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107
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1 /*
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2 Copyright (C) 2003 WTWG, Uni Bern
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3
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4 This program is free software; you can redistribute it and/or
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5 modify it under the terms of the GNU General Public License
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6 as published by the Free Software Foundation; either version 2
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7 of the License, or (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, write to the Free Software
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16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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17
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18 Author: Christian Luginbuehl, 01.05.2003 , Version Alcatraz 0.3
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19 */
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20 // this global variable has to be initialised before the frist use of the functions below
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21 // to fill in the attributes you can use the function init provided below
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22 // - array with all attributes
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23 var att = new Object();
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6
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24
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107
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25 // fill in the values of the "att"-array
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26 function init(fn, pn, ws, mo, mk, wx, wy, ww, wh) {
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27
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28 // debug window to check the parameters passed
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29 //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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6
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30
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107
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31 // attaching the values to the att-array
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32 att.fn = fn;
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33 att.pn = parseInt(pn);
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34 att.ws = parseFloat(ws);
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35 att.mo = mo;
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36 att.mk = mk;
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37 att.wx = parseFloat(wx);
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38 att.wy = parseFloat(wy);
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39 att.ww = parseFloat(ww);
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40 att.wh = parseFloat(wh);
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41
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42 // compatablility issue
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43 // dangerous at the time - lugi
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44 // if (att.mo.indexOf("f") > -1) {
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45 // att.mo = "fit";
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46 // }
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6
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47
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107
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48 // converts the old mark format (0-1000) to new format(0.0 - 1.0)
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49 // could even be useless now
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50 if (att.mk != "0/0" && att.mk != "") {
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51 var tmp = att.mk.split(";");
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52
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53 att.mk = "";
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54
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55 for (i = 0; i < tmp.length; i++) {
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56 tmp[i] = tmp[i].split("/");
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6
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57
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107
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58 if (tmp[i][0] > 1 && tmp[i][1] > 1) {
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59 tmp[i][0] /= 1000;
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60 tmp[i][1] /= 1000;
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61 }
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62
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63 att.mk += tmp[i][0] + "/" + tmp[i][1] + ";";
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64 }
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65 att.mk = att.mk.slice(0, -1);
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66 }
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6
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67
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107
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68 // initialisation stuff
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69 // ====================
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70
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71 setMarks();
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72
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73 this.document.addEventListener('keypress', parseKeypress, true);
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74 focus();
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75
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76 // give a name to the window containing digilib - this way one can test if there is already a
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77 // digilib-window open and replace the contents of it (ex. digicat)
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78 top.window.name = "digilib";
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79 }
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80
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81
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82 // function that launches the ScaleServlet
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83 // the different detailGrades:
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84 // 0 -> back, next, page
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85 // 1 -> zoomout
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86 // 2 -> zoomarea, zoompoint, moveto, scaledef
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87
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88 function loadPicture(detailGrade, keepArea) {
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89
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90 var newQuery = "fn=" + att.fn + "&pn=" + att.pn + "&ws=" + att.ws + "&mo=" + att.mo;
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6
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91
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92 if (detailGrade == 0) {
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93 att.mk = "0/0";
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6
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94 }
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95
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96 if ((detailGrade == 1) || (detailGrade == 0 && !keepArea)) {
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107
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97 att.wx = 0;
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98 att.wy = 0;
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99 att.ww = 1;
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100 att.wh = 1;
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101 }
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107
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102
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103 newQuery += "&mk=" + att.mk + "&wx=" + att.wx + "&wy=" + att.wy + "&ww=" + att.ww + "&wh=" + att.wh;
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104 newQuery += "&dw=" + (innerWidth-30) + "&dh=" + (innerHeight-30);
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105 newQuery += "&lv=1"
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106
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107
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107 // debug window - checking the parameters passed to the next image
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108 alert ("DEBUG MESSAGE (query-string in loadPicture):\n\n" + newQuery);
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109
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107
