvas = canvas;
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109 | canvas.addMouseMotionListener(this);
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110 | canvas.addMouseListener(this);
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111 | } |
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112 | |||
113 | /**
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114 | * Asigna la posici?n del cursor en el canvas
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115 | * @param x Posici?n en X
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116 | * @param y Posici?n en Y
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117 | */
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118 | public void setCursorPosition(int x, int y) { |
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119 | this.posX = x;
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120 | this.posY = y;
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121 | } |
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122 | |||
123 | /**
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124 | * Asigna el tama?o del cursor en pixeles del canvas
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125 | * @param w Ancho
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126 | * @param h Alto
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127 | */
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128 | public void setCursorSize(int w, int h) { |
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129 | 29728 | nbrodin | //Salva la primera vez como tama?o de inicializaci?n
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130 | if(initSize) {
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131 | this.initWCursor = w;
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132 | this.initHCursor = h;
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133 | initSize = false;
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134 | } |
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135 | 18530 | nbrodin | this.wCursor = w;
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136 | this.hCursor = h;
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137 | } |
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138 | |||
139 | /**
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140 | 29728 | nbrodin | * Inicializa el tama?o del cursor
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141 | */
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142 | public void resetCursorSize() { |
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143 | this.wCursor = initWCursor;
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144 | this.hCursor = initHCursor;
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145 | } |
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146 | |||
147 | /**
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148 | 18530 | nbrodin | * Obtiene las coordenadas de la ventana de zoom. Las coordenadas son devueltas
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149 | * en referencia a la vista.
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150 | * @return
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151 | */
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152 | public Rectangle2D getCursorViewCoordinates() { |
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153 | return new Rectangle2D.Double(posX - (wCursor >> 1), posY - (hCursor >> 1), wCursor, hCursor); |
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154 | } |
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155 | |||
156 | /*
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157 | * (non-Javadoc)
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158 | * @see org.gvsig.rastertools.georeferencing.ui.zoom.IGraphicLayer#draw(java.awt.Graphics2D, org.gvsig.raster.datastruct.Extent, int, int)
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159 | */
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160 | public void draw(Graphics2D g, Rectangle2D ext, int w, int h) { |
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161 | g.setColor(cursorColor); |
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162 | wCursor = Math.max(wCursor, MIN_CURSOR_SIZE);
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163 | hCursor = Math.max(hCursor, MIN_CURSOR_SIZE);
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164 | g.drawRect(posX - (wCursor >> 1), posY - (hCursor >> 1), wCursor, hCursor); |
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165 | g.drawLine(posX, posY - (hCursor >> 1), posX, 0); |
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166 | g.drawLine(posX, posY + (hCursor >> 1), posX, h);
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167 | g.drawLine(0, posY, posX - (wCursor >> 1), posY); |
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168 | g.drawLine(posX + (wCursor >> 1), posY, w, posY);
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169 | } |
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170 | |||
171 | /*
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172 | * (non-Javadoc)
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173 | * @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
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174 | */
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175 | public void mouseClicked(MouseEvent e) { |
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176 | } |
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177 | |||
178 | /*
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179 | * (non-Javadoc)
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180 | * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
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181 | */
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182 | public void mouseEntered(MouseEvent e) { |
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183 | } |
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184 | |||
185 | /*
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186 | * (non-Javadoc)
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187 | * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
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188 | */
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189 | public void mouseExited(MouseEvent e) { |
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190 | } |
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191 | |||
192 | /*
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193 | * (non-Javadoc)
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194 | * @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
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195 | */
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196 | public void mousePressed(MouseEvent e) { |
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197 | prevX = e.getX(); |
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198 | prevY = e.getY(); |
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199 | } |
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200 | |||
201 | /*
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202 | * (non-Javadoc)
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203 | * @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
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204 | */
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205 | public void mouseReleased(MouseEvent e) { |
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206 | if(!isActive())
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207 | return;
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208 | if(getOperation() != NONE) {
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209 | setOperation(NONE); |
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210 | if(listener != null) |
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211 | listener.endAction(new ToolEvent(this)); |
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212 | } |
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213 | } |
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214 | |||
215 | |||
216 | /**
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217 | * Cuando se pincha y se arrastra en los contornos se redimensiona el marco.
