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1 package de.mpg.mpiwg.itgroup.digilib.digiImage;
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2
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3 import java.util.ArrayList;
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4 import java.util.List;
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5
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6 import org.apache.commons.lang.StringUtils;
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7 import org.eclipse.swt.graphics.Point;
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8
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9
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9 /** Contains methods to manipulate an digilib image @see {#link de.mpiwg.itgroup.digilib.digiImage.Digimage}.
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10 * The parameters are documented at the digilib pages @see {@link http://developer.berlios.de/docman/display_doc.php?docid=106&group_id=251}.
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11 *
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12 */
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13
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14 public class DigiImageController {
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15
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16 public static String VMIR="vmir"; // vertical mirroring
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17 public static String HMIR="hmir"; // horizontal mirroring
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18
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19 public DigiImage digiImage; // the image to be controlled.
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20 //private DigiImageParameter parameter;
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21
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22 protected DigiImageController(){}
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23
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24 /** Create a new controller on the image object.
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25 *
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26 * @param di
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27 */
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28 public DigiImageController(DigiImage di){
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29 this.digiImage=di;
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30 }
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31
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32
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33
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34 /** Mirrors the image
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35 * @param modes can be @see {@value #VMIR} or {@link #HMIR}.
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36 */
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37 public void mir(String mode) {
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38
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39 DigiImageParameter dp = digiImage.getParameter();
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40
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41 String parameter = dp.getMo();
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42
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43
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44 // mo kann mehrere durch komma getrennte parameter haben
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45 String[] splittmo= parameter.split(",");
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46 Boolean hasMir = false;
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47 List<String> newmo = new ArrayList<String>();
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48 for(String m: splittmo){
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49 if (m.equals(mode)){
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50 hasMir=true;
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51 } else {
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52 newmo.add(m);
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53 }
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54 }
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55 if(!hasMir){ // kein hmir dann dazufuegen
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56 newmo.add(mode);
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57 }
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58 String newmoString = StringUtils.join(newmo,",");
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59
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60 dp.setMo(newmoString);
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61
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62
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63 digiImage.setParameter(dp);
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64 digiImage.redraw();
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65 }
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66
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67
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68 public void vmir() {
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69 mir(VMIR);
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70
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71 }
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72
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73 public void hmir() {
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74 mir(HMIR);
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75
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76 }
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77
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78 public void rotate(float rotateValue) {
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79 digiImage.getParameter().setRot(rotateValue);
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80 digiImage.redraw();
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81 }
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82
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83
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84
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85
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86 /** Zoom the area given by the rectangle (x,y), (x2,y2). Alle point are given in absolute coordinates.
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87 * @param x
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88 * @param y
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89 * @param x2
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90 * @param y2
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91 */
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92 public void zoomArea(int x, int y, int x2, int y2) {
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93
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94 Point size = digiImage.getLabel().getSize();
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95
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96 float relx = new Float(x)/new Float(size.x);
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97 float rely = new Float(y)/new Float(size.y);
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98
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99 float relx2 = new Float(x2)/new Float(size.x);
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100 float rely2 = new Float(y2)/new Float(size.y);
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101
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102 DigiImageParameter dp = digiImage.getParameter();
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103
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104 float Ww = dp.getWw();
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105 float Wh = dp.getWh();
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106
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107 float Wx = dp.getWx();
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108 float Wy = dp.getWy();
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109
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110
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111 float nWx = relx*Ww+Wx;
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112 float nWy = rely*Wh+Wy;
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113
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114 float nWw = (relx2-relx)*Ww;
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115 float nWh = (rely2-rely)*Wh;
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116
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117
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118
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119 dp.setWx(nWx);
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120 dp.setWy(nWy);
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121 dp.setWw(nWw);
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122 dp.setWh(nWh);
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123 digiImage.setParameter(dp);
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124 digiImage.redraw();
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125
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126
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127 // setRot(rotateValue);
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128 }
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129
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130 /**
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131 * Show the whole image.
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132 *
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133 */
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134 public void zoomFull(){
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135 DigiImageParameter dp = digiImage.getParameter();
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136 dp.setWw(1);
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137 dp.setWh(1);
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138
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139 dp.setWx(0);
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140 dp.setWy(0);
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141
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142 digiImage.setParameter(dp);
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143 digiImage.redraw();
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144 }
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145
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146 /**
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147 * scales the image down (ws --> ws-1)
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148 *
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149 */
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150 public void scaleDown() {
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151 DigiImageParameter dp = digiImage.getParameter();
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152 float ws = dp.getWs();
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153 if (ws>1){
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154 dp.setWs(ws-1);
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155 digiImage.setParameter(dp);
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156 digiImage.redraw();
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157
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158 }
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159
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160 }
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161
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162 /**
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163 * scales the image up (ws --> ws+1)
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164 *
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165 */
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166 public void scaleUp() {
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167 DigiImageParameter dp = digiImage.getParameter();
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168 float ws = dp.getWs();
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169
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170 dp.setWs(ws+1);
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171 digiImage.setParameter(dp);
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172 digiImage.redraw();
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173
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174
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175
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176
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177 }
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178
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179 /**
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180 * If the image object points to a folder the previous image in the folder is displayed.
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181 *
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182 */
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183 public void prevPage() {
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184 DigiImageParameter dp = digiImage.getParameter();
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185 int pn = dp.getPn();
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186 if (pn>1)
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187 pn=pn-1;
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188 dp.setPn(pn);
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189 digiImage.setParameter(dp);
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190 digiImage.redraw();
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191
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192 }
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193
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194 /**
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195 * If the image object points to a folder the next image in the folder is displayed.
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196 * TODO currently no check is made if we are already on the last image in the folder.
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197 */
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198 public void nextPage() {
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199 DigiImageParameter dp = digiImage.getParameter();
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200 int pn = dp.getPn();
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201
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202 pn=pn+1;
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203 dp.setPn(pn);
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204 digiImage.setParameter(dp);
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205 digiImage.redraw();
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206
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207
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208 }
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209
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210
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211 }
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