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110 location.href = location.protocol + "//" + location.host + location.pathname + "?" + newQuery;
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111 }
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112
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113
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107
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114 // constructor holding different values of a point
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115 function Point(event) {
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116
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107
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117 this.pageX = parseInt(event.pageX);
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118 this.pageY = parseInt(event.pageY);
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119
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120 this.x = this.pageX-parseInt(document.getElementById("lay1").style.left);
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121 this.y = this.pageY-parseInt(document.getElementById("lay1").style.top);
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122
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123 this.relX = cropFloat(att.wx+(att.ww*this.x/document.pic.offsetWidth));
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124 this.relY = cropFloat(att.wy+(att.wh*this.y/document.pic.offsetHeight));
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125
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107
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126 return this;
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127 }
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128
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129
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130 function backPage(keepArea) {
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131
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132 att.pn = parseInt(att.pn) - 1;
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133
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134 if (att.pn > 0) {
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135 loadPicture(0, keepArea);
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136 } else {
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107
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137 att.pn = parseInt(att.pn) + 1;
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6
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138 alert("You are already on the first page!");
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139 }
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140 }
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141
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142
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107
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143 function nextPage(keepArea) {
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144
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107
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145 att.pn = parseInt(att.pn) + 1;
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146
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147 loadPicture(0, keepArea);
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148 }
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149
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150
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107
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151 function page(keepArea) {
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152
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153 do {
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107
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154 page = prompt("Goto Page:", 1);
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155 } while ((page != null) && (page < 1));
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156
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107
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157 if (page != null && page != att.pn) {
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158 att.pn = page;
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159 loadPicture(0, keepArea);
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160 }
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161 }
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162
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163
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107
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164 function digicat() {
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165 var url = baseUrl + "/digicat.jsp?" + att.fn + "+" + att.pn;
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166 win = window.open(url, "digicat");
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167 win.focus();
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168 }
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169
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170
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107
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171 function ref(refselect) {
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6
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172
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107
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173 var hyperlinkRef = baseUrl + "/digilib.jsp?";
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174 hyperlinkRef += att.fn + "+" + att.pn + "+" + att.ws + "+" + att.mo + "+" + att.mk;
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6
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175
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107
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176 if ((att.wx != 0) || (att.wy != 0) || (att.ww != 1) || (att.wh != 1)) {
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177 hyperlinkRef += "+" + att.wx + "+" + att.wy + "+" + att.ww + "+" + att.wh;
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178 }
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179
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180 if (refselect == 1) {
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181 prompt("Link for HTML--documents", hyperlinkRef);
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182 } else {
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183 prompt("Link for LaTeX--documents", "\\href{" + hyperlinkRef + "}{TEXT}");
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184 }
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185 }
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186
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187
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107
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188 function mark() {
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189
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107
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190 if (att.mk.split(";").length > 7) {
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191 alert("Only 8 marks are possible at the moment!");
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192 return;
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193 }
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194
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107
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195 function markEvent(event) {
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196 var point = new Point(event);
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197
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198 if ((att.mk != "") && (att.mk != "0/0")) {
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199 att.mk += ";";
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200 } else {
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107
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201 att.mk = "";
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202 }
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107
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203 att.mk += point.relX + "/" + point.relY;
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204
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107
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205 document.getElementById("lay1").removeEventListener("mousedown", markEvent, true);
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206 setMarks();
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207 }
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208
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107
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209 document.getElementById("lay1").addEventListener("mousedown", markEvent, true);
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210 }
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211
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212
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107
