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42
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1 // this global variable has to be initialised before the frist use of the functions below
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2 // to fill in the attributes you can use the function init provided below
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3 // - array with all attributes
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4 var att = new Array();
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5
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6 // fill in the values of the "att"-array
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7 function init(fn, pn, ws, mo, mk, wx, wy, ww, wh) {
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8
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9 // debug window to check the parameters passed
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10 //alert ("DEBUG message (parameters in init):\n\npu = " + pu + "\npn = " + pn + "\nws = " + ws + "\nmo = " + mo + "\nmk = " + mk + "\nwx = " + wx + "\nwy = " + wy + "\nww = " + ww + "\nwh = " + wh);
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11
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12 // attaching the values to the att-array
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13 att[0] = fn;
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14 att[1] = parseInt(pn);
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15 att[2] = parseFloat(ws);
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16 att[3] = mo;
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17 att[4] = mk;
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18 att[5] = parseFloat(wx);
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19 att[6] = parseFloat(wy);
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20 att[7] = parseFloat(ww);
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21 att[8] = parseFloat(wh);
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22
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23 // compatablility issue
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24 if (att[3].indexOf("f") > -1) {
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25 att[3] = "fit";
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26 }
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27
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28 // converts the old mark format (0-1000) to new format(0.0 - 1.0)
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29 // could even be useless now
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30 if (att[4] != "0/0") {
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31 var tmp = att[4].split(";");
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32
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33 att[4] = "";
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34
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35 for (i = 0; i < tmp.length; i++) {
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36 tmp[i] = tmp[i].split("/");
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37
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38 if (tmp[i][0] > 1 && tmp[i][1] > 1) {
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39 tmp[i][0] /= 1000;
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40 tmp[i][1] /= 1000;
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41 }
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42
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43 att[4] += tmp[i][0] + "/" + tmp[i][1] + ";";
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44 }
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45 att[4] = att[4].slice(0, -1);
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46 }
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47
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48 // initialisation stuff
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49 // ====================
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50
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51 setMarks();
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52
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53 this.document.onkeypress = parseKeypress;
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54 focus();
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55
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56 // give a name to the window containing digilib - this way one can test if there is already a
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57 // digilib-window open and replace the contents of it (ex. digicat)
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58 top.window.name = "digilib";
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59 }
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60
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61
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62 // function that launches the ScaleServlet
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63 // the different detailGrades:
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64 // 0 -> back, next, page
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65 // 1 -> zoomout
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66 // 2 -> zoomarea, zoompoint, moveto, scaledef
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67
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68 function loadPicture(detailGrade, keepArea) {
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69
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70 var newQuery = "fn=" + att[0] + "&pn=" + att[1] + "&ws=" + att[2] + "&mo=" + att[3];
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71
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72 if (detailGrade == 0) {
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73 att[4] = "0/0";
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74 }
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75
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76 if ((detailGrade == 1) || (detailGrade == 0 && !keepArea)) {
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77 att[5] = 0;
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78 att[6] = 0;
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79 att[7] = 1;
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80 att[8] = 1;
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81 }
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82
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83 newQuery += "&mk=" + att[4] + "&wx=" + att[5] + "&wy=" + att[6] + "&ww=" + att[7] + "&wh=" + att[8];
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84 newQuery += "&dw=" + (innerWidth-30) + "&dh=" + (innerHeight-30);
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85
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86 // debug window - checking the parameters passed to the next image
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87 //alert ("DEBUG MESSAGE (query-string in loadPicture):\n\n" + newQuery);
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88
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89 location.href = location.pathname + "?" + newQuery;
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90 }
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91
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92
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93 // constructor holding different values of a point
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94 function Point(event) {
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95
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96 this.pageX = parseInt(event.clientX);
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97 this.pageY = parseInt(event.clientY);
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98
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99 this.x = this.pageX-parseInt(document.getElementById("lay1").style.left);
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100 this.y = this.pageY-parseInt(document.getElementById("lay1").style.top);
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101
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102 this.relX = cropFloat(att[5]+(att[7]*this.x/document.pic.offsetWidth));
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103 this.relY = cropFloat(att[6]+(att[8]*this.y/document.pic.offsetHeight));
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104
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105 // alert ("page:\t" + this.pageX + "\t" + this.pageY + "\npic:\t" + this.x + "\t" + this.y + "\nrel:\t" + this.relX + "\t" + this.relY);
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106
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107 return this;
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108 }
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109
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110
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111 function backPage(keepArea) {
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112
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113 att[1] = parseInt(att[1]) - 1;
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114
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115 if (att[1] > 0) {
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116 loadPicture(0, keepArea);
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117 } else {
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118 att[1] = parseInt(att[1]) + 1;
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119 alert("You are already on the first page!");
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120 }
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121 }
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122
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123
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124 function nextPage(keepArea) {
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125
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126 att[1] = parseInt(att[1]) + 1;
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127
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128 loadPicture(0, keepArea);
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129 }
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130
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131
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132 function page(keepArea) {
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133
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134 do {
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135 page = prompt("Goto Page:", 1);