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218 | */
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219 | public void mouseDragged(MouseEvent e) { |
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220 | if(!isActive())
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221 | return;
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222 | if(getOperation() == MOVE_UR) {
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223 | posX += (e.getX() - (wCursor >> 1)) - posX;
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224 | posY += (e.getY() + (hCursor >> 1)) - posY;
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225 | return;
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226 | } |
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227 | if(getOperation() == MOVE_UL) {
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228 | posX += (e.getX() + (wCursor >> 1)) - posX;
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229 | posY += (e.getY() + (hCursor >> 1)) - posY;
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230 | return;
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231 | } |
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232 | if(getOperation() == MOVE_LR) {
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233 | posX += (e.getX() - (wCursor >> 1)) - posX;
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234 | posY += (e.getY() - (hCursor >> 1)) - posY;
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235 | return;
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236 | } |
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237 | if(getOperation() == MOVE_LL) {
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238 | posX += (e.getX() + (wCursor >> 1)) - posX;
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239 | posY += (e.getY() - (hCursor >> 1)) - posY;
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240 | return;
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241 | } |
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242 | if(getOperation() == REDIM_LEFT) {
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243 | wCursor += prevX - e.getX(); |
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244 | posX = e.getX() + (wCursor >> 1);
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245 | prevX = e.getX(); |
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246 | return;
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247 | } |
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248 | if(getOperation() == REDIM_RIGHT) {
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249 | int prevULX = posX - (wCursor >> 1); |
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250 | wCursor += e.getX() - prevX; |
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251 | posX = prevULX + (wCursor >> 1);
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252 | prevX = e.getX(); |
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253 | return;
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254 | } |
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255 | if(getOperation() == REDIM_UP) {
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256 | hCursor += prevY - e.getY(); |
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257 | posY = e.getY() + (hCursor >> 1);
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258 | prevY = e.getY(); |
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259 | return;
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260 | } |
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261 | if(getOperation() == REDIM_DOWN) {
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262 | int prevULY = posY - (hCursor >> 1); |
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263 | hCursor += e.getY() - prevY; |
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264 | posY = prevULY + (hCursor >> 1);
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265 | prevY = e.getY(); |
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266 | return;
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267 | } |
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268 | } |
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269 | |||
270 | /*
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271 | * (non-Javadoc)
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272 | * @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)
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273 | */
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274 | public void mouseMoved(MouseEvent e) { |
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275 | if(!isActive())
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276 | return;
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277 | int pxLeft = posX - (wCursor >> 1); |
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278 | int pxRight = posX + (wCursor >> 1); |
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279 | int pyUp = posY - (hCursor >> 1); |
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280 | int pyDown = posY + (hCursor >> 1); |
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281 | |||
282 | //Si estamos fuera del ?rea del cuadrado + 2 p?xeles ponemos el cursor por defecto y no hacemos nada
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283 | if(e.getX() < (pxLeft - 2) || e.getX() > (pxRight + 2) || e.getY() < (pyUp - 2) || e.getY() > (pyDown + 2)) { |
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284 | setOperation(NONE); |
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285 | if(canvas.getCursor().getType() != Cursor.DEFAULT_CURSOR) { |
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286 | canvas.setCursor(new Cursor(Cursor.DEFAULT_CURSOR)); |
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287 | listener.offTool(new ToolEvent(this)); |
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288 | } |
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289 | return;
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290 | } |
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291 | |||
292 | if(e.getX() >= (pxRight - 2) && e.getY() <= (pyUp + 2)) { |
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293 | if(iconMove != null) |
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294 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconMove, new Point(16, 16), "")); |
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295 | setOperation(MOVE_UR); |
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296 | return;
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297 | } |
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298 | if(e.getX() <= (pxLeft + 2) && e.getY() <= (pyUp + 2)) { |
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299 | if(iconMove != null) |
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300 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconMove, new Point(16, 16), "")); |
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301 | setOperation(MOVE_UL); |
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302 | return;
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303 | } |
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304 | if(e.getX() <= (pxLeft + 2) && e.getY() >= (pyDown - 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 | setOperation(MOVE_LL); |
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308 | return;
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309 | } |
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310 | if(e.getX() >= (pxRight - 2) && e.getY() >= (pyDown - 2)) { |
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311 | if(iconMove != null) |
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312 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconMove, new Point(16, 16), "")); |