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213 function zoomArea() {
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214 var state = 0;
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107
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215 var pt1, pt2;
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216
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107
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217 function click(event) {
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218
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219 if (state == 0) {
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220 state = 1;
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221
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107
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222 pt1 = new Point(event);
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223 pt2 = pt1;
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224
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107
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225 document.getElementById("eck1").style.left = pt1.pageX;
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226 document.getElementById("eck1").style.top = pt1.pageY;
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227 document.getElementById("eck2").style.left = pt2.pageX-12;
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228 document.getElementById("eck2").style.top = pt1.pageY;
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229 document.getElementById("eck3").style.left = pt1.pageX;
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230 document.getElementById("eck3").style.top = pt2.pageY-12;
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231 document.getElementById("eck4").style.left = pt2.pageX-12;
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232 document.getElementById("eck4").style.top = pt2.pageY-12;
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233
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107
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234 document.getElementById("eck1").style.visibility="visible";
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235 document.getElementById("eck2").style.visibility="visible";
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236 document.getElementById("eck3").style.visibility="visible";
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237 document.getElementById("eck4").style.visibility="visible";
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238
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107
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239 document.getElementById("lay1").addEventListener("mousemove", move, true);
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240 document.getElementById("eck4").addEventListener("mousemove", move, true);
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6
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241
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242 } else {
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243
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107
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244 pt2 = new Point(event);
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245
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107
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246 document.getElementById("lay1").removeEventListener("mousedown", click, true);
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247 document.getElementById("eck4").removeEventListener("mousedown", click, true);
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248
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249 document.getElementById("lay1").removeEventListener("mousemove", move, true);
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250 document.getElementById("eck4").removeEventListener("mousemove", move, true);
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251
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107
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252 document.getElementById("eck1").style.visibility="hidden";
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253 document.getElementById("eck2").style.visibility="hidden";
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254 document.getElementById("eck3").style.visibility="hidden";
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255 document.getElementById("eck4").style.visibility="hidden";
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256
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107
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257 att.wx = parseFloat(Math.min(pt1.relX, pt2.relX));
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258 att.wy = parseFloat(Math.min(pt1.relY, pt2.relY));
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259
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107
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260 att.ww = parseFloat(Math.abs(pt1.relX-pt2.relX));
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261 att.wh = parseFloat(Math.abs(pt1.relY-pt2.relY));
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262
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107
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263 if (att.ww != 0 && att.wh != 0) {
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264 loadPicture(2);
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265 }
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266 }
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267 }
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268
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107
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269 function move(event) {
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270
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107
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271 pt2 = new Point(event);
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272
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107
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273 document.getElementById("eck1").style.left = ((pt1.pageX < pt2.pageX) ? pt1.pageX : pt2.pageX);
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274 document.getElementById("eck1").style.top = ((pt1.pageY < pt2.pageY) ? pt1.pageY : pt2.pageY);
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275 document.getElementById("eck2").style.left = ((pt1.pageX < pt2.pageX) ? pt2.pageX : pt1.pageX)-12;
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276 document.getElementById("eck2").style.top = ((pt1.pageY < pt2.pageY) ? pt1.pageY : pt2.pageY);
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277 document.getElementById("eck3").style.left = ((pt1.pageX < pt2.pageX) ? pt1.pageX : pt2.pageX);
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278 document.getElementById("eck3").style.top = ((pt1.pageY < pt2.pageY) ? pt2.pageY : pt1.pageY)-12;
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279 document.getElementById("eck4").style.left = ((pt1.pageX < pt2.pageX) ? pt2.pageX : pt1.pageX)-12;
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280 document.getElementById("eck4").style.top = ((pt1.pageY < pt2.pageY) ? pt2.pageY : pt1.pageY)-12;
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281 }
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282
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107
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283 document.getElementById("lay1").addEventListener("mousedown", click, true);
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284 document.getElementById("eck4").addEventListener("mousedown", click, true);
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285 }
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286
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287
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107
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288 function zoomPoint() {
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289
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107
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290 function zoomPointEvent(event) {
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291 var point = new Point(event);
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292
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107
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293 att.wx = cropFloat(point.relX-0.5*att.ww*0.7);
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294 att.wy = cropFloat(point.relY-0.5*att.wh*0.7);
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295
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107
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296 att.ww = cropFloat(att.ww*0.7);
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297 att.wh = cropFloat(att.wh*0.7);
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298
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107
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299 if (att.wx < 0) {
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300 att.wx = 0;