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136 } while ((page != null) && (page < 1));
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137
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138 if (page != null && page != att[1]) {
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139 att[1] = page;
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140 loadPicture(0, keepArea);
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141 }
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142 }
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143
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144
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145 function digicat() {
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50
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146 var url = "digicat.html?" + att[0] + "+" + att[1];
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42
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147 win = window.open(url, "digicat");
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148 win.focus();
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149 }
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150
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151
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152 function ref(refselect) {
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153
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50
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154 var hyperlinkRef = baseUrl + "digilib.jsp?";
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42
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155 hyperlinkRef += att[0] + "+" + att[1] + "+" + att[2] + "+" + att[3] + "+" + att[4];
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156
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157 if ((att[5] != 0) || (att[6] != 0) || (att[7] != 1) || (att[8] != 1)) {
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158 hyperlinkRef += "+" + att[5] + "+" + att[6] + "+" + att[7] + "+" + att[8];
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159 }
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160
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161 if (refselect == 1) {
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162 prompt("Link for HTML--documents", hyperlinkRef);
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163 } else {
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164 prompt("Link for LaTeX--documents", "\\href{" + hyperlinkRef + "}{TEXT}");
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165 }
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166 }
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167
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168
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169 function mark() {
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170
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171 if (att[4].split(";").length > 7) {
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172 alert("Only 8 marks are possible at the moment!");
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173 return;
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174 }
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175
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176 function markEvent(event) {
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177 var point = new Point(event);
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178
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179 if ((att[4] != "") && (att[4] != "0/0")) {
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180 att[4] += ";";
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181 } else {
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182 att[4] = "";
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183 }
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184 att[4] += point.relX + "/" + point.relY;
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185
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186 document.getElementById("lay1").onmousedown = false;
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187 setMarks();
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188 }
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189
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190 document.getElementById("lay1").onmousedown = markEvent;
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191 }
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192
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193
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194 function zoomArea() {
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195 var state = 0;
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196 var pt1, pt2;
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197
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198 function click(event) {
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199
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200 if (state == 0) {
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201 state = 1;
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202
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203 pt1 = new Point(event);
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204 pt2 = pt1;
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205
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206 document.getElementById("eck1").style.left = pt1.pageX;
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207 document.getElementById("eck1").style.top = pt1.pageY;
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208 document.getElementById("eck2").style.left = pt2.pageX-12;
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209 document.getElementById("eck2").style.top = pt1.pageY;
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210 document.getElementById("eck3").style.left = pt1.pageX;
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211 document.getElementById("eck3").style.top = pt2.pageY-12;
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212 document.getElementById("eck4").style.left = pt2.pageX-12;
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213 document.getElementById("eck4").style.top = pt2.pageY-12;
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214
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215 document.getElementById("eck1").style.visibility="visible";
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216 document.getElementById("eck2").style.visibility="visible";
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217 document.getElementById("eck3").style.visibility="visible";
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218 document.getElementById("eck4").style.visibility="visible";
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219
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220 document.getElementById("lay1").onmousemove = move;
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221 document.getElementById("eck4").onmousemove = move;
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222
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223 } else {
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224
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225 pt2 = new Point(event);
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226
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227 document.getElementById("lay1").onmousedown = false;
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228 document.getElementById("eck4").onmousedown = false;
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229
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230 document.getElementById("eck1").style.visibility="hidden";
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231 document.getElementById("eck2").style.visibility="hidden";
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232 document.getElementById("eck3").style.visibility="hidden";
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233 document.getElementById("eck4").style.visibility="hidden";
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234
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235 att[5] = Math.min(pt1.relX, pt2.relX);
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236 att[6] = Math.min(pt1.relY, pt2.relY);
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237
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238 att[7] = Math.abs(pt1.relX-pt2.relX);
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239 att[8] = Math.abs(pt1.relY-pt2.relY);
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240
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241 if (att[7] != 0 && att[8] != 0) {
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242 loadPicture(2);
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243 }
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244 }
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245 }
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246
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247 function move(event) {
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248
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249 pt2 = new Point(event);
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250
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251 document.getElementById("eck1").style.left = ((pt1.pageX < pt2.pageX) ? pt1.pageX : pt2.pageX);
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252 document.getElementById("eck1").style.top = ((pt1.pageY < pt2.pageY) ? pt1.pageY : pt2.pageY);
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253 document.getElementById("eck2").style.left = ((pt1.pageX < pt2.pageX) ? pt2.pageX : pt1.pageX)-12;
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254 document.getElementById("eck2").style.top = ((pt1.pageY < pt2.pageY) ? pt1.pageY : pt2.pageY);
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255 document.getElementById("eck3").style.left = ((pt1.pageX < pt2.pageX) ? pt1.pageX : pt2.pageX);
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256 document.getElementById("eck3").style.top = ((pt1.pageY < pt2.pageY) ? pt2.pageY : pt1.pageY)-12;
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257 document.getElementById("eck4").style.left = ((pt1.pageX < pt2.pageX) ? pt2.pageX : pt1.pageX)-12;
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258 document.getElementById("eck4").style.top = ((pt1.pageY < pt2.pageY) ? pt2.pageY : pt1.pageY)-12;
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259 }
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260
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261 document.getElementById("lay1").onmousedown = click;