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313 | setOperation(MOVE_LR); |
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314 | return;
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315 | } |
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316 | if(e.getX() <= (pxLeft + 1)) { |
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317 | if(iconHoriz != null) |
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318 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconHoriz, new Point(16, 16), "")); |
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319 | setOperation(REDIM_LEFT); |
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320 | return;
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321 | } |
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322 | if(e.getX() >= (pxRight - 1)) { |
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323 | if(iconHoriz != null) |
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324 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconHoriz, new Point(16, 16), "")); |
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325 | setOperation(REDIM_RIGHT); |
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326 | return;
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327 | } |
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328 | if(e.getY() <= (pyUp + 1)) { |
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329 | if(iconVert != null) |
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330 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconVert, new Point(16, 16), "")); |
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331 | setOperation(REDIM_UP); |
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332 | return;
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333 | } |
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334 | if(e.getY() >= (pyDown - 1)) { |
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335 | if(iconVert != null) |
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336 | canvas.setCursor(Toolkit.getDefaultToolkit().createCustomCursor(iconVert, new Point(16, 16), "")); |
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337 | setOperation(REDIM_DOWN); |
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338 | return;
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339 | } |
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340 | setOperation(NONE); |
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341 | if(canvas.getCursor().getType() != Cursor.DEFAULT_CURSOR) { |
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342 | canvas.setCursor(new Cursor(Cursor.DEFAULT_CURSOR)); |
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343 | listener.offTool(new ToolEvent(this)); |
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344 | } |
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345 | } |
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346 | |||
347 | /**
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348 | * Obtiene la operaci?n sobre el cursor que hay seleccionada
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349 | * @return Entero que representa a la operaci?n
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350 | */
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351 | public int getOperation() { |
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352 | return operation;
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353 | } |
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354 | |||
355 | /**
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356 | * Asigna la operaci?n sobre el cursor que hay seleccionada
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357 | * @param op
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358 | */
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359 | private void setOperation(int op) { |
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360 | operation = op; |
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361 | if(op != NONE)
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362 | listener.onTool(new ToolEvent(this)); |
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363 | } |
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364 | |||
365 | /**
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366 | * Desactiva la herramienta temporalmente. Guarda el estado en el que estaba
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367 | * para restaurarlo cuando se invoque a awake
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368 | */
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369 | public void sleep() { |
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370 | sleepActive = active; |
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371 | active = false;
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372 | } |
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373 | |||
374 | /**
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375 | * Recupera el estado de activaci?n que ten?a antes de la ?ltima invocaci?n
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376 | * de sleep
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377 | */
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378 | public void awake() { |
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379 | active = sleepActive; |
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380 | } |
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381 | |||
382 | /**
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383 | * Consulta si es posible interactuar con el la capa de cursor de zoom
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384 | * @return
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385 | */
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386 | public boolean isActive() { |
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387 | return active;
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388 | } |
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389 | |||
390 | /**
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391 | * Asigna el flag que activa y desactiva la interactuaci?n con capa de control de zoom
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392 | * @param activeEvent
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393 | */
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394 | public void setActive(boolean active) { |
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395 | this.active = active;
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396 | } |
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397 | |||
398 | /**
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399 | * Obtiene el color del cursor
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400 | * @return Color
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401 | */
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402 | public Color getColor() { |
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403 | return cursorColor;
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404 | } |
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405 | |||
406 | /**
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407 | * Asigna el color del cursor
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408 | * @param color
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409 | */
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410 | public void setColor(Color color) { |
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411 | this.cursorColor = color;
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412 | } |
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413 | } |