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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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20
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9
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10 /** Contains methods to manipulate an digilib image @see {#link de.mpiwg.itgroup.digilib.digiImage.Digimage}.
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11 * 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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12 *
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13 */
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14
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20
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15 public class DigiImageController{
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16
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17 public static String VMIR="vmir"; // vertical mirroring
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18 public static String HMIR="hmir"; // horizontal mirroring
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19
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20 public IDigiImage digiImage; // the image to be controlled.
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21 //private DigiImageParameter parameter;
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22
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23
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24 protected DigiImageController(){}
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25
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26 /** Create a new controller on the image object.
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27 *
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28 * @param di
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29 */
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27
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30 public DigiImageController(IDigiImage di){
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31 this.digiImage=di;
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32 }
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33
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34
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35
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36 /** Mirrors the image
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37 * @param modes can be @see {@value #VMIR} or {@link #HMIR}.
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38 */
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39 public void mir(String mode) {
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40
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41 DigiImageParameter dp = digiImage.getParameter();
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42
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43 String parameter = dp.getMo();
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44
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45
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46 // mo kann mehrere durch komma getrennte parameter haben
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47 String[] splittmo= parameter.split(",");
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48 Boolean hasMir = false;
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49 List<String> newmo = new ArrayList<String>();
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50 for(String m: splittmo){
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51 if (m.equals(mode)){
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52 hasMir=true;
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53 } else {
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54 newmo.add(m);
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55 }
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56 }
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57 if(!hasMir){ // kein hmir dann dazufuegen
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58 newmo.add(mode);
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59 }
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60 String newmoString = StringUtils.join(newmo,",");
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61
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62 dp.setMo(newmoString);
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63
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64
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65 digiImage.setParameter(dp);
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66 digiImage.redraw();
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67 }
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68
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69
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70 public void vmir() {
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71 mir(VMIR);
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72
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73 }
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74
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75 public void hmir() {
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76 mir(HMIR);
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77
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78 }
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79
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80 public void rotate(float rotateValue) {
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81 digiImage.getParameter().setRot(rotateValue);
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82 digiImage.redraw();
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83 }
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84
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85
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86
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87
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88 /** Zoom the area given by the rectangle (x,y), (x2,y2). Alle point are given in absolute coordinates.
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89 * @param x
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90 * @param y
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91 * @param x2
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92 * @param y2
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93 */
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94 public void zoomArea(int x, int y, int x2, int y2) {
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95
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96 Point size = digiImage.getLabel().getSize();
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97
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98 float relx = new Float(x)/new Float(size.x);
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99 float rely = new Float(y)/new Float(size.y);
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100
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101 float relx2 = new Float(x2)/new Float(size.x);
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102 float rely2 = new Float(y2)/new Float(size.y);
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103
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104 DigiImageParameter dp = digiImage.getParameter();
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105
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106 float Ww = dp.getWw();
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107 float Wh = dp.getWh();
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108
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109 float Wx = dp.getWx();
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110 float Wy = dp.getWy();
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111
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112
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113 float nWx = relx*Ww+Wx;
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114 float nWy = rely*Wh+Wy;
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115
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116 float nWw = (relx2-relx)*Ww;
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117 float nWh = (rely2-rely)*Wh;
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118
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119
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120
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121 dp.setWx(nWx);
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122 dp.setWy(nWy);
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123 dp.setWw(nWw);
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124 dp.setWh(nWh);
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125 digiImage.setParameter(dp);
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126 digiImage.redraw();
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127
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128
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129 // setRot(rotateValue);
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130 }
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131
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132 /**
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133 * Show the whole image.
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134 *
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135 */
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136 public void zoomFull(){
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137 DigiImageParameter dp = digiImage.getParameter();
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138 dp.setWw(1);
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139 dp.setWh(1);
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140
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141 dp.setWx(0);
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142 dp.setWy(0);
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143
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144 digiImage.setParameter(dp);
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145 digiImage.redraw();
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146 }
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147
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148 /**
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149 * scales the image down (ws --> ws-1)
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150 *
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151 */
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152 public void scaleDown() {
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153 DigiImageParameter dp = digiImage.getParameter();
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154 float ws = dp.getWs();
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155 if (ws>1){
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156 dp.setWs(ws-1);
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157 digiImage.setParameter(dp);
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158 digiImage.redraw();
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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
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164 /**
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165 * scales the image up (ws --> ws+1)
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166 *
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167 */
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168 public void scaleUp() {
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169 DigiImageParameter dp = digiImage.getParameter();
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170 float ws = dp.getWs();
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171
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172 dp.setWs(ws+1);
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173 digiImage.setParameter(dp);
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174 digiImage.redraw();
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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
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181 /**
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182 * If the image object points to a folder the previous image in the folder is displayed.
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183 *
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184 */
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185 public void prevPage() {
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186 DigiImageParameter dp = digiImage.getParameter();
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187 int pn = dp.getPn();
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188 if (pn>1)
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189 pn=pn-1;
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190 dp.setPn(pn);
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191 digiImage.setParameter(dp);
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192 digiImage.redraw();
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193
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194 }
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195
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196 /**
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197 * If the image object points to a folder the next image in the folder is displayed.
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198 * TODO currently no check is made if we are already on the last image in the folder.
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199 */
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200 public void nextPage() {
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201 DigiImageParameter dp = digiImage.getParameter();
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202 int pn = dp.getPn();
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203
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204 pn=pn+1;
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205 dp.setPn(pn);
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206 digiImage.setParameter(dp);
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207 digiImage.redraw();
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208
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209
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210 }
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211
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212
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214
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215 }
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