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262 document.getElementById("eck4").onmousedown = click;
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263 }
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264
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265
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266 function zoomPoint() {
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267
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268 function zoomPointEvent(event) {
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269 var point = new Point(event);
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270
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271 att[5] = cropFloat(point.relX-0.5*att[7]*0.7);
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272 att[6] = cropFloat(point.relY-0.5*att[8]*0.7);
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273
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274 att[7] = cropFloat(att[7]*0.7);
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275 att[8] = cropFloat(att[8]*0.7);
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276
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277 if (att[5] < 0) {
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278 att[5] = 0;
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279 }
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280 if (att[6] < 0) {
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281 att[6] = 0;
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282 }
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283 if (att[5]+att[7] > 1) {
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284 att[5] = 1-att[7];
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285 }
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286 if (att[6]+att[8] > 1) {
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287 att[6] = 1-att[8];
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288 }
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289
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290 document.getElementById("lay1").onmousedown = false;
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291
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292 loadPicture(2);
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293 }
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294
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295 document.getElementById("lay1").onmousedown = zoomPointEvent;
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296 }
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297
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298
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299 function zoomOut() {
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300
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301 loadPicture(1);
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302 }
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303
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304
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305 function moveTo() {
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306
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307 function moveToEvent(event) {
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308
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309 var point = new Point(event);
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310
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311 att[5] = cropFloat(point.relX-0.5*att[7]);
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312 att[6] = cropFloat(point.relY-0.5*att[8]);
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313
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314 if (att[5] < 0) {
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315 att[5] = 0;
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316 }
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317 if (att[6] < 0) {
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318 att[6] = 0;
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319 }
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320 if (att[5]+att[7] > 1) {
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321 att[5] = 1-att[7];
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322 }
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323 if (att[6]+att[8] > 1) {
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324 att[6] = 1-att[8];
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325 }
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326
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327 document.getElementById("lay1").onmousedown = false;
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328
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329 loadPicture(2);
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330 }
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331
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332 document.getElementById("lay1").onmousedown = moveToEvent;
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333 }
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334
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335
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336 function scale(scaledef) {
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337
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338 att[2] = scaledef;
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339 loadPicture(2);
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340 }
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341
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342
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343 function setMarks() {
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344
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345 if (att[4] != "" && att[4] != "0/0") {
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346 var mark = att[4].split(";");
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347
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348 var countMarks = mark.length;
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349
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350 // maximum of marks is 8
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351 // we do not report this error because this is already done in func. "Mark"
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352 if (countMarks > 8) countMarks = 8;
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353
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354 var picWidth = document.pic.offsetWidth;
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355 var picHeight = document.pic.offsetHeight;
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356
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357 // catch the cases where the picture had not been loaded already and
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358 // make a timeout so that the coordinates are calculated with the real dimensions
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359 if (document.pic.complete) {
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360 var xoffset = parseInt(document.getElementById("lay1").style.left);
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361 var yoffset = parseInt(document.getElementById("lay1").style.top);
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362
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363 for (var i = 0; i < countMarks; i++) {
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364 mark[i] = mark[i].split("/");
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365
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366 if ((mark[i][0] > att[5]) && (mark[i][1] > att[6]) && (mark[i][0] < (att[5]+att[7])) && (mark[i][1] < (att[6]+att[8]))) {
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367
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368 mark[i][0] = parseInt(xoffset+picWidth*(mark[i][0]-att[5])/att[7]);
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369 mark[i][1] = parseInt(yoffset+picHeight*(mark[i][1]-att[6])/att[8]);
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370
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371
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372 document.getElementById("dot" + i).style.left = mark[i][0]-5;
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373 document.getElementById("dot" + i).style.top = mark[i][1]-5;
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374 document.getElementById("dot" + i).style.visibility = "visible";
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375 }
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376 }
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377 } else {
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378 setTimeout("setMarks()", 100);
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379 }
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380 }
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381 }
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382
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383 // capturing keypresses for next and previous page
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384 // ascii-values of n = 110, b = 98
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385 function parseKeypress (event) {
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386
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387 if (String.fromCharCode(event.which) == "n") {
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388 nextPage();
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389 }
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390
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391 // does not work currently, because Opera catches this key on it's own
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|
|
392 // have to change the key or find another way - luginbuehl
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393 if (String.fromCharCode(event.which) == "b") {
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394 backPage();
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395 }
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396 }
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397
|
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398
|
|
|
399 // auxiliary function to crop senseless precicsion
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400 function cropFloat(tmp) {
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401 return parseInt(10000*tmp)/10000;
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402 }
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