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301 }
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107
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302 if (att.wy < 0) {
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303 att.wy = 0;
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304 }
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107
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305 if (att.wx+att.ww > 1) {
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306 att.wx = 1-att.ww;
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307 }
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107
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308 if (att.wy+att.wh > 1) {
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309 att.wy = 1-att.wh;
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310 }
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311
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107
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312 document.getElementById("lay1").removeEventListener("mousedown", zoomPointEvent, true);
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313
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314 loadPicture(2);
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315 }
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316
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107
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317 document.getElementById("lay1").addEventListener("mousedown", zoomPointEvent, true);
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318 }
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319
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320
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107
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321 function zoomOut() {
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322
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323 loadPicture(1);
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324 }
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325
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326
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107
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327 function moveTo() {
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328
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329 function moveToEvent(event) {
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330
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107
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331 var point = new Point(event);
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332
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107
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333 att.wx = cropFloat(point.relX-0.5*att.ww);
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334 att.wy = cropFloat(point.relY-0.5*att.wh);
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335
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107
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336 if (att.wx < 0) {
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337 att.wx = 0;
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6
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338 }
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107
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339 if (att.wy < 0) {
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340 att.wy = 0;
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6
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341 }
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107
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342 if (att.wx+att.ww > 1) {
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343 att.wx = 1-att.ww;
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6
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344 }
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107
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345 if (att.wy+att.wh > 1) {
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346 att.wy = 1-att.wh;
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6
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347 }
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348
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107
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349 document.getElementById("lay1").removeEventListener("mousedown", moveToEvent, true);
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350
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351 loadPicture(2);
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352 }
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353
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107
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354 document.getElementById("lay1").addEventListener("mousedown", moveToEvent, true);
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6
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355 }
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356
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357
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107
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358 function scale(scaledef) {
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6
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359
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107
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360 att.ws = scaledef;
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6
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361 loadPicture(2);
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362 }
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363
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364
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107
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365 function setMarks() {
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6
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366
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107
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367 if (att.mk != "" && att.mk != "0/0") {
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368 var mark = att.mk.split(";");
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6
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369
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370 var countMarks = mark.length;
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371
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372 // maximum of marks is 8
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373 // we do not report this error because this is already done in func. "Mark"
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374 if (countMarks > 8) countMarks = 8;
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375
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107
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376 var picWidth = document.pic.offsetWidth;
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377 var picHeight = document.pic.offsetHeight;
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6
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378
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379 // catch the cases where the picture had not been loaded already and
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380 // make a timeout so that the coordinates are calculated with the real dimensions
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107
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381 if (document.pic.complete) {
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|
|
382 var xoffset = parseInt(document.getElementById("lay1").style.left);
|
|
|
383 var yoffset = parseInt(document.getElementById("lay1").style.top);
|
|
6
|
384
|
|
|
385 for (var i = 0; i < countMarks; i++) {
|
|
|
386 mark[i] = mark[i].split("/");
|
|
|
387
|
|
107
|
388 if ((mark[i][0] >= att.wx) && (mark[i][1] >= att.wy) && (mark[i][0] <= (att.wx+att.ww)) && (mark[i][1] <= (att.wy+att.wh))) {
|
|
6
|
389
|
|
107
|
390 mark[i][0] = parseInt(xoffset+picWidth*(mark[i][0]-att.wx)/att.ww);
|
|
|
391 mark[i][1] = parseInt(yoffset+picHeight*(mark[i][1]-att.wy)/att.wh);
|
|
6
|
392
|
|
|
393
|
|
107
|
394 document.getElementById("dot" + i).style.left = mark[i][0]-5;
|
|
|
395 document.getElementById("dot" + i).style.top = mark[i][1]-5;
|
|
|
396 document.getElementById("dot" + i).style.visibility = "visible";
|
|
6
|
397 }
|
|
|
398 }
|
|
|
399 } else {
|
|
107
|
400 setTimeout("setMarks()", 100);
|
|
6
|
401 }
|
|
|
402 }
|
|
|
403 }
|
|
|
404
|
|
|
405 // capturing keypresses for next and previous page
|
|
|
406 // ascii-values of n = 110, b = 98
|
|
|
407 function parseKeypress (event) {
|
|
|
408 if (event.charCode == 110) {
|
|
107
|
409 nextPage();
|
|
6
|
410 }
|
|
|
411 if (event.charCode == 98) {
|
|
107
|
412 backPage();
|
|
6
|
413 }
|
|
|
414 }
|
|
|
415
|
|
|
416
|
|
|
417 // auxiliary function to crop senseless precicsion
|
|
|
418 function cropFloat(tmp) {
|
|
|
419 return parseInt(10000*tmp)/10000;
|
|
|
420 }
|
